mirror of
https://github.com/zoe-may/TDoG-Skin.git
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226 lines
6.4 KiB
Markdown
226 lines
6.4 KiB
Markdown
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<p align="center">
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<img src="https://static.hoa-project.net/Image/Hoa.svg" alt="Hoa" width="250px" />
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</p>
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---
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<p align="center">
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<a href="https://travis-ci.org/hoaproject/ustring"><img src="https://img.shields.io/travis/hoaproject/ustring/master.svg" alt="Build status" /></a>
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<a href="https://coveralls.io/github/hoaproject/ustring?branch=master"><img src="https://img.shields.io/coveralls/hoaproject/ustring/master.svg" alt="Code coverage" /></a>
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<a href="https://packagist.org/packages/hoa/ustring"><img src="https://img.shields.io/packagist/dt/hoa/ustring.svg" alt="Packagist" /></a>
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<a href="https://hoa-project.net/LICENSE"><img src="https://img.shields.io/packagist/l/hoa/ustring.svg" alt="License" /></a>
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</p>
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<p align="center">
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Hoa is a <strong>modular</strong>, <strong>extensible</strong> and
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<strong>structured</strong> set of PHP libraries.<br />
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Moreover, Hoa aims at being a bridge between industrial and research worlds.
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</p>
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# Hoa\Ustring
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[](https://webchat.freenode.net/?channels=#hoaproject)
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[](https://gitter.im/hoaproject/central)
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[](https://central.hoa-project.net/Documentation/Library/Ustring)
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[](https://waffle.io/hoaproject/ustring)
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This library allows to manipulate UTF-8 strings easily with some search
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algorithms.
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[Learn more](https://central.hoa-project.net/Documentation/Library/Ustring).
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## Installation
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With [Composer](https://getcomposer.org/), to include this library into
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your dependencies, you need to
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require [`hoa/ustring`](https://packagist.org/packages/hoa/ustring):
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```sh
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$ composer require hoa/ustring '~4.0'
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```
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For more installation procedures, please read [the Source
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page](https://hoa-project.net/Source.html).
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## Testing
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Before running the test suites, the development dependencies must be installed:
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```sh
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$ composer install
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```
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Then, to run all the test suites:
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```sh
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$ vendor/bin/hoa test:run
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```
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For more information, please read the [contributor
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guide](https://hoa-project.net/Literature/Contributor/Guide.html).
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## Quick usage
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We propose a quick overview of two usages: manipulate UTF-8 strings and one
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search algorithm.
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### Natural UTF-8 strings manipulation
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The `Hoa\Ustring\Ustring` class allows to manipulate easily UTF-8 strings in a
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very natural way. This class implements the `\ArrayAccess`, `\Countable` and
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`\IteratorAggregate` interfaces. We will use the following examples:
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```php
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$french = new Hoa\Ustring\Ustring('Je t\'aime');
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$arabic = new Hoa\Ustring\Ustring('أحبك');
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$japanese = new Hoa\Ustring\Ustring('私はあなたを愛して');
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```
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To get the first character, we will do:
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```php
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var_dump(
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$french[0], // string(1) "J"
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$arabic[0], // string(2) "أ"
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$japanese[0] // string(3) "私"
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);
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```
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And to get the last character, we will do `[-1]`. It supports unbounded (and
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modulo) indexes.
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We note that it cares about text **direction**. Look at `$arabic[0]`, it returns
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`أ` and not `ك`. To get the direction, we can use the
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`Hoa\Ustring\Ustring::getDirection` method (which call the
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`Hoa\Ustring\Ustring::getCharDirection` static method), it returns either
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`Hoa\Ustring\Ustring::LTR` (`0`) or `Hoa\Ustring\Ustring::RTL` (`1`):
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```php
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var_dump(
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$french->getDirection(), // int(0)
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$arabic->getDirection(), // int(1)
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$japanese->getDirection() // int(0)
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);
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```
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Text direction is also important for the `append`, `prepend`, `pad`… methods on
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`Hoa\Ustring\Ustring` for example.
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To get the length of a string, we can use the `count` function:
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```php
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var_dump(
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count($french), // int(9)
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count($arabic), // int(4)
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count($japanese) // int(9)
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);
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```
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We are also able to iterate over the string:
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```php
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foreach ($arabic as $letter) {
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var_dump($letter);
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}
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/**
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* Will output:
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* string(2) "أ"
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* string(2) "ح"
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* string(2) "ب"
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* string(2) "ك"
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*/
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```
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Again, text direction is useful here. For `$arabic`, the iteration is done from
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right to left.
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Some static methods are helpful, such as `fromCode`, `toCode` or `isUtf8` on
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`Hoa\Ustring\Ustring`:
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```php
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var_dump(
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Hoa\Ustring\Ustring::fromCode(0x1a9), // string(2) "Ʃ"
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Hoa\Ustring\Ustring::toCode('Ʃ'), // int(425) == 0x1a9
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Hoa\Ustring\Ustring::isUtf8('Ʃ') // bool(true)
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);
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```
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We can also transform any text into ASCII:
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```php
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$emoji = new Hoa\Ustring\Ustring('I ❤ Unicode');
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$maths = new Hoa\Ustring\Ustring('∀ i ∈ ℕ');
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echo
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$emoji->toAscii(), "\n",
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$maths->toAscii(), "\n";
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/**
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* Will output:
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* I (heavy black heart) Unicode
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* (for all) i (element of) N
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*/
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```
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### Search algorithm
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The `Hoa\Ustring\Search` implements search algorithms on strings.
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For example, the `Hoa\Ustring\Search::approximated` method make a search by
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approximated patterns (with *k* differences based upon the principle diagonal
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monotony). If we search the word `GATAA` in `CAGATAAGAGAA` with 1 difference, we
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will do:
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```php
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$search = Hoa\Ustring\Search::approximated(
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$haystack = 'CAGATAAGAGAA',
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$needle = 'GATAA',
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$k = 1
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);
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$solutions = array();
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foreach ($search as $pos) {
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$solutions[] = substr($haystack, $pos['i'], $pos['l']);
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}
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```
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We will found `AGATA`, `GATAA`, `ATAAG` and `GAGAA`.
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The result is not very handy but the algorithm is much optimized and found many
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applications.
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## Documentation
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The
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[hack book of `Hoa\Ustring`](https://central.hoa-project.net/Documentation/Library/Ustring) contains
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detailed information about how to use this library and how it works.
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To generate the documentation locally, execute the following commands:
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```sh
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$ composer require --dev hoa/devtools
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$ vendor/bin/hoa devtools:documentation --open
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```
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More documentation can be found on the project's website:
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[hoa-project.net](https://hoa-project.net/).
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## Getting help
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There are mainly two ways to get help:
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* On the [`#hoaproject`](https://webchat.freenode.net/?channels=#hoaproject)
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IRC channel,
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* On the forum at [users.hoa-project.net](https://users.hoa-project.net).
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## Contribution
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Do you want to contribute? Thanks! A detailed [contributor
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guide](https://hoa-project.net/Literature/Contributor/Guide.html) explains
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everything you need to know.
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## License
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Hoa is under the New BSD License (BSD-3-Clause). Please, see
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[`LICENSE`](https://hoa-project.net/LICENSE) for details.
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