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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_Compile_Private_ForeachSection |
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{ |
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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', 'properties'); |
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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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* counter |
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* |
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* @var int |
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*/ |
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public $counter = 0; |
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/** |
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* Name of this tag |
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* |
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* @var string |
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*/ |
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public $tagName = 'foreach'; |
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/** |
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* Valid properties of $smarty.foreach.name.xxx variable |
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* |
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* @var array |
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*/ |
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public $nameProperties = array('first', 'last', 'index', 'iteration', 'show', 'total'); |
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/** |
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* Valid properties of $item@xxx variable |
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* |
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* @var array |
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*/ |
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public $itemProperties = array('first', 'last', 'index', 'iteration', 'show', 'total', 'key'); |
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/** |
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* Flag if tag had name attribute |
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* |
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* @var bool |
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*/ |
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public $isNamed = false; |
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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 \Smarty_Internal_TemplateCompilerBase $compiler compiler object |
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* |
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* @return string compiled code |
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* @throws \SmartyCompilerException |
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* @throws \SmartyException |
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*/ |
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public function compile($args, Smarty_Internal_TemplateCompilerBase $compiler) |
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{ |
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$compiler->loopNesting++; |
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// init |
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$this->isNamed = false; |
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// check and get attributes |
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$_attr = $this->getAttributes($compiler, $args); |
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$from = $_attr[ 'from' ]; |
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$item = $compiler->getId($_attr[ 'item' ]); |
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if ($item === false) { |
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$item = $compiler->getVariableName($_attr[ 'item' ]); |
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} |
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$key = $name = null; |
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$attributes = array('item' => $item); |
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if (isset($_attr[ 'key' ])) { |
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$key = $compiler->getId($_attr[ 'key' ]); |
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if ($key === false) { |
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$key = $compiler->getVariableName($_attr[ 'key' ]); |
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} |
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$attributes[ 'key' ] = $key; |
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} |
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if (isset($_attr[ 'name' ])) { |
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$this->isNamed = true; |
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$name = $attributes[ 'name' ] = $compiler->getId($_attr[ 'name' ]); |
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} |
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foreach ($attributes as $a => $v) { |
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if ($v === false) { |
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$compiler->trigger_template_error("'{$a}' attribute/variable has illegal value", null, true); |
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} |
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} |
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$fromName = $compiler->getVariableName($_attr[ 'from' ]); |
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if ($fromName) { |
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foreach (array('item', 'key') as $a) { |
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if (isset($attributes[ $a ]) && $attributes[ $a ] === $fromName) { |
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$compiler->trigger_template_error( |
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"'{$a}' and 'from' may not have same variable name '{$fromName}'", |
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null, |
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true |
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); |
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} |
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} |
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} |
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$itemVar = "\$_smarty_tpl->tpl_vars['{$item}']"; |
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$local = '$__foreach_' . $attributes[ 'item' ] . '_' . $this->counter++ . '_'; |
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// search for used tag attributes |
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$itemAttr = array(); |
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$namedAttr = array(); |
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$this->scanForProperties($attributes, $compiler); |
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if (!empty($this->matchResults[ 'item' ])) { |
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$itemAttr = $this->matchResults[ 'item' ]; |
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} |
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if (!empty($this->matchResults[ 'named' ])) { |
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$namedAttr = $this->matchResults[ 'named' ]; |
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} |
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if (isset($_attr[ 'properties' ]) && preg_match_all('/[\'](.*?)[\']/', $_attr[ 'properties' ], $match)) { |
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foreach ($match[ 1 ] as $prop) { |
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if (in_array($prop, $this->itemProperties)) { |
