159 lines
2.8 KiB
Go
159 lines
2.8 KiB
Go
package util
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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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)
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// Returns true if file exists
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func Exists(filename string) bool {
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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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// Returns full path; ~ replaced with actual home directory
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func ExpandedFilename(filename string) string {
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if filename == "" {
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return ""
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}
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if len(filename) > 2 && filename[:2] == "~/" {
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if usr, err := user.Current(); err == nil {
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filename = filepath.Join(usr.HomeDir, filename[2:])
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}
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}
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result, err := filepath.Abs(filename)
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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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// Extract Zip file in destination directory
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func Unzip(src, dest string) (fileNames []string, err error) {
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r, err := zip.OpenReader(src)
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if err != nil {
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return fileNames, err
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}
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defer r.Close()
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for _, f := range r.File {
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// Skip directories like __OSX
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if strings.HasPrefix(f.Name, "__") {
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continue
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}
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fn, err := copyToFile(f, dest)
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if err != nil {
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return fileNames, err
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}
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fileNames = append(fileNames, fn)
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}
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return fileNames, nil
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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, os.ModePerm)
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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, os.ModePerm)
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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 a file from a URL
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func Download(filepath string, url string) error {
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os.MkdirAll("/tmp/photoprism", os.ModePerm)
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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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func DirectoryIsEmpty(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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