mirror of
https://github.com/smarty-php/smarty.git
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427 lines
21 KiB
PHP
427 lines
21 KiB
PHP
<?php
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/**
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* Smarty Internal Plugin Smarty Template Compiler Base
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*
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* This file contains the basic classes and methodes for compiling Smarty templates with lexer/parser
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*
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* @package Smarty
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* @subpackage Compiler
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* @author Uwe Tews
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*/
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/**
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* Main compiler class
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*/
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class Smarty_Internal_TemplateCompilerBase {
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// hash for nocache sections
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private $nocache_hash = null;
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// suppress generation of nocache code
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public $suppressNocacheProcessing = false;
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// compile tag objects
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static $_tag_objects = array();
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// tag stack
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public $_tag_stack = array();
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// current template
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public $template = null;
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// optional log of tag/attributes
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public $used_tags = array();
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/**
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* Initialize compiler
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*/
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public function __construct()
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{
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$this->nocache_hash = str_replace('.', '-', uniqid(rand(), true));
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}
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// abstract function doCompile($_content);
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/**
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* Methode to compile a Smarty template
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*
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* @param $template template object to compile
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* @return bool true if compiling succeeded, false if it failed
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*/
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public function compileTemplate($template)
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{
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if (empty($template->properties['nocache_hash'])) {
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$template->properties['nocache_hash'] = $this->nocache_hash;
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} else {
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$this->nocache_hash = $template->properties['nocache_hash'];
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}
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// flag for nochache sections
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$this->nocache = false;
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$this->tag_nocache = false;
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// save template object in compiler class
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$this->template = $template;
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$this->smarty->_current_file = $this->template->getTemplateFilepath();
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// template header code
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$template_header = '';
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if (!$template->suppressHeader) {
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$template_header .= "<?php /* Smarty version " . Smarty::SMARTY_VERSION . ", created on " . strftime("%Y-%m-%d %H:%M:%S") . "\n";
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$template_header .= " compiled from \"" . $this->template->getTemplateFilepath() . "\" */ ?>\n";
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}
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do {
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// flag for aborting current and start recompile
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$this->abort_and_recompile = false;
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// get template source
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$_content = $template->getTemplateSource();
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// run prefilter if required
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if (isset($this->smarty->autoload_filters['pre']) || isset($this->smarty->registered_filters['pre'])) {
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$template->template_source = $_content = Smarty_Internal_Filter_Handler::runFilter('pre', $_content, $template);
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}
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// on empty template just return header
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if ($_content == '') {
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if ($template->suppressFileDependency) {
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$template->compiled_template = '';
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} else {
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$template->compiled_template = $template_header . $template->createPropertyHeader();
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}
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return true;
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}
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// call compiler
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$_compiled_code = $this->doCompile($_content);
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} while ($this->abort_and_recompile);
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// return compiled code to template object
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if ($template->suppressFileDependency) {
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$template->compiled_template = $_compiled_code;
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} else {
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$template->compiled_template = $template_header . $template->createPropertyHeader() . $_compiled_code;
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}
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// run postfilter if required
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if (isset($this->smarty->autoload_filters['post']) || isset($this->smarty->registered_filters['post'])) {
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$template->compiled_template = Smarty_Internal_Filter_Handler::runFilter('post', $template->compiled_template, $template);
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}
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}
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/**
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* Compile Tag
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*
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* This is a call back from the lexer/parser
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* It executes the required compile plugin for the Smarty tag
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*
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* @param string $tag tag name
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* @param array $args array with tag attributes
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* @param array $parameter array with compilation parameter
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* @return string compiled code
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*/
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public function compileTag($tag, $args, $parameter = array())
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{
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// $args contains the attributes parsed and compiled by the lexer/parser
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// assume that tag does compile into code, but creates no HTML output
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$this->has_code = true;
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$this->has_output = false;
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// log tag/attributes
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if (isset($this->smarty->get_used_tags) && $this->smarty->get_used_tags) {
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$this->used_tags[] = array($tag,$args);
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}
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// check nocache option flag
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if (in_array("'nocache'",$args) || in_array(array('nocache'=>'true'),$args)
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|| in_array(array('nocache'=>'"true"'),$args) || in_array(array('nocache'=>"'true'"),$args)) {
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$this->tag_nocache = true;
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}
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// compile the smarty tag (required compile classes to compile the tag are autoloaded)
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if (($_output = $this->callTagCompiler($tag, $args, $parameter)) === false) {
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if (isset($this->smarty->template_functions[$tag])) {
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// template defined by {template} tag
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$args['_attr']['name'] = "'" . $tag . "'";
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$_output = $this->callTagCompiler('call', $args, $parameter);
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}
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}
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if ($_output !== false) {
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if ($_output !== true) {
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// did we get compiled code
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if ($this->has_code) {
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// Does it create output?
