aboutsummaryrefslogtreecommitdiff
path: root/clap/examples/04_using_matches.rs
diff options
context:
space:
mode:
Diffstat (limited to 'clap/examples/04_using_matches.rs')
-rw-r--r--clap/examples/04_using_matches.rs54
1 files changed, 0 insertions, 54 deletions
diff --git a/clap/examples/04_using_matches.rs b/clap/examples/04_using_matches.rs
deleted file mode 100644
index a0a986f..0000000
--- a/clap/examples/04_using_matches.rs
+++ /dev/null
@@ -1,54 +0,0 @@
-extern crate clap;
-
-use clap::{App, Arg};
-
-fn main() {
-
- // Once all App settings (including all arguments) have been set, you call get_matches() which
- // parses the string provided by the user, and returns all the valid matches to the ones you
- // specified.
- //
- // You can then query the matches struct to get information about how the user ran the program
- // at startup.
- //
- // For this example, let's assume you created an App which accepts three arguments (plus two
- // generated by clap), a flag to display debugging information triggered with "-d" or
- // "--debug" as well as an option argument which specifies a custom configuration file to use
- // triggered with "-c file" or "--config file" or "--config=file" and finally a positional
- // argument which is the input file we want to work with, this will be the only required
- // argument.
- let matches = App::new("MyApp")
- .about("Parses an input file to do awesome things")
- .version("1.0")
- .author("Kevin K. <kbknapp@gmail.com>")
- .arg(Arg::with_name("debug")
- .help("turn on debugging information")
- .short("d")
- .long("debug"))
- .arg(Arg::with_name("config")
- .help("sets the config file to use")
- .short("c")
- .long("config"))
- .arg(Arg::with_name("input")
- .help("the input file to use")
- .index(1)
- .required(true))
- .get_matches();
-
- // We can find out whether or not debugging was turned on
- if matches.is_present("debug") {
- println!("Debugging is turned on");
- }
-
- // If we wanted to do some custom initialization based off some configuration file
- // provided by the user, we could get the file (A string of the file)
- if let Some(file) = matches.value_of("config") {
- println!("Using config file: {}", file);
- }
-
- // Because "input" is required we can safely call unwrap() because had the user NOT
- // specified a value, clap would have explained the error the user, and exited.
- println!("Doing real work with file: {}", matches.value_of("input").unwrap() );
-
- // Continued program logic goes here...
-}