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1 | <?php |
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2 | /** |
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3 | * Copyright (c) 2013-2016 |
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4 | * |
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5 | * @category Library |
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6 | * @package Dwoo\Plugins\Blocks |
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7 | * @author Jordi Boggiano <[email protected]> |
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8 | * @author David Sanchez <[email protected]> |
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9 | * @copyright 2008-2013 Jordi Boggiano |
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10 | * @copyright 2013-2016 David Sanchez |
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11 | * @license http://dwoo.org/LICENSE Modified BSD License |
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12 | * @version 1.3.0 |
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13 | * @date 2016-09-19 |
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14 | * @link http://dwoo.org/ |
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15 | */ |
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16 | |||
17 | namespace Dwoo\Plugins\Blocks; |
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18 | |||
19 | use Dwoo\Compiler; |
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20 | use Dwoo\IElseable; |
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21 | use Dwoo\Block\Plugin as BlockPlugin; |
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22 | use Dwoo\ICompilable\Block as ICompilableBlock; |
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23 | |||
24 | /** |
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25 | * Loops over an array and moves the scope into each value, allowing for shorter loop constructs. |
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26 | * Note that to access the array key within a loop block, you have to use the {$_key} variable, |
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27 | * you can not specify it yourself. |
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28 | * <pre> |
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29 | * * from : the array that you want to iterate over |
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30 | * * name : loop name to access it's iterator variables through {$.loop.name.var} see {@link |
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31 | * http://wiki.dwoo.org/index.php/IteratorVariables} for details |
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32 | * </pre> |
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33 | * Example : |
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34 | * instead of a foreach block such as : |
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35 | * <code> |
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36 | * {foreach $variable value} |
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37 | * {$value.foo} {$value.bar} |
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38 | * {/foreach} |
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39 | * </code> |
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40 | * you can do : |
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41 | * <code> |
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42 | * {loop $variable} |
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43 | * {$foo} {$bar} |
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44 | * {/loop} |
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45 | * </code> |
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46 | * This software is provided 'as-is', without any express or implied warranty. |
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47 | * In no event will the authors be held liable for any damages arising from the use of this software. |
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48 | */ |
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49 | class PluginLoop extends BlockPlugin implements ICompilableBlock, IElseable |
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50 | { |
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51 | public static $cnt = 0; |
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52 | |||
53 | /** |
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54 | * @param $from |
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55 | * @param string $name |
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56 | */ |
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57 | public function init($from, $name = 'default') |
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58 | { |
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59 | } |
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60 | |||
61 | /** |
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62 | * @param Compiler $compiler |
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63 | * @param array $params |
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64 | * @param string $prepend |
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65 | * @param string $append |
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66 | * @param string $type |
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67 | * |
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68 | * @return string |
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69 | */ |
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70 | public static function preProcessing(Compiler $compiler, array $params, $prepend, $append, $type) |
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71 | { |
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72 | // get block params and save the current template pointer to use it in the postProcessing method |
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73 | $currentBlock = &$compiler->getCurrentBlock(); |
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74 | $currentBlock['params']['tplPointer'] = $compiler->getPointer(); |
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75 | |||
76 | return ''; |
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77 | } |
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78 | |||
79 | /** |
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80 | * @param Compiler $compiler |
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81 | * @param array $params |
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82 | * @param string $prepend |
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83 | * @param string $append |
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84 | * @param string $content |
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85 | * |
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86 | * @return string |
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87 | */ |
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88 | public static function postProcessing(Compiler $compiler, array $params, $prepend, $append, $content) |
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89 | { |
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90 | $params = $compiler->getCompiledParams($params); |
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91 | $tpl = $compiler->getTemplateSource($params['tplPointer']); |
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92 | |||
93 | // assigns params |
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94 | $src = $params['from']; |
