Org\Heigl\Hyphenator\Tokenizer\WhitespaceTokenizer

Complexity

Total Complexity

9

Size/Duplication

Total Lines	73
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	3

Importance

Changes	2
Bugs	0	Features	0

2 Methods

Rating	Name	Duplication	Size	Complexity
B	run()	0	27	6
A	tokenize()	0	15	3

<?php
/**
 * Copyright (c) 2008-2011 Andreas Heigl<andreas@heigl.org>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 * @category   Hyphenation
 * @package    Org_Heigl_Hyphenator
 * @subpackage Tokenizer
 * @author     Andreas Heigl <andreas@heigl.org>
 * @copyright  2008-2011 Andreas Heigl<andreas@heigl.org>
 * @license    http://www.opensource.org/licenses/mit-license.php MIT-License
 * @version    2.0.1
 * @link       http://github.com/heiglandreas/Hyphenator
 * @since      11.11.2011
 */

namespace Org\Heigl\Hyphenator\Tokenizer;

/**
 * Use Whitespace to split any input into tokens
 *
 * @category   Hyphenation
 * @package    Org_Heigl_Hyphenator
 * @subpackage Tokenizer
 * @author     Andreas Heigl <andreas@heigl.org>
 * @copyright  2008-2011 Andreas Heigl<andreas@heigl.org>
 * @license    http://www.opensource.org/licenses/mit-license.php MIT-License
 * @version    2.0.1
 * @link       http://github.com/heiglandreas/Hyphenator
 * @since      04.11.2011
 */
class WhitespaceTokenizer implements Tokenizer
{
    protected $whitespaces = array(
      '\s',           // white space
      "\xE2\x80\xAF", // non-breaking thin white space
      "\xC2\xA0",     // non-breaking space
    );

    /**
     * Split the given input into tokens using whitespace as splitter
     *
     * The input can be a string or a tokenRegistry. If the input is a
     * TokenRegistry, each item will be tokenized.
     *
     * @param string|\Org\Heigl\Hyphenator\Tokenizer\TokenRegistry $input The
     * input to be tokenized
     *
     * @return \Org\Heigl\Hyphenator\Tokenizer\TokenRegistry
     */
    public function run($input)
    {
        if ($input instanceof TokenRegistry) {
            // Tokenize a TokenRegistry
            foreach ($input as $token) {
                if (! $token instanceof WordToken) {
                    continue;
                }
                $newTokens = $this->tokenize($token->get());
                if ($newTokens == array($token)) {
                    continue;
                }
                $input->replace($token, $newTokens);
            }

            return $input ;
        }

        // Tokenize a simple string.
        $array =  $this->tokenize($input);
        $registry = new TokenRegistry();
        foreach ($array as $item) {
            $registry->add($item);
        }

        return $registry;
    }

    /**
     * Split the given string into tokens using whitespace.
     *
     * Each whitespace is placed in a WhitespaceToken and everything else is
     * placed in a WordToken-Object
     *
     * @param string $input The String to tokenize
     *
     * @return Token
     */
    private function tokenize($input)
    {
        $tokens = array();
        $splits = preg_split("/([".implode("", $this->whitespaces)."]+)/u", $input, -1, PREG_SPLIT_DELIM_CAPTURE);

        foreach ($splits as $split) {
            if (preg_match("/^[".implode("", $this->whitespaces)."]+$/um", $split)) {
                $tokens[] = new WhitespaceToken($split);
                continue;
            }
            $tokens[] = new WordToken($split);
        }

        return $tokens;
    }
}