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author | 2025-03-09 17:47:56 +0100 | |
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committer | 2025-03-10 01:59:49 +0100 | |
commit | 3ac1ee16f377d31a0fb80c8dae28b6239ac4229e (patch) | |
tree | f61faa581feaaeaba2542b9f2b8234a590684413 /vendor/github.com/spf13/afero/memmap.go | |
parent | [chore] update URLs to forked source (diff) | |
download | gotosocial-3ac1ee16f377d31a0fb80c8dae28b6239ac4229e.tar.xz |
[chore] remove vendor
Diffstat (limited to 'vendor/github.com/spf13/afero/memmap.go')
-rw-r--r-- | vendor/github.com/spf13/afero/memmap.go | 465 |
1 files changed, 0 insertions, 465 deletions
diff --git a/vendor/github.com/spf13/afero/memmap.go b/vendor/github.com/spf13/afero/memmap.go deleted file mode 100644 index d6c744e8d..000000000 --- a/vendor/github.com/spf13/afero/memmap.go +++ /dev/null @@ -1,465 +0,0 @@ -// Copyright © 2014 Steve Francia <spf@spf13.com>. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package afero - -import ( - "fmt" - "io" - - "log" - "os" - "path/filepath" - - "sort" - "strings" - "sync" - "time" - - "github.com/spf13/afero/mem" -) - -const chmodBits = os.ModePerm | os.ModeSetuid | os.ModeSetgid | os.ModeSticky // Only a subset of bits are allowed to be changed. Documented under os.Chmod() - -type MemMapFs struct { - mu sync.RWMutex - data map[string]*mem.FileData - init sync.Once -} - -func NewMemMapFs() Fs { - return &MemMapFs{} -} - -func (m *MemMapFs) getData() map[string]*mem.FileData { - m.init.Do(func() { - m.data = make(map[string]*mem.FileData) - // Root should always exist, right? - // TODO: what about windows? - root := mem.CreateDir(FilePathSeparator) - mem.SetMode(root, os.ModeDir|0o755) - m.data[FilePathSeparator] = root - }) - return m.data -} - -func (*MemMapFs) Name() string { return "MemMapFS" } - -func (m *MemMapFs) Create(name string) (File, error) { - name = normalizePath(name) - m.mu.Lock() - file := mem.CreateFile(name) - m.getData()[name] = file - m.registerWithParent(file, 0) - m.mu.Unlock() - return mem.NewFileHandle(file), nil -} - -func (m *MemMapFs) unRegisterWithParent(fileName string) error { - f, err := m.lockfreeOpen(fileName) - if err != nil { - return err - } - parent := m.findParent(f) - if parent == nil { - log.Panic("parent of ", f.Name(), " is nil") - } - - parent.Lock() - mem.RemoveFromMemDir(parent, f) - parent.Unlock() - return nil -} - -func (m *MemMapFs) findParent(f *mem.FileData) *mem.FileData { - pdir, _ := filepath.Split(f.Name()) - pdir = filepath.Clean(pdir) - pfile, err := m.lockfreeOpen(pdir) - if err != nil { - return nil - } - return pfile -} - -func (m *MemMapFs) findDescendants(name string) []*mem.FileData { - fData := m.getData() - descendants := make([]*mem.FileData, 0, len(fData)) - for p, dFile := range fData { - if strings.HasPrefix(p, name+FilePathSeparator) { - descendants = append(descendants, dFile) - } - } - - sort.Slice(descendants, func(i, j int) bool { - cur := len(strings.Split(descendants[i].Name(), FilePathSeparator)) - next := len(strings.Split(descendants[j].Name(), FilePathSeparator)) - return cur < next - }) - - return descendants -} - -func (m *MemMapFs) registerWithParent(f *mem.FileData, perm os.FileMode) { - if f == nil { - return - } - parent := m.findParent(f) - if parent == nil { - pdir := filepath.Dir(filepath.Clean(f.Name())) - err := m.lockfreeMkdir(pdir, perm) - if err != nil { - // log.Println("Mkdir error:", err) - return - } - parent, err = m.lockfreeOpen(pdir) - if err != nil { - // log.Println("Open after Mkdir error:", err) - return - } - } - - parent.Lock() - mem.InitializeDir(parent) - mem.AddToMemDir(parent, f) - parent.Unlock() -} - -func (m *MemMapFs) lockfreeMkdir(name string, perm os.FileMode) error { - name = normalizePath(name) - x, ok := m.getData()[name] - if ok { - // Only return ErrFileExists if it's a file, not a directory. - i := mem.FileInfo{FileData: x} - if !i.IsDir() { - return ErrFileExists - } - } else { - item := mem.CreateDir(name) - mem.SetMode(item, os.ModeDir|perm) - m.getData()[name] = item - m.registerWithParent(item, perm) - } - return nil -} - -func (m *MemMapFs) Mkdir(name string, perm os.FileMode) error { - perm &= chmodBits - name = normalizePath(name) - - m.mu.RLock() - _, ok := m.getData()[name] - m.mu.RUnlock() - if ok { - return &os.PathError{Op: "mkdir", Path: name, Err: ErrFileExists} - } - - m.mu.Lock() - // Dobule check that it doesn't exist. - if _, ok := m.getData()[name]; ok { - m.mu.Unlock() - return &os.PathError{Op: "mkdir", Path: name, Err: ErrFileExists} - } - item := mem.CreateDir(name) - mem.SetMode(item, os.ModeDir|perm) - m.getData()[name] = item - m.registerWithParent(item, perm) - m.mu.Unlock() - - return m.setFileMode(name, perm|os.ModeDir) -} - -func (m *MemMapFs) MkdirAll(path string, perm os.FileMode) error { - err := m.Mkdir(path, perm) - if err != nil { - if err.(*os.PathError).Err == ErrFileExists { - return nil - } - return err - } - return nil -} - -// Handle some relative paths -func normalizePath(path string) string { - path = filepath.Clean(path) - - switch path { - case ".": - return FilePathSeparator - case "..": - return FilePathSeparator - default: - return path - } -} - -func (m *MemMapFs) Open(name string) (File, error) { - f, err := m.open(name) - if f != nil { - return mem.NewReadOnlyFileHandle(f), err - } - return nil, err -} - -func (m *MemMapFs) openWrite(name string) (File, error) { - f, err := m.open(name) - if f != nil { - return mem.NewFileHandle(f), err - } - return nil, err -} - -func (m *MemMapFs) open(name string) (*mem.FileData, error) { - name = normalizePath(name) - - m.mu.RLock() - f, ok := m.getData()[name] - m.mu.RUnlock() - if !ok { - return nil, &os.PathError{Op: "open", Path: name, Err: ErrFileNotFound} - } - return f, nil -} - -func (m *MemMapFs) lockfreeOpen(name string) (*mem.FileData, error) { - name = normalizePath(name) - f, ok := m.getData()[name] - if ok { - return f, nil - } else { - return nil, ErrFileNotFound - } -} - -func (m *MemMapFs) OpenFile(name string, flag int, perm os.FileMode) (File, error) { - perm &= chmodBits - chmod := false - file, err := m.openWrite(name) - if err == nil && (flag&os.O_EXCL > 0) { - return nil, &os.PathError{Op: "open", Path: name, Err: ErrFileExists} - } - if os.IsNotExist(err) && (flag&os.O_CREATE > 0) { - file, err = m.Create(name) - chmod = true - } - if err != nil { - return nil, err - } - if flag == os.O_RDONLY { - file = mem.NewReadOnlyFileHandle(file.(*mem.File).Data()) - } - if flag&os.O_APPEND > 0 { - _, err = file.Seek(0, io.SeekEnd) - if err != nil { - file.Close() - return nil, err - } - } - if flag&os.O_TRUNC > 0 && flag&(os.O_RDWR|os.O_WRONLY) > 0 { - err = file.Truncate(0) - if err != nil { - file.Close() - return nil, err - } - } - if chmod { - return file, m.setFileMode(name, perm) - } - return file, nil -} - -func (m *MemMapFs) Remove(name string) error { - name = normalizePath(name) - - m.mu.Lock() - defer m.mu.Unlock() - - if _, ok := m.getData()[name]; ok { - err := m.unRegisterWithParent(name) - if err != nil { - return &os.PathError{Op: "remove", Path: name, Err: err} - } - delete(m.getData(), name) - } else { - return &os.PathError{Op: "remove", Path: name, Err: os.ErrNotExist} - } - return nil -} - -func (m *MemMapFs) RemoveAll(path string) error { - path = normalizePath(path) - m.mu.Lock() - m.unRegisterWithParent(path) - m.mu.Unlock() - - m.mu.RLock() - defer m.mu.RUnlock() - - for p := range m.getData() { - if p == path || strings.HasPrefix(p, path+FilePathSeparator) { - m.mu.RUnlock() - m.mu.Lock() - delete(m.getData(), p) - m.mu.Unlock() - m.mu.RLock() - } - } - return nil -} - -func (m *MemMapFs) Rename(oldname, newname string) error { - oldname = normalizePath(oldname) - newname = normalizePath(newname) - - if oldname == newname { - return nil - } - - m.mu.RLock() - defer m.mu.RUnlock() - if _, ok := m.getData()[oldname]; ok { - m.mu.RUnlock() - m.mu.Lock() - err := m.unRegisterWithParent(oldname) - if err != nil { - return err - } - - fileData := m.getData()[oldname] - mem.ChangeFileName(fileData, newname) - m.getData()[newname] = fileData - - err = m.renameDescendants(oldname, newname) - if err != nil { - return err - } - - delete(m.getData(), oldname) - - m.registerWithParent(fileData, 0) - m.mu.Unlock() - m.mu.RLock() - } else { - return &os.PathError{Op: "rename", Path: oldname, Err: ErrFileNotFound} - } - return nil -} - -func (m *MemMapFs) renameDescendants(oldname, newname string) error { - descendants := m.findDescendants(oldname) - removes := make([]string, 0, len(descendants)) - for _, desc := range descendants { - descNewName := strings.Replace(desc.Name(), oldname, newname, 1) - err := m.unRegisterWithParent(desc.Name()) - if err != nil { - return err - } - - removes = append(removes, desc.Name()) - mem.ChangeFileName(desc, descNewName) - m.getData()[descNewName] = desc - - m.registerWithParent(desc, 0) - } - for _, r := range removes { - delete(m.getData(), r) - } - - return nil -} - -func (m *MemMapFs) LstatIfPossible(name string) (os.FileInfo, bool, error) { - fileInfo, err := m.Stat(name) - return fileInfo, false, err -} - -func (m *MemMapFs) Stat(name string) (os.FileInfo, error) { - f, err := m.Open(name) - if err != nil { - return nil, err - } - fi := mem.GetFileInfo(f.(*mem.File).Data()) - return fi, nil -} - -func (m *MemMapFs) Chmod(name string, mode os.FileMode) error { - mode &= chmodBits - - m.mu.RLock() - f, ok := m.getData()[name] - m.mu.RUnlock() - if !ok { - return &os.PathError{Op: "chmod", Path: name, Err: ErrFileNotFound} - } - prevOtherBits := mem.GetFileInfo(f).Mode() & ^chmodBits - - mode = prevOtherBits | mode - return m.setFileMode(name, mode) -} - -func (m *MemMapFs) setFileMode(name string, mode os.FileMode) error { - name = normalizePath(name) - - m.mu.RLock() - f, ok := m.getData()[name] - m.mu.RUnlock() - if !ok { - return &os.PathError{Op: "chmod", Path: name, Err: ErrFileNotFound} - } - - m.mu.Lock() - mem.SetMode(f, mode) - m.mu.Unlock() - - return nil -} - -func (m *MemMapFs) Chown(name string, uid, gid int) error { - name = normalizePath(name) - - m.mu.RLock() - f, ok := m.getData()[name] - m.mu.RUnlock() - if !ok { - return &os.PathError{Op: "chown", Path: name, Err: ErrFileNotFound} - } - - mem.SetUID(f, uid) - mem.SetGID(f, gid) - - return nil -} - -func (m *MemMapFs) Chtimes(name string, atime time.Time, mtime time.Time) error { - name = normalizePath(name) - - m.mu.RLock() - f, ok := m.getData()[name] - m.mu.RUnlock() - if !ok { - return &os.PathError{Op: "chtimes", Path: name, Err: ErrFileNotFound} - } - - m.mu.Lock() - mem.SetModTime(f, mtime) - m.mu.Unlock() - - return nil -} - -func (m *MemMapFs) List() { - for _, x := range m.data { - y := mem.FileInfo{FileData: x} - fmt.Println(x.Name(), y.Size()) - } -} |