4066cd7ad1
Signed-off-by: Michael Mayer <michael@photoprism.app>
231 lines
4.7 KiB
Go
231 lines
4.7 KiB
Go
/*
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Package fs provides filesystem related constants and functions.
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Copyright (c) 2018 - 2023 PhotoPrism UG. All rights reserved.
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This program is free software: you can redistribute it and/or modify
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it under Version 3 of the GNU Affero General Public License (the "AGPL"):
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<https://docs.photoprism.app/license/agpl>
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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The AGPL is supplemented by our Trademark and Brand Guidelines,
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which describe how our Brand Assets may be used:
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<https://photoprism.app/trademark>
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Feel free to send an email to hello@photoprism.app if you have questions,
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want to support our work, or just want to say hello.
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Additional information can be found in our Developer Guide:
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<https://docs.photoprism.app/developer-guide/>
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*/
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package fs
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import (
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"archive/zip"
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"fmt"
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"io"
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"net/http"
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"os"
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"os/user"
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"path/filepath"
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"strings"
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"syscall"
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)
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var ignoreCase bool
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const IgnoreFile = ".ppignore"
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const HiddenPath = ".photoprism"
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const PathSeparator = string(filepath.Separator)
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const Home = "~"
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const HomePath = Home + PathSeparator
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// FileExists returns true if file exists and is not a directory.
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func FileExists(fileName string) bool {
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if fileName == "" {
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return false
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}
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info, err := os.Stat(fileName)
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return err == nil && !info.IsDir()
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}
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// FileExistsNotEmpty returns true if file exists, is not a directory, and not empty.
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func FileExistsNotEmpty(fileName string) bool {
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if fileName == "" {
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return false
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}
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info, err := os.Stat(fileName)
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return err == nil && !info.IsDir() && info.Size() > 0
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}
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// PathExists tests if a path exists, and is a directory or symlink.
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func PathExists(path string) bool {
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if path == "" {
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return false
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}
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info, err := os.Stat(path)
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if err != nil {
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return false
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}
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m := info.Mode()
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return m&os.ModeDir != 0 || m&os.ModeSymlink != 0
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}
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// Writable checks if the path is accessible for reading and writing.
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func Writable(path string) bool {
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if path == "" {
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return false
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}
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return syscall.Access(path, syscall.O_RDWR) == nil
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}
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// PathWritable tests if a path exists and is writable.
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func PathWritable(path string) bool {
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if !PathExists(path) {
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return false
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}
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return Writable(path)
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}
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// Overwrite overwrites the file with data. Creates file if not present.
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func Overwrite(fileName string, data []byte) bool {
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f, err := os.Create(fileName)
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if err != nil {
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return false
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}
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_, err = f.Write(data)
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return err == nil
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}
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// Abs returns the full path of a file or directory, "~" is replaced with home.
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func Abs(name string) string {
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if name == "" {
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return ""
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}
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if len(name) > 2 && name[:2] == HomePath {
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if usr, err := user.Current(); err == nil {
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name = filepath.Join(usr.HomeDir, name[2:])
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}
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}
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result, err := filepath.Abs(name)
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if err != nil {
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panic(err)
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}
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return result
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}
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// copyToFile copies the zip file to destination
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// if the zip file is a directory, a directory is created at the destination.
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func copyToFile(f *zip.File, dest string) (fileName string, err error) {
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rc, err := f.Open()
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if err != nil {
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return fileName, err
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}
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defer rc.Close()
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// Store filename/path for returning and using later on
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fileName = filepath.Join(dest, f.Name)
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if f.FileInfo().IsDir() {
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// Make Folder
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return fileName, os.MkdirAll(fileName, ModeDir)
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}
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// Make File
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var fdir string
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if lastIndex := strings.LastIndex(fileName, string(os.PathSeparator)); lastIndex > -1 {
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fdir = fileName[:lastIndex]
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}
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err = os.MkdirAll(fdir, ModeDir)
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if err != nil {
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return fileName, err
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}
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fd, err := os.OpenFile(fileName, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, f.Mode())
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if err != nil {
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return fileName, err
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}
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defer fd.Close()
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_, err = io.Copy(fd, rc)
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if err != nil {
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return fileName, err
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}
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return fileName, nil
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}
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// Download downloads a file from a URL.
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func Download(filepath string, url string) error {
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os.MkdirAll("/tmp/photoprism", ModeDir)
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// Create the file
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out, err := os.Create(filepath)
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if err != nil {
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return err
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}
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defer out.Close()
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// Get the data
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resp, err := http.Get(url)
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if err != nil {
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return err
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}
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defer resp.Body.Close()
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// Check server response
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if resp.StatusCode != http.StatusOK {
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return fmt.Errorf("bad status: %s", resp.Status)
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}
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// Writer the body to file
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_, err = io.Copy(out, resp.Body)
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if err != nil {
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return err
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}
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return nil
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}
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// DirIsEmpty returns true if a directory is empty.
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func DirIsEmpty(path string) bool {
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f, err := os.Open(path)
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if err != nil {
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return false
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}
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defer f.Close()
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_, err = f.Readdirnames(1)
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if err == io.EOF {
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return true
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}
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return false
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}
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