<?php
/**
* Smarty Internal Plugin Smarty Template Compiler Base
*
* This file contains the basic classes and methodes for compiling Smarty templates with lexer/parser
*
* @package Smarty
* @subpackage Compiler
* @author Uwe Tews
*/
/**
* Main abstract compiler class
*
* @package Smarty
* @subpackage Compiler
*/
abstract class Smarty_Internal_TemplateCompilerBase {
/**
* hash for nocache sections
*
* @var mixed
*/
private $nocache_hash = null;
/**
* suppress generation of nocache code
*
* @var bool
*/
public $suppressNocacheProcessing = false;
/**
* suppress generation of merged template code
*
* @var bool
*/
public $suppressMergedTemplates = false;
/**
* compile tag objects
*
* @var array
*/
public static $_tag_objects = array();
/**
* tag stack
*
* @var array
*/
public $_tag_stack = array();
/**
* current template
*
* @var Smarty_Internal_Template
*/
public $template = null;
/**
* merged templates
*
* @var array
*/
public $merged_templates = array();
/**
* flag when compiling {block}
*
* @var bool
*/
public $inheritance = false;
/**
* plugins loaded by default plugin handler
*
* @var array
*/
public $default_handler_plugins = array();
/**
* saved preprocessed modifier list
*
* @var mixed
*/
public $default_modifier_list = null;
/**
* force compilation of complete template as nocache
* @var boolean
*/
public $forceNocache = false;
/**
* suppress Smarty header code in compiled template
* @var bool
*/
public $suppressHeader = false;
/**
* suppress template property header code in compiled template
* @var bool
*/
public $suppressTemplatePropertyHeader = false;
/**
* flag if compiled template file shall we written
* @var bool
*/
public $write_compiled_code = true;
/**
* flag if currently a template function is compiled
* @var bool
*/
public $compiles_template_function = false;
/**
* called subfuntions from template function
* @var array
*/
public $called_functions = array();
/**
* flags for used modifier plugins
* @var array
*/
public $modifier_plugins = array();
/**
* type of already compiled modifier
* @var array
*/
public $known_modifier_type = array();
/**
* Methode to compile a Smarty template
*
* @param mixed $_content template source
* @return bool true if compiling succeeded, false if it failed
*/
abstract protected function doCompile($_content);
/**
* Initialize compiler
*/
public function __construct() {
$this->nocache_hash = str_replace('.', '-', uniqid(rand(), true));
}
/**
* Method to compile a Smarty template
*
* @param Smarty_Internal_Template $template template object to compile
* @return bool true if compiling succeeded, false if it failed
*/
public function compileTemplate(Smarty_Internal_Template $template) {
if (empty($template->properties['nocache_hash'])) {
$template->properties['nocache_hash'] = $this->nocache_hash;
} else {
$this->nocache_hash = $template->properties['nocache_hash'];
}
// flag for nochache sections
$this->nocache = false;
$this->tag_nocache = false;
// save template object in compiler class
$this->template = $template;
// reset has noche code flag
$this->template->has_nocache_code = false;
$this->smarty->_current_file = $saved_filepath = $this->template->source->filepath;
// template header code
$template_header = '';
if (!$this->suppressHeader) {
$template_header .= "<?php /* Smarty version " . Smarty::SMARTY_VERSION . ", created on " . strftime("%Y-%m-%d %H:%M:%S") . "\n";
$template_header .= " compiled from \"" . $this->template->source->filepath . "\" */ ?>\n";
}
do {
// flag for aborting current and start recompile
$this->abort_and_recompile = false;
// get template source
$_content = $template->source->content;
// run prefilter if required
if (isset($this->smarty->autoload_filters['pre']) || isset($this->smarty->registered_filters['pre'])) {
$_content = Smarty_Internal_Filter_Handler::runFilter('pre', $_content, $template);
}
// on empty template just return header
if ($_content == '') {
if ($this->suppressTemplatePropertyHeader) {
$code = '';
} else {
$code = $template_header . $template->createTemplateCodeFrame();
}
return $code;
}
// call compiler
$_compiled_code = $this->doCompile($_content);
} while ($this->abort_and_recompile);
$this->template->source->filepath = $saved_filepath;
// free memory
unset($this->parser->root_buffer, $this->parser->current_buffer, $this->parser, $this->lex, $this->template);
self::$_tag_objects = array();
// return compiled code to template object
$merged_code = '';
if (!$this->suppressMergedTemplates && !empty($this->merged_templates)) {
foreach ($this->merged_templates as $code) {
$merged_code .= $code;
}
