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Smarty_Compiler.class.php
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Smarty_Compiler.class.php
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<?php
/**
* Project: Smarty: the PHP compiling template engine
* File: Smarty_Compiler.class.php
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* @link http://smarty.php.net/
* @author Monte Ohrt <monte at ohrt dot com>
* @author Andrei Zmievski <andrei@php.net>
* @version 2.6.25-dev
* @copyright 2001-2005 New Digital Group, Inc.
* @package Smarty
*/
/* $Id$ */
/**
* Template compiling class
* @package Smarty
*/
class Smarty_Compiler extends Smarty {
// internal vars
/**#@+
* @access private
*/
var $_folded_blocks = array(); // keeps folded template blocks
var $_current_file = null; // the current template being compiled
var $_current_line_no = 1; // line number for error messages
var $_capture_stack = array(); // keeps track of nested capture buffers
var $_plugin_info = array(); // keeps track of plugins to load
var $_init_smarty_vars = false;
var $_permitted_tokens = array('true','false','yes','no','on','off','null');
var $_db_qstr_regexp = null; // regexps are setup in the constructor
var $_si_qstr_regexp = null;
var $_qstr_regexp = null;
var $_func_regexp = null;
var $_reg_obj_regexp = null;
var $_var_bracket_regexp = null;
var $_num_const_regexp = null;
var $_dvar_guts_regexp = null;
var $_dvar_regexp = null;
var $_cvar_regexp = null;
var $_svar_regexp = null;
var $_avar_regexp = null;
var $_mod_regexp = null;
var $_var_regexp = null;
var $_parenth_param_regexp = null;
var $_func_call_regexp = null;
var $_obj_ext_regexp = null;
var $_obj_start_regexp = null;
var $_obj_params_regexp = null;
var $_obj_call_regexp = null;
var $_cacheable_state = 0;
var $_cache_attrs_count = 0;
var $_nocache_count = 0;
var $_cache_serial = null;
var $_cache_include = null;
var $_strip_depth = 0;
var $_additional_newline = "\n";
/**#@-*/
/**
* The class constructor.
*/
public function __construct()
{
// matches double quoted strings:
// "foobar"
// "foo\"bar"
$this->_db_qstr_regexp = '"[^"\\\\]*(?:\\\\.[^"\\\\]*)*"';
// matches single quoted strings:
// 'foobar'
// 'foo\'bar'
$this->_si_qstr_regexp = '\'[^\'\\\\]*(?:\\\\.[^\'\\\\]*)*\'';
// matches single or double quoted strings
$this->_qstr_regexp = '(?:' . $this->_db_qstr_regexp . '|' . $this->_si_qstr_regexp . ')';
// matches bracket portion of vars
// [0]
// [foo]
// [$bar]
$this->_var_bracket_regexp = '\[\$?[\w\.]+\]';
// matches numerical constants
// 30
// -12
// 13.22
$this->_num_const_regexp = '(?:\-?\d+(?:\.\d+)?)';
// matches $ vars (not objects):
// $foo
// $foo.bar
// $foo.bar.foobar
// $foo[0]
// $foo[$bar]
// $foo[5][blah]
// $foo[5].bar[$foobar][4]
$this->_dvar_math_regexp = '(?:[\+\*\/\%]|(?:-(?!>)))';
$this->_dvar_math_var_regexp = '[\$\w\.\+\-\*\/\%\d\>\[\]]';
$this->_dvar_guts_regexp = '\w+(?:' . $this->_var_bracket_regexp
. ')*(?:\.\$?\w+(?:' . $this->_var_bracket_regexp . ')*)*(?:' . $this->_dvar_math_regexp . '(?:' . $this->_num_const_regexp . '|' . $this->_dvar_math_var_regexp . ')*)?';
$this->_dvar_regexp = '\$' . $this->_dvar_guts_regexp;
// matches config vars:
// #foo#
// #foobar123_foo#
$this->_cvar_regexp = '\#\w+\#';
// matches section vars:
// %foo.bar%
$this->_svar_regexp = '\%\w+\.\w+\%';
// matches all valid variables (no quotes, no modifiers)
$this->_avar_regexp = '(?:' . $this->_dvar_regexp . '|'
. $this->_cvar_regexp . '|' . $this->_svar_regexp . ')';
// matches valid variable syntax:
// $foo
// $foo
// #foo#
// #foo#
// "text"
// "text"
$this->_var_regexp = '(?:' . $this->_avar_regexp . '|' . $this->_qstr_regexp . ')';
// matches valid object call (one level of object nesting allowed in parameters):
// $foo->bar
// $foo->bar()
// $foo->bar("text")
