1 | <?php |
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2 | |
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3 | /** |
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4 | * CSSTidy - CSS Parser and Optimiser |
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5 | * |
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6 | * CSS Optimising Class |
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7 | * This class optimises CSS data generated by csstidy. |
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8 | * |
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9 | * Copyright 2005, 2006, 2007 Florian Schmitz |
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10 | * |
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11 | * This file is part of CSSTidy. |
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12 | * |
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13 | * CSSTidy is free software; you can redistribute it and/or modify |
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14 | * it under the terms of the GNU Lesser General Public License as published by |
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15 | * the Free Software Foundation; either version 2.1 of the License, or |
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16 | * (at your option) any later version. |
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17 | * |
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18 | * CSSTidy is distributed in the hope that it will be useful, |
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19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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21 | * GNU Lesser General Public License for more details. |
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22 | * |
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23 | * You should have received a copy of the GNU Lesser General Public License |
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24 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
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25 | * |
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26 | * @license http://opensource.org/licenses/lgpl-license.php GNU Lesser General Public License |
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27 | * @package csstidy |
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28 | * @author Florian Schmitz (floele at gmail dot com) 2005-2007 |
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29 | * @author Brett Zamir (brettz9 at yahoo dot com) 2007 |
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30 | * @author Nikolay Matsievsky (speed at webo dot name) 2009-2010 |
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31 | * @author Cedric Morin (cedric at yterium dot com) 2010-2012 |
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32 | */ |
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33 | |
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34 | /** |
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35 | * CSS Optimising Class |
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36 | * |
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37 | * This class optimises CSS data generated by csstidy. |
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38 | * |
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39 | * @package csstidy |
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40 | * @author Florian Schmitz (floele at gmail dot com) 2005-2006 |
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41 | * @version 1.0 |
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42 | */ |
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43 | class csstidy_optimise { |
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44 | |
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45 | /** |
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46 | * Constructor |
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47 | * @param array $css contains the class csstidy |
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48 | * @access private |
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49 | * @version 1.0 |
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50 | */ |
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51 | function csstidy_optimise(&$css) { |
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52 | $this->parser = & $css; |
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53 | $this->css = & $css->css; |
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54 | $this->sub_value = & $css->sub_value; |
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55 | $this->at = & $css->at; |
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56 | $this->selector = & $css->selector; |
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57 | $this->property = & $css->property; |
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58 | $this->value = & $css->value; |
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59 | } |
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60 | |
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61 | /** |
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62 | * Optimises $css after parsing |
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63 | * @access public |
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64 | * @version 1.0 |
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65 | */ |
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66 | function postparse() { |
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67 | if ($this->parser->get_cfg('preserve_css')) { |
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68 | return; |
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69 | } |
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70 | |
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71 | if ($this->parser->get_cfg('merge_selectors') === 2) { |
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72 | foreach ($this->css as $medium => $value) { |
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73 | $this->merge_selectors($this->css[$medium]); |
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74 | } |
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75 | } |
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76 | |
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77 | if ($this->parser->get_cfg('discard_invalid_selectors')) { |
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78 | foreach ($this->css as $medium => $value) { |
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79 | $this->discard_invalid_selectors($this->css[$medium]); |
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80 | } |
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81 | } |
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82 | |
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83 | if ($this->parser->get_cfg('optimise_shorthands') > 0) { |
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84 | foreach ($this->css as $medium => $value) { |
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85 | foreach ($value as $selector => $value1) { |
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86 | $this->css[$medium][$selector] = csstidy_optimise::merge_4value_shorthands($this->css[$medium][$selector]); |
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87 | |
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88 | if ($this->parser->get_cfg('optimise_shorthands') < 2) { |
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89 | continue; |
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90 | } |
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91 | |
