From 7e6eb82195c650bc34829e5cca2d2296e78c0707 Mon Sep 17 00:00:00 2001
From: Ophestra Umiker <cat@ophivana.moe>
Date: Tue, 16 Jul 2024 22:07:40 +0900
Subject: [PATCH] license: embed license in executable

Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
---
 cli.go     |  7 +++----
 flake.nix  |  2 +-
 license.go | 26 ++++++++++++++++++++++++++
 main.go    |  8 +++++++-
 4 files changed, 37 insertions(+), 6 deletions(-)
 create mode 100644 license.go

diff --git a/cli.go b/cli.go
index 9a4d3a0..ca1b41b 100644
--- a/cli.go
+++ b/cli.go
@@ -25,10 +25,9 @@ func init() {
 }
 
 func copyArgs() {
-	if printVersion {
-		fmt.Println(Version)
-		os.Exit(0)
-	}
+	tryLauncher()
+	tryVersion()
+	tryLicense()
 
 	command = flag.Args()
 
diff --git a/flake.nix b/flake.nix
index 48cb435..8c8e419 100644
--- a/flake.nix
+++ b/flake.nix
@@ -31,7 +31,7 @@
               packages = [
                 (buildGoModule rec {
                   pname = "ego";
-                  version = "flake";
+                  version = "0.0.0-flake";
 
                   src = ./.;
                   vendorHash = null; # we have no dependencies :3
diff --git a/license.go b/license.go
new file mode 100644
index 0000000..4cbe012
--- /dev/null
+++ b/license.go
@@ -0,0 +1,26 @@
+package main
+
+import (
+	_ "embed"
+	"flag"
+	"fmt"
+	"os"
+)
+
+var (
+	//go:embed LICENSE
+	license string
+
+	printLicense bool
+)
+
+func init() {
+	flag.BoolVar(&printLicense, "license", false, "Print license")
+}
+
+func tryLicense() {
+	if printLicense {
+		fmt.Println(license)
+		os.Exit(0)
+	}
+}
diff --git a/main.go b/main.go
index ed5566e..4a719d8 100644
--- a/main.go
+++ b/main.go
@@ -16,6 +16,13 @@ import (
 
 var Version = "impure"
 
+func tryVersion() {
+	if printVersion {
+		fmt.Println(Version)
+		os.Exit(0)
+	}
+}
+
 var (
 	ego     *user.User
 	uid     int
@@ -42,7 +49,6 @@ const (
 
 func main() {
 	flag.Parse()
-	tryLauncher()
 	copyArgs()
 
 	if u, err := strconv.Atoi(ego.Uid); err != nil {