mirror of https://github.com/go-gitea/gitea.git
Rewrite markdown rendering to blackfriday v2 and rewrite orgmode rendering to go-org (#8560)
* Rewrite markdown rendering to blackfriday v2.0 * Fix style * Fix go mod with golang 1.13 * Fix blackfriday v2 import * Inital orgmode renderer migration to go-org * Vendor go-org dependency * Ignore errors :/ * Update go-org to latest version * Update test * Fix go-org test * Remove unneeded code * Fix comments * Fix markdown test * Fix blackfriday regression rendering HTML blockpull/8751/head
Lauris BH
5 years ago
committed by
zeripath
parent
690a8ec502
commit
086a46994a
@ -1 +0,0 @@
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.DS_Store
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@ -1,12 +0,0 @@
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language: go
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go:
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- 1.7
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before_install:
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- go get golang.org/x/tools/cmd/cover
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- go get github.com/mattn/goveralls
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script:
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- go test -v -covermode=count -coverprofile=coverage.out
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- $HOME/gopath/bin/goveralls -coverprofile=coverage.out -service=travis-ci
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@ -1,66 +0,0 @@
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#+TITLE: chaseadamsio/goorgeous
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[[https://travis-ci.org/chaseadamsio/goorgeous.svg?branch=master]]
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[[https://coveralls.io/repos/github/chaseadamsio/goorgeous/badge.svg?branch=master]]
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/goorgeous is a Go Org to HTML Parser./
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[[file:gopher_small.gif]]
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*Pronounced: Go? Org? Yes!*
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#+BEGIN_QUOTE
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"Org mode is for keeping notes, maintaining TODO lists, planning projects, and authoring documents with a fast and effective plain-text system."
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- [[orgmode.org]]
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#+END_QUOTE
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The purpose of this package is to come as close as possible as parsing an =*.org= document into HTML, the same way one might publish [[http://orgmode.org/worg/org-tutorials/org-publish-html-tutorial.html][with org-publish-html from Emacs]].
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* Installation
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#+BEGIN_SRC sh
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go get -u github.com/chaseadamsio/goorgeous
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#+END_SRC
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* Usage
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** Org Headers
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To retrieve the headers from a =[]byte=, call =OrgHeaders= and it will return a =map[string]interface{}=:
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#+BEGIN_SRC go
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input := "#+title: goorgeous\n* Some Headline\n"
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out := goorgeous.OrgHeaders(input)
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#+END_SRC
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#+BEGIN_SRC go
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map[string]interface{}{
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"title": "goorgeous"
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}
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#+END_SRC
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** Org Content
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After importing =github.com/chaseadamsio/goorgeous=, you can call =Org= with a =[]byte= and it will return an =html= version of the content as a =[]byte=
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#+BEGIN_SRC go
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input := "#+TITLE: goorgeous\n* Some Headline\n"
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out := goorgeous.Org(input)
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#+END_SRC
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=out= will be:
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#+BEGIN_SRC html
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<h1>Some Headline</h1>/n
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#+END_SRC
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* Why?
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First off, I've become an unapologetic user of Emacs & ever since finding =org-mode= I use it for anything having to do with writing content, organizing my life and keeping documentation of my days/weeks/months.
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Although I like Emacs & =emacs-lisp=, I publish all of my html sites with [[https://gohugo.io][Hugo Static Site Generator]] and wanted to be able to write my content in =org-mode= in Emacs rather than markdown.
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Hugo's implementation of templating and speed are unmatched, so the only way I knew for sure I could continue to use Hugo and write in =org-mode= seamlessly was to write a golang parser for org content and submit a PR for Hugo to use it.
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* Acknowledgements
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I leaned heavily on russross' [[https://github.com/russross/blackfriday][blackfriday markdown renderer]] as both an example of how to write a parser (with some updates to leverage the go we know today) and reusing the blackfriday HTML Renderer so I didn't have to write my own!
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@ -1,803 +0,0 @@
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package goorgeous
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import (
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"bufio"
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"bytes"
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"regexp"
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"github.com/russross/blackfriday"
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"github.com/shurcooL/sanitized_anchor_name"
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)
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type inlineParser func(p *parser, out *bytes.Buffer, data []byte, offset int) int
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type footnotes struct {
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id string
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def string
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}
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type parser struct {
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r blackfriday.Renderer
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inlineCallback [256]inlineParser
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notes []footnotes
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}
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// NewParser returns a new parser with the inlineCallbacks required for org content
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func NewParser(renderer blackfriday.Renderer) *parser {
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p := new(parser)
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p.r = renderer
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p.inlineCallback['='] = generateVerbatim
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p.inlineCallback['~'] = generateCode
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p.inlineCallback['/'] = generateEmphasis
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p.inlineCallback['_'] = generateUnderline
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p.inlineCallback['*'] = generateBold
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p.inlineCallback['+'] = generateStrikethrough
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p.inlineCallback['['] = generateLinkOrImg
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return p
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}
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// OrgCommon is the easiest way to parse a byte slice of org content and makes assumptions
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// that the caller wants to use blackfriday's HTMLRenderer with XHTML
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func OrgCommon(input []byte) []byte {
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renderer := blackfriday.HtmlRenderer(blackfriday.HTML_USE_XHTML, "", "")
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return OrgOptions(input, renderer)
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}
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// Org is a convenience name for OrgOptions
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func Org(input []byte, renderer blackfriday.Renderer) []byte {
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return OrgOptions(input, renderer)
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}
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// OrgOptions takes an org content byte slice and a renderer to use
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func OrgOptions(input []byte, renderer blackfriday.Renderer) []byte {
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// in the case that we need to render something in isEmpty but there isn't a new line char
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input = append(input, '\n')
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var output bytes.Buffer
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p := NewParser(renderer)
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scanner := bufio.NewScanner(bytes.NewReader(input))
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// used to capture code blocks
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marker := ""
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syntax := ""
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listType := ""
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inParagraph := false
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inList := false
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inTable := false
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inFixedWidthArea := false
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var tmpBlock bytes.Buffer
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for scanner.Scan() {
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data := scanner.Bytes()
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if !isEmpty(data) && isComment(data) || IsKeyword(data) {
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switch {
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case inList:
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if tmpBlock.Len() > 0 {
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p.generateList(&output, tmpBlock.Bytes(), listType)
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}
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inList = false
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listType = ""
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tmpBlock.Reset()
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case inTable:
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if tmpBlock.Len() > 0 {
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p.generateTable(&output, tmpBlock.Bytes())
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}
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inTable = false
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tmpBlock.Reset()
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case inParagraph:
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if tmpBlock.Len() > 0 {
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p.generateParagraph(&output, tmpBlock.Bytes()[:len(tmpBlock.Bytes())-1])
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}
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inParagraph = false
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tmpBlock.Reset()
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case inFixedWidthArea:
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if tmpBlock.Len() > 0 {
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tmpBlock.WriteString("</pre>\n")
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output.Write(tmpBlock.Bytes())
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}
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inFixedWidthArea = false
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tmpBlock.Reset()
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}
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}
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switch {
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case isEmpty(data):
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switch {
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case inList:
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if tmpBlock.Len() > 0 {
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p.generateList(&output, tmpBlock.Bytes(), listType)
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}
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inList = false
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listType = ""
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tmpBlock.Reset()
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case inTable:
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if tmpBlock.Len() > 0 {
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p.generateTable(&output, tmpBlock.Bytes())
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}
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inTable = false
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tmpBlock.Reset()
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case inParagraph:
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if tmpBlock.Len() > 0 {
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p.generateParagraph(&output, tmpBlock.Bytes()[:len(tmpBlock.Bytes())-1])
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}
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inParagraph = false
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tmpBlock.Reset()
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case inFixedWidthArea:
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if tmpBlock.Len() > 0 {
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tmpBlock.WriteString("</pre>\n")
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output.Write(tmpBlock.Bytes())
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}
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inFixedWidthArea = false
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tmpBlock.Reset()
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case marker != "":
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tmpBlock.WriteByte('\n')
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default:
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continue
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}
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case isPropertyDrawer(data) || marker == "PROPERTIES":
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if marker == "" {
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marker = "PROPERTIES"
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}
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if bytes.Equal(data, []byte(":END:")) {
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marker = ""
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}
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continue
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case isBlock(data) || marker != "":
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matches := reBlock.FindSubmatch(data)
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if len(matches) > 0 {
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if string(matches[1]) == "END" {
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switch marker {
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case "QUOTE":
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var tmpBuf bytes.Buffer
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p.inline(&tmpBuf, tmpBlock.Bytes())
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p.r.BlockQuote(&output, tmpBuf.Bytes())
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case "CENTER":
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var tmpBuf bytes.Buffer
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output.WriteString("<center>\n")
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p.inline(&tmpBuf, tmpBlock.Bytes())
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output.Write(tmpBuf.Bytes())
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output.WriteString("</center>\n")
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default:
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tmpBlock.WriteByte('\n')
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p.r.BlockCode(&output, tmpBlock.Bytes(), syntax)
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}
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marker = ""
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tmpBlock.Reset()
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continue
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}
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}
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if marker != "" {
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if marker != "SRC" && marker != "EXAMPLE" {
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var tmpBuf bytes.Buffer
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tmpBuf.Write([]byte("<p>\n"))
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p.inline(&tmpBuf, data)
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tmpBuf.WriteByte('\n')
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tmpBuf.Write([]byte("</p>\n"))
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tmpBlock.Write(tmpBuf.Bytes())
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} else {
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tmpBlock.WriteByte('\n')
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tmpBlock.Write(data)
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}
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} else {
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marker = string(matches[2])
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syntax = string(matches[3])
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}
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case isFootnoteDef(data):
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matches := reFootnoteDef.FindSubmatch(data)
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for i := range p.notes {
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if p.notes[i].id == string(matches[1]) {
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p.notes[i].def = string(matches[2])
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}
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}
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case isTable(data):
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if inTable != true {
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inTable = true
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}
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tmpBlock.Write(data)
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tmpBlock.WriteByte('\n')
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case IsKeyword(data):
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continue
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case isComment(data):
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p.generateComment(&output, data)
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case isHeadline(data):
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p.generateHeadline(&output, data)
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case isDefinitionList(data):
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if inList != true {
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listType = "dl"
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inList = true
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}
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var work bytes.Buffer
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flags := blackfriday.LIST_TYPE_DEFINITION
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matches := reDefinitionList.FindSubmatch(data)
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flags |= blackfriday.LIST_TYPE_TERM
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p.inline(&work, matches[1])
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p.r.ListItem(&tmpBlock, work.Bytes(), flags)
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work.Reset()
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flags &= ^blackfriday.LIST_TYPE_TERM
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p.inline(&work, matches[2])
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p.r.ListItem(&tmpBlock, work.Bytes(), flags)
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case isUnorderedList(data):
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if inList != true {
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listType = "ul"
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inList = true
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}
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matches := reUnorderedList.FindSubmatch(data)
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var work bytes.Buffer
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p.inline(&work, matches[2])
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p.r.ListItem(&tmpBlock, work.Bytes(), 0)
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case isOrderedList(data):
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if inList != true {
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listType = "ol"
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inList = true
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}
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matches := reOrderedList.FindSubmatch(data)
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var work bytes.Buffer
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tmpBlock.WriteString("<li")
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if len(matches[2]) > 0 {
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tmpBlock.WriteString(" value=\"")
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tmpBlock.Write(matches[2])
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tmpBlock.WriteString("\"")
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matches[3] = matches[3][1:]
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}
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p.inline(&work, matches[3])
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tmpBlock.WriteString(">")
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tmpBlock.Write(work.Bytes())
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tmpBlock.WriteString("</li>\n")
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case isHorizontalRule(data):
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p.r.HRule(&output)
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case isExampleLine(data):
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if inParagraph == true {
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if len(tmpBlock.Bytes()) > 0 {
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p.generateParagraph(&output, tmpBlock.Bytes()[:len(tmpBlock.Bytes())-1])
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inParagraph = false
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}
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tmpBlock.Reset()
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}
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if inFixedWidthArea != true {
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tmpBlock.WriteString("<pre class=\"example\">\n")
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inFixedWidthArea = true
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}
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matches := reExampleLine.FindSubmatch(data)
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tmpBlock.Write(matches[1])
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tmpBlock.WriteString("\n")
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break
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default:
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if inParagraph == false {
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inParagraph = true
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if inFixedWidthArea == true {
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if tmpBlock.Len() > 0 {
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tmpBlock.WriteString("</pre>")
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output.Write(tmpBlock.Bytes())
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}
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inFixedWidthArea = false
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tmpBlock.Reset()
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}
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}
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tmpBlock.Write(data)
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tmpBlock.WriteByte('\n')
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}
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}
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if len(tmpBlock.Bytes()) > 0 {
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if inParagraph == true {
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p.generateParagraph(&output, tmpBlock.Bytes()[:len(tmpBlock.Bytes())-1])
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} else if inFixedWidthArea == true {
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tmpBlock.WriteString("</pre>\n")
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output.Write(tmpBlock.Bytes())
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}
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}
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// Writing footnote def. list
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if len(p.notes) > 0 {
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flags := blackfriday.LIST_ITEM_BEGINNING_OF_LIST
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p.r.Footnotes(&output, func() bool {
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for i := range p.notes {
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p.r.FootnoteItem(&output, []byte(p.notes[i].id), []byte(p.notes[i].def), flags)
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}
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return true
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})
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}
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return output.Bytes()
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}
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// Org Syntax has been broken up into 4 distinct sections based on
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// the org-syntax draft (http://orgmode.org/worg/dev/org-syntax.html):
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// - Headlines
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// - Greater Elements
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// - Elements
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// - Objects
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// Headlines
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func isHeadline(data []byte) bool {
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if !charMatches(data[0], '*') {
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return false
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}
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level := 0
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for level < 6 && charMatches(data[level], '*') {
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level++
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}
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return charMatches(data[level], ' ')
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}
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func (p *parser) generateHeadline(out *bytes.Buffer, data []byte) {
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level := 1
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status := ""
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priority := ""
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|
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for level < 6 && data[level] == '*' {
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level++
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}
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start := skipChar(data, level, ' ')
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data = data[start:]
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i := 0
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// Check if has a status so it can be rendered as a separate span that can be hidden or
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// modified with CSS classes
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if hasStatus(data[i:4]) {
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status = string(data[i:4])
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i += 5 // one extra character for the next whitespace
|
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}
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|
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// Check if the next byte is a priority marker
|
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if data[i] == '[' && hasPriority(data[i+1]) {
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priority = string(data[i+1])
|
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i += 4 // for "[c]" + ' '
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}
|
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|
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tags, tagsFound := findTags(data, i)
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|
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headlineID := sanitized_anchor_name.Create(string(data[i:]))
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generate := func() bool {
|
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dataEnd := len(data)
|
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if tagsFound > 0 {
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dataEnd = tagsFound
|
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}
|
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|
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headline := bytes.TrimRight(data[i:dataEnd], " \t")
|
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|
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if status != "" {
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out.WriteString("<span class=\"todo " + status + "\">" + status + "</span>")
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out.WriteByte(' ')
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}
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|
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if priority != "" {
|
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out.WriteString("<span class=\"priority " + priority + "\">[" + priority + "]</span>")
|
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out.WriteByte(' ')
|
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}
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|
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p.inline(out, headline)
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|
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if tagsFound > 0 {
|
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for _, tag := range tags {
|
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out.WriteByte(' ')
|
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out.WriteString("<span class=\"tags " + tag + "\">" + tag + "</span>")
|
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out.WriteByte(' ')
|
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}
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}
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return true
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}
|
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|
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p.r.Header(out, generate, level, headlineID)
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}
|
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|
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func hasStatus(data []byte) bool {
|
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return bytes.Contains(data, []byte("TODO")) || bytes.Contains(data, []byte("DONE"))
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}
|
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|
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func hasPriority(char byte) bool {
|
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return (charMatches(char, 'A') || charMatches(char, 'B') || charMatches(char, 'C'))
|
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}
|
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|
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func findTags(data []byte, start int) ([]string, int) {
|
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tags := []string{}
|
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tagOpener := 0
|
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tagMarker := tagOpener
|
||||
for tIdx := start; tIdx < len(data); tIdx++ {
|
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if tagMarker > 0 && data[tIdx] == ':' {
|
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tags = append(tags, string(data[tagMarker+1:tIdx]))
|
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tagMarker = tIdx
|
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}
|
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if data[tIdx] == ':' && tagOpener == 0 && data[tIdx-1] == ' ' {
|
||||
tagMarker = tIdx
|
||||
tagOpener = tIdx
|
||||
}
|
||||
}
|
||||
return tags, tagOpener
|
||||
}
|
||||
|
||||
// Greater Elements
|
||||
// ~~ Definition Lists
|
||||
var reDefinitionList = regexp.MustCompile(`^\s*-\s+(.+?)\s+::\s+(.*)`)
|
||||
|
||||
func isDefinitionList(data []byte) bool {
|
||||
return reDefinitionList.Match(data)
|
||||
}
|
||||
|
||||
// ~~ Example lines
|
||||
var reExampleLine = regexp.MustCompile(`^\s*:\s(\s*.*)|^\s*:$`)
|
||||
|
||||
func isExampleLine(data []byte) bool {
|
||||
return reExampleLine.Match(data)
|
||||
}
|
||||
|
||||
// ~~ Ordered Lists
|
||||
var reOrderedList = regexp.MustCompile(`^(\s*)\d+\.\s+\[?@?(\d*)\]?(.+)`)
|
||||
|
||||
func isOrderedList(data []byte) bool {
|
||||
return reOrderedList.Match(data)
|
||||
}
|
||||
|
||||
// ~~ Unordered Lists
|
||||
var reUnorderedList = regexp.MustCompile(`^(\s*)[-\+]\s+(.+)`)
|
||||
|
||||
func isUnorderedList(data []byte) bool {
|
||||
return reUnorderedList.Match(data)
|
||||
}
|
||||
|
||||
// ~~ Tables
|
||||
var reTableHeaders = regexp.MustCompile(`^[|+-]*$`)
|
||||
|
||||
func isTable(data []byte) bool {
|
||||
return charMatches(data[0], '|')
|
||||
}
|
||||
|
||||
func (p *parser) generateTable(output *bytes.Buffer, data []byte) {
|
||||
var table bytes.Buffer
|
||||
rows := bytes.Split(bytes.Trim(data, "\n"), []byte("\n"))
|
||||
hasTableHeaders := len(rows) > 1
|
||||
if len(rows) > 1 {
|
||||
hasTableHeaders = reTableHeaders.Match(rows[1])
|
||||
}
|
||||
tbodySet := false
|
||||
|
||||
for idx, row := range rows {
|
||||
var rowBuff bytes.Buffer
|
||||
if hasTableHeaders && idx == 0 {
|
||||
table.WriteString("<thead>")
|
||||
for _, cell := range bytes.Split(row[1:len(row)-1], []byte("|")) {
|
||||
p.r.TableHeaderCell(&rowBuff, bytes.Trim(cell, " \t"), 0)
|
||||
}
|
||||
p.r.TableRow(&table, rowBuff.Bytes())
|
||||
table.WriteString("</thead>\n")
|
||||
} else if hasTableHeaders && idx == 1 {
|
||||
continue
|
||||
} else {
|
||||
if !tbodySet {
|
||||
table.WriteString("<tbody>")
|
||||
tbodySet = true
|
||||
}
|
||||
if !reTableHeaders.Match(row) {
|
||||
for _, cell := range bytes.Split(row[1:len(row)-1], []byte("|")) {
|
||||
var cellBuff bytes.Buffer
|
||||
p.inline(&cellBuff, bytes.Trim(cell, " \t"))
|
||||
p.r.TableCell(&rowBuff, cellBuff.Bytes(), 0)
|
||||
}
|
||||
p.r.TableRow(&table, rowBuff.Bytes())
|
||||
}
|
||||
if tbodySet && idx == len(rows)-1 {
|
||||
table.WriteString("</tbody>\n")
|
||||
tbodySet = false
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
output.WriteString("\n<table>\n")
|
||||
output.Write(table.Bytes())
|
||||
output.WriteString("</table>\n")
|
||||
}
|
||||
|
||||
// ~~ Property Drawers
|
||||
|
||||
func isPropertyDrawer(data []byte) bool {
|
||||
return bytes.Equal(data, []byte(":PROPERTIES:"))
|
||||
}
|
||||
|
||||
// ~~ Dynamic Blocks
|
||||
var reBlock = regexp.MustCompile(`^#\+(BEGIN|END)_(\w+)\s*([0-9A-Za-z_\-]*)?`)
|
||||
|
||||
func isBlock(data []byte) bool {
|
||||
return reBlock.Match(data)
|
||||
}
|
||||
|
||||
// ~~ Footnotes
|
||||
var reFootnoteDef = regexp.MustCompile(`^\[fn:([\w]+)\] +(.+)`)
|
||||
|
||||
func isFootnoteDef(data []byte) bool {
|
||||
return reFootnoteDef.Match(data)
|
||||
}
|
||||
|
||||
// Elements
|
||||
// ~~ Keywords
|
||||
func IsKeyword(data []byte) bool {
|
||||
return len(data) > 2 && charMatches(data[0], '#') && charMatches(data[1], '+') && !charMatches(data[2], ' ')
|
||||
}
|
||||
|
||||
// ~~ Comments
|
||||
func isComment(data []byte) bool {
|
||||
return charMatches(data[0], '#') && charMatches(data[1], ' ')
|
||||
}
|
||||
|
||||
func (p *parser) generateComment(out *bytes.Buffer, data []byte) {
|
||||
var work bytes.Buffer
|
||||
work.WriteString("<!-- ")
|
||||
work.Write(data[2:])
|
||||
work.WriteString(" -->")
|
||||
work.WriteByte('\n')
|
||||
out.Write(work.Bytes())
|
||||
}
|
||||
|
||||
// ~~ Horizontal Rules
|
||||
var reHorizontalRule = regexp.MustCompile(`^\s*?-----\s?$`)
|
||||
|
||||
func isHorizontalRule(data []byte) bool {
|
||||
return reHorizontalRule.Match(data)
|
||||
}
|
||||
|
||||
// ~~ Paragraphs
|
||||
func (p *parser) generateParagraph(out *bytes.Buffer, data []byte) {
|
||||
generate := func() bool {
|
||||
p.inline(out, bytes.Trim(data, " "))
|
||||
return true
|
||||
}
|
||||
p.r.Paragraph(out, generate)
|
||||
}
|
||||
|
||||
func (p *parser) generateList(output *bytes.Buffer, data []byte, listType string) {
|
||||
generateList := func() bool {
|
||||
output.WriteByte('\n')
|
||||
p.inline(output, bytes.Trim(data, " "))
|
||||
return true
|
||||
}
|
||||
switch listType {
|
||||
case "ul":
|
||||
p.r.List(output, generateList, 0)
|
||||
case "ol":
|
||||
p.r.List(output, generateList, blackfriday.LIST_TYPE_ORDERED)
|
||||
case "dl":
|
||||
p.r.List(output, generateList, blackfriday.LIST_TYPE_DEFINITION)
|
||||
}
|
||||
}
|
||||
|
||||
// Objects
|
||||
|
||||
func (p *parser) inline(out *bytes.Buffer, data []byte) {
|
||||
i, end := 0, 0
|
||||
|
||||
for i < len(data) {
|
||||
for end < len(data) && p.inlineCallback[data[end]] == nil {
|
||||
end++
|
||||
}
|
||||
|
||||
p.r.Entity(out, data[i:end])
|
||||
|
||||
if end >= len(data) {
|
||||
break
|
||||
}
|
||||
i = end
|
||||
|
||||
handler := p.inlineCallback[data[i]]
|
||||
|
||||
if consumed := handler(p, out, data, i); consumed > 0 {
|
||||
i += consumed
|
||||
end = i
|
||||
continue
|
||||
}
|
||||
|
||||
end = i + 1
|
||||
}
|
||||
}
|
||||
|
||||
func isAcceptablePreOpeningChar(dataIn, data []byte, offset int) bool {
|
||||
if len(dataIn) == len(data) {
|
||||
return true
|
||||
}
|
||||
|
||||
char := dataIn[offset-1]
|
||||
return charMatches(char, ' ') || isPreChar(char)
|
||||
}
|
||||
|
||||
func isPreChar(char byte) bool {
|
||||
return charMatches(char, '>') || charMatches(char, '(') || charMatches(char, '{') || charMatches(char, '[')
|
||||
}
|
||||
|
||||
func isAcceptablePostClosingChar(char byte) bool {
|
||||
return charMatches(char, ' ') || isTerminatingChar(char)
|
||||
}
|
||||
|
||||
func isTerminatingChar(char byte) bool {
|
||||
return charMatches(char, '.') || charMatches(char, ',') || charMatches(char, '?') || charMatches(char, '!') || charMatches(char, ')') || charMatches(char, '}') || charMatches(char, ']')
|
||||
}
|
||||
|
||||
func findLastCharInInline(data []byte, char byte) int {
|
||||
timesFound := 0
|
||||
last := 0
|
||||
// Start from character after the inline indicator
|
||||
for i := 1; i < len(data); i++ {
|
||||
if timesFound == 1 {
|
||||
break
|
||||
}
|
||||
if data[i] == char {
|
||||
if len(data) == i+1 || (len(data) > i+1 && isAcceptablePostClosingChar(data[i+1])) {
|
||||
last = i
|
||||
timesFound += 1
|
||||
}
|
||||
}
|
||||
}
|
||||
return last
|
||||
}
|
||||
|
||||
func generator(p *parser, out *bytes.Buffer, dataIn []byte, offset int, char byte, doInline bool, renderer func(*bytes.Buffer, []byte)) int {
|
||||
data := dataIn[offset:]
|
||||
c := byte(char)
|
||||
start := 1
|
||||
i := start
|
||||
if len(data) <= 1 {
|
||||
return 0
|
||||
}
|
||||
|
||||
lastCharInside := findLastCharInInline(data, c)
|
||||
|
||||
// Org mode spec says a non-whitespace character must immediately follow.
|
||||
// if the current char is the marker, then there's no text between, not a candidate
|
||||
if isSpace(data[i]) || lastCharInside == i || !isAcceptablePreOpeningChar(dataIn, data, offset) {
|
||||
return 0
|
||||
}
|
||||
|
||||
if lastCharInside > 0 {
|
||||
var work bytes.Buffer
|
||||
if doInline {
|
||||
p.inline(&work, data[start:lastCharInside])
|
||||
renderer(out, work.Bytes())
|
||||
} else {
|
||||
renderer(out, data[start:lastCharInside])
|
||||
}
|
||||
next := lastCharInside + 1
|
||||
return next
|
||||
}
|
||||
|
||||
return 0
|
||||
}
|
||||
|
||||
// ~~ Text Markup
|
||||
func generateVerbatim(p *parser, out *bytes.Buffer, data []byte, offset int) int {
|
||||
return generator(p, out, data, offset, '=', false, p.r.CodeSpan)
|
||||
}
|
||||
|
||||
func generateCode(p *parser, out *bytes.Buffer, data []byte, offset int) int {
|
||||
return generator(p, out, data, offset, '~', false, p.r.CodeSpan)
|
||||
}
|
||||
|
||||
func generateEmphasis(p *parser, out *bytes.Buffer, data []byte, offset int) int {
|
||||
return generator(p, out, data, offset, '/', true, p.r.Emphasis)
|
||||
}
|
||||
|
||||
func generateUnderline(p *parser, out *bytes.Buffer, data []byte, offset int) int {
|
||||
underline := func(out *bytes.Buffer, text []byte) {
|
||||
out.WriteString("<span style=\"text-decoration: underline;\">")
|
||||
out.Write(text)
|
||||
out.WriteString("</span>")
|
||||
}
|
||||
|
||||
return generator(p, out, data, offset, '_', true, underline)
|
||||
}
|
||||
|
||||
func generateBold(p *parser, out *bytes.Buffer, data []byte, offset int) int {
|
||||
return generator(p, out, data, offset, '*', true, p.r.DoubleEmphasis)
|
||||
}
|
||||
|
||||
func generateStrikethrough(p *parser, out *bytes.Buffer, data []byte, offset int) int {
|
||||
return generator(p, out, data, offset, '+', true, p.r.StrikeThrough)
|
||||
}
|
||||
|
||||
// ~~ Images and Links (inc. Footnote)
|
||||
var reLinkOrImg = regexp.MustCompile(`\[\[(.+?)\]\[?(.*?)\]?\]`)
|
||||
|
||||
func generateLinkOrImg(p *parser, out *bytes.Buffer, data []byte, offset int) int {
|
||||
data = data[offset+1:]
|
||||
start := 1
|
||||
i := start
|
||||
var hyperlink []byte
|
||||
isImage := false
|
||||
isFootnote := false
|
||||
closedLink := false
|
||||
hasContent := false
|
||||
|
||||
if bytes.Equal(data[0:3], []byte("fn:")) {
|
||||
isFootnote = true
|
||||
} else if data[0] != '[' {
|
||||
return 0
|
||||
}
|
||||
|
||||
if bytes.Equal(data[1:6], []byte("file:")) {
|
||||
isImage = true
|
||||
}
|
||||
|
||||
for i < len(data) {
|
||||
currChar := data[i]
|
||||
switch {
|
||||
case charMatches(currChar, ']') && closedLink == false:
|
||||
if isImage {
|
||||
hyperlink = data[start+5 : i]
|
||||
} else if isFootnote {
|
||||
refid := data[start+2 : i]
|
||||
if bytes.Equal(refid, bytes.Trim(refid, " ")) {
|
||||
p.notes = append(p.notes, footnotes{string(refid), "DEFINITION NOT FOUND"})
|
||||
p.r.FootnoteRef(out, refid, len(p.notes))
|
||||
return i + 2
|
||||
} else {
|
||||
return 0
|
||||
}
|
||||
} else if bytes.Equal(data[i-4:i], []byte(".org")) {
|
||||
orgStart := start
|
||||
if bytes.Equal(data[orgStart:orgStart+2], []byte("./")) {
|
||||
orgStart = orgStart + 1
|
||||
}
|
||||
hyperlink = data[orgStart : i-4]
|
||||
} else {
|
||||
hyperlink = data[start:i]
|
||||
}
|
||||
closedLink = true
|
||||
case charMatches(currChar, '['):
|
||||
start = i + 1
|
||||
hasContent = true
|
||||
case charMatches(currChar, ']') && closedLink == true && hasContent == true && isImage == true:
|
||||
p.r.Image(out, hyperlink, data[start:i], data[start:i])
|
||||
return i + 3
|
||||
case charMatches(currChar, ']') && closedLink == true && hasContent == true:
|
||||
var tmpBuf bytes.Buffer
|
||||
p.inline(&tmpBuf, data[start:i])
|
||||
p.r.Link(out, hyperlink, tmpBuf.Bytes(), tmpBuf.Bytes())
|
||||
return i + 3
|
||||
case charMatches(currChar, ']') && closedLink == true && hasContent == false && isImage == true:
|
||||
p.r.Image(out, hyperlink, hyperlink, hyperlink)
|
||||
return i + 2
|
||||
case charMatches(currChar, ']') && closedLink == true && hasContent == false:
|
||||
p.r.Link(out, hyperlink, hyperlink, hyperlink)
|
||||
return i + 2
|
||||
}
|
||||
i++
|
||||
}
|
||||
|
||||
return 0
|
||||
}
|
||||
|
||||
// Helpers
|
||||
func skipChar(data []byte, start int, char byte) int {
|
||||
i := start
|
||||
for i < len(data) && charMatches(data[i], char) {
|
||||
i++
|
||||
}
|
||||
return i
|
||||
}
|
||||
|
||||
func isSpace(char byte) bool {
|
||||
return charMatches(char, ' ')
|
||||
}
|
||||
|
||||
func isEmpty(data []byte) bool {
|
||||
if len(data) == 0 {
|
||||
return true
|
||||
}
|
||||
|
||||
for i := 0; i < len(data) && !charMatches(data[i], '\n'); i++ {
|
||||
if !charMatches(data[i], ' ') && !charMatches(data[i], '\t') {
|
||||
return false
|
||||
}
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
func charMatches(a byte, b byte) bool {
|
||||
return a == b
|
||||
}
|
||||
Binary file not shown.