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92 | $this->css[$medium][$selector] = csstidy_optimise::merge_font($this->css[$medium][$selector]); |
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93 | |
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94 | if ($this->parser->get_cfg('optimise_shorthands') < 3) { |
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95 | continue; |
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96 | } |
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97 | |
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98 | $this->css[$medium][$selector] = csstidy_optimise::merge_bg($this->css[$medium][$selector]); |
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99 | if (empty($this->css[$medium][$selector])) { |
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100 | unset($this->css[$medium][$selector]); |
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101 | } |
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102 | } |
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103 | } |
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104 | } |
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105 | } |
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106 | |
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107 | /** |
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108 | * Optimises values |
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109 | * @access public |
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110 | * @version 1.0 |
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111 | */ |
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112 | function value() { |
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113 | $shorthands = & $GLOBALS['csstidy']['shorthands']; |
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114 | |
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115 | // optimise shorthand properties |
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116 | if (isset($shorthands[$this->property])) { |
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117 | $temp = csstidy_optimise::shorthand($this->value); // FIXME - move |
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118 | if ($temp != $this->value) { |
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119 | $this->parser->log('Optimised shorthand notation (' . $this->property . '): Changed "' . $this->value . '" to "' . $temp . '"', 'Information'); |
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120 | } |
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121 | $this->value = $temp; |
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122 | } |
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123 | |
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124 | // Remove whitespace at ! important |
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125 | if ($this->value != $this->compress_important($this->value)) { |
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126 | $this->parser->log('Optimised !important', 'Information'); |
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127 | } |
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128 | } |
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129 | |
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130 | /** |
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131 | * Optimises shorthands |
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132 | * @access public |
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133 | * @version 1.0 |
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134 | */ |
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135 | function shorthands() { |
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136 | $shorthands = & $GLOBALS['csstidy']['shorthands']; |
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137 | |
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138 | if (!$this->parser->get_cfg('optimise_shorthands') || $this->parser->get_cfg('preserve_css')) { |
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139 | return; |
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140 | } |
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141 | |
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142 | if ($this->property === 'font' && $this->parser->get_cfg('optimise_shorthands') > 1) { |
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143 | $this->css[$this->at][$this->selector]['font']=''; |
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144 | $this->parser->merge_css_blocks($this->at, $this->selector, csstidy_optimise::dissolve_short_font($this->value)); |
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145 | } |
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146 | if ($this->property === 'background' && $this->parser->get_cfg('optimise_shorthands') > 2) { |
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147 | $this->css[$this->at][$this->selector]['background']=''; |
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148 | $this->parser->merge_css_blocks($this->at, $this->selector, csstidy_optimise::dissolve_short_bg($this->value)); |
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149 | } |
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150 | if (isset($shorthands[$this->property])) { |
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151 | $this->parser->merge_css_blocks($this->at, $this->selector, csstidy_optimise::dissolve_4value_shorthands($this->property, $this->value)); |
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152 | if (is_array($shorthands[$this->property])) { |
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153 | $this->css[$this->at][$this->selector][$this->property] = ''; |
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154 | } |
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155 | } |
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156 | } |
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157 | |
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158 | /** |
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159 | * Optimises a sub-value |
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160 | * @access public |
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161 | * @version 1.0 |
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162 | */ |
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163 | function subvalue() { |
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164 | $replace_colors = & $GLOBALS['csstidy']['replace_colors']; |
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165 | |
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166 | $this->sub_value = trim($this->sub_value); |
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167 | if ($this->sub_value == '') { // caution : '0' |
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168 | return; |
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169 | } |
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170 | |
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171 | $important = ''; |
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172 | if (csstidy::is_important($this->sub_value)) { |
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173 | $important = '!important'; |
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174 | } |
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175 | $this->sub_value = csstidy::gvw_important($this->sub_value); |
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176 | |
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177 | // Compress font-weight |
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178 | if ($this->property === 'font-weight' && $this->parser->get_cfg('compress_font-weight')) { |
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179 | if ($this->sub_value === 'bold') { |
