100 lines
2.6 KiB
Go
100 lines
2.6 KiB
Go
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package goutil
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/*
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Copied from https://github.com/otiai10/copy and slightly altered.
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The MIT License (MIT)
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Copyright (c) 2018 otiai10
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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import (
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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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// Copy copies src to dest, doesn't matter if src is a directory or a file
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func Copy(src, dest string) error {
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info, err := os.Lstat(src)
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if err != nil {
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return err
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}
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return copy(src, dest, info)
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}
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func copy(src, dest string, info os.FileInfo) error {
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if info.Mode()&os.ModeSymlink != 0 {
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return linkcopy(src, dest, info)
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}
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if info.IsDir() {
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return dircopy(src, dest, info)
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}
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return filecopy(src, dest, info)
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}
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func filecopy(src, dest string, info os.FileInfo) error {
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if err := os.MkdirAll(filepath.Dir(dest), os.ModePerm); err != nil {
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return err
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}
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f, err := os.Create(dest)
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if err != nil {
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return err
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}
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defer f.Close()
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if err = os.Chmod(f.Name(), info.Mode()); err != nil {
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return err
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}
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s, err := os.Open(src)
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if err != nil {
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return err
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}
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defer s.Close()
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_, err = io.Copy(f, s)
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return err
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}
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func dircopy(srcdir, destdir string, info os.FileInfo) error {
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if err := os.MkdirAll(destdir, info.Mode()); err != nil {
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return err
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}
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contents, err := ioutil.ReadDir(srcdir)
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if err != nil {
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return err
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}
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for _, content := range contents {
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cs, cd := filepath.Join(srcdir, content.Name()), filepath.Join(destdir, content.Name())
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if err := copy(cs, cd, content); err != nil {
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return err
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}
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}
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return nil
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}
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func linkcopy(src, dest string, info os.FileInfo) error {
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src, err := os.Readlink(src)
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if err != nil {
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return err
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}
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return os.Symlink(src, dest)
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}
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