71 lines
1.5 KiB
Go
71 lines
1.5 KiB
Go
package oplcli
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import (
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"fmt"
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"os"
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"path/filepath"
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"regexp"
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"strings"
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)
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func scanGameFileForID(filename string) (string, error) {
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file, err := os.Open(filename)
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if err != nil {
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return "", fmt.Errorf("failed to open file: %w", err)
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}
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defer file.Close()
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const bufferSize = 1024 * 1024 // 1MB
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buffer := make([]byte, bufferSize)
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n, err := file.Read(buffer)
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if err != nil && n == 0 {
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return "", fmt.Errorf("failed to read file: %w", err)
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}
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pattern := regexp.MustCompile(`(SLUS|SLES|SLPS|SCUS|SCES|SCPS)[_-]?\d{3}[\._]\d{2}`)
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match := pattern.Find(buffer[:n])
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if match != nil {
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gameID := string(match)
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return normalizeGameID(gameID), nil
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}
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return "", fmt.Errorf("no PS2 game ID found in file")
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}
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func normalizeGameID(id string) string {
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s := strings.ReplaceAll(id, "_", "-")
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s = strings.ReplaceAll(s, ".", "")
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s = strings.ToUpper(s)
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return s
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}
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func renameGameFile(filePath, gameName string) (string, error) {
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ext := filepath.Ext(filePath)
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dir := filepath.Dir(filePath)
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newPath := filepath.Join(dir, gameName+ext)
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if filePath == newPath {
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return filePath, nil
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}
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// Do not overwrite existing files
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if _, err := os.Stat(newPath); err == nil {
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return "", fmt.Errorf("file already exists: %s", newPath)
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} else if !os.IsNotExist(err) {
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return "", fmt.Errorf("failed to check destination: %w", err)
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}
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// rename file
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err := os.Rename(filePath, newPath)
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if err != nil {
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return "", fmt.Errorf("failed to rename file: %w", err)
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}
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return newPath, nil
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}
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