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if ($this->has_output) {
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$_output .= "\n";
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}
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// return compiled code
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return $_output;
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}
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}
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// tag did not produce compiled code
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return '';
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} else {
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// map_named attributes
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if (isset($args['_attr'])) {
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foreach ($args['_attr'] as $key => $attribute) {
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if (is_array($attribute)) {
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$args = array_merge($args, $attribute);
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}
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}
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}
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// not an internal compiler tag
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if (strlen($tag) < 6 || substr($tag, -5) != 'close') {
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// check if tag is a registered object
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if (isset($this->smarty->registered_objects[$tag]) && isset($parameter['object_methode'])) {
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$methode = $parameter['object_methode'];
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if (!in_array($methode, $this->smarty->registered_objects[$tag][3]) &&
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(empty($this->smarty->registered_objects[$tag][1]) || in_array($methode, $this->smarty->registered_objects[$tag][1]))) {
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return $this->callTagCompiler('private_object_function', $args, $parameter, $tag, $methode);
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} elseif (in_array($methode, $this->smarty->registered_objects[$tag][3])) {
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return $this->callTagCompiler('private_object_block_function', $args, $parameter, $tag, $methode);
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} else {
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return $this->trigger_template_error ('unallowed methode "' . $methode . '" in registered object "' . $tag . '"', $this->lex->taglineno);
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}
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}
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// check if tag is registered
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foreach (array(Smarty::PLUGIN_COMPILER, Smarty::PLUGIN_FUNCTION, Smarty::PLUGIN_BLOCK) as $type) {
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if (isset($this->smarty->registered_plugins[$type][$tag])) {
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// if compiler function plugin call it now
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if ($type == Smarty::PLUGIN_COMPILER) {
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$new_args = array();
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foreach ($args as $mixed) {
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$new_args = array_merge($new_args, $mixed);
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}
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if (!$this->smarty->registered_plugins[$type][$tag][1]) {
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$this->tag_nocache = true;
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}
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$function = $this->smarty->registered_plugins[$type][$tag][0];
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if (!is_array($function)) {
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return $function($new_args, $this);
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} else if (is_object($function[0])) {
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return $this->smarty->registered_plugins[$type][$tag][0][0]->$function[1]($new_args, $this);
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} else {
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return call_user_func_array($this->smarty->registered_plugins[$type][$tag][0], array($new_args, $this));
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}
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}
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// compile registered function or block function
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if ($type == Smarty::PLUGIN_FUNCTION || $type == Smarty::PLUGIN_BLOCK) {
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return $this->callTagCompiler('private_registered_' . $type, $args, $parameter, $tag);
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}
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}
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}
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// check plugins from plugins folder
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foreach ($this->smarty->plugin_search_order as $plugin_type) {
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if ($plugin_type == Smarty::PLUGIN_BLOCK && $this->smarty->loadPlugin('smarty_compiler_' . $tag)) {
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$plugin = 'smarty_compiler_' . $tag;
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if (is_callable($plugin)) {
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return $plugin($args, $this->smarty);
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}
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if (class_exists($plugin, false)) {
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$plugin_object = new $plugin;
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if (method_exists($plugin_object, 'compile')) {
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return $plugin_object->compile($args, $this);
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}
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}
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throw new SmartyException("Plugin \"{$tag}\" not callable");
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} else {
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if ($function = $this->getPlugin($tag, $plugin_type)) {
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return $this->callTagCompiler('private_' . $plugin_type . '_plugin', $args, $parameter, $tag, $function);
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}
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}
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}
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} else {
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// compile closing tag of block function
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$base_tag = substr($tag, 0, -5);
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// check if closing tag is a registered object
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if (isset($this->smarty->registered_objects[$base_tag]) && isset($parameter['object_methode'])) {
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$methode = $parameter['object_methode'];
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if (in_array($methode, $this->smarty->registered_objects[$base_tag][3])) {
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return $this->callTagCompiler('private_object_block_function', $args, $parameter, $tag, $methode);
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} else {
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return $this->trigger_template_error ('unallowed closing tag methode "' . $methode . '" in registered object "' . $base_tag . '"', $this->lex->taglineno);
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}
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}
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// registered block tag ?
