171 lines
3.7 KiB
Markdown
171 lines
3.7 KiB
Markdown
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<!--
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@license Apache-2.0
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Copyright (c) 2021 The Stdlib Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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# grapheme
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> Grapheme cluster break tooling.
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<!-- Section to include introductory text. Make sure to keep an empty line after the intro `section` element and another before the `/section` close. -->
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<section class="intro">
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</section>
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<!-- /.intro -->
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<!-- Package usage documentation. -->
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<section class="usage">
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## Usage
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```javascript
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var grapheme = require( '@stdlib/string/tools/grapheme-cluster-break' );
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```
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#### grapheme
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A collection of functions for performing grapheme cluster break operations.
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* * *
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### Methods
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#### grapheme.breakProperty( code )
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Returns the grapheme break property from the [Unicode Standard][unicode-grapheme-break-property].
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```javascript
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var out = grapheme.breakProperty( 0x008f );
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// returns 2
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out = grapheme.breakProperty( 0x111C2 );
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// returns 12
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out = grapheme.breakProperty( 0x1F3FC );
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// returns 3
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```
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#### grapheme.emojiProperty( code )
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Returns the emoji property from the [Unicode Standard][unicode-emoji-property].
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```javascript
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var out = grapheme.emojiProperty( 0x23EC );
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// returns 101
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out = grapheme.emojiProperty( 0x1FFFE );
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// returns 11
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```
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#### grapheme.breakType( breaks, emoji )
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Returns the break type between grapheme breaking classes according to _UAX #29 3.1.1 Grapheme Cluster Boundary Rules_ on extended grapheme clusters.
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```javascript
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var out = grapheme.breakType( [ 11, 3, 11 ], [ 11, 11, 11 ] );
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// returns 1
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```
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* * *
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### Properties
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#### grapheme.constants
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An object mapping break type names to integer values.
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```javascript
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var out = grapheme.constants;
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// returns {...}
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```
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</section>
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<!-- /.usage -->
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<!-- Package usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
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<section class="notes">
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</section>
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<!-- /.notes -->
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<!-- Package usage examples. -->
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<section class="examples">
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## Examples
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<!-- eslint no-undef: "error" -->
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```javascript
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var grapheme = require( '@stdlib/string/tools/grapheme-cluster-break' );
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var out = grapheme.breakProperty( 0x008f );
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// returns 2
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out = grapheme.emojiProperty( 0x23EC );
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// returns 101
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out = grapheme.breakType( [ 11, 3, 11 ], [ 11, 11, 11 ] );
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// returns 1
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out = grapheme.constants;
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// returns {...}
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```
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</section>
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<!-- /.examples -->
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<!-- Section to include cited references. If references are included, add a horizontal rule *before* the section. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
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<section class="references">
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</section>
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<!-- /.references -->
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<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->
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<section class="related">
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</section>
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<!-- /.related -->
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<!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
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<section class="links">
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[unicode-grapheme-break-property]: https://www.unicode.org/Public/13.0.0/ucd/auxiliary/GraphemeBreakProperty.txt
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[unicode-emoji-property]: https://www.unicode.org/Public/13.0.0/ucd/emoji/emoji-data.txt
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<!-- <related-links> -->
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<!-- </related-links> -->
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</section>
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<!-- /.links -->
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