|
Before Width: | Height: | Size: 15 KiB |
Binary file not shown.
|
Before Width: | Height: | Size: 3.2 KiB |
@ -1,70 +0,0 @@
|
||||
package goorgeous
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"bytes"
|
||||
"regexp"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// ExtractOrgHeaders finds and returns all of the headers
|
||||
// from a bufio.Reader and returns them as their own byte slice
|
||||
func ExtractOrgHeaders(r *bufio.Reader) (fm []byte, err error) {
|
||||
var out bytes.Buffer
|
||||
endOfHeaders := true
|
||||
for endOfHeaders {
|
||||
p, err := r.Peek(2)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if !charMatches(p[0], '#') && !charMatches(p[1], '+') {
|
||||
endOfHeaders = false
|
||||
break
|
||||
}
|
||||
line, _, err := r.ReadLine()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
out.Write(line)
|
||||
out.WriteByte('\n')
|
||||
}
|
||||
return out.Bytes(), nil
|
||||
}
|
||||
|
||||
var reHeader = regexp.MustCompile(`^#\+(\w+?): (.*)`)
|
||||
|
||||
// OrgHeaders find all of the headers from a byte slice and returns
|
||||
// them as a map of string interface
|
||||
func OrgHeaders(input []byte) (map[string]interface{}, error) {
|
||||
out := make(map[string]interface{})
|
||||
scanner := bufio.NewScanner(bytes.NewReader(input))
|
||||
|
||||
for scanner.Scan() {
|
||||
data := scanner.Bytes()
|
||||
if !charMatches(data[0], '#') && !charMatches(data[1], '+') {
|
||||
return out, nil
|
||||
}
|
||||
matches := reHeader.FindSubmatch(data)
|
||||
|
||||
if len(matches) < 3 {
|
||||
continue
|
||||
}
|
||||
|
||||
key := string(matches[1])
|
||||
val := matches[2]
|
||||
switch {
|
||||
case strings.ToLower(key) == "tags" || strings.ToLower(key) == "categories" || strings.ToLower(key) == "aliases":
|
||||
bTags := bytes.Split(val, []byte(" "))
|
||||
tags := make([]string, len(bTags))
|
||||
for idx, tag := range bTags {
|
||||
tags[idx] = string(tag)
|
||||
}
|
||||
out[key] = tags
|
||||
default:
|
||||
out[key] = string(val)
|
||||
}
|
||||
|
||||
}
|
||||
return out, nil
|
||||
|
||||
}
|
||||
@ -1,6 +1,6 @@
|
||||
MIT License
|
||||
|
||||
Copyright (c) 2017 Chase Adams <realchaseadams@gmail.com>
|
||||
Copyright (c) 2018 Niklas Fasching
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
of this software and associated documentation files (the "Software"), to deal
|
||||
@ -0,0 +1,84 @@
|
||||
package org
|
||||
|
||||
import (
|
||||
"regexp"
|
||||
"strings"
|
||||
"unicode"
|
||||
)
|
||||
|
||||
type Block struct {
|
||||
Name string
|
||||
Parameters []string
|
||||
Children []Node
|
||||
}
|
||||
|
||||
type Example struct {
|
||||
Children []Node
|
||||
}
|
||||
|
||||
var exampleLineRegexp = regexp.MustCompile(`^(\s*):(\s(.*)|\s*$)`)
|
||||
var beginBlockRegexp = regexp.MustCompile(`(?i)^(\s*)#\+BEGIN_(\w+)(.*)`)
|
||||
var endBlockRegexp = regexp.MustCompile(`(?i)^(\s*)#\+END_(\w+)`)
|
||||
|
||||
func lexBlock(line string) (token, bool) {
|
||||
if m := beginBlockRegexp.FindStringSubmatch(line); m != nil {
|
||||
return token{"beginBlock", len(m[1]), strings.ToUpper(m[2]), m}, true
|
||||
} else if m := endBlockRegexp.FindStringSubmatch(line); m != nil {
|
||||
return token{"endBlock", len(m[1]), strings.ToUpper(m[2]), m}, true
|
||||
}
|
||||
return nilToken, false
|
||||
}
|
||||
|
||||
func lexExample(line string) (token, bool) {
|
||||
if m := exampleLineRegexp.FindStringSubmatch(line); m != nil {
|
||||
return token{"example", len(m[1]), m[3], m}, true
|
||||
}
|
||||
return nilToken, false
|
||||
}
|
||||
|
||||
func isRawTextBlock(name string) bool { return name == "SRC" || name == "EXAMPLE" || name == "EXPORT" }
|
||||
|
||||
func (d *Document) parseBlock(i int, parentStop stopFn) (int, Node) {
|
||||
t, start := d.tokens[i], i
|
||||
name, parameters := t.content, strings.Fields(t.matches[3])
|
||||
trim := trimIndentUpTo(d.tokens[i].lvl)
|
||||
stop := func(d *Document, i int) bool {
|
||||
return i >= len(d.tokens) || (d.tokens[i].kind == "endBlock" && d.tokens[i].content == name)
|
||||
}
|
||||
block, i := Block{name, parameters, nil}, i+1
|
||||
if isRawTextBlock(name) {
|
||||
rawText := ""
|
||||
for ; !stop(d, i); i++ {
|
||||
rawText += trim(d.tokens[i].matches[0]) + "\n"
|
||||
}
|
||||
block.Children = d.parseRawInline(rawText)
|
||||
} else {
|
||||
consumed, nodes := d.parseMany(i, stop)
|
||||
block.Children = nodes
|
||||
i += consumed
|
||||
}
|
||||
if i < len(d.tokens) && d.tokens[i].kind == "endBlock" && d.tokens[i].content == name {
|
||||
return i + 1 - start, block
|
||||
}
|
||||
return 0, nil
|
||||
}
|
||||
|
||||
func (d *Document) parseExample(i int, parentStop stopFn) (int, Node) {
|
||||
example, start := Example{}, i
|
||||
for ; !parentStop(d, i) && d.tokens[i].kind == "example"; i++ {
|
||||
example.Children = append(example.Children, Text{d.tokens[i].content, true})
|
||||
}
|
||||
return i - start, example
|
||||
}
|
||||
|
||||
func trimIndentUpTo(max int) func(string) string {
|
||||
return func(line string) string {
|
||||
i := 0
|
||||
for ; i < len(line) && i < max && unicode.IsSpace(rune(line[i])); i++ {
|
||||
}
|
||||
return line[i:]
|
||||
}
|
||||
}
|
||||
|
||||
func (n Example) String() string { return orgWriter.nodesAsString(n) }
|
||||
func (n Block) String() string { return orgWriter.nodesAsString(n) }
|
||||
@ -0,0 +1,260 @@
|
||||
// Package org is an Org mode syntax processor.
|
||||
//
|
||||
// It parses plain text into an AST and can export it as HTML or pretty printed Org mode syntax.
|
||||
// Further export formats can be defined using the Writer interface.
|
||||
//
|
||||
// You probably want to start with something like this:
|
||||
// input := strings.NewReader("Your Org mode input")
|
||||
// html, err := org.New().Parse(input, "./").Write(org.NewHTMLWriter())
|
||||
// if err != nil {
|
||||
// log.Fatalf("Something went wrong: %s", err)
|
||||
// }
|
||||
// log.Print(html)
|
||||
package org
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"fmt"
|
||||
"io"
|
||||
"io/ioutil"
|
||||
"log"
|
||||
"os"
|
||||
"strings"
|
||||
)
|
||||
|
||||
type Configuration struct {
|
||||
MaxEmphasisNewLines int // Maximum number of newlines inside an emphasis. See org-emphasis-regexp-components newline.
|
||||
AutoLink bool // Try to convert text passages that look like hyperlinks into hyperlinks.
|
||||
DefaultSettings map[string]string // Default values for settings that are overriden by setting the same key in BufferSettings.
|
||||
Log *log.Logger // Log is used to print warnings during parsing.
|
||||
ReadFile func(filename string) ([]byte, error) // ReadFile is used to read e.g. #+INCLUDE files.
|
||||
}
|
||||
|
||||
// Document contains the parsing results and a pointer to the Configuration.
|
||||
type Document struct {
|
||||
*Configuration
|
||||
Path string // Path of the file containing the parse input - used to resolve relative paths during parsing (e.g. INCLUDE).
|
||||
tokens []token
|
||||
Nodes []Node
|
||||
NamedNodes map[string]Node
|
||||
Outline Outline // Outline is a Table Of Contents for the document and contains all sections (headline + content).
|
||||
BufferSettings map[string]string // Settings contains all settings that were parsed from keywords.
|
||||
Error error
|
||||
}
|
||||
|
||||
// Node represents a parsed node of the document.
|
||||
type Node interface {
|
||||
String() string // String returns the pretty printed Org mode string for the node (see OrgWriter).
|
||||
}
|
||||
|
||||
type lexFn = func(line string) (t token, ok bool)
|
||||
type parseFn = func(*Document, int, stopFn) (int, Node)
|
||||
type stopFn = func(*Document, int) bool
|
||||
|
||||
type token struct {
|
||||
kind string
|
||||
lvl int
|
||||
content string
|
||||
matches []string
|
||||
}
|
||||
|
||||
var lexFns = []lexFn{
|
||||
lexHeadline,
|
||||
lexDrawer,
|
||||
lexBlock,
|
||||
lexList,
|
||||
lexTable,
|
||||
lexHorizontalRule,
|
||||
lexKeywordOrComment,
|
||||
lexFootnoteDefinition,
|
||||
lexExample,
|
||||
lexText,
|
||||
}
|
||||
|
||||
var nilToken = token{"nil", -1, "", nil}
|
||||
var orgWriter = NewOrgWriter()
|
||||
|
||||
// New returns a new Configuration with (hopefully) sane defaults.
|
||||
func New() *Configuration {
|
||||
return &Configuration{
|
||||
AutoLink: true,
|
||||
MaxEmphasisNewLines: 1,
|
||||
DefaultSettings: map[string]string{
|
||||
"TODO": "TODO | DONE",
|
||||
"EXCLUDE_TAGS": "noexport",
|
||||
"OPTIONS": "toc:t <:t e:t f:t pri:t todo:t tags:t",
|
||||
},
|
||||
Log: log.New(os.Stderr, "go-org: ", 0),
|
||||
ReadFile: ioutil.ReadFile,
|
||||
}
|
||||
}
|
||||
|
||||
// String returns the pretty printed Org mode string for the given nodes (see OrgWriter).
|
||||
func String(nodes []Node) string { return orgWriter.nodesAsString(nodes...) }
|
||||
|
||||
// Write is called after with an instance of the Writer interface to export a parsed Document into another format.
|
||||
func (d *Document) Write(w Writer) (out string, err error) {
|
||||
defer func() {
|
||||
if recovered := recover(); recovered != nil {
|
||||
err = fmt.Errorf("could not write output: %s", recovered)
|
||||
}
|
||||
}()
|
||||
if d.Error != nil {
|
||||
return "", d.Error
|
||||
} else if d.Nodes == nil {
|
||||
return "", fmt.Errorf("could not write output: parse was not called")
|
||||
}
|
||||
w.Before(d)
|
||||
WriteNodes(w, d.Nodes...)
|
||||
w.After(d)
|
||||
return w.String(), err
|
||||
}
|
||||
|
||||
// Parse parses the input into an AST (and some other helpful fields like Outline).
|
||||
// To allow method chaining, errors are stored in document.Error rather than being returned.
|
||||
func (c *Configuration) Parse(input io.Reader, path string) (d *Document) {
|
||||
outlineSection := &Section{}
|
||||
d = &Document{
|
||||
Configuration: c,
|
||||
Outline: Outline{outlineSection, outlineSection, 0},
|
||||
BufferSettings: map[string]string{},
|
||||
NamedNodes: map[string]Node{},
|
||||
Path: path,
|
||||
}
|
||||
defer func() {
|
||||
if recovered := recover(); recovered != nil {
|
||||
d.Error = fmt.Errorf("could not parse input: %v", recovered)
|
||||
}
|
||||
}()
|
||||
if d.tokens != nil {
|
||||
d.Error = fmt.Errorf("parse was called multiple times")
|
||||
}
|
||||
d.tokenize(input)
|
||||
_, nodes := d.parseMany(0, func(d *Document, i int) bool { return i >= len(d.tokens) })
|
||||
d.Nodes = nodes
|
||||
return d
|
||||
}
|
||||
|
||||
// Silent disables all logging of warnings during parsing.
|
||||
func (c *Configuration) Silent() *Configuration {
|
||||
c.Log = log.New(ioutil.Discard, "", 0)
|
||||
return c
|
||||
}
|
||||
|
||||
func (d *Document) tokenize(input io.Reader) {
|
||||
d.tokens = []token{}
|
||||
scanner := bufio.NewScanner(input)
|
||||
for scanner.Scan() {
|
||||
d.tokens = append(d.tokens, tokenize(scanner.Text()))
|
||||
}
|
||||
if err := scanner.Err(); err != nil {
|
||||
d.Error = fmt.Errorf("could not tokenize input: %s", err)
|
||||
}
|
||||
}
|
||||
|
||||
// Get returns the value for key in BufferSettings or DefaultSettings if key does not exist in the former
|
||||
func (d *Document) Get(key string) string {
|
||||
if v, ok := d.BufferSettings[key]; ok {
|
||||
return v
|
||||
}
|
||||
if v, ok := d.DefaultSettings[key]; ok {
|
||||
return v
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
// GetOption returns the value associated to the export option key
|
||||
// Currently supported options:
|
||||
// - < (export timestamps)
|
||||
// - e (export org entities)
|
||||
// - f (export footnotes)
|
||||
// - toc (export table of content)
|
||||
// - todo (export headline todo status)
|
||||
// - pri (export headline priority)
|
||||
// - tags (export headline tags)
|
||||
// see https://orgmode.org/manual/Export-settings.html for more information
|
||||
func (d *Document) GetOption(key string) bool {
|
||||
get := func(settings map[string]string) string {
|
||||
for _, field := range strings.Fields(settings["OPTIONS"]) {
|
||||
if strings.HasPrefix(field, key+":") {
|
||||
return field[len(key)+1:]
|
||||
}
|
||||
}
|
||||
return ""
|
||||
}
|
||||
value := get(d.BufferSettings)
|
||||
if value == "" {
|
||||
value = get(d.DefaultSettings)
|
||||
}
|
||||
switch value {
|
||||
case "t":
|
||||
return true
|
||||
case "nil":
|
||||
return false
|
||||
default:
|
||||
d.Log.Printf("Bad value for export option %s (%s)", key, value)
|
||||
return false
|
||||
}
|
||||
}
|
||||
|
||||
func (d *Document) parseOne(i int, stop stopFn) (consumed int, node Node) {
|
||||
switch d.tokens[i].kind {
|
||||
case "unorderedList", "orderedList":
|
||||
consumed, node = d.parseList(i, stop)
|
||||
case "tableRow", "tableSeparator":
|
||||
consumed, node = d.parseTable(i, stop)
|
||||
case "beginBlock":
|
||||
consumed, node = d.parseBlock(i, stop)
|
||||
case "beginDrawer":
|
||||
consumed, node = d.parseDrawer(i, stop)
|
||||
case "text":
|
||||
consumed, node = d.parseParagraph(i, stop)
|
||||
case "example":
|
||||
consumed, node = d.parseExample(i, stop)
|
||||
case "horizontalRule":
|
||||
consumed, node = d.parseHorizontalRule(i, stop)
|
||||
case "comment":
|
||||
consumed, node = d.parseComment(i, stop)
|
||||
case "keyword":
|
||||
consumed, node = d.parseKeyword(i, stop)
|
||||
case "headline":
|
||||
consumed, node = d.parseHeadline(i, stop)
|
||||
case "footnoteDefinition":
|
||||
consumed, node = d.parseFootnoteDefinition(i, stop)
|
||||
}
|
||||
|
||||
if consumed != 0 {
|
||||
return consumed, node
|
||||
}
|
||||
d.Log.Printf("Could not parse token %#v: Falling back to treating it as plain text.", d.tokens[i])
|
||||
m := plainTextRegexp.FindStringSubmatch(d.tokens[i].matches[0])
|
||||
d.tokens[i] = token{"text", len(m[1]), m[2], m}
|
||||
return d.parseOne(i, stop)
|
||||
}
|
||||
|
||||
func (d *Document) parseMany(i int, stop stopFn) (int, []Node) {
|
||||
start, nodes := i, []Node{}
|
||||
for i < len(d.tokens) && !stop(d, i) {
|
||||
consumed, node := d.parseOne(i, stop)
|
||||
i += consumed
|
||||
nodes = append(nodes, node)
|
||||
}
|
||||
return i - start, nodes
|
||||
}
|
||||
|
||||
func (d *Document) addHeadline(headline *Headline) int {
|
||||
current := &Section{Headline: headline}
|
||||
d.Outline.last.add(current)
|
||||
d.Outline.count++
|
||||
d.Outline.last = current
|
||||
return d.Outline.count
|
||||
}
|
||||
|
||||
func tokenize(line string) token {
|
||||
for _, lexFn := range lexFns {
|
||||
if token, ok := lexFn(line); ok {
|
||||
return token
|
||||
}
|
||||
}
|
||||
panic(fmt.Sprintf("could not lex line: %s", line))
|
||||
}
|
||||
@ -0,0 +1,97 @@
|
||||
package org
|
||||
|
||||
import (
|
||||
"regexp"
|
||||
"strings"
|
||||
)
|
||||
|
||||
type Drawer struct {
|
||||
Name string
|
||||
Children []Node
|
||||
}
|
||||
|
||||
type PropertyDrawer struct {
|
||||
Properties [][]string
|
||||
}
|
||||
|
||||
var beginDrawerRegexp = regexp.MustCompile(`^(\s*):(\S+):\s*$`)
|
||||
var endDrawerRegexp = regexp.MustCompile(`^(\s*):END:\s*$`)
|
||||
var propertyRegexp = regexp.MustCompile(`^(\s*):(\S+):(\s+(.*)$|$)`)
|
||||
|
||||
func lexDrawer(line string) (token, bool) {
|
||||
if m := endDrawerRegexp.FindStringSubmatch(line); m != nil {
|
||||
return token{"endDrawer", len(m[1]), "", m}, true
|
||||
} else if m := beginDrawerRegexp.FindStringSubmatch(line); m != nil {
|
||||
return token{"beginDrawer", len(m[1]), strings.ToUpper(m[2]), m}, true
|
||||
}
|
||||
return nilToken, false
|
||||
}
|
||||
|
||||
func (d *Document) parseDrawer(i int, parentStop stopFn) (int, Node) {
|
||||
name := strings.ToUpper(d.tokens[i].content)
|
||||
if name == "PROPERTIES" {
|
||||
return d.parsePropertyDrawer(i, parentStop)
|
||||
}
|
||||
drawer, start := Drawer{Name: name}, i
|
||||
i++
|
||||
stop := func(d *Document, i int) bool {
|
||||
if parentStop(d, i) {
|
||||
return true
|
||||
}
|
||||
kind := d.tokens[i].kind
|
||||
return kind == "beginDrawer" || kind == "endDrawer" || kind == "headline"
|
||||
}
|
||||
for {
|
||||
consumed, nodes := d.parseMany(i, stop)
|
||||
i += consumed
|
||||
drawer.Children = append(drawer.Children, nodes...)
|
||||
if i < len(d.tokens) && d.tokens[i].kind == "beginDrawer" {
|
||||
p := Paragraph{[]Node{Text{":" + d.tokens[i].content + ":", false}}}
|
||||
drawer.Children = append(drawer.Children, p)
|
||||
i++
|
||||
} else {
|
||||
break
|
||||
}
|
||||
}
|
||||
if i < len(d.tokens) && d.tokens[i].kind == "endDrawer" {
|
||||
i++
|
||||
}
|
||||
return i - start, drawer
|
||||
}
|
||||
|
||||
func (d *Document) parsePropertyDrawer(i int, parentStop stopFn) (int, Node) {
|
||||
drawer, start := PropertyDrawer{}, i
|
||||
i++
|
||||
stop := func(d *Document, i int) bool {
|
||||
return parentStop(d, i) || (d.tokens[i].kind != "text" && d.tokens[i].kind != "beginDrawer")
|
||||
}
|
||||
for ; !stop(d, i); i++ {
|
||||
m := propertyRegexp.FindStringSubmatch(d.tokens[i].matches[0])
|
||||
if m == nil {
|
||||
return 0, nil
|
||||
}
|
||||
k, v := strings.ToUpper(m[2]), strings.TrimSpace(m[4])
|
||||
drawer.Properties = append(drawer.Properties, []string{k, v})
|
||||
}
|
||||
if i < len(d.tokens) && d.tokens[i].kind == "endDrawer" {
|
||||
i++
|
||||
} else {
|
||||
return 0, nil
|
||||
}
|
||||
return i - start, drawer
|
||||
}
|
||||
|
||||
func (d *PropertyDrawer) Get(key string) (string, bool) {
|
||||
if d == nil {
|
||||
return "", false
|
||||
}
|
||||
for _, kvPair := range d.Properties {
|
||||
if kvPair[0] == key {
|
||||
return kvPair[1], true
|
||||
}
|
||||
}
|
||||
return "", false
|
||||
}
|
||||
|
||||
func (n Drawer) String() string { return orgWriter.nodesAsString(n) }
|
||||
func (n PropertyDrawer) String() string { return orgWriter.nodesAsString(n) }
|
||||
@ -0,0 +1,35 @@
|
||||
package org
|
||||
|
||||
import (
|
||||
"regexp"
|
||||
)
|
||||
|
||||
type FootnoteDefinition struct {
|
||||
Name string
|
||||
Children []Node
|
||||
Inline bool
|
||||
}
|
||||
|
||||
var footnoteDefinitionRegexp = regexp.MustCompile(`^\[fn:([\w-]+)\](\s+(.+)|\s*$)`)
|
||||
|
||||
func lexFootnoteDefinition(line string) (token, bool) {
|
||||
if m := footnoteDefinitionRegexp.FindStringSubmatch(line); m != nil {
|
||||
return token{"footnoteDefinition", 0, m[1], m}, true
|
||||
}
|
||||
return nilToken, false
|
||||
}
|
||||
|
||||
func (d *Document) parseFootnoteDefinition(i int, parentStop stopFn) (int, Node) {
|
||||
start, name := i, d.tokens[i].content
|
||||
d.tokens[i] = tokenize(d.tokens[i].matches[2])
|
||||
stop := func(d *Document, i int) bool {
|
||||
return parentStop(d, i) ||
|
||||
(isSecondBlankLine(d, i) && i > start+1) ||
|
||||
d.tokens[i].kind == "headline" || d.tokens[i].kind == "footnoteDefinition"
|
||||
}
|
||||
consumed, nodes := d.parseMany(i, stop)
|
||||
definition := FootnoteDefinition{name, nodes, false}
|
||||
return consumed, definition
|
||||
}
|
||||
|
||||
func (n FootnoteDefinition) String() string { return orgWriter.nodesAsString(n) }
|
||||
@ -0,0 +1,27 @@
|
||||
// +build gofuzz
|
||||
|
||||
package org
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// Fuzz function to be used by https://github.com/dvyukov/go-fuzz
|
||||
func Fuzz(input []byte) int {
|
||||
conf := New().Silent()
|
||||
d := conf.Parse(bytes.NewReader(input), "")
|
||||
orgOutput, err := d.Write(NewOrgWriter())
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
htmlOutputA, err := d.Write(NewHTMLWriter())
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
htmlOutputB, err := conf.Parse(strings.NewReader(orgOutput), "").Write(NewHTMLWriter())
|
||||
if htmlOutputA != htmlOutputB {
|
||||
panic("rendered org results in different html than original input")
|
||||
}
|
||||
return 0
|
||||
}
|
||||
@ -0,0 +1,101 @@
|
||||
package org
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"regexp"
|
||||
"strings"
|
||||
"unicode"
|
||||
)
|
||||
|
||||
type Outline struct {
|
||||
*Section
|
||||
last *Section
|
||||
count int
|
||||
}
|
||||
|
||||
type Section struct {
|
||||
Headline *Headline
|
||||
Parent *Section
|
||||
Children []*Section
|
||||
}
|
||||
|
||||
type Headline struct {
|
||||
Index int
|
||||
Lvl int
|
||||
Status string
|
||||
Priority string
|
||||
Properties *PropertyDrawer
|
||||
Title []Node
|
||||
Tags []string
|
||||
Children []Node
|
||||
}
|
||||
|
||||
var headlineRegexp = regexp.MustCompile(`^([*]+)\s+(.*)`)
|
||||
var tagRegexp = regexp.MustCompile(`(.*?)\s+(:[A-Za-z0-9_@#%:]+:\s*$)`)
|
||||
|
||||
func lexHeadline(line string) (token, bool) {
|
||||
if m := headlineRegexp.FindStringSubmatch(line); m != nil {
|
||||
return token{"headline", len(m[1]), m[2], m}, true
|
||||
}
|
||||
return nilToken, false
|
||||
}
|
||||
|
||||
func (d *Document) parseHeadline(i int, parentStop stopFn) (int, Node) {
|
||||
t, headline := d.tokens[i], Headline{}
|
||||
headline.Lvl = t.lvl
|
||||
|
||||
headline.Index = d.addHeadline(&headline)
|
||||
|
||||
text := t.content
|
||||
todoKeywords := strings.FieldsFunc(d.Get("TODO"), func(r rune) bool { return unicode.IsSpace(r) || r == '|' })
|
||||
for _, k := range todoKeywords {
|
||||
if strings.HasPrefix(text, k) && len(text) > len(k) && unicode.IsSpace(rune(text[len(k)])) {
|
||||
headline.Status = k
|
||||
text = text[len(k)+1:]
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
if len(text) >= 4 && text[0:2] == "[#" && strings.Contains("ABC", text[2:3]) && text[3] == ']' {
|
||||
headline.Priority = text[2:3]
|
||||
text = strings.TrimSpace(text[4:])
|
||||
}
|
||||
|
||||
if m := tagRegexp.FindStringSubmatch(text); m != nil {
|
||||
text = m[1]
|
||||
headline.Tags = strings.FieldsFunc(m[2], func(r rune) bool { return r == ':' })
|
||||
}
|
||||
|
||||
headline.Title = d.parseInline(text)
|
||||
|
||||
stop := func(d *Document, i int) bool {
|
||||
return parentStop(d, i) || d.tokens[i].kind == "headline" && d.tokens[i].lvl <= headline.Lvl
|
||||
}
|
||||
consumed, nodes := d.parseMany(i+1, stop)
|
||||
if len(nodes) > 0 {
|
||||
if d, ok := nodes[0].(PropertyDrawer); ok {
|
||||
headline.Properties = &d
|
||||
nodes = nodes[1:]
|
||||
}
|
||||
}
|
||||
headline.Children = nodes
|
||||
return consumed + 1, headline
|
||||
}
|
||||
|
||||
func (h Headline) ID() string {
|
||||
if customID, ok := h.Properties.Get("CUSTOM_ID"); ok {
|
||||
return customID
|
||||
}
|
||||
return fmt.Sprintf("headline-%d", h.Index)
|
||||
}
|
||||
|
||||
func (parent *Section) add(current *Section) {
|
||||
if parent.Headline == nil || parent.Headline.Lvl < current.Headline.Lvl {
|
||||
parent.Children = append(parent.Children, current)
|
||||
current.Parent = parent
|
||||
} else {
|
||||
parent.Parent.add(current)
|
||||
}
|
||||
}
|
||||
|
||||
func (n Headline) String() string { return orgWriter.nodesAsString(n) }
|
||||
@ -0,0 +1,504 @@
|
||||
package org
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"html"
|
||||
"log"
|
||||
"regexp"
|
||||
"strings"
|
||||
"unicode"
|
||||
|
||||
h "golang.org/x/net/html"
|
||||
"golang.org/x/net/html/atom"
|
||||
)
|
||||
|
||||
// HTMLWriter exports an org document into a html document.
