vendor deps
This commit is contained in:
parent
9280224acb
commit
b75459d7b3
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*_vfsdata.go
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.*.sw*
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.DS_Store
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AJ ONeal <aj@therootcompany.com> (https://therootcompany.com)
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The MIT License (MIT)
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Copyright (c) 2020 The vfscopy Authors
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Copyright (c) 2018 otiai10
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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# [vfscopy](https://git.rootprojects.org/root/vfscopy)
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Recursively copy a Virtual FileSystem, such as
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[http.FileSystem](https://golang.org/pkg/net/http/#FileSystem),
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to a native file system destination.
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Works with any file system that implements http.FileSystem,
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including `vfsgen`, `fileb0x`, `gobindata` and most others.
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## Example: native file system (os)
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```go
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httpfs := http.Dir("/tmp/public/")
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vfs := vfscopy.NewVFS(httpfs)
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if err := vfscopy.CopyAll(vfs, ".", "/tmp/dst/"); nil != err {
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fmt.Fprintf(os.Stderr, "couldn't copy vfs: %v\n", err)
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}
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```
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## Example: vfsgen
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**Note**: `vfsgen` does not support symlinks or file permissions.
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```go
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package main
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import (
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"fmt"
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"git.rootprojects.org/root/vfscopy"
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// vfsgen-generated file system
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"git.example.com/org/project/assets"
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)
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func main() {
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vfs := vfscopy.NewVFS(assets.Assets)
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if err := vfscopy.CopyAll(vfs, ".", "/tmp/dst/"); nil != err {
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fmt.Fprintf(os.Stderr, "couldn't copy vfs: %v\n", err)
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}
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fmt.Println("Done.")
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}
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```
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## Test
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```bash
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# Generate the test virtual file system
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go generate ./...
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# Run the tests
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go test ./...
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```
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# License
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The MIT License (MIT)
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We used the recursive native file system copy implementation at
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https://github.com/otiai10/copy as a starting point and added
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virtual file system support.
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package vfscopy
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import (
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"io"
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"os"
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"path/filepath"
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)
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const (
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// tmpPermissionForDirectory makes the destination directory writable,
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// so that stuff can be copied recursively even if any original directory is NOT writable.
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// See https://github.com/otiai10/copy/pull/9 for more information.
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tmpPermissionForDirectory = os.FileMode(0755)
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)
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// CopyAll copies src to dest, doesn't matter if src is a directory or a file.
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func CopyAll(vfs FileSystem, src, dest string, opt ...Options) error {
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// FYI: os.Open does a proper lstat
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f, err := vfs.Open(src)
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if err != nil {
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return err
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}
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info, err := f.Stat()
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if err != nil {
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return err
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}
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return switchboard(vfs, src, dest, f, info, assure(opt...))
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}
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// switchboard switches proper copy functions regarding file type, etc...
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// If there would be anything else here, add a case to this switchboard.
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func switchboard(
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vfs FileSystem, src, dest string, f File, info os.FileInfo, opt Options,
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) error {
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switch {
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case info.Mode()&os.ModeSymlink != 0:
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// TODO
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return onsymlink(vfs, src, dest, opt)
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case info.IsDir():
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return dcopy(vfs, src, dest, f, info, opt)
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default:
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return fcopy(vfs, src, dest, f, info, opt)
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}
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}
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// copy decide if this src should be copied or not.
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// Because this "copy" could be called recursively,
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// "info" MUST be given here, NOT nil.
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func copy(vfs FileSystem, src, dest string, f File, info os.FileInfo, opt Options) error {
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skip, err := opt.Skip(src)
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if err != nil {
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return err
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}
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if skip {
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return nil
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}
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return switchboard(vfs, src, dest, f, info, opt)
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}
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// fcopy is for just a file,
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// with considering existence of parent directory
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// and file permission.
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func fcopy(vfs FileSystem, src, dest string, f File, info os.FileInfo, opt Options) (err error) {
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if err = os.MkdirAll(filepath.Dir(dest), os.ModePerm); err != nil {
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return
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}
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df, err := os.Create(dest)
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if err != nil {
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return
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}
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defer fclose(df, &err)
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if err = os.Chmod(df.Name(), info.Mode()|opt.AddPermission); err != nil {
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return
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}
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s, err := vfs.Open(src)
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if err != nil {
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return
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}
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defer fclose(s, &err)
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if _, err = io.Copy(df, s); err != nil {
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return
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}
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if opt.Sync {
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err = df.Sync()
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}
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return
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}
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// dcopy is for a directory,
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// with scanning contents inside the directory
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// and pass everything to "copy" recursively.
