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Migrate from snapClient.VolumesnapshotV1alpha1Client to

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snapClient.SnapshotV1alpha1Client and also update kube dependency

Signed-off-by: Humble Chirammal <hchiramm@redhat.com>
This commit is contained in:
Humble Chirammal
2019-06-24 14:38:09 +05:30
committed by mergify[bot]
parent 3bc6771df8
commit 22ff5c0911
1031 changed files with 34242 additions and 177906 deletions
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174
vendor/github.com/spf13/afero/LICENSE.txt generated vendored Normal file
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Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
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8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
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108
vendor/github.com/spf13/afero/afero.go generated vendored Normal file
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// Copyright © 2014 Steve Francia <spf@spf13.com>.
// Copyright 2013 tsuru authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package afero provides types and methods for interacting with the filesystem,
// as an abstraction layer.
// Afero also provides a few implementations that are mostly interoperable. One that
// uses the operating system filesystem, one that uses memory to store files
// (cross platform) and an interface that should be implemented if you want to
// provide your own filesystem.
package afero
import (
"errors"
"io"
"os"
"time"
)
type Afero struct {
Fs
}
// File represents a file in the filesystem.
type File interface {
io.Closer
io.Reader
io.ReaderAt
io.Seeker
io.Writer
io.WriterAt
Name() string
Readdir(count int) ([]os.FileInfo, error)
Readdirnames(n int) ([]string, error)
Stat() (os.FileInfo, error)
Sync() error
Truncate(size int64) error
WriteString(s string) (ret int, err error)
}
// Fs is the filesystem interface.
//
// Any simulated or real filesystem should implement this interface.
type Fs interface {
// Create creates a file in the filesystem, returning the file and an
// error, if any happens.
Create(name string) (File, error)
// Mkdir creates a directory in the filesystem, return an error if any
// happens.
Mkdir(name string, perm os.FileMode) error
// MkdirAll creates a directory path and all parents that does not exist
// yet.
MkdirAll(path string, perm os.FileMode) error
// Open opens a file, returning it or an error, if any happens.
Open(name string) (File, error)
// OpenFile opens a file using the given flags and the given mode.
OpenFile(name string, flag int, perm os.FileMode) (File, error)
// Remove removes a file identified by name, returning an error, if any
// happens.
Remove(name string) error
// RemoveAll removes a directory path and any children it contains. It
// does not fail if the path does not exist (return nil).
RemoveAll(path string) error
// Rename renames a file.
Rename(oldname, newname string) error
// Stat returns a FileInfo describing the named file, or an error, if any
// happens.
Stat(name string) (os.FileInfo, error)
// The name of this FileSystem
Name() string
//Chmod changes the mode of the named file to mode.
Chmod(name string, mode os.FileMode) error
//Chtimes changes the access and modification times of the named file
Chtimes(name string, atime time.Time, mtime time.Time) error
}
var (
ErrFileClosed = errors.New("File is closed")
ErrOutOfRange = errors.New("Out of range")
ErrTooLarge = errors.New("Too large")
ErrFileNotFound = os.ErrNotExist
ErrFileExists = os.ErrExist
ErrDestinationExists = os.ErrExist
)

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vendor/github.com/spf13/afero/basepath.go generated vendored Normal file
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package afero
import (
"os"
"path/filepath"
"runtime"
"strings"
"time"
)
var _ Lstater = (*BasePathFs)(nil)
// The BasePathFs restricts all operations to a given path within an Fs.
// The given file name to the operations on this Fs will be prepended with
// the base path before calling the base Fs.
// Any file name (after filepath.Clean()) outside this base path will be
// treated as non existing file.
//
// Note that it does not clean the error messages on return, so you may
// reveal the real path on errors.
type BasePathFs struct {
source Fs
path string
}
type BasePathFile struct {
File
path string
}
func (f *BasePathFile) Name() string {
sourcename := f.File.Name()
return strings.TrimPrefix(sourcename, filepath.Clean(f.path))
}
func NewBasePathFs(source Fs, path string) Fs {
return &BasePathFs{source: source, path: path}
}
// on a file outside the base path it returns the given file name and an error,
// else the given file with the base path prepended
func (b *BasePathFs) RealPath(name string) (path string, err error) {
if err := validateBasePathName(name); err != nil {
return name, err
}
bpath := filepath.Clean(b.path)
path = filepath.Clean(filepath.Join(bpath, name))
if !strings.HasPrefix(path, bpath) {
return name, os.ErrNotExist
}
return path, nil
}
func validateBasePathName(name string) error {
if runtime.GOOS != "windows" {
// Not much to do here;
// the virtual file paths all look absolute on *nix.
return nil
}
// On Windows a common mistake would be to provide an absolute OS path
// We could strip out the base part, but that would not be very portable.
if filepath.IsAbs(name) {
return os.ErrNotExist
}
return nil
}
func (b *BasePathFs) Chtimes(name string, atime, mtime time.Time) (err error) {
if name, err = b.RealPath(name); err != nil {
return &os.PathError{Op: "chtimes", Path: name, Err: err}
}
return b.source.Chtimes(name, atime, mtime)
}
func (b *BasePathFs) Chmod(name string, mode os.FileMode) (err error) {
if name, err = b.RealPath(name); err != nil {
return &os.PathError{Op: "chmod", Path: name, Err: err}
}
return b.source.Chmod(name, mode)
}
func (b *BasePathFs) Name() string {
return "BasePathFs"
}
func (b *BasePathFs) Stat(name string) (fi os.FileInfo, err error) {
if name, err = b.RealPath(name); err != nil {
return nil, &os.PathError{Op: "stat", Path: name, Err: err}
}
return b.source.Stat(name)
}
func (b *BasePathFs) Rename(oldname, newname string) (err error) {
if oldname, err = b.RealPath(oldname); err != nil {
return &os.PathError{Op: "rename", Path: oldname, Err: err}
}
if newname, err = b.RealPath(newname); err != nil {
return &os.PathError{Op: "rename", Path: newname, Err: err}
}
return b.source.Rename(oldname, newname)
}
func (b *BasePathFs) RemoveAll(name string) (err error) {
if name, err = b.RealPath(name); err != nil {
return &os.PathError{Op: "remove_all", Path: name, Err: err}
}
return b.source.RemoveAll(name)
}
func (b *BasePathFs) Remove(name string) (err error) {
if name, err = b.RealPath(name); err != nil {
return &os.PathError{Op: "remove", Path: name, Err: err}
}
return b.source.Remove(name)
}
func (b *BasePathFs) OpenFile(name string, flag int, mode os.FileMode) (f File, err error) {
if name, err = b.RealPath(name); err != nil {
return nil, &os.PathError{Op: "openfile", Path: name, Err: err}
}
sourcef, err := b.source.OpenFile(name, flag, mode)
if err != nil {
return nil, err
}
return &BasePathFile{sourcef, b.path}, nil
}
func (b *BasePathFs) Open(name string) (f File, err error) {
if name, err = b.RealPath(name); err != nil {
return nil, &os.PathError{Op: "open", Path: name, Err: err}
}
sourcef, err := b.source.Open(name)
if err != nil {
return nil, err
}
return &BasePathFile{File: sourcef, path: b.path}, nil
}
func (b *BasePathFs) Mkdir(name string, mode os.FileMode) (err error) {
if name, err = b.RealPath(name); err != nil {
return &os.PathError{Op: "mkdir", Path: name, Err: err}
}
return b.source.Mkdir(name, mode)
}
func (b *BasePathFs) MkdirAll(name string, mode os.FileMode) (err error) {
if name, err = b.RealPath(name); err != nil {
return &os.PathError{Op: "mkdir", Path: name, Err: err}
}
return b.source.MkdirAll(name, mode)
}
func (b *BasePathFs) Create(name string) (f File, err error) {
if name, err = b.RealPath(name); err != nil {
return nil, &os.PathError{Op: "create", Path: name, Err: err}
}
sourcef, err := b.source.Create(name)
if err != nil {
return nil, err
}
return &BasePathFile{File: sourcef, path: b.path}, nil
}
func (b *BasePathFs) LstatIfPossible(name string) (os.FileInfo, bool, error) {
name, err := b.RealPath(name)
if err != nil {
return nil, false, &os.PathError{Op: "lstat", Path: name, Err: err}
}
if lstater, ok := b.source.(Lstater); ok {
return lstater.LstatIfPossible(name)
}
fi, err := b.source.Stat(name)
return fi, false, err
}
// vim: ts=4 sw=4 noexpandtab nolist syn=go

