7bf6f62130
regexp is overkill for a simple extension replacement, just find the last '.' and add the new extension after it. Saves 5% cpu time on one workload. Change-Id: Ic299c9ec5132d15bbea2c9c7778c000d6fdf509a
47 lines
1.4 KiB
Go
47 lines
1.4 KiB
Go
// Copyright 2014 Google Inc. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package pathtools
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import (
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"path/filepath"
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"strings"
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)
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// PrefixPaths returns a list of paths consisting of prefix joined with each
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// element of paths. The resulting paths are "clean" in the filepath.Clean
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// sense.
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func PrefixPaths(paths []string, prefix string) []string {
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result := make([]string, len(paths))
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for i, path := range paths {
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result[i] = filepath.Join(prefix, path)
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}
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return result
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}
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func ReplaceExtensions(paths []string, extension string) []string {
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result := make([]string, len(paths))
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for i, path := range paths {
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result[i] = ReplaceExtension(path, extension)
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}
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return result
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}
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func ReplaceExtension(path string, extension string) string {
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dot := strings.LastIndex(path, ".")
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if dot == -1 {
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return path
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}
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return path[:dot+1] + extension
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}
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