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package main
import (
"bufio"
"fmt"
"strings"
)
type Markup []byte
type LineType int8
const (
TextLine LineType = iota
LinkLine
HeadingLine
UnorderedListItem
)
func getLineType(line string) LineType {
if strings.HasPrefix(line, "=>") {
return LinkLine
}
if strings.HasPrefix(line, "#") {
return HeadingLine
}
if strings.HasPrefix(line, "* ") {
return UnorderedListItem
}
return TextLine
}
func (m Markup) title() string {
text := string(m)
scanner := bufio.NewScanner(strings.NewReader(text))
for scanner.Scan() {
line := scanner.Text()
if strings.HasPrefix(line, "# ") {
return strings.TrimPrefix(line, "# ")
}
}
return ""
}
func (m Markup) html() string {
retval := ""
var line string
var lineType LineType
var lastType LineType = -1
text := string(m)
scanner := bufio.NewScanner(strings.NewReader(text))
for scanner.Scan() {
line = scanner.Text()
lineType = getLineType(line)
if lineType != UnorderedListItem && lastType == UnorderedListItem {
retval += "\n</ul>"
}
if line == "" {
continue
}
switch lineType {
case LinkLine:
retval += fmt.Sprintf("\n<pre>%s</pre>", line)
case HeadingLine:
retval += fmt.Sprintf("\n<h3>%s</h3>", line)
case UnorderedListItem:
if lastType != UnorderedListItem {
retval += "\n<ul>"
}
item := strings.TrimPrefix(line, "*")
retval += fmt.Sprintf("\n\t<li>%s</li>", item)
default:
retval += fmt.Sprintf("\n<p>%s</p>", line)
}
lastType = lineType
}
if lineType == UnorderedListItem {
retval += "\n</ul>"
}
retval = strings.TrimPrefix(retval, "\n")
return retval
}
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