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$itemAttr[ $prop ] = true; |
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} else { |
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$compiler->trigger_template_error("Invalid property '{$prop}'", null, true); |
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} |
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} |
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if ($this->isNamed) { |
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foreach ($match[ 1 ] as $prop) { |
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if (in_array($prop, $this->nameProperties)) { |
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$nameAttr[ $prop ] = true; |
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} else { |
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$compiler->trigger_template_error("Invalid property '{$prop}'", null, true); |
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} |
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} |
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} |
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} |
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if (isset($itemAttr[ 'first' ])) { |
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$itemAttr[ 'index' ] = true; |
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} |
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if (isset($namedAttr[ 'first' ])) { |
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$namedAttr[ 'index' ] = true; |
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} |
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if (isset($namedAttr[ 'last' ])) { |
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$namedAttr[ 'iteration' ] = true; |
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$namedAttr[ 'total' ] = true; |
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} |
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if (isset($itemAttr[ 'last' ])) { |
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$itemAttr[ 'iteration' ] = true; |
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$itemAttr[ 'total' ] = true; |
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} |
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if (isset($namedAttr[ 'show' ])) { |
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$namedAttr[ 'total' ] = true; |
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} |
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if (isset($itemAttr[ 'show' ])) { |
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$itemAttr[ 'total' ] = true; |
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} |
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$keyTerm = ''; |
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if (isset($attributes[ 'key' ])) { |
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$keyTerm = "\$_smarty_tpl->tpl_vars['{$key}']->value => "; |
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} |
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if (isset($itemAttr[ 'key' ])) { |
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$keyTerm = "{$itemVar}->key => "; |
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} |
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if ($this->isNamed) { |
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$foreachVar = "\$_smarty_tpl->tpl_vars['__smarty_foreach_{$attributes['name']}']"; |
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} |
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$needTotal = isset($itemAttr[ 'total' ]); |
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// Register tag |
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$this->openTag( |
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$compiler, |
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'foreach', |
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array('foreach', $compiler->nocache, $local, $itemVar, empty($itemAttr) ? 1 : 2) |
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); |
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// maybe nocache because of nocache variables |
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$compiler->nocache = $compiler->nocache | $compiler->tag_nocache; |
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// generate output code |
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$output = "<?php\n"; |
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$output .= "\$_from = \$_smarty_tpl->smarty->ext->_foreach->init(\$_smarty_tpl, $from, " . |
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var_export($item, true); |
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if ($name || $needTotal || $key) { |
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$output .= ', ' . var_export($needTotal, true); |
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} |
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if ($name || $key) { |
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$output .= ', ' . var_export($key, true); |
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} |
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if ($name) { |
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$output .= ', ' . var_export($name, true) . ', ' . var_export($namedAttr, true); |
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} |
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$output .= ");\n"; |
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if (isset($itemAttr[ 'show' ])) { |
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$output .= "{$itemVar}->show = ({$itemVar}->total > 0);\n"; |
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} |
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if (isset($itemAttr[ 'iteration' ])) { |
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$output .= "{$itemVar}->iteration = 0;\n"; |
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} |
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if (isset($itemAttr[ 'index' ])) { |
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$output .= "{$itemVar}->index = -1;\n"; |
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} |
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$output .= "if (\$_from !== null) {\n"; |
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$output .= "foreach (\$_from as {$keyTerm}{$itemVar}->value) {\n"; |
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if (isset($attributes[ 'key' ]) && isset($itemAttr[ 'key' ])) { |
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$output .= "\$_smarty_tpl->tpl_vars['{$key}']->value = {$itemVar}->key;\n"; |
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} |
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if (isset($itemAttr[ 'iteration' ])) { |
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$output .= "{$itemVar}->iteration++;\n"; |
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} |
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if (isset($itemAttr[ 'index' ])) { |
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$output .= "{$itemVar}->index++;\n"; |
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} |
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if (isset($itemAttr[ 'first' ])) { |
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$output .= "{$itemVar}->first = !{$itemVar}->index;\n"; |
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} |
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if (isset($itemAttr[ 'last' ])) { |
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$output .= "{$itemVar}->last = {$itemVar}->iteration === {$itemVar}->total;\n"; |
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} |
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if (isset($foreachVar)) { |
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if (isset($namedAttr[ 'iteration' ])) { |
