97 lines
2.6 KiB
Go
97 lines
2.6 KiB
Go
/*
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* Copyright (c) 2015 Alex Yatskov <alex@foosoft.net>
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* Author: Alex Yatskov <alex@foosoft.net>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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* the Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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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, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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package main
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import (
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"fmt"
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"log"
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"os"
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"path"
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)
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type link struct {
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Dst string
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Src string
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}
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func preparePath(loc string, flags int) error {
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clobber := flags&optClobber == optClobber
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force := flags&optForce == optForce
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verbose := flags&optVerbose == optVerbose
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if force {
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parentDir, _ := path.Split(loc)
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if _, err := os.Stat(parentDir); os.IsNotExist(err) {
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if verbose {
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log.Printf("Force creating path: '%s'", parentDir)
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}
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if err := os.MkdirAll(parentDir, 0777); err != nil {
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return err
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}
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}
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}
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if info, _ := os.Lstat(loc); info != nil {
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if info.Mode()&os.ModeSymlink == os.ModeSymlink {
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if verbose {
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log.Printf("Removing symlink: '%s'", loc)
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}
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if err := os.Remove(loc); err != nil {
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return err
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}
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} else if clobber {
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if verbose {
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log.Print("Clobbering path: '%s'", loc)
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}
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if err := os.RemoveAll(loc); err != nil {
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return err
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}
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}
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}
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return nil
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}
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func (this link) install(srcDir, dstDir string, flags int) error {
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if len(this.Dst) == 0 {
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this.Dst = this.Src
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}
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srcPath := path.Join(srcDir, this.Src)
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dstPath := path.Join(dstDir, this.Dst)
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if _, err := os.Stat(srcPath); os.IsNotExist(err) {
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return fmt.Errorf("Source path does not exist in filesystem: '%s'", srcPath)
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}
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if err := preparePath(dstPath, flags); err != nil {
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return err
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}
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if flags&optVerbose == optVerbose {
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log.Printf("Linking: '%s' => '%s'", srcPath, dstPath)
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}
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return os.Symlink(srcPath, dstPath)
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}
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