// run postfilter if required on merged code
if (isset($this->smarty->autoload_filters['post']) || isset($this->smarty->registered_filters['post'])) {
$merged_code = Smarty_Internal_Filter_Handler::runFilter('post', $merged_code, $template);
}
}
// run postfilter if required on compiled template code
if (isset($this->smarty->autoload_filters['post']) || isset($this->smarty->registered_filters['post'])) {
$_compiled_code = Smarty_Internal_Filter_Handler::runFilter('post', $_compiled_code, $template);
}
if ($this->suppressTemplatePropertyHeader) {
$code = $_compiled_code . $merged_code;
} else {
$code = $template_header . $template->createTemplateCodeFrame($_compiled_code) . $merged_code;
}
// unset content because template inheritance could have replace source with parent code
unset ($template->source->content);
return $code;
}
/**
* Compile Tag
*
* This is a call back from the lexer/parser
* It executes the required compile plugin for the Smarty tag
*
* @param string $tag tag name
* @param array $args array with tag attributes
* @param array $parameter array with compilation parameter
* @return string compiled code
*/
public function compileTag($tag, $args, $parameter = array()) {
// $args contains the attributes parsed and compiled by the lexer/parser
// assume that tag does compile into code, but creates no HTML output
$this->has_code = true;
$this->has_output = false;
// log tag/attributes
if (isset($this->smarty->get_used_tags) && $this->smarty->get_used_tags) {
$this->template->used_tags[] = array($tag, $args);
}
// check nocache option flag
if (in_array("'nocache'", $args) || in_array(array('nocache' => 'true'), $args)
|| in_array(array('nocache' => '"true"'), $args) || in_array(array('nocache' => "'true'"), $args)) {
$this->tag_nocache = true;
}
// compile the smarty tag (required compile classes to compile the tag are autoloaded)
if (($_output = $this->callTagCompiler($tag, $args, $parameter)) === false) {
if (isset($this->smarty->template_functions[$tag])) {
// template defined by {template} tag
$args['_attr']['name'] = "'" . $tag . "'";
$_output = $this->callTagCompiler('call', $args, $parameter);
}
}
if ($_output !== false) {
if ($_output !== true) {
// did we get compiled code
if ($this->has_code) {
// Does it create output?
if ($this->has_output) {
$_output .= "\n";
}
// return compiled code
return $_output;
}
}
// tag did not produce compiled code
return '';
} else {
// map_named attributes
if (isset($args['_attr'])) {
foreach ($args['_attr'] as $key => $attribute) {
if (is_array($attribute)) {
$args = array_merge($args, $attribute);
}
}
}
// not an internal compiler tag
if (strlen($tag) < 6 || substr($tag, -5) != 'close') {
// check if tag is a registered object
if (isset($this->smarty->registered_objects[$tag]) && isset($parameter['object_methode'])) {
$methode = $parameter['object_methode'];
if (!in_array($methode, $this->smarty->registered_objects[$tag][3]) &&
(empty($this->smarty->registered_objects[$tag][1]) || in_array($methode, $this->smarty->registered_objects[$tag][1]))) {
return $this->callTagCompiler('private_object_function', $args, $parameter, $tag, $methode);
} elseif (in_array($methode, $this->smarty->registered_objects[$tag][3])) {
return $this->callTagCompiler('private_object_block_function', $args, $parameter, $tag, $methode);
} else {
return $this->trigger_template_error('unallowed methode "' . $methode . '" in registered object "' . $tag . '"', $this->lex->taglineno);
}
}
// check if tag is registered
foreach (array(Smarty::PLUGIN_COMPILER, Smarty::PLUGIN_FUNCTION, Smarty::PLUGIN_BLOCK) as $plugin_type) {
if (isset($this->smarty->registered_plugins[$plugin_type][$tag])) {
// if compiler function plugin call it now
if ($plugin_type == Smarty::PLUGIN_COMPILER) {
$new_args = array();
foreach ($args as $key => $mixed) {
if (is_array($mixed)) {
$new_args = array_merge($new_args, $mixed);
} else {
$new_args[$key] = $mixed;
}
}
if (!$this->smarty->registered_plugins[$plugin_type][$tag][1]) {
$this->tag_nocache = true;
}
$function = $this->smarty->registered_plugins[$plugin_type][$tag][0];
if (!is_array($function)) {
return $function($new_args, $this);
} else if (is_object($function[0])) {
return $this->smarty->registered_plugins[$plugin_type][$tag][0][0]->$function[1]($new_args, $this);
} else {
return call_user_func_array($function, array($new_args, $this));
}
}
// compile registered function or block function
if ($plugin_type == Smarty::PLUGIN_FUNCTION || $plugin_type == Smarty::PLUGIN_BLOCK) {
return $this->callTagCompiler('private_registered_' . $plugin_type, $args, $parameter, $tag);
