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// Copyright 2021, Chef. All rights reserved.
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// https://github.com/q191201771/naza
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//
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// Use of this source code is governed by a MIT-style license
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// that can be found in the License file.
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//
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// Author: Chef (191201771@qq.com)
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// Package chartbar 控制台绘制ascii柱状图
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//
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package chartbar
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// TODO(chef): 如果总数小于绘制长度并且都是正整数，可以考虑按原始值而非比例绘制
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const (
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OrderOrigin Order = iota + 1 // 原始序
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OrderAscCount // 按计数值升序排序
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OrderDescCount // 按计数值降序排序
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OrderAscName // 按字段名称升序排序
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OrderDescName // 按字段名称降序排序
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NoNumLimit = -1
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)
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type Item struct {
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Name string // key
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Num float64 // value
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count int // bar
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}
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type Order int
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type Option struct {
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MaxBarLength int
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DrawIconBlock string
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DrawIconPadding string
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Order Order
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PrefixNumLimit int
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SuffixNumLimit int
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}
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var defaultOption = Option{
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// 50 "▇" " "
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// 18 "口" " "
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MaxBarLength: 50, // MaxBarLength 柱状图形的最大长度
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DrawIconBlock: "▇", // 柱状图实体绘制内容
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DrawIconPadding: " ", // 柱状图空余部分绘制内容
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Order: OrderDescCount,
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PrefixNumLimit: NoNumLimit,
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SuffixNumLimit: NoNumLimit,
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}
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// ---------------------------------------------------------------------------------------------------------------------
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var DefaultCtx = NewCtx()
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type ModOption func(option *Option)
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func NewCtx(modOptions ...ModOption) *Ctx {
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option := defaultOption
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for _, fn := range modOptions {
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fn(&option)
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}
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return &Ctx{
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option: option,
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}
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}
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func NewCtxWith(ctx *Ctx, modOptions ...ModOption) *Ctx {
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option := ctx.option
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for _, fn := range modOptions {
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fn(&option)
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}
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return &Ctx{
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option: option,
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}
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}
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