290
vendor/github.com/spf13/afero/cacheOnReadFs.go generated vendored Normal file
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package afero
import (
"os"
"syscall"
"time"
)
// If the cache duration is 0, cache time will be unlimited, i.e. once
// a file is in the layer, the base will never be read again for this file.
//
// For cache times greater than 0, the modification time of a file is
// checked. Note that a lot of file system implementations only allow a
// resolution of a second for timestamps... or as the godoc for os.Chtimes()
// states: "The underlying filesystem may truncate or round the values to a
// less precise time unit."
//
// This caching union will forward all write calls also to the base file
// system first. To prevent writing to the base Fs, wrap it in a read-only
// filter - Note: this will also make the overlay read-only, for writing files
// in the overlay, use the overlay Fs directly, not via the union Fs.
type CacheOnReadFs struct {
base Fs
layer Fs
cacheTime time.Duration
}
func NewCacheOnReadFs(base Fs, layer Fs, cacheTime time.Duration) Fs {
return &CacheOnReadFs{base: base, layer: layer, cacheTime: cacheTime}
}
type cacheState int
const (
// not present in the overlay, unknown if it exists in the base:
cacheMiss cacheState = iota
// present in the overlay and in base, base file is newer:
cacheStale
// present in the overlay - with cache time == 0 it may exist in the base,
// with cacheTime > 0 it exists in the base and is same age or newer in the
// overlay
cacheHit
// happens if someone writes directly to the overlay without
// going through this union
cacheLocal
)
func (u *CacheOnReadFs) cacheStatus(name string) (state cacheState, fi os.FileInfo, err error) {
var lfi, bfi os.FileInfo
lfi, err = u.layer.Stat(name)
if err == nil {
if u.cacheTime == 0 {
return cacheHit, lfi, nil
}
if lfi.ModTime().Add(u.cacheTime).Before(time.Now()) {
bfi, err = u.base.Stat(name)
if err != nil {
return cacheLocal, lfi, nil
}
if bfi.ModTime().After(lfi.ModTime()) {
return cacheStale, bfi, nil
}
}
return cacheHit, lfi, nil
}
if err == syscall.ENOENT || os.IsNotExist(err) {
return cacheMiss, nil, nil
}
return cacheMiss, nil, err
}
func (u *CacheOnReadFs) copyToLayer(name string) error {
return copyToLayer(u.base, u.layer, name)
}
func (u *CacheOnReadFs) Chtimes(name string, atime, mtime time.Time) error {
st, _, err := u.cacheStatus(name)
if err != nil {
return err
}
switch st {
case cacheLocal:
case cacheHit:
err = u.base.Chtimes(name, atime, mtime)
case cacheStale, cacheMiss:
if err := u.copyToLayer(name); err != nil {
return err
}
err = u.base.Chtimes(name, atime, mtime)
}
if err != nil {
return err
}
return u.layer.Chtimes(name, atime, mtime)
}
func (u *CacheOnReadFs) Chmod(name string, mode os.FileMode) error {
st, _, err := u.cacheStatus(name)
if err != nil {
return err
}
switch st {
case cacheLocal:
case cacheHit:
err = u.base.Chmod(name, mode)
case cacheStale, cacheMiss:
if err := u.copyToLayer(name); err != nil {
return err
}
err = u.base.Chmod(name, mode)
}
if err != nil {
return err
}
return u.layer.Chmod(name, mode)
}
func (u *CacheOnReadFs) Stat(name string) (os.FileInfo, error) {
st, fi, err := u.cacheStatus(name)
if err != nil {
return nil, err
}
switch st {
case cacheMiss:
return u.base.Stat(name)
default: // cacheStale has base, cacheHit and cacheLocal the layer os.FileInfo
return fi, nil
}
}
func (u *CacheOnReadFs) Rename(oldname, newname string) error {
st, _, err := u.cacheStatus(oldname)
if err != nil {
return err
}
switch st {
case cacheLocal:
case cacheHit:
err = u.base.Rename(oldname, newname)
case cacheStale, cacheMiss:
if err := u.copyToLayer(oldname); err != nil {
return err
}
err = u.base.Rename(oldname, newname)
}
if err != nil {
return err
}
return u.layer.Rename(oldname, newname)
}
func (u *CacheOnReadFs) Remove(name string) error {
st, _, err := u.cacheStatus(name)
if err != nil {
return err
}
switch st {
case cacheLocal:
case cacheHit, cacheStale, cacheMiss:
err = u.base.Remove(name)
}
if err != nil {
return err
}
return u.layer.Remove(name)
}
func (u *CacheOnReadFs) RemoveAll(name string) error {
st, _, err := u.cacheStatus(name)
if err != nil {
return err
}
switch st {
case cacheLocal:
case cacheHit, cacheStale, cacheMiss:
err = u.base.RemoveAll(name)
}
if err != nil {
return err
}
return u.layer.RemoveAll(name)
}
func (u *CacheOnReadFs) OpenFile(name string, flag int, perm os.FileMode) (File, error) {
st, _, err := u.cacheStatus(name)
if err != nil {
return nil, err
}
switch st {
case cacheLocal, cacheHit:
default:
if err := u.copyToLayer(name); err != nil {
return nil, err
}
}
if flag&(os.O_WRONLY|syscall.O_RDWR|os.O_APPEND|os.O_CREATE|os.O_TRUNC) != 0 {
bfi, err := u.base.OpenFile(name, flag, perm)
if err != nil {
return nil, err
}
lfi, err := u.layer.OpenFile(name, flag, perm)
if err != nil {
bfi.Close() // oops, what if O_TRUNC was set and file opening in the layer failed...?
return nil, err
}
return &UnionFile{Base: bfi, Layer: lfi}, nil
}
return u.layer.OpenFile(name, flag, perm)
}
func (u *CacheOnReadFs) Open(name string) (File, error) {
st, fi, err := u.cacheStatus(name)
if err != nil {
return nil, err
}
switch st {
case cacheLocal:
return u.layer.Open(name)
case cacheMiss:
bfi, err := u.base.Stat(name)
if err != nil {
return nil, err
}
if bfi.IsDir() {
return u.base.Open(name)
}
if err := u.copyToLayer(name); err != nil {
return nil, err
}
return u.layer.Open(name)
case cacheStale:
if !fi.IsDir() {
if err := u.copyToLayer(name); err != nil {
return nil, err
}
return u.layer.Open(name)
}
case cacheHit:
if !fi.IsDir() {
return u.layer.Open(name)
}
}
// the dirs from cacheHit, cacheStale fall down here:
bfile, _ := u.base.Open(name)
lfile, err := u.layer.Open(name)
if err != nil && bfile == nil {
return nil, err
}
return &UnionFile{Base: bfile, Layer: lfile}, nil
}
func (u *CacheOnReadFs) Mkdir(name string, perm os.FileMode) error {
err := u.base.Mkdir(name, perm)
if err != nil {
return err
}
return u.layer.MkdirAll(name, perm) // yes, MkdirAll... we cannot assume it exists in the cache
}
func (u *CacheOnReadFs) Name() string {
return "CacheOnReadFs"
}
func (u *CacheOnReadFs) MkdirAll(name string, perm os.FileMode) error {
err := u.base.MkdirAll(name, perm)
if err != nil {
return err
}
return u.layer.MkdirAll(name, perm)
}
func (u *CacheOnReadFs) Create(name string) (File, error) {
bfh, err := u.base.Create(name)
if err != nil {
return nil, err
}
lfh, err := u.layer.Create(name)
if err != nil {
// oops, see comment about OS_TRUNC above, should we remove? then we have to
// remember if the file did not exist before
bfh.Close()
return nil, err
}
return &UnionFile{Base: bfh, Layer: lfh}, nil
}

22
vendor/github.com/spf13/afero/const_bsds.go generated vendored Normal file
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// Copyright © 2016 Steve Francia <spf@spf13.com>.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +build darwin openbsd freebsd netbsd dragonfly
package afero
import (
"syscall"
)
const BADFD = syscall.EBADF

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// Copyright © 2016 Steve Francia <spf@spf13.com>.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +build !darwin
// +build !openbsd
// +build !freebsd
// +build !dragonfly
// +build !netbsd
package afero
import (
"syscall"
)
const BADFD = syscall.EBADFD