}
}
}
// check plugins from plugins folder
foreach ($this->smarty->plugin_search_order as $plugin_type) {
if ($plugin_type == Smarty::PLUGIN_BLOCK && $this->smarty->loadPlugin('smarty_compiler_' . $tag) && (!isset($this->smarty->security_policy) || $this->smarty->security_policy->isTrustedTag($tag, $this))) {
$plugin = 'smarty_compiler_' . $tag;
if (is_callable($plugin)) {
// convert arguments format for old compiler plugins
$new_args = array();
foreach ($args as $key => $mixed) {
if (is_array($mixed)) {
$new_args = array_merge($new_args, $mixed);
} else {
$new_args[$key] = $mixed;
}
}
return $plugin($new_args, $this->smarty);
}
if (class_exists($plugin, false)) {
$plugin_object = new $plugin;
if (method_exists($plugin_object, 'compile')) {
return $plugin_object->compile($args, $this);
}
}
throw new SmartyException("Plugin \"{$tag}\" not callable");
} else {
if ($function = $this->getPlugin($tag, $plugin_type)) {
if (!isset($this->smarty->security_policy) || $this->smarty->security_policy->isTrustedTag($tag, $this)) {
return $this->callTagCompiler('private_' . $plugin_type . '_plugin', $args, $parameter, $tag, $function);
}
}
}
}
if (is_callable($this->smarty->default_plugin_handler_func)) {
$found = false;
// look for already resolved tags
foreach ($this->smarty->plugin_search_order as $plugin_type) {
if (isset($this->default_handler_plugins[$plugin_type][$tag])) {
$found = true;
break;
}
}
if (!$found) {
// call default handler
foreach ($this->smarty->plugin_search_order as $plugin_type) {
if ($this->getPluginFromDefaultHandler($tag, $plugin_type)) {
$found = true;
break;
}
}
}
if ($found) {
// if compiler function plugin call it now
if ($plugin_type == Smarty::PLUGIN_COMPILER) {
$new_args = array();
foreach ($args as $mixed) {
$new_args = array_merge($new_args, $mixed);
}
$function = $this->default_handler_plugins[$plugin_type][$tag][0];
if (!is_array($function)) {
return $function($new_args, $this);
} else if (is_object($function[0])) {
return $this->default_handler_plugins[$plugin_type][$tag][0][0]->$function[1]($new_args, $this);
} else {
return call_user_func_array($function, array($new_args, $this));
}
} else {
return $this->callTagCompiler('private_registered_' . $plugin_type, $args, $parameter, $tag);
}
}
}
} else {
// compile closing tag of block function
$base_tag = substr($tag, 0, -5);
// check if closing tag is a registered object
if (isset($this->smarty->registered_objects[$base_tag]) && isset($parameter['object_methode'])) {
$methode = $parameter['object_methode'];
if (in_array($methode, $this->smarty->registered_objects[$base_tag][3])) {
return $this->callTagCompiler('private_object_block_function', $args, $parameter, $tag, $methode);
} else {
return $this->trigger_template_error('unallowed closing tag methode "' . $methode . '" in registered object "' . $base_tag . '"', $this->lex->taglineno);
}
}
// registered block tag ?
if (isset($this->smarty->registered_plugins[Smarty::PLUGIN_BLOCK][$base_tag]) || isset($this->default_handler_plugins[Smarty::PLUGIN_BLOCK][$base_tag])) {
return $this->callTagCompiler('private_registered_block', $args, $parameter, $tag);
}
// block plugin?
if ($function = $this->getPlugin($base_tag, Smarty::PLUGIN_BLOCK)) {
return $this->callTagCompiler('private_block_plugin', $args, $parameter, $tag, $function);
}
// registered compiler plugin ?
if (isset($this->smarty->registered_plugins[Smarty::PLUGIN_COMPILER][$tag])) {
// if compiler function plugin call it now
$args = array();
if (!$this->smarty->registered_plugins[Smarty::PLUGIN_COMPILER][$tag][1]) {
$this->tag_nocache = true;
}
$function = $this->smarty->registered_plugins[Smarty::PLUGIN_COMPILER][$tag][0];
if (!is_array($function)) {
return $function($args, $this);
} else if (is_object($function[0])) {
return $this->smarty->registered_plugins[Smarty::PLUGIN_COMPILER][$tag][0][0]->$function[1]($args, $this);
} else {
return call_user_func_array($function, array($args, $this));
}
}
if ($this->smarty->loadPlugin('smarty_compiler_' . $tag)) {
$plugin = 'smarty_compiler_' . $tag;
if (is_callable($plugin)) {
return $plugin($args, $this->smarty);
}
if (class_exists($plugin, false)) {
$plugin_object = new $plugin;
if (method_exists($plugin_object, 'compile')) {
return $plugin_object->compile($args, $this);
}
}
throw new SmartyException("Plugin \"{$tag}\" not callable");
}
}
$this->trigger_template_error("unknown tag \"" . $tag . "\"", $this->lex->taglineno);
}
}
/**
* lazy loads internal compile plugin for tag and calls the compile methode
*
* compile objects cached for reuse.