|
||||
type HTMLWriter struct {
|
||||
ExtendingWriter Writer
|
||||
HighlightCodeBlock func(source, lang string) string
|
||||
|
||||
strings.Builder
|
||||
document *Document
|
||||
htmlEscape bool
|
||||
log *log.Logger
|
||||
footnotes *footnotes
|
||||
}
|
||||
|
||||
type footnotes struct {
|
||||
mapping map[string]int
|
||||
list []*FootnoteDefinition
|
||||
}
|
||||
|
||||
var emphasisTags = map[string][]string{
|
||||
"/": []string{"<em>", "</em>"},
|
||||
"*": []string{"<strong>", "</strong>"},
|
||||
"+": []string{"<del>", "</del>"},
|
||||
"~": []string{"<code>", "</code>"},
|
||||
"=": []string{`<code class="verbatim">`, "</code>"},
|
||||
"_": []string{`<span style="text-decoration: underline;">`, "</span>"},
|
||||
"_{}": []string{"<sub>", "</sub>"},
|
||||
"^{}": []string{"<sup>", "</sup>"},
|
||||
}
|
||||
|
||||
var listTags = map[string][]string{
|
||||
"unordered": []string{"<ul>", "</ul>"},
|
||||
"ordered": []string{"<ol>", "</ol>"},
|
||||
"descriptive": []string{"<dl>", "</dl>"},
|
||||
}
|
||||
|
||||
var listItemStatuses = map[string]string{
|
||||
" ": "unchecked",
|
||||
"-": "indeterminate",
|
||||
"X": "checked",
|
||||
}
|
||||
|
||||
var cleanHeadlineTitleForHTMLAnchorRegexp = regexp.MustCompile(`</?a[^>]*>`) // nested a tags are not valid HTML
|
||||
|
||||
func NewHTMLWriter() *HTMLWriter {
|
||||
defaultConfig := New()
|
||||
return &HTMLWriter{
|
||||
document: &Document{Configuration: defaultConfig},
|
||||
log: defaultConfig.Log,
|
||||
htmlEscape: true,
|
||||
HighlightCodeBlock: func(source, lang string) string {
|
||||
return fmt.Sprintf("<div class=\"highlight\">\n<pre>\n%s\n</pre>\n</div>", html.EscapeString(source))
|
||||
},
|
||||
footnotes: &footnotes{
|
||||
mapping: map[string]int{},
|
||||
},
|
||||
}
|
||||
}
|
||||
|
||||
func (w *HTMLWriter) emptyClone() *HTMLWriter {
|
||||
wcopy := *w
|
||||
wcopy.Builder = strings.Builder{}
|
||||
return &wcopy
|
||||
}
|
||||
|
||||
func (w *HTMLWriter) nodesAsString(nodes ...Node) string {
|
||||
tmp := w.emptyClone()
|
||||
WriteNodes(tmp, nodes...)
|
||||
return tmp.String()
|
||||
}
|
||||
|
||||
func (w *HTMLWriter) WriterWithExtensions() Writer {
|
||||
if w.ExtendingWriter != nil {
|
||||
return w.ExtendingWriter
|
||||
}
|
||||
return w
|
||||
}
|
||||
|
||||
func (w *HTMLWriter) Before(d *Document) {
|
||||
w.document = d
|
||||
w.log = d.Log
|
||||
w.WriteOutline(d)
|
||||
}
|
||||
|
||||
func (w *HTMLWriter) After(d *Document) {
|
||||
w.WriteFootnotes(d)
|
||||
}
|
||||
|
||||
func (w *HTMLWriter) WriteComment(Comment) {}
|
||||
func (w *HTMLWriter) WritePropertyDrawer(PropertyDrawer) {}
|
||||
|
||||
func (w *HTMLWriter) WriteBlock(b Block) {
|
||||
content := ""
|
||||
if isRawTextBlock(b.Name) {
|
||||
exportWriter := w.emptyClone()
|
||||
exportWriter.htmlEscape = false
|
||||
WriteNodes(exportWriter, b.Children...)
|
||||
content = strings.TrimRightFunc(exportWriter.String(), unicode.IsSpace)
|
||||
} else {
|
||||
content = w.nodesAsString(b.Children...)
|
||||
}
|
||||
switch name := b.Name; {
|
||||
case name == "SRC":
|
||||
lang := "text"
|
||||
if len(b.Parameters) >= 1 {
|
||||
lang = strings.ToLower(b.Parameters[0])
|
||||
}
|
||||
content = w.HighlightCodeBlock(content, lang)
|
||||
w.WriteString(fmt.Sprintf("<div class=\"src src-%s\">\n%s\n</div>\n", lang, content))
|
||||
case name == "EXAMPLE":
|
||||
w.WriteString(`<pre class="example">` + "\n" + content + "\n</pre>\n")
|
||||
case name == "EXPORT" && len(b.Parameters) >= 1 && strings.ToLower(b.Parameters[0]) == "html":
|
||||
w.WriteString(content + "\n")
|
||||
case name == "QUOTE":
|
||||
w.WriteString("<blockquote>\n" + content + "</blockquote>\n")
|
||||
case name == "CENTER":
|
||||
w.WriteString(`<div class="center-block" style="text-align: center; margin-left: auto; margin-right: auto;">` + "\n")
|
||||
w.WriteString(content + "</div>\n")
|
||||
default:
|
||||
w.WriteString(fmt.Sprintf(`<div class="%s-block">`, strings.ToLower(b.Name)) + "\n")
|
||||
w.WriteString(content + "</div>\n")
|
||||
}
|
||||
}
|
||||
|
||||
func (w *HTMLWriter) WriteDrawer(d Drawer) {
|
||||
WriteNodes(w, d.Children...)
|
||||
}
|
||||
|
||||
func (w *HTMLWriter) WriteKeyword(k Keyword) {
|
||||
if k.Key == "HTML" {
|
||||
w.WriteString(k.Value + "\n")
|
||||
}
|
||||
}
|
||||
|
||||
func (w *HTMLWriter) WriteInclude(i Include) {
|
||||
WriteNodes(w, i.Resolve())
|
||||
}
|
||||
|
||||
func (w *HTMLWriter) WriteFootnoteDefinition(f FootnoteDefinition) {
|
||||
w.footnotes.updateDefinition(f)
|
||||
}
|
||||
|
||||
func (w *HTMLWriter) WriteFootnotes(d *Document) {
|
||||
if !w.document.GetOption("f") || len(w.footnotes.list) == 0 {
|
||||
return
|
||||
}
|
||||
w.WriteString(`<div class="footnotes">` + "\n")
|
||||
w.WriteString(`<hr class="footnotes-separatator">` + "\n")
|
||||
w.WriteString(`<div class="footnote-definitions">` + "\n")
|
||||
for i, definition := range w.footnotes.list {
|
||||
id := i + 1
|
||||
if definition == nil {
|
||||
name := ""
|
||||
for k, v := range w.footnotes.mapping {
|
||||
if v == i {
|
||||
name = k
|
||||
}
|
||||
}
|
||||
w.log.Printf("Missing footnote definition for [fn:%s] (#%d)", name, id)
|
||||
continue
|
||||
}
|
||||
w.WriteString(`<div class="footnote-definition">` + "\n")
|
||||
w.WriteString(fmt.Sprintf(`<sup id="footnote-%d"><a href="#footnote-reference-%d">%d</a></sup>`, id, id, id) + "\n")
|
||||
w.WriteString(`<div class="footnote-body">` + "\n")
|
||||
WriteNodes(w, definition.Children...)
|
||||
w.WriteString("</div>\n</div>\n")
|
||||
}
|
||||
w.WriteString("</div>\n</div>\n")
|
||||
}
|
||||
|
||||
func (w *HTMLWriter) WriteOutline(d *Document) {
|
||||
if w.document.GetOption("toc") && len(d.Outline.Children) != 0 {
|
||||
w.WriteString("<nav>\n<ul>\n")
|
||||
for _, section := range d.Outline.Children {
|
||||
w.writeSection(section)
|
||||
}
|
||||
w.WriteString("</ul>\n</nav>\n")
|
||||
}
|
||||
}
|
||||
|
||||
func (w *HTMLWriter) writeSection(section *Section) {
|
||||
// NOTE: To satisfy hugo ExtractTOC() check we cannot use `<li>\n` here. Doesn't really matter, just a note.
|
||||
w.WriteString("<li>")
|
||||
h := section.Headline
|
||||
title := cleanHeadlineTitleForHTMLAnchorRegexp.ReplaceAllString(w.nodesAsString(h.Title...), "")
|
||||
w.WriteString(fmt.Sprintf("<a href=\"#%s\">%s</a>\n", h.ID(), title))
|
||||
if len(section.Children) != 0 {
|
||||
w.WriteString("<ul>\n")
|
||||
for _, section := range section.Children {
|
||||
w.writeSection(section)
|
||||
}
|
||||
w.WriteString("</ul>\n")
|
||||
}
|
||||
w.WriteString("</li>\n")
|
||||
}
|
||||
|
||||
func (w *HTMLWriter) WriteHeadline(h Headline) {
|
||||
for _, excludeTag := range strings.Fields(w.document.Get("EXCLUDE_TAGS")) {
|
||||
for _, tag := range h.Tags {
|
||||
if excludeTag == tag {
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
w.WriteString(fmt.Sprintf(`<h%d id="%s">`, h.Lvl, h.ID()) + "\n")
|
||||
if w.document.GetOption("todo") && h.Status != "" {
|
||||
w.WriteString(fmt.Sprintf(`<span class="todo">%s</span>`, h.Status) + "\n")
|
||||
}
|
||||
if w.document.GetOption("pri") && h.Priority != "" {
|
||||
w.WriteString(fmt.Sprintf(`<span class="priority">[%s]</span>`, h.Priority) + "\n")
|
||||
}
|
||||
|
||||
WriteNodes(w, h.Title...)
|
||||
if w.document.GetOption("tags") && len(h.Tags) != 0 {
|
||||
tags := make([]string, len(h.Tags))
|
||||
for i, tag := range h.Tags {
|
||||
tags[i] = fmt.Sprintf(`<span>%s</span>`, tag)
|
||||
}
|
||||
w.WriteString("   ")
|
||||
w.WriteString(fmt.Sprintf(`<span class="tags">%s</span>`, strings.Join(tags, " ")))
|
||||
}
|
||||
w.WriteString(fmt.Sprintf("\n</h%d>\n", h.Lvl))
|
||||
WriteNodes(w, h.Children...)
|
||||
}
|
||||
|
||||
func (w *HTMLWriter) WriteText(t Text) {
|
||||
if !w.htmlEscape {
|
||||
w.WriteString(t.Content)
|
||||
} else if !w.document.GetOption("e") || t.IsRaw {
|
||||
w.WriteString(html.EscapeString(t.Content))
|
||||
} else {
|
||||
w.WriteString(html.EscapeString(htmlEntityReplacer.Replace(t.Content)))
|
||||
}
|
||||
}
|
||||
|
||||
func (w *HTMLWriter) WriteEmphasis(e Emphasis) {
|
||||
tags, ok := emphasisTags[e.Kind]
|
||||
if !ok {
|
||||
panic(fmt.Sprintf("bad emphasis %#v", e))
|
||||
}
|
||||
w.WriteString(tags[0])
|
||||
WriteNodes(w, e.Content...)
|
||||
w.WriteString(tags[1])
|
||||
}
|
||||
|
||||
func (w *HTMLWriter) WriteLatexFragment(l LatexFragment) {
|
||||
w.WriteString(l.OpeningPair)
|
||||
WriteNodes(w, l.Content...)
|
||||
w.WriteString(l.ClosingPair)
|
||||
}
|
||||
|
||||
func (w *HTMLWriter) WriteStatisticToken(s StatisticToken) {
|
||||
w.WriteString(fmt.Sprintf(`<code class="statistic">[%s]</code>`, s.Content))
|
||||
}
|
||||
|
||||
func (w *HTMLWriter) WriteLineBreak(l LineBreak) {
|
||||
w.WriteString(strings.Repeat("\n", l.Count))
|
||||
}
|
||||
|
||||
func (w *HTMLWriter) WriteExplicitLineBreak(l ExplicitLineBreak) {
|
||||
w.WriteString("<br>\n")
|
||||
}
|
||||
|
||||
func (w *HTMLWriter) WriteFootnoteLink(l FootnoteLink) {
|
||||
if !w.document.GetOption("f") {
|
||||
return
|
||||
}
|
||||
i := w.footnotes.add(l)
|
||||
id := i + 1
|
||||
w.WriteString(fmt.Sprintf(`<sup class="footnote-reference"><a id="footnote-reference-%d" href="#footnote-%d">%d</a></sup>`, id, id, id))
|
||||
}
|
||||
|
||||
func (w *HTMLWriter) WriteTimestamp(t Timestamp) {
|
||||
if !w.document.GetOption("<") {
|
||||
return
|
||||
}
|
||||
w.WriteString(`<span class="timestamp"><`)
|
||||
if t.IsDate {
|
||||
w.WriteString(t.Time.Format(datestampFormat))
|
||||
} else {
|
||||
w.WriteString(t.Time.Format(timestampFormat))
|
||||
}
|
||||
if t.Interval != "" {
|
||||
w.WriteString(" " + t.Interval)
|
||||
}
|
||||
w.WriteString(`></span>`)
|
||||
}
|
||||
|
||||
func (w *HTMLWriter) WriteRegularLink(l RegularLink) {
|
||||
url := html.EscapeString(l.URL)
|
||||
if l.Protocol == "file" {
|
||||
url = url[len("file:"):]
|
||||
}
|
||||
description := url
|
||||
if l.Description != nil {
|
||||
description = w.nodesAsString(l.Description...)
|
||||
}
|
||||
switch l.Kind() {
|
||||
case "image":
|
||||
w.WriteString(fmt.Sprintf(`<img src="%s" alt="%s" title="%s" />`, url, description, description))
|
||||
case "video":
|
||||
w.WriteString(fmt.Sprintf(`<video src="%s" title="%s">%s</video>`, url, description, description))
|
||||
default:
|
||||
w.WriteString(fmt.Sprintf(`<a href="%s">%s</a>`, url, description))
|
||||
}
|
||||
}
|
||||
|
||||
func (w *HTMLWriter) WriteList(l List) {
|
||||
tags, ok := listTags[l.Kind]
|
||||
if !ok {
|
||||
panic(fmt.Sprintf("bad list kind %#v", l))
|
||||
}
|
||||
w.WriteString(tags[0] + "\n")
|
||||
WriteNodes(w, l.Items...)
|
||||
w.WriteString(tags[1] + "\n")
|
||||
}
|
||||
|
||||
func (w *HTMLWriter) WriteListItem(li ListItem) {
|
||||
if li.Status != "" {
|
||||
w.WriteString(fmt.Sprintf("<li class=\"%s\">\n", listItemStatuses[li.Status]))
|
||||
} else {
|
||||
w.WriteString("<li>\n")
|
||||
}
|
||||
WriteNodes(w, li.Children...)
|
||||
w.WriteString("</li>\n")
|
||||
}
|
||||
|
||||
func (w *HTMLWriter) WriteDescriptiveListItem(di DescriptiveListItem) {
|
||||
if di.Status != "" {
|
||||
w.WriteString(fmt.Sprintf("<dt class=\"%s\">\n", listItemStatuses[di.Status]))
|
||||
} else {
|
||||
w.WriteString("<dt>\n")
|
||||
}
|
||||
|
||||
if len(di.Term) != 0 {
|
||||
WriteNodes(w, di.Term...)
|
||||
} else {
|
||||
w.WriteString("?")
|
||||
}
|
||||
w.WriteString("\n</dt>\n")
|
||||
w.WriteString("<dd>\n")
|
||||
WriteNodes(w, di.Details...)
|
||||
w.WriteString("</dd>\n")
|
||||
}
|
||||
|
||||
func (w *HTMLWriter) WriteParagraph(p Paragraph) {
|
||||
if len(p.Children) == 0 {
|
||||
return
|
||||
}
|
||||
w.WriteString("<p>")
|
||||
if _, ok := p.Children[0].(LineBreak); !ok {
|
||||
w.WriteString("\n")
|
||||
}
|
||||
WriteNodes(w, p.Children...)
|
||||
w.WriteString("\n</p>\n")
|
||||
}
|
||||
|
||||
func (w *HTMLWriter) WriteExample(e Example) {
|
||||
w.WriteString(`<pre class="example">` + "\n")
|
||||
if len(e.Children) != 0 {
|
||||
for _, n := range e.Children {
|
||||
WriteNodes(w, n)
|
||||
w.WriteString("\n")
|
||||
}
|
||||
}
|
||||
w.WriteString("</pre>\n")
|
||||
}
|
||||
|
||||
func (w *HTMLWriter) WriteHorizontalRule(h HorizontalRule) {
|
||||
w.WriteString("<hr>\n")
|
||||
}
|
||||
|
||||
func (w *HTMLWriter) WriteNodeWithMeta(n NodeWithMeta) {
|
||||
out := w.nodesAsString(n.Node)
|
||||
if p, ok := n.Node.(Paragraph); ok {
|
||||
if len(p.Children) == 1 && isImageOrVideoLink(p.Children[0]) {
|
||||
out = w.nodesAsString(p.Children[0])
|
||||
}
|
||||
}
|
||||
for _, attributes := range n.Meta.HTMLAttributes {
|
||||
out = w.withHTMLAttributes(out, attributes...) + "\n"
|
||||
}
|
||||
if len(n.Meta.Caption) != 0 {
|
||||
caption := ""
|
||||
for i, ns := range n.Meta.Caption {
|
||||
if i != 0 {
|
||||
caption += " "
|
||||
}
|
||||
caption += w.nodesAsString(ns...)
|
||||
}
|
||||
out = fmt.Sprintf("<figure>\n%s<figcaption>\n%s\n</figcaption>\n</figure>\n", out, caption)
|
||||
}
|
||||
w.WriteString(out)
|
||||
}
|
||||
|
||||
func (w *HTMLWriter) WriteNodeWithName(n NodeWithName) {
|
||||
WriteNodes(w, n.Node)
|
||||
}
|
||||
|
||||
func (w *HTMLWriter) WriteTable(t Table) {
|
||||
w.WriteString("<table>\n")
|
||||
beforeFirstContentRow := true
|
||||
for i, row := range t.Rows {
|
||||
if row.IsSpecial || len(row.Columns) == 0 {
|
||||
continue
|
||||
}
|
||||
if beforeFirstContentRow {
|
||||
beforeFirstContentRow = false
|
||||
if i+1 < len(t.Rows) && len(t.Rows[i+1].Columns) == 0 {
|
||||
w.WriteString("<thead>\n")
|
||||
w.writeTableColumns(row.Columns, "th")
|
||||
w.WriteString("</thead>\n<tbody>\n")
|
||||
continue
|
||||
} else {
|
||||
w.WriteString("<tbody>\n")
|
||||
}
|
||||
}
|
||||
w.writeTableColumns(row.Columns, "td")
|
||||
}
|
||||
w.WriteString("</tbody>\n</table>\n")
|
||||
}
|
||||
|
||||
func (w *HTMLWriter) writeTableColumns(columns []Column, tag string) {
|
||||
w.WriteString("<tr>\n")
|
||||
for _, column := range columns {
|
||||
if column.Align == "" {
|
||||
w.WriteString(fmt.Sprintf("<%s>", tag))
|
||||
} else {
|
||||
w.WriteString(fmt.Sprintf(`<%s class="align-%s">`, tag, column.Align))
|
||||
}
|
||||
WriteNodes(w, column.Children...)
|
||||
w.WriteString(fmt.Sprintf("</%s>\n", tag))
|
||||
}
|
||||
w.WriteString("</tr>\n")
|
||||
}
|
||||
|
||||
func (w *HTMLWriter) withHTMLAttributes(input string, kvs ...string) string {
|
||||
if len(kvs)%2 != 0 {
|
||||
w.log.Printf("withHTMLAttributes: Len of kvs must be even: %#v", kvs)
|
||||
return input
|
||||
}
|
||||
context := &h.Node{Type: h.ElementNode, Data: "body", DataAtom: atom.Body}
|
||||
nodes, err := h.ParseFragment(strings.NewReader(strings.TrimSpace(input)), context)
|
||||
if err != nil || len(nodes) != 1 {
|
||||
w.log.Printf("withHTMLAttributes: Could not extend attributes of %s: %v (%s)", input, nodes, err)
|
||||
return input
|
||||
}
|
||||
out, node := strings.Builder{}, nodes[0]
|
||||
for i := 0; i < len(kvs)-1; i += 2 {
|
||||
node.Attr = setHTMLAttribute(node.Attr, strings.TrimPrefix(kvs[i], ":"), kvs[i+1])
|
||||
}
|
||||
err = h.Render(&out, nodes[0])
|
||||
if err != nil {
|
||||
w.log.Printf("withHTMLAttributes: Could not extend attributes of %s: %v (%s)", input, node, err)
|
||||
return input
|
||||
}
|
||||
return out.String()
|
||||
}
|
||||
|
||||
func setHTMLAttribute(attributes []h.Attribute, k, v string) []h.Attribute {
|
||||
for i, a := range attributes {
|
||||
if strings.ToLower(a.Key) == strings.ToLower(k) {
|
||||
switch strings.ToLower(k) {
|
||||
case "class", "style":
|
||||
attributes[i].Val += " " + v
|
||||
default:
|
||||
attributes[i].Val = v
|
||||
}
|
||||
return attributes
|
||||
}
|
||||
}
|
||||
return append(attributes, h.Attribute{Namespace: "", Key: k, Val: v})
|
||||
}
|
||||
|
||||
func (fs *footnotes) add(f FootnoteLink) int {
|
||||
if i, ok := fs.mapping[f.Name]; ok && f.Name != "" {
|
||||
return i
|
||||
}
|
||||
fs.list = append(fs.list, f.Definition)
|
||||
i := len(fs.list) - 1
|
||||
if f.Name != "" {
|
||||
fs.mapping[f.Name] = i
|
||||
}
|
||||
return i
|
||||
}
|
||||
|
||||
func (fs *footnotes) updateDefinition(f FootnoteDefinition) {
|
||||
if i, ok := fs.mapping[f.Name]; ok {
|
||||
fs.list[i] = &f
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,357 @@
|
||||
package org
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"path"
|
||||
"regexp"
|
||||
"strings"
|
||||
"time"
|
||||
"unicode"
|
||||
)
|
||||
|
||||
type Text struct {
|
||||
Content string
|
||||
IsRaw bool
|
||||
}
|
||||
|
||||
type LineBreak struct{ Count int }
|
||||
type ExplicitLineBreak struct{}
|
||||
|
||||
type StatisticToken struct{ Content string }
|
||||
|
||||
type Timestamp struct {
|
||||
Time time.Time
|
||||
IsDate bool
|
||||
Interval string
|
||||
}
|
||||
|
||||
type Emphasis struct {
|
||||
Kind string
|
||||
Content []Node
|
||||
}
|
||||
|
||||
type LatexFragment struct {
|
||||
OpeningPair string
|
||||
ClosingPair string
|
||||
Content []Node
|
||||
}
|
||||
|
||||
type FootnoteLink struct {
|
||||
Name string
|
||||
Definition *FootnoteDefinition
|
||||
}
|
||||
|
||||
type RegularLink struct {
|
||||
Protocol string
|
||||
Description []Node
|
||||
URL string
|
||||
AutoLink bool
|
||||
}
|
||||
|
||||
var validURLCharacters = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~:/?#[]@!$&'()*+,;="
|
||||
var autolinkProtocols = regexp.MustCompile(`^(https?|ftp|file)$`)
|
||||
var imageExtensionRegexp = regexp.MustCompile(`^[.](png|gif|jpe?g|svg|tiff?)$`)
|
||||
var videoExtensionRegexp = regexp.MustCompile(`^[.](webm|mp4)$`)
|
||||
|
||||
var subScriptSuperScriptRegexp = regexp.MustCompile(`^([_^]){([^{}]+?)}`)
|
||||
var timestampRegexp = regexp.MustCompile(`^<(\d{4}-\d{2}-\d{2})( [A-Za-z]+)?( \d{2}:\d{2})?( \+\d+[dwmy])?>`)
|
||||
var footnoteRegexp = regexp.MustCompile(`^\[fn:([\w-]*?)(:(.*?))?\]`)
|
||||
var statisticsTokenRegexp = regexp.MustCompile(`^\[(\d+/\d+|\d+%)\]`)
|
||||
var latexFragmentRegexp = regexp.MustCompile(`(?s)^\\begin{(\w+)}(.*)\\end{(\w+)}`)
|
||||
|
||||
var timestampFormat = "2006-01-02 Mon 15:04"
|
||||
var datestampFormat = "2006-01-02 Mon"
|
||||
|
||||
var latexFragmentPairs = map[string]string{
|
||||
`\(`: `\)`,
|
||||
`\[`: `\]`,
|
||||
`$$`: `$$`,
|
||||
}
|
||||
|
||||
func (d *Document) parseInline(input string) (nodes []Node) {
|
||||
previous, current := 0, 0
|
||||
for current < len(input) {
|
||||
rewind, consumed, node := 0, 0, (Node)(nil)
|
||||
switch input[current] {
|
||||
case '^':
|
||||
consumed, node = d.parseSubOrSuperScript(input, current)
|
||||
case '_':
|
||||
consumed, node = d.parseSubScriptOrEmphasis(input, current)
|
||||
case '*', '/', '+':
|
||||
consumed, node = d.parseEmphasis(input, current, false)
|
||||
case '=', '~':
|
||||
consumed, node = d.parseEmphasis(input, current, true)
|
||||
case '[':
|
||||
consumed, node = d.parseOpeningBracket(input, current)
|
||||
case '<':
|
||||
consumed, node = d.parseTimestamp(input, current)
|
||||
case '\\':
|
||||
consumed, node = d.parseExplicitLineBreakOrLatexFragment(input, current)
|
||||
case '$':
|
||||
consumed, node = d.parseLatexFragment(input, current)
|
||||
case '\n':
|
||||
consumed, node = d.parseLineBreak(input, current)
|
||||
case ':':
|
||||
rewind, consumed, node = d.parseAutoLink(input, current)
|
||||
current -= rewind
|
||||
}
|
||||
if consumed != 0 {
|
||||
if current > previous {
|
||||
nodes = append(nodes, Text{input[previous:current], false})
|
||||
}
|
||||
if node != nil {
|
||||
nodes = append(nodes, node)
|
||||
}
|
||||
current += consumed
|
||||
previous = current
|
||||
} else {
|
||||
current++
|
||||
}
|
||||
}
|
||||
|
||||
if previous < len(input) {
|
||||
nodes = append(nodes, Text{input[previous:], false})
|
||||
}
|
||||
return nodes
|
||||
}
|
||||
|
||||
func (d *Document) parseRawInline(input string) (nodes []Node) {
|
||||
previous, current := 0, 0
|
||||
for current < len(input) {
|
||||
if input[current] == '\n' {
|
||||
consumed, node := d.parseLineBreak(input, current)
|
||||
if current > previous {
|
||||
nodes = append(nodes, Text{input[previous:current], true})
|
||||
}
|
||||
nodes = append(nodes, node)
|
||||
current += consumed
|
||||
previous = current
|
||||
} else {
|
||||
current++
|
||||
}
|
||||
}
|
||||
if previous < len(input) {
|
||||
nodes = append(nodes, Text{input[previous:], true})
|
||||
}
|
||||
return nodes
|
||||
}
|
||||
|
||||
func (d *Document) parseLineBreak(input string, start int) (int, Node) {
|
||||
i := start
|
||||
for ; i < len(input) && input[i] == '\n'; i++ {
|
||||
}
|
||||
return i - start, LineBreak{i - start}
|
||||
}
|
||||
|
||||
func (d *Document) parseExplicitLineBreakOrLatexFragment(input string, start int) (int, Node) {
|
||||
switch {
|
||||
case start+2 >= len(input):
|
||||
case input[start+1] == '\\' && start != 0 && input[start-1] != '\n':
|
||||
for i := start + 2; unicode.IsSpace(rune(input[i])); i++ {
|
||||
if i >= len(input) || input[i] == '\n' {
|
||||
return i + 1 - start, ExplicitLineBreak{}
|
||||
}
|
||||
}
|
||||
case input[start+1] == '(' || input[start+1] == '[':
|
||||
return d.parseLatexFragment(input, start)
|
||||
case strings.Index(input[start:], `\begin{`) == 0:
|
||||
if m := latexFragmentRegexp.FindStringSubmatch(input[start:]); m != nil {
|
||||
if open, content, close := m[1], m[2], m[3]; open == close {
|
||||
openingPair, closingPair := `\begin{`+open+`}`, `\end{`+close+`}`
|
||||
i := strings.Index(input[start:], closingPair)
|
||||
return i + len(closingPair), LatexFragment{openingPair, closingPair, d.parseRawInline(content)}
|
||||
}
|
||||
}
|
||||
}
|
||||
return 0, nil
|
||||
}
|
||||
|
||||
func (d *Document) parseLatexFragment(input string, start int) (int, Node) {
|
||||
if start+2 >= len(input) {
|
||||
return 0, nil
|
||||
}
|
||||
openingPair := input[start : start+2]
|
||||
closingPair := latexFragmentPairs[openingPair]
|
||||
if i := strings.Index(input[start+2:], closingPair); i != -1 {
|
||||
content := d.parseRawInline(input[start+2 : start+2+i])
|
||||
return i + 2 + 2, LatexFragment{openingPair, closingPair, content}
|
||||
}
|
||||
return 0, nil
|
||||
}
|
||||
|
||||
func (d *Document) parseSubOrSuperScript(input string, start int) (int, Node) {
|
||||
if m := subScriptSuperScriptRegexp.FindStringSubmatch(input[start:]); m != nil {
|
||||
return len(m[2]) + 3, Emphasis{m[1] + "{}", []Node{Text{m[2], false}}}
|
||||
}
|
||||
return 0, nil
|
||||
}
|
||||
|
||||
func (d *Document) parseSubScriptOrEmphasis(input string, start int) (int, Node) {
|
||||
if consumed, node := d.parseSubOrSuperScript(input, start); consumed != 0 {
|
||||
return consumed, node
|
||||
}
|
||||
return d.parseEmphasis(input, start, false)
|
||||
}
|
||||
|
||||
func (d *Document) parseOpeningBracket(input string, start int) (int, Node) {
|
||||
if len(input[start:]) >= 2 && input[start] == '[' && input[start+1] == '[' {
|
||||
return d.parseRegularLink(input, start)
|
||||
} else if footnoteRegexp.MatchString(input[start:]) {
|
||||
return d.parseFootnoteReference(input, start)
|
||||
} else if statisticsTokenRegexp.MatchString(input[start:]) {
|
||||
return d.parseStatisticToken(input, start)
|
||||
}
|
||||
return 0, nil
|
||||
}
|
||||
|
||||
func (d *Document) parseFootnoteReference(input string, start int) (int, Node) {
|
||||
if m := footnoteRegexp.FindStringSubmatch(input[start:]); m != nil {
|
||||
name, definition := m[1], m[3]
|
||||
if name == "" && definition == "" {
|
||||
return 0, nil
|
||||
}
|
||||
link := FootnoteLink{name, nil}
|
||||
if definition != "" {
|
||||
link.Definition = &FootnoteDefinition{name, []Node{Paragraph{d.parseInline(definition)}}, true}
