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Editing: smarty_internal_parsetree_template.php

<?php
/**
 * Smarty Internal Plugin Templateparser Parse Tree
 * These are classes to build parse tree in the template parser
 *
 * @package    Smarty
 * @subpackage Compiler
 * @author     Thue Kristensen
 * @author     Uwe Tews
 */

/**
 * Template element
 *
 * @package    Smarty
 * @subpackage Compiler
 * @ignore
 */
class Smarty_Internal_ParseTree_Template extends Smarty_Internal_ParseTree
{
    /**
     * Array of template elements
     *
     * @var array
     */
    public $subtrees = array();

/**
     * Create root of parse tree for template elements
     */
    public function __construct()
    {
    }

/**
     * Append buffer to subtree
     *
     * @param \Smarty_Internal_Templateparser $parser
     * @param Smarty_Internal_ParseTree       $subtree
     */
    public function append_subtree(Smarty_Internal_Templateparser $parser, Smarty_Internal_ParseTree $subtree)
    {
        if (!empty($subtree->subtrees)) {
            $this->subtrees = array_merge($this->subtrees, $subtree->subtrees);
        } else {
            if ($subtree->data !== '') {
                $this->subtrees[] = $subtree;
            }
        }
    }

/**
     * Append array to subtree
     *
     * @param \Smarty_Internal_Templateparser $parser
     * @param \Smarty_Internal_ParseTree[]    $array
     */
    public function append_array(Smarty_Internal_Templateparser $parser, $array = array())
    {
        if (!empty($array)) {
            $this->subtrees = array_merge($this->subtrees, (array)$array);
        }
    }

/**
     * Prepend array to subtree
     *
     * @param \Smarty_Internal_Templateparser $parser
     * @param \Smarty_Internal_ParseTree[]    $array
     */
    public function prepend_array(Smarty_Internal_Templateparser $parser, $array = array())
    {
        if (!empty($array)) {
            $this->subtrees = array_merge((array)$array, $this->subtrees);
        }
    }

/**
     * Sanitize and merge subtree buffers together
     *
     * @param \Smarty_Internal_Templateparser $parser
     *
     * @return string template code content
     */
    public function to_smarty_php(Smarty_Internal_Templateparser $parser)
    {
        $code = '';

foreach ($this->getChunkedSubtrees() as $chunk) {
	        $text = '';
	        switch ($chunk['mode']) {
		        case 'textstripped':
			        foreach ($chunk['subtrees'] as $subtree) {
				        $text .= $subtree->to_smarty_php($parser);
			        }
			        $code .= preg_replace(
				        '/((<%)|(%>)|(<\?php)|(<\?)|(\?>)|(<\/?script))/',
				        "<?php echo '\$1'; ?>\n",
				        $parser->compiler->processText($text)
			        );
			        break;
		        case 'text':
			        foreach ($chunk['subtrees'] as $subtree) {
				        $text .= $subtree->to_smarty_php($parser);
			        }
			        $code .= preg_replace(
				        '/((<%)|(%>)|(<\?php)|(<\?)|(\?>)|(<\/?script))/',
				        "<?php echo '\$1'; ?>\n",
				        $text
			        );
			        break;
		        case 'tag':
			        foreach ($chunk['subtrees'] as $subtree) {
				        $text = $parser->compiler->appendCode($text, $subtree->to_smarty_php($parser));
			        }
			        $code .= $text;
			        break;
		        default:
			        foreach ($chunk['subtrees'] as $subtree) {
				        $text = $subtree->to_smarty_php($parser);
			        }
			        $code .= $text;

}
        }
        return $code;
    }

private function getChunkedSubtrees() {
    	$chunks = array();
    	$currentMode = null;
    	$currentChunk = array();
	    for ($key = 0, $cnt = count($this->subtrees); $key < $cnt; $key++) {

if ($this->subtrees[ $key ]->data === '' && in_array($currentMode, array('textstripped', 'text', 'tag'))) {
	    		continue;
	    	}

if ($this->subtrees[ $key ] instanceof Smarty_Internal_ParseTree_Text
			    && $this->subtrees[ $key ]->isToBeStripped()) {
		    	$newMode = 'textstripped';
		    } elseif ($this->subtrees[ $key ] instanceof Smarty_Internal_ParseTree_Text) {
			    $newMode = 'text';
		    } elseif ($this->subtrees[ $key ] instanceof Smarty_Internal_ParseTree_Tag) {
			    $newMode = 'tag';
		    } else {
			    $newMode = 'other';
		    }

if ($newMode == $currentMode) {
			    $currentChunk[] = $this->subtrees[ $key ];
		    } else {
		    	$chunks[] = array(
		    		'mode' => $currentMode,
				    'subtrees' => $currentChunk
			    );
		    	$currentMode = $newMode;
			    $currentChunk = array($this->subtrees[ $key ]);
		    }
	    }
	    if ($currentMode && $currentChunk) {
		    $chunks[] = array(
			    'mode' => $currentMode,
			    'subtrees' => $currentChunk
		    );
	    }
		return $chunks;
    }
}

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