Command Line/Programs - helpers::cli
Functions and macros for command line interaction
prompt! (macro)
This macro will prompt the user for input and try to cast it to the given type.
Whitespace around string ends will be trimmed.
Warning! if the user enters something that can't be parsed into the type you specify, this will print an error message and exit the current process
use std::net::Ipv4Addr;
let string: String = prompt!("Enter a string: ", String);
let number: i64 = prompt!("Enter a number: ", i64);
let ip: Ipv4Addr = prompt!("Enter an IPv4 address: ", Ipv4Addr);
prompt (function)
This is similar to the macro prompt!, but if the user enter invalid input it will print an error message and run again. This ensures you always get something from the user. However, it won't automatically cast to a type. It just returns a String, which you should cast manually.
Whitespace around the ends will be trimmed.
let input: String = prompt("Enter something: ");
Program
Currently, this enum allows you to get the installed version of a program. The current programs supported are:
- Git
- Docker
- Docker-Compose
- Python
- Ruby
let version: Version = cli::Program::Git.version();
// If the program isn't installed, this will be None
assert!( version.is_some() );
// You can get the major, minor, and patch numbers of the version
assert!( version.unwrap().major() >= 1 );