mirror of
https://github.com/diamondburned/cchat-gtk.git
synced 2024-12-24 13:16:50 +00:00
84 lines
1.7 KiB
Go
84 lines
1.7 KiB
Go
package parser
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import (
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"bytes"
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"fmt"
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"html"
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"sort"
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"github.com/diamondburned/cchat/text"
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)
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type attrAppendMap struct {
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appended map[int]string
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indices []int
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}
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func newAttrAppendedMap() attrAppendMap {
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return attrAppendMap{
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appended: make(map[int]string),
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indices: []int{},
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}
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}
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func (a *attrAppendMap) add(ind int, attr string) {
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if _, ok := a.appended[ind]; ok {
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a.appended[ind] += attr
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return
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}
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a.appended[ind] = attr
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a.indices = append(a.indices, ind)
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}
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func (a attrAppendMap) get(ind int) string {
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return a.appended[ind]
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}
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func (a *attrAppendMap) finalize(strlen int) []int {
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// make sure there's always a closing tag at the end so the entire string
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// gets flushed.
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a.add(strlen, "")
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sort.Ints(a.indices)
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return a.indices
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}
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func RenderMarkup(content text.Rich) string {
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buf := bytes.Buffer{}
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buf.Grow(len(content.Content))
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// // Sort so that all starting points are sorted incrementally.
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// sort.Slice(content.Segments, func(i, j int) bool {
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// i, _ = content.Segments[i].Bounds()
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// j, _ = content.Segments[j].Bounds()
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// return i < j
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// })
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// map to append strings to indices
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var appended = newAttrAppendedMap()
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// Parse all segments.
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for _, segment := range content.Segments {
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start, end := segment.Bounds()
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switch segment := segment.(type) {
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case text.Colorer:
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appended.add(start, fmt.Sprintf("<span color=\"#%06X\">", segment.Color()))
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appended.add(end, "</span>")
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}
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}
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var lastIndex = 0
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for _, index := range appended.finalize(len(content.Content)) {
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// Write the content.
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buf.WriteString(html.EscapeString(content.Content[lastIndex:index]))
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// Write the tags.
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buf.WriteString(appended.get(index))
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// Set the last index.
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lastIndex = index
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}
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return buf.String()
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}
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