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vendor/github.com/spf13/afero/copyOnWriteFs.go generated vendored Normal file
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package afero
import (
"fmt"
"os"
"path/filepath"
"syscall"
"time"
)
var _ Lstater = (*CopyOnWriteFs)(nil)
// The CopyOnWriteFs is a union filesystem: a read only base file system with
// a possibly writeable layer on top. Changes to the file system will only
// be made in the overlay: Changing an existing file in the base layer which
// is not present in the overlay will copy the file to the overlay ("changing"
// includes also calls to e.g. Chtimes() and Chmod()).
//
// Reading directories is currently only supported via Open(), not OpenFile().
type CopyOnWriteFs struct {
base Fs
layer Fs
}
func NewCopyOnWriteFs(base Fs, layer Fs) Fs {
return &CopyOnWriteFs{base: base, layer: layer}
}
// Returns true if the file is not in the overlay
func (u *CopyOnWriteFs) isBaseFile(name string) (bool, error) {
if _, err := u.layer.Stat(name); err == nil {
return false, nil
}
_, err := u.base.Stat(name)
if err != nil {
if oerr, ok := err.(*os.PathError); ok {
if oerr.Err == os.ErrNotExist || oerr.Err == syscall.ENOENT || oerr.Err == syscall.ENOTDIR {
return false, nil
}
}
if err == syscall.ENOENT {
return false, nil
}
}
return true, err
}
func (u *CopyOnWriteFs) copyToLayer(name string) error {
return copyToLayer(u.base, u.layer, name)
}
func (u *CopyOnWriteFs) Chtimes(name string, atime, mtime time.Time) error {
b, err := u.isBaseFile(name)
if err != nil {
return err
}
if b {
if err := u.copyToLayer(name); err != nil {
return err
}
}
return u.layer.Chtimes(name, atime, mtime)
}
func (u *CopyOnWriteFs) Chmod(name string, mode os.FileMode) error {
b, err := u.isBaseFile(name)
if err != nil {
return err
}
if b {
if err := u.copyToLayer(name); err != nil {
return err
}
}
return u.layer.Chmod(name, mode)
}
func (u *CopyOnWriteFs) Stat(name string) (os.FileInfo, error) {
fi, err := u.layer.Stat(name)
if err != nil {
isNotExist := u.isNotExist(err)
if isNotExist {
return u.base.Stat(name)
}
return nil, err
}
return fi, nil
}
func (u *CopyOnWriteFs) LstatIfPossible(name string) (os.FileInfo, bool, error) {
llayer, ok1 := u.layer.(Lstater)
lbase, ok2 := u.base.(Lstater)
if ok1 {
fi, b, err := llayer.LstatIfPossible(name)
if err == nil {
return fi, b, nil
}
if !u.isNotExist(err) {
return nil, b, err
}
}
if ok2 {
fi, b, err := lbase.LstatIfPossible(name)
if err == nil {
return fi, b, nil
}
if !u.isNotExist(err) {
return nil, b, err
}
}
fi, err := u.Stat(name)
return fi, false, err
}
func (u *CopyOnWriteFs) isNotExist(err error) bool {
if e, ok := err.(*os.PathError); ok {
err = e.Err
}
if err == os.ErrNotExist || err == syscall.ENOENT || err == syscall.ENOTDIR {
return true
}
return false
}
// Renaming files present only in the base layer is not permitted
func (u *CopyOnWriteFs) Rename(oldname, newname string) error {
b, err := u.isBaseFile(oldname)
if err != nil {
return err
}
if b {
return syscall.EPERM
}
return u.layer.Rename(oldname, newname)
}
// Removing files present only in the base layer is not permitted. If
// a file is present in the base layer and the overlay, only the overlay
// will be removed.
func (u *CopyOnWriteFs) Remove(name string) error {
err := u.layer.Remove(name)
switch err {
case syscall.ENOENT:
_, err = u.base.Stat(name)
if err == nil {
return syscall.EPERM
}
return syscall.ENOENT
default:
return err
}
}
func (u *CopyOnWriteFs) RemoveAll(name string) error {
err := u.layer.RemoveAll(name)
switch err {
case syscall.ENOENT:
_, err = u.base.Stat(name)
if err == nil {
return syscall.EPERM
}
return syscall.ENOENT
default:
return err
}
}
func (u *CopyOnWriteFs) OpenFile(name string, flag int, perm os.FileMode) (File, error) {
b, err := u.isBaseFile(name)
if err != nil {
return nil, err
}
if flag&(os.O_WRONLY|os.O_RDWR|os.O_APPEND|os.O_CREATE|os.O_TRUNC) != 0 {
if b {
if err = u.copyToLayer(name); err != nil {
return nil, err
}
return u.layer.OpenFile(name, flag, perm)
}
dir := filepath.Dir(name)
isaDir, err := IsDir(u.base, dir)
if err != nil && !os.IsNotExist(err) {
return nil, err
}
if isaDir {
if err = u.layer.MkdirAll(dir, 0777); err != nil {
return nil, err
}
return u.layer.OpenFile(name, flag, perm)
}
isaDir, err = IsDir(u.layer, dir)
if err != nil {
return nil, err
}
if isaDir {
return u.layer.OpenFile(name, flag, perm)
}
return nil, &os.PathError{Op: "open", Path: name, Err: syscall.ENOTDIR} // ...or os.ErrNotExist?
}
if b {
return u.base.OpenFile(name, flag, perm)
}
return u.layer.OpenFile(name, flag, perm)
}
// This function handles the 9 different possibilities caused
// by the union which are the intersection of the following...
// layer: doesn't exist, exists as a file, and exists as a directory
// base: doesn't exist, exists as a file, and exists as a directory
func (u *CopyOnWriteFs) Open(name string) (File, error) {
// Since the overlay overrides the base we check that first
b, err := u.isBaseFile(name)
if err != nil {
return nil, err
}
// If overlay doesn't exist, return the base (base state irrelevant)
if b {
return u.base.Open(name)
}
// If overlay is a file, return it (base state irrelevant)
dir, err := IsDir(u.layer, name)
if err != nil {
return nil, err
}
if !dir {
return u.layer.Open(name)
}
// Overlay is a directory, base state now matters.
// Base state has 3 states to check but 2 outcomes:
// A. It's a file or non-readable in the base (return just the overlay)
// B. It's an accessible directory in the base (return a UnionFile)
// If base is file or nonreadable, return overlay
dir, err = IsDir(u.base, name)
if !dir || err != nil {
return u.layer.Open(name)
}
// Both base & layer are directories
// Return union file (if opens are without error)
bfile, bErr := u.base.Open(name)
lfile, lErr := u.layer.Open(name)
// If either have errors at this point something is very wrong. Return nil and the errors
if bErr != nil || lErr != nil {
return nil, fmt.Errorf("BaseErr: %v\nOverlayErr: %v", bErr, lErr)
}
return &UnionFile{Base: bfile, Layer: lfile}, nil
}
func (u *CopyOnWriteFs) Mkdir(name string, perm os.FileMode) error {
dir, err := IsDir(u.base, name)
if err != nil {
return u.layer.MkdirAll(name, perm)
}
if dir {
return ErrFileExists
}
return u.layer.MkdirAll(name, perm)
}
func (u *CopyOnWriteFs) Name() string {
return "CopyOnWriteFs"
}
func (u *CopyOnWriteFs) MkdirAll(name string, perm os.FileMode) error {
dir, err := IsDir(u.base, name)
if err != nil {
return u.layer.MkdirAll(name, perm)
}
if dir {
// This is in line with how os.MkdirAll behaves.
return nil
}
return u.layer.MkdirAll(name, perm)
}
func (u *CopyOnWriteFs) Create(name string) (File, error) {
return u.OpenFile(name, os.O_CREATE|os.O_TRUNC|os.O_RDWR, 0666)
}

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// Copyright © 2014 Steve Francia <spf@spf13.com>.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package afero
import (
"errors"
"net/http"
"os"
"path"
"path/filepath"
"strings"
"time"
)
type httpDir struct {
basePath string
fs HttpFs
}
func (d httpDir) Open(name string) (http.File, error) {
if filepath.Separator != '/' && strings.IndexRune(name, filepath.Separator) >= 0 ||
strings.Contains(name, "\x00") {
return nil, errors.New("http: invalid character in file path")
}
dir := string(d.basePath)
if dir == "" {
dir = "."
}
f, err := d.fs.Open(filepath.Join(dir, filepath.FromSlash(path.Clean("/"+name))))
if err != nil {
return nil, err
}
return f, nil
}
type HttpFs struct {
source Fs
}
func NewHttpFs(source Fs) *HttpFs {
return &HttpFs{source: source}
}
func (h HttpFs) Dir(s string) *httpDir {
return &httpDir{basePath: s, fs: h}
}
func (h HttpFs) Name() string { return "h HttpFs" }
func (h HttpFs) Create(name string) (File, error) {
return h.source.Create(name)
}
func (h HttpFs) Chmod(name string, mode os.FileMode) error {
return h.source.Chmod(name, mode)
}
func (h HttpFs) Chtimes(name string, atime time.Time, mtime time.Time) error {
return h.source.Chtimes(name, atime, mtime)
}
func (h HttpFs) Mkdir(name string, perm os.FileMode) error {
return h.source.Mkdir(name, perm)
}
func (h HttpFs) MkdirAll(path string, perm os.FileMode) error {
return h.source.MkdirAll(path, perm)
}
func (h HttpFs) Open(name string) (http.File, error) {
f, err := h.source.Open(name)
if err == nil {
if httpfile, ok := f.(http.File); ok {
return httpfile, nil
}
}
return nil, err
}
func (h HttpFs) OpenFile(name string, flag int, perm os.FileMode) (File, error) {
return h.source.OpenFile(name, flag, perm)
}
func (h HttpFs) Remove(name string) error {
return h.source.Remove(name)
}
func (h HttpFs) RemoveAll(path string) error {
return h.source.RemoveAll(path)
}
func (h HttpFs) Rename(oldname, newname string) error {
return h.source.Rename(oldname, newname)
}
func (h HttpFs) Stat(name string) (os.FileInfo, error) {
return h.source.Stat(name)
}

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// Copyright ©2015 The Go Authors
// Copyright ©2015 Steve Francia <spf@spf13.com>
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package afero
import (
"bytes"
"io"
"os"
"path/filepath"
"sort"
"strconv"
"sync"
"time"
)
// byName implements sort.Interface.
type byName []os.FileInfo
func (f byName) Len() int { return len(f) }
func (f byName) Less(i, j int) bool { return f[i].Name() < f[j].Name() }
func (f byName) Swap(i, j int) { f[i], f[j] = f[j], f[i] }
// ReadDir reads the directory named by dirname and returns
// a list of sorted directory entries.
func (a Afero) ReadDir(dirname string) ([]os.FileInfo, error) {
return ReadDir(a.Fs, dirname)
}
func ReadDir(fs Fs, dirname string) ([]os.FileInfo, error) {
f, err := fs.Open(dirname)
if err != nil {
return nil, err
}
list, err := f.Readdir(-1)
f.Close()
if err != nil {
return nil, err
}
sort.Sort(byName(list))
return list, nil
}
// ReadFile reads the file named by filename and returns the contents.
// A successful call returns err == nil, not err == EOF. Because ReadFile
// reads the whole file, it does not treat an EOF from Read as an error
// to be reported.
func (a Afero) ReadFile(filename string) ([]byte, error) {
return ReadFile(a.Fs, filename)
}
func ReadFile(fs Fs, filename string) ([]byte, error) {
f, err := fs.Open(filename)
if err != nil {
return nil, err
}
defer f.Close()
// It's a good but not certain bet that FileInfo will tell us exactly how much to
// read, so let's try it but be prepared for the answer to be wrong.
var n int64
if fi, err := f.Stat(); err == nil {
// Don't preallocate a huge buffer, just in case.
if size := fi.Size(); size < 1e9 {
n = size
}
}
// As initial capacity for readAll, use n + a little extra in case Size is zero,
// and to avoid another allocation after Read has filled the buffer. The readAll
// call will read into its allocated internal buffer cheaply. If the size was
// wrong, we'll either waste some space off the end or reallocate as needed, but
// in the overwhelmingly common case we'll get it just right.
return readAll(f, n+bytes.MinRead)
}
// readAll reads from r until an error or EOF and returns the data it read
// from the internal buffer allocated with a specified capacity.
func readAll(r io.Reader, capacity int64) (b []byte, err error) {
buf := bytes.NewBuffer(make([]byte, 0, capacity))
// If the buffer overflows, we will get bytes.ErrTooLarge.
// Return that as an error. Any other panic remains.
defer func() {
e := recover()
if e == nil {
return
}
if panicErr, ok := e.(error); ok && panicErr == bytes.ErrTooLarge {
err = panicErr
} else {
panic(e)
}
}()
_, err = buf.ReadFrom(r)
return buf.Bytes(), err
}
// ReadAll reads from r until an error or EOF and returns the data it read.
// A successful call returns err == nil, not err == EOF. Because ReadAll is
// defined to read from src until EOF, it does not treat an EOF from Read
// as an error to be reported.
func ReadAll(r io.Reader) ([]byte, error) {
return readAll(r, bytes.MinRead)
}
// WriteFile writes data to a file named by filename.
// If the file does not exist, WriteFile creates it with permissions perm;
// otherwise WriteFile truncates it before writing.
func (a Afero) WriteFile(filename string, data []byte, perm os.FileMode) error {
return WriteFile(a.Fs, filename, data, perm)
}
func WriteFile(fs Fs, filename string, data []byte, perm os.FileMode) error {
f, err := fs.OpenFile(filename, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, perm)
if err != nil {
return err
}
n, err := f.Write(data)
if err == nil && n < len(data) {
err = io.ErrShortWrite
}
if err1 := f.Close(); err == nil {
err = err1
}
return err
}
// Random number state.
// We generate random temporary file names so that there's a good
// chance the file doesn't exist yet - keeps the number of tries in
// TempFile to a minimum.
var rand uint32
var randmu sync.Mutex
func reseed() uint32 {
return uint32(time.Now().UnixNano() + int64(os.Getpid()))
}
func nextSuffix() string {
randmu.Lock()
r := rand
if r == 0 {
r = reseed()
}
r = r*1664525 + 1013904223 // constants from Numerical Recipes
rand = r
randmu.Unlock()
return strconv.Itoa(int(1e9 + r%1e9))[1:]
}
// TempFile creates a new temporary file in the directory dir
// with a name beginning with prefix, opens the file for reading
// and writing, and returns the resulting *File.
// If dir is the empty string, TempFile uses the default directory
// for temporary files (see os.TempDir).
// Multiple programs calling TempFile simultaneously
// will not choose the same file. The caller can use f.Name()
// to find the pathname of the file. It is the caller's responsibility
// to remove the file when no longer needed.
func (a Afero) TempFile(dir, prefix string) (f File, err error) {
return TempFile(a.Fs, dir, prefix)
}
func TempFile(fs Fs, dir, prefix string) (f File, err error) {
if dir == "" {
dir = os.TempDir()
}
nconflict := 0
for i := 0; i < 10000; i++ {
name := filepath.Join(dir, prefix+nextSuffix())
f, err = fs.OpenFile(name, os.O_RDWR|os.O_CREATE|os.O_EXCL, 0600)
if os.IsExist(err) {
if nconflict++; nconflict > 10 {
randmu.Lock()
rand = reseed()
randmu.Unlock()
}
continue
}
break
}
return
}
// TempDir creates a new temporary directory in the directory dir
// with a name beginning with prefix and returns the path of the
// new directory. If dir is the empty string, TempDir uses the
// default directory for temporary files (see os.TempDir).
// Multiple programs calling TempDir simultaneously
// will not choose the same directory. It is the caller's responsibility
// to remove the directory when no longer needed.
func (a Afero) TempDir(dir, prefix string) (name string, err error) {
return TempDir(a.Fs, dir, prefix)
}
func TempDir(fs Fs, dir, prefix string) (name string, err error) {
if dir == "" {
dir = os.TempDir()
}
nconflict := 0
for i := 0; i < 10000; i++ {
try := filepath.Join(dir, prefix+nextSuffix())
err = fs.Mkdir(try, 0700)
if os.IsExist(err) {
if nconflict++; nconflict > 10 {
randmu.Lock()
rand = reseed()
randmu.Unlock()
}
continue
}
if err == nil {
name = try
}
break
}
return
}

