blob: 48aa18d7a5269bbc29aaf675d775c3ffdac3a631 [file] [log] [blame]
// Copyright 2021 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
package common
import (
"fmt"
"regexp"
"strconv"
"strings"
"time"
)
var re = regexp.MustCompile(`• Copyright (\d+) The`)
const header = `• Copyright %v The Dawn & Tint Authors
• Redistribution and use in source and binary forms, with or without
• modification, are permitted provided that the following conditions are met:
• 1. Redistributions of source code must retain the above copyright notice, this
• list of conditions and the following disclaimer.
• 2. Redistributions in binary form must reproduce the above copyright notice,
• this list of conditions and the following disclaimer in the documentation
• and/or other materials provided with the distribution.
• 3. Neither the name of the copyright holder nor the names of its
• contributors may be used to endorse or promote products derived from
• this software without specific prior written permission.
• THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
• AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
• IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
• DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
• FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
• DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
• SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
• CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
• OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
• OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
• File generated by 'tools/src/cmd/gen' using the template:
• %v
• To regenerate run: './tools/run gen'
• Do not modify this file directly
`
func Header(existing, templatePath, comment string) string {
copyrightYear := time.Now().Year()
// Replace comment characters with '•'
existing = strings.ReplaceAll(existing, comment, "•")
// Look for the existing copyright year
if match := re.FindStringSubmatch(string(existing)); len(match) == 2 {
if year, err := strconv.Atoi(match[1]); err == nil {
copyrightYear = year
}
}
// Replace '•' with comment characters, '‣' with a line of comment characters
out := strings.ReplaceAll(header, "•", comment)
out = strings.ReplaceAll(out, "‣", strings.Repeat(comment, 80/len(comment)))
return fmt.Sprintf(out, copyrightYear, templatePath)
}