54 lines
1.3 KiB
Go
54 lines
1.3 KiB
Go
package main
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import (
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"bytes"
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"io/ioutil"
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"log"
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"os"
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"strings"
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"github.com/alecthomas/chroma"
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"github.com/alecthomas/chroma/formatters/html"
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"github.com/alecthomas/chroma/lexers"
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"github.com/alecthomas/chroma/styles"
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"github.com/niklasfasching/go-org/org"
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)
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func main() {
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log.SetFlags(0)
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log.SetOutput(os.Stdout)
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if len(os.Args) < 3 {
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log.Println("USAGE: org FILE OUTPUT_FORMAT")
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log.Fatal("supported output formats: org, html, html-chroma")
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}
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bs, err := ioutil.ReadFile(os.Args[1])
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if err != nil {
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log.Fatal(err)
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}
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r, out := bytes.NewReader(bs), ""
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switch strings.ToLower(os.Args[2]) {
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case "org":
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out = org.NewDocument().Parse(r).Write(org.NewOrgWriter()).String()
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case "html":
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out = org.NewDocument().Parse(r).Write(org.NewHTMLWriter()).String()
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case "html-chroma":
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writer := org.NewHTMLWriter()
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writer.HighlightCodeBlock = highlightCodeBlock
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out = org.NewDocument().Parse(r).Write(writer).String()
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default:
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log.Fatal("Unsupported output format")
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}
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log.Print(out)
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}
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func highlightCodeBlock(source, lang string) string {
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var w strings.Builder
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l := lexers.Get(lang)
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if l == nil {
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l = lexers.Fallback
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}
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l = chroma.Coalesce(l)
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it, _ := l.Tokenise(nil, source)
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_ = html.New().Format(&w, styles.Get("friendly"), it)
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return `<div class="highlight">` + "\n" + w.String() + "\n" + `</div>`
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}
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