MINOR: add version info to binary

Author: oktalz

check.go

@@ -9,15 +9,12 @@ import (
 	"io"
 	"log"
 	"os"
-	"path"
 	"regexp"
 	"strconv"
 	"strings"
 	"unicode"
 	"unicode/utf8"
 
-	"github.com/haproxytech/check-commit/v5/aspell"
-
 	"github.com/google/go-github/v56/github"
 
 	"github.com/xanzy/go-gitlab"
@@ -542,52 +539,3 @@ func (c CommitPolicyConfig) CheckSubjectList(subjects []string) error {
 }
 
 const requiredCmdlineArgs = 2
-
-func main() {
-	log.SetFlags(log.LstdFlags | log.Lshortfile)
-	var repoPath string
-
-	if len(os.Args) < requiredCmdlineArgs {
-		repoPath = "."
-	} else {
-		repoPath = os.Args[1]
-	}
-
-	aspellCheck, err := aspell.New(path.Join(repoPath, ".aspell.yml"))
-	if err != nil {
-		log.Fatalf("error reading aspell exceptions: %s", err)
-	}
-
-	commitPolicy, err := LoadCommitPolicy(path.Join(repoPath, ".check-commit.yml"))
-	if err != nil {
-		log.Fatalf("error reading configuration: %s", err)
-	}
-
-	if commitPolicy.IsEmpty() {
-		log.Printf("WARNING: using empty configuration (i.e. no verification)")
-	}
-
-	gitEnv, err := readGitEnvironment()
-	if err != nil {
-		log.Fatalf("couldn't auto-detect running environment, please set GITHUB_REF and GITHUB_BASE_REF manually: %s", err)
-	}
-
-	subjects, messages, content, err := getCommitData(gitEnv)
-	if err != nil {
-		log.Fatalf("error getting commit data: %s", err)
-	}
-
-	if err := commitPolicy.CheckSubjectList(subjects); err != nil {
-		log.Printf("encountered one or more commit message errors\n")
-		log.Fatalf("%s\n", commitPolicy.HelpText)
-	}
-
-	err = aspellCheck.Check(subjects, messages, content)
-	if err != nil {
-		log.Printf("encountered one or more commit message spelling errors\n")
-		// log.Fatalf("%s\n", err)
-		log.Fatalf("%s\n", aspellCheck.HelpText)
-	}
-
-	log.Printf("check completed without errors\n")
-}

main.go

@@ -0,0 +1,78 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"path"
+
+	"github.com/haproxytech/check-commit/v5/aspell"
+	"github.com/haproxytech/check-commit/v5/version"
+)
+
+func main() {
+	err := version.Set()
+	if err != nil {
+		log.Fatal(err)
+	}
+	if len(os.Args) == 2 {
+		for _, arg := range os.Args[1:] {
+			if arg == "version" {
+				fmt.Println("check-commit", version.Version)
+				fmt.Println("built from:", version.Repo)
+				fmt.Println("commit date:", version.CommitDate)
+				os.Exit(0)
+			}
+			if arg == "tag" {
+				fmt.Println(version.Tag)
+				os.Exit(0)
+			}
+		}
+	}
+	log.SetFlags(log.LstdFlags | log.Lshortfile)
+	var repoPath string
+
+	if len(os.Args) < requiredCmdlineArgs {
+		repoPath = "."
+	} else {
+		repoPath = os.Args[1]
+	}
+
+	aspellCheck, err := aspell.New(path.Join(repoPath, ".aspell.yml"))
+	if err != nil {
+		log.Fatalf("error reading aspell exceptions: %s", err)
+	}
+
+	commitPolicy, err := LoadCommitPolicy(path.Join(repoPath, ".check-commit.yml"))
+	if err != nil {
+		log.Fatalf("error reading configuration: %s", err)
+	}
+
+	if commitPolicy.IsEmpty() {
+		log.Printf("WARNING: using empty configuration (i.e. no verification)")
+	}
+
+	gitEnv, err := readGitEnvironment()
+	if err != nil {
+		log.Fatalf("couldn't auto-detect running environment, please set GITHUB_REF and GITHUB_BASE_REF manually: %s", err)
+	}
+
+	subjects, messages, content, err := getCommitData(gitEnv)
+	if err != nil {
+		log.Fatalf("error getting commit data: %s", err)
+	}
+
+	if err := commitPolicy.CheckSubjectList(subjects); err != nil {
+		log.Printf("encountered one or more commit message errors\n")
+		log.Fatalf("%s\n", commitPolicy.HelpText)
+	}
+
+	err = aspellCheck.Check(subjects, messages, content)
+	if err != nil {
+		log.Printf("encountered one or more commit message spelling errors\n")
+		// log.Fatalf("%s\n", err)
+		log.Fatalf("%s\n", aspellCheck.HelpText)
+	}
+
+	log.Printf("check completed without errors\n")
+}

version/runtime.go

@@ -0,0 +1,64 @@
+// Copyright 2019 HAProxy Technologies 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
+//
+//    http://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 version
+
+import (
+	"errors"
+	"runtime/debug"
+	"strings"
+)
+
+var (
+	Repo       = ""
+	Version    = "dev"
+	Tag        = "dev"
+	CommitDate = ""
+)
+
+var ErrBuildDataNotReadable = errors.New("not able to read build data")
+
+func Set() error {
+	buildinfo, ok := debug.ReadBuildInfo()
+	if !ok {
+		return ErrBuildDataNotReadable
+	}
+	Repo = buildinfo.Main.Path
+	CommitDate = get(buildinfo, "vcs.time")
+	commit := get(buildinfo, "vcs.revision")
+	if len(commit) > 8 {
+		commit = commit[:8]
+	}
+	if commit == "" {
+		commit = "unknown"
+	}
+
+	var dirty string
+	if get(buildinfo, "vcs.modified") == "true" {
+		dirty = ".dirty"
+	}
+	Version = strings.Replace(buildinfo.Main.Version, "(devel)", "dev", 1) + "." + commit + dirty
+	Tag = strings.Replace(buildinfo.Main.Version, "(devel)", "dev", 1)
+
+	return nil
+}
+
+func get(buildInfo *debug.BuildInfo, key string) string {
+	for _, setting := range buildInfo.Settings {
+		if setting.Key == key {
+			return setting.Value
+		}
+	}
+	return ""
+}