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|
package planr
import (
"fmt"
"os"
"path/filepath"
"io"
)
func Exists(filePath string) bool {
if _, err := os.Stat(filePath); os.IsNotExist(err) {
return false
}
return true
}
func CreateIfNotExists(dir string, perm os.FileMode) error {
if Exists(dir) {
return nil
}
if err := os.MkdirAll(dir, perm); err != nil {
return fmt.Errorf("failed to create directory: '%s', error: '%s'", dir, err.Error())
}
return nil
}
func CopySymlink(src, dst string, perm os.FileMode) error {
link, err := os.Readlink(src)
if err != nil {
return err
}
if err := os.Chmod(src, perm); err != nil {
return err
}
return os.Symlink(link, dst)
}
func Copy(srcFile, dstFile string, perm os.FileMode) error {
src, err := os.Open(srcFile)
if err != nil {
return err
}
defer src.Close()
dst, err := os.OpenFile(dstFile, os.O_CREATE | os.O_WRONLY | os.O_TRUNC, perm)
if err != nil {
return err
}
defer dst.Close()
_, err = io.Copy(dst, src)
if err != nil {
return err
}
return nil
}
func RecursiveCopyDir(source, destination string) error {
err := filepath.Walk(source, func(path string, info os.FileInfo, err error) error {
relPath, err := filepath.Rel(source, path)
if err != nil {
return err
}
dst := filepath.Join(destination, relPath)
src := filepath.Join(source, relPath)
mode := info.Mode()
if relPath == "" {
return nil
}
switch info.Mode() & os.ModeType {
case os.ModeDir:
return CreateIfNotExists(dst, mode)
case os.ModeSymlink:
return CopySymlink(src, dst, mode)
default:
return Copy(src, dst, mode)
}
});
return err
}
|
