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d0888edc0a
Fix spelling of: above, already, anonymous, associated, authentication, bandwidth, because, between, blocks, calculate, candidates, cautious, changelog, cleaner, clipboard, command, completely, concurrently, considered, constructs, corrupt, current, daemon, dependencies, deprecated, directory, dispatcher, download, eligible, ellipsis, encrypter, endpoint, entrieslist, essentially, existing writers, existing, expires, filesystem, flushing, frequently, hierarchy, however, implementation, implements, inaccurate, individually, insensitive, longer, maximum, metadata, modified, multipart, namedirfirst, nextcloud, obscured, opened, optional, owncloud, pacific, passphrase, password, permanently, persimmon, positive, potato, protocol, quota, receiving, recommends, referring, requires, revisited, satisfied, satisfies, satisfy, semver, serialized, session, storage, strategies, stringlist, successful, supported, surprise, temporarily, temporary, transactions, unneeded, update, uploads, wrapped Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>
108 lines
2.9 KiB
Go
108 lines
2.9 KiB
Go
package vfs
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import (
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"io"
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"os"
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)
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// DirHandle represents an open directory
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type DirHandle struct {
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baseHandle
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d *Dir
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fis []os.FileInfo // where Readdir got to
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}
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// newDirHandle opens a directory for read
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func newDirHandle(d *Dir) *DirHandle {
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return &DirHandle{
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d: d,
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}
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}
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// String converts it to printable
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func (fh *DirHandle) String() string {
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if fh == nil {
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return "<nil *DirHandle>"
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}
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if fh.d == nil {
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return "<nil *DirHandle.d>"
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}
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return fh.d.String() + " (r)"
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}
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// Stat returns info about the current directory
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func (fh *DirHandle) Stat() (fi os.FileInfo, err error) {
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return fh.d, nil
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}
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// Node returns the Node associated with this - satisfies Noder interface
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func (fh *DirHandle) Node() Node {
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return fh.d
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}
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// Readdir reads the contents of the directory associated with file and returns
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// a slice of up to n FileInfo values, as would be returned by Lstat, in
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// directory order. Subsequent calls on the same file will yield further
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// FileInfos.
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//
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// If n > 0, Readdir returns at most n FileInfo structures. In this case, if
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// Readdir returns an empty slice, it will return a non-nil error explaining
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// why. At the end of a directory, the error is io.EOF.
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//
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// If n <= 0, Readdir returns all the FileInfo from the directory in a single
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// slice. In this case, if Readdir succeeds (reads all the way to the end of
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// the directory), it returns the slice and a nil error. If it encounters an
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// error before the end of the directory, Readdir returns the FileInfo read
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// until that point and a non-nil error.
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func (fh *DirHandle) Readdir(n int) (fis []os.FileInfo, err error) {
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if fh.fis == nil {
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nodes, err := fh.d.ReadDirAll()
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if err != nil {
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return nil, err
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}
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fh.fis = []os.FileInfo{}
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for _, node := range nodes {
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fh.fis = append(fh.fis, node)
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}
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}
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nn := len(fh.fis)
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if n > 0 {
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if nn == 0 {
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return nil, io.EOF
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}
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if nn > n {
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nn = n
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}
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}
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fis, fh.fis = fh.fis[:nn], fh.fis[nn:]
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return fis, nil
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}
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// Readdirnames reads and returns a slice of names from the directory f.
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//
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// If n > 0, Readdirnames returns at most n names. In this case, if
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// Readdirnames returns an empty slice, it will return a non-nil error
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// explaining why. At the end of a directory, the error is io.EOF.
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//
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// If n <= 0, Readdirnames returns all the names from the directory in a single
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// slice. In this case, if Readdirnames succeeds (reads all the way to the end
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// of the directory), it returns the slice and a nil error. If it encounters an
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// error before the end of the directory, Readdirnames returns the names read
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// until that point and a non-nil error.
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func (fh *DirHandle) Readdirnames(n int) (names []string, err error) {
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nodes, err := fh.Readdir(n)
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if err != nil {
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return nil, err
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}
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for _, node := range nodes {
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names = append(names, node.Name())
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}
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return names, nil
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}
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// Close closes the handle
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func (fh *DirHandle) Close() (err error) {
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fh.fis = nil
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return nil
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}
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