// $foo->bar($foo, $bar, "text")
// $foo->bar($foo, "foo")
// $foo->bar->foo()
// $foo->bar->foo->bar()
// $foo->bar($foo->bar)
// $foo->bar($foo->bar())
// $foo->bar($foo->bar($blah,$foo,44,"foo",$foo[0].bar))
$this->_obj_ext_regexp = '\->(?:\$?' . $this->_dvar_guts_regexp . ')';
$this->_obj_restricted_param_regexp = '(?:'
. '(?:' . $this->_var_regexp . '|' . $this->_num_const_regexp . ')(?:' . $this->_obj_ext_regexp . '(?:\((?:(?:' . $this->_var_regexp . '|' . $this->_num_const_regexp . ')'
. '(?:\s*,\s*(?:' . $this->_var_regexp . '|' . $this->_num_const_regexp . '))*)?\))?)*)';
$this->_obj_single_param_regexp = '(?:\w+|' . $this->_obj_restricted_param_regexp . '(?:\s*,\s*(?:(?:\w+|'
. $this->_var_regexp . $this->_obj_restricted_param_regexp . ')))*)';
$this->_obj_params_regexp = '\((?:' . $this->_obj_single_param_regexp
. '(?:\s*,\s*' . $this->_obj_single_param_regexp . ')*)?\)';
$this->_obj_start_regexp = '(?:' . $this->_dvar_regexp . '(?:' . $this->_obj_ext_regexp . ')+)';
$this->_obj_call_regexp = '(?:' . $this->_obj_start_regexp . '(?:' . $this->_obj_params_regexp . ')?(?:' . $this->_dvar_math_regexp . '(?:' . $this->_num_const_regexp . '|' . $this->_dvar_math_var_regexp . ')*)?)';
// matches valid modifier syntax:
// |foo
// |@foo
// |foo:"bar"
// |foo:$bar
// |foo:"bar":$foobar
// |foo|bar
// |foo:$foo->bar
$this->_mod_regexp = '(?:\|@?\w+(?::(?:\w+|' . $this->_num_const_regexp . '|'
. $this->_obj_call_regexp . '|' . $this->_avar_regexp . '|' . $this->_qstr_regexp .'))*)';
// matches valid function name:
// foo123
// _foo_bar
$this->_func_regexp = '[a-zA-Z_]\w*';
// matches valid registered object:
// foo->bar
$this->_reg_obj_regexp = '[a-zA-Z_]\w*->[a-zA-Z_]\w*';
// matches valid parameter values:
// true
// $foo
// $foo|bar
// #foo#
// #foo#|bar
// "text"
// "text"|bar
// $foo->bar
$this->_param_regexp = '(?:\s*(?:' . $this->_obj_call_regexp . '|'
. $this->_var_regexp . '|' . $this->_num_const_regexp . '|\w+)(?>' . $this->_mod_regexp . '*)\s*)';
// matches valid parenthesised function parameters:
//
// "text"
// $foo, $bar, "text"
// $foo|bar, "foo"|bar, $foo->bar($foo)|bar
$this->_parenth_param_regexp = '(?:\((?:\w+|'
. $this->_param_regexp . '(?:\s*,\s*(?:(?:\w+|'
. $this->_param_regexp . ')))*)?\))';
// matches valid function call:
// foo()
// foo_bar($foo)
// _foo_bar($foo,"bar")
// foo123($foo,$foo->bar(),"foo")
$this->_func_call_regexp = '(?:' . $this->_func_regexp . '\s*(?:'
. $this->_parenth_param_regexp . '))';
}
/**
* compile a resource
*
* sets $compiled_content to the compiled source
* @param string $resource_name
* @param string $source_content
* @param string $compiled_content
* @return true
*/
function _compile_file($resource_name, $source_content, &$compiled_content)
{
if ($this->security) {
// do not allow php syntax to be executed unless specified
if ($this->php_handling == SMARTY_PHP_ALLOW &&
!$this->security_settings['PHP_HANDLING']) {
$this->php_handling = SMARTY_PHP_PASSTHRU;
}
}
$this->_load_filters();
$this->_current_file = $resource_name;
$this->_current_line_no = 1;
$ldq = preg_quote($this->left_delimiter, '~');
$rdq = preg_quote($this->right_delimiter, '~');
// run template source through prefilter functions
if (count($this->_plugins['prefilter']) > 0) {
foreach ($this->_plugins['prefilter'] as $filter_name => $prefilter) {
if ($prefilter === false) continue;
if ($prefilter[3] || is_callable($prefilter[0])) {
$source_content = call_user_func_array($prefilter[0],
array($source_content, &$this));
$this->_plugins['prefilter'][$filter_name][3] = true;
} else {
$this->_trigger_fatal_error("[plugin] prefilter '$filter_name' is not implemented");
}
}
}
/* fetch all special blocks */
$search = "~{$ldq}\*(.*?)\*{$rdq}|{$ldq}\s*literal\s*{$rdq}(.*?){$ldq}\s*/literal\s*{$rdq}|{$ldq}\s*php\s*{$rdq}(.*?){$ldq}\s*/php\s*{$rdq}~s";
