library/smarty/libs/sysplugins/smarty_internal_compile_foreach.php
author Markus Bröker <broeker.markus@googlemail.com>
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<?php
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/**
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 * Smarty Internal Plugin Compile Foreach
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 * Compiles the {foreach} {foreachelse} {/foreach} tags
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 *
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 * @package    Smarty
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 * @subpackage Compiler
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 * @author     Uwe Tews
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 */
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/**
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 * Smarty Internal Plugin Compile Foreach Class
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 *
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 * @package    Smarty
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 * @subpackage Compiler
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 */
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class Smarty_Internal_Compile_Foreach extends Smarty_Internal_CompileBase {
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    /**
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     * Attribute definition: Overwrites base class.
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     *
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     * @var array
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     * @see Smarty_Internal_CompileBase
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     */
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    public $required_attributes = array('from', 'item');
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    /**
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     * Attribute definition: Overwrites base class.
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     *
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     * @var array
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     * @see Smarty_Internal_CompileBase
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     */
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    public $optional_attributes = array('name', 'key');
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    /**
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     * Attribute definition: Overwrites base class.
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     *
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     * @var array
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     * @see Smarty_Internal_CompileBase
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     */
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    public $shorttag_order = array('from', 'item', 'key', 'name');
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    /**
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     * Compiles code for the {foreach} tag
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     *
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     * @param  array $args array with attributes from parser
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     * @param  object $compiler compiler object
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     * @param  array $parameter array with compilation parameter
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     *
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     * @return string compiled code
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     */
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    public function compile($args, $compiler, $parameter) {
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        // check and get attributes
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        $_attr = $this->getAttributes($compiler, $args);
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        $from = $_attr['from'];
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        $item = $_attr['item'];
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        if (!strncmp("\$_smarty_tpl->tpl_vars[$item]", $from, strlen($item) + 24)) {
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            $compiler->trigger_template_error("item variable {$item} may not be the same variable as at 'from'", $compiler->lex->taglineno);
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        }
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        if (isset($_attr['key'])) {
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            $key = $_attr['key'];
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        } else {
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            $key = null;
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        }
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        $this->openTag($compiler, 'foreach', array('foreach', $compiler->nocache, $item, $key, true));
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        // maybe nocache because of nocache variables
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        $compiler->nocache = $compiler->nocache | $compiler->tag_nocache;
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        if (isset($_attr['name'])) {
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            $name = trim($_attr['name'], '\'"');
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            $has_name = true;
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            $SmartyVarName = "\$smarty.foreach.{$name}.";
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        } else {
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            $has_name = false;
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        }
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        $ItemVarName = '$' . trim($item, '\'"') . '@';
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        // evaluates which Smarty variables and properties have to be computed
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        if ($has_name) {
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            $useSmartyForeach = $usesSmartyFirst = strpos($compiler->lex->data, $SmartyVarName . 'first') !== false;
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            $useSmartyForeach = ($usesSmartyLast = strpos($compiler->lex->data, $SmartyVarName . 'last') !== false) || $useSmartyForeach;
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            $useSmartyForeach = ($usesSmartyIndex = strpos($compiler->lex->data, $SmartyVarName . 'index') !== false) || $useSmartyForeach;
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            $useSmartyForeach = ($usesSmartyIteration = (!$usesSmartyIndex && ($usesSmartyFirst || $usesSmartyLast)) || strpos($compiler->lex->data, $SmartyVarName . 'iteration') !== false) || $useSmartyForeach;
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            $useSmartyForeach = ($usesSmartyShow = strpos($compiler->lex->data, $SmartyVarName . 'show') !== false) || $useSmartyForeach;
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            $useSmartyForeach = ($usesSmartyTotal = $usesSmartyLast || strpos($compiler->lex->data, $SmartyVarName . 'total') !== false) || $useSmartyForeach;
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        } else {
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            $usesSmartyFirst = false;
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            $usesSmartyLast = false;
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            $usesSmartyTotal = false;
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            $usesSmartyShow = false;
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            $useSmartyForeach = false;
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        }
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        $usesPropKey = strpos($compiler->lex->data, $ItemVarName . 'key') !== false;
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        $usesPropFirst = strpos($compiler->lex->data, $ItemVarName . 'first') !== false;
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        $usesPropLast = strpos($compiler->lex->data, $ItemVarName . 'last') !== false;
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        $usesPropIndex = strpos($compiler->lex->data, $ItemVarName . 'index') !== false;
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        $usesPropIteration = (!$usesPropIndex && ($usesPropFirst || $usesPropLast)) || strpos($compiler->lex->data, $ItemVarName . 'iteration') !== false;
