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Command Line Argument Parser written in Rust
A simply library for parsing command line arguments when writing command line and console applications.
You can use
clap to lay out a list of possible valid command line arguments and let
clap parse the string given by the user at runtime.
clap you define a set of parameters and rules for your arguments and at runtime
clap will determine their validity.
clap provides the traditional version and help switches 'for free' by parsing the list of possible valid arguments lazily at runtime.
i.e. only when it's been determined that the user wants or needs to see the help and version information.
After defining a list of possible valid arguments you get a list of matches that the user supplied at runtime. You can then use this list to determine the functioning of your program.
extern crate clap; use ; // ... let matches = new .version .author .about .arg .arg .arg .get_matches; if let Some = matches.value_of if let Some = matches.value_of match matches.occurrences_of // more porgram logic goes here...
If you were to compile the above program and run it with the flag
-h the following output woud be presented
clap as a dependecy in your
Cargo.toml file to use from crates.io:
[dependencies] clap = "*"
Or to simply track the latest on the master branch at github:
[dependencies.clap] git = "https://github.com/kbknapp/clap-rs.git"
cargo build or
cargo update for your project.
You can find complete documentation on the github-pages site for this project.