diff options
Diffstat (limited to 'phpBB/includes/functions_template.php')
| -rw-r--r-- | phpBB/includes/functions_template.php | 814 | 
1 files changed, 814 insertions, 0 deletions
diff --git a/phpBB/includes/functions_template.php b/phpBB/includes/functions_template.php new file mode 100644 index 0000000000..1d3a4d74f8 --- /dev/null +++ b/phpBB/includes/functions_template.php @@ -0,0 +1,814 @@ +<?php +/** +* +* @package phpBB3 +* @version $Id$ +* @copyright (c) 2005 phpBB Group, sections (c) 2001 ispi of Lincoln Inc +* @license http://opensource.org/licenses/gpl-license.php GNU Public License +* +*/ + +/** +* @ignore +*/ +if (!defined('IN_PHPBB')) +{ +	exit; +} + +/** +* Extension of template class - Functions needed for compiling templates only. +* +* psoTFX, phpBB Development Team - Completion of file caching, decompilation +* routines and implementation of conditionals/keywords and associated changes +* +* The interface was inspired by PHPLib templates,  and the template file (formats are +* quite similar) +* +* The keyword/conditional implementation is currently based on sections of code from +* the Smarty templating engine (c) 2001 ispi of Lincoln, Inc. which is released +* (on its own and in whole) under the LGPL. Section 3 of the LGPL states that any code +* derived from an LGPL application may be relicenced under the GPL, this applies +* to this source +* +* DEFINE directive inspired by a request by Cyberalien +* +* @package phpBB3 +*/ +class template_compile +{ +	var $template; + +	// Various storage arrays +	var $block_names = array(); +	var $block_else_level = array(); + +	/** +	* constuctor +	*/ +	function template_compile(&$template) +	{ +		$this->template = &$template; +	} + +	/** +	* Load template source from file +	* @access private +	*/ +	function _tpl_load_file($handle, $store_in_db = false) +	{ +		// Try and open template for read +		if (!file_exists($this->template->files[$handle])) +		{ +			trigger_error("template->_tpl_load_file(): File {$this->template->files[$handle]} does not exist or is empty", E_USER_ERROR); +		} + +		$this->template->compiled_code[$handle] = $this->compile(trim(@file_get_contents($this->template->files[$handle]))); + +		// Actually compile the code now. +		$this->compile_write($handle, $this->template->compiled_code[$handle]); + +		// Store in database if required... +		if ($store_in_db) +		{ +			global $db, $user; + +			$sql_ary = array( +				'template_id'			=> $this->template->files_template[$handle], +				'template_filename'		=> $this->template->filename[$handle], +				'template_included'		=> '', +				'template_mtime'		=> time(), +				'template_data'			=> trim(@file_get_contents($this->template->files[$handle])), +			); + +			$sql = 'INSERT INTO ' . STYLES_TEMPLATE_DATA_TABLE . ' ' . $db->sql_build_array('INSERT', $sql_ary); +			$db->sql_query($sql); +		} +	} + +	/** +	* Remove any PHP tags that do not belong, these regular expressions are derived from +	* the ones that exist in zend_language_scanner.l +	* @access private +	*/ +	function remove_php_tags(&$code) +	{ +		// This matches the information gathered from the internal PHP lexer +		$match = array( +			'#<([\?%])=?.*?\1>#s', +			'#<script\s+language\s*=\s*(["\']?)php\1\s*>.*?</script\s*>#s', +			'#<\?php(?:\r\n?|[ \n\t]).*?\?