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The archiver uses FS.OpenFile, where FS is an instance of the FS interface. This is different from fs.OpenFile, which uses the OpenFile method provided by the fs package.
99 lines
3.0 KiB
Go
99 lines
3.0 KiB
Go
package fs
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import (
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"os"
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"path/filepath"
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)
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// Local is the local file system. Most methods are just passed on to the stdlib.
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type Local struct{}
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// statically ensure that Local implements FS.
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var _ FS = &Local{}
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// VolumeName returns leading volume name. Given "C:\foo\bar" it returns "C:"
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// on Windows. Given "\\host\share\foo" it returns "\\host\share". On other
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// platforms it returns "".
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func (fs Local) VolumeName(path string) string {
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return filepath.VolumeName(path)
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}
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// Open opens a file for reading.
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func (fs Local) Open(name string) (File, error) {
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f, err := os.Open(fixpath(name))
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if err != nil {
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return nil, err
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}
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_ = setFlags(f)
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return f, nil
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}
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// OpenFile is the generalized open call; most users will use Open
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// or Create instead. It opens the named file with specified flag
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// (O_RDONLY etc.) and perm, (0666 etc.) if applicable. If successful,
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// methods on the returned File can be used for I/O.
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// If there is an error, it will be of type *PathError.
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func (fs Local) OpenFile(name string, flag int, perm os.FileMode) (File, error) {
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f, err := os.OpenFile(fixpath(name), flag, perm)
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if err != nil {
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return nil, err
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}
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_ = setFlags(f)
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return f, nil
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}
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// Stat returns a FileInfo describing the named file. If there is an error, it
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// will be of type *PathError.
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func (fs Local) Stat(name string) (os.FileInfo, error) {
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return os.Stat(fixpath(name))
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}
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// Lstat returns the FileInfo structure describing the named file.
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// If the file is a symbolic link, the returned FileInfo
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// describes the symbolic link. Lstat makes no attempt to follow the link.
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// If there is an error, it will be of type *PathError.
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func (fs Local) Lstat(name string) (os.FileInfo, error) {
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return os.Lstat(fixpath(name))
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}
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// Join joins any number of path elements into a single path, adding a
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// Separator if necessary. Join calls Clean on the result; in particular, all
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// empty strings are ignored. On Windows, the result is a UNC path if and only
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// if the first path element is a UNC path.
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func (fs Local) Join(elem ...string) string {
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return filepath.Join(elem...)
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}
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// Separator returns the OS and FS dependent separator for dirs/subdirs/files.
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func (fs Local) Separator() string {
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return string(filepath.Separator)
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}
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// IsAbs reports whether the path is absolute.
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func (fs Local) IsAbs(path string) bool {
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return filepath.IsAbs(path)
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}
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// Abs returns an absolute representation of path. If the path is not absolute
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// it will be joined with the current working directory to turn it into an
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// absolute path. The absolute path name for a given file is not guaranteed to
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// be unique. Abs calls Clean on the result.
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func (fs Local) Abs(path string) (string, error) {
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return filepath.Abs(path)
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}
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// Clean returns the cleaned path. For details, see filepath.Clean.
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func (fs Local) Clean(p string) string {
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return filepath.Clean(p)
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}
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// Base returns the last element of path.
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func (fs Local) Base(path string) string {
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return filepath.Base(path)
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}
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// Dir returns path without the last element.
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func (fs Local) Dir(path string) string {
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return filepath.Dir(path)
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}
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