smarty/libs/sysplugins/smarty_internal_compile_block.php

<?php
/**
 * Smarty Internal Plugin Compile Block
 * 
 * Compiles the {block}{/block} tags
 * 
 * @package Smarty
 * @subpackage Compiler
 * @author Uwe Tews 
 */

/**
 * Smarty Internal Plugin Compile Block Class
 */
class Smarty_Internal_Compile_Block extends Smarty_Internal_CompileBase {
	// attribute definitions
    public $required_attributes = array('name');
    public $shorttag_order = array('name');
    /**
     * Compiles code for the {block} tag
     * 
     * @param array $args array with attributes from parser
     * @param object $compiler compiler object
     * @return boolean true
     */
    public function compile($args, $compiler)
    {
        $this->compiler = $compiler;
        // check and get attributes
        $_attr = $this->_get_attributes($args);
        $save = array($_attr, $compiler->parser->current_buffer, $this->compiler->nocache, $this->compiler->smarty->merge_compiled_includes, $compiler->smarty->inheritance);
        $this->_open_tag('block', $save);
        if ($_attr['nocache'] == true) {
            $compiler->nocache = true;
        }
        // set flag for {block} tag
        $compiler->smarty->inheritance = true;
        // must merge includes
        $this->compiler->smarty->merge_compiled_includes = true; 

        $compiler->parser->current_buffer = new _smarty_template_buffer($compiler->parser);
        $compiler->has_code = false;
        return true;
    } 


    static function saveBlockData($block_content, $block_tag, $template, $filepath)
    {
    	$_rdl = preg_quote($template->smarty->right_delimiter);
        $_ldl = preg_quote($template->smarty->left_delimiter);

        if (0 == preg_match("!({$_ldl}block\s+)(name=)?(\w+|'.*'|\".*\")(\s*?)?((append|prepend|nocache)(=true)?)?(\s*{$_rdl})!", $block_tag, $_match)) {
            $error_text = 'Syntax Error in template "' . $template->getTemplateFilepath() . '"   "' . htmlspecialchars($block_tag) . '" illegal options';
            throw new SmartyCompilerException($error_text);
        } else {
            $_name = trim($_match[3], '\'"'); 
            // replace {$smarty.block.child}
            if (strpos($block_content, $template->smarty->left_delimiter . '$smarty.block.child' . $template->smarty->right_delimiter) !== false) {
                if (isset($template->block_data[$_name])) {
                    $block_content = str_replace($template->smarty->left_delimiter . '$smarty.block.child' . $template->smarty->right_delimiter,
                        $template->block_data[$_name]['source'], $block_content);
                    unset($template->block_data[$_name]);
                } else {
                    $block_content = str_replace($template->smarty->left_delimiter . '$smarty.block.child' . $template->smarty->right_delimiter,
                        '', $block_content);
                } 
            } 
            if (isset($template->block_data[$_name])) {
                if (strpos($template->block_data[$_name]['source'], '%%%%SMARTY_PARENT%%%%') !== false) {
                    $template->block_data[$_name]['source'] =
                    str_replace('%%%%SMARTY_PARENT%%%%', $block_content, $template->block_data[$_name]['source']);
                } elseif ($template->block_data[$_name]['mode'] == 'prepend') {
                    $template->block_data[$_name]['source'] .= $block_content;
                } elseif ($template->block_data[$_name]['mode'] == 'append') {
                    $template->block_data[$_name]['source'] = $block_content . $template->block_data[$_name]['source'];
                } 
            } else {
                $template->block_data[$_name]['source'] = $block_content;
            } 
            if ($_match[6] == 'append') {
                $template->block_data[$_name]['mode'] = 'append';
            } elseif ($_match[6] == 'prepend') {
                $template->block_data[$_name]['mode'] = 'prepend';
            } else {
                $template->block_data[$_name]['mode'] = 'replace';
            } 
            $template->block_data[$_name]['file'] = $filepath;
        }
    }