>#s' +		); + +		$code = preg_replace($match, '', $code); +	} + +	/** +	* The all seeing all doing compile method. Parts are inspired by or directly from Smarty +	* @access private +	*/ +	function compile($code, $no_echo = false, $echo_var = '') +	{ +		global $config; + +		if ($echo_var) +		{ +			global $$echo_var; +		} + +		// Remove any "loose" php ... we want to give admins the ability +		// to switch on/off PHP for a given template. Allowing unchecked +		// php is a no-no. There is a potential issue here in that non-php +		// content may be removed ... however designers should use entities +		// if they wish to display < and > +		$this->remove_php_tags($code); + +		// Pull out all block/statement level elements and separate plain text +		preg_match_all('#<!-- PHP -->(.*?)<!-- ENDPHP -->#s', $code, $matches); +		$php_blocks = $matches[1]; +		$code = preg_replace('#<!-- PHP -->.*?<!-- ENDPHP -->#s', '<!-- PHP -->', $code); + +		preg_match_all('#<!-- INCLUDE (\{\$?[A-Z0-9\-_]+\}|[a-zA-Z0-9\_\-\+\./]+) -->#', $code, $matches); +		$include_blocks = $matches[1]; +		$code = preg_replace('#<!-- INCLUDE (?:\{\$?[A-Z0-9\-_]+\}|[a-zA-Z0-9\_\-\+\./]+) -->#', '<!-- INCLUDE -->', $code); + +		preg_match_all('#<!-- INCLUDEPHP ([a-zA-Z0-9\_\-\+\./]+) -->#', $code, $matches); +		$includephp_blocks = $matches[1]; +		$code = preg_replace('#<!-- INCLUDEPHP [a-zA-Z0-9\_\-\+\./]+ -->#', '<!-- INCLUDEPHP -->', $code); + +		preg_match_all('#<!-- ([^<].*?) (.*?)? ?-->#', $code, $blocks, PREG_SET_ORDER); + +		$text_blocks = preg_split('#<!-- [^<].*? (?:.*?)? ?-->#', $code); + +		for ($i = 0, $j = sizeof($text_blocks); $i < $j; $i++) +		{ +			$this->compile_var_tags($text_blocks[$i]); +		} +		$compile_blocks = array(); + +		for ($curr_tb = 0, $tb_size = sizeof($blocks); $curr_tb < $tb_size; $curr_tb++) +		{ +			$block_val = &$blocks[$curr_tb]; + +			switch ($block_val[1]) +			{ +				case 'BEGIN': +					$this->block_else_level[] = false; +					$compile_blocks[] = '<?php ' . $this->compile_tag_block($block_val[2]) . ' ?>'; +				break; + +				case 'BEGINELSE': +					$this->block_else_level[sizeof($this->block_else_level) - 1] = true; +					$compile_blocks[] = '<?php }} else { ?>'; +				break; + +				case 'END': +					array_pop($this->block_names); +					$compile_blocks[] = '<?php ' . ((array_pop($this->block_else_level)) ? '}' : '}}') . ' ?>'; +				break; + +				case 'IF': +					$compile_blocks[] = '<?php ' . $this->compile_tag_if($block_val[2], false) . ' ?>'; +				break; + +				case 'ELSE': +					$compile_blocks[] = '<?php } else { ?>'; +				break; + +				case 'ELSEIF': +					$compile_blocks[] = '<?php ' . $this->compile_tag_if($block_val[2], true) . ' ?>'; +				break; + +				case 'ENDIF': +					$compile_blocks[] = '<?php } ?>'; +				break; + +				case 'DEFINE': +					$compile_blocks[] = '<?php ' . $this->compile_tag_define($block_val[2], true) . ' ?>'; +				break; + +				case 'UNDEFINE': +					$compile_blocks[] = '<?php ' . $this->compile_tag_define($block_val[2], false) . ' ?>'; +				break; + +				case 'INCLUDE': +					$temp = array_shift($include_blocks); + +					// Dynamic includes +					// Cheap match rather than a full blown regexp, we already know +					// the format of the input so just use string manipulation. +					if ($temp[0] == '{') +					{ +						$file = false; + +						if ($temp[1] == '$') +						{ +							$var = substr($temp, 2, -1); +							//$file = $this->template->_tpldata['DEFINE']['.'][$var]; +							$temp = "\$this->_tpldata['DEFINE']['.']['$var']"; +						} +						else +						{ +							$var = substr($temp, 1, -1); +							//$file = $this->template->_rootref[$var]; +							$temp = "\$this->_rootref['$var']"; +						} +					} +					else +					{ +						$file = $temp; +					} + +					$compile_blocks[] = '<?php ' . $this->compile_tag_include($temp) . ' ?