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if (isset($this->smarty->registered_plugins[Smarty::PLUGIN_BLOCK][$base_tag])) {
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return $this->callTagCompiler('private_registered_block', $args, $parameter, $tag);
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}
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// block plugin?
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if ($function = $this->getPlugin($base_tag, Smarty::PLUGIN_BLOCK)) {
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return $this->callTagCompiler('private_block_plugin', $args, $parameter, $tag, $function);
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}
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if ($this->smarty->loadPlugin('smarty_compiler_' . $tag)) {
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$plugin = 'smarty_compiler_' . $tag;
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if (is_callable($plugin)) {
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return $plugin($args, $this->smarty);
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}
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if (class_exists($plugin, false)) {
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$plugin_object = new $plugin;
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if (method_exists($plugin_object, 'compile')) {
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return $plugin_object->compile($args, $this);
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}
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}
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throw new SmartyException("Plugin \"{$tag}\" not callable");
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}
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}
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$this->trigger_template_error ("unknown tag \"" . $tag . "\"", $this->lex->taglineno);
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}
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}
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/**
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* lazy loads internal compile plugin for tag and calls the compile methode
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*
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* compile objects cached for reuse.
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* class name format: Smarty_Internal_Compile_TagName
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* plugin filename format: Smarty_Internal_Tagname.php
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*
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* @param $tag string tag name
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* @param $args array with tag attributes
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* @param $param1 optional parameter
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* @param $param2 optional parameter
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* @param $param3 optional parameter
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* @return string compiled code
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*/
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public function callTagCompiler($tag, $args, $param1 = null, $param2 = null, $param3 = null)
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{
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// re-use object if already exists
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if (isset(self::$_tag_objects[$tag])) {
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// compile this tag
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return self::$_tag_objects[$tag]->compile($args, $this, $param1, $param2, $param3);
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}
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// lazy load internal compiler plugin
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$class_name = 'Smarty_Internal_Compile_' . $tag;
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if ($this->smarty->loadPlugin($class_name)) {
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// use plugin if found
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self::$_tag_objects[$tag] = new $class_name;
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// compile this tag
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return self::$_tag_objects[$tag]->compile($args, $this, $param1, $param2, $param3);
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}
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// no internal compile plugin for this tag
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return false;
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}
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/**
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* Check for plugins and return function name
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*
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* @param $pugin_name string name of plugin or function
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* @param $type string type of plugin
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* @return string call name of function
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*/
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public function getPlugin($plugin_name, $type)
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{
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$function = null;
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if ($this->template->caching && ($this->nocache || $this->tag_nocache)) {
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if (isset($this->template->required_plugins['nocache'][$plugin_name][$type])) {
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$function = $this->template->required_plugins['nocache'][$plugin_name][$type]['function'];
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} else if (isset($this->template->required_plugins['compiled'][$plugin_name][$type])) {
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$this->template->required_plugins['nocache'][$plugin_name][$type] = $this->template->required_plugins['compiled'][$plugin_name][$type];
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$function = $this->template->required_plugins['nocache'][$plugin_name][$type]['function'];
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}
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} else {
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if (isset($this->template->required_plugins['compiled'][$plugin_name][$type])) {
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$function = $this->template->required_plugins['compiled'][$plugin_name][$type]['function'];
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} else if (isset($this->template->required_plugins['compiled'][$plugin_name][$type])) {
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$this->template->required_plugins['compiled'][$plugin_name][$type] = $this->template->required_plugins['nocache'][$plugin_name][$type];
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$function = $this->template->required_plugins['compiled'][$plugin_name][$type]['function'];
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}
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}
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if (isset($function)) {
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if ($type == 'modifier') {
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$this->template->saved_modifier[$plugin_name] = true;
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}
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return $function;
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}
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// loop through plugin dirs and find the plugin
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$function = 'smarty_' . $type . '_' . $plugin_name;
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$found = false;
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foreach((array)$this->smarty->plugins_dir as $_plugin_dir) {
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$file = rtrim($_plugin_dir, '/\\') . DS . $type . '.' . $plugin_name . '.php';
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if (file_exists($file)) {
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// require_once($file);
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$found = true;
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break;
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}
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}
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if ($found) {
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if ($this->template->caching && ($this->nocache || $this->tag_nocache)) {
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$this->template->required_plugins['nocache'][$plugin_name][$type]['file'] = $file;
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$this->template->required_plugins['nocache'][$plugin_name][$type]['function'] = $function;
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} else {
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$this->template->required_plugins['compiled'][$plugin_name][$type]['file'] = $file;
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$this->template->required_plugins['compiled'][$plugin_name][$type]['function'] = $function;
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}
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if ($type == 'modifier') {
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$this->template->saved_modifier[$plugin_name] = true;
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}
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return $function;
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}
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if (is_callable($function)) {
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// plugin function is defined in the script
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return $function;
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}
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return false;
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}
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/**
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* Inject inline code for nocache template sections
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*
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* This method gets the content of each template element from the parser.