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        $usesPropShow = strpos($compiler->lex->data, $ItemVarName . 'show') !== false;
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        $usesPropTotal = $usesPropLast || strpos($compiler->lex->data, $ItemVarName . 'total') !== false;
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        $keyTerm = '';
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        if ($usesPropKey) {
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            $keyTerm = "\$_smarty_tpl->tpl_vars[$item]->key => ";
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        } elseif ($key != null) {
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            $keyTerm = "\$_smarty_tpl->tpl_vars[$key]->value => ";
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        }
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        // generate output code
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        $output = "<?php\n";
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        $output .= "\$_from = $from;\n";
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        $output .= "if (!is_array(\$_from) && !is_object(\$_from)) {\n";
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        $output .= "settype(\$_from, 'array');\n";
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        $output .= "}\n";
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        $output .= "\$_smarty_tpl->tpl_vars[$item] = new Smarty_Variable;\n";
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        $output .= "\$_smarty_tpl->tpl_vars[$item]->_loop = false;\n";
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        if ($key != null) {
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            $output .= "\$_smarty_tpl->tpl_vars[$key] = new Smarty_Variable;\n";
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        }
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        if ($usesPropTotal) {
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            $output .= "\$_smarty_tpl->tpl_vars[$item]->total= \$_smarty_tpl->_count(\$_from);\n";
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        }
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        if ($usesPropIteration) {
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            $output .= "\$_smarty_tpl->tpl_vars[$item]->iteration=0;\n";
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        }
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        if ($usesPropIndex) {
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            $output .= "\$_smarty_tpl->tpl_vars[$item]->index=-1;\n";
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        }
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        if ($usesPropShow) {
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            if ($usesPropTotal) {
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                $output .= "\$_smarty_tpl->tpl_vars[$item]->show = (\$_smarty_tpl->tpl_vars[$item]->total > 0);\n";
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            } else {
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                $output .= "\$_smarty_tpl->tpl_vars[$item]->show = (\$_smarty_tpl->_count(\$_from) > 0);\n";
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            }
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        }
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        if ($has_name) {
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            $prop = array();
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            if ($usesSmartyTotal) {
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                $prop['total'] = "'total' => ";
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                $prop['total'] .= $usesSmartyShow ? '$total = ' : '';
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                $prop['total'] .= '$_smarty_tpl->_count($_from)';
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            }
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            if ($usesSmartyIteration) {
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                $prop['iteration'] = "'iteration' => 0";
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            }
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            if ($usesSmartyIndex) {
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                $prop['index'] = "'index' => -1";
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            }
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            if ($usesSmartyShow) {
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                $prop['show'] = "'show' => ";
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                if ($usesSmartyTotal) {
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                    $prop['show'] .= "(\$total > 0)";
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                } else {
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                    $prop['show'] .= "(\$_smarty_tpl->_count(\$_from) > 0)";
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                }
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            }
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            if ($useSmartyForeach) {
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                $_vars = 'array(' . join(', ', $prop) . ')';
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                $foreachVar = "'__foreach_{$name}'";
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                $output .= "\$_smarty_tpl->tpl_vars[$foreachVar] = new Smarty_Variable({$_vars});\n";
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            }
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        }
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        $output .= "foreach (\$_from as {$keyTerm}\$_smarty_tpl->tpl_vars[$item]->value) {\n";
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        $output .= "\$_smarty_tpl->tpl_vars[$item]->_loop = true;\n";
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        if ($key != null && $usesPropKey) {
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            $output .= "\$_smarty_tpl->tpl_vars[$key]->value = \$_smarty_tpl->tpl_vars[$item]->key;\n";
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        }
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        if ($usesPropIteration) {
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            $output .= "\$_smarty_tpl->tpl_vars[$item]->iteration++;\n";
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        }
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        if ($usesPropIndex) {
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            $output .= "\$_smarty_tpl->tpl_vars[$item]->index++;\n";
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        }
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        if ($usesPropFirst) {
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            if ($usesPropIndex) {
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                $output .= "\$_smarty_tpl->tpl_vars[$item]->first = \$_smarty_tpl->tpl_vars[$item]->index == 0;\n";
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            } else {
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                $output .= "\$_smarty_tpl->tpl_vars[$item]->first = \$_smarty_tpl->tpl_vars[$item]->iteration == 1;\n";
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            }
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        }
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        if ($usesPropLast) {
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            if ($usesPropIndex) {
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                $output .= "\$_smarty_tpl->tpl_vars[$item]->last = \$_smarty_tpl->tpl_vars[$item]->index + 1 == \$_smarty_tpl->tpl_vars[$item]->total;\n";
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            } else {
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                $output .= "\$_smarty_tpl->tpl_vars[$item]->last = \$_smarty_tpl->tpl_vars[$item]->iteration == \$_smarty_tpl->tpl_vars[$item]->total;\n";
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            }
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        }
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        if ($has_name) {
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            if ($usesSmartyIteration) {
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                $output .= "\$_smarty_tpl->tpl_vars[$foreachVar]->value['iteration']++;\n";
