Просмотр файла mch-lib/sys/libs/Smarty_Compiler.class.php

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  1. <?php
  2.  
  3. /**
  4.  * Project:     Smarty: the PHP compiling template engine
  5.  * File:        Smarty_Compiler.class.php
  6.  *
  7.  * This library is free software; you can redistribute it and/or
  8.  * modify it under the terms of the GNU Lesser General Public
  9.  * License as published by the Free Software Foundation; either
  10.  * version 2.1 of the License, or (at your option) any later version.
  11.  *
  12.  * This library is distributed in the hope that it will be useful,
  13.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15.  * Lesser General Public License for more details.
  16.  *
  17.  * You should have received a copy of the GNU Lesser General Public
  18.  * License along with this library; if not, write to the Free Software
  19.  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20.  *
  21.  * @link http://smarty.php.net/
  22.  * @author Monte Ohrt <monte at ohrt dot com>
  23.  * @author Andrei Zmievski <andrei@php.net>
  24.  * @version 2.6.19
  25.  * @copyright 2001-2005 New Digital Group, Inc.
  26.  * @package Smarty
  27.  */
  28.  
  29. /* $Id: Smarty_Compiler.class.php 2736 2007-09-16 14:47:53Z mohrt $ */
  30.  
  31. /**
  32.  * Template compiling class
  33.  * @package Smarty
  34.  */
  35. class Smarty_Compiler extends Smarty {
  36.  
  37.     // internal vars
  38.     /**#@+
  39.      * @access private
  40.      */
  41.     var $_folded_blocks         =   array();    // keeps folded template blocks
  42.     var $_current_file          =   null;       // the current template being compiled
  43.     var $_current_line_no       =   1;          // line number for error messages
  44.     var $_capture_stack         =   array();    // keeps track of nested capture buffers
  45.     var $_plugin_info           =   array();    // keeps track of plugins to load
  46.     var $_init_smarty_vars      =   false;
  47.     var $_permitted_tokens      =   array('true','false','yes','no','on','off','null');
  48.     var $_db_qstr_regexp        =   null;        // regexps are setup in the constructor
  49.     var $_si_qstr_regexp        =   null;
  50.     var $_qstr_regexp           =   null;
  51.     var $_func_regexp           =   null;
  52.     var $_reg_obj_regexp        =   null;
  53.     var $_var_bracket_regexp    =   null;
  54.     var $_num_const_regexp      =   null;
  55.     var $_dvar_guts_regexp      =   null;
  56.     var $_dvar_regexp           =   null;
  57.     var $_cvar_regexp           =   null;
  58.     var $_svar_regexp           =   null;
  59.     var $_avar_regexp           =   null;
  60.     var $_mod_regexp            =   null;
  61.     var $_var_regexp            =   null;
  62.     var $_parenth_param_regexp  =   null;
  63.     var $_func_call_regexp      =   null;
  64.     var $_obj_ext_regexp        =   null;
  65.     var $_obj_start_regexp      =   null;
  66.     var $_obj_params_regexp     =   null;
  67.     var $_obj_call_regexp       =   null;
  68.     var $_cacheable_state       =   0;
  69.     var $_cache_attrs_count     =   0;
  70.     var $_nocache_count         =   0;
  71.     var $_cache_serial          =   null;
  72.     var $_cache_include         =   null;
  73.  
  74.     var $_strip_depth           =   0;
  75.     var $_additional_newline    =   "\n";
  76.  
  77.     /**#@-*/
  78.     /**
  79.      * The class constructor.
  80.      */
  81.     function Smarty_Compiler()
  82.     {
  83.         // matches double quoted strings:
  84.         // "foobar"
  85.         // "foo\"bar"
  86.         $this->_db_qstr_regexp = '"[^"\\\\]*(?:\\\\.[^"\\\\]*)*"';
  87.  
  88.         // matches single quoted strings:
  89.         // 'foobar'
  90.         // 'foo\'bar'
  91.         $this->_si_qstr_regexp = '\'[^\'\\\\]*(?:\\\\.[^\'\\\\]*)*\'';
  92.  
