77 lines
1.4 KiB
Go
77 lines
1.4 KiB
Go
// Package dirs provides functions to sanitize directory and file names.
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package dirs
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import (
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"os"
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"path/filepath"
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"strings"
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)
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const (
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sep = string(os.PathSeparator)
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space = " "
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spacep = "%20"
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newline = "\n"
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newlinep = "%0A"
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)
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var (
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home = os.Getenv("HOME")
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pwd, _ = os.Getwd()
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)
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// UnExpand returns dir after expanding some directory shortcuts
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//
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// $HOME -> ~
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//
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// $PWD -> .
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//
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// workdir -> /
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func UnExpand(dir, workdir string) (outdir string) {
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if dir != "" {
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outdir = cleanDir(dir, pwd)
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}
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if workdir != "" {
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workdir = cleanDir(workdir, pwd)
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outdir = strings.Replace(outdir, workdir, "", 1)
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} else if home != pwd && pwd != "" {
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outdir = strings.Replace(outdir, pwd, ".", 1)
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}
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outdir = strings.Replace(outdir, home, "~", 1)
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outdir = PercentDecode(outdir)
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if outdir == "" {
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outdir = "/"
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}
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return
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}
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func PercentDecode(input string) (output string) {
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output = strings.ReplaceAll(input, spacep, space)
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output = strings.ReplaceAll(output, newlinep, newline)
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return
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}
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func PercentEncode(input string) (output string) {
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output = strings.ReplaceAll(input, space, spacep)
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output = strings.ReplaceAll(output, newline, newlinep)
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return
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}
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func cleanDir(dir, pwd string) (out string) {
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if strings.HasPrefix(dir, ".") {
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out = filepath.Clean(dir)
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} else if !strings.HasPrefix(dir, sep) {
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out = filepath.Join(pwd, dir)
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} else {
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out = dir
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}
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return
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}
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