51 lines
1.1 KiB
Go
51 lines
1.1 KiB
Go
package clean
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import (
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"path"
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"strings"
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"unicode"
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)
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// Path removes invalid character from a path string.
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func Path(s string) string {
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if s == "" || reject(s, 512) || strings.Contains(s, "..") || strings.Contains(s, "//") {
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return ""
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}
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// Trim whitespace.
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s = strings.TrimSpace(s)
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// Remove non-printable and other potentially problematic characters.
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// The following characters must never be used in a filepath: \ > < | : &
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s = strings.Map(func(r rune) rune {
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if !unicode.IsPrint(r) {
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return -1
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}
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switch r {
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case '\\', '|', '"', '?', '*', '%', '<', '>', '{', '}':
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return -1
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default:
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return r
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}
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}, s)
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return s
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}
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// UserPath sanitizes and normalizes a user provided path, so it can be used.
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func UserPath(dir string) string {
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if dir == "" {
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return dir
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}
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// The following characters must never be used in a filepath: \ > < | : &
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dir = strings.Trim(path.Clean(Path(strings.ReplaceAll(dir, "\\", "/"))), " ~./\\|?*%<>")
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if strings.Contains(dir, "/.") || strings.Contains(dir, "..") || strings.Contains(dir, "//") {
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return ""
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}
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return dir
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}
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