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// Copyright © 2018 Steve Francia <spf@spf13.com>.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package afero
import (
"os"
)
// Lstater is an optional interface in Afero. It is only implemented by the
// filesystems saying so.
// It will call Lstat if the filesystem iself is, or it delegates to, the os filesystem.
// Else it will call Stat.
// In addtion to the FileInfo, it will return a boolean telling whether Lstat was called or not.
type Lstater interface {
LstatIfPossible(name string) (os.FileInfo, bool, error)
}

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// Copyright © 2014 Steve Francia <spf@spf13.com>.
// Copyright 2009 The Go Authors. All rights reserved.
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package afero
import (
"path/filepath"
"sort"
"strings"
)
// Glob returns the names of all files matching pattern or nil
// if there is no matching file. The syntax of patterns is the same
// as in Match. The pattern may describe hierarchical names such as
// /usr/*/bin/ed (assuming the Separator is '/').
//
// Glob ignores file system errors such as I/O errors reading directories.
// The only possible returned error is ErrBadPattern, when pattern
// is malformed.
//
// This was adapted from (http://golang.org/pkg/path/filepath) and uses several
// built-ins from that package.
func Glob(fs Fs, pattern string) (matches []string, err error) {
if !hasMeta(pattern) {
// Lstat not supported by a ll filesystems.
if _, err = lstatIfPossible(fs, pattern); err != nil {
return nil, nil
}
return []string{pattern}, nil
}
dir, file := filepath.Split(pattern)
switch dir {
case "":
dir = "."
case string(filepath.Separator):
// nothing
default:
dir = dir[0 : len(dir)-1] // chop off trailing separator
}
if !hasMeta(dir) {
return glob(fs, dir, file, nil)
}
var m []string
m, err = Glob(fs, dir)
if err != nil {
return
}
for _, d := range m {
matches, err = glob(fs, d, file, matches)
if err != nil {
return
}
}
return
}
// glob searches for files matching pattern in the directory dir
// and appends them to matches. If the directory cannot be
// opened, it returns the existing matches. New matches are
// added in lexicographical order.
func glob(fs Fs, dir, pattern string, matches []string) (m []string, e error) {
m = matches
fi, err := fs.Stat(dir)
if err != nil {
return
}
if !fi.IsDir() {
return
}
d, err := fs.Open(dir)
if err != nil {
return
}
defer d.Close()
names, _ := d.Readdirnames(-1)
sort.Strings(names)
for _, n := range names {
matched, err := filepath.Match(pattern, n)
if err != nil {
return m, err
}
if matched {
m = append(m, filepath.Join(dir, n))
}
}
return
}
// hasMeta reports whether path contains any of the magic characters
// recognized by Match.
func hasMeta(path string) bool {
// TODO(niemeyer): Should other magic characters be added here?
return strings.IndexAny(path, "*?[") >= 0
}

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// Copyright © 2014 Steve Francia <spf@spf13.com>.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package mem
type Dir interface {
Len() int
Names() []string
Files() []*FileData
Add(*FileData)
Remove(*FileData)
}
func RemoveFromMemDir(dir *FileData, f *FileData) {
dir.memDir.Remove(f)
}
func AddToMemDir(dir *FileData, f *FileData) {
dir.memDir.Add(f)
}
func InitializeDir(d *FileData) {
if d.memDir == nil {
d.dir = true
d.memDir = &DirMap{}
}
}

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// Copyright © 2015 Steve Francia <spf@spf13.com>.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package mem
import "sort"
type DirMap map[string]*FileData
func (m DirMap) Len() int { return len(m) }
func (m DirMap) Add(f *FileData) { m[f.name] = f }
func (m DirMap) Remove(f *FileData) { delete(m, f.name) }
func (m DirMap) Files() (files []*FileData) {
for _, f := range m {
files = append(files, f)
}
sort.Sort(filesSorter(files))
return files
}
// implement sort.Interface for []*FileData
type filesSorter []*FileData
func (s filesSorter) Len() int { return len(s) }
func (s filesSorter) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
func (s filesSorter) Less(i, j int) bool { return s[i].name < s[j].name }
func (m DirMap) Names() (names []string) {
for x := range m {
names = append(names, x)
}
return names
}

