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