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jfa-go/stripmd.go

56 lines
1.4 KiB

package main
import (
"strings"
stripmd "github.com/writeas/go-strip-markdown"
)
func stripMarkdown(md string) string {
// Search for markdown-formatted urls, and replace them with just the url, then use a library to strip any traces of markdown. You'll need some eyebleach after this.
foundOpenSquare := false
openSquare := -1
openBracket := -1
closeBracket := -1
openSquares := []int{}
closeBrackets := []int{}
links := []string{}
foundOpen := false
for i, c := range md {
if !foundOpenSquare && !foundOpen && c != '[' && c != ']' {
continue
}
if c == '[' && md[i-1] != '!' {
foundOpenSquare = true
openSquare = i
} else if c == ']' {
if md[i+1] == '(' {
foundOpenSquare = false
foundOpen = true
openBracket = i + 1
continue
}
} else if c == ')' {
closeBracket = i
openSquares = append(openSquares, openSquare)
closeBrackets = append(closeBrackets, closeBracket)
links = append(links, md[openBracket+1:closeBracket])
openBracket = -1
closeBracket = -1
openSquare = -1
foundOpenSquare = false
foundOpen = false
}
}
fullLinks := make([]string, len(openSquares))
for i := range openSquares {
if openSquares[i] != -1 && closeBrackets[i] != -1 {
fullLinks[i] = md[openSquares[i] : closeBrackets[i]+1]
}
}
for i, _ := range openSquares {
md = strings.Replace(md, fullLinks[i], links[i], 1)
}
return strings.TrimPrefix(strings.TrimSuffix(stripmd.Strip(md), "</p>"), "<p>")
}