// Copyright (c) 2018, Google Inc.
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice appear in all copies.
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//
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// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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// SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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// OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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// CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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// check_filenames.go checks that filenames are unique. Some of our consumers do
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// not support multiple files with the same name in the same build target, even
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// if they are in different directories.
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package main
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import (
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"fmt"
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"os"
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"path/filepath"
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"strings"
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)
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func isSourceFile(in string) bool {
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return strings.HasSuffix(in, ".c") || strings.HasSuffix(in, ".cc")
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}
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func main() {
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var roots = []string{
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"crypto",
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filepath.Join("third_party", "fiat"),
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"ssl",
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}
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names := make(map[string]string)
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var foundCollisions bool
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for _, root := range roots {
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err := filepath.Walk(root, func(path string, info os.FileInfo, err error) error {
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if err != nil {
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return err
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}
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if info.IsDir() {
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return nil
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}
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name := strings.ToLower(info.Name()) // Windows and macOS are case-insensitive.
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if isSourceFile(name) {
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if oldPath, ok := names[name]; ok {
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fmt.Printf("Filename collision found: %s and %s\n", path, oldPath)
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foundCollisions = true
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} else {
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names[name] = path
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}
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}
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return nil
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})
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if err != nil {
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fmt.Printf("Error traversing %s: %s\n", root, err)
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os.Exit(1)
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}
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}
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if foundCollisions {
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os.Exit(1)
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}
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}
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