feat: show versions

.goreleaser.yml

@@ -19,7 +19,7 @@ builds:
   - linux
   id: pominal-build
   ldflags:
-  - s -w -X main.version={{.Version}} -X main.commit={{.ShortCommit}} -X main.date={{.Date}} -X main.goversion={{.Env.GOVERSION}}
+  - "-s -w -X main.version={{ .Version }} -X main.commit={{ .ShortCommit }} -X main.date={{ .Date }} -X main.goversion={{ .Env.GOVERSION }}"
 
 archives:
 - files:

main.go

@@ -40,6 +40,7 @@ var (
 	shortBreakTimer string
 	longBreakTimer  string
 	maxWorkCycles   int
+	printVersion    bool
 )
 
 func init() {
@@ -47,6 +48,7 @@ func init() {
 	flag.StringVar(&shortBreakTimer, "short-break-timer", "5m", "sets the timer for your short break.")
 	flag.StringVar(&longBreakTimer, "long-break-timer", "20m", "sets the timer for your long break.")
 	flag.IntVar(&maxWorkCycles, "max-work-cycles", 4, "sets the maximum number of work cycles to complete before taking a long break.")
+	flag.BoolVar(&printVersion, "version", false, "print version and exit.")
 	flag.Parse()
 }
 
@@ -63,6 +65,11 @@ type Pominal struct {
 
 func main() {
 
+	if printVersion {
+		Version()
+		os.Exit(0)
+	}
+
 	workTimeDuration, err := time.ParseDuration(workTimer)
 	if err != nil {
 		fmt.Printf("ERROR: Unable to set the work timer. %s", err.Error())

version.go

@@ -1,3 +1,21 @@
+/*
+  Pominal
+  Copyright (C) 2019  Daniel Anglin
+
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
 package main
 
 import "fmt"
@@ -10,5 +28,5 @@ var (
 )
 
 func Version() {
-	fmt.Printf("Version: %s\nCommit: %s\nGo Version: %s\nDate: %s", version, commit, goversion, date)
+	fmt.Printf("Pominal\n\nVersion: %s\nCommit: %s\nGo Version: %s\nDate: %s", version, commit, goversion, date)
 }