|
||||
}
|
||||
return len(m[0]), link
|
||||
}
|
||||
return 0, nil
|
||||
}
|
||||
|
||||
func (d *Document) parseStatisticToken(input string, start int) (int, Node) {
|
||||
if m := statisticsTokenRegexp.FindStringSubmatch(input[start:]); m != nil {
|
||||
return len(m[1]) + 2, StatisticToken{m[1]}
|
||||
}
|
||||
return 0, nil
|
||||
}
|
||||
|
||||
func (d *Document) parseAutoLink(input string, start int) (int, int, Node) {
|
||||
if !d.AutoLink || start == 0 || len(input[start:]) < 3 || input[start:start+3] != "://" {
|
||||
return 0, 0, nil
|
||||
}
|
||||
protocolStart, protocol := start-1, ""
|
||||
for ; protocolStart > 0; protocolStart-- {
|
||||
if !unicode.IsLetter(rune(input[protocolStart])) {
|
||||
protocolStart++
|
||||
break
|
||||
}
|
||||
}
|
||||
if m := autolinkProtocols.FindStringSubmatch(input[protocolStart:start]); m != nil {
|
||||
protocol = m[1]
|
||||
} else {
|
||||
return 0, 0, nil
|
||||
}
|
||||
end := start
|
||||
for ; end < len(input) && strings.ContainsRune(validURLCharacters, rune(input[end])); end++ {
|
||||
}
|
||||
path := input[start:end]
|
||||
if path == "://" {
|
||||
return 0, 0, nil
|
||||
}
|
||||
return len(protocol), len(path + protocol), RegularLink{protocol, nil, protocol + path, true}
|
||||
}
|
||||
|
||||
func (d *Document) parseRegularLink(input string, start int) (int, Node) {
|
||||
input = input[start:]
|
||||
if len(input) < 3 || input[:2] != "[[" || input[2] == '[' {
|
||||
return 0, nil
|
||||
}
|
||||
end := strings.Index(input, "]]")
|
||||
if end == -1 {
|
||||
return 0, nil
|
||||
}
|
||||
rawLinkParts := strings.Split(input[2:end], "][")
|
||||
description, link := ([]Node)(nil), rawLinkParts[0]
|
||||
if len(rawLinkParts) == 2 {
|
||||
link, description = rawLinkParts[0], d.parseInline(rawLinkParts[1])
|
||||
}
|
||||
if strings.ContainsRune(link, '\n') {
|
||||
return 0, nil
|
||||
}
|
||||
consumed := end + 2
|
||||
protocol, linkParts := "", strings.SplitN(link, ":", 2)
|
||||
if len(linkParts) == 2 {
|
||||
protocol = linkParts[0]
|
||||
}
|
||||
return consumed, RegularLink{protocol, description, link, false}
|
||||
}
|
||||
|
||||
func (d *Document) parseTimestamp(input string, start int) (int, Node) {
|
||||
if m := timestampRegexp.FindStringSubmatch(input[start:]); m != nil {
|
||||
ddmmyy, hhmm, interval, isDate := m[1], m[3], strings.TrimSpace(m[4]), false
|
||||
if hhmm == "" {
|
||||
hhmm, isDate = "00:00", true
|
||||
}
|
||||
t, err := time.Parse(timestampFormat, fmt.Sprintf("%s Mon %s", ddmmyy, hhmm))
|
||||
if err != nil {
|
||||
return 0, nil
|
||||
}
|
||||
timestamp := Timestamp{t, isDate, interval}
|
||||
return len(m[0]), timestamp
|
||||
}
|
||||
return 0, nil
|
||||
}
|
||||
|
||||
func (d *Document) parseEmphasis(input string, start int, isRaw bool) (int, Node) {
|
||||
marker, i := input[start], start
|
||||
if !hasValidPreAndBorderChars(input, i) {
|
||||
return 0, nil
|
||||
}
|
||||
for i, consumedNewLines := i+1, 0; i < len(input) && consumedNewLines <= d.MaxEmphasisNewLines; i++ {
|
||||
if input[i] == '\n' {
|
||||
consumedNewLines++
|
||||
}
|
||||
|
||||
if input[i] == marker && i != start+1 && hasValidPostAndBorderChars(input, i) {
|
||||
if isRaw {
|
||||
return i + 1 - start, Emphasis{input[start : start+1], d.parseRawInline(input[start+1 : i])}
|
||||
}
|
||||
return i + 1 - start, Emphasis{input[start : start+1], d.parseInline(input[start+1 : i])}
|
||||
}
|
||||
}
|
||||
return 0, nil
|
||||
}
|
||||
|
||||
// see org-emphasis-regexp-components (emacs elisp variable)
|
||||
|
||||
func hasValidPreAndBorderChars(input string, i int) bool {
|
||||
return (i+1 >= len(input) || isValidBorderChar(rune(input[i+1]))) && (i == 0 || isValidPreChar(rune(input[i-1])))
|
||||
}
|
||||
|
||||
func hasValidPostAndBorderChars(input string, i int) bool {
|
||||
return (i == 0 || isValidBorderChar(rune(input[i-1]))) && (i+1 >= len(input) || isValidPostChar(rune(input[i+1])))
|
||||
}
|
||||
|
||||
func isValidPreChar(r rune) bool {
|
||||
return unicode.IsSpace(r) || strings.ContainsRune(`-({'"`, r)
|
||||
}
|
||||
|
||||
func isValidPostChar(r rune) bool {
|
||||
return unicode.IsSpace(r) || strings.ContainsRune(`-.,:!?;'")}[`, r)
|
||||
}
|
||||
|
||||
func isValidBorderChar(r rune) bool { return !unicode.IsSpace(r) }
|
||||
|
||||
func (l RegularLink) Kind() string {
|
||||
if p := l.Protocol; l.Description != nil || (p != "" && p != "file" && p != "http" && p != "https") {
|
||||
return "regular"
|
||||
}
|
||||
if imageExtensionRegexp.MatchString(path.Ext(l.URL)) {
|
||||
return "image"
|
||||
}
|
||||
if videoExtensionRegexp.MatchString(path.Ext(l.URL)) {
|
||||
return "video"
|
||||
}
|
||||
return "regular"
|
||||
}
|
||||
|
||||
func (n Text) String() string { return orgWriter.nodesAsString(n) }
|
||||
func (n LineBreak) String() string { return orgWriter.nodesAsString(n) }
|
||||
func (n ExplicitLineBreak) String() string { return orgWriter.nodesAsString(n) }
|
||||
func (n StatisticToken) String() string { return orgWriter.nodesAsString(n) }
|
||||
func (n Emphasis) String() string { return orgWriter.nodesAsString(n) }
|
||||
func (n LatexFragment) String() string { return orgWriter.nodesAsString(n) }
|
||||
func (n FootnoteLink) String() string { return orgWriter.nodesAsString(n) }
|
||||
func (n RegularLink) String() string { return orgWriter.nodesAsString(n) }
|
||||
func (n Timestamp) String() string { return orgWriter.nodesAsString(n) }
|
||||
@ -0,0 +1,184 @@
|
||||
package org
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"path/filepath"
|
||||
"regexp"
|
||||
"strings"
|
||||
)
|
||||
|
||||
type Comment struct{ Content string }
|
||||
|
||||
type Keyword struct {
|
||||
Key string
|
||||
Value string
|
||||
}
|
||||
|
||||
type NodeWithName struct {
|
||||
Name string
|
||||
Node Node
|
||||
}
|
||||
|
||||
type NodeWithMeta struct {
|
||||
Node Node
|
||||
Meta Metadata
|
||||
}
|
||||
|
||||
type Metadata struct {
|
||||
Caption [][]Node
|
||||
HTMLAttributes [][]string
|
||||
}
|
||||
|
||||
type Include struct {
|
||||
Keyword
|
||||
Resolve func() Node
|
||||
}
|
||||
|
||||
var keywordRegexp = regexp.MustCompile(`^(\s*)#\+([^:]+):(\s+(.*)|$)`)
|
||||
var commentRegexp = regexp.MustCompile(`^(\s*)#(.*)`)
|
||||
|
||||
var includeFileRegexp = regexp.MustCompile(`(?i)^"([^"]+)" (src|example|export) (\w+)$`)
|
||||
var attributeRegexp = regexp.MustCompile(`(?:^|\s+)(:[-\w]+)\s+(.*)$`)
|
||||
|
||||
func lexKeywordOrComment(line string) (token, bool) {
|
||||
if m := keywordRegexp.FindStringSubmatch(line); m != nil {
|
||||
return token{"keyword", len(m[1]), m[2], m}, true
|
||||
} else if m := commentRegexp.FindStringSubmatch(line); m != nil {
|
||||
return token{"comment", len(m[1]), m[2], m}, true
|
||||
}
|
||||
return nilToken, false
|
||||
}
|
||||
|
||||
func (d *Document) parseComment(i int, stop stopFn) (int, Node) {
|
||||
return 1, Comment{d.tokens[i].content}
|
||||
}
|
||||
|
||||
func (d *Document) parseKeyword(i int, stop stopFn) (int, Node) {
|
||||
k := parseKeyword(d.tokens[i])
|
||||
switch k.Key {
|
||||
case "NAME":
|
||||
return d.parseNodeWithName(k, i, stop)
|
||||
case "SETUPFILE":
|
||||
return d.loadSetupFile(k)
|
||||
case "INCLUDE":
|
||||
return d.parseInclude(k)
|
||||
case "CAPTION", "ATTR_HTML":
|
||||
consumed, node := d.parseAffiliated(i, stop)
|
||||
if consumed != 0 {
|
||||
return consumed, node
|
||||
}
|
||||
fallthrough
|
||||
default:
|
||||
if _, ok := d.BufferSettings[k.Key]; ok {
|
||||
d.BufferSettings[k.Key] = strings.Join([]string{d.BufferSettings[k.Key], k.Value}, "\n")
|
||||
} else {
|
||||
d.BufferSettings[k.Key] = k.Value
|
||||
}
|
||||
return 1, k
|
||||
}
|
||||
}
|
||||
|
||||
func (d *Document) parseNodeWithName(k Keyword, i int, stop stopFn) (int, Node) {
|
||||
if stop(d, i+1) {
|
||||
return 0, nil
|
||||
}
|
||||
consumed, node := d.parseOne(i+1, stop)
|
||||
if consumed == 0 || node == nil {
|
||||
return 0, nil
|
||||
}
|
||||
d.NamedNodes[k.Value] = node
|
||||
return consumed + 1, NodeWithName{k.Value, node}
|
||||
}
|
||||
|
||||
func (d *Document) parseAffiliated(i int, stop stopFn) (int, Node) {
|
||||
start, meta := i, Metadata{}
|
||||
for ; !stop(d, i) && d.tokens[i].kind == "keyword"; i++ {
|
||||
switch k := parseKeyword(d.tokens[i]); k.Key {
|
||||
case "CAPTION":
|
||||
meta.Caption = append(meta.Caption, d.parseInline(k.Value))
|
||||
case "ATTR_HTML":
|
||||
attributes, rest := []string{}, k.Value
|
||||
for {
|
||||
if k, m := "", attributeRegexp.FindStringSubmatch(rest); m != nil {
|
||||
k, rest = m[1], m[2]
|
||||
attributes = append(attributes, k)
|
||||
if v, m := "", attributeRegexp.FindStringSubmatchIndex(rest); m != nil {
|
||||
v, rest = rest[:m[0]], rest[m[0]:]
|
||||
attributes = append(attributes, v)
|
||||
} else {
|
||||
attributes = append(attributes, strings.TrimSpace(rest))
|
||||
break
|
||||
}
|
||||
} else {
|
||||
break
|
||||
}
|
||||
}
|
||||
meta.HTMLAttributes = append(meta.HTMLAttributes, attributes)
|
||||
default:
|
||||
return 0, nil
|
||||
}
|
||||
}
|
||||
if stop(d, i) {
|
||||
return 0, nil
|
||||
}
|
||||
consumed, node := d.parseOne(i, stop)
|
||||
if consumed == 0 || node == nil {
|
||||
return 0, nil
|
||||
}
|
||||
i += consumed
|
||||
return i - start, NodeWithMeta{node, meta}
|
||||
}
|
||||
|
||||
func parseKeyword(t token) Keyword {
|
||||
k, v := t.matches[2], t.matches[4]
|
||||
return Keyword{strings.ToUpper(k), strings.TrimSpace(v)}
|
||||
}
|
||||
|
||||
func (d *Document) parseInclude(k Keyword) (int, Node) {
|
||||
resolve := func() Node {
|
||||
d.Log.Printf("Bad include %#v", k)
|
||||
return k
|
||||
}
|
||||
if m := includeFileRegexp.FindStringSubmatch(k.Value); m != nil {
|
||||
path, kind, lang := m[1], m[2], m[3]
|
||||
if !filepath.IsAbs(path) {
|
||||
path = filepath.Join(filepath.Dir(d.Path), path)
|
||||
}
|
||||
resolve = func() Node {
|
||||
bs, err := d.ReadFile(path)
|
||||
if err != nil {
|
||||
d.Log.Printf("Bad include %#v: %s", k, err)
|
||||
return k
|
||||
}
|
||||
return Block{strings.ToUpper(kind), []string{lang}, d.parseRawInline(string(bs))}
|
||||
}
|
||||
}
|
||||
return 1, Include{k, resolve}
|
||||
}
|
||||
|
||||
func (d *Document) loadSetupFile(k Keyword) (int, Node) {
|
||||
path := k.Value
|
||||
if !filepath.IsAbs(path) {
|
||||
path = filepath.Join(filepath.Dir(d.Path), path)
|
||||
}
|
||||
bs, err := d.ReadFile(path)
|
||||
if err != nil {
|
||||
d.Log.Printf("Bad setup file: %#v: %s", k, err)
|
||||
return 1, k
|
||||
}
|
||||
setupDocument := d.Configuration.Parse(bytes.NewReader(bs), path)
|
||||
if err := setupDocument.Error; err != nil {
|
||||
d.Log.Printf("Bad setup file: %#v: %s", k, err)
|
||||
return 1, k
|
||||
}
|
||||
for k, v := range setupDocument.BufferSettings {
|
||||
d.BufferSettings[k] = v
|
||||
}
|
||||
return 1, k
|
||||
}
|
||||
|
||||
func (n Comment) String() string { return orgWriter.nodesAsString(n) }
|
||||
func (n Keyword) String() string { return orgWriter.nodesAsString(n) }
|
||||
func (n NodeWithMeta) String() string { return orgWriter.nodesAsString(n) }
|
||||
func (n NodeWithName) String() string { return orgWriter.nodesAsString(n) }
|
||||
func (n Include) String() string { return orgWriter.nodesAsString(n) }
|
||||
@ -0,0 +1,114 @@
|
||||
package org
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"regexp"
|
||||
"strings"
|
||||
"unicode"
|
||||
)
|
||||
|
||||
type List struct {
|
||||
Kind string
|
||||
Items []Node
|
||||
}
|
||||
|
||||
type ListItem struct {
|
||||
Bullet string
|
||||
Status string
|
||||
Children []Node
|
||||
}
|
||||
|
||||
type DescriptiveListItem struct {
|
||||
Bullet string
|
||||
Status string
|
||||
Term []Node
|
||||
Details []Node
|
||||
}
|
||||
|
||||
var unorderedListRegexp = regexp.MustCompile(`^(\s*)([+*-])(\s+(.*)|$)`)
|
||||
var orderedListRegexp = regexp.MustCompile(`^(\s*)(([0-9]+|[a-zA-Z])[.)])(\s+(.*)|$)`)
|
||||
var descriptiveListItemRegexp = regexp.MustCompile(`\s::(\s|$)`)
|
||||
var listItemStatusRegexp = regexp.MustCompile(`\[( |X|-)\]\s`)
|
||||
|
||||
func lexList(line string) (token, bool) {
|
||||
if m := unorderedListRegexp.FindStringSubmatch(line); m != nil {
|
||||
return token{"unorderedList", len(m[1]), m[4], m}, true
|
||||
} else if m := orderedListRegexp.FindStringSubmatch(line); m != nil {
|
||||
return token{"orderedList", len(m[1]), m[5], m}, true
|
||||
}
|
||||
return nilToken, false
|
||||
}
|
||||
|
||||
func isListToken(t token) bool {
|
||||
return t.kind == "unorderedList" || t.kind == "orderedList"
|
||||
}
|
||||
|
||||
func listKind(t token) (string, string) {
|
||||
kind := ""
|
||||
switch bullet := t.matches[2]; {
|
||||
case bullet == "*" || bullet == "+" || bullet == "-":
|
||||
kind = "unordered"
|
||||
case unicode.IsLetter(rune(bullet[0])), unicode.IsDigit(rune(bullet[0])):
|
||||
kind = "ordered"
|
||||
default:
|
||||
panic(fmt.Sprintf("bad list bullet '%s': %#v", bullet, t))
|
||||
}
|
||||
if descriptiveListItemRegexp.MatchString(t.content) {
|
||||
return kind, "descriptive"
|
||||
}
|
||||
return kind, kind
|
||||
}
|
||||
|
||||
func (d *Document) parseList(i int, parentStop stopFn) (int, Node) {
|
||||
start, lvl := i, d.tokens[i].lvl
|
||||
listMainKind, kind := listKind(d.tokens[i])
|
||||
list := List{Kind: kind}
|
||||
stop := func(*Document, int) bool {
|
||||
if parentStop(d, i) || d.tokens[i].lvl != lvl || !isListToken(d.tokens[i]) {
|
||||
return true
|
||||
}
|
||||
itemMainKind, _ := listKind(d.tokens[i])
|
||||
return itemMainKind != listMainKind
|
||||
}
|
||||
for !stop(d, i) {
|
||||
consumed, node := d.parseListItem(list, i, parentStop)
|
||||
i += consumed
|
||||
list.Items = append(list.Items, node)
|
||||
}
|
||||
return i - start, list
|
||||
}
|
||||
|
||||
func (d *Document) parseListItem(l List, i int, parentStop stopFn) (int, Node) {
|
||||
start, nodes, bullet := i, []Node{}, d.tokens[i].matches[2]
|
||||
minIndent, dterm, content, status := d.tokens[i].lvl+len(bullet), "", d.tokens[i].content, ""
|
||||
if m := listItemStatusRegexp.FindStringSubmatch(content); m != nil {
|
||||
status, content = m[1], content[len("[ ] "):]
|
||||
}
|
||||
if l.Kind == "descriptive" {
|
||||
if m := descriptiveListItemRegexp.FindStringIndex(content); m != nil {
|
||||
dterm, content = content[:m[0]], content[m[1]:]
|
||||
}
|
||||
}
|
||||
|
||||
d.tokens[i] = tokenize(strings.Repeat(" ", minIndent) + content)
|
||||
stop := func(d *Document, i int) bool {
|
||||
if parentStop(d, i) {
|
||||
return true
|
||||
}
|
||||
t := d.tokens[i]
|
||||
return t.lvl < minIndent && !(t.kind == "text" && t.content == "")
|
||||
}
|
||||
for !stop(d, i) && (i <= start+1 || !isSecondBlankLine(d, i)) {
|
||||
consumed, node := d.parseOne(i, stop)
|
||||
i += consumed
|
||||
nodes = append(nodes, node)
|
||||
}
|
||||
if l.Kind == "descriptive" {
|
||||
return i - start, DescriptiveListItem{bullet, status, d.parseInline(dterm), nodes}
|
||||
}
|
||||
return i - start, ListItem{bullet, status, nodes}
|
||||
}
|
||||
|
||||
func (n List) String() string { return orgWriter.nodesAsString(n) }
|
||||
func (n ListItem) String() string { return orgWriter.nodesAsString(n) }
|
||||
func (n DescriptiveListItem) String() string { return orgWriter.nodesAsString(n) }
|
||||
@ -0,0 +1,334 @@
|
||||
package org
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"strings"
|
||||
"unicode"
|
||||
"unicode/utf8"
|
||||
)
|
||||
|
||||
// OrgWriter export an org document into pretty printed org document.
|
||||
type OrgWriter struct {
|
||||
ExtendingWriter Writer
|
||||
TagsColumn int
|
||||
|
||||
strings.Builder
|
||||
indent string
|
||||
}
|
||||
|
||||
var emphasisOrgBorders = map[string][]string{
|
||||
"_": []string{"_", "_"},
|
||||
"*": []string{"*", "*"},
|
||||
"/": []string{"/", "/"},
|
||||
"+": []string{"+", "+"},
|
||||
"~": []string{"~", "~"},
|
||||
"=": []string{"=", "="},
|
||||
"_{}": []string{"_{", "}"},
|
||||
"^{}": []string{"^{", "}"},
|
||||
}
|
||||
|
||||
func NewOrgWriter() *OrgWriter {
|
||||
return &OrgWriter{
|
||||
TagsColumn: 77,
|
||||
}
|
||||
}
|
||||
|
||||
func (w *OrgWriter) WriterWithExtensions() Writer {
|
||||
if w.ExtendingWriter != nil {
|
||||
return w.ExtendingWriter
|
||||
}
|
||||
return w
|
||||
}
|
||||
|
||||
func (w *OrgWriter) Before(d *Document) {}
|
||||
func (w *OrgWriter) After(d *Document) {}
|
||||
|
||||
func (w *OrgWriter) emptyClone() *OrgWriter {
|
||||
wcopy := *w
|
||||
wcopy.Builder = strings.Builder{}
|
||||
return &wcopy
|
||||
}
|
||||
|
||||
func (w *OrgWriter) nodesAsString(nodes ...Node) string {
|
||||
tmp := w.emptyClone()
|
||||
WriteNodes(tmp, nodes...)
|
||||
return tmp.String()
|
||||
}
|
||||
|
||||
func (w *OrgWriter) WriteHeadline(h Headline) {
|
||||
tmp := w.emptyClone()
|
||||
tmp.WriteString(strings.Repeat("*", h.Lvl))
|
||||
if h.Status != "" {
|
||||
tmp.WriteString(" " + h.Status)
|
||||
}
|
||||
if h.Priority != "" {
|
||||
tmp.WriteString(" [#" + h.Priority + "]")
|
||||
}
|
||||
tmp.WriteString(" ")
|
||||
WriteNodes(tmp, h.Title...)
|
||||
hString := tmp.String()
|
||||
if len(h.Tags) != 0 {
|
||||
tString := ":" + strings.Join(h.Tags, ":") + ":"
|
||||
if n := w.TagsColumn - len(tString) - len(hString); n > 0 {
|
||||
w.WriteString(hString + strings.Repeat(" ", n) + tString)
|
||||
} else {
|
||||
w.WriteString(hString + " " + tString)
|
||||
}
|
||||
} else {
|
||||
w.WriteString(hString)
|
||||
}
|
||||
w.WriteString("\n")
|
||||
if len(h.Children) != 0 {
|
||||
w.WriteString(w.indent)
|
||||
}
|
||||
if h.Properties != nil {
|
||||
WriteNodes(w, *h.Properties)
|
||||
}
|
||||
WriteNodes(w, h.Children...)
|
||||
}
|
||||
|
||||
func (w *OrgWriter) WriteBlock(b Block) {
|
||||
w.WriteString(w.indent + "#+BEGIN_" + b.Name)
|
||||
if len(b.Parameters) != 0 {
|
||||
w.WriteString(" " + strings.Join(b.Parameters, " "))
|
||||
}
|
||||
w.WriteString("\n")
|
||||
if isRawTextBlock(b.Name) {
|
||||
w.WriteString(w.indent)
|
||||
}
|
||||
WriteNodes(w, b.Children...)
|
||||
if !isRawTextBlock(b.Name) {
|
||||
w.WriteString(w.indent)
|
||||
}
|
||||
w.WriteString("#+END_" + b.Name + "\n")
|
||||
}
|
||||
|
||||
func (w *OrgWriter) WriteDrawer(d Drawer) {
|
||||
w.WriteString(w.indent + ":" + d.Name + ":\n")
|
||||
WriteNodes(w, d.Children...)
|
||||
w.WriteString(w.indent + ":END:\n")
|
||||
}
|
||||
|
||||
func (w *OrgWriter) WritePropertyDrawer(d PropertyDrawer) {
|
||||
w.WriteString(":PROPERTIES:\n")
|
||||
for _, kvPair := range d.Properties {
|
||||
k, v := kvPair[0], kvPair[1]
|
||||
if v != "" {
|
||||
v = " " + v
|
||||
}
|
||||
w.WriteString(fmt.Sprintf(":%s:%s\n", k, v))
|
||||
}
|
||||
w.WriteString(":END:\n")
|
||||
}
|
||||
|
||||
func (w *OrgWriter) WriteFootnoteDefinition(f FootnoteDefinition) {
|
||||
w.WriteString(fmt.Sprintf("[fn:%s]", f.Name))
|
||||
content := w.nodesAsString(f.Children...)
|
||||
if content != "" && !unicode.IsSpace(rune(content[0])) {
|
||||
w.WriteString(" ")
|
||||
}
|
||||
w.WriteString(content)
|
||||
}
|
||||
|
||||
func (w *OrgWriter) WriteParagraph(p Paragraph) {
|
||||
content := w.nodesAsString(p.Children...)
|
||||
if len(content) > 0 && content[0] != '\n' {
|
||||
w.WriteString(w.indent)
|
||||
}
|
||||
w.WriteString(content + "\n")
|
||||
}
|
||||
|
||||
func (w *OrgWriter) WriteExample(e Example) {
|
||||
for _, n := range e.Children {
|
||||
w.WriteString(w.indent + ":")
|
||||
if content := w.nodesAsString(n); content != "" {
|
||||
w.WriteString(" " + content)
|
||||
}
|
||||
w.WriteString("\n")
|
||||
}
|
||||
}
|
||||
|
||||
func (w *OrgWriter) WriteKeyword(k Keyword) {
|
||||
w.WriteString(w.indent + "#+" + k.Key + ":")
|
||||
if k.Value != "" {
|
||||
w.WriteString(" " + k.Value)
|
||||
}
|
||||
w.WriteString("\n")
|
||||
}
|
||||
|
||||
func (w *OrgWriter) WriteInclude(i Include) {
|
||||
w.WriteKeyword(i.Keyword)
|
||||
}
|
||||
|
||||
func (w *OrgWriter) WriteNodeWithMeta(n NodeWithMeta) {
|
||||
for _, ns := range n.Meta.Caption {
|
||||
w.WriteString("#+CAPTION: ")
|
||||
WriteNodes(w, ns...)
|
||||
w.WriteString("\n")
|
||||
}
|
||||
for _, attributes := range n.Meta.HTMLAttributes {
|
||||
w.WriteString("#+ATTR_HTML: ")
|
||||
w.WriteString(strings.Join(attributes, " ") + "\n")
|
||||
}
|
||||
WriteNodes(w, n.Node)
|
||||
}
|
||||
|
||||
func (w *OrgWriter) WriteNodeWithName(n NodeWithName) {
|
||||
w.WriteString(fmt.Sprintf("#+NAME: %s\n", n.Name))
|
||||
WriteNodes(w, n.Node)
|
||||
}
|
||||
|
||||
func (w *OrgWriter) WriteComment(c Comment) {
|
||||
w.WriteString(w.indent + "#" + c.Content + "\n")
|
||||
}
|
||||
|
||||
func (w *OrgWriter) WriteList(l List) { WriteNodes(w, l.Items...) }
|
||||
|
||||
func (w *OrgWriter) WriteListItem(li ListItem) {
|
||||
liWriter := w.emptyClone()
|
||||
liWriter.indent = w.indent + strings.Repeat(" ", len(li.Bullet)+1)
|
||||
WriteNodes(liWriter, li.Children...)
|
||||
content := strings.TrimPrefix(liWriter.String(), liWriter.indent)
|
||||
w.WriteString(w.indent + li.Bullet)
|
||||
if li.Status != "" {
|
||||
w.WriteString(fmt.Sprintf(" [%s]", li.Status))
|
||||
}
|
||||
if len(content) > 0 && content[0] == '\n' {
|
||||
w.WriteString(content)
|
||||
} else {
|
||||
w.WriteString(" " + content)
|
||||
}
|
||||
}
|
||||
|
||||
func (w *OrgWriter) WriteDescriptiveListItem(di DescriptiveListItem) {
|
||||
w.WriteString(w.indent + di.Bullet)
|
||||
if di.Status != "" {
|
||||
w.WriteString(fmt.Sprintf(" [%s]", di.Status))
|
||||
}
|
||||
indent := w.indent + strings.Repeat(" ", len(di.Bullet)+1)
|
||||
if len(di.Term) != 0 {
|
||||
term := w.nodesAsString(di.Term...)
|
||||
w.WriteString(" " + term + " ::")
|
||||
indent = indent + strings.Repeat(" ", len(term)+4)
|
||||
}
|
||||
diWriter := w.emptyClone()
|
||||
diWriter.indent = indent
|
||||
WriteNodes(diWriter, di.Details...)
|
||||
details := strings.TrimPrefix(diWriter.String(), diWriter.indent)
|
||||
if len(details) > 0 && details[0] == '\n' {
|
||||
w.WriteString(details)
|
||||
} else {
|
||||
w.WriteString(" " + details)
|
||||
}
|
||||
}
|
||||
|
||||
func (w *OrgWriter) WriteTable(t Table) {
|
||||
for _, row := range t.Rows {
|
||||
w.WriteString(w.indent)
|
||||
if len(row.Columns) == 0 {
|
||||
w.WriteString(`|`)
|
||||
for i := 0; i < len(t.ColumnInfos); i++ {
|
||||
w.WriteString(strings.Repeat("-", t.ColumnInfos[i].Len+2))
|
||||
if i < len(t.ColumnInfos)-1 {
|
||||
w.WriteString("+")
|
||||
}
|
||||
}
|
||||
w.WriteString(`|`)
|
||||
|
||||
} else {
|
||||
w.WriteString(`|`)
|
||||
for _, column := range row.Columns {
|
||||
w.WriteString(` `)
|
||||
content := w.nodesAsString(column.Children...)
|
||||
if content == "" {
|
||||
content = " "
|
||||
}
|
||||
n := column.Len - utf8.RuneCountInString(content)
|
||||
if n < 0 {
|
||||
n = 0
|
||||
}
|
||||
if column.Align == "center" {
|
||||
if n%2 != 0 {
|
||||
w.WriteString(" ")
|
||||
}
|
||||
w.WriteString(strings.Repeat(" ", n/2) + content + strings.Repeat(" ", n/2))
|
||||
} else if column.Align == "right" {
|
||||
w.WriteString(strings.Repeat(" ", n) + content)
|
||||
} else {
|
||||
w.WriteString(content + strings.Repeat(" ", n))
|
||||
}
|
||||
w.WriteString(` |`)
|
||||
}
|
||||
}
|
||||
w.WriteString("\n")
|
||||
}
|
||||
}
|
||||
|
||||
func (w *OrgWriter) WriteHorizontalRule(hr HorizontalRule) {
|
||||
w.WriteString(w.indent + "-----\n")
|
||||
}
|
||||
|
||||
func (w *OrgWriter) WriteText(t Text) { w.WriteString(t.Content) }
|
||||
|
||||
func (w *OrgWriter) WriteEmphasis(e Emphasis) {
|
||||
borders, ok := emphasisOrgBorders[e.Kind]
|
||||
if !ok {
|
||||
panic(fmt.Sprintf("bad emphasis %#v", e))
|
||||
}
|
||||
w.WriteString(borders[0])
|
||||
WriteNodes(w, e.Content...)