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* If the content is compiled code and it should be not cached the code is injected
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* into the rendered output.
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*
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* @param string $content content of template element
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* @param boolean $tag_nocache true if the parser detected a nocache situation
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* @param boolean $is_code true if content is compiled code
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* @return string content
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*/
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public function processNocacheCode ($content, $is_code)
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{
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// If the template is not evaluated and we have a nocache section and or a nocache tag
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if ($is_code && !empty($content)) {
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// generate replacement code
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if ((!$this->template->resource_object->isEvaluated || $this->template->forceNocache) && $this->template->caching && !$this->suppressNocacheProcessing &&
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($this->nocache || $this->tag_nocache || $this->template->forceNocache == 2)) {
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$this->template->has_nocache_code = true;
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$_output = str_replace("'", "\'", $content);
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$_output = "<?php echo '/*%%SmartyNocache:{$this->nocache_hash}%%*/" . $_output . "/*/%%SmartyNocache:{$this->nocache_hash}%%*/';?>";
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// make sure we include modifer plugins for nocache code
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if (isset($this->template->saved_modifier)) {
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foreach ($this->template->saved_modifier as $plugin_name => $dummy) {
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if (isset($this->template->required_plugins['compiled'][$plugin_name]['modifier'])) {
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$this->template->required_plugins['nocache'][$plugin_name]['modifier'] = $this->template->required_plugins['compiled'][$plugin_name]['modifier'];
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}
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}
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$this->template->saved_modifier = null;
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}
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} else {
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$_output = $content;
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}
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} else {
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$_output = $content;
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}
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$this->suppressNocacheProcessing = false;
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$this->tag_nocache = false;
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return $_output;
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}
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/**
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* display compiler error messages without dying
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*
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* If parameter $args is empty it is a parser detected syntax error.
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* In this case the parser is called to obtain information about expected tokens.
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*
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* If parameter $args contains a string this is used as error message
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*
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* @param $args string individual error message or null
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*/
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public function trigger_template_error($args = null, $line = null)
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{
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// get template source line which has error
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if (!isset($line)) {
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$line = $this->lex->line;
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}
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$match = preg_split("/\n/", $this->lex->data);
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$error_text = 'Syntax Error in template "' . $this->template->getTemplateFilepath() . '" on line ' . $line . ' "' . htmlspecialchars($match[$line-1]) . '" ';
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if (isset($args)) {
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// individual error message
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$error_text .= $args;
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} else {
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// expected token from parser
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foreach ($this->parser->yy_get_expected_tokens($this->parser->yymajor) as $token) {
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$exp_token = $this->parser->yyTokenName[$token];
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if (isset($this->lex->smarty_token_names[$exp_token])) {
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// token type from lexer
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$expect[] = '"' . $this->lex->smarty_token_names[$exp_token] . '"';
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} else {
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// otherwise internal token name
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$expect[] = $this->parser->yyTokenName[$token];
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}
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}
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// output parser error message
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$error_text .= ' - Unexpected "' . $this->lex->value . '", expected one of: ' . implode(' , ', $expect);
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}
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throw new SmartyCompilerException($error_text);
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}
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}
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?>
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