chore: not WIP anymore

README.md

@@ -1,6 +1,6 @@
 # lrc-cli
 
-[WIP] A CLI tool for LRC.
+A CLI tool for LRC.
 See [releases](https://git.owu.one/starset-mirror/lrc-cli/releases) for binaries.
 
 ## Usage

convert.go

@@ -0,0 +1,122 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+func convert(args []string) {
+	if len(args) < 2 {
+		fmt.Println(CONVERT_USAGE)
+		return
+	}
+
+	sourceFile := args[0]
+	targetFile := args[1]
+
+	sourceFmt := strings.TrimPrefix(filepath.Ext(sourceFile), ".")
+	targetFmt := strings.TrimPrefix(filepath.Ext(targetFile), ".")
+
+	switch sourceFmt {
+	case "lrc":
+		convertLyrics(sourceFile, targetFile, targetFmt)
+	case "srt":
+		convertSRT(sourceFile, targetFile, targetFmt)
+	default:
+		fmt.Printf("unsupported source file format: %s\n", sourceFmt)
+	}
+}
+
+func lrcToTxt(sourceFile, targetFile string) {
+	sourceLyrics, err := parseLyrics(sourceFile)
+	if err != nil {
+		fmt.Println("Error parsing source lyrics file:", err)
+		return
+	}
+
+	file, err := os.Create(targetFile)
+	if err != nil {
+		fmt.Println("Error creating target file:", err)
+		return
+	}
+	defer file.Close()
+
+	for _, content := range sourceLyrics.Content {
+		fmt.Fprintln(file, content)
+	}
+}
+
+func lrcToSrt(sourceFile, targetFile string) {
+	sourceLyrics, err := parseLyrics(sourceFile)
+	if err != nil {
+		fmt.Println("Error parsing source lyrics file:", err)
+		return
+	}
+
+	file, err := os.Create(targetFile)
+	if err != nil {
+		fmt.Println("Error creating target file:", err)
+		return
+	}
+	defer file.Close()
+
+	for i, content := range sourceLyrics.Content {
+		startTime := sourceLyrics.Timeline[i]
+		var endTime Timestamp
+		if i < len(sourceLyrics.Timeline)-1 {
+			endTime = sourceLyrics.Timeline[i+1]
+		} else {
+			endTime = addSeconds(startTime, 3)
+		}
+
+		fmt.Fprintf(file, "%d\n", i+1)
+		fmt.Fprintf(file, "%s --> %s\n", formatSRTTimestamp(startTime), formatSRTTimestamp(endTime))
+		fmt.Fprintf(file, "%s\n\n", content)
+	}
+}
+
+func srtToLrc(sourceFile, targetFile string) {
+	srtEntries, err := parseSRT(sourceFile)
+	if err != nil {
+		fmt.Println("Error parsing source SRT file:", err)
+		return
+	}
+
+	lyrics := Lyrics{
+		Metadata: make(map[string]string),
+		Timeline: make([]Timestamp, len(srtEntries)),
+		Content:  make([]string, len(srtEntries)),
+	}
+
+	for i, entry := range srtEntries {
+		lyrics.Timeline[i] = entry.StartTime
+		lyrics.Content[i] = entry.Content
+	}
+
+	err = saveLyrics(targetFile, lyrics)
+	if err != nil {
+		fmt.Println("Error saving LRC file:", err)
+		return
+	}
+}
+
+func srtToTxt(sourceFile, targetFile string) {
+	srtEntries, err := parseSRT(sourceFile)
+	if err != nil {
+		fmt.Println("Error parsing source SRT file:", err)
+		return
+	}
+
+	file, err := os.Create(targetFile)
+	if err != nil {
+		fmt.Println("Error creating target file:", err)
+		return
+	}
+	defer file.Close()
+
+	for _, entry := range srtEntries {
+		fmt.Fprintln(file, entry.Content)
+	}
+}

lrc.go

@@ -4,11 +4,77 @@ import (
 	"bufio"
 	"fmt"
 	"os"
-	"path/filepath"
 	"regexp"
+	"strconv"
 	"strings"
 )
 