|
||||
w.WriteString(borders[1])
|
||||
}
|
||||
|
||||
func (w *OrgWriter) WriteLatexFragment(l LatexFragment) {
|
||||
w.WriteString(l.OpeningPair)
|
||||
WriteNodes(w, l.Content...)
|
||||
w.WriteString(l.ClosingPair)
|
||||
}
|
||||
|
||||
func (w *OrgWriter) WriteStatisticToken(s StatisticToken) {
|
||||
w.WriteString(fmt.Sprintf("[%s]", s.Content))
|
||||
}
|
||||
|
||||
func (w *OrgWriter) WriteLineBreak(l LineBreak) {
|
||||
w.WriteString(strings.Repeat("\n"+w.indent, l.Count))
|
||||
}
|
||||
|
||||
func (w *OrgWriter) WriteExplicitLineBreak(l ExplicitLineBreak) {
|
||||
w.WriteString(`\\` + "\n" + w.indent)
|
||||
}
|
||||
|
||||
func (w *OrgWriter) WriteTimestamp(t Timestamp) {
|
||||
w.WriteString("<")
|
||||
if t.IsDate {
|
||||
w.WriteString(t.Time.Format(datestampFormat))
|
||||
} else {
|
||||
w.WriteString(t.Time.Format(timestampFormat))
|
||||
}
|
||||
if t.Interval != "" {
|
||||
w.WriteString(" " + t.Interval)
|
||||
}
|
||||
w.WriteString(">")
|
||||
}
|
||||
|
||||
func (w *OrgWriter) WriteFootnoteLink(l FootnoteLink) {
|
||||
w.WriteString("[fn:" + l.Name)
|
||||
if l.Definition != nil {
|
||||
w.WriteString(":")
|
||||
WriteNodes(w, l.Definition.Children[0].(Paragraph).Children...)
|
||||
}
|
||||
w.WriteString("]")
|
||||
}
|
||||
|
||||
func (w *OrgWriter) WriteRegularLink(l RegularLink) {
|
||||
if l.AutoLink {
|
||||
w.WriteString(l.URL)
|
||||
} else if l.Description == nil {
|
||||
w.WriteString(fmt.Sprintf("[[%s]]", l.URL))
|
||||
} else {
|
||||
descriptionWriter := w.emptyClone()
|
||||
WriteNodes(descriptionWriter, l.Description...)
|
||||
description := descriptionWriter.String()
|
||||
w.WriteString(fmt.Sprintf("[[%s][%s]]", l.URL, description))
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,46 @@
|
||||
package org
|
||||
|
||||
import (
|
||||
"regexp"
|
||||
"strings"
|
||||
)
|
||||
|
||||
type Paragraph struct{ Children []Node }
|
||||
type HorizontalRule struct{}
|
||||
|
||||
var horizontalRuleRegexp = regexp.MustCompile(`^(\s*)-{5,}\s*$`)
|
||||
var plainTextRegexp = regexp.MustCompile(`^(\s*)(.*)`)
|
||||
|
||||
func lexText(line string) (token, bool) {
|
||||
if m := plainTextRegexp.FindStringSubmatch(line); m != nil {
|
||||
return token{"text", len(m[1]), m[2], m}, true
|
||||
}
|
||||
return nilToken, false
|
||||
}
|
||||
|
||||
func lexHorizontalRule(line string) (token, bool) {
|
||||
if m := horizontalRuleRegexp.FindStringSubmatch(line); m != nil {
|
||||
return token{"horizontalRule", len(m[1]), "", m}, true
|
||||
}
|
||||
return nilToken, false
|
||||
}
|
||||
|
||||
func (d *Document) parseParagraph(i int, parentStop stopFn) (int, Node) {
|
||||
lines, start := []string{d.tokens[i].content}, i
|
||||
i++
|
||||
stop := func(d *Document, i int) bool {
|
||||
return parentStop(d, i) || d.tokens[i].kind != "text" || d.tokens[i].content == ""
|
||||
}
|
||||
for ; !stop(d, i); i++ {
|
||||
lines = append(lines, d.tokens[i].content)
|
||||
}
|
||||
consumed := i - start
|
||||
return consumed, Paragraph{d.parseInline(strings.Join(lines, "\n"))}
|
||||
}
|
||||
|
||||
func (d *Document) parseHorizontalRule(i int, parentStop stopFn) (int, Node) {
|
||||
return 1, HorizontalRule{}
|
||||
}
|
||||
|
||||
func (n Paragraph) String() string { return orgWriter.nodesAsString(n) }
|
||||
func (n HorizontalRule) String() string { return orgWriter.nodesAsString(n) }
|
||||
@ -0,0 +1,130 @@
|
||||
package org
|
||||
|
||||
import (
|
||||
"regexp"
|
||||
"strconv"
|
||||
"strings"
|
||||
"unicode/utf8"
|
||||
)
|
||||
|
||||
type Table struct {
|
||||
Rows []Row
|
||||
ColumnInfos []ColumnInfo
|
||||
}
|
||||
|
||||
type Row struct {
|
||||
Columns []Column
|
||||
IsSpecial bool
|
||||
}
|
||||
|
||||
type Column struct {
|
||||
Children []Node
|
||||
*ColumnInfo
|
||||
}
|
||||
|
||||
type ColumnInfo struct {
|
||||
Align string
|
||||
Len int
|
||||
}
|
||||
|
||||
var tableSeparatorRegexp = regexp.MustCompile(`^(\s*)(\|[+-|]*)\s*$`)
|
||||
var tableRowRegexp = regexp.MustCompile(`^(\s*)(\|.*)`)
|
||||
|
||||
var columnAlignRegexp = regexp.MustCompile(`^<(l|c|r)>$`)
|
||||
|
||||
func lexTable(line string) (token, bool) {
|
||||
if m := tableSeparatorRegexp.FindStringSubmatch(line); m != nil {
|
||||
return token{"tableSeparator", len(m[1]), m[2], m}, true
|
||||
} else if m := tableRowRegexp.FindStringSubmatch(line); m != nil {
|
||||
return token{"tableRow", len(m[1]), m[2], m}, true
|
||||
}
|
||||
return nilToken, false
|
||||
}
|
||||
|
||||
func (d *Document) parseTable(i int, parentStop stopFn) (int, Node) {
|
||||
rawRows, start := [][]string{}, i
|
||||
for ; !parentStop(d, i); i++ {
|
||||
if t := d.tokens[i]; t.kind == "tableRow" {
|
||||
rawRow := strings.FieldsFunc(d.tokens[i].content, func(r rune) bool { return r == '|' })
|
||||
for i := range rawRow {
|
||||
rawRow[i] = strings.TrimSpace(rawRow[i])
|
||||
}
|
||||
rawRows = append(rawRows, rawRow)
|
||||
} else if t.kind == "tableSeparator" {
|
||||
rawRows = append(rawRows, nil)
|
||||
} else {
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
table := Table{nil, getColumnInfos(rawRows)}
|
||||
for _, rawColumns := range rawRows {
|
||||
row := Row{nil, isSpecialRow(rawColumns)}
|
||||
if len(rawColumns) != 0 {
|
||||
for i := range table.ColumnInfos {
|
||||
column := Column{nil, &table.ColumnInfos[i]}
|
||||
if i < len(rawColumns) {
|
||||
column.Children = d.parseInline(rawColumns[i])
|
||||
}
|
||||
row.Columns = append(row.Columns, column)
|
||||
}
|
||||
}
|
||||
table.Rows = append(table.Rows, row)
|
||||
}
|
||||
return i - start, table
|
||||
}
|
||||
|
||||
func getColumnInfos(rows [][]string) []ColumnInfo {
|
||||
columnCount := 0
|
||||
for _, columns := range rows {
|
||||
if n := len(columns); n > columnCount {
|
||||
columnCount = n
|
||||
}
|
||||
}
|
||||
|
||||
columnInfos := make([]ColumnInfo, columnCount)
|
||||
for i := 0; i < columnCount; i++ {
|
||||
countNumeric, countNonNumeric := 0, 0
|
||||
for _, columns := range rows {
|
||||
if i >= len(columns) {
|
||||
continue
|
||||
}
|
||||
|
||||
if n := utf8.RuneCountInString(columns[i]); n > columnInfos[i].Len {
|
||||
columnInfos[i].Len = n
|
||||
}
|
||||
|
||||
if m := columnAlignRegexp.FindStringSubmatch(columns[i]); m != nil && isSpecialRow(columns) {
|
||||
switch m[1] {
|
||||
case "l":
|
||||
columnInfos[i].Align = "left"
|
||||
case "c":
|
||||
columnInfos[i].Align = "center"
|
||||
case "r":
|
||||
columnInfos[i].Align = "right"
|
||||
}
|
||||
} else if _, err := strconv.ParseFloat(columns[i], 32); err == nil {
|
||||
countNumeric++
|
||||
} else if strings.TrimSpace(columns[i]) != "" {
|
||||
countNonNumeric++
|
||||
}
|
||||
}
|
||||
|
||||
if columnInfos[i].Align == "" && countNumeric >= countNonNumeric {
|
||||
columnInfos[i].Align = "right"
|
||||
}
|
||||
}
|
||||
return columnInfos
|
||||
}
|
||||
|
||||
func isSpecialRow(rawColumns []string) bool {
|
||||
isAlignRow := true
|
||||
for _, rawColumn := range rawColumns {
|
||||
if !columnAlignRegexp.MatchString(rawColumn) && rawColumn != "" {
|
||||
isAlignRow = false
|
||||
}
|
||||
}
|
||||
return isAlignRow
|
||||
}
|
||||
|
||||
func (n Table) String() string { return orgWriter.nodesAsString(n) }
|
||||
@ -0,0 +1,19 @@
|
||||
package org
|
||||
|
||||
func isSecondBlankLine(d *Document, i int) bool {
|
||||
if i-1 <= 0 {
|
||||
return false
|
||||
}
|
||||
t1, t2 := d.tokens[i-1], d.tokens[i]
|
||||
if t1.kind == "text" && t2.kind == "text" && t1.content == "" && t2.content == "" {
|
||||
return true
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
func isImageOrVideoLink(n Node) bool {
|
||||
if l, ok := n.(RegularLink); ok && l.Kind() == "video" || l.Kind() == "image" {
|
||||
return true
|
||||
}
|
||||
return false
|
||||
}
|
||||
@ -0,0 +1,103 @@
|
||||
package org
|
||||
|
||||
import "fmt"
|
||||
|
||||
// Writer is the interface that is used to export a parsed document into a new format. See Document.Write().
|
||||
type Writer interface {
|
||||
Before(*Document) // Before is called before any nodes are passed to the writer.
|
||||
After(*Document) // After is called after all nodes have been passed to the writer.
|
||||
String() string // String is called at the very end to retrieve the final output.
|
||||
|
||||
WriterWithExtensions() Writer
|
||||
|
||||
WriteKeyword(Keyword)
|
||||
WriteInclude(Include)
|
||||
WriteComment(Comment)
|
||||
WriteNodeWithMeta(NodeWithMeta)
|
||||
WriteNodeWithName(NodeWithName)
|
||||
WriteHeadline(Headline)
|
||||
WriteBlock(Block)
|
||||
WriteExample(Example)
|
||||
WriteDrawer(Drawer)
|
||||
WritePropertyDrawer(PropertyDrawer)
|
||||
WriteList(List)
|
||||
WriteListItem(ListItem)
|
||||
WriteDescriptiveListItem(DescriptiveListItem)
|
||||
WriteTable(Table)
|
||||
WriteHorizontalRule(HorizontalRule)
|
||||
WriteParagraph(Paragraph)
|
||||
WriteText(Text)
|
||||
WriteEmphasis(Emphasis)
|
||||
WriteLatexFragment(LatexFragment)
|
||||
WriteStatisticToken(StatisticToken)
|
||||
WriteExplicitLineBreak(ExplicitLineBreak)
|
||||
WriteLineBreak(LineBreak)
|
||||
WriteRegularLink(RegularLink)
|
||||
WriteTimestamp(Timestamp)
|
||||
WriteFootnoteLink(FootnoteLink)
|
||||
WriteFootnoteDefinition(FootnoteDefinition)
|
||||
}
|
||||
|
||||
func WriteNodes(w Writer, nodes ...Node) {
|
||||
w = w.WriterWithExtensions()
|
||||
for _, n := range nodes {
|
||||
switch n := n.(type) {
|
||||
case Keyword:
|
||||
w.WriteKeyword(n)
|
||||
case Include:
|
||||
w.WriteInclude(n)
|
||||
case Comment:
|
||||
w.WriteComment(n)
|
||||
case NodeWithMeta:
|
||||
w.WriteNodeWithMeta(n)
|
||||
case NodeWithName:
|
||||
w.WriteNodeWithName(n)
|
||||
case Headline:
|
||||
w.WriteHeadline(n)
|
||||
case Block:
|
||||
w.WriteBlock(n)
|
||||
case Example:
|
||||
w.WriteExample(n)
|
||||
case Drawer:
|
||||
w.WriteDrawer(n)
|
||||
case PropertyDrawer:
|
||||
w.WritePropertyDrawer(n)
|
||||
case List:
|
||||
w.WriteList(n)
|
||||
case ListItem:
|
||||
w.WriteListItem(n)
|
||||
case DescriptiveListItem:
|
||||
w.WriteDescriptiveListItem(n)
|
||||
case Table:
|
||||
w.WriteTable(n)
|
||||
case HorizontalRule:
|
||||
w.WriteHorizontalRule(n)
|
||||
case Paragraph:
|
||||
w.WriteParagraph(n)
|
||||
case Text:
|
||||
w.WriteText(n)
|
||||
case Emphasis:
|
||||
w.WriteEmphasis(n)
|
||||
case LatexFragment:
|
||||
w.WriteLatexFragment(n)
|
||||
case StatisticToken:
|
||||
w.WriteStatisticToken(n)
|
||||
case ExplicitLineBreak:
|
||||
w.WriteExplicitLineBreak(n)
|
||||
case LineBreak:
|
||||
w.WriteLineBreak(n)
|
||||
case RegularLink:
|
||||
w.WriteRegularLink(n)
|
||||
case Timestamp:
|
||||
w.WriteTimestamp(n)
|
||||
case FootnoteLink:
|
||||
w.WriteFootnoteLink(n)
|
||||
case FootnoteDefinition:
|
||||
w.WriteFootnoteDefinition(n)
|
||||
default:
|
||||
if n != nil {
|
||||
panic(fmt.Sprintf("bad node %T %#v", n, n))
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -1,32 +0,0 @@
|
||||
// Package blackfriday is a Markdown processor.
|
||||
//
|
||||
// It translates plain text with simple formatting rules into HTML or LaTeX.
|
||||
//
|
||||
// Sanitized Anchor Names
|
||||
//
|
||||
// Blackfriday includes an algorithm for creating sanitized anchor names
|
||||
// corresponding to a given input text. This algorithm is used to create
|
||||
// anchors for headings when EXTENSION_AUTO_HEADER_IDS is enabled. The
|
||||
// algorithm is specified below, so that other packages can create
|
||||
// compatible anchor names and links to those anchors.
|
||||
//
|
||||
// The algorithm iterates over the input text, interpreted as UTF-8,
|
||||
// one Unicode code point (rune) at a time. All runes that are letters (category L)
|
||||
// or numbers (category N) are considered valid characters. They are mapped to
|
||||
// lower case, and included in the output. All other runes are considered
|
||||
// invalid characters. Invalid characters that preceed the first valid character,
|
||||
// as well as invalid character that follow the last valid character
|
||||
// are dropped completely. All other sequences of invalid characters
|
||||
// between two valid characters are replaced with a single dash character '-'.
|
||||
//
|
||||
// SanitizedAnchorName exposes this functionality, and can be used to
|
||||
// create compatible links to the anchor names generated by blackfriday.
|
||||
// This algorithm is also implemented in a small standalone package at
|
||||
// github.com/shurcooL/sanitized_anchor_name. It can be useful for clients
|
||||
// that want a small package and don't need full functionality of blackfriday.
|
||||
package blackfriday
|
||||
|
||||
// NOTE: Keep Sanitized Anchor Name algorithm in sync with package
|
||||
// github.com/shurcooL/sanitized_anchor_name.
|
||||
// Otherwise, users of sanitized_anchor_name will get anchor names
|
||||
// that are incompatible with those generated by blackfriday.
|
||||
@ -1,938 +0,0 @@
|
||||
//
|
||||
// Blackfriday Markdown Processor
|
||||
// Available at http://github.com/russross/blackfriday
|
||||
//
|
||||
// Copyright © 2011 Russ Ross <russ@russross.com>.
|
||||
// Distributed under the Simplified BSD License.
|
||||
// See README.md for details.
|
||||
//
|
||||
|
||||
//
|
||||
//
|
||||
// HTML rendering backend
|
||||
//
|
||||
//
|
||||
|
||||
package blackfriday
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"fmt"
|
||||
"regexp"
|
||||
"strconv"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// Html renderer configuration options.
|
||||
const (
|
||||
HTML_SKIP_HTML = 1 << iota // skip preformatted HTML blocks
|
||||
HTML_SKIP_STYLE // skip embedded <style> elements
|
||||
HTML_SKIP_IMAGES // skip embedded images
|
||||
HTML_SKIP_LINKS // skip all links
|
||||
HTML_SAFELINK // only link to trusted protocols
|
||||
HTML_NOFOLLOW_LINKS // only link with rel="nofollow"
|
||||
HTML_NOREFERRER_LINKS // only link with rel="noreferrer"
|
||||
HTML_HREF_TARGET_BLANK // add a blank target
|
||||
HTML_TOC // generate a table of contents
|
||||
HTML_OMIT_CONTENTS // skip the main contents (for a standalone table of contents)
|
||||
HTML_COMPLETE_PAGE // generate a complete HTML page
|
||||
HTML_USE_XHTML // generate XHTML output instead of HTML
|
||||
HTML_USE_SMARTYPANTS // enable smart punctuation substitutions
|
||||
HTML_SMARTYPANTS_FRACTIONS // enable smart fractions (with HTML_USE_SMARTYPANTS)
|
||||
HTML_SMARTYPANTS_DASHES // enable smart dashes (with HTML_USE_SMARTYPANTS)
|
||||
HTML_SMARTYPANTS_LATEX_DASHES // enable LaTeX-style dashes (with HTML_USE_SMARTYPANTS and HTML_SMARTYPANTS_DASHES)
|
||||
HTML_SMARTYPANTS_ANGLED_QUOTES // enable angled double quotes (with HTML_USE_SMARTYPANTS) for double quotes rendering
|
||||
HTML_SMARTYPANTS_QUOTES_NBSP // enable "French guillemets" (with HTML_USE_SMARTYPANTS)
|
||||
HTML_FOOTNOTE_RETURN_LINKS // generate a link at the end of a footnote to return to the source
|
||||
)
|
||||
|
||||
var (
|
||||
alignments = []string{
|
||||
"left",
|
||||
"right",
|
||||
"center",
|
||||
}
|
||||
|
||||
// TODO: improve this regexp to catch all possible entities:
|
||||
htmlEntity = regexp.MustCompile(`&[a-z]{2,5};`)
|
||||
)
|
||||
|
||||
type HtmlRendererParameters struct {
|
||||
// Prepend this text to each relative URL.
|
||||
AbsolutePrefix string
|
||||
// Add this text to each footnote anchor, to ensure uniqueness.
|
||||
FootnoteAnchorPrefix string
|
||||
// Show this text inside the <a> tag for a footnote return link, if the
|
||||
// HTML_FOOTNOTE_RETURN_LINKS flag is enabled. If blank, the string
|
||||
// <sup>[return]</sup> is used.
|
||||
FootnoteReturnLinkContents string
|
||||
// If set, add this text to the front of each Header ID, to ensure
|
||||
// uniqueness.
|
||||
HeaderIDPrefix string
|
||||
// If set, add this text to the back of each Header ID, to ensure uniqueness.
|
||||
HeaderIDSuffix string
|
||||
}
|
||||
|
||||
// Html is a type that implements the Renderer interface for HTML output.
|
||||
//
|
||||
// Do not create this directly, instead use the HtmlRenderer function.
|
||||
type Html struct {
|
||||
flags int // HTML_* options
|
||||
closeTag string // how to end singleton tags: either " />" or ">"
|
||||
title string // document title
|
||||
css string // optional css file url (used with HTML_COMPLETE_PAGE)
|
||||
|
||||
parameters HtmlRendererParameters
|
||||
|
||||
// table of contents data
|
||||
tocMarker int
|
||||
headerCount int
|
||||
currentLevel int
|
||||
toc *bytes.Buffer
|
||||
|
||||
// Track header IDs to prevent ID collision in a single generation.
|
||||
headerIDs map[string]int
|
||||
|
||||
smartypants *smartypantsRenderer
|
||||
}
|
||||
|
||||
const (
|
||||
xhtmlClose = " />"
|
||||
htmlClose = ">"
|
||||
)
|
||||
|
||||
// HtmlRenderer creates and configures an Html object, which
|
||||
// satisfies the Renderer interface.
|
||||
//
|
||||
// flags is a set of HTML_* options ORed together.
|
||||
// title is the title of the document, and css is a URL for the document's
|
||||
// stylesheet.
|
||||
// title and css are only used when HTML_COMPLETE_PAGE is selected.
|
||||
func HtmlRenderer(flags int, title string, css string) Renderer {
|
||||
return HtmlRendererWithParameters(flags, title, css, HtmlRendererParameters{})
|
||||
}
|
||||
|
||||
func HtmlRendererWithParameters(flags int, title string,
|
||||
css string, renderParameters HtmlRendererParameters) Renderer {
|
||||
// configure the rendering engine
|
||||
closeTag := htmlClose
|
||||
if flags&HTML_USE_XHTML != 0 {
|
||||
closeTag = xhtmlClose
|
||||
}
|
||||
|
||||
if renderParameters.FootnoteReturnLinkContents == "" {
|
||||
renderParameters.FootnoteReturnLinkContents = `<sup>[return]</sup>`
|
||||
}
|
||||
|
||||
return &Html{
|
||||
flags: flags,
|
||||
closeTag: closeTag,
|
||||
title: title,
|
||||
css: css,
|
||||
parameters: renderParameters,
|
||||
|
||||
headerCount: 0,
|
||||
currentLevel: 0,
|
||||
toc: new(bytes.Buffer),
|
||||
|
||||
headerIDs: make(map[string]int),
|
||||
|
||||
smartypants: smartypants(flags),
|
||||
}
|
||||
}
|
||||
|
||||
// Using if statements is a bit faster than a switch statement. As the compiler
|
||||
// improves, this should be unnecessary this is only worthwhile because
|
||||
// attrEscape is the single largest CPU user in normal use.
|
||||
// Also tried using map, but that gave a ~3x slowdown.
|
||||
func escapeSingleChar(char byte) (string, bool) {
|
||||
if char == '"' {
|
||||
return """, true
|
||||
}
|
||||
if char == '&' {
|
||||
return "&", true
|
||||
}
|
||||
if char == '<' {
|
||||
return "<", true
|
||||
}
|
||||
if char == '>' {
|
||||
return ">", true
|
||||
}
|
||||
return "", false
|
||||
}
|
||||
|
||||
func attrEscape(out *bytes.Buffer, src []byte) {
|
||||
org := 0
|
||||
for i, ch := range src {
|
||||
if entity, ok := escapeSingleChar(ch); ok {
|
||||
if i > org {
|
||||
// copy all the normal characters since the last escape
|
||||
out.Write(src[org:i])
|
||||
}
|
||||
org = i + 1
|
||||
out.WriteString(entity)
|
||||
}
|
||||
}
|
||||
if org < len(src) {
|
||||
out.Write(src[org:])
|
||||
}
|
||||
}
|
||||
|
||||
func entityEscapeWithSkip(out *bytes.Buffer, src []byte, skipRanges [][]int) {
|
||||
end := 0
|
||||
for _, rang := range skipRanges {
|
||||
attrEscape(out, src[end:rang[0]])
|
||||
out.Write(src[rang[0]:rang[1]])
|
||||
end = rang[1]
|
||||
}
|
||||
attrEscape(out, src[end:])
|
||||
}
|
||||
|
||||
func (options *Html) GetFlags() int {
|
||||
return options.flags
|
||||
}
|
||||
|
||||
func (options *Html) TitleBlock(out *bytes.Buffer, text []byte) {
|
||||
text = bytes.TrimPrefix(text, []byte("% "))
|
||||
text = bytes.Replace(text, []byte("\n% "), []byte("\n"), -1)
|
||||
out.WriteString("<h1 class=\"title\">")
|
||||
out.Write(text)
|
||||
out.WriteString("\n</h1>")
|
||||
}
|
||||
|
||||
func (options *Html) Header(out *bytes.Buffer, text func() bool, level int, id string) {
|
||||
marker := out.Len()
|
||||
doubleSpace(out)
|
||||
|
||||
if id == "" && options.flags&HTML_TOC != 0 {
|
||||
id = fmt.Sprintf("toc_%d", options.headerCount)
|
||||
}
|
||||
|
||||
if id != "" {
|
||||
id = options.ensureUniqueHeaderID(id)
|
||||
|
||||
if options.parameters.HeaderIDPrefix != "" {
|
||||
id = options.parameters.HeaderIDPrefix + id
|
||||
}
|
||||
|
||||
if options.parameters.HeaderIDSuffix != "" {
|
||||
id = id + options.parameters.HeaderIDSuffix
|
||||
}
|
||||
|
||||
out.WriteString(fmt.Sprintf("<h%d id=\"%s\">", level, id))
|
||||
} else {
|
||||
out.WriteString(fmt.Sprintf("<h%d>", level))
|
||||
}
|
||||
|
||||
tocMarker := out.Len()
|
||||
if !text() {
|
||||
out.Truncate(marker)
|
||||
return
|
||||
}
|
||||
|
||||
// are we building a table of contents?