  93.         // matches single or double quoted strings
  94.         $this->_qstr_regexp = '(?:' . $this->_db_qstr_regexp . '|' . $this->_si_qstr_regexp . ')';
  95.  
  96.         // matches bracket portion of vars
  97.         // [0]
  98.         // [foo]
  99.         // [$bar]
  100.         $this->_var_bracket_regexp = '\[\$?[\w\.]+\]';
  101.  
  102.         // matches numerical constants
  103.         // 30
  104.         // -12
  105.         // 13.22
  106.         $this->_num_const_regexp = '(?:\-?\d+(?:\.\d+)?)';
  107.  
  108.         // matches $ vars (not objects):
  109.         // $foo
  110.         // $foo.bar
  111.         // $foo.bar.foobar
  112.         // $foo[0]
  113.         // $foo[$bar]
  114.         // $foo[5][blah]
  115.         // $foo[5].bar[$foobar][4]
  116.         $this->_dvar_math_regexp = '(?:[\+\*\/\%]|(?:-(?!>)))';
  117.         $this->_dvar_math_var_regexp = '[\$\w\.\+\-\*\/\%\d\>\[\]]';
  118.         $this->_dvar_guts_regexp = '\w+(?:' . $this->_var_bracket_regexp
  119.                 . ')*(?:\.\$?\w+(?:' . $this->_var_bracket_regexp . ')*)*(?:' . $this->_dvar_math_regexp . '(?:' . $this->_num_const_regexp . '|' . $this->_dvar_math_var_regexp . ')*)?';
  120.         $this->_dvar_regexp = '\$' . $this->_dvar_guts_regexp;
  121.  
  122.         // matches config vars:
  123.         // #foo#
  124.         // #foobar123_foo#
  125.         $this->_cvar_regexp = '\#\w+\#';
  126.  
  127.         // matches section vars:
  128.         // %foo.bar%
  129.         $this->_svar_regexp = '\%\w+\.\w+\%';
  130.  
  131.         // matches all valid variables (no quotes, no modifiers)
  132.         $this->_avar_regexp = '(?:' . $this->_dvar_regexp . '|'
  133.            . $this->_cvar_regexp . '|' . $this->_svar_regexp . ')';
  134.  
  135.         // matches valid variable syntax:
  136.         // $foo
  137.         // $foo
  138.         // #foo#
  139.         // #foo#
  140.         // "text"
  141.         // "text"
  142.         $this->_var_regexp = '(?:' . $this->_avar_regexp . '|' . $this->_qstr_regexp . ')';
  143.  
  144.         // matches valid object call (one level of object nesting allowed in parameters):
  145.         // $foo->bar
  146.         // $foo->bar()
  147.         // $foo->bar("text")
  148.         // $foo->bar($foo, $bar, "text")
  149.         // $foo->bar($foo, "foo")
  150.         // $foo->bar->foo()
  151.         // $foo->bar->foo->bar()
  152.         // $foo->bar($foo->bar)
  153.         // $foo->bar($foo->bar())
  154.         // $foo->bar($foo->bar($blah,$foo,44,"foo",$foo[0].bar))
  155.         $this->_obj_ext_regexp = '\->(?:\$?' . $this->_dvar_guts_regexp . ')';
  156.         $this->_obj_restricted_param_regexp = '(?:'
  157.                 . '(?:' . $this->_var_regexp . '|' . $this->_num_const_regexp . ')(?:' . $this->_obj_ext_regexp . '(?:\((?:(?:' . $this->_var_regexp . '|' . $this->_num_const_regexp . ')'
  158.                 . '(?:\s*,\s*(?:' . $this->_var_regexp . '|' . $this->_num_const_regexp . '))*)?\))?)*)';
  159.         $this->_obj_single_param_regexp = '(?:\w+|' . $this->_obj_restricted_param_regexp . '(?:\s*,\s*(?:(?:\w+|'
  160.                 . $this->_var_regexp . $this->_obj_restricted_param_regexp . ')))*)';
  161.         $this->_obj_params_regexp = '\((?:' . $this->_obj_single_param_regexp
  162.                 . '(?:\s*,\s*' . $this->_obj_single_param_regexp . ')*)?\)';
  163.         $this->_obj_start_regexp = '(?:' . $this->_dvar_regexp . '(?:' . $this->_obj_ext_regexp . ')+)';
  164.         $this->_obj_call_regexp = '(?:' . $this->_obj_start_regexp . '(?:' . $this->_obj_params_regexp . ')?(?:' . $this->_dvar_math_regexp . '(?:' . $this->_num_const_regexp . '|' . $this->_dvar_math_var_regexp . ')*)?)';
  165.         