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func dcopy(vfs FileSystem, srcdir, destdir string, d File, info os.FileInfo, opt Options) (err error) {
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originalMode := info.Mode()
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// Make dest dir with 0755 so that everything writable.
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if err = os.MkdirAll(destdir, tmpPermissionForDirectory); err != nil {
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return
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}
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// Recover dir mode with original one.
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defer chmod(destdir, originalMode|opt.AddPermission, &err)
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fileInfos, err := d.Readdir(-1)
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if err != nil {
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return
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}
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for _, newInfo := range fileInfos {
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cs, cd := filepath.Join(
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srcdir, newInfo.Name()),
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filepath.Join(destdir, newInfo.Name())
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f, err := vfs.Open(cs)
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if nil != err {
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return err
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}
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if err := copy(vfs, cs, cd, f, newInfo, opt); err != nil {
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// If any error, exit immediately
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return err
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}
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}
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return
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}
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func onsymlink(vfs FileSystem, src, dest string, opt Options) error {
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switch opt.OnSymlink(src) {
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case Shallow:
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return lcopy(vfs, src, dest)
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/*
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case Deep:
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orig, err := vfs.EvalSymlinks(src)
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if err != nil {
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return err
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}
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f, err := vfs.Open(orig)
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if err != nil {
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return err
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}
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//info, err := os.Lstat(orig)
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info, err := f.Stat()
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if err != nil {
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return err
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}
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return copy(vfs, orig, dest, f, info, opt)
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*/
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case Skip:
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fallthrough
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default:
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return nil // do nothing
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}
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}
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// lcopy is for a symlink,
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// with just creating a new symlink by replicating src symlink.
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func lcopy(vfs FileSystem, src, dest string) error {
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src, err := vfs.Readlink(src)
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if err != nil {
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return err
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}
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// Create the directories on the path to the dest symlink.
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if err := os.MkdirAll(filepath.Dir(dest), os.ModePerm); err != nil {
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return err
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}
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return os.Symlink(src, dest)
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}
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// fclose ANYHOW closes file,
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// with asiging error raised during Close,
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// BUT respecting the error already reported.
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|
func fclose(f File, reported *error) {
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||||||
|
if err := f.Close(); *reported == nil {
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||||||
|
*reported = err
|
||||||
|
}
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||||||
|
}
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||||||
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||||||
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// chmod ANYHOW changes file mode,
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||||||
|
// with asiging error raised during Chmod,
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||||||
|
// BUT respecting the error already reported.
|
||||||
|
func chmod(dir string, mode os.FileMode, reported *error) {
|
||||||
|
if err := os.Chmod(dir, mode); *reported == nil {
|
||||||
|
*reported = err
|
||||||
|
}
|
||||||
|
}
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||||||
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|
||||||
|
// assure Options struct, should be called only once.
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||||||
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// All optional values MUST NOT BE nil/zero after assured.