|
||||
if options.flags&HTML_TOC != 0 {
|
||||
options.TocHeaderWithAnchor(out.Bytes()[tocMarker:], level, id)
|
||||
}
|
||||
|
||||
out.WriteString(fmt.Sprintf("</h%d>\n", level))
|
||||
}
|
||||
|
||||
func (options *Html) BlockHtml(out *bytes.Buffer, text []byte) {
|
||||
if options.flags&HTML_SKIP_HTML != 0 {
|
||||
return
|
||||
}
|
||||
|
||||
doubleSpace(out)
|
||||
out.Write(text)
|
||||
out.WriteByte('\n')
|
||||
}
|
||||
|
||||
func (options *Html) HRule(out *bytes.Buffer) {
|
||||
doubleSpace(out)
|
||||
out.WriteString("<hr")
|
||||
out.WriteString(options.closeTag)
|
||||
out.WriteByte('\n')
|
||||
}
|
||||
|
||||
func (options *Html) BlockCode(out *bytes.Buffer, text []byte, info string) {
|
||||
doubleSpace(out)
|
||||
|
||||
endOfLang := strings.IndexAny(info, "\t ")
|
||||
if endOfLang < 0 {
|
||||
endOfLang = len(info)
|
||||
}
|
||||
lang := info[:endOfLang]
|
||||
if len(lang) == 0 || lang == "." {
|
||||
out.WriteString("<pre><code>")
|
||||
} else {
|
||||
out.WriteString("<pre><code class=\"language-")
|
||||
attrEscape(out, []byte(lang))
|
||||
out.WriteString("\">")
|
||||
}
|
||||
attrEscape(out, text)
|
||||
out.WriteString("</code></pre>\n")
|
||||
}
|
||||
|
||||
func (options *Html) BlockQuote(out *bytes.Buffer, text []byte) {
|
||||
doubleSpace(out)
|
||||
out.WriteString("<blockquote>\n")
|
||||
out.Write(text)
|
||||
out.WriteString("</blockquote>\n")
|
||||
}
|
||||
|
||||
func (options *Html) Table(out *bytes.Buffer, header []byte, body []byte, columnData []int) {
|
||||
doubleSpace(out)
|
||||
out.WriteString("<table>\n<thead>\n")
|
||||
out.Write(header)
|
||||
out.WriteString("</thead>\n\n<tbody>\n")
|
||||
out.Write(body)
|
||||
out.WriteString("</tbody>\n</table>\n")
|
||||
}
|
||||
|
||||
func (options *Html) TableRow(out *bytes.Buffer, text []byte) {
|
||||
doubleSpace(out)
|
||||
out.WriteString("<tr>\n")
|
||||
out.Write(text)
|
||||
out.WriteString("\n</tr>\n")
|
||||
}
|
||||
|
||||
func (options *Html) TableHeaderCell(out *bytes.Buffer, text []byte, align int) {
|
||||
doubleSpace(out)
|
||||
switch align {
|
||||
case TABLE_ALIGNMENT_LEFT:
|
||||
out.WriteString("<th align=\"left\">")
|
||||
case TABLE_ALIGNMENT_RIGHT:
|
||||
out.WriteString("<th align=\"right\">")
|
||||
case TABLE_ALIGNMENT_CENTER:
|
||||
out.WriteString("<th align=\"center\">")
|
||||
default:
|
||||
out.WriteString("<th>")
|
||||
}
|
||||
|
||||
out.Write(text)
|
||||
out.WriteString("</th>")
|
||||
}
|
||||
|
||||
func (options *Html) TableCell(out *bytes.Buffer, text []byte, align int) {
|
||||
doubleSpace(out)
|
||||
switch align {
|
||||
case TABLE_ALIGNMENT_LEFT:
|
||||
out.WriteString("<td align=\"left\">")
|
||||
case TABLE_ALIGNMENT_RIGHT:
|
||||
out.WriteString("<td align=\"right\">")
|
||||
case TABLE_ALIGNMENT_CENTER:
|
||||
out.WriteString("<td align=\"center\">")
|
||||
default:
|
||||
out.WriteString("<td>")
|
||||
}
|
||||
|
||||
out.Write(text)
|
||||
out.WriteString("</td>")
|
||||
}
|
||||
|
||||
func (options *Html) Footnotes(out *bytes.Buffer, text func() bool) {
|
||||
out.WriteString("<div class=\"footnotes\">\n")
|
||||
options.HRule(out)
|
||||
options.List(out, text, LIST_TYPE_ORDERED)
|
||||
out.WriteString("</div>\n")
|
||||
}
|
||||
|
||||
func (options *Html) FootnoteItem(out *bytes.Buffer, name, text []byte, flags int) {
|
||||
if flags&LIST_ITEM_CONTAINS_BLOCK != 0 || flags&LIST_ITEM_BEGINNING_OF_LIST != 0 {
|
||||
doubleSpace(out)
|
||||
}
|
||||
slug := slugify(name)
|
||||
out.WriteString(`<li id="`)
|
||||
out.WriteString(`fn:`)
|
||||
out.WriteString(options.parameters.FootnoteAnchorPrefix)
|
||||
out.Write(slug)
|
||||
out.WriteString(`">`)
|
||||
out.Write(text)
|
||||
if options.flags&HTML_FOOTNOTE_RETURN_LINKS != 0 {
|
||||
out.WriteString(` <a class="footnote-return" href="#`)
|
||||
out.WriteString(`fnref:`)
|
||||
out.WriteString(options.parameters.FootnoteAnchorPrefix)
|
||||
out.Write(slug)
|
||||
out.WriteString(`">`)
|
||||
out.WriteString(options.parameters.FootnoteReturnLinkContents)
|
||||
out.WriteString(`</a>`)
|
||||
}
|
||||
out.WriteString("</li>\n")
|
||||
}
|
||||
|
||||
func (options *Html) List(out *bytes.Buffer, text func() bool, flags int) {
|
||||
marker := out.Len()
|
||||
doubleSpace(out)
|
||||
|
||||
if flags&LIST_TYPE_DEFINITION != 0 {
|
||||
out.WriteString("<dl>")
|
||||
} else if flags&LIST_TYPE_ORDERED != 0 {
|
||||
out.WriteString("<ol>")
|
||||
} else {
|
||||
out.WriteString("<ul>")
|
||||
}
|
||||
if !text() {
|
||||
out.Truncate(marker)
|
||||
return
|
||||
}
|
||||
if flags&LIST_TYPE_DEFINITION != 0 {
|
||||
out.WriteString("</dl>\n")
|
||||
} else if flags&LIST_TYPE_ORDERED != 0 {
|
||||
out.WriteString("</ol>\n")
|
||||
} else {
|
||||
out.WriteString("</ul>\n")
|
||||
}
|
||||
}
|
||||
|
||||
func (options *Html) ListItem(out *bytes.Buffer, text []byte, flags int) {
|
||||
if (flags&LIST_ITEM_CONTAINS_BLOCK != 0 && flags&LIST_TYPE_DEFINITION == 0) ||
|
||||
flags&LIST_ITEM_BEGINNING_OF_LIST != 0 {
|
||||
doubleSpace(out)
|
||||
}
|
||||
if flags&LIST_TYPE_TERM != 0 {
|
||||
out.WriteString("<dt>")
|
||||
} else if flags&LIST_TYPE_DEFINITION != 0 {
|
||||
out.WriteString("<dd>")
|
||||
} else {
|
||||
out.WriteString("<li>")
|
||||
}
|
||||
out.Write(text)
|
||||
if flags&LIST_TYPE_TERM != 0 {
|
||||
out.WriteString("</dt>\n")
|
||||
} else if flags&LIST_TYPE_DEFINITION != 0 {
|
||||
out.WriteString("</dd>\n")
|
||||
} else {
|
||||
out.WriteString("</li>\n")
|
||||
}
|
||||
}
|
||||
|
||||
func (options *Html) Paragraph(out *bytes.Buffer, text func() bool) {
|
||||
marker := out.Len()
|
||||
doubleSpace(out)
|
||||
|
||||
out.WriteString("<p>")
|
||||
if !text() {
|
||||
out.Truncate(marker)
|
||||
return
|
||||
}
|
||||
out.WriteString("</p>\n")
|
||||
}
|
||||
|
||||
func (options *Html) AutoLink(out *bytes.Buffer, link []byte, kind int) {
|
||||
skipRanges := htmlEntity.FindAllIndex(link, -1)
|
||||
if options.flags&HTML_SAFELINK != 0 && !isSafeLink(link) && kind != LINK_TYPE_EMAIL {
|
||||
// mark it but don't link it if it is not a safe link: no smartypants
|
||||
out.WriteString("<tt>")
|
||||
entityEscapeWithSkip(out, link, skipRanges)
|
||||
out.WriteString("</tt>")
|
||||
return
|
||||
}
|
||||
|
||||
out.WriteString("<a href=\"")
|
||||
if kind == LINK_TYPE_EMAIL {
|
||||
out.WriteString("mailto:")
|
||||
} else {
|
||||
options.maybeWriteAbsolutePrefix(out, link)
|
||||
}
|
||||
|
||||
entityEscapeWithSkip(out, link, skipRanges)
|
||||
|
||||
var relAttrs []string
|
||||
if options.flags&HTML_NOFOLLOW_LINKS != 0 && !isRelativeLink(link) {
|
||||
relAttrs = append(relAttrs, "nofollow")
|
||||
}
|
||||
if options.flags&HTML_NOREFERRER_LINKS != 0 && !isRelativeLink(link) {
|
||||
relAttrs = append(relAttrs, "noreferrer")
|
||||
}
|
||||
if len(relAttrs) > 0 {
|
||||
out.WriteString(fmt.Sprintf("\" rel=\"%s", strings.Join(relAttrs, " ")))
|
||||
}
|
||||
|
||||
// blank target only add to external link
|
||||
if options.flags&HTML_HREF_TARGET_BLANK != 0 && !isRelativeLink(link) {
|
||||
out.WriteString("\" target=\"_blank")
|
||||
}
|
||||
|
||||
out.WriteString("\">")
|
||||
|
||||
// Pretty print: if we get an email address as
|
||||
// an actual URI, e.g. `mailto:foo@bar.com`, we don't
|
||||
// want to print the `mailto:` prefix
|
||||
switch {
|
||||
case bytes.HasPrefix(link, []byte("mailto://")):
|
||||
attrEscape(out, link[len("mailto://"):])
|
||||
case bytes.HasPrefix(link, []byte("mailto:")):
|
||||
attrEscape(out, link[len("mailto:"):])
|
||||
default:
|
||||
entityEscapeWithSkip(out, link, skipRanges)
|
||||
}
|
||||
|
||||
out.WriteString("</a>")
|
||||
}
|
||||
|
||||
func (options *Html) CodeSpan(out *bytes.Buffer, text []byte) {
|
||||
out.WriteString("<code>")
|
||||
attrEscape(out, text)
|
||||
out.WriteString("</code>")
|
||||
}
|
||||
|
||||
func (options *Html) DoubleEmphasis(out *bytes.Buffer, text []byte) {
|
||||
out.WriteString("<strong>")
|
||||
out.Write(text)
|
||||
out.WriteString("</strong>")
|
||||
}
|
||||
|
||||
func (options *Html) Emphasis(out *bytes.Buffer, text []byte) {
|
||||
if len(text) == 0 {
|
||||
return
|
||||
}
|
||||
out.WriteString("<em>")
|
||||
out.Write(text)
|
||||
out.WriteString("</em>")
|
||||
}
|
||||
|
||||
func (options *Html) maybeWriteAbsolutePrefix(out *bytes.Buffer, link []byte) {
|
||||
if options.parameters.AbsolutePrefix != "" && isRelativeLink(link) && link[0] != '.' {
|
||||
out.WriteString(options.parameters.AbsolutePrefix)
|
||||
if link[0] != '/' {
|
||||
out.WriteByte('/')
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (options *Html) Image(out *bytes.Buffer, link []byte, title []byte, alt []byte) {
|
||||
if options.flags&HTML_SKIP_IMAGES != 0 {
|
||||
return
|
||||
}
|
||||
|
||||
out.WriteString("<img src=\"")
|
||||
options.maybeWriteAbsolutePrefix(out, link)
|
||||
attrEscape(out, link)
|
||||
out.WriteString("\" alt=\"")
|
||||
if len(alt) > 0 {
|
||||
attrEscape(out, alt)
|
||||
}
|
||||
if len(title) > 0 {
|
||||
out.WriteString("\" title=\"")
|
||||
attrEscape(out, title)
|
||||
}
|
||||
|
||||
out.WriteByte('"')
|
||||
out.WriteString(options.closeTag)
|
||||
}
|
||||
|
||||
func (options *Html) LineBreak(out *bytes.Buffer) {
|
||||
out.WriteString("<br")
|
||||
out.WriteString(options.closeTag)
|
||||
out.WriteByte('\n')
|
||||
}
|
||||
|
||||
func (options *Html) Link(out *bytes.Buffer, link []byte, title []byte, content []byte) {
|
||||
if options.flags&HTML_SKIP_LINKS != 0 {
|
||||
// write the link text out but don't link it, just mark it with typewriter font
|
||||
out.WriteString("<tt>")
|
||||
attrEscape(out, content)
|
||||
out.WriteString("</tt>")
|
||||
return
|
||||
}
|
||||
|
||||
if options.flags&HTML_SAFELINK != 0 && !isSafeLink(link) {
|
||||
// write the link text out but don't link it, just mark it with typewriter font
|
||||
out.WriteString("<tt>")
|
||||
attrEscape(out, content)
|
||||
out.WriteString("</tt>")
|
||||
return
|
||||
}
|
||||
|
||||
out.WriteString("<a href=\"")
|
||||
options.maybeWriteAbsolutePrefix(out, link)
|
||||
attrEscape(out, link)
|
||||
if len(title) > 0 {
|
||||
out.WriteString("\" title=\"")
|
||||
attrEscape(out, title)
|
||||
}
|
||||
var relAttrs []string
|
||||
if options.flags&HTML_NOFOLLOW_LINKS != 0 && !isRelativeLink(link) {
|
||||
relAttrs = append(relAttrs, "nofollow")
|
||||
}
|
||||
if options.flags&HTML_NOREFERRER_LINKS != 0 && !isRelativeLink(link) {
|
||||
relAttrs = append(relAttrs, "noreferrer")
|
||||
}
|
||||
if len(relAttrs) > 0 {
|
||||
out.WriteString(fmt.Sprintf("\" rel=\"%s", strings.Join(relAttrs, " ")))
|
||||
}
|
||||
|
||||
// blank target only add to external link
|
||||
if options.flags&HTML_HREF_TARGET_BLANK != 0 && !isRelativeLink(link) {
|
||||
out.WriteString("\" target=\"_blank")
|
||||
}
|
||||
|
||||
out.WriteString("\">")
|
||||
out.Write(content)
|
||||
out.WriteString("</a>")
|
||||
return
|
||||
}
|
||||
|
||||
func (options *Html) RawHtmlTag(out *bytes.Buffer, text []byte) {
|
||||
if options.flags&HTML_SKIP_HTML != 0 {
|
||||
return
|
||||
}
|
||||
if options.flags&HTML_SKIP_STYLE != 0 && isHtmlTag(text, "style") {
|
||||
return
|
||||
}
|
||||
if options.flags&HTML_SKIP_LINKS != 0 && isHtmlTag(text, "a") {
|
||||
return
|
||||
}
|
||||
if options.flags&HTML_SKIP_IMAGES != 0 && isHtmlTag(text, "img") {
|
||||
return
|
||||
}
|
||||
out.Write(text)
|
||||
}
|
||||
|
||||
func (options *Html) TripleEmphasis(out *bytes.Buffer, text []byte) {
|
||||
out.WriteString("<strong><em>")
|
||||
out.Write(text)
|
||||
out.WriteString("</em></strong>")
|
||||
}
|
||||
|
||||
func (options *Html) StrikeThrough(out *bytes.Buffer, text []byte) {
|
||||
out.WriteString("<del>")
|
||||
out.Write(text)
|
||||
out.WriteString("</del>")
|
||||
}
|
||||
|
||||
func (options *Html) FootnoteRef(out *bytes.Buffer, ref []byte, id int) {
|
||||
slug := slugify(ref)
|
||||
out.WriteString(`<sup class="footnote-ref" id="`)
|
||||
out.WriteString(`fnref:`)
|
||||
out.WriteString(options.parameters.FootnoteAnchorPrefix)
|
||||
out.Write(slug)
|
||||
out.WriteString(`"><a href="#`)
|
||||
out.WriteString(`fn:`)
|
||||
out.WriteString(options.parameters.FootnoteAnchorPrefix)
|
||||
out.Write(slug)
|
||||
out.WriteString(`">`)
|
||||
out.WriteString(strconv.Itoa(id))
|
||||
out.WriteString(`</a></sup>`)
|
||||
}
|
||||
|
||||
func (options *Html) Entity(out *bytes.Buffer, entity []byte) {
|
||||
out.Write(entity)
|
||||
}
|
||||
|
||||
func (options *Html) NormalText(out *bytes.Buffer, text []byte) {
|
||||
if options.flags&HTML_USE_SMARTYPANTS != 0 {
|
||||
options.Smartypants(out, text)
|
||||
} else {
|
||||
attrEscape(out, text)
|
||||
}
|
||||
}
|
||||
|
||||
func (options *Html) Smartypants(out *bytes.Buffer, text []byte) {
|
||||
smrt := smartypantsData{false, false}
|
||||
|
||||
// first do normal entity escaping
|
||||
var escaped bytes.Buffer
|
||||
attrEscape(&escaped, text)
|
||||
text = escaped.Bytes()
|
||||
|
||||
mark := 0
|
||||
for i := 0; i < len(text); i++ {
|
||||
if action := options.smartypants[text[i]]; action != nil {
|
||||
if i > mark {
|
||||
out.Write(text[mark:i])
|
||||
}
|
||||
|
||||
previousChar := byte(0)
|
||||
if i > 0 {
|
||||
previousChar = text[i-1]
|
||||
}
|
||||
i += action(out, &smrt, previousChar, text[i:])
|
||||
mark = i + 1
|
||||
}
|
||||
}
|
||||
|
||||
if mark < len(text) {
|
||||
out.Write(text[mark:])
|
||||
}
|
||||
}
|
||||
|
||||
func (options *Html) DocumentHeader(out *bytes.Buffer) {
|
||||
if options.flags&HTML_COMPLETE_PAGE == 0 {
|
||||
return
|
||||
}
|
||||
|
||||
ending := ""
|
||||
if options.flags&HTML_USE_XHTML != 0 {
|
||||
out.WriteString("<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" ")
|
||||
out.WriteString("\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n")
|
||||
out.WriteString("<html xmlns=\"http://www.w3.org/1999/xhtml\">\n")
|
||||
ending = " /"
|
||||
} else {
|
||||
out.WriteString("<!DOCTYPE html>\n")
|
||||
out.WriteString("<html>\n")
|
||||
}
|
||||
out.WriteString("<head>\n")
|
||||
out.WriteString(" <title>")
|
||||
options.NormalText(out, []byte(options.title))
|
||||
out.WriteString("</title>\n")
|
||||
out.WriteString(" <meta name=\"GENERATOR\" content=\"Blackfriday Markdown Processor v")
|
||||
out.WriteString(VERSION)
|
||||
out.WriteString("\"")
|
||||
out.WriteString(ending)
|
||||
out.WriteString(">\n")
|
||||
out.WriteString(" <meta charset=\"utf-8\"")
|
||||
out.WriteString(ending)
|
||||
out.WriteString(">\n")
|
||||
if options.css != "" {
|
||||
out.WriteString(" <link rel=\"stylesheet\" type=\"text/css\" href=\"")
|
||||
attrEscape(out, []byte(options.css))
|
||||
out.WriteString("\"")
|
||||
out.WriteString(ending)
|
||||
out.WriteString(">\n")
|
||||
}
|
||||
out.WriteString("</head>\n")
|
||||
out.WriteString("<body>\n")
|
||||
|
||||
options.tocMarker = out.Len()
|
||||
}
|
||||
|
||||
func (options *Html) DocumentFooter(out *bytes.Buffer) {
|
||||
// finalize and insert the table of contents
|
||||
if options.flags&HTML_TOC != 0 {
|
||||
options.TocFinalize()
|
||||
|
||||
// now we have to insert the table of contents into the document
|
||||
var temp bytes.Buffer
|
||||
|
||||
// start by making a copy of everything after the document header
|
||||
temp.Write(out.Bytes()[options.tocMarker:])
|
||||
|
||||
// now clear the copied material from the main output buffer
|
||||
out.Truncate(options.tocMarker)
|
||||
|
||||
// corner case spacing issue
|
||||
if options.flags&HTML_COMPLETE_PAGE != 0 {
|
||||
out.WriteByte('\n')
|
||||
}
|
||||
|
||||
// insert the table of contents
|
||||
out.WriteString("<nav>\n")
|
||||
out.Write(options.toc.Bytes())
|
||||
out.WriteString("</nav>\n")
|
||||
|
||||
// corner case spacing issue
|
||||
if options.flags&HTML_COMPLETE_PAGE == 0 && options.flags&HTML_OMIT_CONTENTS == 0 {
|
||||
out.WriteByte('\n')
|
||||
}
|
||||
|
||||
// write out everything that came after it
|
||||
if options.flags&HTML_OMIT_CONTENTS == 0 {
|
||||
out.Write(temp.Bytes())
|
||||
}
|
||||
}
|
||||
|
||||
if options.flags&HTML_COMPLETE_PAGE != 0 {
|
||||
out.WriteString("\n</body>\n")
|
||||
out.WriteString("</html>\n")
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
func (options *Html) TocHeaderWithAnchor(text []byte, level int, anchor string) {
|
||||
for level > options.currentLevel {
|
||||
switch {
|
||||
case bytes.HasSuffix(options.toc.Bytes(), []byte("</li>\n")):
|
||||
// this sublist can nest underneath a header
|
||||
size := options.toc.Len()
|
||||
options.toc.Truncate(size - len("</li>\n"))
|
||||
|
||||
case options.currentLevel > 0:
|
||||
options.toc.WriteString("<li>")
|
||||
}
|
||||
if options.toc.Len() > 0 {
|
||||
options.toc.WriteByte('\n')
|
||||
}
|
||||
options.toc.WriteString("<ul>\n")
|
||||
options.currentLevel++
|
||||
}
|
||||
|
||||
for level < options.currentLevel {
|
||||
options.toc.WriteString("</ul>")
|
||||
if options.currentLevel > 1 {
|
||||
options.toc.WriteString("</li>\n")
|
||||
}
|
||||
options.currentLevel--
|
||||
}
|
||||
|
||||
options.toc.WriteString("<li><a href=\"#")
|
||||
if anchor != "" {
|
||||
options.toc.WriteString(anchor)
|
||||
} else {
|
||||
options.toc.WriteString("toc_")
|
||||
options.toc.WriteString(strconv.Itoa(options.headerCount))
|
||||
}
|
||||
options.toc.WriteString("\">")
|
||||
options.headerCount++
|
||||
|
||||
options.toc.Write(text)
|
||||
|
||||
options.toc.WriteString("</a></li>\n")
|
||||
}
|
||||
|
||||
func (options *Html) TocHeader(text []byte, level int) {
|
||||
options.TocHeaderWithAnchor(text, level, "")
|
||||
}
|
||||
|
||||
func (options *Html) TocFinalize() {
|
||||
for options.currentLevel > 1 {
|
||||
options.toc.WriteString("</ul></li>\n")
|
||||
options.currentLevel--
|
||||
}
|
||||
|
||||
if options.currentLevel > 0 {
|
||||
options.toc.WriteString("</ul>\n")
|
||||
}
|
||||
}
|
||||
|
||||
func isHtmlTag(tag []byte, tagname string) bool {
|
||||
found, _ := findHtmlTagPos(tag, tagname)
|
||||
return found
|
||||
}
|
||||
|
||||
// Look for a character, but ignore it when it's in any kind of quotes, it
|
||||
// might be JavaScript
|
||||
func skipUntilCharIgnoreQuotes(html []byte, start int, char byte) int {
|
||||
inSingleQuote := false
|
||||
inDoubleQuote := false
|
||||
inGraveQuote := false
|
||||
i := start
|
||||
for i < len(html) {
|
||||
switch {
|
||||
case html[i] == char && !inSingleQuote && !inDoubleQuote && !inGraveQuote:
|
||||
return i
|
||||
case html[i] == '\'':
|
||||
inSingleQuote = !inSingleQuote
|
||||
case html[i] == '"':
|
||||
inDoubleQuote = !inDoubleQuote
|
||||
case html[i] == '`':
|
||||
inGraveQuote = !inGraveQuote
|
||||
}
|
||||
i++
|
||||
}
|
||||
return start
|
||||
}
|
||||
|
||||
func findHtmlTagPos(tag []byte, tagname string) (bool, int) {
|
||||
i := 0
|
||||
if i < len(tag) && tag[0] != '<' {
|
||||
return false, -1
|
||||
}
|
||||
i++
|
||||
i = skipSpace(tag, i)
|
||||
|
||||
if i < len(tag) && tag[i] == '/' {
|
||||
i++
|
||||
}
|
||||
|
||||
i = skipSpace(tag, i)
|
||||
j := 0
|
||||
for ; i < len(tag); i, j = i+1, j+1 {
|
||||
if j >= len(tagname) {
|
||||
break
|
||||
}
|
||||
|
||||
if strings.ToLower(string(tag[i]))[0] != tagname[j] {
|
||||
return false, -1
|
||||
}
|
||||
}
|
||||
|
||||
if i == len(tag) {
|
||||
return false, -1
|
||||
}
|
||||
|
||||
rightAngle := skipUntilCharIgnoreQuotes(tag, i, '>')
|
||||
if rightAngle > i {
|
||||
return true, rightAngle
|
||||
}
|
||||
|
||||
return false, -1
|
||||
}
|
||||
|
||||
func skipUntilChar(text []byte, start int, char byte) int {
|
||||
i := start
|
||||
for i < len(text) && text[i] != char {
|
||||
i++
|
||||
}
|
||||
return i
|
||||
}
|
||||
|
||||
func skipSpace(tag []byte, i int) int {
|
||||
for i < len(tag) && isspace(tag[i]) {
|
||||
i++
|
||||
}
|
||||
return i
|
||||
}
|
||||
|
||||
func skipChar(data []byte, start int, char byte) int {
|
||||
i := start
|
||||
for i < len(data) && data[i] == char {
|
||||
i++
|
||||
}
|
||||
return i
|
||||
}
|
||||
|
||||
func doubleSpace(out *bytes.Buffer) {
|
||||
if out.Len() > 0 {
|
||||
out.WriteByte('\n')
|
||||
}
|
||||
}
|
||||
|
||||
func isRelativeLink(link []byte) (yes bool) {
|
||||
// a tag begin with '#'
|
||||
if link[0] == '#' {
|
||||
return true
|
||||
}
|
||||
|
||||
// link begin with '/' but not '//', the second maybe a protocol relative link
|
||||
if len(link) >= 2 && link[0] == '/' && link[1] != '/' {
|
||||
return true
|
||||
}
|
||||
|
||||
// only the root '/'
|
||||
if len(link) == 1 && link[0] == '/' {
|
||||
return true
|
||||
}
|
||||
|
||||
// current directory : begin with "./"
|
||||
if bytes.HasPrefix(link, []byte("./")) {
|
||||
return true
|
||||
}
|
||||
|
||||
// parent directory : begin with "../"
|
||||
if bytes.HasPrefix(link, []byte("../")) {
|
||||
return true
|
||||
}
|
||||
|
||||
return false
|
||||
}
|
||||
|
||||
func (options *Html) ensureUniqueHeaderID(id string) string {
|
||||
for count, found := options.headerIDs[id]; found; count, found = options.headerIDs[id] {
|
||||
tmp := fmt.Sprintf("%s-%d", id, count+1)
|
||||
|
||||
if _, tmpFound := options.headerIDs[tmp]; !tmpFound {
|
||||
options.headerIDs[id] = count + 1
|
||||
id = tmp
|
||||
} else {
|
||||
id = id + "-1"
|
||||
}
|
||||
}
|
||||
|
||||
if _, found := options.headerIDs[id]; !found {
|
||||
options.headerIDs[id] = 0
|
||||
}
|
||||
|
||||
return id
|
||||
}
|
||||
@ -1,334 +0,0 @@
|
||||
//
|
||||
// Blackfriday Markdown Processor
|
||||
// Available at http://github.com/russross/blackfriday
|
||||
//
|
||||
// Copyright © 2011 Russ Ross <russ@russross.com>.
|
||||
// Distributed under the Simplified BSD License.
|
||||
// See README.md for details.
|
||||
//
|
||||
|
||||
//
|
||||
//
|
||||
// LaTeX rendering backend
|
||||
//
|
||||
//
|
||||
|
||||
package blackfriday
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// Latex is a type that implements the Renderer interface for LaTeX output.
|
||||
//
|
||||
// Do not create this directly, instead use the LatexRenderer function.
|
||||
type Latex struct {
|
||||
}
|
||||
|
||||
// LatexRenderer creates and configures a Latex object, which
|
||||
// satisfies the Renderer interface.
|
||||
//
|
||||
// flags is a set of LATEX_* options ORed together (currently no such options
|
||||
// are defined).
|
||||
func LatexRenderer(flags int) Renderer {
|
||||
return &Latex{}
|
||||
}
|
||||
|
||||
func (options *Latex) GetFlags() int {
|
||||
return 0
|
||||
}
|
||||
|
||||
// render code chunks using verbatim, or listings if we have a language
|
||||
func (options *Latex) BlockCode(out *bytes.Buffer, text []byte, info string) {
|
||||
if info == "" {
|
||||
out.WriteString("\n\\begin{verbatim}\n")
|
||||
} else {
|
||||
lang := strings.Fields(info)[0]
|
||||
out.WriteString("\n\\begin{lstlisting}[language=")
|
||||
out.WriteString(lang)
|
||||
out.WriteString("]\n")
|
||||
}
|
||||
out.Write(text)
|
||||
if info == "" {
|
||||
out.WriteString("\n\\end{verbatim}\n")
|
||||
} else {
|
||||
out.WriteString("\n\\end{lstlisting}\n")
|
||||
}
|
||||
}
|
||||
|
||||
func (options *Latex) TitleBlock(out *bytes.Buffer, text []byte) {
|
||||
|
||||
}
|
||||
|
||||
func (options *Latex) BlockQuote(out *bytes.Buffer, text []byte) {
|
||||
out.WriteString("\n\\begin{quotation}\n")
|
||||
out.Write(text)
|
||||
out.WriteString("\n\\end{quotation}\n")
|
||||
}
|
||||
|
||||
func (options *Latex) BlockHtml(out *bytes.Buffer, text []byte) {
|
||||
// a pretty lame thing to do...
