1 | <?php
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2 | // +----------------------------------------------------------------------+
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3 | // | PHP Version 4 |
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4 | // +----------------------------------------------------------------------+
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5 | // | Copyright (c) 1997-2004 The PHP Group |
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6 | // +----------------------------------------------------------------------+
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7 | // | This source file is subject to version 3.0 of the PHP license, |
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8 | // | that is bundled with this package in the file LICENSE, and is |
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9 | // | available at through the world-wide-web at |
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10 | // | http://www.php.net/license/3_0.txt. |
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11 | // | If you did not receive a copy of the PHP license and are unable to |
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12 | // | obtain it through the world-wide-web, please send a note to |
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13 | // | license@php.net so we can mail you a copy immediately. |
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14 | // +----------------------------------------------------------------------+
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15 | // | Authors: Aidan Lister <aidan@php.net> |
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16 | // +----------------------------------------------------------------------+
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17 | //
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18 | // $Id: php_strip_whitespace.php,v 1.10 2005/01/26 04:55:13 aidan Exp $
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19 |
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20 |
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21 | /**
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22 | * Replace php_strip_whitespace()
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23 | *
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24 | * @category PHP
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25 | * @package PHP_Compat
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26 | * @link http://php.net/function.php_strip_whitespace
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27 | * @author Aidan Lister <aidan@php.net>
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28 | * @version $Revision: 1.10 $
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29 | * @since PHP 5
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30 | * @require PHP 4.0.0 (user_error) + Tokenizer extension
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31 | */
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32 | if (!function_exists('php_strip_whitespace')) {
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33 | function php_strip_whitespace($file)
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34 | {
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35 | // Sanity check
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36 | if (!is_scalar($file)) {
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37 | user_error('php_strip_whitespace() expects parameter 1 to be string, ' .
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38 | gettype($file) . ' given', E_USER_WARNING);
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39 | return;
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40 | }
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41 |
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42 | // Load file / tokens
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43 | $source = implode('', file($file));
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44 | $tokens = token_get_all($source);
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45 |
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46 | // Init
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47 | $source = '';
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48 | $was_ws = false;
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49 |
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50 | // Process
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51 | foreach ($tokens as $token) {
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52 | if (is_string($token)) {
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53 | // Single character tokens
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54 | $source .= $token;
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55 | } else {
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56 | list($id, $text) = $token;
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57 |
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58 | switch ($id) {
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59 | // Skip all comments
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60 | case T_COMMENT:
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61 | case T_ML_COMMENT:
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62 | case T_DOC_COMMENT:
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63 | break;
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64 |
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65 | // Remove whitespace
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66 | case T_WHITESPACE:
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67 | // We don't want more than one whitespace in a row replaced
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68 | if ($was_ws !== true) {
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69 | $source .= ' ';
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70 | }
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71 | $was_ws = true;
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72 | break;
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73 |
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74 | default:
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75 | $was_ws = false;
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76 | $source .= $text;
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77 | break;
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78 | }
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79 | }
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80 | }
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81 |
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82 | return $source;
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83 | }
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84 | }
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85 |
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86 | ?> |
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