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||||||
|
func assure(opts ...Options) Options {
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||||||
|
if len(opts) == 0 {
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||||||
|
return getDefaultOptions()
|
||||||
|
}
|
||||||
|
defopt := getDefaultOptions()
|
||||||
|
if opts[0].OnSymlink == nil {
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||||||
|
opts[0].OnSymlink = defopt.OnSymlink
|
||||||
|
}
|
||||||
|
if opts[0].Skip == nil {
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||||||
|
opts[0].Skip = defopt.Skip
|
||||||
|
}
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return opts[0]
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||||||
|
}
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@ -0,0 +1,9 @@
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|
module git.rootprojects.org/root/vfscopy
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|
|
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|
go 1.15
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|
|
||||||
|
require (
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|
github.com/shurcooL/httpfs v0.0.0-20190707220628-8d4bc4ba7749 // indirect
|
||||||
|
github.com/shurcooL/vfsgen v0.0.0-20200824052919-0d455de96546
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||||||
|
golang.org/x/tools v0.0.0-20201023174141-c8cfbd0f21e6 // indirect
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|
)
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@ -0,0 +1,26 @@
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|
github.com/shurcooL/httpfs v0.0.0-20190707220628-8d4bc4ba7749 h1:bUGsEnyNbVPw06Bs80sCeARAlK8lhwqGyi6UT8ymuGk=
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||||||
|
github.com/shurcooL/httpfs v0.0.0-20190707220628-8d4bc4ba7749/go.mod h1:ZY1cvUeJuFPAdZ/B6v7RHavJWZn2YPVFQ1OSXhCGOkg=
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||||||
|
github.com/shurcooL/vfsgen v0.0.0-20200824052919-0d455de96546 h1:pXY9qYc/MP5zdvqWEUH6SjNiu7VhSjuVFTFiTcphaLU=
|
||||||
|
github.com/shurcooL/vfsgen v0.0.0-20200824052919-0d455de96546/go.mod h1:TrYk7fJVaAttu97ZZKrO9UbRa8izdowaMIZcxYMbVaw=
|
||||||
|
github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
|
||||||
|
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
|
||||||
|
golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
|
||||||
|
golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
|
||||||
|
golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
|
||||||
|
golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
|
||||||
|
golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
|
||||||
|
golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
|
||||||
|
golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
|
||||||
|
golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
|
||||||
|
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
|
||||||
|
golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||||
|
golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||||
|
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
|
||||||
|
golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
|
||||||
|
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
|
||||||
|
golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
|
||||||
|
golang.org/x/tools v0.0.0-20201023174141-c8cfbd0f21e6 h1:rbvTkL9AkFts1cgI78+gG6Yu1pwaqX6hjSJAatB78E4=
|
||||||
|
golang.org/x/tools v0.0.0-20201023174141-c8cfbd0f21e6/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
|
||||||
|
golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
|
||||||
|
golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
|
||||||
|
golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
|
||||||
|
|
@ -0,0 +1,44 @@
|
||||||
|
package vfscopy
|
||||||
|
|
||||||
|
import "os"
|
||||||
|
|
||||||
|
// Options specifies optional actions on copying.
|
||||||
|
type Options struct {
|
||||||
|
// OnSymlink can specify what to do on symlink
|
||||||
|
OnSymlink func(src string) SymlinkAction
|
||||||
|
// Skip can specify which files should be skipped
|
||||||
|
Skip func(src string) (bool, error)
|
||||||
|
// AddPermission to every entities,
|
||||||
|
// NO MORE THAN 0777
|
||||||
|
AddPermission os.FileMode
|
||||||
|
// Sync file after copy.
|
||||||
|
// Useful in case when file must be on the disk
|
||||||
|
// (in case crash happens, for example),
|
||||||
|
// at the expense of some performance penalty
|
||||||
|
Sync bool
|
||||||
|
}
|
||||||
|
|
||||||
|
// SymlinkAction represents what to do on symlink.
|
||||||
|
type SymlinkAction int
|
||||||
|
|
||||||
|
const (
|
||||||
|
// Shallow creates new symlink to the dest of symlink.
|
||||||
|
Shallow SymlinkAction = iota
|
||||||
|
// Skip does nothing with symlink.
|
||||||
|
Skip
|
||||||
|
)
|
||||||
|
|
||||||
|
// getDefaultOptions provides default options,
|
||||||
|
// which would be modified by usage-side.
|
||||||
|
func getDefaultOptions() Options {
|
||||||
|
return Options{
|
||||||
|
OnSymlink: func(string) SymlinkAction {
|
||||||
|
return Shallow // Do shallow copy
|
||||||
|
},
|
||||||
|
Skip: func(string) (bool, error) {
|
||||||
|
return false, nil // Don't skip
|
||||||
|
},
|
||||||
|
AddPermission: 0, // Add nothing
|
||||||
|
Sync: false, // Do not sync
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,137 @@
|
||||||
|
package vfscopy
|
||||||
|
|
||||||
|
import (
|
||||||
|
"os"
|
||||||
|
"io"
|
||||||
|
"io/ioutil"
|
||||||
|
"path/filepath"
|
||||||
|
"path"
|
||||||
|
"strings"
|
||||||
|
"errors"
|
||||||
|
"net/http"
|
||||||
|
)
|
||||||
|
|
||||||
|
// FileSystem is a Virtual FileSystem with Symlink support
|
||||||
|
type FileSystem interface {
|
||||||
|
Open(name string) (File, error)
|
||||||
|
Readlink(name string) (string, error)
|
||||||
|
//EvalSymlinks(name string) (string, error)
|
||||||
|
}
|
||||||
|
|
||||||
|
// File is copied from http.File
|
||||||
|
type File interface {
|
||||||
|
io.Closer
|
||||||
|
io.Reader
|
||||||
|
io.Seeker
|
||||||
|
Readdir(count int) ([]os.FileInfo, error)
|
||||||
|
Stat() (os.FileInfo, error)
|
||||||
|
}
|
||||||
|
|
||||||
|
// VFS is a virtual FileSystem with Symlink support
|
||||||
|
type VFS struct {
|
||||||
|
FileSystem http.FileSystem
|
||||||
|
}
|
||||||
|
|
||||||
|
// Open opens a file relative to a virtual filesystem
|
||||||
|
func (v *VFS) Open(name string) (File, error) {
|
||||||
|
return v.FileSystem.Open(name)
|
||||||
|
}
|
||||||
|
|
||||||
|
// Readlink returns a "not implemented" error,
|
||||||
|
// which is okay because it is never called for http.FileSystem.