preg_match_all($search, $source_content, $match, PREG_SET_ORDER);
$this->_folded_blocks = $match;
/* replace special blocks by "{php}" */
$source_content = preg_replace_callback($search, array($this,'_preg_callback')
, $source_content);
/* Gather all template tags. */
preg_match_all("~{$ldq}\s*(.*?)\s*{$rdq}~s", $source_content, $_match);
$template_tags = $_match[1];
/* Split content by template tags to obtain non-template content. */
$text_blocks = preg_split("~{$ldq}.*?{$rdq}~s", $source_content);
/* loop through text blocks */
for ($curr_tb = 0, $for_max = count($text_blocks); $curr_tb < $for_max; $curr_tb++) {
/* match anything resembling php tags */
if (preg_match_all('~(<\?(?:\w+|=)?|\?>|language\s*=\s*[\"\']?\s*php\s*[\"\']?)~is', $text_blocks[$curr_tb], $sp_match)) {
/* replace tags with placeholders to prevent recursive replacements */
$sp_match[1] = array_unique($sp_match[1]);
usort($sp_match[1], '_smarty_sort_length');
for ($curr_sp = 0, $for_max2 = count($sp_match[1]); $curr_sp < $for_max2; $curr_sp++) {
$text_blocks[$curr_tb] = str_replace($sp_match[1][$curr_sp],'%%%SMARTYSP'.$curr_sp.'%%%',$text_blocks[$curr_tb]);
}
/* process each one */
for ($curr_sp = 0, $for_max2 = count($sp_match[1]); $curr_sp < $for_max2; $curr_sp++) {
if ($this->php_handling == SMARTY_PHP_PASSTHRU) {
/* echo php contents */
$text_blocks[$curr_tb] = str_replace('%%%SMARTYSP'.$curr_sp.'%%%', '<?php echo \''.str_replace("'", "\'", $sp_match[1][$curr_sp]).'\'; ?>'."\n", $text_blocks[$curr_tb]);
} else if ($this->php_handling == SMARTY_PHP_QUOTE) {
/* quote php tags */
$text_blocks[$curr_tb] = str_replace('%%%SMARTYSP'.$curr_sp.'%%%', htmlspecialchars($sp_match[1][$curr_sp]), $text_blocks[$curr_tb]);
} else if ($this->php_handling == SMARTY_PHP_REMOVE) {
/* remove php tags */
$text_blocks[$curr_tb] = str_replace('%%%SMARTYSP'.$curr_sp.'%%%', '', $text_blocks[$curr_tb]);
} else {
/* SMARTY_PHP_ALLOW, but echo non php starting tags */
$sp_match[1][$curr_sp] = preg_replace('~(<\?(?!php|=|$))~i', '<?php echo \'\\1\'?>'."\n", $sp_match[1][$curr_sp]);
$text_blocks[$curr_tb] = str_replace('%%%SMARTYSP'.$curr_sp.'%%%', $sp_match[1][$curr_sp], $text_blocks[$curr_tb]);
}
}
}
}
/* Compile the template tags into PHP code. */
$compiled_tags = array();
for ($i = 0, $for_max = count($template_tags); $i < $for_max; $i++) {
$this->_current_line_no += substr_count($text_blocks[$i], "\n");
$compiled_tags[] = $this->_compile_tag($template_tags[$i]);
$this->_current_line_no += substr_count($template_tags[$i], "\n");
}
if (count($this->_tag_stack)>0) {
list($_open_tag, $_line_no) = end($this->_tag_stack);
$this->_syntax_error("unclosed tag \{$_open_tag} (opened line $_line_no).", E_USER_ERROR, __FILE__, __LINE__);
return;
}
/* Reformat $text_blocks between 'strip' and '/strip' tags,
removing spaces, tabs and newlines. */
$strip = false;
for ($i = 0, $for_max = count($compiled_tags); $i < $for_max; $i++) {
if ($compiled_tags[$i] == '{strip}') {
$compiled_tags[$i] = '';
$strip = true;
/* remove leading whitespaces */
$text_blocks[$i + 1] = ltrim($text_blocks[$i + 1]);
}
if ($strip) {
/* strip all $text_blocks before the next '/strip' */
for ($j = $i + 1; $j < $for_max; $j++) {
/* remove leading and trailing whitespaces of each line */
$text_blocks[$j] = preg_replace('![\t ]*[\r\n]+[\t ]*!', '', $text_blocks[$j]);
if ($compiled_tags[$j] == '{/strip}') {
/* remove trailing whitespaces from the last text_block */
$text_blocks[$j] = rtrim($text_blocks[$j]);
}
$text_blocks[$j] = "<?php echo '" . strtr($text_blocks[$j], array("'"=>"\'", "\\"=>"\\\\")) . "'; ?>";
if ($compiled_tags[$j] == '{/strip}') {
$compiled_tags[$j] = "\n"; /* slurped by php, but necessary
if a newline is following the closing strip-tag */
$strip = false;