317
vendor/github.com/spf13/afero/mem/file.go generated vendored Normal file
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// Copyright © 2015 Steve Francia <spf@spf13.com>.
// Copyright 2013 tsuru authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package mem
import (
"bytes"
"errors"
"io"
"os"
"path/filepath"
"sync"
"sync/atomic"
)
import "time"
const FilePathSeparator = string(filepath.Separator)
type File struct {
// atomic requires 64-bit alignment for struct field access
at int64
readDirCount int64
closed bool
readOnly bool
fileData *FileData
}
func NewFileHandle(data *FileData) *File {
return &File{fileData: data}
}
func NewReadOnlyFileHandle(data *FileData) *File {
return &File{fileData: data, readOnly: true}
}
func (f File) Data() *FileData {
return f.fileData
}
type FileData struct {
sync.Mutex
name string
data []byte
memDir Dir
dir bool
mode os.FileMode
modtime time.Time
}
func (d *FileData) Name() string {
d.Lock()
defer d.Unlock()
return d.name
}
func CreateFile(name string) *FileData {
return &FileData{name: name, mode: os.ModeTemporary, modtime: time.Now()}
}
func CreateDir(name string) *FileData {
return &FileData{name: name, memDir: &DirMap{}, dir: true}
}
func ChangeFileName(f *FileData, newname string) {
f.Lock()
f.name = newname
f.Unlock()
}
func SetMode(f *FileData, mode os.FileMode) {
f.Lock()
f.mode = mode
f.Unlock()
}
func SetModTime(f *FileData, mtime time.Time) {
f.Lock()
setModTime(f, mtime)
f.Unlock()
}
func setModTime(f *FileData, mtime time.Time) {
f.modtime = mtime
}
func GetFileInfo(f *FileData) *FileInfo {
return &FileInfo{f}
}
func (f *File) Open() error {
atomic.StoreInt64(&f.at, 0)
atomic.StoreInt64(&f.readDirCount, 0)
f.fileData.Lock()
f.closed = false
f.fileData.Unlock()
return nil
}
func (f *File) Close() error {
f.fileData.Lock()
f.closed = true
if !f.readOnly {
setModTime(f.fileData, time.Now())
}
f.fileData.Unlock()
return nil
}
func (f *File) Name() string {
return f.fileData.Name()
}
func (f *File) Stat() (os.FileInfo, error) {
return &FileInfo{f.fileData}, nil
}
func (f *File) Sync() error {
return nil
}
func (f *File) Readdir(count int) (res []os.FileInfo, err error) {
if !f.fileData.dir {
return nil, &os.PathError{Op: "readdir", Path: f.fileData.name, Err: errors.New("not a dir")}
}
var outLength int64
f.fileData.Lock()
files := f.fileData.memDir.Files()[f.readDirCount:]
if count > 0 {
if len(files) < count {
outLength = int64(len(files))
} else {
outLength = int64(count)
}
if len(files) == 0 {
err = io.EOF
}
} else {
outLength = int64(len(files))
}
f.readDirCount += outLength
f.fileData.Unlock()
res = make([]os.FileInfo, outLength)
for i := range res {
res[i] = &FileInfo{files[i]}
}
return res, err
}
func (f *File) Readdirnames(n int) (names []string, err error) {
fi, err := f.Readdir(n)
names = make([]string, len(fi))
for i, f := range fi {
_, names[i] = filepath.Split(f.Name())
}
return names, err
}
func (f *File) Read(b []byte) (n int, err error) {
f.fileData.Lock()
defer f.fileData.Unlock()
if f.closed == true {
return 0, ErrFileClosed
}
if len(b) > 0 && int(f.at) == len(f.fileData.data) {
return 0, io.EOF
}
if int(f.at) > len(f.fileData.data) {
return 0, io.ErrUnexpectedEOF
}
if len(f.fileData.data)-int(f.at) >= len(b) {
n = len(b)
} else {
n = len(f.fileData.data) - int(f.at)
}
copy(b, f.fileData.data[f.at:f.at+int64(n)])
atomic.AddInt64(&f.at, int64(n))
return
}
func (f *File) ReadAt(b []byte, off int64) (n int, err error) {
atomic.StoreInt64(&f.at, off)
return f.Read(b)
}
func (f *File) Truncate(size int64) error {
if f.closed == true {
return ErrFileClosed
}
if f.readOnly {
return &os.PathError{Op: "truncate", Path: f.fileData.name, Err: errors.New("file handle is read only")}
}
if size < 0 {
return ErrOutOfRange
}
if size > int64(len(f.fileData.data)) {
diff := size - int64(len(f.fileData.data))
f.fileData.data = append(f.fileData.data, bytes.Repeat([]byte{00}, int(diff))...)
} else {
f.fileData.data = f.fileData.data[0:size]
}
setModTime(f.fileData, time.Now())
return nil
}
func (f *File) Seek(offset int64, whence int) (int64, error) {
if f.closed == true {
return 0, ErrFileClosed
}
switch whence {
case 0:
atomic.StoreInt64(&f.at, offset)
case 1:
atomic.AddInt64(&f.at, int64(offset))
case 2:
atomic.StoreInt64(&f.at, int64(len(f.fileData.data))+offset)
}
return f.at, nil
}
func (f *File) Write(b []byte) (n int, err error) {
if f.readOnly {
return 0, &os.PathError{Op: "write", Path: f.fileData.name, Err: errors.New("file handle is read only")}
}
n = len(b)
cur := atomic.LoadInt64(&f.at)
f.fileData.Lock()
defer f.fileData.Unlock()
diff := cur - int64(len(f.fileData.data))
var tail []byte
if n+int(cur) < len(f.fileData.data) {
tail = f.fileData.data[n+int(cur):]
}
if diff > 0 {
f.fileData.data = append(bytes.Repeat([]byte{00}, int(diff)), b...)
f.fileData.data = append(f.fileData.data, tail...)
} else {
f.fileData.data = append(f.fileData.data[:cur], b...)
f.fileData.data = append(f.fileData.data, tail...)
}
setModTime(f.fileData, time.Now())
atomic.StoreInt64(&f.at, int64(len(f.fileData.data)))
return
}
func (f *File) WriteAt(b []byte, off int64) (n int, err error) {
atomic.StoreInt64(&f.at, off)
return f.Write(b)
}
func (f *File) WriteString(s string) (ret int, err error) {
return f.Write([]byte(s))
}
func (f *File) Info() *FileInfo {
return &FileInfo{f.fileData}
}
type FileInfo struct {
*FileData
}
// Implements os.FileInfo
func (s *FileInfo) Name() string {
s.Lock()
_, name := filepath.Split(s.name)
s.Unlock()
return name
}
func (s *FileInfo) Mode() os.FileMode {
s.Lock()
defer s.Unlock()
return s.mode
}
func (s *FileInfo) ModTime() time.Time {
s.Lock()
defer s.Unlock()
return s.modtime
}
func (s *FileInfo) IsDir() bool {
s.Lock()
defer s.Unlock()
return s.dir
}
func (s *FileInfo) Sys() interface{} { return nil }
func (s *FileInfo) Size() int64 {
if s.IsDir() {
return int64(42)
}
s.Lock()
defer s.Unlock()
return int64(len(s.data))
}
var (
ErrFileClosed = errors.New("File is closed")
ErrOutOfRange = errors.New("Out of range")
ErrTooLarge = errors.New("Too large")
ErrFileNotFound = os.ErrNotExist
ErrFileExists = os.ErrExist
ErrDestinationExists = os.ErrExist
)

365
vendor/github.com/spf13/afero/memmap.go generated vendored Normal file
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// Copyright © 2014 Steve Francia <spf@spf13.com>.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package afero
import (
"fmt"
"log"
"os"
"path/filepath"
"strings"
"sync"
"time"
"github.com/spf13/afero/mem"
)
type MemMapFs struct {
mu sync.RWMutex
data map[string]*mem.FileData
init sync.Once
}
func NewMemMapFs() Fs {
return &MemMapFs{}
}
func (m *MemMapFs) getData() map[string]*mem.FileData {
m.init.Do(func() {
m.data = make(map[string]*mem.FileData)
// Root should always exist, right?
// TODO: what about windows?
m.data[FilePathSeparator] = mem.CreateDir(FilePathSeparator)
})
return m.data
}
func (*MemMapFs) Name() string { return "MemMapFS" }
func (m *MemMapFs) Create(name string) (File, error) {
name = normalizePath(name)
m.mu.Lock()
file := mem.CreateFile(name)
m.getData()[name] = file
m.registerWithParent(file)
m.mu.Unlock()
return mem.NewFileHandle(file), nil
}
func (m *MemMapFs) unRegisterWithParent(fileName string) error {
f, err := m.lockfreeOpen(fileName)
if err != nil {
return err
}
parent := m.findParent(f)
if parent == nil {
log.Panic("parent of ", f.Name(), " is nil")
}
parent.Lock()
mem.RemoveFromMemDir(parent, f)
parent.Unlock()
return nil
}
func (m *MemMapFs) findParent(f *mem.FileData) *mem.FileData {
pdir, _ := filepath.Split(f.Name())
pdir = filepath.Clean(pdir)
pfile, err := m.lockfreeOpen(pdir)
if err != nil {
return nil
}
return pfile
}
func (m *MemMapFs) registerWithParent(f *mem.FileData) {
if f == nil {
return
}
parent := m.findParent(f)
if parent == nil {
pdir := filepath.Dir(filepath.Clean(f.Name()))
err := m.lockfreeMkdir(pdir, 0777)
if err != nil {
//log.Println("Mkdir error:", err)
return
}
parent, err = m.lockfreeOpen(pdir)
if err != nil {
//log.Println("Open after Mkdir error:", err)
return
}
}
parent.Lock()
mem.InitializeDir(parent)
mem.AddToMemDir(parent, f)
parent.Unlock()
}
func (m *MemMapFs) lockfreeMkdir(name string, perm os.FileMode) error {
name = normalizePath(name)
x, ok := m.getData()[name]
if ok {
// Only return ErrFileExists if it's a file, not a directory.
i := mem.FileInfo{FileData: x}
if !i.IsDir() {
return ErrFileExists
}
} else {
item := mem.CreateDir(name)
m.getData()[name] = item
m.registerWithParent(item)
}
return nil
}
func (m *MemMapFs) Mkdir(name string, perm os.FileMode) error {
name = normalizePath(name)
m.mu.RLock()
_, ok := m.getData()[name]
m.mu.RUnlock()
if ok {
return &os.PathError{Op: "mkdir", Path: name, Err: ErrFileExists}
}
m.mu.Lock()
item := mem.CreateDir(name)
m.getData()[name] = item
m.registerWithParent(item)
m.mu.Unlock()
m.Chmod(name, perm|os.ModeDir)
return nil
}
func (m *MemMapFs) MkdirAll(path string, perm os.FileMode) error {
err := m.Mkdir(path, perm)
if err != nil {
if err.(*os.PathError).Err == ErrFileExists {
return nil
}
return err
}
return nil
}
// Handle some relative paths
func normalizePath(path string) string {
path = filepath.Clean(path)
switch path {
case ".":
return FilePathSeparator
case "..":
return FilePathSeparator
default:
return path
}
}
func (m *MemMapFs) Open(name string) (File, error) {
f, err := m.open(name)
if f != nil {
return mem.NewReadOnlyFileHandle(f), err
}
return nil, err
}
func (m *MemMapFs) openWrite(name string) (File, error) {
f, err := m.open(name)
if f != nil {
return mem.NewFileHandle(f), err
}
return nil, err
}
func (m *MemMapFs) open(name string) (*mem.FileData, error) {
name = normalizePath(name)
m.mu.RLock()
f, ok := m.getData()[name]
m.mu.RUnlock()
if !ok {
return nil, &os.PathError{Op: "open", Path: name, Err: ErrFileNotFound}
}
return f, nil
}
func (m *MemMapFs) lockfreeOpen(name string) (*mem.FileData, error) {
name = normalizePath(name)
f, ok := m.getData()[name]
if ok {
return f, nil
} else {
return nil, ErrFileNotFound
}
}
func (m *MemMapFs) OpenFile(name string, flag int, perm os.FileMode) (File, error) {
chmod := false
file, err := m.openWrite(name)
if os.IsNotExist(err) && (flag&os.O_CREATE > 0) {
file, err = m.Create(name)
chmod = true
}
if err != nil {
return nil, err
}
if flag == os.O_RDONLY {
file = mem.NewReadOnlyFileHandle(file.(*mem.File).Data())
}
if flag&os.O_APPEND > 0 {
_, err = file.Seek(0, os.SEEK_END)
if err != nil {
file.Close()
return nil, err
}
}
if flag&os.O_TRUNC > 0 && flag&(os.O_RDWR|os.O_WRONLY) > 0 {
err = file.Truncate(0)
if err != nil {
file.Close()
return nil, err
}
}
if chmod {
m.Chmod(name, perm)
}
return file, nil
}
func (m *MemMapFs) Remove(name string) error {
name = normalizePath(name)
m.mu.Lock()
defer m.mu.Unlock()
if _, ok := m.getData()[name]; ok {
err := m.unRegisterWithParent(name)
if err != nil {
return &os.PathError{Op: "remove", Path: name, Err: err}
}
delete(m.getData(), name)
} else {
return &os.PathError{Op: "remove", Path: name, Err: os.ErrNotExist}
}
return nil
}
func (m *MemMapFs) RemoveAll(path string) error {
path = normalizePath(path)
m.mu.Lock()
m.unRegisterWithParent(path)
m.mu.Unlock()
m.mu.RLock()
defer m.mu.RUnlock()
for p, _ := range m.getData() {
if strings.HasPrefix(p, path) {
m.mu.RUnlock()
m.mu.Lock()
delete(m.getData(), p)
m.mu.Unlock()
m.mu.RLock()
}
}
return nil
}
func (m *MemMapFs) Rename(oldname, newname string) error {
oldname = normalizePath(oldname)
newname = normalizePath(newname)
if oldname == newname {
return nil
}
m.mu.RLock()
defer m.mu.RUnlock()
if _, ok := m.getData()[oldname]; ok {
m.mu.RUnlock()
m.mu.Lock()
m.unRegisterWithParent(oldname)
fileData := m.getData()[oldname]
delete(m.getData(), oldname)
mem.ChangeFileName(fileData, newname)
m.getData()[newname] = fileData
m.registerWithParent(fileData)
m.mu.Unlock()
m.mu.RLock()
} else {
return &os.PathError{Op: "rename", Path: oldname, Err: ErrFileNotFound}
}
return nil
}
func (m *MemMapFs) Stat(name string) (os.FileInfo, error) {
f, err := m.Open(name)
if err != nil {
return nil, err
}
fi := mem.GetFileInfo(f.(*mem.File).Data())
return fi, nil
}
func (m *MemMapFs) Chmod(name string, mode os.FileMode) error {
name = normalizePath(name)
m.mu.RLock()
f, ok := m.getData()[name]
m.mu.RUnlock()
if !ok {
return &os.PathError{Op: "chmod", Path: name, Err: ErrFileNotFound}
}
m.mu.Lock()
mem.SetMode(f, mode)
m.mu.Unlock()
return nil
}
func (m *MemMapFs) Chtimes(name string, atime time.Time, mtime time.Time) error {
name = normalizePath(name)
m.mu.RLock()
f, ok := m.getData()[name]
m.mu.RUnlock()
if !ok {
return &os.PathError{Op: "chtimes", Path: name, Err: ErrFileNotFound}
}
m.mu.Lock()
mem.SetModTime(f, mtime)
m.mu.Unlock()
return nil
}
func (m *MemMapFs) List() {
for _, x := range m.data {
y := mem.FileInfo{FileData: x}
fmt.Println(x.Name(), y.Size())
}
}
// func debugMemMapList(fs Fs) {
// if x, ok := fs.(*MemMapFs); ok {
// x.List()
// }
// }

