1 files changed, 0 insertions, 292 deletions
diff --git a/vendor/github.com/spf13/afero/copyOnWriteFs.go b/vendor/github.com/spf13/afero/copyOnWriteFs.go
deleted file mode 100644
index 9aef397..0000000
--- a/vendor/github.com/spf13/afero/copyOnWriteFs.go
+++ /dev/null
@@ -1,292 +0,0 @@
-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 syscall.EEXIST
-	}
-	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 {
-		return syscall.EEXIST
-	}
-	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)
-}