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180 | $this->sub_value = '700'; |
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181 | $this->parser->log('Optimised font-weight: Changed "bold" to "700"', 'Information'); |
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182 | } else if ($this->sub_value === 'normal') { |
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183 | $this->sub_value = '400'; |
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184 | $this->parser->log('Optimised font-weight: Changed "normal" to "400"', 'Information'); |
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185 | } |
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186 | } |
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187 | |
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188 | $temp = $this->compress_numbers($this->sub_value); |
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189 | if (strcasecmp($temp, $this->sub_value) !== 0) { |
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190 | if (strlen($temp) > strlen($this->sub_value)) { |
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191 | $this->parser->log('Fixed invalid number: Changed "' . $this->sub_value . '" to "' . $temp . '"', 'Warning'); |
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192 | } else { |
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193 | $this->parser->log('Optimised number: Changed "' . $this->sub_value . '" to "' . $temp . '"', 'Information'); |
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194 | } |
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195 | $this->sub_value = $temp; |
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196 | } |
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197 | if ($this->parser->get_cfg('compress_colors')) { |
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198 | $temp = $this->cut_color($this->sub_value); |
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199 | if ($temp !== $this->sub_value) { |
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200 | if (isset($replace_colors[$this->sub_value])) { |
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201 | $this->parser->log('Fixed invalid color name: Changed "' . $this->sub_value . '" to "' . $temp . '"', 'Warning'); |
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202 | } else { |
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203 | $this->parser->log('Optimised color: Changed "' . $this->sub_value . '" to "' . $temp . '"', 'Information'); |
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204 | } |
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205 | $this->sub_value = $temp; |
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206 | } |
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207 | } |
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208 | $this->sub_value .= $important; |
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209 | } |
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210 | |
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211 | /** |
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212 | * Compresses shorthand values. Example: margin:1px 1px 1px 1px -> margin:1px |
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213 | * @param string $value |
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214 | * @access public |
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215 | * @return string |
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216 | * @version 1.0 |
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217 | */ |
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218 | function shorthand($value) { |
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219 | $important = ''; |
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220 | if (csstidy::is_important($value)) { |
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221 | $values = csstidy::gvw_important($value); |
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222 | $important = '!important'; |
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223 | } |
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224 | else |
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225 | $values = $value; |
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226 | |
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227 | $values = explode(' ', $values); |
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228 | switch (count($values)) { |
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229 | case 4: |
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230 | if ($values[0] == $values[1] && $values[0] == $values[2] && $values[0] == $values[3]) { |
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231 | return $values[0] . $important; |
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232 | } elseif ($values[1] == $values[3] && $values[0] == $values[2]) { |
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233 | return $values[0] . ' ' . $values[1] . $important; |
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234 | } elseif ($values[1] == $values[3]) { |
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235 | return $values[0] . ' ' . $values[1] . ' ' . $values[2] . $important; |
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236 | } |
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237 | break; |
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238 | |
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239 | case 3: |
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240 | if ($values[0] == $values[1] && $values[0] == $values[2]) { |
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241 | return $values[0] . $important; |
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242 | } elseif ($values[0] == $values[2]) { |
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243 | return $values[0] . ' ' . $values[1] . $important; |
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244 | } |
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245 | break; |
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246 | |
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247 | case 2: |
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248 | if ($values[0] == $values[1]) { |
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249 | return $values[0] . $important; |
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250 | } |
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251 | break; |
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252 | } |
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253 | |
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254 | return $value; |
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255 | } |
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256 | |
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257 | /** |
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258 | * Removes unnecessary whitespace in ! important |
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259 | * @param string $string |
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260 | * @return string |
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261 | * @access public |
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262 | * @version 1.1 |
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263 | */ |
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264 | function compress_important(&$string) { |
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265 | if (csstidy::is_important($string)) { |
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266 | $string = csstidy::gvw_important($string) . '!important'; |
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267 | } |
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268 | return $string; |
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269 | } |
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270 | |
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271 | /** |
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272 | * Color compression function. Converts all rgb() values to #-values and uses the short-form if possible. Also replaces 4 color names by #-values. |
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273 | * @param string $color |
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274 | * @return string |
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275 | * @version 1.1 |
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276 | */ |
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277 | function cut_color($color) { |
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278 | $replace_colors = & $GLOBALS['csstidy']['replace_colors']; |
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279 | |
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280 | // if it's a string, don't touch ! |
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281 | if (strncmp($color,"'",1)==0 OR strncmp($color,'"',1)==0) |
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282 | return $color; |
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283 | |
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284 | /* expressions complexes de type gradient */ |
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285 | if (strpos($color,"(")!==false AND strncmp($color,'rgb(',4)!=0){ |
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286 | // on ne touche pas aux couleurs dans les expression ms, c'est trop sensible |
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287 | if (stripos($color,"progid:")!==false) |
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288 | return $color; |
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289 | preg_match_all(",rgb\([^)]+\),i",$color,$matches,PREG_SET_ORDER); |
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290 | if (count($matches)){ |
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291 | foreach ($matches as $m){ |
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292 | $color = str_replace($m[0],$this->cut_color($m[0]),$color); |
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293 | } |
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294 | } |
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295 | preg_match_all(",#[0-9a-f]{6}(?=[^0-9a-f]),i",$color,$matches,PREG_SET_ORDER); |
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296 | if (count($matches)){ |
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297 | foreach ($matches as $m){ |
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298 | $color = str_replace($m[0],$this->cut_color($m[0]),$color); |
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299 | } |
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300 | } |
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301 | return $color; |
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302 | } |
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303 | |
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304 | // rgb(0,0,0) -> #000000 (or #000 in this case later) |
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305 | if (strncasecmp($color, 'rgb(', 4)==0) { |
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306 | $color_tmp = substr($color, 4, strlen($color) - 5); |
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307 | $color_tmp = explode(',', $color_tmp); |
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308 | for ($i = 0; $i < count($color_tmp); $i++) { |
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309 | $color_tmp[$i] = trim($color_tmp[$i]); |
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310 | if (substr($color_tmp[$i], -1) === '%') { |
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311 | $color_tmp[$i] = round((255 * $color_tmp[$i]) / 100); |
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312 | } |
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313 | if ($color_tmp[$i] > 255) |
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314 | $color_tmp[$i] = 255; |
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315 | } |
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316 | $color = '#'; |
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317 | for ($i = 0; $i < 3; $i++) { |
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318 | if ($color_tmp[$i] < 16) { |
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319 | $color .= '0' . dechex($color_tmp[$i]); |
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320 | } else { |
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321 | $color .= dechex($color_tmp[$i]); |
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322 | } |
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323 | } |
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324 | } |
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325 | |
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326 | // Fix bad color names |
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327 | if (isset($replace_colors[strtolower($color)])) { |
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328 | $color = $replace_colors[strtolower($color)]; |
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329 | } |
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330 | |
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331 | // #aabbcc -> #abc |
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332 | if (strlen($color) == 7) { |
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333 | $color_temp = strtolower($color); |
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334 | if ($color_temp{0} === '#' && $color_temp{1} == $color_temp{2} && $color_temp{3} == $color_temp{4} && $color_temp{5} == $color_temp{6}) { |
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335 | $color = '#' . $color{1} . $color{3} . $color{5}; |
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336 | } |
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337 | } |
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338 | |
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339 | switch (strtolower($color)) { |
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340 | /* color name -> hex code */ |
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341 | case 'black': return '#000'; |
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342 | case 'fuchsia': return '#f0f'; |
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343 | case 'white': return '#fff'; |
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344 | case 'yellow': return '#ff0'; |
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345 | |
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346 | /* hex code -> color name */ |
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347 | case '#800000': return 'maroon'; |
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348 | case '#ffa500': return 'orange'; |
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349 | case '#808000': return 'olive'; |
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350 | case '#800080': return 'purple'; |
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351 | case '#008000': return 'green'; |
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352 | case '#000080': return 'navy'; |
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353 | case '#008080': return 'teal'; |
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354 | case '#c0c0c0': return 'silver'; |
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355 | case '#808080': return 'gray'; |
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356 | case '#f00': return 'red'; |
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357 | } |
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358 | |
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359 | return $color; |
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360 | } |
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361 | |
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362 | /** |
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363 | * Compresses numbers (ie. 1.0 becomes 1 or 1.100 becomes 1.1 ) |
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364 | * @param string $subvalue |
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365 | * @return string |
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366 | * @version 1.2 |
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367 | */ |
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368 | function compress_numbers($subvalue) { |
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369 | $unit_values = & $GLOBALS['csstidy']['unit_values']; |
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370 | $color_values = & $GLOBALS['csstidy']['color_values']; |
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371 | |
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372 | // for font:1em/1em sans-serif...; |
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373 | if ($this->property === 'font') { |
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374 | $temp = explode('/', $subvalue); |
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375 | } else { |
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376 | $temp = array($subvalue); |
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377 | } |
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378 | for ($l = 0; $l < count($temp); $l++) { |
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379 | // if we are not dealing with a number at this point, do not optimise anything |
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380 | $number = $this->AnalyseCssNumber($temp[$l]); |
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381 | if ($number === false) { |
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382 | return $subvalue; |
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383 | } |
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384 | |
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385 | // Fix bad colors |
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386 | if (in_array($this->property, $color_values)) { |
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387 | $temp[$l] = '#' . $temp[$l]; |
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388 | continue; |
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389 | } |
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390 | |
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391 | if (abs($number[0]) > 0) { |
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392 | if ($number[1] == '' && in_array($this->property, $unit_values, true)) { |
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393 | $number[1] = 'px'; |
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394 | } |
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395 | } else { |
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396 | $number[1] = ''; |
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397 | } |
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398 | |
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399 | $temp[$l] = $number[0] . $number[1]; |
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400 | } |
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401 | |
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402 | return ((count($temp) > 1) ? $temp[0] . '/' . $temp[1] : $temp[0]); |
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403 | } |
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404 | |
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405 | /** |
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406 | * Checks if a given string is a CSS valid number. If it is, |
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407 | * an array containing the value and unit is returned |
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408 | * @param string $string |
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409 | * @return array ('unit' if unit is found or '' if no unit exists, number value) or false if no number |
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410 | */ |
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411 | function AnalyseCssNumber($string) { |
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412 | // most simple checks first |
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413 | if (strlen($string) == 0 || ctype_alpha($string{0})) { |
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414 | return false; |
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415 | } |
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416 | |
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417 | $units = & $GLOBALS['csstidy']['units']; |
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418 | $return = array(0, ''); |
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419 | |
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420 | $return[0] = floatval($string); |
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421 | if (abs($return[0]) > 0 && abs($return[0]) < 1) { |
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422 | if ($return[0] < 0) { |
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423 | $return[0] = '-' . ltrim(substr($return[0], 1), '0'); |
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424 | } else { |
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425 | $return[0] = ltrim($return[0], '0'); |
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426 | } |
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427 | } |
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428 | |
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429 | // Look for unit and split from value if exists |
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430 | foreach ($units as $unit) { |
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431 | $expectUnitAt = strlen($string) - strlen($unit); |
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432 | if (!($unitInString = stristr($string, $unit))) { // mb_strpos() fails with "false" |
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433 | continue; |
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434 | } |
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435 | $actualPosition = strpos($string, $unitInString); |
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436 | if ($expectUnitAt === $actualPosition) { |
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437 | $return[1] = $unit; |
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438 | $string = substr($string, 0, - strlen($unit)); |
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439 | break; |
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440 | } |
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441 | } |
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442 | if (!is_numeric($string)) { |
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443 | return false; |
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444 | } |
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445 | return $return; |
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446 | } |
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447 | |
