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7b302d8c29
Afero is a package that lets you mock out a filesystem with an in-memory filesystem. It allows us to easily create the files required for a given test without worrying about a cleanup step or different tests tripping on eachother when run in parallel. Later on I'll standardise on using afero over the vanilla os package
97 lines
2.1 KiB
Go
97 lines
2.1 KiB
Go
package afero
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import (
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"os"
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"syscall"
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"time"
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)
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var _ Lstater = (*ReadOnlyFs)(nil)
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type ReadOnlyFs struct {
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source Fs
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}
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func NewReadOnlyFs(source Fs) Fs {
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return &ReadOnlyFs{source: source}
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}
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func (r *ReadOnlyFs) ReadDir(name string) ([]os.FileInfo, error) {
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return ReadDir(r.source, name)
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}
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func (r *ReadOnlyFs) Chtimes(n string, a, m time.Time) error {
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return syscall.EPERM
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}
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func (r *ReadOnlyFs) Chmod(n string, m os.FileMode) error {
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return syscall.EPERM
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}
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func (r *ReadOnlyFs) Chown(n string, uid, gid int) error {
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return syscall.EPERM
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}
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func (r *ReadOnlyFs) Name() string {
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return "ReadOnlyFilter"
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}
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func (r *ReadOnlyFs) Stat(name string) (os.FileInfo, error) {
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return r.source.Stat(name)
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}
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func (r *ReadOnlyFs) LstatIfPossible(name string) (os.FileInfo, bool, error) {
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if lsf, ok := r.source.(Lstater); ok {
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return lsf.LstatIfPossible(name)
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}
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fi, err := r.Stat(name)
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return fi, false, err
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}
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func (r *ReadOnlyFs) SymlinkIfPossible(oldname, newname string) error {
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return &os.LinkError{Op: "symlink", Old: oldname, New: newname, Err: ErrNoSymlink}
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}
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func (r *ReadOnlyFs) ReadlinkIfPossible(name string) (string, error) {
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if srdr, ok := r.source.(LinkReader); ok {
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return srdr.ReadlinkIfPossible(name)
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}
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return "", &os.PathError{Op: "readlink", Path: name, Err: ErrNoReadlink}
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}
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func (r *ReadOnlyFs) Rename(o, n string) error {
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return syscall.EPERM
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}
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func (r *ReadOnlyFs) RemoveAll(p string) error {
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return syscall.EPERM
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}
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func (r *ReadOnlyFs) Remove(n string) error {
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return syscall.EPERM
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}
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func (r *ReadOnlyFs) OpenFile(name string, flag int, perm os.FileMode) (File, error) {
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if flag&(os.O_WRONLY|syscall.O_RDWR|os.O_APPEND|os.O_CREATE|os.O_TRUNC) != 0 {
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return nil, syscall.EPERM
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}
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return r.source.OpenFile(name, flag, perm)
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}
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func (r *ReadOnlyFs) Open(n string) (File, error) {
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return r.source.Open(n)
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}
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func (r *ReadOnlyFs) Mkdir(n string, p os.FileMode) error {
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return syscall.EPERM
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}
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func (r *ReadOnlyFs) MkdirAll(n string, p os.FileMode) error {
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return syscall.EPERM
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}
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func (r *ReadOnlyFs) Create(n string) (File, error) {
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return nil, syscall.EPERM
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}
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