$i = $j;
break;
}
}
}
}
$compiled_content = '';
$tag_guard = '%%%SMARTYOTG' . md5(uniqid(rand(), true)) . '%%%';
/* Interleave the compiled contents and text blocks to get the final result. */
for ($i = 0, $for_max = count($compiled_tags); $i < $for_max; $i++) {
if ($compiled_tags[$i] == '') {
// tag result empty, remove first newline from following text block
$text_blocks[$i+1] = preg_replace('~^(\r\n|\r|\n)~', '', $text_blocks[$i+1]);
}
// replace legit PHP tags with placeholder
$text_blocks[$i] = str_replace('<?', $tag_guard, $text_blocks[$i]);
$compiled_tags[$i] = str_replace('<?', $tag_guard, $compiled_tags[$i]);
$compiled_content .= $text_blocks[$i] . $compiled_tags[$i];
}
$compiled_content .= str_replace('<?', $tag_guard, $text_blocks[$i]);
// escape php tags created by interleaving
$compiled_content = str_replace('<?', "<?php echo '<?' ?>\n", $compiled_content);
$compiled_content = preg_replace("~(?<!')language\s*=\s*[\"\']?\s*php\s*[\"\']?~", "<?php echo 'language=php' ?>\n", $compiled_content);
// recover legit tags
$compiled_content = str_replace($tag_guard, '<?', $compiled_content);
// remove \n from the end of the file, if any
if (strlen($compiled_content) && (substr($compiled_content, -1) == "\n") ) {
$compiled_content = substr($compiled_content, 0, -1);
}
if (!empty($this->_cache_serial)) {
$compiled_content = "<?php \$this->_cache_serials['".$this->_cache_include."'] = '".$this->_cache_serial."'; ?>" . $compiled_content;
}
// run compiled template through postfilter functions
if (count($this->_plugins['postfilter']) > 0) {
foreach ($this->_plugins['postfilter'] as $filter_name => $postfilter) {
if ($postfilter === false) continue;
if ($postfilter[3] || is_callable($postfilter[0])) {
$compiled_content = call_user_func_array($postfilter[0],
array($compiled_content, &$this));
$this->_plugins['postfilter'][$filter_name][3] = true;
} else {
$this->_trigger_fatal_error("Smarty plugin error: postfilter '$filter_name' is not implemented");
}
}
}
// put header at the top of the compiled template
$template_header = "<?php /* Smarty version ".$this->_version.", created on ".strftime("%Y-%m-%d %H:%M:%S")."\n";
$template_header .= " compiled from ".strtr(urlencode($resource_name), array('%2F'=>'/', '%3A'=>':'))." */ ?>\n";
/* Emit code to load needed plugins. */
$this->_plugins_code = '';
if (count($this->_plugin_info)) {
$_plugins_params = "array('plugins' => array(";
foreach ($this->_plugin_info as $plugin_type => $plugins) {
foreach ($plugins as $plugin_name => $plugin_info) {
$_plugins_params .= "array('$plugin_type', '$plugin_name', '" . strtr($plugin_info[0], array("'" => "\\'", "\\" => "\\\\")) . "', $plugin_info[1], ";
$_plugins_params .= $plugin_info[2] ? 'true),' : 'false),';
}
}
$_plugins_params .= '))';
$plugins_code = "<?php require_once(SMARTY_CORE_DIR . 'core.load_plugins.php');\nsmarty_core_load_plugins($_plugins_params, \$this); ?>\n";
$template_header .= $plugins_code;
$this->_plugin_info = array();
$this->_plugins_code = $plugins_code;
}
if ($this->_init_smarty_vars) {
$template_header .= "<?php require_once(SMARTY_CORE_DIR . 'core.assign_smarty_interface.php');\nsmarty_core_assign_smarty_interface(null, \$this); ?>\n";
$this->_init_smarty_vars = false;
}
$compiled_content = $template_header . $compiled_content;
return true;
}
/**
* Compile a template tag
*
* @param string $template_tag
* @return string
*/
function _compile_tag($template_tag)
{
/* Matched comment. */
if (substr($template_tag, 0, 1) == '*' && substr($template_tag, -1) == '*')
return '';
/* Split tag into two three parts: command, command modifiers and the arguments. */
if(! preg_match('~^(?:(' . $this->_num_const_regexp . '|' . $this->_obj_call_regexp . '|' . $this->_var_regexp
. '|\/?' . $this->_reg_obj_regexp . '|\/?' . $this->_func_regexp . ')(' . $this->_mod_regexp . '*))
