1// Copyright 2018 The Wuffs Authors. 2// 3// Licensed under the Apache License, Version 2.0 (the "License"); 4// you may not use this file except in compliance with the License. 5// You may obtain a copy of the License at 6// 7// https://www.apache.org/licenses/LICENSE-2.0 8// 9// Unless required by applicable law or agreed to in writing, software 10// distributed under the License is distributed on an "AS IS" BASIS, 11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12// See the License for the specific language governing permissions and 13// limitations under the License. 14 15package main 16 17import ( 18 "bytes" 19 "fmt" 20 "os" 21 "os/exec" 22 "path/filepath" 23 24 cf "github.com/google/wuffs/cmd/commonflags" 25) 26 27func genrelease(wuffsRoot string, langs []string, v cf.Version) error { 28 revision := runGitCommand(wuffsRoot, "rev-parse", "HEAD") 29 commitDate := runGitCommand(wuffsRoot, "show", 30 "--quiet", "--date=format-local:%Y-%m-%d", "--format=%cd") 31 gitRevListCount := runGitCommand(wuffsRoot, "rev-list", "--count", "HEAD") 32 for _, lang := range langs { 33 filename, contents, err := genreleaseLang(wuffsRoot, revision, commitDate, gitRevListCount, v, lang) 34 if err != nil { 35 return err 36 } 37 if err := writeFile(filename, contents); err != nil { 38 return err 39 } 40 } 41 return nil 42} 43 44func genreleaseLang(wuffsRoot string, revision string, commitDate, gitRevListCount string, v cf.Version, lang string) (filename string, contents []byte, err error) { 45 qualFilenames, err := findFiles(filepath.Join(wuffsRoot, "gen", lang), "."+lang) 46 if err != nil { 47 return "", nil, err 48 } 49 50 command := "wuffs-" + lang 51 args := []string(nil) 52 args = append(args, "genrelease", 53 "-revision", revision, 54 "-commitdate", commitDate, 55 "-version", v.String(), 56 ) 57 if gitRevListCount != "" { 58 args = append(args, "-gitrevlistcount", gitRevListCount) 59 } 60 args = append(args, qualFilenames...) 61 stdout := &bytes.Buffer{} 62 63 cmd := exec.Command(command, args...) 64 cmd.Stdout = stdout 65 cmd.Stderr = os.Stderr 66 if err := cmd.Run(); err == nil { 67 // No-op. 68 } else if _, ok := err.(*exec.ExitError); ok { 69 return "", nil, fmt.Errorf("%s: failed", command) 70 } else { 71 return "", nil, err 72 } 73 74 base := "wuffs-unsupported-snapshot" 75 if v.Major != 0 || v.Minor != 0 { 76 base = fmt.Sprintf("wuffs-v%d.%d", v.Major, v.Minor) 77 } 78 return filepath.Join(wuffsRoot, "release", lang, base+"."+lang), stdout.Bytes(), nil 79} 80 81func runGitCommand(wuffsRoot string, cmdArgs ...string) string { 82 cmd := exec.Command("git", cmdArgs...) 83 cmd.Dir = wuffsRoot 84 cmd.Env = []string{"TZ=UTC"} 85 out, err := cmd.Output() 86 if err != nil { 87 return "" 88 } 89 return string(bytes.TrimSpace(out)) 90} 91