* class name format: Smarty_Internal_Compile_TagName
* plugin filename format: Smarty_Internal_Tagname.php
*
* @param string $tag tag name
* @param array $args list of tag attributes
* @param mixed $param1 optional parameter
* @param mixed $param2 optional parameter
* @param mixed $param3 optional parameter
* @return string compiled code
*/
public function callTagCompiler($tag, $args, $param1 = null, $param2 = null, $param3 = null) {
// re-use object if already exists
if (isset(self::$_tag_objects[$tag])) {
// compile this tag
return self::$_tag_objects[$tag]->compile($args, $this, $param1, $param2, $param3);
}
// lazy load internal compiler plugin
$class_name = 'Smarty_Internal_Compile_' . $tag;
if ($this->smarty->loadPlugin($class_name)) {
// check if tag allowed by security
if (!isset($this->smarty->security_policy) || $this->smarty->security_policy->isTrustedTag($tag, $this)) {
// use plugin if found
self::$_tag_objects[$tag] = new $class_name;
// compile this tag
return self::$_tag_objects[$tag]->compile($args, $this, $param1, $param2, $param3);
}
}
// no internal compile plugin for this tag
return false;
}
/**
* Check for plugins and return function name
*
* @param string $pugin_name name of plugin or function
* @param string $plugin_type type of plugin
* @return string call name of function
*/
public function getPlugin($plugin_name, $plugin_type) {
$function = null;
if ($this->template->caching && ($this->nocache || $this->tag_nocache)) {
if (isset($this->template->required_plugins['nocache'][$plugin_name][$plugin_type])) {
$function = $this->template->required_plugins['nocache'][$plugin_name][$plugin_type]['function'];
} else if (isset($this->template->required_plugins['compiled'][$plugin_name][$plugin_type])) {
$this->template->required_plugins['nocache'][$plugin_name][$plugin_type] = $this->template->required_plugins['compiled'][$plugin_name][$plugin_type];
$function = $this->template->required_plugins['nocache'][$plugin_name][$plugin_type]['function'];
}
} else {
if (isset($this->template->required_plugins['compiled'][$plugin_name][$plugin_type])) {
$function = $this->template->required_plugins['compiled'][$plugin_name][$plugin_type]['function'];
} else if (isset($this->template->required_plugins['nocache'][$plugin_name][$plugin_type])) {
$this->template->required_plugins['compiled'][$plugin_name][$plugin_type] = $this->template->required_plugins['nocache'][$plugin_name][$plugin_type];
$function = $this->template->required_plugins['compiled'][$plugin_name][$plugin_type]['function'];
}
}
if (isset($function)) {
if ($plugin_type == 'modifier') {
$this->modifier_plugins[$plugin_name] = true;
}
return $function;
}
// loop through plugin dirs and find the plugin
$function = 'smarty_' . $plugin_type . '_' . $plugin_name;
$file = $this->smarty->loadPlugin($function, false);
if (is_string($file)) {
if ($this->template->caching && ($this->nocache || $this->tag_nocache)) {
$this->template->required_plugins['nocache'][$plugin_name][$plugin_type]['file'] = $file;
$this->template->required_plugins['nocache'][$plugin_name][$plugin_type]['function'] = $function;
} else {
$this->template->required_plugins['compiled'][$plugin_name][$plugin_type]['file'] = $file;
$this->template->required_plugins['compiled'][$plugin_name][$plugin_type]['function'] = $function;
}
if ($plugin_type == 'modifier') {
$this->modifier_plugins[$plugin_name] = true;
}
return $function;
}
if (is_callable($function)) {
// plugin function is defined in the script
return $function;
}
return false;
}
/**
* Check for plugins by default plugin handler
*
* @param string $tag name of tag
* @param string $plugin_type type of plugin
* @return boolean true if found
*/
public function getPluginFromDefaultHandler($tag, $plugin_type) {
$callback = null;
$script = null;
$cacheable = true;
$result = call_user_func_array(
$this->smarty->default_plugin_handler_func, array($tag, $plugin_type, $this->template, &$callback, &$script, &$cacheable)
);
if ($result) {
$this->tag_nocache = $this->tag_nocache || !$cacheable;
if ($script !== null) {
if (is_file($script)) {
if ($this->template->caching && ($this->nocache || $this->tag_nocache)) {