(?:\s+(.*))?$
~xs', $template_tag, $match)) {
$this->_syntax_error("unrecognized tag: $template_tag", E_USER_ERROR, __FILE__, __LINE__);
}
$tag_command = $match[1];
$tag_modifier = isset($match[2]) ? $match[2] : null;
$tag_args = isset($match[3]) ? $match[3] : null;
if (preg_match('~^' . $this->_num_const_regexp . '|' . $this->_obj_call_regexp . '|' . $this->_var_regexp . '$~', $tag_command)) {
/* tag name is a variable or object */
$_return = $this->_parse_var_props($tag_command . $tag_modifier);
return "<?php echo $_return; ?>" . $this->_additional_newline;
}
/* If the tag name is a registered object, we process it. */
if (preg_match('~^\/?' . $this->_reg_obj_regexp . '$~', $tag_command)) {
return $this->_compile_registered_object_tag($tag_command, $this->_parse_attrs($tag_args), $tag_modifier);
}
switch ($tag_command) {
case 'include':
return $this->_compile_include_tag($tag_args);
case 'include_php':
return $this->_compile_include_php_tag($tag_args);
case 'if':
$this->_push_tag('if');
return $this->_compile_if_tag($tag_args);
case 'else':
list($_open_tag) = end($this->_tag_stack);
if ($_open_tag != 'if' && $_open_tag != 'elseif')
$this->_syntax_error('unexpected {else}', E_USER_ERROR, __FILE__, __LINE__);
else
$this->_push_tag('else');
return '<?php else: ?>';
case 'elseif':
list($_open_tag) = end($this->_tag_stack);
if ($_open_tag != 'if' && $_open_tag != 'elseif')
$this->_syntax_error('unexpected {elseif}', E_USER_ERROR, __FILE__, __LINE__);
if ($_open_tag == 'if')
$this->_push_tag('elseif');
return $this->_compile_if_tag($tag_args, true);
case '/if':
$this->_pop_tag('if');
return '<?php endif; ?>';
case 'capture':
return $this->_compile_capture_tag(true, $tag_args);
case '/capture':
return $this->_compile_capture_tag(false);
case 'ldelim':
return $this->left_delimiter;
case 'rdelim':
return $this->right_delimiter;
case 'section':
$this->_push_tag('section');
return $this->_compile_section_start($tag_args);
case 'sectionelse':
$this->_push_tag('sectionelse');
return "<?php endfor; else: ?>";
break;
case '/section':
$_open_tag = $this->_pop_tag('section');
if ($_open_tag == 'sectionelse')
return "<?php endif; ?>";
else
return "<?php endfor; endif; ?>";
case 'foreach':
$this->_push_tag('foreach');
return $this->_compile_foreach_start($tag_args);
break;
case 'foreachelse':
$this->_push_tag('foreachelse');
return "<?php endforeach; else: ?>";
case '/foreach':
$_open_tag = $this->_pop_tag('foreach');
if ($_open_tag == 'foreachelse')
return "<?php endif; unset(\$_from); ?>";
else
return "<?php endforeach; endif; unset(\$_from); ?>";
break;
case 'strip':
case '/strip':
if (substr($tag_command, 0, 1)=='/') {
$this->_pop_tag('strip');
if (--$this->_strip_depth==0) { /* outermost closing {/strip} */
$this->_additional_newline = "\n";
return '{' . $tag_command . '}';
}
} else {
$this->_push_tag('strip');
if ($this->_strip_depth++==0) { /* outermost opening {strip} */
$this->_additional_newline = "";
return '{' . $tag_command . '}';
}
}
return '';
case 'php':
/* handle folded tags replaced by {php} */
$block = array_shift($this->_folded_blocks);
$this->_current_line_no += substr_count($block[0], "\n");
/* the number of matched elements in the regexp in _compile_file()
determins the type of folded tag that was found */
switch (count($block)) {
case 2: /* comment */
return '';
case 3: /* literal */
return "<?php echo '" . strtr($block[2], array("'"=>"\'", "\\"=>"\\\\")) . "'; ?>" . $this->_additional_newline;
case 4: /* php */
if ($this->security && !$this->security_settings['PHP_TAGS']) {
$this->_syntax_error("(secure mode) php tags not permitted", E_USER_WARNING, __FILE__, __LINE__);
return;
}
return '<?php ' . $block[3] .' ?>';
}
break;
case 'insert':
return $this->_compile_insert_tag($tag_args);