>'; + +					// No point in checking variable includes +					if ($file) +					{ +						$this->template->_tpl_include($file, false); +					} +				break; + +				case 'INCLUDEPHP': +					$compile_blocks[] = ($config['tpl_allow_php']) ? '<?php ' . $this->compile_tag_include_php(array_shift($includephp_blocks)) . ' ?>' : ''; +				break; + +				case 'PHP': +					$compile_blocks[] = ($config['tpl_allow_php']) ? '<?php ' . array_shift($php_blocks) . ' ?>' : ''; +				break; + +				default: +					$this->compile_var_tags($block_val[0]); +					$trim_check = trim($block_val[0]); +					$compile_blocks[] = (!$no_echo) ? ((!empty($trim_check)) ? $block_val[0] : '') : ((!empty($trim_check)) ? $block_val[0] : ''); +				break; +			} +		} + +		$template_php = ''; +		for ($i = 0, $size = sizeof($text_blocks); $i < $size; $i++) +		{ +			$trim_check_text = trim($text_blocks[$i]); +			$template_php .= (!$no_echo) ? (($trim_check_text != '') ? $text_blocks[$i] : '') . ((isset($compile_blocks[$i])) ? $compile_blocks[$i] : '') : (($trim_check_text != '') ? $text_blocks[$i] : '') . ((isset($compile_blocks[$i])) ? $compile_blocks[$i] : ''); +		} + +		// Remove unused opening/closing tags +		$template_php = str_replace(' ?><?php ', ' ', $template_php); + +		// Now add a newline after each php closing tag which already has a newline +		// PHP itself strips a newline if a closing tag is used (this is documented behaviour) and it is mostly not intended by style authors to remove newlines +		$template_php = preg_replace('#\?\>([\r\n])#', '?>\1\1', $template_php); + +		// There will be a number of occasions where we switch into and out of +		// PHP mode instantaneously. Rather than "burden" the parser with this +		// we'll strip out such occurences, minimising such switching +		if ($no_echo) +		{ +			return "\$$echo_var .= '" . $template_php . "'"; +		} + +		return $template_php; +	} + +	/** +	* Compile variables +	* @access private +	*/ +	function compile_var_tags(&$text_blocks) +	{ +		// change template varrefs into PHP varrefs +		$varrefs = array(); + +		// This one will handle varrefs WITH namespaces +		preg_match_all('#\{((?:[a-z0-9\-_]+\.)+)(\$)?([A-Z0-9\-_]+)\}#', $text_blocks, $varrefs, PREG_SET_ORDER); + +		foreach ($varrefs as $var_val) +		{ +			$namespace = $var_val[1]; +			$varname = $var_val[3]; +			$new = $this->generate_block_varref($namespace, $varname, true, $var_val[2]); + +			$text_blocks = str_replace($var_val[0], $new, $text_blocks); +		} + +		// This will handle the remaining root-level varrefs +		// transform vars prefixed by L_ into their language variable pendant if nothing is set within the tpldata array +		if (strpos($text_blocks, '{L_') !== false) +		{ +			$text_blocks = preg_replace('#\{L_([A-Z0-9\-_]+)\}#', "<?php echo ((isset(\$this->_rootref['L_\\1'])) ? \$this->_rootref['L_\\1'] : ((isset(\$user->lang['\\1'])) ? \$user->lang['\\1'] : '{ \\1 }')); ?>", $text_blocks); +		} + +		// Handle addslashed language variables prefixed with LA_ +		// If a template variable already exist, it will be used in favor of it... +		if (strpos($text_blocks, '{LA_') !== false) +		{ +			$text_blocks = preg_replace('#\{LA_([A-Z0-9\-_]+)\}#', "<?php echo ((isset(\$this->_rootref['LA_\\1'])) ? \$this->_rootref['LA_\\1'] : ((isset(\$this->_rootref['L_\\1'])) ? addslashes(\$this->_rootref['L_\\1']) : ((isset(\$user->lang['\\1'])) ? addslashes(\$user->lang['\\1']) : '{ \\1 }'))); ?