	static function compileChildBlock ($compiler, $_name = null)
	{
		$_output = '';
        // if called by {$smarty.block.child} we must search the name of enclosing {block}
		if ($_name == null) {
        	$stack_count = count($compiler->_tag_stack);
            while (--$stack_count >= 0) {
            	if ($compiler->_tag_stack[$stack_count][0] == 'block') {
                	$_name = trim($compiler->_tag_stack[$stack_count][1][0]['name'] ,"'");
                	break;
                }
            }
		// flag that child is already compile by {$smarty.block.child} inclusion
        $compiler->template->block_data[$_name]['compiled'] = true;
        }
		if ($_name == null) {
       		$compiler->trigger_template_error('{$smarty.block.child} used out of context', $this->compiler->lex->taglineno);
		}
		// undefined child?
		if (!isset($compiler->template->block_data[$_name])) {
       		return '';
		}
		$_tpl = new Smarty_Internal_template ('eval:' . $compiler->template->block_data[$_name]['source'], $compiler->smarty, $compiler->template, $compiler->template->cache_id, 
		               $compiler->template->compile_id = null, $compiler->template->caching, $compiler->template->cache_lifetime);
		$_tpl->properties['nocache_hash'] = $compiler->template->properties['nocache_hash'];
		$_tpl->template_filepath = $compiler->template->block_data[$_name]['file'];
		if ($compiler->nocache) {
			$_tpl->forceNocache = 2;
		} else {
			$_tpl->forceNocache = 1;
		}
		$_tpl->suppressHeader = true;
		$_tpl->suppressFileDependency = true;
		if (strpos($compiler->template->block_data[$_name]['source'], '%%%%SMARTY_PARENT%%%%') !== false) {
			$_output = str_replace('%%%%SMARTY_PARENT%%%%', $compiler->parser->current_buffer->to_smarty_php(), $_tpl->getCompiledTemplate());
		} elseif ($compiler->template->block_data[$_name]['mode'] == 'prepend') {
			$_output = $_tpl->getCompiledTemplate() . $compiler->parser->current_buffer->to_smarty_php();
		} elseif ($compiler->template->block_data[$_name]['mode'] == 'append') {
			$_output = $compiler->parser->current_buffer->to_smarty_php() . $_tpl->getCompiledTemplate();
		} elseif (!empty($compiler->template->block_data[$_name])) {
			$_output = $_tpl->getCompiledTemplate();
		}
		$compiler->template->properties['file_dependency'] = array_merge($compiler->template->properties['file_dependency'], $_tpl->properties['file_dependency']);
		$compiler->template->properties['function'] = array_merge($compiler->template->properties['function'], $_tpl->properties['function']);
		if ($_tpl->has_nocache_code) {
			$compiler->template->has_nocache_code = true;
		}
		foreach($_tpl->required_plugins as $code => $tmp1) {
			foreach($tmp1 as $name => $tmp) {
				foreach($tmp as $type => $data) {
					$compiler->template->required_plugins[$code][$name][$type] = $data;
				}
			}
		}
		unset($_tpl);
		return $_output;
	}

}

/**
 * Smarty Internal Plugin Compile BlockClose Class
 */
class Smarty_Internal_Compile_Blockclose extends Smarty_Internal_CompileBase {
    /**
     * Compiles code for the {/block} tag
     * 
     * @param array $args array with attributes from parser
     * @param object $compiler compiler object
     * @return string compiled code
     */
    public function compile($args, $compiler)
    {
        $this->compiler = $compiler;
        $this->smarty = $compiler->smarty;
        $this->compiler->has_code = true; 
        // check and get attributes
        $_attr = $this->_get_attributes($args);
        $saved_data = $this->_close_tag(array('block'));
        $_name = trim($saved_data[0]['name'], "\"'");
        if (isset($compiler->template->block_data[$_name]) && !isset($compiler->template->block_data[$_name]['compiled'])) {
        	$_output = Smarty_Internal_Compile_Block::compileChildBlock($compiler, $_name);
        } else {
            $_output = $compiler->parser->current_buffer->to_smarty_php();
            unset ($compiler->template->block_data[$_name]['compiled']);
        }
        // reset flags
        $compiler->parser->current_buffer = $saved_data[1];
        $compiler->nocache = $saved_data[2];
        $compiler->smarty->merge_compiled_includes = $saved_data[3];
        $compiler->smarty->inheritance = $saved_data[4];
        // $_output content has already nocache code processed
        $compiler->suppressNocacheProcessing = true;
        return $_output;
    } 
} 
?>