From 55af07b4d47ec46e948c1578b3fcdeb45521fbc0 Mon Sep 17 00:00:00 2001
From: Hatter Jiang <jht5945@gmail.com>
Date: Sun, 12 Jul 2020 00:42:34 +0800
Subject: [PATCH] feat: add usage for commit-msg

---
 scripts/commit-msg.crs | 32 ++++++++++++++++++++------------
 1 file changed, 20 insertions(+), 12 deletions(-)

diff --git a/scripts/commit-msg.crs b/scripts/commit-msg.crs
index f6b52d4..4e01af2 100755
--- a/scripts/commit-msg.crs
+++ b/scripts/commit-msg.crs
@@ -9,6 +9,10 @@ fn main() {
         exit_with_error_message("Commit message is EMPTY!");
     });
 
+    if arg1 == "usage" || arg1 == "USAGE" {
+        print_usage(); return;
+    }
+
     let is_install = arg1 == "install" || arg1 == "INSTALL";
     let is_force_install = arg1 == "forceinstall" || arg1 == "FORCEINSTALL"
                         || arg1 == "force-install" || arg1 == "FORCE-INSTALL"
@@ -28,9 +32,21 @@ fn main() {
     if is_commit_message_matches {
         print_ok("Commit message rule matches");
     } else {
-        print_info(&format!(r#"Please follow the commit spec:
-Format: <type>(<scope>): <subject>
-<scope> is optional
+        print_usage();
+        exit_with_error_message("Commit message rule is NOT matched");
+    }
+}
+
+const RED: &str   = "\x1B[91m";
+const GREEN: &str = "\x1B[92m";
+const BOLD: &str  = "\x1B[1m";
+const UNDER: &str = "\x1B[4m";
+const END: &str   = "\x1B[0m";
+
+fn print_usage() {
+    print_info(&format!(r#"Please follow the commit spec:
+Format: {}<type>{}(<scope>){}: <subject>{}
+               <scope> is optional
 
 feat: add hat wobble
 ^--^  ^------------^
@@ -49,17 +65,9 @@ chore    : updating grunt tasks etc; no production code change
 
 Reference: {}https://gist.github.com/joshbuchea/6f47e86d2510bce28f8e7f42ae84c716{}
 or mirror: {}https://hatter.ink/wiki/view_raw.action?__access_token=PUBLIC&id=42{}
-"#, UNDER, END, UNDER, END));
-        exit_with_error_message("Commit message rule is NOT matched");
-    }
+"#, BOLD, END, BOLD, END, UNDER, END, UNDER, END));
 }
 
-const RED: &str   = "\x1B[91m";
-const GREEN: &str = "\x1B[92m";
-const BOLD: &str  = "\x1B[1m";
-const UNDER: &str = "\x1B[4m";
-const END: &str   = "\x1B[0m";
-
 fn install_commit_msg(force: bool) {
     let home_path = PathBuf::from(env::var("HOME").unwrap_or_else(|e| {
         exit_with_error_message(&format!("Get env HOME failed: {}!", e));