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<?php
/**
* Smarty Internal Plugin Compile ForeachSection
* Shared methods for {foreach} {section} tags
*
* @package Smarty
* @subpackage Compiler
* @author Uwe Tews
*/
/**
* Smarty Internal Plugin Compile ForeachSection Class
*
* @package Smarty
* @subpackage Compiler
*/
class Smarty_Internal_Compile_Private_ForeachSection extends Smarty_Internal_CompileBase
{
/**
* Preg search pattern
*
* @var string
*/
private $propertyPreg = '';
/**
* Offsets in preg match result
*
* @var array
*/
private $resultOffsets = array();
/**
* Start offset
*
* @var int
*/
private $startOffset = 0;
/**
* Name of this tag
*
* @var string
*/
public $tagName = '';
/**
* Valid properties of $smarty.xxx variable
*
* @var array
*/
public $nameProperties = array();
/**
* {section} tag has no item properties
*
* @var array
*/
public $itemProperties = null;
/**
* {section} tag has always name attribute
*
* @var bool
*/
public $isNamed = true;
/**
* @var array
*/
public $matchResults = array();
/**
* Scan sources for used tag attributes
*
* @param array $attributes
* @param \Smarty_Internal_TemplateCompilerBase $compiler
*/
public function scanForProperties($attributes, Smarty_Internal_TemplateCompilerBase $compiler)
{
$this->propertyPreg = '~(';
$this->startOffset = 0;
$this->resultOffsets = array();
$this->matchResults = array('named' => array(), 'item' => array());
if ($this->isNamed) {
$this->buildPropertyPreg(true, $attributes);
}
if (isset($this->itemProperties)) {
if ($this->isNamed) {
$this->propertyPreg .= '|';
}
$this->buildPropertyPreg(false, $attributes);
}
$this->propertyPreg .= ')\W~i';
// Template source
$this->matchTemplateSource($compiler);
// Parent template source
$this->matchParentTemplateSource($compiler);
// {block} source
$this->matchBlockSource($compiler);
}
/**
* Build property preg string
*
* @param bool $named
* @param array $attributes
*/
public function buildPropertyPreg($named, $attributes)
{
if ($named) {
$this->resultOffsets['named'] = $this->startOffset + 3;
$this->propertyPreg .= "([\$]smarty[.]{$this->tagName}[.]{$attributes['name']}[.](";
$properties = $this->nameProperties;
} else {
$this->resultOffsets['item'] = $this->startOffset + 3;
$this->propertyPreg .= "([\$]{$attributes['item']}[@](";
$properties = $this->itemProperties;
}
$this->startOffset += count($properties) + 2;
$propName = reset($properties);
while ($propName) {
$this->propertyPreg .= "({$propName})";
$propName = next($properties);
if ($propName) {
$this->propertyPreg .= '|';
}
}
$this->propertyPreg .= '))';
}
/**
* Find matches in source string
*
* @param string $source
*/
public function matchProperty($source)
{
preg_match_all($this->propertyPreg, $source, $match, PREG_SET_ORDER);
foreach ($this->resultOffsets as $key => $offset) {
foreach ($match as $m) {
if (isset($m[$offset]) && !empty($m[$offset])) {
$this->matchResults[$key][strtolower($m[$offset])] = true;
}
}
}
}
/**
* Find matches in template source
*
* @param \Smarty_Internal_TemplateCompilerBase $compiler
*/
public function matchTemplateSource(Smarty_Internal_TemplateCompilerBase $compiler)
{
$this->matchProperty($compiler->parser->lex->data);
}
/**
* Find matches in all parent template source
*
* @param \Smarty_Internal_TemplateCompilerBase $compiler
*/
public function matchParentTemplateSource(Smarty_Internal_TemplateCompilerBase $compiler)
{
// search parent compiler template source
$nextCompiler = $compiler;
while ($nextCompiler !== $nextCompiler->parent_compiler) {
$nextCompiler = $nextCompiler->parent_compiler;
if ($compiler !== $nextCompiler) {
// get template source
$_content = $nextCompiler->template->source->getContent();
if ($_content != '') {
// run pre filter if required
if ((isset($nextCompiler->smarty->autoload_filters['pre']) ||
isset($nextCompiler->smarty->registered_filters['pre']))) {
$_content = $nextCompiler->smarty->ext->_filter_Handler->runFilter('pre', $_content, $nextCompiler->template);
}
$this->matchProperty($_content);
}
}
}
}
/**
* Find matches in {block} tag source
*
* @param \Smarty_Internal_TemplateCompilerBase $compiler
*/
public function matchBlockSource(Smarty_Internal_TemplateCompilerBase $compiler)
{
}
/**
* Compiles code for the {$smarty.foreach.xxx} or {$smarty.section.xxx}tag
*
* @param array $args array with attributes from parser
* @param \Smarty_Internal_TemplateCompilerBase $compiler compiler object
* @param array $parameter array with compilation parameter
*
* @return string compiled code
* @throws \SmartyCompilerException
*/
public function compileSpecialVariable($args, Smarty_Internal_TemplateCompilerBase $compiler, $parameter)
{
$tag = strtolower(trim($parameter[ 0 ], '"\''));
$name = isset($parameter[ 1 ]) ? $compiler->getId($parameter[ 1 ]) : false;
if (!$name) {
$compiler->trigger_template_error("missing or illegal \$smarty.{$tag} name attribute", null, true);
}
$property = isset($parameter[ 2 ]) ? strtolower($compiler->getId($parameter[ 2 ])) : false;
if (!$property || !in_array($property, $this->nameProperties)) {
$compiler->trigger_template_error("missing or illegal \$smarty.{$tag} property attribute", null, true);
}
$tagVar = "'__smarty_{$tag}_{$name}'";
return "(isset(\$_smarty_tpl->tpl_vars[{$tagVar}]->value['{$property}']) ? \$_smarty_tpl->tpl_vars[{$tagVar}]->value['{$property}'] : null)";
}
}
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