rscount command

Count the valid lines in Rust codes.

The rule of counting

It will skip the blank line and comments. For example:

// this line will be ignored since it is a comment.
/*
	this comment is also ignored since it is a block of a comment.
*/

/*
 another block of comment.
*/	// this is a comment line too.

/*

*/ fn main() { // but this is a valid line
  println!("hello world!"); // a valid line again
}

the total of valid Rust code lines above is 3.

Usages

Count the lines of a Rust source file

It is able to count the valid line in a Rust source file.

Type the command like this:

rscount file="./test_dir/test.rs"

It will only count the lines of the file we input. This example show that rscount will count the valid lines of ./test_dir/test.rs and report to the user.

Count the lines of Rust source files in a specific path

It is able to search a path that contains many sub-directories having number of Rust source files and count valid lines of all Rust source files.

Type the command like this:

rscount path="./test_dir/"

It will find the Rust source files recursively in test_dir and sum up the valid lines and report it to the user.

Count the lines using multiple thread

If there are lots of Rust code files in the path, you can add thread in the parameters like this:

rscount path="./test_dir/" thread

It will count the lines using multiple threads and the number of the threads will be estimated by std::thread::available_parallelism.

Possibly, there are some other interesting and simple things we can do in the future