Add a `--help` flag

1 files changed, 7 insertions, 0 deletions

diff --git a/src/main.rs b/src/main.rs
index 8f246b3..12d5725 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -28,6 +28,7 @@ fn print_usage() {
     println!(r#"usage: pdf-urls [<options>] FILE
 
 Options:
+    -h, --help          print this help menu
     -v, --version       print the program version"#);
 }
 
@@ -40,6 +41,12 @@ fn main() {
         process::exit(exitcode::USAGE);
     }
 
+    if args[1] == "-h" || args[1] == "--help" {
+        print_usage();
+
+        process::exit(exitcode::OK);
+    }
+
     if args[1] == "-v" || args[1] == "--version" {
         println!("{}", VERSION);