1 | <?php |
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2 | |
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3 | /** |
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4 | * Similar to the php for block |
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5 | * <pre> |
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6 | * * name : for name to access it's iterator variables through {$.for.name.var} see {@link http://wiki.dwoo.org/index.php/IteratorVariables} for details |
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7 | * * from : array to iterate from (which equals 0) or a number as a start value |
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8 | * * to : value to stop iterating at (equals count($array) by default if you set an array in from) |
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9 | * * step : defines the incrementation of the pointer at each iteration |
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10 | * </pre> |
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11 | * This software is provided 'as-is', without any express or implied warranty. |
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12 | * In no event will the authors be held liable for any damages arising from the use of this software. |
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13 | * |
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14 | * @author Jordi Boggiano <j.boggiano@seld.be> |
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15 | * @copyright Copyright (c) 2008, Jordi Boggiano |
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16 | * @license http://dwoo.org/LICENSE Modified BSD License |
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17 | * @link http://dwoo.org/ |
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18 | * @version 1.1.0 |
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19 | * @date 2009-07-18 |
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20 | * @package Dwoo |
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21 | */ |
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22 | class Dwoo_Plugin_for extends Dwoo_Block_Plugin implements Dwoo_ICompilable_Block, Dwoo_IElseable |
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23 | { |
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24 | public static $cnt=0; |
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25 | |
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26 | public function init($name, $from, $to=null, $step=1, $skip=0) |
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27 | { |
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28 | } |
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29 | |
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30 | public static function preProcessing(Dwoo_Compiler $compiler, array $params, $prepend, $append, $type) |
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31 | { |
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32 | // get block params and save the current template pointer to use it in the postProcessing method |
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33 | $currentBlock =& $compiler->getCurrentBlock(); |
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34 | $currentBlock['params']['tplPointer'] = $compiler->getPointer(); |
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35 | |
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36 | return ''; |
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37 | } |
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38 | |
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39 | public static function postProcessing(Dwoo_Compiler $compiler, array $params, $prepend, $append, $content) |
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40 | { |
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41 | $params = $compiler->getCompiledParams($params); |
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42 | $tpl = $compiler->getTemplateSource($params['tplPointer']); |
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43 | |
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44 | // assigns params |
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45 | $from = $params['from']; |
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46 | $name = $params['name']; |
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47 | $step = $params['step']; |
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48 | $to = $params['to']; |
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49 | |
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50 | // evaluates which global variables have to be computed |
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51 | $varName = '$dwoo.for.'.trim($name, '"\'').'.'; |
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52 | $shortVarName = '$.for.'.trim($name, '"\'').'.'; |
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53 | $usesAny = strpos($tpl, $varName) !== false || strpos($tpl, $shortVarName) !== false; |
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54 | $usesFirst = strpos($tpl, $varName.'first') !== false || strpos($tpl, $shortVarName.'first') !== false; |
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55 | $usesLast = strpos($tpl, $varName.'last') !== false || strpos($tpl, $shortVarName.'last') !== false; |
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56 | $usesIndex = strpos($tpl, $varName.'index') !== false || strpos($tpl, $shortVarName.'index') !== false; |
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57 | $usesIteration = $usesFirst || $usesLast || strpos($tpl, $varName.'iteration') !== false || strpos($tpl, $shortVarName.'iteration') !== false; |
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58 | $usesShow = strpos($tpl, $varName.'show') !== false || strpos($tpl, $shortVarName.'show') !== false; |
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59 | $usesTotal = $usesLast || strpos($tpl, $varName.'total') !== false || strpos($tpl, $shortVarName.'total') !== false; |
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60 | |
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61 | if (strpos($name, '$this->scope[') !== false) { |
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62 | $usesAny = $usesFirst = $usesLast = $usesIndex = $usesIteration = $usesShow = $usesTotal = true; |
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63 | } |
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64 | |
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65 | // gets foreach id |
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66 | $cnt = self::$cnt++; |
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67 | |
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68 | // builds pre processing output for |
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69 | $out = Dwoo_Compiler::PHP_OPEN . "\n".'$_for'.$cnt.'_from = '.$from.';'. |
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70 | "\n".'$_for'.$cnt.'_to = '.$to.';'. |
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71 | "\n".'$_for'.$cnt.'_step = abs('.$step.');'. |
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72 | "\n".'if (is_numeric($_for'.$cnt.'_from) && !is_numeric($_for'.$cnt.'_to)) { $this->triggerError(\'For requires the <em>to</em> parameter when using a numerical <em>from</em>\'); }'. |
