Primo

primo is a library and command-line tool to sort files like UNIX’s sort. Unlike sort, however, it interprets series of digits as full numbers:

```sh

input

I have 9 apples. I have 42 apples. I have 5 apples.

sort

I have 42 apples. I have 5 apples. I have 9 apples.

primo

I have 5 apples. I have 9 apples. I have 42 apples. ```

Note this is my first ever Rust program so the code might not be the best.

Usage

Command-Line

primo [<filename>]

It reads on stdin or from the provided file and print the sorted version on stdout.

Library

```rust extern crate primo;

fn main() { let mut lines = vec![ "my 1st line".tostring(), "...".tostring(), "my 15th line".tostring(), "my 2nd line".tostring(), ];

primo::sort_vec(&mut lines);

// prints:
//    ...
//    my 1st line
//    my 2nd line
//    my 15th line
//
for line in lines {
    println!("{}", line);
}

} ```

Known Issues

• The sort is quite slow for now because the parsing function is called multiple times on each string
• Chars are treated as numbers, so "abc" will sort after "25bc" and before "27bc" because 'a'’s i32 value is 26.

FAQ

What about sort’s -V option?

The GNU coreutils package has a sort implementation that supports primo’s main use-case with its -V option. I unfortunately learnt about this option after writing primo.