$this->template->required_plugins['nocache'][$tag][$plugin_type]['file'] = $script;
$this->template->required_plugins['nocache'][$tag][$plugin_type]['function'] = $callback;
} else {
$this->template->required_plugins['compiled'][$tag][$plugin_type]['file'] = $script;
$this->template->required_plugins['compiled'][$tag][$plugin_type]['function'] = $callback;
}
include_once $script;
} else {
$this->trigger_template_error("Default plugin handler: Returned script file \"{$script}\" for \"{$tag}\" not found");
}
}
if (!is_string($callback) && !(is_array($callback) && is_string($callback[0]) && is_string($callback[1]))) {
$this->trigger_template_error("Default plugin handler: Returned callback for \"{$tag}\" must be a static function name or array of class and function name");
}
if (is_callable($callback)) {
$this->default_handler_plugins[$plugin_type][$tag] = array($callback, true, array());
return true;
} else {
$this->trigger_template_error("Default plugin handler: Returned callback for \"{$tag}\" not callable");
}
}
return false;
}
/**
* Inject inline code for nocache template sections
*
* This method gets the content of each template element from the parser.
* If the content is compiled code and it should be not cached the code is injected
* into the rendered output.
*
* @param string $content content of template element
* @param boolean $is_code true if content is compiled code
* @return string content
*/
public function processNocacheCode($content, $is_code) {
// If the template is not evaluated and we have a nocache section and or a nocache tag
if ($is_code && !empty($content)) {
// generate replacement code
if ((!($this->template->source->recompiled) || $this->forceNocache) && $this->template->caching && !$this->suppressNocacheProcessing &&
($this->nocache || $this->tag_nocache || $this->forceNocache == 2)) {
$this->template->has_nocache_code = true;
$_output = addcslashes($content,'\'\\');
$_output = str_replace("^#^", "'", $_output);
$_output = "<?php echo '/*%%SmartyNocache:{$this->nocache_hash}%%*/" . $_output . "/*/%%SmartyNocache:{$this->nocache_hash}%%*/';?>\n";
// make sure we include modifer plugins for nocache code
foreach ($this->modifier_plugins as $plugin_name => $dummy) {
if (isset($this->template->required_plugins['compiled'][$plugin_name]['modifier'])) {
$this->template->required_plugins['nocache'][$plugin_name]['modifier'] = $this->template->required_plugins['compiled'][$plugin_name]['modifier'];
}
}
} else {
$_output = $content;
}
} else {
$_output = $content;
}
$this->modifier_plugins = array();
$this->suppressNocacheProcessing = false;
$this->tag_nocache = false;
return $_output;
}
/**
* display compiler error messages without dying
*
* If parameter $args is empty it is a parser detected syntax error.
* In this case the parser is called to obtain information about expected tokens.
*
* If parameter $args contains a string this is used as error message
*
* @param string $args individual error message or null
* @param string $line line-number
* @throws SmartyCompilerException when an unexpected token is found
*/
public function trigger_template_error($args = null, $line = null) {
// get template source line which has error
if (!isset($line)) {
$line = $this->lex->line;
}
$match = preg_split("/\n/", $this->lex->data);
$error_text = 'Syntax Error in template "' . $this->template->source->filepath . '" on line ' . $line . ' "' . htmlspecialchars(trim(preg_replace('![\t\r\n]+!', ' ', $match[$line - 1]))) . '" ';
if (isset($args)) {
// individual error message
$error_text .= $args;
} else {
// expected token from parser
$error_text .= ' - Unexpected "' . $this->lex->value . '"';
if (count($this->parser->yy_get_expected_tokens($this->parser->yymajor)) <= 4) {
foreach ($this->parser->yy_get_expected_tokens($this->parser->yymajor) as $token) {
$exp_token = $this->parser->yyTokenName[$token];
if (isset($this->lex->smarty_token_names[$exp_token])) {
// token type from lexer
$expect[] = '"' . $this->lex->smarty_token_names[$exp_token] . '"';
} else {
// otherwise internal token name
$expect[] = $this->parser->yyTokenName[$token];
}
}
$error_text .= ', expected one of: ' . implode(' , ', $expect);
}
}
throw new SmartyCompilerException($error_text);
}
}
?>