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$output .= "{$foreachVar}->value['iteration']++;\n"; |
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} |
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if (isset($namedAttr[ 'index' ])) { |
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$output .= "{$foreachVar}->value['index']++;\n"; |
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} |
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if (isset($namedAttr[ 'first' ])) { |
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$output .= "{$foreachVar}->value['first'] = !{$foreachVar}->value['index'];\n"; |
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} |
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if (isset($namedAttr[ 'last' ])) { |
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$output .= "{$foreachVar}->value['last'] = {$foreachVar}->value['iteration'] === {$foreachVar}->value['total'];\n"; |
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} |
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} |
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if (!empty($itemAttr)) { |
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$output .= "{$local}saved = {$itemVar};\n"; |
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} |
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$output .= '?>'; |
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return $output; |
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} |
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/** |
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* Compiles code for to restore saved template variables |
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* |
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* @param int $levels number of levels to restore |
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* |
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* @return string compiled code |
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*/ |
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public function compileRestore($levels) |
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{ |
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return "\$_smarty_tpl->smarty->ext->_foreach->restore(\$_smarty_tpl, {$levels});"; |
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} |
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} |
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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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* @subpackage Compiler |
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*/ |
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class Smarty_Internal_Compile_Foreachelse extends Smarty_Internal_CompileBase |
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{ |
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/** |
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* Compiles code for the {foreachelse} tag |
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* |
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* @param array $args array with attributes from parser |
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* @param \Smarty_Internal_TemplateCompilerBase $compiler compiler object |
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* |
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* @return string compiled code |
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*/ |
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public function compile($args, Smarty_Internal_TemplateCompilerBase $compiler) |
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{ |
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// check and get attributes |
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$_attr = $this->getAttributes($compiler, $args); |
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list($openTag, $nocache, $local, $itemVar, $restore) = $this->closeTag($compiler, array('foreach')); |
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$this->openTag($compiler, 'foreachelse', array('foreachelse', $nocache, $local, $itemVar, 0)); |
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$output = "<?php\n"; |
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if ($restore === 2) { |
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$output .= "{$itemVar} = {$local}saved;\n"; |
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} |
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$output .= "}\n} else {\n?>"; |
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return $output; |
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} |
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} |
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/** |
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* Smarty Internal Plugin Compile Foreachclose 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_Foreachclose extends Smarty_Internal_CompileBase |
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{ |
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/** |
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* Compiles code for the {/foreach} tag |
314
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* |
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* @param array $args array with attributes from parser |
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* @param \Smarty_Internal_TemplateCompilerBase $compiler compiler object |
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* |
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* @return string compiled code |
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* @throws \SmartyCompilerException |
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*/ |
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public function compile($args, Smarty_Internal_TemplateCompilerBase $compiler) |
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|
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{ |
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$compiler->loopNesting--; |
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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( |
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$openTag, $compiler->nocache, $local, $itemVar, $restore |
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|
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) = $this->closeTag($compiler, array('foreach', 'foreachelse')); |
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$output = "<?php\n"; |
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if ($restore === 2) { |
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$output .= "{$itemVar} = {$local}saved;\n"; |
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} |
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if ($restore > 0) { |
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$output .= "}\n"; |
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} |
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$output .= "}\n"; |
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/* @var Smarty_Internal_Compile_Foreach $foreachCompiler */ |
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$foreachCompiler = $compiler->getTagCompiler('foreach'); |
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$output .= $foreachCompiler->compileRestore(1); |
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$output .= "?>"; |
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return $output; |
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} |
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} |
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In PHP, under loose comparison (like
==
, or!=
, orswitch
conditions), values of different types might be equal.For
string
values, the empty string''
is a special case, in particular the following results might be unexpected: