1 | <?php |
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2 | |
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3 | /* |
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4 | * This file is part of the Assetic package, an OpenSky project. |
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5 | * |
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6 | * (c) 2010-2012 OpenSky Project Inc |
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7 | * |
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8 | * For the full copyright and license information, please view the LICENSE |
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9 | * file that was distributed with this source code. |
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10 | */ |
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11 | |
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12 | namespace Assetic\Extension\Twig; |
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13 | |
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14 | use Assetic\Asset\AssetInterface; |
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15 | |
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16 | class AsseticNode extends \Twig_Node |
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17 | { |
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18 | /** |
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19 | * Constructor. |
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20 | * |
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21 | * Available attributes: |
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22 | * |
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23 | * * debug: The debug mode |
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24 | * * combine: Whether to combine assets |
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25 | * * var_name: The name of the variable to expose to the body node |
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26 | * |
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27 | * @param AssetInterface $asset The asset |
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28 | * @param \Twig_NodeInterface $body The body node |
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29 | * @param array $inputs An array of input strings |
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30 | * @param array $filters An array of filter strings |
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31 | * @param string $name The name of the asset |
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32 | * @param array $attributes An array of attributes |
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33 | * @param integer $lineno The line number |
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34 | * @param string $tag The tag name |
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35 | */ |
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36 | public function __construct(AssetInterface $asset, \Twig_NodeInterface $body, array $inputs, array $filters, $name, array $attributes = array(), $lineno = 0, $tag = null) |
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37 | { |
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38 | $nodes = array('body' => $body); |
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39 | |
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40 | $attributes = array_replace( |
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41 | array('debug' => null, 'combine' => null, 'var_name' => 'asset_url'), |
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42 | $attributes, |
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43 | array('asset' => $asset, 'inputs' => $inputs, 'filters' => $filters, 'name' => $name) |
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44 | ); |
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45 | |
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46 | parent::__construct($nodes, $attributes, $lineno, $tag); |
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47 | } |
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48 | |
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49 | public function compile(\Twig_Compiler $compiler) |
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50 | { |
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51 | $compiler->addDebugInfo($this); |
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52 | |
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53 | $combine = $this->getAttribute('combine'); |
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54 | $debug = $this->getAttribute('debug'); |
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55 | |
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56 | if (null === $combine && null !== $debug) { |
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57 | $combine = !$debug; |
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58 | } |
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59 | |
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60 | if (null === $combine) { |
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61 | $compiler |
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62 | ->write("if (isset(\$context['assetic']['debug']) && \$context['assetic']['debug']) {\n") |
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63 | ->indent() |
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64 | ; |
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65 | |
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66 | $this->compileDebug($compiler); |
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67 | |
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68 | $compiler |
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69 | ->outdent() |
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70 | ->write("} else {\n") |
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71 | ->indent() |
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72 | ; |
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73 | |
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74 | $this->compileAsset($compiler, $this->getAttribute('asset'), $this->getAttribute('name')); |
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75 | |
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76 | $compiler |
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77 | ->outdent() |
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78 | ->write("}\n") |
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79 | ; |
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80 | } elseif ($combine) { |
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81 | $this->compileAsset($compiler, $this->getAttribute('asset'), $this->getAttribute('name')); |
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82 | } else { |
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83 | $this->compileDebug($compiler); |
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84 | } |
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85 | |
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86 | $compiler |
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87 | ->write('unset($context[') |
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88 | ->repr($this->getAttribute('var_name')) |
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89 | ->raw("]);\n") |
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90 | ; |
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91 | } |
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92 | |
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93 | protected function compileDebug(\Twig_Compiler $compiler) |
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94 | { |
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95 | $i = 0; |
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96 | foreach ($this->getAttribute('asset') as $leaf) { |
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97 | $leafName = $this->getAttribute('name').'_'.$i++; |
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98 | $this->compileAsset($compiler, $leaf, $leafName); |
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99 | } |
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100 | } |
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101 | |
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102 | protected function compileAsset(\Twig_Compiler $compiler, AssetInterface $asset, $name) |
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103 | { |
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104 | if ($vars = $asset->getVars()) { |
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105 | $compiler->write("// check variable conditions\n"); |
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106 | |
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107 | foreach ($vars as $var) { |
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108 | $compiler |
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109 | ->write("if (!isset(\$context['assetic']['vars']['$var'])) {\n") |
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110 | ->indent() |
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111 | ->write("throw new \RuntimeException(sprintf('The asset \"".$name."\" expected variable \"".$var."\" to be set, but got only these vars: %s. Did you set-up a value supplier?', isset(\$context['assetic']['vars']) && \$context['assetic']['vars'] ? implode(', ', \$context['assetic']['vars']) : '# none #'));\n") |
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112 | ->outdent() |
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113 | ->write("}\n") |
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114 | ; |
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115 | } |
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116 | |
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117 | $compiler->raw("\n"); |
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118 | } |
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119 | |
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120 | $compiler |
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121 | ->write("// asset \"$name\"\n") |
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122 | ->write('$context[') |
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123 | ->repr($this->getAttribute('var_name')) |
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124 | ->raw('] = ') |
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125 | ; |
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126 | |
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127 | $this->compileAssetUrl($compiler, $asset, $name); |
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128 | |
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129 | $compiler |
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130 | ->raw(";\n") |
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131 | ->subcompile($this->getNode('body')) |
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132 | ; |
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133 | } |
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134 | |
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135 | protected function compileAssetUrl(\Twig_Compiler $compiler, AssetInterface $asset, $name) |
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136 | { |
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137 | if (!$vars = $asset->getVars()) { |
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138 | $compiler->repr($asset->getTargetPath()); |
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139 | |
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140 | return; |
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141 | } |
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142 | |
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143 | $compiler |
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144 | ->raw("strtr(") |
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145 | ->string($asset->getTargetPath()) |
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146 | ->raw(", array("); |
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147 | ; |
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148 | |
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149 | $first = true; |
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150 | foreach ($vars as $var) { |
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151 | if (!$first) { |
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152 | $compiler->raw(", "); |
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153 | } |
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154 | $first = false; |
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155 | |
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156 | $compiler |
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157 | ->string("{".$var."}") |
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158 | ->raw(" => \$context['assetic']['vars']['$var']") |
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159 | ; |
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160 | } |
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161 | |
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162 | $compiler |
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163 | ->raw("))") |
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164 | ; |
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165 | } |
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166 | } |
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