+func parseTimestamp(timeStr string) (Timestamp, error) {
+	// remove brackets
+	timeStr = strings.Trim(timeStr, "[]")
+
+	parts := strings.Split(timeStr, ":")
+	var hours, minutes, seconds, milliseconds int
+	var err error
+
+	switch len(parts) {
+	case 2: // minutes:seconds.milliseconds
+		minutes, err = strconv.Atoi(parts[0])
+		if err != nil {
+			return Timestamp{}, err
+		}
+		secParts := strings.Split(parts[1], ".")
+		seconds, err = strconv.Atoi(secParts[0])
+		if err != nil {
+			return Timestamp{}, err
+		}
+		if len(secParts) > 1 {
+			milliseconds, err = strconv.Atoi(secParts[1])
+			if err != nil {
+				return Timestamp{}, err
+			}
+			// adjust milliseconds based on the number of digits
+			switch len(secParts[1]) {
+			case 1:
+				milliseconds *= 100
+			case 2:
+				milliseconds *= 10
+			}
+		}
+	case 3: // hours:minutes:seconds.milliseconds
+		hours, err = strconv.Atoi(parts[0])
+		if err != nil {
+			return Timestamp{}, err
+		}
+		minutes, err = strconv.Atoi(parts[1])
+		if err != nil {
+			return Timestamp{}, err
+		}
+		secParts := strings.Split(parts[2], ".")
+		seconds, err = strconv.Atoi(secParts[0])
+		if err != nil {
+			return Timestamp{}, err
+		}
+		if len(secParts) > 1 {
+			milliseconds, err = strconv.Atoi(secParts[1])
+			if err != nil {
+				return Timestamp{}, err
+			}
+			// adjust milliseconds based on the number of digits
+			switch len(secParts[1]) {
+			case 1:
+				milliseconds *= 100
+			case 2:
+				milliseconds *= 10
+			}
+		}
+	default:
+		return Timestamp{}, fmt.Errorf("invalid timestamp format")
+	}
+
+	return Timestamp{Hours: hours, Minutes: minutes, Seconds: seconds, Milliseconds: milliseconds}, nil
+}
+
 func parseLyrics(filePath string) (Lyrics, error) {
 	file, err := os.Open(filePath)
 	if err != nil {
@@ -27,9 +93,13 @@ func parseLyrics(filePath string) (Lyrics, error) {
 		line := scanner.Text()
 		if strings.HasPrefix(line, "[") && strings.Contains(line, "]") {
 			if timeLineRegex.MatchString(line) {
-				// Timeline Tag
-				time := timeLineRegex.FindString(line)
-				lyrics.Timeline = append(lyrics.Timeline, time)
+				// Timeline
+				timeStr := timeLineRegex.FindString(line)
+				timestamp, err := parseTimestamp(timeStr)
+				if err != nil {
+					return Lyrics{}, err
+				}
+				lyrics.Timeline = append(lyrics.Timeline, timestamp)
 				// Content
 				content := timeLineRegex.ReplaceAllString(line, "")
 				lyrics.Content = append(lyrics.Content, strings.TrimSpace(content))
@@ -64,7 +134,7 @@ func saveLyrics(filePath string, lyrics Lyrics) error {
 
 	// Write timeline and content
 	for i := 0; i < len(lyrics.Timeline); i++ {
-		fmt.Fprintf(file, "%s %s\n", lyrics.Timeline[i], lyrics.Content[i])
+		fmt.Fprintf(file, "%s %s\n", timestampToString(lyrics.Timeline[i]), lyrics.Content[i])
 	}
 
 	return nil
@@ -91,16 +161,14 @@ func syncLyrics(args []string) {
 		return
 	}
 
-	// Sync timeline
-	if len(sourceLyrics.Timeline) != len(targetLyrics.Timeline) {
-		fmt.Println("Warning: Timeline length mismatch")
-		return
-	}
 	minLength := len(sourceLyrics.Timeline)
 	if len(targetLyrics.Timeline) < minLength {
 		minLength = len(targetLyrics.Timeline)
+		fmt.Printf("Warning: Timeline length mismatch. Source: %d lines, Target: %d lines. Will sync the first %d lines.\n",
+			len(sourceLyrics.Timeline), len(targetLyrics.Timeline), minLength)
 	}
 
+	// Sync the timeline
 	for i := 0; i < minLength; i++ {
 		targetLyrics.Timeline[i] = sourceLyrics.Timeline[i]
 	}
@@ -114,39 +182,14 @@ func syncLyrics(args []string) {
 	}
 }
 
-// func printLyricsInfo(lyrics Lyrics) {
-// 	fmt.Println("Metadata:")
-// 	for key, value := range lyrics.Metadata {
-// 		fmt.Printf("%s: %s\n", key, value)
-// 	}
-
-// 	fmt.Println("\nTimeline:")
-// 	for _, time := range lyrics.Timeline {
-// 		fmt.Println(time)
-// 	}
-
-// 	fmt.Println("\nLyrics Content:")
-// 	for _, content := range lyrics.Content {
-// 		fmt.Println(content)
-// 	}
-// }
-
-func convertLyrics(args []string) {
-	if len(args) < 2 {
-		fmt.Println(CONVERT_USAGE)
-		return
-	}
-
-	sourceFile := args[0]
-	targetFile := args[1]
-
-	targetFmt := strings.TrimPrefix(filepath.Ext(targetFile), ".")
-
+func convertLyrics(sourceFile, targetFile, targetFmt string) {
 	switch targetFmt {
 	case "txt":
 		lrcToTxt(sourceFile, targetFile)
+	case "srt":
+		lrcToSrt(sourceFile, targetFile)
 	default:
-		fmt.Println("Unsupported target format:", targetFmt)
+		fmt.Printf("unsupported target format: %s\n", targetFmt)
 	}
 }
 