default:
if ($this->_compile_compiler_tag($tag_command, $tag_args, $output)) {
return $output;
} else if ($this->_compile_block_tag($tag_command, $tag_args, $tag_modifier, $output)) {
return $output;
} else if ($this->_compile_custom_tag($tag_command, $tag_args, $tag_modifier, $output)) {
return $output;
} else {
$this->_syntax_error("unrecognized tag '$tag_command'", E_USER_ERROR, __FILE__, __LINE__);
}
}
}
/**
* compile the custom compiler tag
*
* sets $output to the compiled custom compiler tag
* @param string $tag_command
* @param string $tag_args
* @param string $output
* @return boolean
*/
function _compile_compiler_tag($tag_command, $tag_args, &$output)
{
$found = false;
$have_function = true;
/*
* First we check if the compiler function has already been registered
* or loaded from a plugin file.
*/
if (isset($this->_plugins['compiler'][$tag_command])) {
$found = true;
$plugin_func = $this->_plugins['compiler'][$tag_command][0];
if (!is_callable($plugin_func)) {
$message = "compiler function '$tag_command' is not implemented";
$have_function = false;
}
}
/*
* Otherwise we need to load plugin file and look for the function
* inside it.
*/
else if ($plugin_file = $this->_get_plugin_filepath('compiler', $tag_command)) {
$found = true;
include_once $plugin_file;
$plugin_func = 'smarty_compiler_' . $tag_command;
if (!is_callable($plugin_func)) {
$message = "plugin function $plugin_func() not found in $plugin_file\n";
$have_function = false;
} else {
$this->_plugins['compiler'][$tag_command] = array($plugin_func, null, null, null, true);
}
}
/*
* True return value means that we either found a plugin or a
* dynamically registered function. False means that we didn't and the
* compiler should now emit code to load custom function plugin for this
* tag.
*/
if ($found) {
if ($have_function) {
$output = call_user_func_array($plugin_func, array($tag_args, &$this));
if($output != '') {
$output = '<?php ' . $this->_push_cacheable_state('compiler', $tag_command)
. $output
. $this->_pop_cacheable_state('compiler', $tag_command) . ' ?>';
}
} else {
$this->_syntax_error($message, E_USER_WARNING, __FILE__, __LINE__);
}
return true;
} else {
return false;
}
}
/**
* compile block function tag
*
* sets $output to compiled block function tag
* @param string $tag_command
* @param string $tag_args
* @param string $tag_modifier
* @param string $output
* @return boolean
*/
function _compile_block_tag($tag_command, $tag_args, $tag_modifier, &$output)
{
if (substr($tag_command, 0, 1) == '/') {
$start_tag = false;
$tag_command = substr($tag_command, 1);
} else
$start_tag = true;
$found = false;
$have_function = true;
/*
* First we check if the block function has already been registered
* or loaded from a plugin file.
*/
if (isset($this->_plugins['block'][$tag_command])) {
$found = true;
$plugin_func = $this->_plugins['block'][$tag_command][0];
if (!is_callable($plugin_func)) {
$message = "block function '$tag_command' is not implemented";
$have_function = false;
}
}
/*
* Otherwise we need to load plugin file and look for the function
* inside it.
*/
else if ($plugin_file = $this->_get_plugin_filepath('block', $tag_command)) {
$found = true;
include_once $plugin_file;
$plugin_func = 'smarty_block_' . $tag_command;
if (!function_exists($plugin_func)) {
$message = "plugin function $plugin_func() not found in $plugin_file\n";
$have_function = false;
} else {
$this->_plugins['block'][$tag_command] = array($plugin_func, null, null, null, true);
}
}
if (!$found) {
return false;
} else if (!$have_function) {
$this->_syntax_error($message, E_USER_WARNING, __FILE__, __LINE__);
return true;
}
/*
* Even though we've located the plugin function, compilation
* happens only once, so the plugin will still need to be loaded
* at runtime for future requests.
