parallel 0.6.4

Command-line CPU load balancer for executing jobs in parallel
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/// Removes the extension of a given input
pub fn remove_extension(input: &str) -> &str {
    let mut dir_index = 0;
    let mut ext_index = 0;

    for (id, character) in input.chars().enumerate() {
        if character == '/' { dir_index = id }
        if character == '.' { ext_index = id; }
    }

    // Account for hidden files and directories
    if ext_index == 0 || dir_index + 2 > ext_index { input } else { &input[0..ext_index] }
}

pub fn basename(input: &str) -> &str {
    let mut index = 0;
    for (id, character) in input.chars().enumerate() {
        if character == '/' { index = id; }
    }
    if index == 0 { input } else { &input[index+1..] }
}

pub fn dirname(input: &str) -> &str {
    let mut index = 0;
    for (id, character) in input.chars().enumerate() {
        if character == '/' { index = id; }
    }
    if index == 0 { "." } else { &input[0..index] }
}

#[test]
fn path_remove_ext_simple() {
    assert_eq!(remove_extension("foo.txt"), "foo");
}

#[test]
fn path_remove_ext_dir() {
    assert_eq!(remove_extension("dir/foo.txt"), "dir/foo");
}

#[test]
fn path_hidden() {
    assert_eq!(remove_extension(".foo"), ".foo")
}

#[test]
fn path_remove_ext_empty() {
    assert_eq!(remove_extension(""), "");
}

#[test]
fn path_basename_simple() {
    assert_eq!(basename("foo.txt"), "foo.txt");
}

#[test]
fn path_basename_dir() {
    assert_eq!(basename("dir/foo.txt"), "foo.txt");
}

#[test]
fn path_basename_empty() {
    assert_eq!(basename(""), "");
}

#[test]
fn path_dirname_simple() {
    assert_eq!(dirname("foo.txt"), ".");
}

#[test]
fn path_dirname_dir() {
    assert_eq!(dirname("dir/foo.txt"), "dir");
}

#[test]
fn path_dirname_empty() {
    assert_eq!(dirname(""), ".");
}