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154 lines
3.0 KiB
154 lines
3.0 KiB
package utils
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import (
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"fmt"
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"github.com/fatih/color"
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"github.com/mitchellh/go-homedir"
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"io"
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"io/ioutil"
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"os"
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"path/filepath"
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)
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func ExpandPath(filePath string) (string, error) {
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filePath, err := homedir.Expand(filePath)
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if err != nil {
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return "", err
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}
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filePath, err = filepath.Abs(filePath)
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if err != nil {
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return "", err
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}
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return filePath, nil
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}
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func FileWrite(filePath string, content string, perm os.FileMode, dryRun bool) error {
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filePath, err := ExpandPath(filePath)
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if err != nil {
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return err
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}
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if dryRun {
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fmt.Printf("%v %v %v:\n",
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color.GreenString("[DRYRUN]"),
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"Would have written content to",
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color.GreenString(filePath),
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)
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color.Green(content)
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} else {
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d1 := []byte(content)
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err = ioutil.WriteFile(filePath, d1, perm)
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}
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return err
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}
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func FileExists(filePath string) bool {
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filePath, err := ExpandPath(filePath)
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if err != nil {
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return false
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}
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if _, err := os.Stat(filePath); err != nil {
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return !os.IsNotExist(err)
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}
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return true
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}
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func FileDelete(filePath string) error {
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filePath, err := ExpandPath(filePath)
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if err != nil {
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return err
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}
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return os.Remove(filePath)
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}
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// CopyFile copies the contents of the file named src to the file named
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// by dst. The file will be created if it does not already exist. If the
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// destination file exists, all it's contents will be replaced by the contents
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// of the source file. The file mode will be copied from the source and
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// the copied data is synced/flushed to stable storage.
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func CopyFile(src, dst string) (err error) {
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in, err := os.Open(src)
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if err != nil {
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return
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}
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defer in.Close()
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out, err := os.Create(dst)
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if err != nil {
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return
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}
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defer func() {
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if e := out.Close(); e != nil {
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err = e
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}
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}()
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_, err = io.Copy(out, in)
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if err != nil {
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return
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}
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err = out.Sync()
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if err != nil {
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return
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}
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si, err := os.Stat(src)
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if err != nil {
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return
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}
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err = os.Chmod(dst, si.Mode())
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if err != nil {
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return
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}
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return
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}
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// CopyDir recursively copies a directory tree, attempting to preserve permissions.
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// Source directory must exist, destination directory must *not* exist.
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// Symlinks are ignored and skipped.
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func CopyDir(src string, dst string) (err error) {
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src = filepath.Clean(src)
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dst = filepath.Clean(dst)
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si, err := os.Stat(src)
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if err != nil {
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return err
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}
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if !si.IsDir() {
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return fmt.Errorf("source is not a directory")
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}
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_, err = os.Stat(dst)
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if err != nil && !os.IsNotExist(err) {
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return
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}
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if err == nil {
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return fmt.Errorf("destination already exists")
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}
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err = os.MkdirAll(dst, si.Mode())
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if err != nil {
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return
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}
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entries, err := ioutil.ReadDir(src)
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if err != nil {
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return
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}
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for _, entry := range entries {
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srcPath := filepath.Join(src, entry.Name())
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dstPath := filepath.Join(dst, entry.Name())
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if entry.IsDir() {
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err = CopyDir(srcPath, dstPath)
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if err != nil {
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return
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}
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} else {
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// Skip symlinks.
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if entry.Mode()&os.ModeSymlink != 0 {
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continue
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}
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err = CopyFile(srcPath, dstPath)
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if err != nil {
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return
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}
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}
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}
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return
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}
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