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448 | /** |
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449 | * Merges selectors with same properties. Example: a{color:red} b{color:red} -> a,b{color:red} |
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450 | * Very basic and has at least one bug. Hopefully there is a replacement soon. |
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451 | * @param array $array |
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452 | * @return array |
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453 | * @access public |
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454 | * @version 1.2 |
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455 | */ |
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456 | function merge_selectors(&$array) { |
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457 | $css = $array; |
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458 | foreach ($css as $key => $value) { |
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459 | if (!isset($css[$key])) { |
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460 | continue; |
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461 | } |
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462 | $newsel = ''; |
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463 | |
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464 | // Check if properties also exist in another selector |
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465 | $keys = array(); |
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466 | // PHP bug (?) without $css = $array; here |
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467 | foreach ($css as $selector => $vali) { |
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468 | if ($selector == $key) { |
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469 | continue; |
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470 | } |
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471 | |
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472 | if ($css[$key] === $vali) { |
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473 | $keys[] = $selector; |
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474 | } |
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475 | } |
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476 | |
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477 | if (!empty($keys)) { |
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478 | $newsel = $key; |
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479 | unset($css[$key]); |
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480 | foreach ($keys as $selector) { |
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481 | unset($css[$selector]); |
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482 | $newsel .= ',' . $selector; |
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483 | } |
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484 | $css[$newsel] = $value; |
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485 | } |
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486 | } |
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487 | $array = $css; |
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488 | } |
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489 | |
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490 | /** |
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491 | * Removes invalid selectors and their corresponding rule-sets as |
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492 | * defined by 4.1.7 in REC-CSS2. This is a very rudimentary check |
---|
493 | * and should be replaced by a full-blown parsing algorithm or |
---|
494 | * regular expression |
---|
495 | * @version 1.4 |
---|
496 | */ |
---|
497 | function discard_invalid_selectors(&$array) { |
---|
498 | $invalid = array('+' => true, '~' => true, ',' => true, '>' => true); |
---|
499 | foreach ($array as $selector => $decls) { |
---|
500 | $ok = true; |
---|
501 | $selectors = array_map('trim', explode(',', $selector)); |
---|
502 | foreach ($selectors as $s) { |
---|
503 | $simple_selectors = preg_split('/\s*[+>~\s]\s*/', $s); |
---|
504 | foreach ($simple_selectors as $ss) { |
---|
505 | if ($ss === '') |
---|
506 | $ok = false; |
---|
507 | // could also check $ss for internal structure, |
---|
508 | // but that probably would be too slow |
---|
509 | } |
---|
510 | } |
---|
511 | if (!$ok) |
---|
512 | unset($array[$selector]); |
---|
513 | } |
---|
514 | } |
---|
515 | |
---|
516 | /** |
---|
517 | * Dissolves properties like padding:10px 10px 10px to padding-top:10px;padding-bottom:10px;... |
---|
518 | * @param string $property |
---|
519 | * @param string $value |
---|
520 | * @return array |
---|
521 | * @version 1.0 |
---|
522 | * @see merge_4value_shorthands() |
---|
523 | */ |
---|
524 | function dissolve_4value_shorthands($property, $value) { |
---|
525 | $shorthands = & $GLOBALS['csstidy']['shorthands']; |
---|
526 | if (!is_array($shorthands[$property])) { |
---|
527 | $return[$property] = $value; |
---|
528 | return $return; |
---|
529 | } |
---|
530 | |
---|
531 | $important = ''; |
---|
532 | if (csstidy::is_important($value)) { |
---|
533 | $value = csstidy::gvw_important($value); |
---|
534 | $important = '!important'; |
---|
535 | } |
---|
536 | $values = explode(' ', $value); |
---|
537 | |
---|
538 | |
---|
539 | $return = array(); |
---|
540 | if (count($values) == 4) { |
---|
541 | for ($i = 0; $i < 4; $i++) { |
---|
542 | $return[$shorthands[$property][$i]] = $values[$i] . $important; |
---|
543 | } |
---|
544 | } elseif (count($values) == 3) { |
---|
545 | $return[$shorthands[$property][0]] = $values[0] . $important; |
---|
546 | $return[$shorthands[$property][1]] = $values[1] . $important; |
---|
547 | $return[$shorthands[$property][3]] = $values[1] . $important; |
---|
548 | $return[$shorthands[$property][2]] = $values[2] . $important; |
---|
549 | } elseif (count($values) == 2) { |
---|
550 | for ($i = 0; $i < 4; $i++) { |
---|
551 | $return[$shorthands[$property][$i]] = (($i % 2 != 0)) ? $values[1] . $important : $values[0] . $important; |
---|
552 | } |
---|
553 | } else { |
---|
554 | for ($i = 0; $i < 4; $i++) { |
---|
555 | $return[$shorthands[$property][$i]] = $values[0] . $important; |
---|
556 | } |
---|
557 | } |
---|
558 | |
---|
559 | return $return; |
---|
560 | } |
---|
561 | |
---|
562 | /** |
---|
563 | * Explodes a string as explode() does, however, not if $sep is escaped or within a string. |
---|
564 | * @param string $sep seperator |
---|
565 | * @param string $string |
---|
566 | * @return array |
---|
567 | * @version 1.0 |
---|
568 | */ |
---|
569 | function explode_ws($sep, $string) { |
---|
570 | $status = 'st'; |
---|
571 | $to = ''; |
---|
572 | |
---|
573 | $output = array(); |
---|
574 | $num = 0; |
---|
575 | for ($i = 0, $len = strlen($string); $i < $len; $i++) { |
---|
576 | switch ($status) { |
---|
577 | case 'st': |
---|
578 | if ($string{$i} == $sep && !csstidy::escaped($string, $i)) { |
---|
579 | ++$num; |
---|
580 | } elseif ($string{$i} === '"' || $string{$i} === '\'' || $string{$i} === '(' && !csstidy::escaped($string, $i)) { |
---|
581 | $status = 'str'; |
---|
582 | $to = ($string{$i} === '(') ? ')' : $string{$i}; |
---|
583 | (isset($output[$num])) ? $output[$num] .= $string{$i} : $output[$num] = $string{$i}; |
---|
584 | } else { |
---|
585 | (isset($output[$num])) ? $output[$num] .= $string{$i} : $output[$num] = $string{$i}; |
---|
586 | } |
---|
587 | break; |
---|
588 | |
---|
589 | case 'str': |
---|
590 | if ($string{$i} == $to && !csstidy::escaped($string, $i)) { |
---|
591 | $status = 'st'; |
---|
592 | } |
---|
593 | (isset($output[$num])) ? $output[$num] .= $string{$i} : $output[$num] = $string{$i}; |