@@ -173,21 +216,9 @@ func fmtLyrics(args []string) {
 	}
 }
 
-func lrcToTxt(sourceFile, targetFile string) {
-	sourceLyrics, err := parseLyrics(sourceFile)
-	if err != nil {
-		fmt.Println("Error parsing source lyrics file:", err)
-		return
-	}
-
-	file, err := os.Create(targetFile)
-	if err != nil {
-		fmt.Println("Error creating target file:", err)
-		return
-	}
-	defer file.Close()
-
-	for _, content := range sourceLyrics.Content {
-		fmt.Fprintln(file, content)
+func timestampToString(ts Timestamp) string {
+	if ts.Hours > 0 {
+		return fmt.Sprintf("[%02d:%02d:%02d.%03d]", ts.Hours, ts.Minutes, ts.Seconds, ts.Milliseconds)
 	}
+	return fmt.Sprintf("[%02d:%02d.%03d]", ts.Minutes, ts.Seconds, ts.Milliseconds)
 }

main.go

@@ -15,7 +15,7 @@ func main() {
 	case "sync":
 		syncLyrics(os.Args[2:])
 	case "convert":
-		convertLyrics(os.Args[2:])
+		convert(os.Args[2:])
 	case "fmt":
 		fmtLyrics(os.Args[2:])
 	case "version":

model.go

@@ -1,22 +1,39 @@
 package main
 
+type Timestamp struct {
+	Hours        int
+	Minutes      int
+	Seconds      int
+	Milliseconds int
+}
+
 type Lyrics struct {
 	Metadata map[string]string
-	Timeline []string
+	Timeline []Timestamp
 	Content  []string
 }
 
+type SRTEntry struct {
+	Number    int
+	StartTime Timestamp
+	EndTime   Timestamp
+	Content   string
+}
+
 const (
-	VERSION = "0.2.0"
+	VERSION = "0.3.0"
 	USAGE   = `Usage: lyc-cli [command] [options]
   Commands:
     sync	Synchronize timeline of two lyrics files
     convert	Convert lyrics file to another format
+    fmt		Format lyrics file
     help	Show help`
 
 	SYNC_USAGE    = `Usage: lyc-cli sync <source> <target>`
 	CONVERT_USAGE = `Usage: lyc-cli convert <source> <target>
   Note:
   Target format is determined by file extension. Supported formats:
-    .txt	Plain text format(No meta/timeline tags)`
+    .txt	Plain text format(No meta/timeline tags, only support as target format)
+    .srt	SubRip Subtitle format
+    .lrc	LRC format`
 )

srt.go

@@ -0,0 +1,86 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"strconv"
+	"strings"
+	"time"
+)
+
+func parseSRT(filePath string) ([]SRTEntry, error) {
+	file, err := os.Open(filePath)
+	if err != nil {
+		return nil, err
+	}
+	defer file.Close()
+
+	scanner := bufio.NewScanner(file)
+	var entries []SRTEntry
+	var currentEntry SRTEntry
+
+	for scanner.Scan() {
+		line := strings.TrimSpace(scanner.Text())
+		if line == "" {
+			if currentEntry.Number != 0 {
+				entries = append(entries, currentEntry)
+				currentEntry = SRTEntry{}
+			}
+			continue
+		}
+
+		if currentEntry.Number == 0 {
+			currentEntry.Number, _ = strconv.Atoi(line)
+		} else if currentEntry.StartTime.Hours == 0 {
+			times := strings.Split(line, " --> ")
+			currentEntry.StartTime = parseSRTTimestamp(times[0])
+			currentEntry.EndTime = parseSRTTimestamp(times[1])
+		} else {
+			currentEntry.Content += line + "\n"
+		}
+	}
+
+	if currentEntry.Number != 0 {
+		entries = append(entries, currentEntry)
+	}
+
+	return entries, scanner.Err()
+}
+
+func convertSRT(sourceFile, targetFile, targetFmt string) {
+	switch targetFmt {
+	case "txt":
+		srtToTxt(sourceFile, targetFile)
+	case "lrc":
+		srtToLrc(sourceFile, targetFile)
+	default:
+		fmt.Printf("unsupported target format: %s\n", targetFmt)
+	}
+}
+
+func formatSRTTimestamp(ts Timestamp) string {
+	return fmt.Sprintf("%02d:%02d:%02d,%03d", ts.Hours, ts.Minutes, ts.Seconds, ts.Milliseconds)
+}
+
+func parseSRTTimestamp(timeStr string) Timestamp {
+	t, _ := time.Parse("15:04:05,000", timeStr)
+	return Timestamp{
+		Hours:        t.Hour(),
+		Minutes:      t.Minute(),
+		Seconds:      t.Second(),
+		Milliseconds: t.Nanosecond() / 1e6,
+	}
+}
+
+// basically for the last line of lrc
+func addSeconds(ts Timestamp, seconds int) Timestamp {
+	t := time.Date(0, 1, 1, ts.Hours, ts.Minutes, ts.Seconds, ts.Milliseconds*1e6, time.UTC)
+	t = t.Add(time.Duration(seconds) * time.Second)
+	return Timestamp{
+		Hours:        t.Hour(),
+		Minutes:      t.Minute(),
+		Seconds:      t.Second(),
+		Milliseconds: t.Nanosecond() / 1e6,
+	}
+}