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            }
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   191
            if ($usesSmartyIndex) {
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                $output .= "\$_smarty_tpl->tpl_vars[$foreachVar]->value['index']++;\n";
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   193
            }
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   194
            if ($usesSmartyFirst) {
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   195
                if ($usesSmartyIndex) {
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                    $output .= "\$_smarty_tpl->tpl_vars[$foreachVar]->value['first'] = \$_smarty_tpl->tpl_vars[$foreachVar]->value['index'] == 0;\n";
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                } else {
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                    $output .= "\$_smarty_tpl->tpl_vars[$foreachVar]->value['first'] = \$_smarty_tpl->tpl_vars[$foreachVar]->value['iteration'] == 1;\n";
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                }
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            }
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   201
            if ($usesSmartyLast) {
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   202
                if ($usesSmartyIndex) {
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                    $output .= "\$_smarty_tpl->tpl_vars[$foreachVar]->value['last'] = \$_smarty_tpl->tpl_vars[$foreachVar]->value['index'] + 1 == \$_smarty_tpl->tpl_vars[$foreachVar]->value['total'];\n";
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   204
                } else {
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                    $output .= "\$_smarty_tpl->tpl_vars[$foreachVar]->value['last'] = \$_smarty_tpl->tpl_vars[$foreachVar]->value['iteration'] == \$_smarty_tpl->tpl_vars[$foreachVar]->value['total'];\n";
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   206
                }
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            }
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   208
        }
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        $itemName = trim($item, "'\"");
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   210
        $output .= "\$foreach_{$itemName}_Sav = \$_smarty_tpl->tpl_vars[$item];\n";
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   211
        $output .= "?>";
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   212
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   213
        return $output;
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diff changeset
   214
    }
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   215
}
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   216
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/**
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 * Smarty Internal Plugin Compile Foreachelse Class
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 *
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 * @package    Smarty
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   221
 * @subpackage Compiler
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 */
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class Smarty_Internal_Compile_Foreachelse extends Smarty_Internal_CompileBase {
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   224
    /**
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     * Compiles code for the {foreachelse} tag
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diff changeset
   226
     *
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     * @param  array $args array with attributes from parser
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     * @param  object $compiler compiler object
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     * @param  array $parameter array with compilation parameter
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   230
     *
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   231
     * @return string compiled code
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   232
     */
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    public function compile($args, $compiler, $parameter) {
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   234
        // check and get attributes
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diff changeset
   235
        $_attr = $this->getAttributes($compiler, $args);
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diff changeset
   236
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   237
        list($openTag, $nocache, $item, $key, $foo) = $this->closeTag($compiler, array('foreach'));
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   238
        $this->openTag($compiler, 'foreachelse', array('foreachelse', $nocache, $item, $key, false));
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   239
        $itemName = trim($item, "'\"");
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diff changeset
   240
        $output = "<?php\n";
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diff changeset
   241
        $output .= "\$_smarty_tpl->tpl_vars[$item] = \$foreach_{$itemName}_Sav;\n";
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   242
        $output .= "}\n";
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diff changeset
   243
        $output .= "if (!\$_smarty_tpl->tpl_vars[$item]->_loop) {\n?>";
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   244
        return $output;
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diff changeset
   245
    }
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diff changeset
   246
}
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   247
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   248
/**
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diff changeset
   249
 * Smarty Internal Plugin Compile Foreachclose Class
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diff changeset
   250
 *
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   251
 * @package    Smarty
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 * @subpackage Compiler
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diff changeset
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 */
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class Smarty_Internal_Compile_Foreachclose extends Smarty_Internal_CompileBase {
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parents:
diff changeset
   255
    /**
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   256
     * Compiles code for the {/foreach} tag
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     *
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     * @param  array $args array with attributes from parser
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     * @param  object $compiler compiler object
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     * @param  array $parameter array with compilation parameter
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     *
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     * @return string compiled code
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     */
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    public function compile($args, $compiler, $parameter) {
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        // check and get attributes
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        $_attr = $this->getAttributes($compiler, $args);
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        // must endblock be nocache?
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        if ($compiler->nocache) {
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            $compiler->tag_nocache = true;
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        }
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        list($openTag, $compiler->nocache, $item, $key, $restore) = $this->closeTag($compiler, array('foreach', 'foreachelse'));
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        $itemName = trim($item, "'\"");
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        $output = "<?php\n";
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        if ($restore) {
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            $output .= "\$_smarty_tpl->tpl_vars[$item] = \$foreach_{$itemName}_Sav;\n";
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        }
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        $output .= "}\n?>";
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        return $output;
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    }
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}