🎇 webdav unfinished

server/webdav/file.go

@@ -0,0 +1,162 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package webdav
+
+import (
+	"context"
+	"fmt"
+	"github.com/Xhofe/alist/conf"
+	"github.com/Xhofe/alist/drivers"
+	"github.com/Xhofe/alist/model"
+	"github.com/Xhofe/alist/utils"
+	"net/http"
+	"path"
+	"path/filepath"
+	"strings"
+)
+
+type FileSystem struct {}
+
+func ParsePath(rawPath string) (*model.Account, string, drivers.Driver, error) {
+	var path, name string
+	switch model.AccountsCount() {
+	case 0:
+		return nil, "", nil, fmt.Errorf("no accounts,please add one first")
+	case 1:
+		path = rawPath
+		break
+	default:
+		paths := strings.Split(rawPath, "/")
+		path = "/" + strings.Join(paths[2:], "/")
+		name = paths[1]
+	}
+	account, ok := model.GetAccount(name)
+	if !ok {
+		return nil, "", nil, fmt.Errorf("no [%s] account", name)
+	}
+	driver, ok := drivers.GetDriver(account.Type)
+	if !ok {
+		return nil, "", nil, fmt.Errorf("no [%s] driver", account.Type)
+	}
+	return &account, path, driver, nil
+}
+
+func (fs *FileSystem) File(rawPath string) (*model.File,error) {
+	rawPath = utils.ParsePath(rawPath)
+	if model.AccountsCount() > 1 && rawPath == "/" {
+		return &model.File{
+			Name:      "root",
+			Size:      0,
+			Type:      conf.FOLDER,
+			Driver:    "root",
+			UpdatedAt: nil,
+		},nil
+	}
+	account, path_, driver, err := ParsePath(rawPath)
+	if err != nil {
+		return nil, err
+	}
+	return driver.File(path_,account)
+}
+
+func (fs *FileSystem) Files(rawPath string) ([]model.File,error) {
+	rawPath = utils.ParsePath(rawPath)
+	if model.AccountsCount() > 1 && rawPath == "/" {
+		files, err := model.GetAccountFiles()
+		if err != nil {
+			return nil, err
+		}
+		return files,nil
+	}
+	account, path_, driver, err := ParsePath(rawPath)
+	if err != nil {
+		return nil, err
+	}
+	return driver.Files(path_,account)
+}
+
+func (fs *FileSystem) Link(rawPath string) (string, error) {
+	rawPath = utils.ParsePath(rawPath)
+	if model.AccountsCount() > 1 && rawPath == "/" {
+		// error
+	}
+	account, path_, driver, err := ParsePath(rawPath)
+	if err != nil {
+		return "", err
+	}
+	return driver.Link(path_,account)
+}
+
+func (fs *FileSystem) CreateDirectory(ctx context.Context, reqPath string) (interface{}, error) {
+	return nil, nil
+}
+
+// slashClean is equivalent to but slightly more efficient than
+// path.Clean("/" + name).
+func slashClean(name string) string {
+	if name == "" || name[0] != '/' {
+		name = "/" + name
+	}
+	return path.Clean(name)
+}
+
+// moveFiles moves files and/or directories from src to dst.
+//
+// See section 9.9.4 for when various HTTP status codes apply.
+func moveFiles(ctx context.Context, fs *FileSystem, src FileInfo, dst string, overwrite bool) (status int, err error) {
+
+	return http.StatusNoContent, nil
+}
+
+// copyFiles copies files and/or directories from src to dst.
+//
+// See section 9.8.5 for when various HTTP status codes apply.
+func copyFiles(ctx context.Context, fs *FileSystem, src FileInfo, dst string, overwrite bool, depth int, recursion int) (status int, err error) {
+
+	return http.StatusNoContent, nil
+}
+
+// walkFS traverses filesystem fs starting at name up to depth levels.
+//
+// Allowed values for depth are 0, 1 or infiniteDepth. For each visited node,
+// walkFS calls walkFn. If a visited file system node is a directory and
+// walkFn returns filepath.SkipDir, walkFS will skip traversal of this node.
+func walkFS(
+	ctx context.Context,
+	fs *FileSystem,
+	depth int,
+	name string,
+	info FileInfo,
+	walkFn func(reqPath string, info FileInfo, err error) error) error {
+	// This implementation is based on Walk's code in the standard path/filepath package.
+	err := walkFn(name, info, nil)
+	if err != nil {
+		if info.IsDir() && err == filepath.SkipDir {
+			return nil
+		}
+		return err
+	}
+	if !info.IsDir() || depth == 0 {
+		return nil
+	}
+	if depth == 1 {
+		depth = 0
+	}
+
+	files, err := fs.Files(name)
+	if err != nil {
+		return err
+	}
+	for _, fileInfo := range files {
+		filename := path.Join(name, fileInfo.Name)
+		err = walkFS(ctx, fs, depth, filename, &fileInfo, walkFn)
+		if err != nil {
+			if !fileInfo.IsDir() || err != filepath.SkipDir {
+				return err
+			}
+		}
+	}
+	return nil
+}