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Refactor: break out walkDir method

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This commit is contained in:
Jakob Borg 2015-11-20 09:54:12 +01:00
parent 6dbb072d11
commit 69dcdafb3d
1 changed files with 44 additions and 35 deletions
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79
lib/scanner/walk.go
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@ -271,42 +271,9 @@ func (w *Walker) walkAndHashFiles(fchan, dchan chan protocol.FileInfo) filepath.
}
if info.Mode().IsDir() {
if w.CurrentFiler != nil {
// A directory is "unchanged", if it
// - exists
// - has the same permissions as previously, unless we are ignoring permissions
// - was not marked deleted (since it apparently exists now)
// - was a directory previously (not a file or something else)
// - was not a symlink (since it's a directory now)
// - was not invalid (since it looks valid now)
cf, ok = w.CurrentFiler.CurrentFile(relPath)
permUnchanged := w.IgnorePerms || !cf.HasPermissionBits() || PermsEqual(cf.Flags, uint32(info.Mode()))
if ok && permUnchanged && !cf.IsDeleted() && cf.IsDirectory() && !cf.IsSymlink() && !cf.IsInvalid() {
return nil
}
if err := w.walkDir(relPath, info, mtime, dchan); err != nil {
return err
}
flags := uint32(protocol.FlagDirectory)
if w.IgnorePerms {
flags |= protocol.FlagNoPermBits | 0777
} else {
flags |= uint32(info.Mode() & maskModePerm)
}
f := protocol.FileInfo{
Name: relPath,
Version: cf.Version.Update(w.ShortID),
Flags: flags,
Modified: mtime.Unix(),
}
l.Debugln("dir:", absPath, f)
select {
case dchan <- f:
case <-w.Cancel:
return errors.New("cancelled")
}
return nil
}
if info.Mode().IsRegular() {
@ -360,6 +327,48 @@ func (w *Walker) walkAndHashFiles(fchan, dchan chan protocol.FileInfo) filepath.
}
}
func (w *Walker) walkDir(relPath string, info os.FileInfo, mtime time.Time, dchan chan protocol.FileInfo) error {
var currentVersion protocol.Vector
if w.CurrentFiler != nil {
// A directory is "unchanged", if it
// - exists
// - has the same permissions as previously, unless we are ignoring permissions
// - was not marked deleted (since it apparently exists now)
// - was a directory previously (not a file or something else)
// - was not a symlink (since it's a directory now)
// - was not invalid (since it looks valid now)
cf, ok := w.CurrentFiler.CurrentFile(relPath)
permUnchanged := w.IgnorePerms || !cf.HasPermissionBits() || PermsEqual(cf.Flags, uint32(info.Mode()))
if ok && permUnchanged && !cf.IsDeleted() && cf.IsDirectory() && !cf.IsSymlink() && !cf.IsInvalid() {
return nil
}
currentVersion = cf.Version
}
flags := uint32(protocol.FlagDirectory)
if w.IgnorePerms {
flags |= protocol.FlagNoPermBits | 0777
} else {
flags |= uint32(info.Mode() & maskModePerm)
}
f := protocol.FileInfo{
Name: relPath,
Version: currentVersion.Update(w.ShortID),
Flags: flags,
Modified: mtime.Unix(),
}
l.Debugln("dir:", relPath, f)
select {
case dchan <- f:
case <-w.Cancel:
return errors.New("cancelled")
}
return nil
}
// walkSymlinks returns true if the symlink should be skipped, or an error if
// we should stop walking altogether.
func (w *Walker) walkSymlink(absPath, relPath string, dchan chan protocol.FileInfo) (skip bool, err error) {