>", $text_blocks); +		} + +		// Handle remaining varrefs +		$text_blocks = preg_replace('#\{([A-Z0-9\-_]+)\}#', "<?php echo (isset(\$this->_rootref['\\1'])) ? \$this->_rootref['\\1'] : ''; ?>", $text_blocks); +		$text_blocks = preg_replace('#\{\$([A-Z0-9\-_]+)\}#', "<?php echo (isset(\$this->_tpldata['DEFINE']['.']['\\1'])) ? \$this->_tpldata['DEFINE']['.']['\\1'] : ''; ?>", $text_blocks); + +		return; +	} + +	/** +	* Compile blocks +	* @access private +	*/ +	function compile_tag_block($tag_args) +	{ +		$no_nesting = false; + +		// Is the designer wanting to call another loop in a loop? +		if (strpos($tag_args, '!') === 0) +		{ +			// Count the number if ! occurrences (not allowed in vars) +			$no_nesting = substr_count($tag_args, '!'); +			$tag_args = substr($tag_args, $no_nesting); +		} + +		// Allow for control of looping (indexes start from zero): +		// foo(2)    : Will start the loop on the 3rd entry +		// foo(-2)   : Will start the loop two entries from the end +		// foo(3,4)  : Will start the loop on the fourth entry and end it on the fifth +		// foo(3,-4) : Will start the loop on the fourth entry and end it four from last +		if (preg_match('#^([^()]*)\(([\-\d]+)(?:,([\-\d]+))?\)$#', $tag_args, $match)) +		{ +			$tag_args = $match[1]; + +			if ($match[2] < 0) +			{ +				$loop_start = '($_' . $tag_args . '_count ' . $match[2] . ' < 0 ? 0 : $_' . $tag_args . '_count ' . $match[2] . ')'; +			} +			else +			{ +				$loop_start = '($_' . $tag_args . '_count < ' . $match[2] . ' ? $_' . $tag_args . '_count : ' . $match[2] . ')'; +			} + +			if (strlen($match[3]) < 1 || $match[3] == -1) +			{ +				$loop_end = '$_' . $tag_args . '_count'; +			} +			else if ($match[3] >= 0) +			{ +				$loop_end = '(' . ($match[3] + 1) . ' > $_' . $tag_args . '_count ? $_' . $tag_args . '_count : ' . ($match[3] + 1) . ')'; +			} +			else //if ($match[3] < -1) +			{ +				$loop_end = '$_' . $tag_args . '_count' . ($match[3] + 1); +			} +		} +		else +		{ +			$loop_start = 0; +			$loop_end = '$_' . $tag_args . '_count'; +		} + +		$tag_template_php = ''; +		array_push($this->block_names, $tag_args); + +		if ($no_nesting !== false) +		{ +			// We need to implode $no_nesting times from the end... +			$block = array_slice($this->block_names, -$no_nesting); +		} +		else +		{ +			$block = $this->block_names; +		} + +		if (sizeof($block) < 2) +		{ +			// Block is not nested. +			$tag_template_php = '$_' . $tag_args . "_count = (isset(\$this->_tpldata['$tag_args'])) ? sizeof(\$this->_tpldata['$tag_args']) : 0;"; +			$varref = "\$this->_tpldata['$tag_args']"; +		} +		else +		{ +			// This block is nested. +			// Generate a namespace string for this block. +			$namespace = implode('.', $block); + +			// Get a reference to the data array for this block that depends on the +			// current indices of all parent blocks. +			$varref = $this->generate_block_data_ref($namespace, false); + +			// Create the for loop code to iterate over this block. +			$tag_template_php = '$_' . $tag_args . '_count = (isset(' . $varref . ')) ? sizeof(' . $varref . ') : 0;'; +		} + +		$tag_template_php .= 'if ($_' . $tag_args . '_count) {'; + +		/** +		* The following uses foreach for iteration instead of a for loop, foreach is faster but requires PHP to make a copy of the contents of the array which uses more memory +		* <code> +		*	if (!$offset) +		*	{ +		*		$tag_template_php .