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First public release of MyAAC
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slawkens1
147
system/libs/dwoo/plugins/builtin/blocks/for.php
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147
system/libs/dwoo/plugins/builtin/blocks/for.php
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<?php
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/**
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* Similar to the php for block
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* <pre>
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* * name : for name to access it's iterator variables through {$.for.name.var} see {@link http://wiki.dwoo.org/index.php/IteratorVariables} for details
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* * from : array to iterate from (which equals 0) or a number as a start value
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* * to : value to stop iterating at (equals count($array) by default if you set an array in from)
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* * step : defines the incrementation of the pointer at each iteration
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* </pre>
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* This software is provided 'as-is', without any express or implied warranty.
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* In no event will the authors be held liable for any damages arising from the use of this software.
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*
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* @author Jordi Boggiano <j.boggiano@seld.be>
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* @copyright Copyright (c) 2008, Jordi Boggiano
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* @license http://dwoo.org/LICENSE Modified BSD License
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* @link http://dwoo.org/
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* @version 1.1.0
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* @date 2009-07-18
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* @package Dwoo
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*/
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class Dwoo_Plugin_for extends Dwoo_Block_Plugin implements Dwoo_ICompilable_Block, Dwoo_IElseable
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{
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public static $cnt=0;
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public function init($name, $from, $to=null, $step=1, $skip=0)
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{
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}
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public static function preProcessing(Dwoo_Compiler $compiler, array $params, $prepend, $append, $type)
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{
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// get block params and save the current template pointer to use it in the postProcessing method
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$currentBlock =& $compiler->getCurrentBlock();
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$currentBlock['params']['tplPointer'] = $compiler->getPointer();
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return '';
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}
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public static function postProcessing(Dwoo_Compiler $compiler, array $params, $prepend, $append, $content)
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{
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$params = $compiler->getCompiledParams($params);
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$tpl = $compiler->getTemplateSource($params['tplPointer']);
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// assigns params
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$from = $params['from'];
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$name = $params['name'];
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$step = $params['step'];
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$to = $params['to'];
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// evaluates which global variables have to be computed
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$varName = '$dwoo.for.'.trim($name, '"\'').'.';
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$shortVarName = '$.for.'.trim($name, '"\'').'.';
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$usesAny = strpos($tpl, $varName) !== false || strpos($tpl, $shortVarName) !== false;
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$usesFirst = strpos($tpl, $varName.'first') !== false || strpos($tpl, $shortVarName.'first') !== false;
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$usesLast = strpos($tpl, $varName.'last') !== false || strpos($tpl, $shortVarName.'last') !== false;
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$usesIndex = strpos($tpl, $varName.'index') !== false || strpos($tpl, $shortVarName.'index') !== false;
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$usesIteration = $usesFirst || $usesLast || strpos($tpl, $varName.'iteration') !== false || strpos($tpl, $shortVarName.'iteration') !== false;
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$usesShow = strpos($tpl, $varName.'show') !== false || strpos($tpl, $shortVarName.'show') !== false;
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$usesTotal = $usesLast || strpos($tpl, $varName.'total') !== false || strpos($tpl, $shortVarName.'total') !== false;
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if (strpos($name, '$this->scope[') !== false) {
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$usesAny = $usesFirst = $usesLast = $usesIndex = $usesIteration = $usesShow = $usesTotal = true;
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}
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// gets foreach id
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$cnt = self::$cnt++;
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// builds pre processing output for
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$out = Dwoo_Compiler::PHP_OPEN . "\n".'$_for'.$cnt.'_from = '.$from.';'.
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"\n".'$_for'.$cnt.'_to = '.$to.';'.
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"\n".'$_for'.$cnt.'_step = abs('.$step.');'.
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"\n".'if (is_numeric($_for'.$cnt.'_from) && !is_numeric($_for'.$cnt.'_to)) { $this->triggerError(\'For requires the <em>to</em> parameter when using a numerical <em>from</em>\'); }'.
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"\n".'$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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// adds foreach properties
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if ($usesAny) {
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$out .= "\n".'$this->globals["for"]['.$name.'] = array'."\n(";
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if ($usesIndex) $out .="\n\t".'"index" => 0,';
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if ($usesIteration) $out .="\n\t".'"iteration" => 1,';
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if ($usesFirst) $out .="\n\t".'"first" => null,';
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if ($usesLast) $out .="\n\t".'"last" => null,';
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if ($usesShow) $out .="\n\t".'"show" => $tmp_shows,';
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if ($usesTotal) $out .="\n\t".'"total" => $this->isArray($_for'.$cnt.'_from) ? floor(count($_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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$out.="\n);\n".'$_for'.$cnt.'_glob =& $this->globals["for"]['.$name.'];';
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}
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// checks if for must be looped
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$out .= "\n".'if ($tmp_shows)'."\n{";
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// set from/to to correct values if an array was given
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$out .= "\n\t".'if ($this->isArray($_for'.$cnt.'_from, true)) {
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$_for'.$cnt.'_to = is_numeric($_for'.$cnt.'_to) ? $_for'.$cnt.'_to - $_for'.$cnt.'_step : count($_for'.$cnt.'_from) - 1;
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$_for'.$cnt.'_from = 0;
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}';
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// 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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$reverse = false;
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$condition = '<=';
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$incrementer = '+';
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if (preg_match('{^(["\']?)([0-9]+)\1$}', $from, $mN1) && preg_match('{^(["\']?)([0-9]+)\1$}', $to, $mN2)) {
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$from = (int) $mN1[2];
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$to = (int) $mN2[2];
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if ($from > $to) {
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$reverse = true;
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$condition = '>=';
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$incrementer = '-';
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}
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}
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// reverse from and to if needed
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if (!$reverse) {
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$out .= "\n\t".'if ($_for'.$cnt.'_from > $_for'.$cnt.'_to) {
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$tmp = $_for'.$cnt.'_from;
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$_for'.$cnt.'_from = $_for'.$cnt.'_to;
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$_for'.$cnt.'_to = $tmp;
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}';
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}
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$out .= '
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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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// updates properties
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if ($usesIndex) {
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$out .="\n\t\t".'$_for'.$cnt.'_glob["index"] = $this->scope['.$name.'];';
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}
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if ($usesFirst) {
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$out .= "\n\t\t".'$_for'.$cnt.'_glob["first"] = (string) ($_for'.$cnt.'_glob["iteration"] === 1);';
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}
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if ($usesLast) {
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$out .= "\n\t\t".'$_for'.$cnt.'_glob["last"] = (string) ($_for'.$cnt.'_glob["iteration"] === $_for'.$cnt.'_glob["total"]);';
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}
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$out .= "\n/* -- for start output */\n".Dwoo_Compiler::PHP_CLOSE;
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// build post processing output and cache it
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$postOut = Dwoo_Compiler::PHP_OPEN . '/* -- for end output */';
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// update properties
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if ($usesIteration) {
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$postOut .= "\n\t\t".'$_for'.$cnt.'_glob["iteration"]+=1;';
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}
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// end loop
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$postOut .= "\n\t}\n}\n".Dwoo_Compiler::PHP_CLOSE;
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if (isset($params['hasElse'])) {
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$postOut .= $params['hasElse'];
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}
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return $out . $content . $postOut;
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}
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}
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