package main import ( "bytes" "io" "io/ioutil" "os" "path/filepath" "strings" "git.sr.ht/~ft/cue" "github.com/asdfsx/gochardet" "golang.org/x/text/encoding" "golang.org/x/text/encoding/ianaindex") var pathReplaceChars func(string) string func init() { r := strings.NewReplacer( `/`, `∕`, `"`, `“`, `?`, `？`, `*`, `∗`, `\`, `⧵`, `|`, `∣`, `;`, `;`, `:`, `∶`, `<`, `‹`, `>`, `›`, ) pathReplaceChars = r.Replace} func decoderToUTF8For(b []byte) (dec *encoding.Decoder, err error) { var best *chardet.Result var enc encoding.Encoding if best, err = chardet.NewTextDetector().DetectBest(b); err != nil { return } else if best.Confidence >= 25 { if enc, err = ianaindex.IANA.Encoding(best.Charset); err != nil { err = nil } } if enc == nil { enc = encoding.Nop } dec = enc.NewDecoder() return} func openFileUTF8(path string) (r io.ReadCloser, err error) { if r, err = os.Open(path); err != nil { return } defer r.Close() buf := new(bytes.Buffer) if _, err = buf.ReadFrom(r); err != nil { return } var dec *encoding.Decoder if dec, err = decoderToUTF8For(buf.Bytes()); err != nil { return } r = ioutil.NopCloser(dec.Reader(buf)) return} func cueSheetFromBytes(raw []byte) (sheet *cue.Sheet, err error) { if sheet, err = cue.Parse(bytes.NewBuffer(raw), 0); err != nil { return } buf := new(bytes.Buffer) buf.WriteString(sheet.Performer) buf.WriteString(sheet.Songwriter) buf.WriteString(sheet.Title) for _, f := range sheet.Files { if f.Type == cue.FileTypeWave { for _, t := range f.Tracks { buf.WriteString(t.Title) } buf.WriteString(f.Name) } } var dec *encoding.Decoder if dec, err = decoderToUTF8For(buf.Bytes()); err == nil { sheet, err = cue.Parse(dec.Reader(bytes.NewBuffer(raw)), 0) } return} func findAudioFile(dir, name string) (string, bool) { var f *os.File var fis []os.FileInfo var err error name, _ = strings.CutSuffix(name, filepath.Ext(name)) if f, err = os.Open(dir); err == nil { defer f.Close() if fis, err = f.Readdir(0); err == nil { for _, fi := range fis { n, _ := strings.CutSuffix(fi.Name(), filepath.Ext(fi.Name())) if n != name { continue } path := filepath.Join(dir, fi.Name()) var af *AudioFile if af, err = NewAudio(path); err == nil && af.SampleRate > 0 { return path, true } } } } return "", false}
package main
import (
"bytes"
"io"
"io/ioutil"
"os"
"path/filepath"
"strings"
"git.sr.ht/~ft/cue"
"github.com/asdfsx/gochardet"
"golang.org/x/text/encoding"
"golang.org/x/text/encoding/ianaindex"
)
var pathReplaceChars func(string) string
func init() {
r := strings.NewReplacer(
`/`, `∕`,
`"`, `“`,
`?`, `？`,
`*`, `∗`,
`\`, `⧵`,
`|`, `∣`,
`;`, `;`,
`:`, `∶`,
`<`, `‹`,
`>`, `›`,
)
pathReplaceChars = r.Replace
}
func decoderToUTF8For(b []byte) (dec *encoding.Decoder, err error) {
var best *chardet.Result
var enc encoding.Encoding
if best, err = chardet.NewTextDetector().DetectBest(b); err != nil {
return
} else if best.Confidence >= 25 {
if enc, err = ianaindex.IANA.Encoding(best.Charset); err != nil {
err = nil
}
}
if enc == nil {
enc = encoding.Nop
}
dec = enc.NewDecoder()
return
}
func openFileUTF8(path string) (r io.ReadCloser, err error) {
if r, err = os.Open(path); err != nil {
return
}
defer r.Close()
buf := new(bytes.Buffer)
if _, err = buf.ReadFrom(r); err != nil {
return
}
var dec *encoding.Decoder
if dec, err = decoderToUTF8For(buf.Bytes()); err != nil {
return
}
r = ioutil.NopCloser(dec.Reader(buf))
return
}
func cueSheetFromBytes(raw []byte) (sheet *cue.Sheet, err error) {
if sheet, err = cue.Parse(bytes.NewBuffer(raw), 0); err != nil {
return
}
buf := new(bytes.Buffer)
buf.WriteString(sheet.Performer)
buf.WriteString(sheet.Songwriter)
buf.WriteString(sheet.Title)
for _, f := range sheet.Files {
if f.Type == cue.FileTypeWave {
for _, t := range f.Tracks {
buf.WriteString(t.Title)
}
buf.WriteString(f.Name)
}
}
var dec *encoding.Decoder
if dec, err = decoderToUTF8For(buf.Bytes()); err == nil {
sheet, err = cue.Parse(dec.Reader(bytes.NewBuffer(raw)), 0)
}
return
}
func findAudioFile(dir, name string) (string, bool) {
var f *os.File
var fis []os.FileInfo
var err error
name, _ = strings.CutSuffix(name, filepath.Ext(name))
if f, err = os.Open(dir); err == nil {
defer f.Close()
if fis, err = f.Readdir(0); err == nil {
for _, fi := range fis {
n, _ := strings.CutSuffix(fi.Name(), filepath.Ext(fi.Name()))
if n != name {
continue
}
path := filepath.Join(dir, fi.Name())
var af *AudioFile
if af, err = NewAudio(path); err == nil && af.SampleRate > 0 {
return path, true
}
}
}
}
return "", false
}