= 'foreach (' . $varref . ' as $_' . $tag_args . '_i => $_' . $tag_args . '_val){'; +		*	} +		* </code> +		*/ + +		$tag_template_php .= 'for ($_' . $tag_args . '_i = ' . $loop_start . '; $_' . $tag_args . '_i < ' . $loop_end . '; ++$_' . $tag_args . '_i){'; +		$tag_template_php .= '$_'. $tag_args . '_val = &' . $varref . '[$_'. $tag_args. '_i];'; + +		return $tag_template_php; +	} + +	/** +	* Compile IF tags - much of this is from Smarty with +	* some adaptions for our block level methods +	* @access private +	*/ +	function compile_tag_if($tag_args, $elseif) +	{ +		// Tokenize args for 'if' tag. +		preg_match_all('/(?: +			"[^"\\\\]*(?:\\\\.[^"\\\\]*)*"         | +			\'[^\'\\\\]*(?:\\\\.[^\'\\\\]*)*\'     | +			[(),]                                  | +			[^\s(),]+)/x', $tag_args, $match); + +		$tokens = $match[0]; +		$is_arg_stack = array(); + +		for ($i = 0, $size = sizeof($tokens); $i < $size; $i++) +		{ +			$token = &$tokens[$i]; + +			switch ($token) +			{ +				case '!==': +				case '===': +				case '<<': +				case '>>': +				case '|': +				case '^': +				case '&': +				case '~': +				case ')': +				case ',': +				case '+': +				case '-': +				case '*': +				case '/': +				case '@': +				break; + +				case '==': +				case 'eq': +					$token = '=='; +				break; + +				case '!=': +				case '<>': +				case 'ne': +				case 'neq': +					$token = '!='; +				break; + +				case '<': +				case 'lt': +					$token = '<'; +				break; + +				case '<=': +				case 'le': +				case 'lte': +					$token = '<='; +				break; + +				case '>': +				case 'gt': +					$token = '>'; +				break; + +				case '>=': +				case 'ge': +				case 'gte': +					$token = '>='; +				break; + +				case '&&': +				case 'and': +					$token = '&&'; +				break; + +				case '||': +				case 'or': +					$token = '||'; +				break; + +				case '!': +				case 'not': +					$token = '!'; +				break; + +				case '%': +				case 'mod': +					$token = '%'; +				break; + +				case '(': +					array_push($is_arg_stack, $i); +				break; + +				case 'is': +					$is_arg_start = ($tokens[$i-1] == ')') ? array_pop($is_arg_stack) : $i-1; +					$is_arg	= implode('	', array_slice($tokens,	$is_arg_start, $i -	$is_arg_start)); + +					$new_tokens	= $this->_parse_is_expr($is_arg, array_slice($tokens, $i+1)); + +					array_splice($tokens, $is_arg_start, sizeof($tokens), $new_tokens); + +					$i = $is_arg_start; + +				// no break + +				default: +					if (preg_match('#^((?:[a-z0-9\-_]+\.)+)?(\$)?(?=[A-Z])([A-Z0-9\-_]+)#s', $token, $varrefs)) +					{ +						$token = (!empty($varrefs[1])) ? $this->generate_block_data_ref(substr($varrefs[1], 0, -1), true, $varrefs[2]) . '[\'' . $varrefs[3] . '\']' : (($varrefs[2]) ? '$this->_tpldata[\'DEFINE\'][\'.\'][\'' . $varrefs[3] . '\']' : '$this->_rootref[\'' . $varrefs[3] . '\']'); +					} +					else if (preg_match('#^\.((?:[a-z0-9\-_]+\.?)+)$#s', $token, $varrefs)) +					{ +						// Allow checking if loops are set with .loopname +						// It is also possible to check the loop count by doing <!-- IF .loopname > 1 --> for example +						$blocks = explode('.', $varrefs[1]); + +						// If the block is nested, we have a reference that we can grab. +						// If the block is not nested, we just go and grab the block from _tpldata +						if (sizeof($blocks) > 1) +						{ +							$block = array_pop($blocks); +							$namespace = implode('.', $blocks); +							$varref = $this->generate_block_data_ref($namespace, true); + +							// Add the block reference for the last child. +							$varref .