mirror of https://github.com/pkg/sftp.git
138 lines
3.3 KiB
Go
138 lines
3.3 KiB
Go
package sftp
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import (
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"path"
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"strings"
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)
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// ErrBadPattern indicates a globbing pattern was malformed.
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var ErrBadPattern = path.ErrBadPattern
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// Match reports whether name matches the shell pattern.
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//
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// This is an alias for path.Match from the standard library,
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// offered so that callers need not import the path package.
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// For details, see https://golang.org/pkg/path/#Match.
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func Match(pattern, name string) (matched bool, err error) {
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return path.Match(pattern, name)
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}
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// detect if byte(char) is path separator
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func isPathSeparator(c byte) bool {
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return c == '/'
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}
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// Split splits the path p immediately following the final slash,
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// separating it into a directory and file name component.
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//
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// This is an alias for path.Split from the standard library,
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// offered so that callers need not import the path package.
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// For details, see https://golang.org/pkg/path/#Split.
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func Split(p string) (dir, file string) {
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return path.Split(p)
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}
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// Glob returns the names of all files matching pattern or nil
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// if there is no matching file. The syntax of patterns is the same
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// as in Match. The pattern may describe hierarchical names such as
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// /usr/*/bin/ed.
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//
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// Glob ignores file system errors such as I/O errors reading directories.
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// The only possible returned error is ErrBadPattern, when pattern
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// is malformed.
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func (c *Client) Glob(pattern string) (matches []string, err error) {
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if !hasMeta(pattern) {
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file, err := c.Lstat(pattern)
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if err != nil {
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return nil, nil
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}
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dir, _ := Split(pattern)
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dir = cleanGlobPath(dir)
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return []string{Join(dir, file.Name())}, nil
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}
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dir, file := Split(pattern)
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dir = cleanGlobPath(dir)
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if !hasMeta(dir) {
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return c.glob(dir, file, nil)
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}
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// Prevent infinite recursion. See issue 15879.
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if dir == pattern {
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return nil, ErrBadPattern
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}
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var m []string
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m, err = c.Glob(dir)
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if err != nil {
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return
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}
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for _, d := range m {
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matches, err = c.glob(d, file, matches)
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if err != nil {
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return
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}
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}
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return
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}
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// cleanGlobPath prepares path for glob matching.
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func cleanGlobPath(path string) string {
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switch path {
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case "":
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return "."
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case "/":
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return path
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default:
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return path[0 : len(path)-1] // chop off trailing separator
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}
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}
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// glob searches for files matching pattern in the directory dir
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// and appends them to matches. If the directory cannot be
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// opened, it returns the existing matches. New matches are
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// added in lexicographical order.
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func (c *Client) glob(dir, pattern string, matches []string) (m []string, e error) {
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m = matches
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fi, err := c.Stat(dir)
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if err != nil {
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return
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}
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if !fi.IsDir() {
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return
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}
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names, err := c.ReadDir(dir)
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if err != nil {
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return
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}
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//sort.Strings(names)
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for _, n := range names {
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matched, err := Match(pattern, n.Name())
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if err != nil {
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return m, err
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}
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if matched {
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m = append(m, Join(dir, n.Name()))
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}
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}
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return
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}
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// Join joins any number of path elements into a single path, separating
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// them with slashes.
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//
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// This is an alias for path.Join from the standard library,
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// offered so that callers need not import the path package.
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// For details, see https://golang.org/pkg/path/#Join.
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func Join(elem ...string) string {
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return path.Join(elem...)
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}
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// hasMeta reports whether path contains any of the magic characters
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// recognized by Match.
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func hasMeta(path string) bool {
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return strings.ContainsAny(path, "\\*?[")
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}
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