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|
package main
import (
"fmt"
"io"
"io/ioutil"
"log"
"os"
"runtime/debug"
"strings"
"github.com/alecthomas/chroma/v2"
"github.com/alecthomas/chroma/v2/formatters/html"
"github.com/alecthomas/chroma/v2/lexers"
"github.com/alecthomas/chroma/v2/styles"
"github.com/niklasfasching/go-org/blorg"
"github.com/niklasfasching/go-org/org"
)
var usage = `Usage: go-org COMMAND [ARGS]...
Commands:
- render [FILE] FORMAT
FORMAT: org, html, html-chroma
Instead of specifying a file, org mode content can also be passed on stdin
- blorg
- blorg init
- blorg build
- blorg serve
`
func main() {
log.SetFlags(0)
if len(os.Args) < 2 {
log.Fatal(usage)
}
switch cmd, args := os.Args[1], os.Args[2:]; cmd {
case "render":
render(args)
case "blorg":
runBlorg(args)
case "version":
printVersion()
default:
log.Fatal(usage)
}
}
func runBlorg(args []string) {
if len(args) == 0 {
log.Fatal(usage)
}
switch strings.ToLower(args[0]) {
case "init":
if _, err := os.Stat(blorg.DefaultConfigFile); !os.IsNotExist(err) {
log.Fatalf("%s already exists", blorg.DefaultConfigFile)
}
if err := ioutil.WriteFile(blorg.DefaultConfigFile, []byte(blorg.DefaultConfig), os.ModePerm); err != nil {
log.Fatal(err)
}
if err := os.MkdirAll("content", os.ModePerm); err != nil {
log.Fatal(err)
}
log.Println("./blorg.org and ./content/ created. Please adapt ./blorg.org")
case "build":
config, err := blorg.ReadConfig(blorg.DefaultConfigFile)
if err != nil {
log.Fatal(err)
}
if err := config.Render(); err != nil {
log.Fatal(err)
}
log.Println("blorg build finished")
case "serve":
config, err := blorg.ReadConfig(blorg.DefaultConfigFile)
if err != nil {
log.Fatal(err)
}
log.Fatal(config.Serve())
default:
log.Fatal(usage)
}
}
func render(args []string) {
r, path, format := io.Reader(nil), "", ""
if fi, err := os.Stdin.Stat(); err != nil {
log.Fatal(err)
} else if len(args) == 2 {
f, err := os.Open(args[0])
if err != nil {
log.Fatal(err)
}
defer f.Close()
r, path, format = f, args[0], args[1]
} else if fi.Mode()&os.ModeCharDevice == 0 {
r, path, format = os.Stdin, "./STDIN", args[0]
} else {
log.Fatal(usage)
}
d := org.New().Parse(r, path)
write := func(w org.Writer) {
out, err := d.Write(w)
if err != nil {
log.Fatal(err)
}
fmt.Fprint(os.Stdout, out)
}
switch strings.ToLower(format) {
case "org":
write(org.NewOrgWriter())
case "html":
write(org.NewHTMLWriter())
case "html-chroma":
writer := org.NewHTMLWriter()
writer.HighlightCodeBlock = highlightCodeBlock
write(writer)
default:
log.Fatal(usage)
}
}
func highlightCodeBlock(source, lang string, inline bool, params map[string]string) string {
var w strings.Builder
l := lexers.Get(lang)
if l == nil {
l = lexers.Fallback
}
l = chroma.Coalesce(l)
it, _ := l.Tokenise(nil, source)
options := []html.Option{}
if params[":hl_lines"] != "" {
ranges := org.ParseRanges(params[":hl_lines"])
if ranges != nil {
options = append(options, html.HighlightLines(ranges))
}
}
_ = html.New(options...).Format(&w, styles.Get("friendly"), it)
if inline {
return `<div class="highlight-inline">` + "\n" + w.String() + "\n" + `</div>`
}
return `<div class="highlight">` + "\n" + w.String() + "\n" + `</div>`
}
func printVersion() {
bi, ok := debug.ReadBuildInfo()
if !ok {
log.Fatal("not build info available")
}
revision, modified := "", false
for _, s := range bi.Settings {
if s.Key == "vcs.revision" {
revision = s.Value
} else if s.Key == "vcs.modified" {
modified = s.Value == "true"
}
}
log.Printf("%s (modified: %v)", revision, modified)
}
|