|
||||||
|
func (v *VFS) Readlink(name string) (string, error) {
|
||||||
|
f, err := v.FileSystem.Open(name)
|
||||||
|
if nil != err {
|
||||||
|
return "", err
|
||||||
|
}
|
||||||
|
b, err := ioutil.ReadAll(f)
|
||||||
|
if nil != err {
|
||||||
|
return "", err
|
||||||
|
}
|
||||||
|
return string(b), nil
|
||||||
|
}
|
||||||
|
|
||||||
|
// NewVFS gives an http.FileSystem (real) symlink support
|
||||||
|
func NewVFS(httpfs http.FileSystem) FileSystem {
|
||||||
|
return &VFS{ FileSystem: httpfs }
|
||||||
|
}
|
||||||
|
|
||||||
|
// Dir is an implementation of a Virtual FileSystem
|
||||||
|
type Dir string
|
||||||
|
|
||||||
|
// mapDirOpenError maps the provided non-nil error from opening name
|
||||||
|
// to a possibly better non-nil error. In particular, it turns OS-specific errors
|
||||||
|
// about opening files in non-directories into os.ErrNotExist. See Issue 18984.
|
||||||
|
func mapDirOpenError(originalErr error, name string) error {
|
||||||
|
if os.IsNotExist(originalErr) || os.IsPermission(originalErr) {
|
||||||
|
return originalErr
|
||||||
|
}
|
||||||
|
|
||||||
|
parts := strings.Split(name, string(filepath.Separator))
|
||||||
|
for i := range parts {
|
||||||
|
if parts[i] == "" {
|
||||||
|
continue
|
||||||
|
}
|
||||||
|
fi, err := os.Stat(strings.Join(parts[:i+1], string(filepath.Separator)))
|
||||||
|
if err != nil {
|
||||||
|
return originalErr
|
||||||
|
}
|
||||||
|
if !fi.IsDir() {
|
||||||
|
return os.ErrNotExist
|
||||||
|
}
|
||||||
|
}
|
||||||
|
return originalErr
|
||||||
|
}
|
||||||
|
|
||||||
|
func (d Dir) fullName(name string) (string, error) {
|
||||||
|
if filepath.Separator != '/' && strings.ContainsRune(name, filepath.Separator) {
|
||||||
|
return "", errors.New("http: invalid character in file path")
|
||||||
|
}
|
||||||
|
dir := string(d)
|
||||||
|
if dir == "" {
|
||||||
|
dir = "."
|
||||||
|
}
|
||||||
|
fullName := filepath.Join(dir, filepath.FromSlash(path.Clean("/"+name)))
|
||||||
|
return fullName, nil
|
||||||
|
}
|
||||||
|
|
||||||
|
// Open opens a file relative to a virtual filesystem
|
||||||
|
func (d Dir) Open(name string) (File, error) {
|
||||||
|
fullName, err := d.fullName(name)
|
||||||
|
if nil != err {
|
||||||
|
return nil, err
|
||||||
|
}
|
||||||
|
f, err := os.Open(fullName)
|
||||||
|
if err != nil {
|
||||||
|
return nil, mapDirOpenError(err, fullName)
|
||||||
|
}
|
||||||
|
return f, nil
|
||||||
|
}
|
||||||
|
|
||||||
|
// Readlink returns the destination of the named symbolic link.
|
||||||
|
func (d Dir) Readlink(name string) (string, error) {
|
||||||
|
name, err := d.fullName(name)
|
||||||
|
if nil != err {
|
||||||
|
return "", err
|
||||||
|
}
|
||||||
|
name, err = os.Readlink(name)
|
||||||
|
if err != nil {
|
||||||
|
return "", mapDirOpenError(err, name)
|
||||||
|
}
|
||||||
|
return name, nil
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
// EvalSymlinks returns the destination of the named symbolic link.
|
||||||
|
func (d Dir) EvalSymlinks(name string) (string, error) {
|
||||||
|
name, err := d.fullName(name)
|
||||||
|
if nil != err {
|
||||||
|
return "", err
|
||||||
|
}
|
||||||
|
name, err = filepath.EvalSymlinks(name)
|
||||||
|
if err != nil {
|
||||||
|
return "", mapDirOpenError(err, name)
|
||||||
|
}
|
||||||
|
return name, nil
|
||||||
|
}
|
||||||
|
*/
|
||||||
Loading…
Reference in New Issue