From e7a2a65eb6431eb732aa66846f132eedc0541ebb Mon Sep 17 00:00:00 2001
From: Timon Ringwald <timon.ringwald@mequen.de>
Date: Mon, 29 Aug 2022 13:45:28 +0200
Subject: [PATCH] show version

---
 go.mod  | 6 +++++-
 go.sum  | 2 ++
 main.go | 9 +++++++++
 3 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/go.mod b/go.mod
index 21eec85..c638663 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,11 @@ module git.milar.in/milarin/format
 go 1.18
 
 require (
-	github.com/fatih/color v1.13.0 // indirect
+	git.milar.in/milarin/buildinfo v1.0.0
+	github.com/fatih/color v1.13.0
+)
+
+require (
 	github.com/mattn/go-colorable v0.1.12 // indirect
 	github.com/mattn/go-isatty v0.0.14 // indirect
 	golang.org/x/sys v0.0.0-20220517195934-5e4e11fc645e // indirect
diff --git a/go.sum b/go.sum
index c970384..f6049c5 100644
--- a/go.sum
+++ b/go.sum
@@ -1,3 +1,5 @@
+git.milar.in/milarin/buildinfo v1.0.0 h1:tw98GupUYl/0a/3aPGuezhE4wseycOSsbcLp70hy60U=
+git.milar.in/milarin/buildinfo v1.0.0/go.mod h1:arI9ZoENOgcZcanv25k9y4dKDUhPp0buJrlVerGruas=
 github.com/fatih/color v1.13.0 h1:8LOYc1KYPPmyKMuN8QV2DNRWNbLo6LZ0iLs8+mlH53w=
 github.com/fatih/color v1.13.0/go.mod h1:kLAiJbzzSOZDVNGyDpeOxJ47H46qBXwg5ILebYFFOfk=
 github.com/mattn/go-colorable v0.1.9/go.mod h1:u6P/XSegPjTcexA+o6vUJrdnUu04hMope9wVRipJSqc=
diff --git a/main.go b/main.go
index 1d51fed..1494bcc 100644
--- a/main.go
+++ b/main.go
@@ -10,6 +10,8 @@ import (
 	"strconv"
 	"strings"
 	"unicode/utf8"
+
+	"git.milar.in/milarin/buildinfo"
 )
 
 var (
@@ -45,6 +47,8 @@ var (
 	// it may be useful to have a boolean flag for this behavior
 	lineParseAmount = flag.Int("n", 1, "amount of lines to feed into input pattern")
 
+	showVersion = flag.Bool("v", false, "show version and exit")
+
 	replacePattern     = regexp.MustCompile(`\{(\d+)(?::(.*?))?(?::(.*?))?(?::(.*?))?\}`)
 	numMutationPattern = regexp.MustCompile(`([+\-*/])(\d+|\((\d+)\))`)
 )
@@ -52,6 +56,11 @@ var (
 func main() {
 	flag.Parse()
 
+	if *showVersion {
+		buildinfo.Print(buildinfo.Options{})
+		return
+	}
+
 	pattern, err := regexp.Compile(*input)
 	if err != nil {
 		panic(err)