/
main.go
65 lines (57 loc) · 1.41 KB
/
main.go
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// Copyright 2018 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import (
"bufio"
"fmt"
"log"
"os"
"strings"
)
func main() {
if len(os.Args) < 2 {
log.Fatalf("Usage: `print_changes ${VERSION}`")
}
version := os.Args[1]
file, err := os.Open("CHANGELOG.md")
if err != nil {
log.Fatalf("Failed to open CHANGELOG.md: %+v", err)
}
defer file.Close()
reader := bufio.NewReader(file)
var line string
versionFound := false
changes := []string{}
for {
line, err = reader.ReadString('\n')
if err != nil {
break
}
line = strings.TrimSpace(line)
if strings.Contains(line, version) {
versionFound = true
continue
}
if versionFound && strings.HasPrefix(line, "#") {
break
}
if versionFound && line != "" {
changes = append(changes, line)
}
}
if !versionFound {
log.Fatalf("Could not find version: %s", version)
}
fmt.Print(strings.Join(changes, "\n"))
}