---|
594 | break; |
---|
595 | } |
---|
596 | } |
---|
597 | |
---|
598 | if (isset($output[0])) { |
---|
599 | return $output; |
---|
600 | } else { |
---|
601 | return array($output); |
---|
602 | } |
---|
603 | } |
---|
604 | |
---|
605 | /** |
---|
606 | * Merges Shorthand properties again, the opposite of dissolve_4value_shorthands() |
---|
607 | * @param array $array |
---|
608 | * @return array |
---|
609 | * @version 1.2 |
---|
610 | * @see dissolve_4value_shorthands() |
---|
611 | */ |
---|
612 | function merge_4value_shorthands($array) { |
---|
613 | $return = $array; |
---|
614 | $shorthands = & $GLOBALS['csstidy']['shorthands']; |
---|
615 | |
---|
616 | foreach ($shorthands as $key => $value) { |
---|
617 | if (isset($array[$value[0]]) && isset($array[$value[1]]) |
---|
618 | && isset($array[$value[2]]) && isset($array[$value[3]]) && $value !== 0) { |
---|
619 | $return[$key] = ''; |
---|
620 | |
---|
621 | $important = ''; |
---|
622 | for ($i = 0; $i < 4; $i++) { |
---|
623 | $val = $array[$value[$i]]; |
---|
624 | if (csstidy::is_important($val)) { |
---|
625 | $important = '!important'; |
---|
626 | $return[$key] .= csstidy::gvw_important($val) . ' '; |
---|
627 | } else { |
---|
628 | $return[$key] .= $val . ' '; |
---|
629 | } |
---|
630 | unset($return[$value[$i]]); |
---|
631 | } |
---|
632 | $return[$key] = csstidy_optimise::shorthand(trim($return[$key] . $important)); |
---|
633 | } |
---|
634 | } |
---|
635 | return $return; |
---|
636 | } |
---|
637 | |
---|
638 | /** |
---|
639 | * Dissolve background property |
---|
640 | * @param string $str_value |
---|
641 | * @return array |
---|
642 | * @version 1.0 |
---|
643 | * @see merge_bg() |
---|
644 | * @todo full CSS 3 compliance |
---|
645 | */ |
---|
646 | function dissolve_short_bg($str_value) { |
---|
647 | // don't try to explose background gradient ! |
---|
648 | if (stripos($str_value, "gradient(")!==FALSE) |
---|
649 | return array('background'=>$str_value); |
---|
650 | |
---|
651 | $background_prop_default = & $GLOBALS['csstidy']['background_prop_default']; |
---|
652 | $repeat = array('repeat', 'repeat-x', 'repeat-y', 'no-repeat', 'space'); |
---|
653 | $attachment = array('scroll', 'fixed', 'local'); |
---|
654 | $clip = array('border', 'padding'); |
---|
655 | $origin = array('border', 'padding', 'content'); |
---|
656 | $pos = array('top', 'center', 'bottom', 'left', 'right'); |
---|
657 | $important = ''; |
---|
658 | $return = array('background-image' => null, 'background-size' => null, 'background-repeat' => null, 'background-position' => null, 'background-attachment' => null, 'background-clip' => null, 'background-origin' => null, 'background-color' => null); |
---|
659 | |
---|
660 | if (csstidy::is_important($str_value)) { |
---|
661 | $important = ' !important'; |
---|
662 | $str_value = csstidy::gvw_important($str_value); |
---|
663 | } |
---|
664 | |
---|
665 | $str_value = csstidy_optimise::explode_ws(',', $str_value); |
---|
666 | for ($i = 0; $i < count($str_value); $i++) { |
---|
667 | $have['clip'] = false; |
---|
668 | $have['pos'] = false; |
---|
669 | $have['color'] = false; |
---|
670 | $have['bg'] = false; |
---|
671 | |
---|
672 | if (is_array($str_value[$i])) { |
---|
673 | $str_value[$i] = $str_value[$i][0]; |
---|
674 | } |
---|
675 | $str_value[$i] = csstidy_optimise::explode_ws(' ', trim($str_value[$i])); |
---|
676 | |
---|
677 | for ($j = 0; $j < count($str_value[$i]); $j++) { |
---|
678 | if ($have['bg'] === false && (substr($str_value[$i][$j], 0, 4) === 'url(' || $str_value[$i][$j] === 'none')) { |
---|
679 | $return['background-image'] .= $str_value[$i][$j] . ','; |
---|
680 | $have['bg'] = true; |
---|
681 | } elseif (in_array($str_value[$i][$j], $repeat, true)) { |
---|
682 | $return['background-repeat'] .= $str_value[$i][$j] . ','; |
---|
683 | } elseif (in_array($str_value[$i][$j], $attachment, true)) { |
---|
684 | $return['background-attachment'] .= $str_value[$i][$j] . ','; |
---|
685 | } elseif (in_array($str_value[$i][$j], $clip, true) && !$have['clip']) { |
---|
686 | $return['background-clip'] .= $str_value[$i][$j] . ','; |
---|
687 | $have['clip'] = true; |
---|
688 | } elseif (in_array($str_value[$i][$j], $origin, true)) { |
---|
689 | $return['background-origin'] .= $str_value[$i][$j] . ','; |
---|
690 | } elseif ($str_value[$i][$j]{0} === '(') { |
---|
691 | $return['background-size'] .= substr($str_value[$i][$j], 1, -1) . ','; |
---|
692 | } elseif (in_array($str_value[$i][$j], $pos, true) || is_numeric($str_value[$i][$j]{0}) || $str_value[$i][$j]{0} === null || $str_value[$i][$j]{0} === '-' || $str_value[$i][$j]{0} === '.') { |
---|
693 | $return['background-position'] .= $str_value[$i][$j]; |
---|
694 | if (!$have['pos']) |
---|
695 | $return['background-position'] .= ' '; else |
---|
696 | $return['background-position'].= ','; |
---|
697 | $have['pos'] = true; |
---|
698 | } |
---|
699 | elseif (!$have['color']) { |
---|
700 | $return['background-color'] .= $str_value[$i][$j] . ','; |
---|
701 | $have['color'] = true; |
---|
702 | } |
---|
703 | } |
---|
704 | } |
---|
705 | |
---|
706 | foreach ($background_prop_default as $bg_prop => $default_value) { |
---|
707 | if ($return[$bg_prop] !== null) { |
---|
708 | $return[$bg_prop] = substr($return[$bg_prop], 0, -1) . $important; |
---|
709 | } |
---|
710 | else |
---|
711 | $return[$bg_prop] = $default_value . $important; |
---|
712 | } |
---|
713 | return $return; |
---|
714 | } |
---|
715 | |
---|
716 | /** |
---|
717 | * Merges all background properties |
---|
718 | * @param array $input_css |
---|
719 | * @return array |
---|
720 | * @version 1.0 |
---|
721 | * @see dissolve_short_bg() |
---|
722 | * @todo full CSS 3 compliance |
---|
723 | */ |
---|
724 | function merge_bg($input_css) { |
---|
725 | $background_prop_default = & $GLOBALS['csstidy']['background_prop_default']; |
---|
726 | // Max number of background images. CSS3 not yet fully implemented |
---|
727 | $number_of_values = @max(count(csstidy_optimise::explode_ws(',', $input_css['background-image'])), count(csstidy_optimise::explode_ws(',', $input_css['background-color'])), 1); |
---|
728 | // Array with background images to check if BG image exists |
---|
729 | $bg_img_array = @csstidy_optimise::explode_ws(',', csstidy::gvw_important($input_css['background-image'])); |
---|
730 | $new_bg_value = ''; |
---|
731 | $important = ''; |
---|
732 | |
---|
733 | // if background properties is here and not empty, don't try anything |
---|
734 | if (isset($input_css['background']) AND $input_css['background']) |
---|
735 | return $input_css; |
---|
736 | |
---|
737 | for ($i = 0; $i < $number_of_values; $i++) { |
---|
738 | foreach ($background_prop_default as $bg_property => $default_value) { |
---|
739 | // Skip if property does not exist |
---|
740 | if (!isset($input_css[$bg_property])) { |
---|
741 | continue; |
---|
742 | } |
---|
743 | |
---|
744 | $cur_value = $input_css[$bg_property]; |
---|
745 | // skip all optimisation if gradient() somewhere |
---|
746 | if (stripos($cur_value, "gradient(")!==FALSE) |
---|
747 | return $input_css; |
---|
748 | |
---|
749 | // Skip some properties if there is no background image |
---|
750 | if ((!isset($bg_img_array[$i]) || $bg_img_array[$i] === 'none') |
---|
751 | && ($bg_property === 'background-size' || $bg_property === 'background-position' |
---|
752 | || $bg_property === 'background-attachment' || $bg_property === 'background-repeat')) { |
---|
753 | continue; |
---|
754 | } |
---|
755 | |
---|
756 | // Remove !important |
---|
757 | if (csstidy::is_important($cur_value)) { |
---|
758 | $important = ' !important'; |
---|
759 | $cur_value = csstidy::gvw_important($cur_value); |
---|
760 | } |
---|
761 | |
---|
762 | // Do not add default values |
---|
763 | if ($cur_value === $default_value) { |