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73 | "\n".'$tmp_shows = $this->isArray($_for'.$cnt.'_from, true) || (is_numeric($_for'.$cnt.'_from) && (abs(($_for'.$cnt.'_from - $_for'.$cnt.'_to)/$_for'.$cnt.'_step) !== 0 || $_for'.$cnt.'_from == $_for'.$cnt.'_to));'; |
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74 | // adds for properties |
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75 | if ($usesAny) { |
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76 | $out .= "\n".'$this->globals["for"]['.$name.'] = array'."\n("; |
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77 | if ($usesIndex) $out .="\n\t".'"index" => 0,'; |
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78 | if ($usesIteration) $out .="\n\t".'"iteration" => 1,'; |
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79 | if ($usesFirst) $out .="\n\t".'"first" => null,'; |
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80 | if ($usesLast) $out .="\n\t".'"last" => null,'; |
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81 | if ($usesShow) $out .="\n\t".'"show" => $tmp_shows,'; |
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82 | if ($usesTotal) $out .="\n\t".'"total" => $this->isArray($_for'.$cnt.'_from) ? floor($this->count($_for'.$cnt.'_from) / $_for'.$cnt.'_step) : (is_numeric($_for'.$cnt.'_from) ? abs(($_for'.$cnt.'_to + 1 - $_for'.$cnt.'_from)/$_for'.$cnt.'_step) : 0),'; |
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83 | $out.="\n);\n".'$_for'.$cnt.'_glob =& $this->globals["for"]['.$name.'];'; |
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84 | } |
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85 | // checks if for must be looped |
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86 | $out .= "\n".'if ($tmp_shows)'."\n{"; |
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87 | // set from/to to correct values if an array was given |
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88 | $out .= "\n\t".'if ($this->isArray($_for'.$cnt.'_from'.(isset($params['hasElse']) ? ', true' : '').') == true) { |
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89 | $_for'.$cnt.'_to = is_numeric($_for'.$cnt.'_to) ? $_for'.$cnt.'_to - $_for'.$cnt.'_step : $this->count($_for'.$cnt.'_from) - 1; |
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90 | $_for'.$cnt.'_from = 0; |
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91 | }'; |
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92 | |
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93 | // if input are pure numbers it shouldn't reorder them, if it's variables it gets too messy though so in that case a counter should be used |
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94 | $reverse = false; |
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95 | $condition = '<='; |
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96 | $incrementer = '+'; |
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97 | |
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98 | if (preg_match('{^(["\']?)([0-9]+)\1$}', $from, $mN1) && preg_match('{^(["\']?)([0-9]+)\1$}', $to, $mN2)) { |
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99 | $from = (int) $mN1[2]; |
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100 | $to = (int) $mN2[2]; |
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101 | if ($from > $to) { |
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102 | $reverse = true; |
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103 | $condition = '>='; |
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104 | $incrementer = '-'; |
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105 | } |
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106 | } |
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107 | |
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108 | // reverse from and to if needed |
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109 | if (!$reverse) { |
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110 | $out .= "\n\t".'if ($_for'.$cnt.'_from > $_for'.$cnt.'_to) { |
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111 | $tmp = $_for'.$cnt.'_from; |
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112 | $_for'.$cnt.'_from = $_for'.$cnt.'_to; |
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113 | $_for'.$cnt.'_to = $tmp; |
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114 | }'; |
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115 | } |
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116 | |
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117 | $out .= "\n\t".'for ($this->scope['.$name.'] = $_for'.$cnt.'_from; $this->scope['.$name.'] '.$condition.' $_for'.$cnt.'_to; $this->scope['.$name.'] '.$incrementer.'= $_for'.$cnt.'_step)'."\n\t{"; |
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118 | // updates properties |
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119 | if ($usesIndex) { |
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120 | $out .="\n\t\t".'$_for'.$cnt.'_glob["index"] = $this->scope['.$name.'];'; |
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121 | } |
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122 | if ($usesFirst) { |
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123 | $out .= "\n\t\t".'$_for'.$cnt.'_glob["first"] = (string) ($_for'.$cnt.'_glob["iteration"] === 1);'; |
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124 | } |
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125 | if ($usesLast) { |
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126 | $out .= "\n\t\t".'$_for'.$cnt.'_glob["last"] = (string) ($_for'.$cnt.'_glob["iteration"] === $_for'.$cnt.'_glob["total"]);'; |
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127 | } |
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128 | $out .= "\n/* -- for start output */\n".Dwoo_Compiler::PHP_CLOSE; |
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129 | |
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130 | |
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131 | // build post processing output and cache it |
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132 | $postOut = Dwoo_Compiler::PHP_OPEN . '/* -- for end output */'; |
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133 | // update properties |
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134 | if ($usesIteration) { |
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135 | $postOut .= "\n\t\t".'$_for'.$cnt.'_glob["iteration"]+=1;'; |
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136 | } |
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137 | // end loop |
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138 | $postOut .= "\n\t}\n}\n".Dwoo_Compiler::PHP_CLOSE; |
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139 | |
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140 | if (isset($params['hasElse'])) { |
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141 | $postOut .= $params['hasElse']; |
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142 | } |
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143 | |
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144 | return $out . $content . $postOut; |
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145 | } |
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146 | } |
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