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95 | $name = $params['name']; |
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96 | |||
97 | // evaluates which global variables have to be computed |
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98 | $varName = '$dwoo.loop.' . trim($name, '"\'') . '.'; |
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99 | $shortVarName = '$.loop.' . trim($name, '"\'') . '.'; |
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100 | $usesAny = strpos($tpl, $varName) !== false || strpos($tpl, $shortVarName) !== false; |
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101 | $usesFirst = strpos($tpl, $varName . 'first') !== false || strpos($tpl, $shortVarName . 'first') !== false; |
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102 | $usesLast = strpos($tpl, $varName . 'last') !== false || strpos($tpl, $shortVarName . 'last') !== false; |
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103 | $usesIndex = $usesFirst || strpos($tpl, $varName . 'index') !== false || strpos($tpl, $shortVarName . 'index') !== false; |
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104 | $usesIteration = $usesLast || strpos($tpl, $varName . 'iteration') !== false || strpos($tpl, $shortVarName . 'iteration') !== false; |
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105 | $usesShow = strpos($tpl, $varName . 'show') !== false || strpos($tpl, $shortVarName . 'show') !== false; |
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106 | $usesTotal = $usesLast || strpos($tpl, $varName . 'total') !== false || strpos($tpl, $shortVarName . 'total') !== false; |
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107 | |||
108 | View Code Duplication | if (strpos($name, '$this->scope[') !== false) { |
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109 | $usesAny = $usesFirst = $usesLast = $usesIndex = $usesIteration = $usesShow = $usesTotal = true; |
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110 | } |
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111 | |||
112 | // gets foreach id |
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113 | $cnt = self::$cnt ++; |
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114 | |||
115 | // builds pre processing output |
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116 | $pre = Compiler::PHP_OPEN . "\n" . '$_loop' . $cnt . '_data = ' . $src . ';'; |
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117 | // adds foreach properties |
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118 | View Code Duplication | if ($usesAny) { |
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119 | $pre .= "\n" . '$this->globals["loop"][' . $name . '] = array' . "\n("; |
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120 | if ($usesIndex) { |
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121 | $pre .= "\n\t" . '"index" => 0,'; |
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122 | } |
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123 | if ($usesIteration) { |
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124 | $pre .= "\n\t" . '"iteration" => 1,'; |
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125 | } |
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126 | if ($usesFirst) { |
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127 | $pre .= "\n\t" . '"first" => null,'; |
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128 | } |
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129 | if ($usesLast) { |
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130 | $pre .= "\n\t" . '"last" => null,'; |
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131 | } |
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132 | if ($usesShow) { |
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133 | $pre .= "\n\t" . '"show" => $this->isTraversable($_loop' . $cnt . '_data, true),'; |
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134 | } |
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135 | if ($usesTotal) { |
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136 | $pre .= "\n\t" . '"total" => $this->count($_loop' . $cnt . '_data),'; |
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137 | } |
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138 | $pre .= "\n);\n" . '$_loop' . $cnt . '_glob =& $this->globals["loop"][' . $name . '];'; |
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139 | } |
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140 | // checks if the loop must be looped |
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141 | $pre .= "\n" . 'if ($this->isTraversable($_loop' . $cnt . '_data' . (isset($params['hasElse']) ? ', true' : '') . ') == true)' . "\n{"; |
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142 | // iterates over keys |
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143 | $pre .= "\n\t" . 'foreach ($_loop' . $cnt . '_data as $tmp_key => $this->scope["-loop-"])' . "\n\t{"; |
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144 | // updates properties |
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145 | if ($usesFirst) { |
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146 | $pre .= "\n\t\t" . '$_loop' . $cnt . '_glob["first"] = (string) ($_loop' . $cnt . '_glob["index"] === 0);'; |
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147 | } |
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148 | View Code Duplication | if ($usesLast) { |
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149 | $pre .= "\n\t\t" . '$_loop' . $cnt . '_glob["last"] = (string) ($_loop' . $cnt . '_glob["iteration"] === $_loop' . $cnt . '_glob["total"]);'; |
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150 | } |
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151 | $pre .= "\n\t\t" . '$_loop' . $cnt . '_scope = $this->setScope(array("-loop-"));' . "\n/* -- loop start output */\n" . Compiler::PHP_CLOSE; |
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152 | |||
153 | // build post processing output and cache it |
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154 | $post = Compiler::PHP_OPEN . "\n" . '/* -- loop end output */' . "\n\t\t" . '$this->setScope($_loop' . $cnt . '_scope, true);'; |
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155 | // update properties |
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156 | if ($usesIndex) { |
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157 | $post .= "\n\t\t" . '$_loop' . $cnt . '_glob["index"]+=1;'; |
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158 | } |
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159 | if ($usesIteration) { |
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160 | $post .= "\n\t\t" . '$_loop' . $cnt . '_glob["iteration"]+=1;'; |
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161 | } |
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162 | // end loop |
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163 | $post .= "\n\t}\n}\n" . Compiler::PHP_CLOSE; |
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164 | if (isset($params['hasElse'])) { |
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165 | $post .= $params['hasElse']; |
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166 | } |
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167 | |||
168 | return $pre . $content . $post; |
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169 | } |
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170 | } |
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171 |
This check looks from parameters that have been defined for a function or method, but which are not used in the method body.