58 lines
1.3 KiB
Go
58 lines
1.3 KiB
Go
package format
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import (
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"html/template"
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"strings"
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)
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// Diff formats diff text to HTML.
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func Diff(text string) string {
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index := 0
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// skip headers
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lineNumber := 0
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for lineNumber < 2 && index < len(text) {
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_, index = indexLineEnd(text, index)
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lineNumber++
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}
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var html strings.Builder
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for index < len(text) {
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lineEnd, nextLine := indexLineEnd(text, index)
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line := text[index:lineEnd]
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index = nextLine
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if len(line) < 1 {
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html.WriteString("<br />\n")
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continue
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}
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c := line[0]
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htmlLine := template.HTMLEscapeString(string(line))
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if c == '+' {
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html.WriteString("<span class=\"plus\">+</span>")
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html.WriteString("<span class=\"plus-line\">")
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html.WriteString(htmlLine[1:])
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html.WriteString("</span><br />\n")
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} else if c == '-' {
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html.WriteString("<span class=\"minus\">-</span>")
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html.WriteString("<span class=\"minus-line\">")
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html.WriteString(htmlLine[1:])
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html.WriteString("</span><br />\n")
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} else if c == '@' {
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html.WriteString("<span class=\"hunk\">@")
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html.WriteString(htmlLine[1:])
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html.WriteString("</span><br />\n")
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} else if c == ' ' {
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html.WriteString(" ")
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html.WriteString(htmlLine[1:])
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html.WriteString("<br />\n")
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} else {
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html.WriteString(htmlLine)
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html.WriteString("<br />\n")
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}
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}
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return html.String()
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}
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