|
||||
out.WriteString("\n\\begin{verbatim}\n")
|
||||
out.Write(text)
|
||||
out.WriteString("\n\\end{verbatim}\n")
|
||||
}
|
||||
|
||||
func (options *Latex) Header(out *bytes.Buffer, text func() bool, level int, id string) {
|
||||
marker := out.Len()
|
||||
|
||||
switch level {
|
||||
case 1:
|
||||
out.WriteString("\n\\section{")
|
||||
case 2:
|
||||
out.WriteString("\n\\subsection{")
|
||||
case 3:
|
||||
out.WriteString("\n\\subsubsection{")
|
||||
case 4:
|
||||
out.WriteString("\n\\paragraph{")
|
||||
case 5:
|
||||
out.WriteString("\n\\subparagraph{")
|
||||
case 6:
|
||||
out.WriteString("\n\\textbf{")
|
||||
}
|
||||
if !text() {
|
||||
out.Truncate(marker)
|
||||
return
|
||||
}
|
||||
out.WriteString("}\n")
|
||||
}
|
||||
|
||||
func (options *Latex) HRule(out *bytes.Buffer) {
|
||||
out.WriteString("\n\\HRule\n")
|
||||
}
|
||||
|
||||
func (options *Latex) List(out *bytes.Buffer, text func() bool, flags int) {
|
||||
marker := out.Len()
|
||||
if flags&LIST_TYPE_ORDERED != 0 {
|
||||
out.WriteString("\n\\begin{enumerate}\n")
|
||||
} else {
|
||||
out.WriteString("\n\\begin{itemize}\n")
|
||||
}
|
||||
if !text() {
|
||||
out.Truncate(marker)
|
||||
return
|
||||
}
|
||||
if flags&LIST_TYPE_ORDERED != 0 {
|
||||
out.WriteString("\n\\end{enumerate}\n")
|
||||
} else {
|
||||
out.WriteString("\n\\end{itemize}\n")
|
||||
}
|
||||
}
|
||||
|
||||
func (options *Latex) ListItem(out *bytes.Buffer, text []byte, flags int) {
|
||||
out.WriteString("\n\\item ")
|
||||
out.Write(text)
|
||||
}
|
||||
|
||||
func (options *Latex) Paragraph(out *bytes.Buffer, text func() bool) {
|
||||
marker := out.Len()
|
||||
out.WriteString("\n")
|
||||
if !text() {
|
||||
out.Truncate(marker)
|
||||
return
|
||||
}
|
||||
out.WriteString("\n")
|
||||
}
|
||||
|
||||
func (options *Latex) Table(out *bytes.Buffer, header []byte, body []byte, columnData []int) {
|
||||
out.WriteString("\n\\begin{tabular}{")
|
||||
for _, elt := range columnData {
|
||||
switch elt {
|
||||
case TABLE_ALIGNMENT_LEFT:
|
||||
out.WriteByte('l')
|
||||
case TABLE_ALIGNMENT_RIGHT:
|
||||
out.WriteByte('r')
|
||||
default:
|
||||
out.WriteByte('c')
|
||||
}
|
||||
}
|
||||
out.WriteString("}\n")
|
||||
out.Write(header)
|
||||
out.WriteString(" \\\\\n\\hline\n")
|
||||
out.Write(body)
|
||||
out.WriteString("\n\\end{tabular}\n")
|
||||
}
|
||||
|
||||
func (options *Latex) TableRow(out *bytes.Buffer, text []byte) {
|
||||
if out.Len() > 0 {
|
||||
out.WriteString(" \\\\\n")
|
||||
}
|
||||
out.Write(text)
|
||||
}
|
||||
|
||||
func (options *Latex) TableHeaderCell(out *bytes.Buffer, text []byte, align int) {
|
||||
if out.Len() > 0 {
|
||||
out.WriteString(" & ")
|
||||
}
|
||||
out.Write(text)
|
||||
}
|
||||
|
||||
func (options *Latex) TableCell(out *bytes.Buffer, text []byte, align int) {
|
||||
if out.Len() > 0 {
|
||||
out.WriteString(" & ")
|
||||
}
|
||||
out.Write(text)
|
||||
}
|
||||
|
||||
// TODO: this
|
||||
func (options *Latex) Footnotes(out *bytes.Buffer, text func() bool) {
|
||||
|
||||
}
|
||||
|
||||
func (options *Latex) FootnoteItem(out *bytes.Buffer, name, text []byte, flags int) {
|
||||
|
||||
}
|
||||
|
||||
func (options *Latex) AutoLink(out *bytes.Buffer, link []byte, kind int) {
|
||||
out.WriteString("\\href{")
|
||||
if kind == LINK_TYPE_EMAIL {
|
||||
out.WriteString("mailto:")
|
||||
}
|
||||
out.Write(link)
|
||||
out.WriteString("}{")
|
||||
out.Write(link)
|
||||
out.WriteString("}")
|
||||
}
|
||||
|
||||
func (options *Latex) CodeSpan(out *bytes.Buffer, text []byte) {
|
||||
out.WriteString("\\texttt{")
|
||||
escapeSpecialChars(out, text)
|
||||
out.WriteString("}")
|
||||
}
|
||||
|
||||
func (options *Latex) DoubleEmphasis(out *bytes.Buffer, text []byte) {
|
||||
out.WriteString("\\textbf{")
|
||||
out.Write(text)
|
||||
out.WriteString("}")
|
||||
}
|
||||
|
||||
func (options *Latex) Emphasis(out *bytes.Buffer, text []byte) {
|
||||
out.WriteString("\\textit{")
|
||||
out.Write(text)
|
||||
out.WriteString("}")
|
||||
}
|
||||
|
||||
func (options *Latex) Image(out *bytes.Buffer, link []byte, title []byte, alt []byte) {
|
||||
if bytes.HasPrefix(link, []byte("http://")) || bytes.HasPrefix(link, []byte("https://")) {
|
||||
// treat it like a link
|
||||
out.WriteString("\\href{")
|
||||
out.Write(link)
|
||||
out.WriteString("}{")
|
||||
out.Write(alt)
|
||||
out.WriteString("}")
|
||||
} else {
|
||||
out.WriteString("\\includegraphics{")
|
||||
out.Write(link)
|
||||
out.WriteString("}")
|
||||
}
|
||||
}
|
||||
|
||||
func (options *Latex) LineBreak(out *bytes.Buffer) {
|
||||
out.WriteString(" \\\\\n")
|
||||
}
|
||||
|
||||
func (options *Latex) Link(out *bytes.Buffer, link []byte, title []byte, content []byte) {
|
||||
out.WriteString("\\href{")
|
||||
out.Write(link)
|
||||
out.WriteString("}{")
|
||||
out.Write(content)
|
||||
out.WriteString("}")
|
||||
}
|
||||
|
||||
func (options *Latex) RawHtmlTag(out *bytes.Buffer, tag []byte) {
|
||||
}
|
||||
|
||||
func (options *Latex) TripleEmphasis(out *bytes.Buffer, text []byte) {
|
||||
out.WriteString("\\textbf{\\textit{")
|
||||
out.Write(text)
|
||||
out.WriteString("}}")
|
||||
}
|
||||
|
||||
func (options *Latex) StrikeThrough(out *bytes.Buffer, text []byte) {
|
||||
out.WriteString("\\sout{")
|
||||
out.Write(text)
|
||||
out.WriteString("}")
|
||||
}
|
||||
|
||||
// TODO: this
|
||||
func (options *Latex) FootnoteRef(out *bytes.Buffer, ref []byte, id int) {
|
||||
|
||||
}
|
||||
|
||||
func needsBackslash(c byte) bool {
|
||||
for _, r := range []byte("_{}%$&\\~#") {
|
||||
if c == r {
|
||||
return true
|
||||
}
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
func escapeSpecialChars(out *bytes.Buffer, text []byte) {
|
||||
for i := 0; i < len(text); i++ {
|
||||
// directly copy normal characters
|
||||
org := i
|
||||
|
||||
for i < len(text) && !needsBackslash(text[i]) {
|
||||
i++
|
||||
}
|
||||
if i > org {
|
||||
out.Write(text[org:i])
|
||||
}
|
||||
|
||||
// escape a character
|
||||
if i >= len(text) {
|
||||
break
|
||||
}
|
||||
out.WriteByte('\\')
|
||||
out.WriteByte(text[i])
|
||||
}
|
||||
}
|
||||
|
||||
func (options *Latex) Entity(out *bytes.Buffer, entity []byte) {
|
||||
// TODO: convert this into a unicode character or something
|
||||
out.Write(entity)
|
||||
}
|
||||
|
||||
func (options *Latex) NormalText(out *bytes.Buffer, text []byte) {
|
||||
escapeSpecialChars(out, text)
|
||||
}
|
||||
|
||||
// header and footer
|
||||
func (options *Latex) DocumentHeader(out *bytes.Buffer) {
|
||||
out.WriteString("\\documentclass{article}\n")
|
||||
out.WriteString("\n")
|
||||
out.WriteString("\\usepackage{graphicx}\n")
|
||||
out.WriteString("\\usepackage{listings}\n")
|
||||
out.WriteString("\\usepackage[margin=1in]{geometry}\n")
|
||||
out.WriteString("\\usepackage[utf8]{inputenc}\n")
|
||||
out.WriteString("\\usepackage{verbatim}\n")
|
||||
out.WriteString("\\usepackage[normalem]{ulem}\n")
|
||||
out.WriteString("\\usepackage{hyperref}\n")
|
||||
out.WriteString("\n")
|
||||
out.WriteString("\\hypersetup{colorlinks,%\n")
|
||||
out.WriteString(" citecolor=black,%\n")
|
||||
out.WriteString(" filecolor=black,%\n")
|
||||
out.WriteString(" linkcolor=black,%\n")
|
||||
out.WriteString(" urlcolor=black,%\n")
|
||||
out.WriteString(" pdfstartview=FitH,%\n")
|
||||
out.WriteString(" breaklinks=true,%\n")
|
||||
out.WriteString(" pdfauthor={Blackfriday Markdown Processor v")
|
||||
out.WriteString(VERSION)
|
||||
out.WriteString("}}\n")
|
||||
out.WriteString("\n")
|
||||
out.WriteString("\\newcommand{\\HRule}{\\rule{\\linewidth}{0.5mm}}\n")
|
||||
out.WriteString("\\addtolength{\\parskip}{0.5\\baselineskip}\n")
|
||||
out.WriteString("\\parindent=0pt\n")
|
||||
out.WriteString("\n")
|
||||
out.WriteString("\\begin{document}\n")
|
||||
}
|
||||
|
||||
func (options *Latex) DocumentFooter(out *bytes.Buffer) {
|
||||
out.WriteString("\n\\end{document}\n")
|
||||
}
|
||||
@ -1,30 +1,17 @@
|
||||
sudo: false
|
||||
language: go
|
||||
go:
|
||||
- 1.5.4
|
||||
- 1.6.2
|
||||
- "1.10.x"
|
||||
- "1.11.x"
|
||||
- tip
|
||||
matrix:
|
||||
include:
|
||||
- go: 1.2.2
|
||||
script:
|
||||
- go get -t -v ./...
|
||||
- go test -v -race ./...
|
||||
- go: 1.3.3
|
||||
script:
|
||||
- go get -t -v ./...
|
||||
- go test -v -race ./...
|
||||
- go: 1.4.3
|
||||
script:
|
||||
- go get -t -v ./...
|
||||
- go test -v -race ./...
|
||||
fast_finish: true
|
||||
allow_failures:
|
||||
- go: tip
|
||||
fast_finish: true
|
||||
install:
|
||||
- # Do nothing. This is needed to prevent default install action "go get -t -v ./..." from happening here (we want it to happen inside script step).
|
||||
script:
|
||||
- go get -t -v ./...
|
||||
- diff -u <(echo -n) <(gofmt -d -s .)
|
||||
- go tool vet .
|
||||
- go test -v -race ./...
|
||||
- go test -v ./...
|
||||
File diff suppressed because it is too large
Load Diff
@ -0,0 +1,18 @@
|
||||
// Package blackfriday is a markdown processor.
|
||||
//
|
||||
// It translates plain text with simple formatting rules into an AST, which can
|
||||
// then be further processed to HTML (provided by Blackfriday itself) or other
|
||||
// formats (provided by the community).
|
||||
//
|
||||
// The simplest way to invoke Blackfriday is to call the Run function. It will
|
||||
// take a text input and produce a text output in HTML (or other format).
|
||||
//
|
||||
// A slightly more sophisticated way to use Blackfriday is to create a Markdown
|
||||
// processor and to call Parse, which returns a syntax tree for the input
|
||||
// document. You can leverage Blackfriday's parsing for content extraction from
|
||||
// markdown documents. You can assign a custom renderer and set various options
|
||||
// to the Markdown processor.
|
||||
//
|
||||
// If you're interested in calling Blackfriday from command line, see
|
||||
// https://github.com/russross/blackfriday-tool.
|
||||
package blackfriday
|
||||
@ -0,0 +1,34 @@
|
||||
package blackfriday
|
||||
|
||||
import (
|
||||
"html"
|
||||
"io"
|
||||
)
|
||||
|
||||
var htmlEscaper = [256][]byte{
|
||||
'&': []byte("&"),
|
||||
'<': []byte("<"),
|
||||
'>': []byte(">"),
|
||||
'"': []byte("""),
|
||||
}
|
||||
|
||||
func escapeHTML(w io.Writer, s []byte) {
|
||||
var start, end int
|
||||
for end < len(s) {
|
||||
escSeq := htmlEscaper[s[end]]
|
||||
if escSeq != nil {
|
||||
w.Write(s[start:end])
|
||||
w.Write(escSeq)
|
||||
start = end + 1
|
||||
}
|
||||
end++
|
||||
}
|
||||
if start < len(s) && end <= len(s) {
|
||||
w.Write(s[start:end])
|
||||
}
|
||||
}
|
||||
|
||||
func escLink(w io.Writer, text []byte) {
|
||||
unesc := html.UnescapeString(string(text))
|
||||
escapeHTML(w, []byte(unesc))
|
||||
}
|
||||
@ -0,0 +1 @@
|
||||
module github.com/russross/blackfriday/v2
|
||||
@ -0,0 +1,949 @@
|
||||
//
|
||||
// Blackfriday Markdown Processor
|
||||
// Available at http://github.com/russross/blackfriday
|
||||
//
|
||||
// Copyright © 2011 Russ Ross <russ@russross.com>.
|
||||
// Distributed under the Simplified BSD License.
|
||||
// See README.md for details.
|
||||
//
|
||||
|
||||
//
|
||||
//
|
||||
// HTML rendering backend
|
||||
//
|
||||
//
|
||||
|
||||
package blackfriday
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"fmt"
|
||||
"io"
|
||||
"regexp"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// HTMLFlags control optional behavior of HTML renderer.
|
||||
type HTMLFlags int
|
||||
|
||||
// HTML renderer configuration options.
|
||||
const (
|
||||
HTMLFlagsNone HTMLFlags = 0
|
||||
SkipHTML HTMLFlags = 1 << iota // Skip preformatted HTML blocks
|
||||
SkipImages // Skip embedded images
|
||||
SkipLinks // Skip all links
|
||||
Safelink // Only link to trusted protocols
|
||||
NofollowLinks // Only link with rel="nofollow"
|
||||
NoreferrerLinks // Only link with rel="noreferrer"
|
||||
NoopenerLinks // Only link with rel="noopener"
|
||||
HrefTargetBlank // Add a blank target
|
||||
CompletePage // Generate a complete HTML page
|
||||
UseXHTML // Generate XHTML output instead of HTML
|
||||
FootnoteReturnLinks // Generate a link at the end of a footnote to return to the source
|
||||
Smartypants // Enable smart punctuation substitutions
|
||||
SmartypantsFractions // Enable smart fractions (with Smartypants)
|
||||
SmartypantsDashes // Enable smart dashes (with Smartypants)
|
||||
SmartypantsLatexDashes // Enable LaTeX-style dashes (with Smartypants)
|
||||
SmartypantsAngledQuotes // Enable angled double quotes (with Smartypants) for double quotes rendering
|
||||
SmartypantsQuotesNBSP // Enable « French guillemets » (with Smartypants)
|
||||
TOC // Generate a table of contents
|
||||
)
|
||||
|
||||
var (
|
||||
htmlTagRe = regexp.MustCompile("(?i)^" + htmlTag)
|
||||
)
|
||||
|
||||
const (
|
||||
htmlTag = "(?:" + openTag + "|" + closeTag + "|" + htmlComment + "|" +
|
||||
processingInstruction + "|" + declaration + "|" + cdata + ")"
|
||||
closeTag = "</" + tagName + "\\s*[>]"
|
||||
openTag = "<" + tagName + attribute + "*" + "\\s*/?>"
|
||||
attribute = "(?:" + "\\s+" + attributeName + attributeValueSpec + "?)"
|
||||
attributeValue = "(?:" + unquotedValue + "|" + singleQuotedValue + "|" + doubleQuotedValue + ")"
|
||||
attributeValueSpec = "(?:" + "\\s*=" + "\\s*" + attributeValue + ")"
|
||||
attributeName = "[a-zA-Z_:][a-zA-Z0-9:._-]*"
|
||||
cdata = "<!\\[CDATA\\[[\\s\\S]*?\\]\\]>"
|
||||
declaration = "<![A-Z]+" + "\\s+[^>]*>"
|
||||
doubleQuotedValue = "\"[^\"]*\""
|
||||
htmlComment = "<!---->|<!--(?:-?[^>-])(?:-?[^-])*-->"
|
||||
processingInstruction = "[<][?].*?[?][>]"
|
||||
singleQuotedValue = "'[^']*'"
|
||||
tagName = "[A-Za-z][A-Za-z0-9-]*"
|
||||
unquotedValue = "[^\"'=<>`\\x00-\\x20]+"
|
||||
)
|
||||
|
||||
// HTMLRendererParameters is a collection of supplementary parameters tweaking
|
||||
// the behavior of various parts of HTML renderer.
|
||||
type HTMLRendererParameters struct {
|
||||
// Prepend this text to each relative URL.
|
||||
AbsolutePrefix string
|
||||
// Add this text to each footnote anchor, to ensure uniqueness.
|
||||
FootnoteAnchorPrefix string
|
||||
// Show this text inside the <a> tag for a footnote return link, if the
|
||||
// HTML_FOOTNOTE_RETURN_LINKS flag is enabled. If blank, the string
|
||||
// <sup>[return]</sup> is used.
|
||||
FootnoteReturnLinkContents string
|
||||
// If set, add this text to the front of each Heading ID, to ensure
|
||||
// uniqueness.
|
||||
HeadingIDPrefix string
|
||||
// If set, add this text to the back of each Heading ID, to ensure uniqueness.
|
||||
HeadingIDSuffix string
|
||||
// Increase heading levels: if the offset is 1, <h1> becomes <h2> etc.
|
||||
// Negative offset is also valid.
|
||||
// Resulting levels are clipped between 1 and 6.
|
||||
HeadingLevelOffset int
|
||||
|
||||
Title string // Document title (used if CompletePage is set)
|
||||
CSS string // Optional CSS file URL (used if CompletePage is set)
|
||||
Icon string // Optional icon file URL (used if CompletePage is set)
|
||||
|
||||
Flags HTMLFlags // Flags allow customizing this renderer's behavior
|
||||
}
|
||||
|
||||
// HTMLRenderer is a type that implements the Renderer interface for HTML output.
|
||||
//
|
||||
// Do not create this directly, instead use the NewHTMLRenderer function.
|
||||
type HTMLRenderer struct {
|
||||
HTMLRendererParameters
|
||||
|
||||
closeTag string // how to end singleton tags: either " />" or ">"
|
||||
|
||||
// Track heading IDs to prevent ID collision in a single generation.
|
||||
headingIDs map[string]int
|
||||
|
||||
lastOutputLen int
|
||||
disableTags int
|
||||
|
||||
sr *SPRenderer
|
||||
}
|
||||
|
||||
const (
|
||||
xhtmlClose = " />"
|
||||
htmlClose = ">"
|
||||
)
|
||||
|
||||
// NewHTMLRenderer creates and configures an HTMLRenderer object, which
|
||||
// satisfies the Renderer interface.
|
||||
func NewHTMLRenderer(params HTMLRendererParameters) *HTMLRenderer {
|
||||
// configure the rendering engine
|
||||
closeTag := htmlClose
|
||||
if params.Flags&UseXHTML != 0 {
|
||||
closeTag = xhtmlClose
|
||||
}
|
||||
|
||||
if params.FootnoteReturnLinkContents == "" {
|
||||
params.FootnoteReturnLinkContents = `<sup>[return]</sup>`
|
||||
}
|
||||
|
||||
return &HTMLRenderer{
|
||||
HTMLRendererParameters: params,
|
||||
|
||||
closeTag: closeTag,
|
||||
headingIDs: make(map[string]int),
|
||||
|
||||
sr: NewSmartypantsRenderer(params.Flags),
|
||||
}
|
||||
}
|
||||
|
||||
func isHTMLTag(tag []byte, tagname string) bool {
|
||||
found, _ := findHTMLTagPos(tag, tagname)
|
||||
return found
|
||||
}
|
||||
|
||||
// Look for a character, but ignore it when it's in any kind of quotes, it
|
||||
// might be JavaScript
|
||||
func skipUntilCharIgnoreQuotes(html []byte, start int, char byte) int {
|
||||
inSingleQuote := false
|
||||
inDoubleQuote := false
|
||||
inGraveQuote := false
|
||||
i := start
|
||||
for i < len(html) {
|
||||
switch {
|
||||
case html[i] == char && !inSingleQuote && !inDoubleQuote && !inGraveQuote:
|
||||
return i
|
||||
case html[i] == '\'':
|
||||
inSingleQuote = !inSingleQuote
|
||||
case html[i] == '"':
|
||||
inDoubleQuote = !inDoubleQuote
|
||||
case html[i] == '`':
|
||||
inGraveQuote = !inGraveQuote
|
||||
}
|
||||
i++
|
||||
}
|
||||
return start
|
||||
}
|
||||
|
||||
func findHTMLTagPos(tag []byte, tagname string) (bool, int) {
|
||||
i := 0
|
||||
if i < len(tag) && tag[0] != '<' {
|
||||
return false, -1
|
||||
}
|
||||
i++
|
||||
i = skipSpace(tag, i)
|
||||
|
||||
if i < len(tag) && tag[i] == '/' {
|
||||
i++
|
||||
}
|
||||
|
||||
i = skipSpace(tag, i)
|
||||
j := 0
|
||||
for ; i < len(tag); i, j = i+1, j+1 {
|
||||
if j >= len(tagname) {
|
||||
break
|
||||
}
|
||||
|
||||
if strings.ToLower(string(tag[i]))[0] != tagname[j] {
|
||||
return false, -1
|
||||
}
|
||||
}
|
||||
|
||||
if i == len(tag) {
|
||||
return false, -1
|
||||
}
|
||||
|
||||
rightAngle := skipUntilCharIgnoreQuotes(tag, i, '>')
|
||||
if rightAngle >= i {
|
||||
return true, rightAngle
|
||||
}
|
||||
|
||||
return false, -1
|
||||
}
|
||||
|
||||
func skipSpace(tag []byte, i int) int {
|
||||
for i < len(tag) && isspace(tag[i]) {
|
||||
i++
|
||||
}
|
||||
return i
|
||||
}
|
||||
|
||||
func isRelativeLink(link []byte) (yes bool) {
|
||||
// a tag begin with '#'
|
||||
if link[0] == '#' {
|
||||
return true
|
||||
}
|
||||
|
||||
// link begin with '/' but not '//', the second maybe a protocol relative link
|
||||
if len(link) >= 2 && link[0] == '/' && link[1] != '/' {
|
||||
return true
|
||||
}
|
||||
|
||||
// only the root '/'
|
||||
if len(link) == 1 && link[0] == '/' {
|
||||
return true
|
||||
}
|
||||
|
||||
// current directory : begin with "./"
|
||||
if bytes.HasPrefix(link, []byte("./")) {
|
||||
return true
|
||||
}
|
||||
|
||||
// parent directory : begin with "../"
|
||||
if bytes.HasPrefix(link, []byte("../")) {
|
||||
return true
|
||||
}
|
||||
|
||||
return false
|
||||
}
|
||||
|
||||
func (r *HTMLRenderer) ensureUniqueHeadingID(id string) string {
|
||||
for count, found := r.headingIDs[id]; found; count, found = r.headingIDs[id] {
|
||||
tmp := fmt.Sprintf("%s-%d", id, count+1)
|
||||
|
||||
if _, tmpFound := r.headingIDs[tmp]; !tmpFound {
|
||||
r.headingIDs[id] = count + 1
|
||||
id = tmp
|
||||
} else {
|
||||
id = id + "-1"
|
||||
}
|
||||
}
|
||||
|
||||
if _, found := r.headingIDs[id]; !found {
|
||||
r.headingIDs[id] = 0
|
||||
}
|
||||
|
||||
return id
|
||||
}
|
||||
|
||||
func (r *HTMLRenderer) addAbsPrefix(link []byte) []byte {
|
||||
if r.AbsolutePrefix != "" && isRelativeLink(link) && link[0] != '.' {
|
||||
newDest := r.AbsolutePrefix
|
||||
if link[0] != '/' {
|
||||
newDest += "/"
|
||||
}
|
||||
newDest += string(link)
|
||||
return []byte(newDest)
|
||||
}
|
||||
return link
|
||||
}
|
||||
|
||||
func appendLinkAttrs(attrs []string, flags HTMLFlags, link []byte) []string {
|
||||
if isRelativeLink(link) {
|
||||
return attrs
|
||||
}
|
||||
val := []string{}
|
||||
if flags&NofollowLinks != 0 {
|
||||
val = append(val, "nofollow")
|
||||
}
|
||||
if flags&NoreferrerLinks != 0 {
|
||||
val = append(val, "noreferrer")
|
||||
}
|
||||
if flags&NoopenerLinks != 0 {
|
||||
val = append(val, "noopener")
|
||||
}
|
||||
if flags&HrefTargetBlank != 0 {
|
||||
attrs = append(attrs, "target=\"_blank\"")
|
||||
}
|
||||
if len(val) == 0 {
|
||||
return attrs
|
||||
}
|
||||
attr := fmt.Sprintf("rel=%q", strings.Join(val, " "))
|
||||
return append(attrs, attr)
|
||||
}
|
||||
|
||||
func isMailto(link []byte) bool {
|
||||
return bytes.HasPrefix(link, []byte("mailto:"))
|
||||
}
|
||||
|
||||
func needSkipLink(flags HTMLFlags, dest []byte) bool {
|
||||
if flags&SkipLinks != 0 {
|
||||
return true
|
||||
}
|
||||
return flags&Safelink != 0 && !isSafeLink(dest) && !isMailto(dest)
|
||||
}
|
||||
|
||||
func isSmartypantable(node *Node) bool {
|
||||
pt := node.Parent.Type
|
||||
return pt != Link && pt != CodeBlock && pt != Code
|
||||
}
|
||||
|
||||
func appendLanguageAttr(attrs []string, info []byte) []string {
|
||||
if len(info) == 0 {
|
||||
return attrs
|
||||
}
|
||||
endOfLang := bytes.IndexAny(info, "\t ")
|
||||
if endOfLang < 0 {
|
||||
endOfLang = len(info)
|
||||
}
|
||||
return append(attrs, fmt.Sprintf("class=\"language-%s\"", info[:endOfLang]))
|
||||
}
|
||||
|
||||
func (r *HTMLRenderer) tag(w io.Writer, name []byte, attrs []string) {
|
||||
w.Write(name)
|
||||
if len(attrs) > 0 {
|
||||
w.Write(spaceBytes)
|
||||
w.Write([]byte(strings.Join(attrs, " ")))
|
||||
}
|
||||
w.Write(gtBytes)
|
||||
r.lastOutputLen = 1
|
||||
}
|
||||
|
||||
func footnoteRef(prefix string, node *Node) []byte {
|
||||
urlFrag := prefix + string(slugify(node.Destination))
|
||||
anchor := fmt.Sprintf(`<a href="#fn:%s">%d</a>`, urlFrag, node.NoteID)
|
||||
return []byte(fmt.Sprintf(`<sup class="footnote-ref" id="fnref:%s">%s</sup>`, urlFrag, anchor))
|
||||
}
|
||||
|
||||
func footnoteItem(prefix string, slug []byte) []byte {
|
||||
return []byte(fmt.Sprintf(`<li id="fn:%s%s">`, prefix, slug))
|
||||
}
|
||||
|
||||
func footnoteReturnLink(prefix, returnLink string, slug []byte) []byte {
|
||||
const format = ` <a class="footnote-return" href="#fnref:%s%s">%s</a>`
|
||||
return []byte(fmt.Sprintf(format, prefix, slug, returnLink))
|
||||
}
|
||||
|
||||
func itemOpenCR(node *Node) bool {
|
||||
if node.Prev == nil {
|
||||
return false
|
||||
}
|
||||
ld := node.Parent.ListData
|
||||
return !ld.Tight && ld.ListFlags&ListTypeDefinition == 0
|
||||
}
|
||||
|
||||
func skipParagraphTags(node *Node) bool {
|
||||
grandparent := node.Parent.Parent
|
||||
if grandparent == nil || grandparent.Type != List {
|
||||
return false
|
||||
}
|
||||
tightOrTerm := grandparent.Tight || node.Parent.ListFlags&ListTypeTerm != 0
|
||||
return grandparent.Type == List && tightOrTerm
|
||||
}
|
||||
|
||||
func cellAlignment(align CellAlignFlags) string {
|
||||
switch align {
|
||||
case TableAlignmentLeft:
|
||||
return "left"
|
||||
case TableAlignmentRight:
|
||||
return "right"
|
||||
case TableAlignmentCenter:
|
||||
return "center"
|
||||
default:
|
||||
return ""
|
||||
}
|
||||
}
|
||||
|
||||
func (r *HTMLRenderer) out(w io.Writer, text []byte) {
|
||||
if r.disableTags > 0 {
|
||||
w.Write(htmlTagRe.ReplaceAll(text, []byte{}))
|
||||
} else {
|
||||
w.Write(text)
|
||||
}
|
||||
r.lastOutputLen = len(text)
|
||||
}
|
||||
|
||||
func (r *HTMLRenderer) cr(w io.Writer) {
|
||||
if r.lastOutputLen > 0 {
|
||||
r.out(w, nlBytes)
|
||||
}
|
||||
}
|
||||
|
||||
var (
|
||||
nlBytes = []byte{'\n'}
|
||||
gtBytes = []byte{'>'}
|
||||
spaceBytes = []byte{' '}
|
||||
)
|
||||
|
||||
var (
|
||||
brTag = []byte("<br>")
|
||||
brXHTMLTag = []byte("<br />")
|
||||
emTag = []byte("<em>")
|
||||
emCloseTag = []byte("</em>")
|
||||
strongTag = []byte("<strong>")
|
||||
strongCloseTag = []byte("</strong>")
|
||||
delTag = []byte("<del>")
|
||||
delCloseTag = []byte("</del>")
|
||||
ttTag = []byte("<tt>")
|
||||
ttCloseTag = []byte("</tt>")
|
||||
aTag = []byte("<a")
|
||||
aCloseTag = []byte("</a>")
|
||||
preTag = []byte("<pre>")
|
||||
preCloseTag = []byte("</pre>")
|
||||
codeTag = []byte("<code>")
|
||||
codeCloseTag = []byte("</code>")
|
||||
pTag = []byte("<p>")
|
||||
pCloseTag = []byte("</p>")
|
||||
blockquoteTag = []byte("<blockquote>")
|
||||
blockquoteCloseTag = []byte("</blockquote>")
|
||||
hrTag = []byte("<hr>")
|
||||
hrXHTMLTag = []byte("<hr />")
|
||||
ulTag = []byte("<ul>")
|
||||
ulCloseTag = []byte("</ul>")
|
||||
olTag = []byte("<ol>")
|
||||
olCloseTag = []byte("</ol>")
|
||||
dlTag = []byte("<dl>")
|
||||
dlCloseTag = []byte("</dl>")
|
||||
liTag = []byte("<li>")
|
||||
liCloseTag = []byte("</li>")
|
||||
ddTag = []byte("<dd>")
|
||||
ddCloseTag = []byte("</dd>")
|
||||
dtTag = []byte("<dt>")
|
||||
dtCloseTag = []byte("</dt>")
|
||||
tableTag = []byte("<table>")
|
||||
tableCloseTag = []byte("</table>")
|
||||
tdTag = []byte("<td")
|
||||
tdCloseTag = []byte("</td>")
|
||||
thTag = []byte("<th")
|
||||
thCloseTag = []byte("</th>")
|
||||
theadTag = []byte("<thead>")
|
||||
theadCloseTag = []byte("</thead>")
|
||||
tbodyTag = []byte("<tbody>")
|
||||
tbodyCloseTag = []byte("</tbody>")
|
||||
trTag = []byte("<tr>")
|
||||
trCloseTag = []byte("</tr>")
|
||||
h1Tag = []byte("<h1")
|
||||
h1CloseTag = []byte("</h1>")
|
||||
h2Tag = []byte("<h2")
|
||||
h2CloseTag = []byte("</h2>")
|
||||
h3Tag = []byte("<h3")
|
||||
h3CloseTag = []byte("</h3>")
|
||||
h4Tag = []byte("<h4")
|
||||
h4CloseTag = []byte("</h4>")
|
||||
h5Tag = []byte("<h5")
|
||||
h5CloseTag = []byte("</h5>")
|
||||
h6Tag = []byte("<h6")
|
||||
h6CloseTag = []byte("</h6>")
|
||||
|
||||
footnotesDivBytes = []byte("\n<div class=\"footnotes\">\n\n")
|
||||
footnotesCloseDivBytes = []byte("\n</div>\n")
|
||||
)
|
||||
|
||||
func headingTagsFromLevel(level int) ([]byte, []byte) {
|
||||
if level <= 1 {
|
||||
return h1Tag, h1CloseTag
|
||||
}
|
||||
switch level {
|
||||
case 2:
|
||||
return h2Tag, h2CloseTag
|
||||
case 3:
|
||||
return h3Tag, h3CloseTag
|
||||
case 4:
|
||||
return h4Tag, h4CloseTag
|
||||
case 5:
|
||||
return h5Tag, h5CloseTag
|
||||
}
|
||||
return h6Tag, h6CloseTag
|
||||
}
|
||||
|
||||
func (r *HTMLRenderer) outHRTag(w io.Writer) {
|
||||
if r.Flags&UseXHTML == 0 {
|
||||
r.out(w, hrTag)
|
||||
} else {
|
||||
r.out(w, hrXHTMLTag)
|
||||
}
|
||||
}
|
||||
|
||||
// RenderNode is a default renderer of a single node of a syntax tree. For
|
||||
// block nodes it will be called twice: first time with entering=true, second
|
||||
// time with entering=false, so that it could know when it's working on an open
|
||||
// tag and when on close. It writes the result to w.