101
vendor/github.com/spf13/afero/os.go generated vendored Normal file
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// Copyright © 2014 Steve Francia <spf@spf13.com>.
// Copyright 2013 tsuru authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package afero
import (
"os"
"time"
)
var _ Lstater = (*OsFs)(nil)
// OsFs is a Fs implementation that uses functions provided by the os package.
//
// For details in any method, check the documentation of the os package
// (http://golang.org/pkg/os/).
type OsFs struct{}
func NewOsFs() Fs {
return &OsFs{}
}
func (OsFs) Name() string { return "OsFs" }
func (OsFs) Create(name string) (File, error) {
f, e := os.Create(name)
if f == nil {
// while this looks strange, we need to return a bare nil (of type nil) not
// a nil value of type *os.File or nil won't be nil
return nil, e
}
return f, e
}
func (OsFs) Mkdir(name string, perm os.FileMode) error {
return os.Mkdir(name, perm)
}
func (OsFs) MkdirAll(path string, perm os.FileMode) error {
return os.MkdirAll(path, perm)
}
func (OsFs) Open(name string) (File, error) {
f, e := os.Open(name)
if f == nil {
// while this looks strange, we need to return a bare nil (of type nil) not
// a nil value of type *os.File or nil won't be nil
return nil, e
}
return f, e
}
func (OsFs) OpenFile(name string, flag int, perm os.FileMode) (File, error) {
f, e := os.OpenFile(name, flag, perm)
if f == nil {
// while this looks strange, we need to return a bare nil (of type nil) not
// a nil value of type *os.File or nil won't be nil
return nil, e
}
return f, e
}
func (OsFs) Remove(name string) error {
return os.Remove(name)
}
func (OsFs) RemoveAll(path string) error {
return os.RemoveAll(path)
}
func (OsFs) Rename(oldname, newname string) error {
return os.Rename(oldname, newname)
}
func (OsFs) Stat(name string) (os.FileInfo, error) {
return os.Stat(name)
}
func (OsFs) Chmod(name string, mode os.FileMode) error {
return os.Chmod(name, mode)
}
func (OsFs) Chtimes(name string, atime time.Time, mtime time.Time) error {
return os.Chtimes(name, atime, mtime)
}
func (OsFs) LstatIfPossible(name string) (os.FileInfo, bool, error) {
fi, err := os.Lstat(name)
return fi, true, err
}

106
vendor/github.com/spf13/afero/path.go generated vendored Normal file
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// Copyright ©2015 The Go Authors
// Copyright ©2015 Steve Francia <spf@spf13.com>
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package afero
import (
"os"
"path/filepath"
"sort"
)
// readDirNames reads the directory named by dirname and returns
// a sorted list of directory entries.
// adapted from https://golang.org/src/path/filepath/path.go
func readDirNames(fs Fs, dirname string) ([]string, error) {
f, err := fs.Open(dirname)
if err != nil {
return nil, err
}
names, err := f.Readdirnames(-1)
f.Close()
if err != nil {
return nil, err
}
sort.Strings(names)
return names, nil
}
// walk recursively descends path, calling walkFn
// adapted from https://golang.org/src/path/filepath/path.go
func walk(fs Fs, path string, info os.FileInfo, walkFn filepath.WalkFunc) error {
err := walkFn(path, info, nil)
if err != nil {
if info.IsDir() && err == filepath.SkipDir {
return nil
}
return err
}
if !info.IsDir() {
return nil
}
names, err := readDirNames(fs, path)
if err != nil {
return walkFn(path, info, err)
}
for _, name := range names {
filename := filepath.Join(path, name)
fileInfo, err := lstatIfPossible(fs, filename)
if err != nil {
if err := walkFn(filename, fileInfo, err); err != nil && err != filepath.SkipDir {
return err
}
} else {
err = walk(fs, filename, fileInfo, walkFn)
if err != nil {
if !fileInfo.IsDir() || err != filepath.SkipDir {
return err
}
}
}
}
return nil
}
// if the filesystem supports it, use Lstat, else use fs.Stat
func lstatIfPossible(fs Fs, path string) (os.FileInfo, error) {
if lfs, ok := fs.(Lstater); ok {
fi, _, err := lfs.LstatIfPossible(path)
return fi, err
}
return fs.Stat(path)
}
// Walk walks the file tree rooted at root, calling walkFn for each file or
// directory in the tree, including root. All errors that arise visiting files
// and directories are filtered by walkFn. The files are walked in lexical
// order, which makes the output deterministic but means that for very
// large directories Walk can be inefficient.
// Walk does not follow symbolic links.
func (a Afero) Walk(root string, walkFn filepath.WalkFunc) error {
return Walk(a.Fs, root, walkFn)
}
func Walk(fs Fs, root string, walkFn filepath.WalkFunc) error {
info, err := lstatIfPossible(fs, root)
if err != nil {
return walkFn(root, nil, err)
}
return walk(fs, root, info, walkFn)
}

80
vendor/github.com/spf13/afero/readonlyfs.go generated vendored Normal file
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package afero
import (
"os"
"syscall"
"time"
)
var _ Lstater = (*ReadOnlyFs)(nil)
type ReadOnlyFs struct {
source Fs
}
func NewReadOnlyFs(source Fs) Fs {
return &ReadOnlyFs{source: source}
}
func (r *ReadOnlyFs) ReadDir(name string) ([]os.FileInfo, error) {
return ReadDir(r.source, name)
}
func (r *ReadOnlyFs) Chtimes(n string, a, m time.Time) error {
return syscall.EPERM
}
func (r *ReadOnlyFs) Chmod(n string, m os.FileMode) error {
return syscall.EPERM
}
func (r *ReadOnlyFs) Name() string {
return "ReadOnlyFilter"
}
func (r *ReadOnlyFs) Stat(name string) (os.FileInfo, error) {
return r.source.Stat(name)
}
func (r *ReadOnlyFs) LstatIfPossible(name string) (os.FileInfo, bool, error) {
if lsf, ok := r.source.(Lstater); ok {
return lsf.LstatIfPossible(name)
}
fi, err := r.Stat(name)
return fi, false, err
}
func (r *ReadOnlyFs) Rename(o, n string) error {
return syscall.EPERM
}
func (r *ReadOnlyFs) RemoveAll(p string) error {
return syscall.EPERM
}
func (r *ReadOnlyFs) Remove(n string) error {
return syscall.EPERM
}
func (r *ReadOnlyFs) OpenFile(name string, flag int, perm os.FileMode) (File, error) {
if flag&(os.O_WRONLY|syscall.O_RDWR|os.O_APPEND|os.O_CREATE|os.O_TRUNC) != 0 {
return nil, syscall.EPERM
}
return r.source.OpenFile(name, flag, perm)
}
func (r *ReadOnlyFs) Open(n string) (File, error) {
return r.source.Open(n)
}
func (r *ReadOnlyFs) Mkdir(n string, p os.FileMode) error {
return syscall.EPERM
}
func (r *ReadOnlyFs) MkdirAll(n string, p os.FileMode) error {
return syscall.EPERM
}
func (r *ReadOnlyFs) Create(n string) (File, error) {
return nil, syscall.EPERM
}