*/
$this->_add_plugin('block', $tag_command);
if ($start_tag)
$this->_push_tag($tag_command);
else
$this->_pop_tag($tag_command);
if ($start_tag) {
$output = '<?php ' . $this->_push_cacheable_state('block', $tag_command);
$attrs = $this->_parse_attrs($tag_args);
$_cache_attrs='';
$arg_list = $this->_compile_arg_list('block', $tag_command, $attrs, $_cache_attrs);
$output .= "$_cache_attrs\$this->_tag_stack[] = array('$tag_command', array(".implode(',', $arg_list).')); ';
$output .= '$_block_repeat=true;' . $this->_compile_plugin_call('block', $tag_command).'($this->_tag_stack[count($this->_tag_stack)-1][1], null, $this, $_block_repeat);';
$output .= 'while ($_block_repeat) { ob_start(); ?>';
} else {
$output = '<?php $_block_content = ob_get_contents(); ob_end_clean(); ';
$_out_tag_text = $this->_compile_plugin_call('block', $tag_command).'($this->_tag_stack[count($this->_tag_stack)-1][1], $_block_content, $this, $_block_repeat)';
if ($tag_modifier != '') {
$this->_parse_modifiers($_out_tag_text, $tag_modifier);
}
$output .= '$_block_repeat=false;echo ' . $_out_tag_text . '; } ';
$output .= " array_pop(\$this->_tag_stack); " . $this->_pop_cacheable_state('block', $tag_command) . '?>';
}
return true;
}
function _preg_callback ($matches) {
return $this->_quote_replace($this->left_delimiter)
. 'php'
. str_repeat("\n", substr_count($matches[1], "\n"))
. $this->_quote_replace($this->right_delimiter);
}
/**
* compile custom function tag
*
* @param string $tag_command
* @param string $tag_args
* @param string $tag_modifier
* @return string
*/
function _compile_custom_tag($tag_command, $tag_args, $tag_modifier, &$output)
{
$found = false;
$have_function = true;
/*
* First we check if the custom function has already been registered
* or loaded from a plugin file.
*/
if (isset($this->_plugins['function'][$tag_command])) {
$found = true;
$plugin_func = $this->_plugins['function'][$tag_command][0];
if (!is_callable($plugin_func)) {
$message = "custom function '$tag_command' is not implemented";
$have_function = false;
}
}
/*
* Otherwise we need to load plugin file and look for the function
* inside it.
*/
else if ($plugin_file = $this->_get_plugin_filepath('function', $tag_command)) {
$found = true;
include_once $plugin_file;
$plugin_func = 'smarty_function_' . $tag_command;
if (!function_exists($plugin_func)) {
$message = "plugin function $plugin_func() not found in $plugin_file\n";
$have_function = false;
} else {
$this->_plugins['function'][$tag_command] = array($plugin_func, null, null, null, true);
}
}
if (!$found) {
return false;
} else if (!$have_function) {
$this->_syntax_error($message, E_USER_WARNING, __FILE__, __LINE__);
return true;
}
/* declare plugin to be loaded on display of the template that
we compile right now */
$this->_add_plugin('function', $tag_command);
$_cacheable_state = $this->_push_cacheable_state('function', $tag_command);
$attrs = $this->_parse_attrs($tag_args);
$_cache_attrs = '';
$arg_list = $this->_compile_arg_list('function', $tag_command, $attrs, $_cache_attrs);
$output = $this->_compile_plugin_call('function', $tag_command).'(array('.implode(',', $arg_list)."), \$this)";
if($tag_modifier != '') {
$this->_parse_modifiers($output, $tag_modifier);
}
if($output != '') {
$output = '<?php ' . $_cacheable_state . $_cache_attrs . 'echo ' . $output . ';'
. $this->_pop_cacheable_state('function', $tag_command) . "?>" . $this->_additional_newline;
}
return true;
}
/**
* compile a registered object tag
*
* @param string $tag_command
* @param array $attrs
* @param string $tag_modifier
* @return string
*/
function _compile_registered_object_tag($tag_command, $attrs, $tag_modifier)
{
if (substr($tag_command, 0, 1) == '/') {
$start_tag = false;
$tag_command = substr($tag_command, 1);
} else {
$start_tag = true;
}
list($object, $obj_comp) = explode('->', $tag_command);
$arg_list = array();
if(count($attrs)) {
$_assign_var = false;
foreach ($attrs as $arg_name => $arg_value) {
if($arg_name == 'assign') {
$_assign_var = $arg_value;
