Crate similar

This crate implements diffing utilities. It attempts to provide an abstraction interface over different types of diffing algorithms. It's based on the the diff algorithm implementations of pijul.

use similar::text::{ChangeTag, TextDiff};

let diff = TextDiff::from_lines(
    "Hello World\nThis is the second line.\nThis is the third.",
    "Hallo Welt\nThis is the second line.\nThis is life.\nMoar and more",
);

for op in diff.ops() {
    for change in diff.iter_changes(op) {
        let sign = match change.tag() {
            ChangeTag::Delete => "-",
            ChangeTag::Insert => "+",
            ChangeTag::Equal => " ",
        };
        print!("{}{}", sign, change);
    }
}

Functionality

• algorithms: This implements the different types of diffing algorithms. It provides both low level access to the algorithms with the minimal trait bounds necessary, as well as a generic interface.
• text: This extends the general diffing functionality to text (and more specifically line) based diff operations.

Features

The crate by default does not have any dependencies however for some use cases it's useful to pull in extra functionality. Likewise you can turn off some functionality.

• text: this feature is enabled by default and enables the text module. If the crate is used without default features it's removed.
• unicode: when this feature is enabled the text diffing functionality gains the ability to diff on a grapheme instead of character level. This is particularly useful when working with text containing emojis.
• inline: this feature gives access to additional functionality of the text module to provide inline information about which values changed in a line diff. This currently also enables the unicode feature.

Modules

algorithms	Various diff (longest common subsequence) algorithms.
text	Text diffing utilities.