使用archiver对压缩文件进行解压

pkg/filesystem/archive.go

@@ -2,11 +2,9 @@ package filesystem
 
 import (
 	"archive/zip"
-	"bytes"
 	"context"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"os"
 	"path"
 	"path/filepath"
@@ -18,8 +16,7 @@ import (
 	"github.com/cloudreve/Cloudreve/v3/pkg/filesystem/fsctx"
 	"github.com/cloudreve/Cloudreve/v3/pkg/util"
 	"github.com/gin-gonic/gin"
-	"golang.org/x/text/encoding/simplifiedchinese"
-	"golang.org/x/text/transform"
+	"github.com/mholt/archiver/v4"
 )
 
 /* ===============
@@ -206,21 +203,41 @@ func (fs *FileSystem) Decompress(ctx context.Context, src, dst string) error {
 	}
 	defer zipFile.Close()
 
-	_, err = io.Copy(zipFile, fileStream)
+	// 下载前先判断是否是可解压的格式
+	format, readStream, err := archiver.Identify(fs.FileTarget[0].SourceName, fileStream)
 	if err != nil {
-		util.Log().Warning("无法写入临时压缩文件 %s , %s", tempZipFilePath, err)
+		util.Log().Warning("无法识别文件格式 %s , %s", fs.FileTarget[0].SourceName, err)
 		return err
 	}
 
-	zipFile.Close()
-	fileStream.Close()
+	extractor, ok := format.(archiver.Extractor)
+	if !ok {
+		return fmt.Errorf("file not an extractor %s", fs.FileTarget[0].SourceName)
+	}
 
-	// 解压缩文件
-	r, err := zip.OpenReader(tempZipFilePath)
-	if err != nil {
-		return err
+	// 只有zip格式可以多个文件同时上传
+	var isZip bool
+	switch extractor.(type) {
+	case archiver.Zip:
+		extractor = archiver.Zip{TextEncoding: "gb18030"}
+		isZip = true
+	}
+
+	// 除了zip必须下载到本地，其余的可以边下载边解压
+	reader := readStream
+	if isZip {
+		_, err = io.Copy(zipFile, readStream)
+		if err != nil {
+			util.Log().Warning("无法写入临时压缩文件 %s , %s", tempZipFilePath, err)
+			return err
+		}
+
+		fileStream.Close()
+
+		// 设置文件偏移量
+		zipFile.Seek(0, io.SeekStart)
+		reader = zipFile
 	}
-	defer r.Close()
 
 	// 重设存储策略
 	fs.Policy = &fs.User.Policy
@@ -236,64 +253,64 @@ func (fs *FileSystem) Decompress(ctx context.Context, src, dst string) error {
 		worker <- i
 	}
 
-	for _, f := range r.File {
-		fileName := f.Name
-		// 处理非UTF-8编码
-		if f.NonUTF8 {
-			i := bytes.NewReader([]byte(fileName))
-			decoder := transform.NewReader(i, simplifiedchinese.GB18030.NewDecoder())
-			content, _ := ioutil.ReadAll(decoder)
-			fileName = string(content)
+	// 上传文件函数
+	uploadFunc := func(fileStream io.ReadCloser, size int64, savePath, rawPath string) {
+		defer func() {
+			if isZip {
+				worker <- 1
+				wg.Done()
+			}
+			if err := recover(); err != nil {
+				util.Log().Warning("上传压缩包内文件时出错")
+				fmt.Println(err)
+			}
+		}()
+
+		err := fs.UploadFromStream(ctx, &fsctx.FileStream{
+			File:        fileStream,
+			Size:        uint64(size),
+			Name:        path.Base(savePath),
+			VirtualPath: path.Dir(savePath),
+		}, true)
+		fileStream.Close()
+		if err != nil {
+			util.Log().Debug("无法上传压缩包内的文件%s , %s , 跳过", rawPath, err)
 		}
+	}
 
-		rawPath := util.FormSlash(fileName)
+	// 解压缩文件，回调函数如果出错会停止解压的下一步进行，全部return nil
+	err = extractor.Extract(ctx, reader, nil, func(ctx context.Context, f archiver.File) error {
+		rawPath := util.FormSlash(f.NameInArchive)
 		savePath := path.Join(dst, rawPath)
 		// 路径是否合法
 		if !strings.HasPrefix(savePath, util.FillSlash(path.Clean(dst))) {
-			return fmt.Errorf("%s: illegal file path", f.Name)
+			util.Log().Warning("%s: illegal file path", f.NameInArchive)
+			return nil
 		}
 
 		// 如果是目录
-		if f.FileInfo().IsDir() {
+		if f.FileInfo.IsDir() {
 			fs.CreateDirectory(ctx, savePath)
-			continue
+			return nil
 		}
 
 		// 上传文件
 		fileStream, err := f.Open()
 		if err != nil {
 			util.Log().Warning("无法打开压缩包内文件%s , %s , 跳过", rawPath, err)
-			continue
+			return nil
 		}
 
-		select {
-		case <-worker:
+		if !isZip {
+			uploadFunc(fileStream, f.FileInfo.Size(), savePath, rawPath)
+		} else {
+			<-worker
 			wg.Add(1)
-			go func(fileStream io.ReadCloser, size int64) {
-				defer func() {
-					worker <- 1
-					wg.Done()
-					if err := recover(); err != nil {
-						util.Log().Warning("上传压缩包内文件时出错")
-						fmt.Println(err)
-					}
-				}()
-
-				err = fs.UploadFromStream(ctx, &fsctx.FileStream{
-					File:        fileStream,
-					Size:        uint64(size),
-					Name:        path.Base(savePath),
-					VirtualPath: path.Dir(savePath),
-				}, true)
-				fileStream.Close()
-				if err != nil {
-					util.Log().Debug("无法上传压缩包内的文件%s , %s , 跳过", rawPath, err)
-				}
-			}(fileStream, f.FileInfo().Size())
+			go uploadFunc(fileStream, f.FileInfo.Size(), savePath, rawPath)
 		}
-
-	}
+		return nil
+	})
 	wg.Wait()
-	return nil
+	return err
 
 }

service/explorer/objects.go

@@ -127,9 +127,19 @@ func (service *ItemDecompressService) CreateDecompressTask(c *gin.Context) seria
 		return serializer.Err(serializer.CodeParamErr, "文件太大", nil)
 	}
 
-	// 必须是zip压缩包
-	if !strings.HasSuffix(file.Name, ".zip") {
-		return serializer.Err(serializer.CodeParamErr, "只能解压 ZIP 格式的压缩文件", nil)
+	// 支持的压缩格式后缀
+	var (
+		suffixes = []string{".zip", ".gz", ".xz", ".tar", ".rar"}
+		matched  bool
+	)
+	for _, suffix := range suffixes {
+		if strings.HasSuffix(file.Name, suffix) {
+			matched = true
+			break
+		}
+	}
+	if !matched {
+		return serializer.Err(serializer.CodeParamErr, "不支持该格式的压缩文件", nil)
 	}
 
 	// 创建任务