unset($attrs['assign']);
continue;
}
if (is_bool($arg_value))
$arg_value = $arg_value ? 'true' : 'false';
$arg_list[] = "'$arg_name' => $arg_value";
}
}
if($this->_reg_objects[$object][2]) {
// smarty object argument format
$args = "array(".implode(',', (array)$arg_list)."), \$this";
} else {
// traditional argument format
$args = implode(',', array_values($attrs));
if (empty($args)) {
$args = '';
}
}
$prefix = '';
$postfix = '';
$newline = '';
if(!is_object($this->_reg_objects[$object][0])) {
$this->_trigger_fatal_error("registered '$object' is not an object" , $this->_current_file, $this->_current_line_no, __FILE__, __LINE__);
} elseif(!empty($this->_reg_objects[$object][1]) && !in_array($obj_comp, $this->_reg_objects[$object][1])) {
$this->_trigger_fatal_error("'$obj_comp' is not a registered component of object '$object'", $this->_current_file, $this->_current_line_no, __FILE__, __LINE__);
} elseif(method_exists($this->_reg_objects[$object][0], $obj_comp)) {
// method
if(in_array($obj_comp, $this->_reg_objects[$object][3])) {
// block method
if ($start_tag) {
$prefix = "\$this->_tag_stack[] = array('$obj_comp', $args); ";
$prefix .= "\$_block_repeat=true; \$this->_reg_objects['$object'][0]->$obj_comp(\$this->_tag_stack[count(\$this->_tag_stack)-1][1], null, \$this, \$_block_repeat); ";
$prefix .= "while (\$_block_repeat) { ob_start();";
$return = null;
$postfix = '';
} else {
$prefix = "\$_obj_block_content = ob_get_contents(); ob_end_clean(); \$_block_repeat=false;";
$return = "\$this->_reg_objects['$object'][0]->$obj_comp(\$this->_tag_stack[count(\$this->_tag_stack)-1][1], \$_obj_block_content, \$this, \$_block_repeat)";
$postfix = "} array_pop(\$this->_tag_stack);";
}
} else {
// non-block method
$return = "\$this->_reg_objects['$object'][0]->$obj_comp($args)";
}
} else {
// property
$return = "\$this->_reg_objects['$object'][0]->$obj_comp";
}
if($return != null) {
if($tag_modifier != '') {
$this->_parse_modifiers($return, $tag_modifier);
}
if(!empty($_assign_var)) {
$output = "\$this->assign('" . $this->_dequote($_assign_var) ."', $return);";
} else {
$output = 'echo ' . $return . ';';
$newline = $this->_additional_newline;
}
} else {
$output = '';
}
return '<?php ' . $prefix . $output . $postfix . "?>" . $newline;
}
/**
* Compile {insert ...} tag
*
* @param string $tag_args
* @return string
*/
function _compile_insert_tag($tag_args)
{
$attrs = $this->_parse_attrs($tag_args);
$name = $this->_dequote($attrs['name']);
if (empty($name)) {
return $this->_syntax_error("missing insert name", E_USER_ERROR, __FILE__, __LINE__);
}
if (!preg_match('~^\w+$~', $name)) {
return $this->_syntax_error("'insert: 'name' must be an insert function name", E_USER_ERROR, __FILE__, __LINE__);
}
if (!empty($attrs['script'])) {
$delayed_loading = true;
} else {
$delayed_loading = false;
}
foreach ($attrs as $arg_name => $arg_value) {
if (is_bool($arg_value))
$arg_value = $arg_value ? 'true' : 'false';
$arg_list[] = "'$arg_name' => $arg_value";
}
$this->_add_plugin('insert', $name, $delayed_loading);
$_params = "array('args' => array(".implode(', ', (array)$arg_list)."))";
return "<?php require_once(SMARTY_CORE_DIR . 'core.run_insert_handler.php');\necho smarty_core_run_insert_handler($_params, \$this); ?>" . $this->_additional_newline;
}
/**
* Compile {include ...} tag
*
* @param string $tag_args
* @return string
*/
function _compile_include_tag($tag_args)
{
$attrs = $this->_parse_attrs($tag_args);
$arg_list = array();
if (empty($attrs['file'])) {
$this->_syntax_error("missing 'file' attribute in include tag", E_USER_ERROR, __FILE__, __LINE__);
}
foreach ($attrs as $arg_name => $arg_value) {
if ($arg_name == 'file') {
$include_file = $arg_value;
continue;
} else if ($arg_name == 'assign') {
$assign_var = $arg_value;
continue;
}
if (is_bool($arg_value))
$arg_value = $arg_value ? 'true' : 'false';
$arg_list[] = "'$arg_name' => $arg_value";
}
$output = '<?php ';
if (isset($assign_var)) {
$output .= "ob_start();\n";
}
$output .=
"\$_smarty_tpl_vars = \$this->_tpl_vars;\n";