|
||||
//
|
||||
// The return value is a way to tell the calling walker to adjust its walk
|
||||
// pattern: e.g. it can terminate the traversal by returning Terminate. Or it
|
||||
// can ask the walker to skip a subtree of this node by returning SkipChildren.
|
||||
// The typical behavior is to return GoToNext, which asks for the usual
|
||||
// traversal to the next node.
|
||||
func (r *HTMLRenderer) RenderNode(w io.Writer, node *Node, entering bool) WalkStatus {
|
||||
attrs := []string{}
|
||||
switch node.Type {
|
||||
case Text:
|
||||
if r.Flags&Smartypants != 0 {
|
||||
var tmp bytes.Buffer
|
||||
escapeHTML(&tmp, node.Literal)
|
||||
r.sr.Process(w, tmp.Bytes())
|
||||
} else {
|
||||
if node.Parent.Type == Link {
|
||||
escLink(w, node.Literal)
|
||||
} else {
|
||||
escapeHTML(w, node.Literal)
|
||||
}
|
||||
}
|
||||
case Softbreak:
|
||||
r.cr(w)
|
||||
// TODO: make it configurable via out(renderer.softbreak)
|
||||
case Hardbreak:
|
||||
if r.Flags&UseXHTML == 0 {
|
||||
r.out(w, brTag)
|
||||
} else {
|
||||
r.out(w, brXHTMLTag)
|
||||
}
|
||||
r.cr(w)
|
||||
case Emph:
|
||||
if entering {
|
||||
r.out(w, emTag)
|
||||
} else {
|
||||
r.out(w, emCloseTag)
|
||||
}
|
||||
case Strong:
|
||||
if entering {
|
||||
r.out(w, strongTag)
|
||||
} else {
|
||||
r.out(w, strongCloseTag)
|
||||
}
|
||||
case Del:
|
||||
if entering {
|
||||
r.out(w, delTag)
|
||||
} else {
|
||||
r.out(w, delCloseTag)
|
||||
}
|
||||
case HTMLSpan:
|
||||
if r.Flags&SkipHTML != 0 {
|
||||
break
|
||||
}
|
||||
r.out(w, node.Literal)
|
||||
case Link:
|
||||
// mark it but don't link it if it is not a safe link: no smartypants
|
||||
dest := node.LinkData.Destination
|
||||
if needSkipLink(r.Flags, dest) {
|
||||
if entering {
|
||||
r.out(w, ttTag)
|
||||
} else {
|
||||
r.out(w, ttCloseTag)
|
||||
}
|
||||
} else {
|
||||
if entering {
|
||||
dest = r.addAbsPrefix(dest)
|
||||
var hrefBuf bytes.Buffer
|
||||
hrefBuf.WriteString("href=\"")
|
||||
escLink(&hrefBuf, dest)
|
||||
hrefBuf.WriteByte('"')
|
||||
attrs = append(attrs, hrefBuf.String())
|
||||
if node.NoteID != 0 {
|
||||
r.out(w, footnoteRef(r.FootnoteAnchorPrefix, node))
|
||||
break
|
||||
}
|
||||
attrs = appendLinkAttrs(attrs, r.Flags, dest)
|
||||
if len(node.LinkData.Title) > 0 {
|
||||
var titleBuff bytes.Buffer
|
||||
titleBuff.WriteString("title=\"")
|
||||
escapeHTML(&titleBuff, node.LinkData.Title)
|
||||
titleBuff.WriteByte('"')
|
||||
attrs = append(attrs, titleBuff.String())
|
||||
}
|
||||
r.tag(w, aTag, attrs)
|
||||
} else {
|
||||
if node.NoteID != 0 {
|
||||
break
|
||||
}
|
||||
r.out(w, aCloseTag)
|
||||
}
|
||||
}
|
||||
case Image:
|
||||
if r.Flags&SkipImages != 0 {
|
||||
return SkipChildren
|
||||
}
|
||||
if entering {
|
||||
dest := node.LinkData.Destination
|
||||
dest = r.addAbsPrefix(dest)
|
||||
if r.disableTags == 0 {
|
||||
//if options.safe && potentiallyUnsafe(dest) {
|
||||
//out(w, `<img src="" alt="`)
|
||||
//} else {
|
||||
r.out(w, []byte(`<img src="`))
|
||||
escLink(w, dest)
|
||||
r.out(w, []byte(`" alt="`))
|
||||
//}
|
||||
}
|
||||
r.disableTags++
|
||||
} else {
|
||||
r.disableTags--
|
||||
if r.disableTags == 0 {
|
||||
if node.LinkData.Title != nil {
|
||||
r.out(w, []byte(`" title="`))
|
||||
escapeHTML(w, node.LinkData.Title)
|
||||
}
|
||||
r.out(w, []byte(`" />`))
|
||||
}
|
||||
}
|
||||
case Code:
|
||||
r.out(w, codeTag)
|
||||
escapeHTML(w, node.Literal)
|
||||
r.out(w, codeCloseTag)
|
||||
case Document:
|
||||
break
|
||||
case Paragraph:
|
||||
if skipParagraphTags(node) {
|
||||
break
|
||||
}
|
||||
if entering {
|
||||
// TODO: untangle this clusterfuck about when the newlines need
|
||||
// to be added and when not.
|
||||
if node.Prev != nil {
|
||||
switch node.Prev.Type {
|
||||
case HTMLBlock, List, Paragraph, Heading, CodeBlock, BlockQuote, HorizontalRule:
|
||||
r.cr(w)
|
||||
}
|
||||
}
|
||||
if node.Parent.Type == BlockQuote && node.Prev == nil {
|
||||
r.cr(w)
|
||||
}
|
||||
r.out(w, pTag)
|
||||
} else {
|
||||
r.out(w, pCloseTag)
|
||||
if !(node.Parent.Type == Item && node.Next == nil) {
|
||||
r.cr(w)
|
||||
}
|
||||
}
|
||||
case BlockQuote:
|
||||
if entering {
|
||||
r.cr(w)
|
||||
r.out(w, blockquoteTag)
|
||||
} else {
|
||||
r.out(w, blockquoteCloseTag)
|
||||
r.cr(w)
|
||||
}
|
||||
case HTMLBlock:
|
||||
if r.Flags&SkipHTML != 0 {
|
||||
break
|
||||
}
|
||||
r.cr(w)
|
||||
r.out(w, node.Literal)
|
||||
r.cr(w)
|
||||
case Heading:
|
||||
headingLevel := r.HTMLRendererParameters.HeadingLevelOffset + node.Level
|
||||
openTag, closeTag := headingTagsFromLevel(headingLevel)
|
||||
if entering {
|
||||
if node.IsTitleblock {
|
||||
attrs = append(attrs, `class="title"`)
|
||||
}
|
||||
if node.HeadingID != "" {
|
||||
id := r.ensureUniqueHeadingID(node.HeadingID)
|
||||
if r.HeadingIDPrefix != "" {
|
||||
id = r.HeadingIDPrefix + id
|
||||
}
|
||||
if r.HeadingIDSuffix != "" {
|
||||
id = id + r.HeadingIDSuffix
|
||||
}
|
||||
attrs = append(attrs, fmt.Sprintf(`id="%s"`, id))
|
||||
}
|
||||
r.cr(w)
|
||||
r.tag(w, openTag, attrs)
|
||||
} else {
|
||||
r.out(w, closeTag)
|
||||
if !(node.Parent.Type == Item && node.Next == nil) {
|
||||
r.cr(w)
|
||||
}
|
||||
}
|
||||
case HorizontalRule:
|
||||
r.cr(w)
|
||||
r.outHRTag(w)
|
||||
r.cr(w)
|
||||
case List:
|
||||
openTag := ulTag
|
||||
closeTag := ulCloseTag
|
||||
if node.ListFlags&ListTypeOrdered != 0 {
|
||||
openTag = olTag
|
||||
closeTag = olCloseTag
|
||||
}
|
||||
if node.ListFlags&ListTypeDefinition != 0 {
|
||||
openTag = dlTag
|
||||
closeTag = dlCloseTag
|
||||
}
|
||||
if entering {
|
||||
if node.IsFootnotesList {
|
||||
r.out(w, footnotesDivBytes)
|
||||
r.outHRTag(w)
|
||||
r.cr(w)
|
||||
}
|
||||
r.cr(w)
|
||||
if node.Parent.Type == Item && node.Parent.Parent.Tight {
|
||||
r.cr(w)
|
||||
}
|
||||
r.tag(w, openTag[:len(openTag)-1], attrs)
|
||||
r.cr(w)
|
||||
} else {
|
||||
r.out(w, closeTag)
|
||||
//cr(w)
|
||||
//if node.parent.Type != Item {
|
||||
// cr(w)
|
||||
//}
|
||||
if node.Parent.Type == Item && node.Next != nil {
|
||||
r.cr(w)
|
||||
}
|
||||
if node.Parent.Type == Document || node.Parent.Type == BlockQuote {
|
||||
r.cr(w)
|
||||
}
|
||||
if node.IsFootnotesList {
|
||||
r.out(w, footnotesCloseDivBytes)
|
||||
}
|
||||
}
|
||||
case Item:
|
||||
openTag := liTag
|
||||
closeTag := liCloseTag
|
||||
if node.ListFlags&ListTypeDefinition != 0 {
|
||||
openTag = ddTag
|
||||
closeTag = ddCloseTag
|
||||
}
|
||||
if node.ListFlags&ListTypeTerm != 0 {
|
||||
openTag = dtTag
|
||||
closeTag = dtCloseTag
|
||||
}
|
||||
if entering {
|
||||
if itemOpenCR(node) {
|
||||
r.cr(w)
|
||||
}
|
||||
if node.ListData.RefLink != nil {
|
||||
slug := slugify(node.ListData.RefLink)
|
||||
r.out(w, footnoteItem(r.FootnoteAnchorPrefix, slug))
|
||||
break
|
||||
}
|
||||
r.out(w, openTag)
|
||||
} else {
|
||||
if node.ListData.RefLink != nil {
|
||||
slug := slugify(node.ListData.RefLink)
|
||||
if r.Flags&FootnoteReturnLinks != 0 {
|
||||
r.out(w, footnoteReturnLink(r.FootnoteAnchorPrefix, r.FootnoteReturnLinkContents, slug))
|
||||
}
|
||||
}
|
||||
r.out(w, closeTag)
|
||||
r.cr(w)
|
||||
}
|
||||
case CodeBlock:
|
||||
attrs = appendLanguageAttr(attrs, node.Info)
|
||||
r.cr(w)
|
||||
r.out(w, preTag)
|
||||
r.tag(w, codeTag[:len(codeTag)-1], attrs)
|
||||
escapeHTML(w, node.Literal)
|
||||
r.out(w, codeCloseTag)
|
||||
r.out(w, preCloseTag)
|
||||
if node.Parent.Type != Item {
|
||||
r.cr(w)
|
||||
}
|
||||
case Table:
|
||||
if entering {
|
||||
r.cr(w)
|
||||
r.out(w, tableTag)
|
||||
} else {
|
||||
r.out(w, tableCloseTag)
|
||||
r.cr(w)
|
||||
}
|
||||
case TableCell:
|
||||
openTag := tdTag
|
||||
closeTag := tdCloseTag
|
||||
if node.IsHeader {
|
||||
openTag = thTag
|
||||
closeTag = thCloseTag
|
||||
}
|
||||
if entering {
|
||||
align := cellAlignment(node.Align)
|
||||
if align != "" {
|
||||
attrs = append(attrs, fmt.Sprintf(`align="%s"`, align))
|
||||
}
|
||||
if node.Prev == nil {
|
||||
r.cr(w)
|
||||
}
|
||||
r.tag(w, openTag, attrs)
|
||||
} else {
|
||||
r.out(w, closeTag)
|
||||
r.cr(w)
|
||||
}
|
||||
case TableHead:
|
||||
if entering {
|
||||
r.cr(w)
|
||||
r.out(w, theadTag)
|
||||
} else {
|
||||
r.out(w, theadCloseTag)
|
||||
r.cr(w)
|
||||
}
|
||||
case TableBody:
|
||||
if entering {
|
||||
r.cr(w)
|
||||
r.out(w, tbodyTag)
|
||||
// XXX: this is to adhere to a rather silly test. Should fix test.
|
||||
if node.FirstChild == nil {
|
||||
r.cr(w)
|
||||
}
|
||||
} else {
|
||||
r.out(w, tbodyCloseTag)
|
||||
r.cr(w)
|
||||
}
|
||||
case TableRow:
|
||||
if entering {
|
||||
r.cr(w)
|
||||
r.out(w, trTag)
|
||||
} else {
|
||||
r.out(w, trCloseTag)
|
||||
r.cr(w)
|
||||
}
|
||||
default:
|
||||
panic("Unknown node type " + node.Type.String())
|
||||
}
|
||||
return GoToNext
|
||||
}
|
||||
|
||||
// RenderHeader writes HTML document preamble and TOC if requested.
|
||||
func (r *HTMLRenderer) RenderHeader(w io.Writer, ast *Node) {
|
||||
r.writeDocumentHeader(w)
|
||||
if r.Flags&TOC != 0 {
|
||||
r.writeTOC(w, ast)
|
||||
}
|
||||
}
|
||||
|
||||
// RenderFooter writes HTML document footer.
|
||||
func (r *HTMLRenderer) RenderFooter(w io.Writer, ast *Node) {
|
||||
if r.Flags&CompletePage == 0 {
|
||||
return
|
||||
}
|
||||
io.WriteString(w, "\n</body>\n</html>\n")
|
||||
}
|
||||
|
||||
func (r *HTMLRenderer) writeDocumentHeader(w io.Writer) {
|
||||
if r.Flags&CompletePage == 0 {
|
||||
return
|
||||
}
|
||||
ending := ""
|
||||
if r.Flags&UseXHTML != 0 {
|
||||
io.WriteString(w, "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" ")
|
||||
io.WriteString(w, "\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n")
|
||||
io.WriteString(w, "<html xmlns=\"http://www.w3.org/1999/xhtml\">\n")
|
||||
ending = " /"
|
||||
} else {
|
||||
io.WriteString(w, "<!DOCTYPE html>\n")
|
||||
io.WriteString(w, "<html>\n")
|
||||
}
|
||||
io.WriteString(w, "<head>\n")
|
||||
io.WriteString(w, " <title>")
|
||||
if r.Flags&Smartypants != 0 {
|
||||
r.sr.Process(w, []byte(r.Title))
|
||||
} else {
|
||||
escapeHTML(w, []byte(r.Title))
|
||||
}
|
||||
io.WriteString(w, "</title>\n")
|
||||
io.WriteString(w, " <meta name=\"GENERATOR\" content=\"Blackfriday Markdown Processor v")
|
||||
io.WriteString(w, Version)
|
||||
io.WriteString(w, "\"")
|
||||
io.WriteString(w, ending)
|
||||
io.WriteString(w, ">\n")
|
||||
io.WriteString(w, " <meta charset=\"utf-8\"")
|
||||
io.WriteString(w, ending)
|
||||
io.WriteString(w, ">\n")
|
||||
if r.CSS != "" {
|
||||
io.WriteString(w, " <link rel=\"stylesheet\" type=\"text/css\" href=\"")
|
||||
escapeHTML(w, []byte(r.CSS))
|
||||
io.WriteString(w, "\"")
|
||||
io.WriteString(w, ending)
|
||||
io.WriteString(w, ">\n")
|
||||
}
|
||||
if r.Icon != "" {
|
||||
io.WriteString(w, " <link rel=\"icon\" type=\"image/x-icon\" href=\"")
|
||||
escapeHTML(w, []byte(r.Icon))
|
||||
io.WriteString(w, "\"")
|
||||
io.WriteString(w, ending)
|
||||
io.WriteString(w, ">\n")
|
||||
}
|
||||
io.WriteString(w, "</head>\n")
|
||||
io.WriteString(w, "<body>\n\n")
|
||||
}
|
||||
|
||||
func (r *HTMLRenderer) writeTOC(w io.Writer, ast *Node) {
|
||||
buf := bytes.Buffer{}
|
||||
|
||||
inHeading := false
|
||||
tocLevel := 0
|
||||
headingCount := 0
|
||||
|
||||
ast.Walk(func(node *Node, entering bool) WalkStatus {
|
||||
if node.Type == Heading && !node.HeadingData.IsTitleblock {
|
||||
inHeading = entering
|
||||
if entering {
|
||||
node.HeadingID = fmt.Sprintf("toc_%d", headingCount)
|
||||
if node.Level == tocLevel {
|
||||
buf.WriteString("</li>\n\n<li>")
|
||||
} else if node.Level < tocLevel {
|
||||
for node.Level < tocLevel {
|
||||
tocLevel--
|
||||
buf.WriteString("</li>\n</ul>")
|
||||
}
|
||||
buf.WriteString("</li>\n\n<li>")
|
||||
} else {
|
||||
for node.Level > tocLevel {
|
||||
tocLevel++
|
||||
buf.WriteString("\n<ul>\n<li>")
|
||||
}
|
||||
}
|
||||
|
||||
fmt.Fprintf(&buf, `<a href="#toc_%d">`, headingCount)
|
||||
headingCount++
|
||||
} else {
|
||||
buf.WriteString("</a>")
|
||||
}
|
||||
return GoToNext
|
||||
}
|
||||
|
||||
if inHeading {
|
||||
return r.RenderNode(&buf, node, entering)
|
||||
}
|
||||
|
||||
return GoToNext
|
||||
})
|
||||
|
||||
for ; tocLevel > 0; tocLevel-- {
|
||||
buf.WriteString("</li>\n</ul>")
|
||||
}
|
||||
|
||||
if buf.Len() > 0 {
|
||||
io.WriteString(w, "<nav>\n")
|
||||
w.Write(buf.Bytes())
|
||||
io.WriteString(w, "\n\n</nav>\n")
|
||||
}
|
||||
r.lastOutputLen = buf.Len()
|
||||
}
|
||||
File diff suppressed because it is too large
Load Diff
@ -0,0 +1,354 @@
|
||||
package blackfriday
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"fmt"
|
||||
)
|
||||
|
||||
// NodeType specifies a type of a single node of a syntax tree. Usually one
|
||||
// node (and its type) corresponds to a single markdown feature, e.g. emphasis
|
||||
// or code block.
|
||||
type NodeType int
|
||||
|
||||
// Constants for identifying different types of nodes. See NodeType.
|
||||
const (
|
||||
Document NodeType = iota
|
||||
BlockQuote
|
||||
List
|
||||
Item
|
||||
Paragraph
|
||||
Heading
|
||||
HorizontalRule
|
||||
Emph
|
||||
Strong
|
||||
Del
|
||||
Link
|
||||
Image
|
||||
Text
|
||||
HTMLBlock
|
||||
CodeBlock
|
||||
Softbreak
|
||||
Hardbreak
|
||||
Code
|
||||
HTMLSpan
|
||||
Table
|
||||
TableCell
|
||||
TableHead
|
||||
TableBody
|
||||
TableRow
|
||||
)
|
||||
|
||||
var nodeTypeNames = []string{
|
||||
Document: "Document",
|
||||
BlockQuote: "BlockQuote",
|
||||
List: "List",
|
||||
Item: "Item",
|
||||
Paragraph: "Paragraph",
|
||||
Heading: "Heading",
|
||||
HorizontalRule: "HorizontalRule",
|
||||
Emph: "Emph",
|
||||
Strong: "Strong",
|
||||
Del: "Del",
|
||||
Link: "Link",
|
||||
Image: "Image",
|
||||
Text: "Text",
|
||||
HTMLBlock: "HTMLBlock",
|
||||
CodeBlock: "CodeBlock",
|
||||
Softbreak: "Softbreak",
|
||||
Hardbreak: "Hardbreak",
|
||||
Code: "Code",
|
||||
HTMLSpan: "HTMLSpan",
|
||||
Table: "Table",
|
||||
TableCell: "TableCell",
|
||||
TableHead: "TableHead",
|
||||
TableBody: "TableBody",
|
||||
TableRow: "TableRow",
|
||||
}
|
||||
|
||||
func (t NodeType) String() string {
|
||||
return nodeTypeNames[t]
|
||||
}
|
||||
|
||||
// ListData contains fields relevant to a List and Item node type.
|
||||
type ListData struct {
|
||||
ListFlags ListType
|
||||
Tight bool // Skip <p>s around list item data if true
|
||||
BulletChar byte // '*', '+' or '-' in bullet lists
|
||||
Delimiter byte // '.' or ')' after the number in ordered lists
|
||||
RefLink []byte // If not nil, turns this list item into a footnote item and triggers different rendering
|
||||
IsFootnotesList bool // This is a list of footnotes
|
||||
}
|
||||
|
||||
// LinkData contains fields relevant to a Link node type.
|
||||
type LinkData struct {
|
||||
Destination []byte // Destination is what goes into a href
|
||||
Title []byte // Title is the tooltip thing that goes in a title attribute
|
||||
NoteID int // NoteID contains a serial number of a footnote, zero if it's not a footnote
|
||||
Footnote *Node // If it's a footnote, this is a direct link to the footnote Node. Otherwise nil.
|
||||
}
|
||||
|
||||
// CodeBlockData contains fields relevant to a CodeBlock node type.
|
||||
type CodeBlockData struct {
|
||||
IsFenced bool // Specifies whether it's a fenced code block or an indented one
|
||||
Info []byte // This holds the info string
|
||||
FenceChar byte
|
||||
FenceLength int
|
||||
FenceOffset int
|
||||
}
|
||||
|
||||
// TableCellData contains fields relevant to a TableCell node type.
|
||||
type TableCellData struct {
|
||||
IsHeader bool // This tells if it's under the header row
|
||||
Align CellAlignFlags // This holds the value for align attribute
|
||||
}
|
||||
|
||||
// HeadingData contains fields relevant to a Heading node type.
|
||||
type HeadingData struct {
|
||||
Level int // This holds the heading level number
|
||||
HeadingID string // This might hold heading ID, if present
|
||||
IsTitleblock bool // Specifies whether it's a title block
|
||||
}
|
||||
|
||||
// Node is a single element in the abstract syntax tree of the parsed document.
|
||||
// It holds connections to the structurally neighboring nodes and, for certain
|
||||
// types of nodes, additional information that might be needed when rendering.
|
||||
type Node struct {
|
||||
Type NodeType // Determines the type of the node
|
||||
Parent *Node // Points to the parent
|
||||
FirstChild *Node // Points to the first child, if any
|
||||
LastChild *Node // Points to the last child, if any
|
||||
Prev *Node // Previous sibling; nil if it's the first child
|
||||
Next *Node // Next sibling; nil if it's the last child
|
||||
|
||||
Literal []byte // Text contents of the leaf nodes
|
||||
|
||||
HeadingData // Populated if Type is Heading
|
||||
ListData // Populated if Type is List
|
||||
CodeBlockData // Populated if Type is CodeBlock
|
||||
LinkData // Populated if Type is Link
|
||||
TableCellData // Populated if Type is TableCell
|
||||
|
||||
content []byte // Markdown content of the block nodes
|
||||
open bool // Specifies an open block node that has not been finished to process yet
|
||||
}
|
||||
|
||||
// NewNode allocates a node of a specified type.
|
||||
func NewNode(typ NodeType) *Node {
|
||||
return &Node{
|
||||
Type: typ,
|
||||
open: true,
|
||||
}
|
||||
}
|
||||
|
||||
func (n *Node) String() string {
|
||||
ellipsis := ""
|
||||
snippet := n.Literal
|
||||
if len(snippet) > 16 {
|
||||
snippet = snippet[:16]
|
||||
ellipsis = "..."
|
||||
}
|
||||
return fmt.Sprintf("%s: '%s%s'", n.Type, snippet, ellipsis)
|
||||
}
|
||||
|
||||
// Unlink removes node 'n' from the tree.
|
||||
// It panics if the node is nil.
|
||||
func (n *Node) Unlink() {
|
||||
if n.Prev != nil {
|
||||
n.Prev.Next = n.Next
|
||||
} else if n.Parent != nil {
|
||||
n.Parent.FirstChild = n.Next
|
||||
}
|
||||
if n.Next != nil {
|
||||
n.Next.Prev = n.Prev
|
||||
} else if n.Parent != nil {
|
||||
n.Parent.LastChild = n.Prev
|
||||
}
|
||||
n.Parent = nil
|
||||
n.Next = nil
|
||||
n.Prev = nil
|
||||
}
|
||||
|
||||
// AppendChild adds a node 'child' as a child of 'n'.
|
||||
// It panics if either node is nil.
|
||||
func (n *Node) AppendChild(child *Node) {
|
||||
child.Unlink()
|
||||
child.Parent = n
|
||||
if n.LastChild != nil {
|
||||
n.LastChild.Next = child
|
||||
child.Prev = n.LastChild
|
||||
n.LastChild = child
|
||||
} else {
|
||||
n.FirstChild = child
|
||||
n.LastChild = child
|
||||
}
|
||||
}
|
||||
|
||||
// InsertBefore inserts 'sibling' immediately before 'n'.
|
||||
// It panics if either node is nil.
|
||||
func (n *Node) InsertBefore(sibling *Node) {
|
||||
sibling.Unlink()
|
||||
sibling.Prev = n.Prev
|
||||
if sibling.Prev != nil {
|
||||
sibling.Prev.Next = sibling
|
||||
}
|
||||
sibling.Next = n
|
||||
n.Prev = sibling
|
||||
sibling.Parent = n.Parent
|
||||
if sibling.Prev == nil {
|
||||
sibling.Parent.FirstChild = sibling
|
||||
}
|
||||
}
|
||||
|
||||
func (n *Node) isContainer() bool {
|
||||
switch n.Type {
|
||||
case Document:
|
||||
fallthrough
|
||||
case BlockQuote:
|
||||
fallthrough
|
||||
case List:
|
||||
fallthrough
|
||||
case Item:
|
||||
fallthrough
|
||||
case Paragraph:
|
||||
fallthrough
|
||||
case Heading:
|
||||
fallthrough
|
||||
case Emph:
|
||||
fallthrough
|
||||
case Strong:
|
||||
fallthrough
|
||||
case Del:
|
||||
fallthrough
|
||||
case Link:
|
||||
fallthrough
|
||||
case Image:
|
||||
fallthrough
|
||||
case Table:
|
||||
fallthrough
|
||||
case TableHead:
|
||||
fallthrough
|
||||
case TableBody:
|
||||
fallthrough
|
||||
case TableRow:
|
||||
fallthrough
|
||||
case TableCell:
|
||||
return true
|
||||
default:
|
||||
return false
|
||||
}
|
||||
}
|
||||
|
||||
func (n *Node) canContain(t NodeType) bool {
|
||||
if n.Type == List {
|
||||
return t == Item
|
||||
}
|
||||
if n.Type == Document || n.Type == BlockQuote || n.Type == Item {
|
||||
return t != Item
|
||||
}
|
||||
if n.Type == Table {
|
||||
return t == TableHead || t == TableBody
|
||||
}
|
||||
if n.Type == TableHead || n.Type == TableBody {
|
||||
return t == TableRow
|
||||
}
|
||||
if n.Type == TableRow {
|
||||
return t == TableCell
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// WalkStatus allows NodeVisitor to have some control over the tree traversal.
|
||||
// It is returned from NodeVisitor and different values allow Node.Walk to
|
||||
// decide which node to go to next.
|
||||
type WalkStatus int
|
||||
|
||||
const (
|
||||
// GoToNext is the default traversal of every node.
|
||||
GoToNext WalkStatus = iota
|
||||
// SkipChildren tells walker to skip all children of current node.
|
||||
SkipChildren
|
||||
// Terminate tells walker to terminate the traversal.
|
||||
Terminate
|
||||
)
|
||||
|
||||
// NodeVisitor is a callback to be called when traversing the syntax tree.
|
||||
// Called twice for every node: once with entering=true when the branch is
|
||||
// first visited, then with entering=false after all the children are done.
|
||||
type NodeVisitor func(node *Node, entering bool) WalkStatus
|
||||
|
||||
// Walk is a convenience method that instantiates a walker and starts a
|
||||
// traversal of subtree rooted at n.
|
||||
func (n *Node) Walk(visitor NodeVisitor) {
|
||||
w := newNodeWalker(n)
|
||||
for w.current != nil {
|
||||
status := visitor(w.current, w.entering)
|
||||
switch status {
|
||||
case GoToNext:
|
||||
w.next()
|
||||
case SkipChildren:
|
||||
w.entering = false
|
||||
w.next()
|
||||
case Terminate:
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
type nodeWalker struct {
|
||||
current *Node
|
||||
root *Node
|
||||
entering bool
|
||||
}
|
||||
|
||||
func newNodeWalker(root *Node) *nodeWalker {
|
||||
return &nodeWalker{
|
||||
current: root,
|
||||
root: root,
|
||||
entering: true,
|
||||
}
|
||||
}
|
||||
|
||||
func (nw *nodeWalker) next() {
|
||||
if (!nw.current.isContainer() || !nw.entering) && nw.current == nw.root {
|
||||
nw.current = nil
|
||||
return
|
||||
}
|
||||
if nw.entering && nw.current.isContainer() {
|
||||
if nw.current.FirstChild != nil {
|
||||
nw.current = nw.current.FirstChild
|
||||
nw.entering = true
|
||||
} else {
|
||||
nw.entering = false
|
||||
}
|
||||
} else if nw.current.Next == nil {
|
||||
nw.current = nw.current.Parent
|
||||
nw.entering = false
|
||||
} else {
|
||||
nw.current = nw.current.Next
|
||||
nw.entering = true
|
||||
}
|
||||
}
|
||||
|
||||
func dump(ast *Node) {
|
||||
fmt.Println(dumpString(ast))
|
||||
}
|
||||
|
||||
func dumpR(ast *Node, depth int) string {
|
||||
if ast == nil {
|
||||
return ""
|
||||
}
|
||||
indent := bytes.Repeat([]byte("\t"), depth)
|
||||
content := ast.Literal
|
||||
if content == nil {
|
||||
content = ast.content
|
||||
}
|
||||
result := fmt.Sprintf("%s%s(%q)\n", indent, ast.Type, content)
|
||||
for n := ast.FirstChild; n != nil; n = n.Next {
|
||||
result += dumpR(n, depth+1)
|
||||
}
|
||||
return result
|
||||
}
|
||||
|
||||
func dumpString(ast *Node) string {
|
||||
return dumpR(ast, 0)
|
||||
}
|
||||
@ -0,0 +1 @@
|
||||
module github.com/shurcooL/sanitized_anchor_name
|
||||
Loading…
Reference in New Issue