diff options
Diffstat (limited to 'squash')
| -rw-r--r-- | squash/src/cli.rs | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/squash/src/cli.rs b/squash/src/cli.rs index 80b3371..2e9251f 100644 --- a/squash/src/cli.rs +++ b/squash/src/cli.rs @@ -2,6 +2,10 @@ use std::cmp::Ordering; use camino::Utf8PathBuf; +const NAME: &str = env!("CARGO_PKG_NAME"); +const VERSION: &str = env!("CARGO_PKG_VERSION"); +const AUTHORS: &str = env!("CARGO_PKG_AUTHORS"); + pub struct Cli { pub color_count: u8, pub tolerance: Option<f32>, @@ -120,9 +124,8 @@ pub fn build() -> Cli { building.tolerance = Some(tol); } }, - Some(("help", _)) => { - print_help(); - } + Some(("help", _)) => print_help(), + Some(("version", _)) => print_version(), Some((key, _)) => { eprintln!("unrecognised key {key}"); std::process::exit(1); @@ -144,7 +147,7 @@ pub fn build() -> Cli { } fn print_help() -> ! { - println!("usage: squash [arguments ...] <input> <output>\n"); + println!("usage: {NAME} [arguments ...] <input> <output>\n"); println!("<input> path to a jpeg or png file"); println!("<output> path to write a png or gif file to\n"); println!("ARGUMENTS:"); @@ -155,15 +158,14 @@ fn print_help() -> ! { println!(" how different colours should be to be added to the palette"); println!(" a number > 0 and <= 100\n"); println!(" help= | -h | --help"); - println!(" print this message and exit"); + println!(" print this message and exit\n"); + println!(" version= | -V | --version"); + println!(" print the version and authors and exit"); std::process::exit(0) } fn print_version() -> ! { - let version = env!("CARGO_PKG_VERSION"); - let authors = env!("CARGO_PKG_AUTHORS"); - - println!("squash version {version}"); - println!("written by {authors}"); + println!("squash version {VERSION}"); + println!("written by {AUTHORS}"); std::process::exit(0) } |