214
vendor/github.com/spf13/afero/regexpfs.go generated vendored Normal file
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package afero
import (
"os"
"regexp"
"syscall"
"time"
)
// The RegexpFs filters files (not directories) by regular expression. Only
// files matching the given regexp will be allowed, all others get a ENOENT error (
// "No such file or directory").
//
type RegexpFs struct {
re *regexp.Regexp
source Fs
}
func NewRegexpFs(source Fs, re *regexp.Regexp) Fs {
return &RegexpFs{source: source, re: re}
}
type RegexpFile struct {
f File
re *regexp.Regexp
}
func (r *RegexpFs) matchesName(name string) error {
if r.re == nil {
return nil
}
if r.re.MatchString(name) {
return nil
}
return syscall.ENOENT
}
func (r *RegexpFs) dirOrMatches(name string) error {
dir, err := IsDir(r.source, name)
if err != nil {
return err
}
if dir {
return nil
}
return r.matchesName(name)
}
func (r *RegexpFs) Chtimes(name string, a, m time.Time) error {
if err := r.dirOrMatches(name); err != nil {
return err
}
return r.source.Chtimes(name, a, m)
}
func (r *RegexpFs) Chmod(name string, mode os.FileMode) error {
if err := r.dirOrMatches(name); err != nil {
return err
}
return r.source.Chmod(name, mode)
}
func (r *RegexpFs) Name() string {
return "RegexpFs"
}
func (r *RegexpFs) Stat(name string) (os.FileInfo, error) {
if err := r.dirOrMatches(name); err != nil {
return nil, err
}
return r.source.Stat(name)
}
func (r *RegexpFs) Rename(oldname, newname string) error {
dir, err := IsDir(r.source, oldname)
if err != nil {
return err
}
if dir {
return nil
}
if err := r.matchesName(oldname); err != nil {
return err
}
if err := r.matchesName(newname); err != nil {
return err
}
return r.source.Rename(oldname, newname)
}
func (r *RegexpFs) RemoveAll(p string) error {
dir, err := IsDir(r.source, p)
if err != nil {
return err
}
if !dir {
if err := r.matchesName(p); err != nil {
return err
}
}
return r.source.RemoveAll(p)
}
func (r *RegexpFs) Remove(name string) error {
if err := r.dirOrMatches(name); err != nil {
return err
}
return r.source.Remove(name)
}
func (r *RegexpFs) OpenFile(name string, flag int, perm os.FileMode) (File, error) {
if err := r.dirOrMatches(name); err != nil {
return nil, err
}
return r.source.OpenFile(name, flag, perm)
}
func (r *RegexpFs) Open(name string) (File, error) {
dir, err := IsDir(r.source, name)
if err != nil {
return nil, err
}
if !dir {
if err := r.matchesName(name); err != nil {
return nil, err
}
}
f, err := r.source.Open(name)
return &RegexpFile{f: f, re: r.re}, nil
}
func (r *RegexpFs) Mkdir(n string, p os.FileMode) error {
return r.source.Mkdir(n, p)
}
func (r *RegexpFs) MkdirAll(n string, p os.FileMode) error {
return r.source.MkdirAll(n, p)
}
func (r *RegexpFs) Create(name string) (File, error) {
if err := r.matchesName(name); err != nil {
return nil, err
}
return r.source.Create(name)
}
func (f *RegexpFile) Close() error {
return f.f.Close()
}
func (f *RegexpFile) Read(s []byte) (int, error) {
return f.f.Read(s)
}
func (f *RegexpFile) ReadAt(s []byte, o int64) (int, error) {
return f.f.ReadAt(s, o)
}
func (f *RegexpFile) Seek(o int64, w int) (int64, error) {
return f.f.Seek(o, w)
}
func (f *RegexpFile) Write(s []byte) (int, error) {
return f.f.Write(s)
}
func (f *RegexpFile) WriteAt(s []byte, o int64) (int, error) {
return f.f.WriteAt(s, o)
}
func (f *RegexpFile) Name() string {
return f.f.Name()
}
func (f *RegexpFile) Readdir(c int) (fi []os.FileInfo, err error) {
var rfi []os.FileInfo
rfi, err = f.f.Readdir(c)
if err != nil {
return nil, err
}
for _, i := range rfi {
if i.IsDir() || f.re.MatchString(i.Name()) {
fi = append(fi, i)
}
}
return fi, nil
}
func (f *RegexpFile) Readdirnames(c int) (n []string, err error) {
fi, err := f.Readdir(c)
if err != nil {
return nil, err
}
for _, s := range fi {
n = append(n, s.Name())
}
return n, nil
}
func (f *RegexpFile) Stat() (os.FileInfo, error) {
return f.f.Stat()
}
func (f *RegexpFile) Sync() error {
return f.f.Sync()
}
func (f *RegexpFile) Truncate(s int64) error {
return f.f.Truncate(s)
}
func (f *RegexpFile) WriteString(s string) (int, error) {
return f.f.WriteString(s)
}

320
vendor/github.com/spf13/afero/unionFile.go generated vendored Normal file
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package afero
import (
"io"
"os"
"path/filepath"
"syscall"
)
// The UnionFile implements the afero.File interface and will be returned
// when reading a directory present at least in the overlay or opening a file
// for writing.
//
// The calls to
// Readdir() and Readdirnames() merge the file os.FileInfo / names from the
// base and the overlay - for files present in both layers, only those
// from the overlay will be used.
//
// When opening files for writing (Create() / OpenFile() with the right flags)
// the operations will be done in both layers, starting with the overlay. A
// successful read in the overlay will move the cursor position in the base layer
// by the number of bytes read.
type UnionFile struct {
Base File
Layer File
Merger DirsMerger
off int
files []os.FileInfo
}
func (f *UnionFile) Close() error {
// first close base, so we have a newer timestamp in the overlay. If we'd close
// the overlay first, we'd get a cacheStale the next time we access this file
// -> cache would be useless ;-)
if f.Base != nil {
f.Base.Close()
}
if f.Layer != nil {
return f.Layer.Close()
}
return BADFD
}
func (f *UnionFile) Read(s []byte) (int, error) {
if f.Layer != nil {
n, err := f.Layer.Read(s)
if (err == nil || err == io.EOF) && f.Base != nil {
// advance the file position also in the base file, the next
// call may be a write at this position (or a seek with SEEK_CUR)
if _, seekErr := f.Base.Seek(int64(n), os.SEEK_CUR); seekErr != nil {
// only overwrite err in case the seek fails: we need to
// report an eventual io.EOF to the caller
err = seekErr
}
}
return n, err
}
if f.Base != nil {
return f.Base.Read(s)
}
return 0, BADFD
}
func (f *UnionFile) ReadAt(s []byte, o int64) (int, error) {
if f.Layer != nil {
n, err := f.Layer.ReadAt(s, o)
if (err == nil || err == io.EOF) && f.Base != nil {
_, err = f.Base.Seek(o+int64(n), os.SEEK_SET)
}
return n, err
}
if f.Base != nil {
return f.Base.ReadAt(s, o)
}
return 0, BADFD
}
func (f *UnionFile) Seek(o int64, w int) (pos int64, err error) {
if f.Layer != nil {
pos, err = f.Layer.Seek(o, w)
if (err == nil || err == io.EOF) && f.Base != nil {
_, err = f.Base.Seek(o, w)
}
return pos, err
}
if f.Base != nil {
return f.Base.Seek(o, w)
}
return 0, BADFD
}
func (f *UnionFile) Write(s []byte) (n int, err error) {
if f.Layer != nil {
n, err = f.Layer.Write(s)
if err == nil && f.Base != nil { // hmm, do we have fixed size files where a write may hit the EOF mark?
_, err = f.Base.Write(s)
}
return n, err
}
if f.Base != nil {
return f.Base.Write(s)
}
return 0, BADFD
}
func (f *UnionFile) WriteAt(s []byte, o int64) (n int, err error) {
if f.Layer != nil {
n, err = f.Layer.WriteAt(s, o)
if err == nil && f.Base != nil {
_, err = f.Base.WriteAt(s, o)
}
return n, err
}
if f.Base != nil {
return f.Base.WriteAt(s, o)
}
return 0, BADFD
}
func (f *UnionFile) Name() string {
if f.Layer != nil {
return f.Layer.Name()
}
return f.Base.Name()
}
// DirsMerger is how UnionFile weaves two directories together.
// It takes the FileInfo slices from the layer and the base and returns a
// single view.
type DirsMerger func(lofi, bofi []os.FileInfo) ([]os.FileInfo, error)
var defaultUnionMergeDirsFn = func(lofi, bofi []os.FileInfo) ([]os.FileInfo, error) {
var files = make(map[string]os.FileInfo)
for _, fi := range lofi {
files[fi.Name()] = fi
}
for _, fi := range bofi {
if _, exists := files[fi.Name()]; !exists {
files[fi.Name()] = fi
}
}
rfi := make([]os.FileInfo, len(files))
i := 0
for _, fi := range files {
rfi[i] = fi
i++
}
return rfi, nil
}
// Readdir will weave the two directories together and
// return a single view of the overlayed directories.
// At the end of the directory view, the error is io.EOF if c > 0.
func (f *UnionFile) Readdir(c int) (ofi []os.FileInfo, err error) {
var merge DirsMerger = f.Merger
if merge == nil {
merge = defaultUnionMergeDirsFn
}
if f.off == 0 {
var lfi []os.FileInfo
if f.Layer != nil {
lfi, err = f.Layer.Readdir(-1)
if err != nil {
return nil, err
}
}
var bfi []os.FileInfo
if f.Base != nil {
bfi, err = f.Base.Readdir(-1)
if err != nil {
return nil, err
}
}
merged, err := merge(lfi, bfi)
if err != nil {
return nil, err
}
f.files = append(f.files, merged...)
}
if c <= 0 && len(f.files) == 0 {
return f.files, nil
}
if f.off >= len(f.files) {
return nil, io.EOF
}
if c <= 0 {
return f.files[f.off:], nil
}
if c > len(f.files) {
c = len(f.files)
}
defer func() { f.off += c }()
return f.files[f.off:c], nil
}
func (f *UnionFile) Readdirnames(c int) ([]string, error) {
rfi, err := f.Readdir(c)
if err != nil {
return nil, err
}
var names []string
for _, fi := range rfi {
names = append(names, fi.Name())
}
return names, nil
}
func (f *UnionFile) Stat() (os.FileInfo, error) {
if f.Layer != nil {
return f.Layer.Stat()
}
if f.Base != nil {
return f.Base.Stat()
}
return nil, BADFD
}
func (f *UnionFile) Sync() (err error) {
if f.Layer != nil {
err = f.Layer.Sync()
if err == nil && f.Base != nil {
err = f.Base.Sync()
}
return err
}
if f.Base != nil {
return f.Base.Sync()
}
return BADFD
}
func (f *UnionFile) Truncate(s int64) (err error) {
if f.Layer != nil {
err = f.Layer.Truncate(s)
if err == nil && f.Base != nil {
err = f.Base.Truncate(s)
}
return err
}
if f.Base != nil {
return f.Base.Truncate(s)
}
return BADFD
}
func (f *UnionFile) WriteString(s string) (n int, err error) {
if f.Layer != nil {
n, err = f.Layer.WriteString(s)
if err == nil && f.Base != nil {
_, err = f.Base.WriteString(s)
}
return n, err
}
if f.Base != nil {
return f.Base.WriteString(s)
}
return 0, BADFD
}
func copyToLayer(base Fs, layer Fs, name string) error {
bfh, err := base.Open(name)
if err != nil {
return err
}
defer bfh.Close()
// First make sure the directory exists
exists, err := Exists(layer, filepath.Dir(name))
if err != nil {
return err
}
if !exists {
err = layer.MkdirAll(filepath.Dir(name), 0777) // FIXME?
if err != nil {
return err
}
}
// Create the file on the overlay
lfh, err := layer.Create(name)
if err != nil {
return err
}
n, err := io.Copy(lfh, bfh)
if err != nil {
// If anything fails, clean up the file
layer.Remove(name)
lfh.Close()
return err
}
bfi, err := bfh.Stat()
if err != nil || bfi.Size() != n {
layer.Remove(name)
lfh.Close()
return syscall.EIO
}
err = lfh.Close()
if err != nil {
layer.Remove(name)
lfh.Close()
return err
}
return layer.Chtimes(name, bfi.ModTime(), bfi.ModTime())
}