= "['" . $block . "']"; +						} +						else +						{ +							$varref = '$this->_tpldata'; + +							// Add the block reference for the last child. +							$varref .= "['" . $blocks[0] . "']"; +						} +						$token = "sizeof($varref)"; +					} +					else if (!empty($token)) +					{ +						$token = '(' . $token . ')'; +					} + +				break; +			} +		} + +		// If there are no valid tokens left or only control/compare characters left, we do skip this statement +		if (!sizeof($tokens) || str_replace(array(' ', '=', '!', '<', '>', '&', '|', '%', '(', ')'), '', implode('', $tokens)) == '') +		{ +			$tokens = array('false'); +		} +		return (($elseif) ? '} else if (' : 'if (') . (implode(' ', $tokens) . ') { '); +	} + +	/** +	* Compile DEFINE tags +	* @access private +	*/ +	function compile_tag_define($tag_args, $op) +	{ +		preg_match('#^((?:[a-z0-9\-_]+\.)+)?\$(?=[A-Z])([A-Z0-9_\-]*)(?: = (\'?)([^\']*)(\'?))?$#', $tag_args, $match); + +		if (empty($match[2]) || (!isset($match[4]) && $op)) +		{ +			return ''; +		} + +		if (!$op) +		{ +			return 'unset(' . (($match[1]) ? $this->generate_block_data_ref(substr($match[1], 0, -1), true, true) . '[\'' . $match[2] . '\']' : '$this->_tpldata[\'DEFINE\'][\'.\'][\'' . $match[2] . '\']') . ');'; +		} + +		// Are we a string? +		if ($match[3] && $match[5]) +		{ +			$match[4] = str_replace(array('\\\'', '\\\\', '\''), array('\'', '\\', '\\\''), $match[4]); + +			// Compile reference, we allow template variables in defines... +			$match[4] = $this->compile($match[4]); + +			// Now replace the php code +			$match[4] = "'" . str_replace(array('<?php echo ', '; ?>'), array("' . ", " . '"), $match[4]) . "'"; +		} +		else +		{ +			preg_match('#true|false|\.#i', $match[4], $type); + +			switch (strtolower($type[0])) +			{ +				case 'true': +				case 'false': +					$match[4] = strtoupper($match[4]); +				break; + +				case '.': +					$match[4] = doubleval($match[4]); +				break; + +				default: +					$match[4] = intval($match[4]); +				break; +			} +		} + +		return (($match[1]) ? $this->generate_block_data_ref(substr($match[1], 0, -1), true, true) . '[\'' . $match[2] . '\']' : '$this->_tpldata[\'DEFINE\'][\'.\'][\'' . $match[2] . '\']') . ' = ' . $match[4] . ';'; +	} + +	/** +	* Compile INCLUDE tag +	* @access private +	*/ +	function compile_tag_include($tag_args) +	{ +		// Process dynamic includes +		if ($tag_args[0] == '$') +		{ +			return "if (isset($tag_args)) { \$this->_tpl_include($tag_args); }"; +		} + +		return "\$this->_tpl_include('$tag_args');"; +	} + +	/** +	* Compile INCLUDE_PHP tag +	* @access private +	*/ +	function compile_tag_include_php($tag_args) +	{ +		return "\$this->_php_include('$tag_args');"; +	} + +	/** +	* parse expression +	* This is from Smarty +	* @access private +	*/ +	function _parse_is_expr($is_arg, $tokens) +	{ +		$expr_end = 0; +		$negate_expr = false; + +		if (($first_token = array_shift($tokens)) == 'not') +		{ +			$negate_expr = true; +			$expr_type = array_shift($tokens); +		} +		else +		{ +			$expr_type = $first_token; +		} + +		switch ($expr_type) +		{ +			case 'even': +				if (@$tokens[$expr_end] == 'by') +				{ +					$expr_end++; +					$expr_arg = $tokens[$expr_end++]; +					$expr = "!(($is_arg / $expr_arg) % $expr_arg)"; +				} +				else +				{ +					$expr = "!