#text #unicode #grapheme #word #boundary

no-std unicode-segmentation

This crate provides Grapheme Cluster, Word and Sentence boundaries according to Unicode Standard Annex #29 rules

12 releases (7 stable)

1.3.0 May 15, 2019
1.2.1 Apr 29, 2018
1.2.0 May 16, 2017
1.1.0 Feb 6, 2017
0.1.1 Jul 9, 2015

#2 in Text processing

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242,086 downloads per month
Used in 1,117 crates (84 directly)

MIT/Apache

528KB
6.5K SLoC

Iterators which split strings on Grapheme Cluster or Word boundaries, according to the Unicode Standard Annex #29 rules.

Build Status

Documentation

extern crate unicode_segmentation;

use unicode_segmentation::UnicodeSegmentation;

fn main() {
    let s = "a̐éö̲\r\n";
    let g = UnicodeSegmentation::graphemes(s, true).collect::<Vec<&str>>();
    let b: &[_] = &["", "", "ö̲", "\r\n"];
    assert_eq!(g, b);

    let s = "The quick (\"brown\") fox can't jump 32.3 feet, right?";
    let w = s.unicode_words().collect::<Vec<&str>>();
    let b: &[_] = &["The", "quick", "brown", "fox", "can't", "jump", "32.3", "feet", "right"];
    assert_eq!(w, b);

    let s = "The quick (\"brown\")  fox";
    let w = s.split_word_bounds().collect::<Vec<&str>>();
    let b: &[_] = &["The", " ", "quick", " ", "(", "\"", "brown", "\"", ")", " ", " ", "fox"];
    assert_eq!(w, b);
}

no_std

unicode-segmentation does not depend on libstd, so it can be used in crates with the #![no_std] attribute.

crates.io

You can use this package in your project by adding the following to your Cargo.toml:

[dependencies]
unicode-segmentation = "1.3.0"

Change Log

1.3.0

  • #24 Add support for sentence boundaries
  • #44 Treat gc=No as a subset of gc=N

1.2.1

  • #37: Fix panic in provide_context.
  • #40: Fix crash in prev_boundary.

1.2.0

  • New GraphemeCursor API allows random access and bidirectional iteration.
  • Fixed incorrect splitting of certain emoji modifier sequences.

1.1.0

  • Add as_str methods to the iterator types.

1.0.3

  • Code cleanup and additional tests.

1.0.1

  • Fix a bug affecting some grapheme clusters containing Prepend characters.

1.0.0

  • Upgrade to Unicode 9.0.0.

No runtime deps