mirror of
https://github.com/syncthing/syncthing.git
synced 2024-11-17 02:48:57 -07:00
43 lines
1.3 KiB
Go
43 lines
1.3 KiB
Go
// Copyright (C) 2014 The Syncthing Authors.
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//
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// This program is free software: you can redistribute it and/or modify it
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// under the terms of the GNU General Public License as published by the Free
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// Software Foundation, either version 3 of the License, or (at your option)
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// any later version.
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//
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// This program is distributed in the hope that it will be useful, but WITHOUT
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// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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// more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with this program. If not, see <http://www.gnu.org/licenses/>.
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package versioner
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import (
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"path/filepath"
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"regexp"
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)
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// Inserts ~tag just before the extension of the filename.
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func taggedFilename(name, tag string) string {
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dir, file := filepath.Dir(name), filepath.Base(name)
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ext := filepath.Ext(file)
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withoutExt := file[:len(file)-len(ext)]
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return filepath.Join(dir, withoutExt+"~"+tag+ext)
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}
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var tagExp = regexp.MustCompile(`~([^~.]+)(?:\.[^.]+)?$`)
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// Returns the tag from a filename, whether at the end or middle.
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func filenameTag(path string) string {
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match := tagExp.FindStringSubmatch(path)
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// match is []string{"whole match", "submatch"} when successfull
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if len(match) != 2 {
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return ""
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}
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return match[1]
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}
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