($is_arg & 1)"; +				} +			break; + +			case 'odd': +				if (@$tokens[$expr_end] == 'by') +				{ +					$expr_end++; +					$expr_arg = $tokens[$expr_end++]; +					$expr = "(($is_arg / $expr_arg) % $expr_arg)"; +				} +				else +				{ +					$expr = "($is_arg & 1)"; +				} +			break; + +			case 'div': +				if (@$tokens[$expr_end] == 'by') +				{ +					$expr_end++; +					$expr_arg = $tokens[$expr_end++]; +					$expr = "!($is_arg % $expr_arg)"; +				} +			break; +		} + +		if ($negate_expr) +		{ +			$expr = "!($expr)"; +		} + +		array_splice($tokens, 0, $expr_end, $expr); + +		return $tokens; +	} + +	/** +	* Generates a reference to the given variable inside the given (possibly nested) +	* block namespace. This is a string of the form: +	* ' . $this->_tpldata['parent'][$_parent_i]['$child1'][$_child1_i]['$child2'][$_child2_i]...['varname'] . ' +	* It's ready to be inserted into an "echo" line in one of the templates. +	* NOTE: expects a trailing "." on the namespace. +	* @access private +	*/ +	function generate_block_varref($namespace, $varname, $echo = true, $defop = false) +	{ +		// Strip the trailing period. +		$namespace = substr($namespace, 0, -1); + +		// Get a reference to the data block for this namespace. +		$varref = $this->generate_block_data_ref($namespace, true, $defop); +		// Prepend the necessary code to stick this in an echo line. + +		// Append the variable reference. +		$varref .= "['$varname']"; +		$varref = ($echo) ? "<?php echo $varref; ?>" : ((isset($varref)) ? $varref : ''); + +		return $varref; +	} + +	/** +	* Generates a reference to the array of data values for the given +	* (possibly nested) block namespace. This is a string of the form: +	* $this->_tpldata['parent'][$_parent_i]['$child1'][$_child1_i]['$child2'][$_child2_i]...['$childN'] +	* +	* If $include_last_iterator is true, then [$_childN_i] will be appended to the form shown above. +	* NOTE: does not expect a trailing "." on the blockname. +	* @access private +	*/ +	function generate_block_data_ref($blockname, $include_last_iterator, $defop = false) +	{ +		// Get an array of the blocks involved. +		$blocks = explode('.', $blockname); +		$blockcount = sizeof($blocks) - 1; + +		// DEFINE is not an element of any referenced variable, we must use _tpldata to access it +		if ($defop) +		{ +			$varref = '$this->_tpldata[\'DEFINE\']'; +			// Build up the string with everything but the last child. +			for ($i = 0; $i < $blockcount; $i++) +			{ +				$varref .= "['" . $blocks[$i] . "'][\$_" . $blocks[$i] . '_i]'; +			} +			// Add the block reference for the last child. +			$varref .= "['" . $blocks[$blockcount] . "']"; +			// Add the iterator for the last child if requried. +			if ($include_last_iterator) +			{ +				$varref .= '[$_' . $blocks[$blockcount] . '_i]'; +			} +			return $varref; +		} +		else if ($include_last_iterator) +		{ +			return '$_'. $blocks[$blockcount] . '_val'; +		} +		else +		{ +			return '$_'. $blocks[$blockcount - 1] . '_val[\''. $blocks[$blockcount]. '\']'; +		} +	} + +	/** +	* Write compiled file to cache directory +	* @access private +	*/ +	function compile_write($handle, $data) +	{ +		global $phpEx; + +		$filename = $this->template->cachepath . str_replace('/', '.', $this->template->filename[$handle]) . '.' . $phpEx; + +		$data = "<?php if (!defined('IN_PHPBB')) exit;" . ((strpos($data, '<?php') === 0) ? substr($data, 5) : ' ?>' . $data); + +		if ($fp = @fopen($filename, 'wb')) +		{ +			@flock($fp, LOCK_EX); +			@fwrite ($fp, $data); +			@flock($fp, LOCK_UN); +			@fclose($fp); + +			phpbb_chmod($filename, CHMOD_READ | CHMOD_WRITE); +		} + +		return; +	} +} + +?>
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