330
vendor/github.com/spf13/afero/util.go generated vendored Normal file
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// Copyright ©2015 Steve Francia <spf@spf13.com>
// Portions Copyright ©2015 The Hugo Authors
// Portions Copyright 2016-present Bjørn Erik Pedersen <bjorn.erik.pedersen@gmail.com>
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package afero
import (
"bytes"
"fmt"
"io"
"os"
"path/filepath"
"strings"
"unicode"
"golang.org/x/text/transform"
"golang.org/x/text/unicode/norm"
)
// Filepath separator defined by os.Separator.
const FilePathSeparator = string(filepath.Separator)
// Takes a reader and a path and writes the content
func (a Afero) WriteReader(path string, r io.Reader) (err error) {
return WriteReader(a.Fs, path, r)
}
func WriteReader(fs Fs, path string, r io.Reader) (err error) {
dir, _ := filepath.Split(path)
ospath := filepath.FromSlash(dir)
if ospath != "" {
err = fs.MkdirAll(ospath, 0777) // rwx, rw, r
if err != nil {
if err != os.ErrExist {
return err
}
}
}
file, err := fs.Create(path)
if err != nil {
return
}
defer file.Close()
_, err = io.Copy(file, r)
return
}
// Same as WriteReader but checks to see if file/directory already exists.
func (a Afero) SafeWriteReader(path string, r io.Reader) (err error) {
return SafeWriteReader(a.Fs, path, r)
}
func SafeWriteReader(fs Fs, path string, r io.Reader) (err error) {
dir, _ := filepath.Split(path)
ospath := filepath.FromSlash(dir)
if ospath != "" {
err = fs.MkdirAll(ospath, 0777) // rwx, rw, r
if err != nil {
return
}
}
exists, err := Exists(fs, path)
if err != nil {
return
}
if exists {
return fmt.Errorf("%v already exists", path)
}
file, err := fs.Create(path)
if err != nil {
return
}
defer file.Close()
_, err = io.Copy(file, r)
return
}
func (a Afero) GetTempDir(subPath string) string {
return GetTempDir(a.Fs, subPath)
}
// GetTempDir returns the default temp directory with trailing slash
// if subPath is not empty then it will be created recursively with mode 777 rwx rwx rwx
func GetTempDir(fs Fs, subPath string) string {
addSlash := func(p string) string {
if FilePathSeparator != p[len(p)-1:] {
p = p + FilePathSeparator
}
return p
}
dir := addSlash(os.TempDir())
if subPath != "" {
// preserve windows backslash :-(
if FilePathSeparator == "\\" {
subPath = strings.Replace(subPath, "\\", "____", -1)
}
dir = dir + UnicodeSanitize((subPath))
if FilePathSeparator == "\\" {
dir = strings.Replace(dir, "____", "\\", -1)
}
if exists, _ := Exists(fs, dir); exists {
return addSlash(dir)
}
err := fs.MkdirAll(dir, 0777)
if err != nil {
panic(err)
}
dir = addSlash(dir)
}
return dir
}
// Rewrite string to remove non-standard path characters
func UnicodeSanitize(s string) string {
source := []rune(s)
target := make([]rune, 0, len(source))
for _, r := range source {
if unicode.IsLetter(r) ||
unicode.IsDigit(r) ||
unicode.IsMark(r) ||
r == '.' ||
r == '/' ||
r == '\\' ||
r == '_' ||
r == '-' ||
r == '%' ||
r == ' ' ||
r == '#' {
target = append(target, r)
}
}
return string(target)
}
// Transform characters with accents into plain forms.
func NeuterAccents(s string) string {
t := transform.Chain(norm.NFD, transform.RemoveFunc(isMn), norm.NFC)
result, _, _ := transform.String(t, string(s))
return result
}
func isMn(r rune) bool {
return unicode.Is(unicode.Mn, r) // Mn: nonspacing marks
}
func (a Afero) FileContainsBytes(filename string, subslice []byte) (bool, error) {
return FileContainsBytes(a.Fs, filename, subslice)
}
// Check if a file contains a specified byte slice.
func FileContainsBytes(fs Fs, filename string, subslice []byte) (bool, error) {
f, err := fs.Open(filename)
if err != nil {
return false, err
}
defer f.Close()
return readerContainsAny(f, subslice), nil
}
func (a Afero) FileContainsAnyBytes(filename string, subslices [][]byte) (bool, error) {
return FileContainsAnyBytes(a.Fs, filename, subslices)
}
// Check if a file contains any of the specified byte slices.
func FileContainsAnyBytes(fs Fs, filename string, subslices [][]byte) (bool, error) {
f, err := fs.Open(filename)
if err != nil {
return false, err
}
defer f.Close()
return readerContainsAny(f, subslices...), nil
}
// readerContains reports whether any of the subslices is within r.
func readerContainsAny(r io.Reader, subslices ...[]byte) bool {
if r == nil || len(subslices) == 0 {
return false
}
largestSlice := 0
for _, sl := range subslices {
if len(sl) > largestSlice {
largestSlice = len(sl)
}
}
if largestSlice == 0 {
return false
}
bufflen := largestSlice * 4
halflen := bufflen / 2
buff := make([]byte, bufflen)
var err error
var n, i int
for {
i++
if i == 1 {
n, err = io.ReadAtLeast(r, buff[:halflen], halflen)
} else {
if i != 2 {
// shift left to catch overlapping matches
copy(buff[:], buff[halflen:])
}
n, err = io.ReadAtLeast(r, buff[halflen:], halflen)
}
if n > 0 {
for _, sl := range subslices {
if bytes.Contains(buff, sl) {
return true
}
}
}
if err != nil {
break
}
}
return false
}
func (a Afero) DirExists(path string) (bool, error) {
return DirExists(a.Fs, path)
}
// DirExists checks if a path exists and is a directory.
func DirExists(fs Fs, path string) (bool, error) {
fi, err := fs.Stat(path)
if err == nil && fi.IsDir() {
return true, nil
}
if os.IsNotExist(err) {
return false, nil
}
return false, err
}
func (a Afero) IsDir(path string) (bool, error) {
return IsDir(a.Fs, path)
}
// IsDir checks if a given path is a directory.
func IsDir(fs Fs, path string) (bool, error) {
fi, err := fs.Stat(path)
if err != nil {
return false, err
}
return fi.IsDir(), nil
}
func (a Afero) IsEmpty(path string) (bool, error) {
return IsEmpty(a.Fs, path)
}
// IsEmpty checks if a given file or directory is empty.
func IsEmpty(fs Fs, path string) (bool, error) {
if b, _ := Exists(fs, path); !b {
return false, fmt.Errorf("%q path does not exist", path)
}
fi, err := fs.Stat(path)
if err != nil {
return false, err
}
if fi.IsDir() {
f, err := fs.Open(path)
if err != nil {
return false, err
}
defer f.Close()
list, err := f.Readdir(-1)
return len(list) == 0, nil
}
return fi.Size() == 0, nil
}
func (a Afero) Exists(path string) (bool, error) {
return Exists(a.Fs, path)
}
// Check if a file or directory exists.
func Exists(fs Fs, path string) (bool, error) {
_, err := fs.Stat(path)
if err == nil {
return true, nil
}
if os.IsNotExist(err) {
return false, nil
}
return false, err
}
func FullBaseFsPath(basePathFs *BasePathFs, relativePath string) string {
combinedPath := filepath.Join(basePathFs.path, relativePath)
if parent, ok := basePathFs.source.(*BasePathFs); ok {
return FullBaseFsPath(parent, combinedPath)
}
return combinedPath
}