---|
764 | continue; |
---|
765 | } |
---|
766 | |
---|
767 | $temp = csstidy_optimise::explode_ws(',', $cur_value); |
---|
768 | |
---|
769 | if (isset($temp[$i])) { |
---|
770 | if ($bg_property === 'background-size') { |
---|
771 | $new_bg_value .= '(' . $temp[$i] . ') '; |
---|
772 | } else { |
---|
773 | $new_bg_value .= $temp[$i] . ' '; |
---|
774 | } |
---|
775 | } |
---|
776 | } |
---|
777 | |
---|
778 | $new_bg_value = trim($new_bg_value); |
---|
779 | if ($i != $number_of_values - 1) |
---|
780 | $new_bg_value .= ','; |
---|
781 | } |
---|
782 | |
---|
783 | // Delete all background-properties |
---|
784 | foreach ($background_prop_default as $bg_property => $default_value) { |
---|
785 | unset($input_css[$bg_property]); |
---|
786 | } |
---|
787 | |
---|
788 | // Add new background property |
---|
789 | if ($new_bg_value !== '') |
---|
790 | $input_css['background'] = $new_bg_value . $important; |
---|
791 | elseif(isset ($input_css['background'])) |
---|
792 | $input_css['background'] = 'none'; |
---|
793 | |
---|
794 | return $input_css; |
---|
795 | } |
---|
796 | |
---|
797 | /** |
---|
798 | * Dissolve font property |
---|
799 | * @param string $str_value |
---|
800 | * @return array |
---|
801 | * @version 1.3 |
---|
802 | * @see merge_font() |
---|
803 | */ |
---|
804 | function dissolve_short_font($str_value) { |
---|
805 | $font_prop_default = & $GLOBALS['csstidy']['font_prop_default']; |
---|
806 | $font_weight = array('normal', 'bold', 'bolder', 'lighter', 100, 200, 300, 400, 500, 600, 700, 800, 900); |
---|
807 | $font_variant = array('normal', 'small-caps'); |
---|
808 | $font_style = array('normal', 'italic', 'oblique'); |
---|
809 | $important = ''; |
---|
810 | $return = array('font-style' => null, 'font-variant' => null, 'font-weight' => null, 'font-size' => null, 'line-height' => null, 'font-family' => null); |
---|
811 | |
---|
812 | if (csstidy::is_important($str_value)) { |
---|
813 | $important = '!important'; |
---|
814 | $str_value = csstidy::gvw_important($str_value); |
---|
815 | } |
---|
816 | |
---|
817 | $have['style'] = false; |
---|
818 | $have['variant'] = false; |
---|
819 | $have['weight'] = false; |
---|
820 | $have['size'] = false; |
---|
821 | // Detects if font-family consists of several words w/o quotes |
---|
822 | $multiwords = false; |
---|
823 | |
---|
824 | // Workaround with multiple font-family |
---|
825 | $str_value = csstidy_optimise::explode_ws(',', trim($str_value)); |
---|
826 | |
---|
827 | $str_value[0] = csstidy_optimise::explode_ws(' ', trim($str_value[0])); |
---|
828 | |
---|
829 | for ($j = 0; $j < count($str_value[0]); $j++) { |
---|
830 | if ($have['weight'] === false && in_array($str_value[0][$j], $font_weight)) { |
---|
831 | $return['font-weight'] = $str_value[0][$j]; |
---|
832 | $have['weight'] = true; |
---|
833 | } elseif ($have['variant'] === false && in_array($str_value[0][$j], $font_variant)) { |
---|
834 | $return['font-variant'] = $str_value[0][$j]; |
---|
835 | $have['variant'] = true; |
---|
836 | } elseif ($have['style'] === false && in_array($str_value[0][$j], $font_style)) { |
---|
837 | $return['font-style'] = $str_value[0][$j]; |
---|
838 | $have['style'] = true; |
---|
839 | } elseif ($have['size'] === false && (is_numeric($str_value[0][$j]{0}) || $str_value[0][$j]{0} === null || $str_value[0][$j]{0} === '.')) { |
---|
840 | $size = csstidy_optimise::explode_ws('/', trim($str_value[0][$j])); |
---|
841 | $return['font-size'] = $size[0]; |
---|
842 | if (isset($size[1])) { |
---|
843 | $return['line-height'] = $size[1]; |
---|
844 | } else { |
---|
845 | $return['line-height'] = ''; // don't add 'normal' ! |
---|
846 | } |
---|
847 | $have['size'] = true; |
---|
848 | } else { |
---|
849 | if (isset($return['font-family'])) { |
---|
850 | $return['font-family'] .= ' ' . $str_value[0][$j]; |
---|
851 | $multiwords = true; |
---|
852 | } else { |
---|
853 | $return['font-family'] = $str_value[0][$j]; |
---|
854 | } |
---|
855 | } |
---|
856 | } |
---|
857 | // add quotes if we have several qords in font-family |
---|
858 | if ($multiwords !== false) { |
---|
859 | $return['font-family'] = '"' . $return['font-family'] . '"'; |
---|
860 | } |
---|
861 | $i = 1; |
---|
862 | while (isset($str_value[$i])) { |
---|
863 | $return['font-family'] .= ',' . trim($str_value[$i]); |
---|
864 | $i++; |
---|
865 | } |
---|
866 | |
---|
867 | // Fix for 100 and more font-size |
---|
868 | if ($have['size'] === false && isset($return['font-weight']) && |
---|
869 | is_numeric($return['font-weight']{0})) { |
---|
870 | $return['font-size'] = $return['font-weight']; |
---|
871 | unset($return['font-weight']); |
---|
872 | } |
---|
873 | |
---|
874 | foreach ($font_prop_default as $font_prop => $default_value) { |
---|
875 | if ($return[$font_prop] !== null) { |
---|
876 | $return[$font_prop] = $return[$font_prop] . $important; |
---|
877 | } |
---|
878 | else |
---|
879 | $return[$font_prop] = $default_value . $important; |
---|
880 | } |
---|
881 | return $return; |
---|
882 | } |
---|
883 | |
---|
884 | /** |
---|
885 | * Merges all fonts properties |
---|
886 | * @param array $input_css |
---|
887 | * @return array |
---|
888 | * @version 1.3 |
---|
889 | * @see dissolve_short_font() |
---|
890 | */ |
---|
891 | function merge_font($input_css) { |
---|
892 | $font_prop_default = & $GLOBALS['csstidy']['font_prop_default']; |
---|
893 | $new_font_value = ''; |
---|
894 | $important = ''; |
---|
895 | // Skip if not font-family and font-size set |
---|
896 | if (isset($input_css['font-family']) && isset($input_css['font-size'])) { |
---|
897 | // fix several words in font-family - add quotes |
---|
898 | if (isset($input_css['font-family'])) { |
---|
899 | $families = explode(",", $input_css['font-family']); |
---|
900 | $result_families = array(); |
---|
901 | foreach ($families as $family) { |
---|
902 | $family = trim($family); |
---|
903 | $len = strlen($family); |
---|
904 | if (strpos($family, " ") && |
---|
905 | !(($family{0} == '"' && $family{$len - 1} == '"') || |
---|
906 | ($family{0} == "'" && $family{$len - 1} == "'"))) { |
---|
907 | $family = '"' . $family . '"'; |
---|
908 | } |
---|
909 | $result_families[] = $family; |
---|
910 | } |
---|
911 | $input_css['font-family'] = implode(",", $result_families); |
---|
912 | } |
---|
913 | foreach ($font_prop_default as $font_property => $default_value) { |
---|
914 | |
---|
915 | // Skip if property does not exist |
---|
916 | if (!isset($input_css[$font_property])) { |
---|
917 | continue; |
---|
918 | } |
---|
919 | |
---|
920 | $cur_value = $input_css[$font_property]; |
---|
921 | |
---|
922 | // Skip if default value is used |
---|
923 | if ($cur_value === $default_value) { |
---|
924 | continue; |
---|
925 | } |
---|
926 | |
---|
927 | // Remove !important |
---|
928 | if (csstidy::is_important($cur_value)) { |
---|
929 | $important = '!important'; |
---|
930 | $cur_value = csstidy::gvw_important($cur_value); |
---|
931 | } |
---|
932 | |
---|
933 | $new_font_value .= $cur_value; |
---|
934 | // Add delimiter |
---|
935 | $new_font_value .= ( $font_property === 'font-size' && |
---|
936 | isset($input_css['line-height'])) ? '/' : ' '; |
---|
937 | } |
---|
938 | |
---|
939 | $new_font_value = trim($new_font_value); |
---|
940 | |
---|
941 | // Delete all font-properties |
---|
942 | foreach ($font_prop_default as $font_property => $default_value) { |
---|
943 | if ($font_property!=='font' OR !$new_font_value) |
---|
944 | unset($input_css[$font_property]); |
---|
945 | } |
---|
946 | |
---|
947 | // Add new font property |
---|
948 | if ($new_font_value !== '') { |
---|
949 | $input_css['font'] = $new_font_value . $important; |
---|
950 | } |
---|
951 | } |
---|
952 | |
---|
953 | return $input_css; |
---|
954 | } |
---|
955 | |
---|
956 | } |
---|