likewise/src/lib.rs
2021-01-30 23:23:11 +01:00

47 lines
1.8 KiB
Rust

//! 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](https://pijul.org/).
//!
//! ```rust
//! # #[cfg(feature = "text")] {
//! 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.value());
//! }
//! }
//! # }
//! ```
//!
//! ## 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.
//!
//! * `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.
//! * `text`: this feature is enabled by default and enables the [`text`] module.
//! If the crate is used without default features it's removed.
pub mod algorithms;
pub mod text;