145 lines
3.8 KiB
Go
145 lines
3.8 KiB
Go
package extractor
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import (
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"archive/tar"
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"compress/gzip"
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"context"
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"fmt"
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"io"
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"os"
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"path/filepath"
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"strings"
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"gitea.loveuer.com/yizhisec/pkg3/logger"
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)
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type Options struct {
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OnProgress func(filename string, index int, total int)
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IsGzipped *bool
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}
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type Option func(*Options)
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func WithProgress(callback func(filename string, index int, total int)) Option {
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return func(o *Options) {
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o.OnProgress = callback
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}
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}
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func WithGzipCompression(isGzipped bool) Option {
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return func(o *Options) {
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o.IsGzipped = &isGzipped
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}
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}
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func Extract(ctx context.Context, src, destDir string, opts ...Option) error {
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options := &Options{}
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for _, opt := range opts {
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opt(options)
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}
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logger.Debug("开始解压: %s -> %s", src, destDir)
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f, err := os.Open(src)
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if err != nil {
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logger.Debug("打开源文件失败 %s: %v", src, err)
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return fmt.Errorf("failed to open source file: %w", err)
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}
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defer f.Close()
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var reader io.Reader = f
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var isGzipped bool
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if options.IsGzipped != nil {
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isGzipped = *options.IsGzipped
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} else {
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isGzipped = strings.HasSuffix(strings.ToLower(src), ".tar.gz") || strings.HasSuffix(strings.ToLower(src), ".tgz")
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}
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if isGzipped {
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gzReader, err := gzip.NewReader(f)
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if err != nil {
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logger.Debug("创建 gzip reader 失败: %v", err)
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return fmt.Errorf("failed to create gzip reader: %w", err)
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}
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defer gzReader.Close()
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reader = gzReader
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}
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if err := extractTar(ctx, reader, destDir, options); err != nil {
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return err
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}
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logger.Debug("解压完成: %s", src)
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return nil
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}
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func extractTar(ctx context.Context, r io.Reader, destDir string, options *Options) error {
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tarReader := tar.NewReader(r)
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fileCount := 0
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totalFiles := 0
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for {
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if ctx.Err() != nil {
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return ctx.Err()
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}
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header, err := tarReader.Next()
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if err == io.EOF {
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break
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}
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if err != nil {
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logger.Debug("读取 tar 条目失败: %v", err)
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return fmt.Errorf("failed to read tar header: %w", err)
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}
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target := filepath.Join(destDir, header.Name)
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logger.Debug("解压文件: %s", header.Name)
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if options.OnProgress != nil {
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options.OnProgress(header.Name, fileCount, totalFiles)
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}
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switch header.Typeflag {
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case tar.TypeDir:
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if err := os.MkdirAll(target, os.FileMode(header.Mode)); err != nil {
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logger.Debug("创建目录失败 %s: %v", target, err)
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return fmt.Errorf("failed to create directory %s: %w", target, err)
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}
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case tar.TypeReg:
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if err := os.MkdirAll(filepath.Dir(target), 0755); err != nil {
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logger.Debug("创建父目录失败 %s: %v", filepath.Dir(target), err)
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return fmt.Errorf("failed to create parent directory: %w", err)
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}
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outFile, err := os.OpenFile(target, os.O_CREATE|os.O_RDWR|os.O_TRUNC, os.FileMode(header.Mode))
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if err != nil {
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logger.Debug("创建文件失败 %s: %v", target, err)
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return fmt.Errorf("failed to create file %s: %w", target, err)
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}
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if _, err := io.Copy(outFile, tarReader); err != nil {
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outFile.Close()
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logger.Debug("写入文件失败 %s: %v", target, err)
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return fmt.Errorf("failed to write file %s: %w", target, err)
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}
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outFile.Close()
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fileCount++
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case tar.TypeSymlink:
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if err := os.MkdirAll(filepath.Dir(target), 0755); err != nil {
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logger.Debug("创建符号链接父目录失败 %s: %v", filepath.Dir(target), err)
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return fmt.Errorf("failed to create parent directory for symlink: %w", err)
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}
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os.Remove(target)
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if err := os.Symlink(header.Linkname, target); err != nil {
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logger.Debug("创建符号链接失败 %s -> %s: %v", target, header.Linkname, err)
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return fmt.Errorf("failed to create symlink %s -> %s: %w", target, header.Linkname, err)
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}
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fileCount++
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default:
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logger.Debug("跳过不支持的文件类型: %s (type: %v)", header.Name, header.Typeflag)
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}
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}
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logger.Debug("解压完成，共 %d 个文件", fileCount)
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return nil
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}
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