  166.         // matches valid modifier syntax:
  167.         // |foo
  168.         // |@foo
  169.         // |foo:"bar"
  170.         // |foo:$bar
  171.         // |foo:"bar":$foobar
  172.         // |foo|bar
  173.         // |foo:$foo->bar
  174.         $this->_mod_regexp = '(?:\|@?\w+(?::(?:\w+|' . $this->_num_const_regexp . '|'
  175.            . $this->_obj_call_regexp . '|' . $this->_avar_regexp . '|' . $this->_qstr_regexp .'))*)';
  176.  
  177.         // matches valid function name:
  178.         // foo123
  179.         // _foo_bar
  180.         $this->_func_regexp = '[a-zA-Z_]\w*';
  181.  
  182.         // matches valid registered object:
  183.         // foo->bar
  184.         $this->_reg_obj_regexp = '[a-zA-Z_]\w*->[a-zA-Z_]\w*';
  185.  
  186.         // matches valid parameter values:
  187.         // true
  188.         // $foo
  189.         // $foo|bar
  190.         // #foo#
  191.         // #foo#|bar
  192.         // "text"
  193.         // "text"|bar
  194.         // $foo->bar
  195.         $this->_param_regexp = '(?:\s*(?:' . $this->_obj_call_regexp . '|'
  196.            . $this->_var_regexp . '|' . $this->_num_const_regexp  . '|\w+)(?>' . $this->_mod_regexp . '*)\s*)';
  197.  
  198.         // matches valid parenthesised function parameters:
  199.         //
  200.         // "text"
  201.         //    $foo, $bar, "text"
  202.         // $foo|bar, "foo"|bar, $foo->bar($foo)|bar
  203.         $this->_parenth_param_regexp = '(?:\((?:\w+|'
  204.                 . $this->_param_regexp . '(?:\s*,\s*(?:(?:\w+|'
  205.                 . $this->_param_regexp . ')))*)?\))';
  206.  
  207.         // matches valid function call:
  208.         // foo()
  209.         // foo_bar($foo)
  210.         // _foo_bar($foo,"bar")
  211.         // foo123($foo,$foo->bar(),"foo")
  212.         $this->_func_call_regexp = '(?:' . $this->_func_regexp . '\s*(?:'
  213.            . $this->_parenth_param_regexp . '))';
  214.     }
  215.  
  216.     /**
  217.      * compile a resource
  218.      *
  219.      * sets $compiled_content to the compiled source
  220.      * @param string $resource_name
  221.      * @param string $source_content
  222.      * @param string $compiled_content
  223.      * @return true
  224.      */
  225.     function _compile_file($resource_name, $source_content, &$compiled_content)
  226.     {
  227.  
  228.         if ($this->security) {
  229.             // do not allow php syntax to be executed unless specified
  230.             if ($this->php_handling == SMARTY_PHP_ALLOW &&
  231.                 !$this->security_settings['PHP_HANDLING']) {
  232.                 $this->php_handling = SMARTY_PHP_PASSTHRU;
  233.             }
  234.         }
  235.  
  236.         $this->_load_filters();
  237.  
  238.         $this->_current_file = $resource_name;
  239.         $this->_current_line_no = 1;
  240.         $ldq = preg_quote($this->left_delimiter, '~');
  241.         $rdq = preg_quote($this->right_delimiter, '~');
  242.  
  243.         // run template source through prefilter functions
  244.         if (count($this->_plugins['prefilter']) > 0) {
  245.             foreach ($this->_plugins['prefilter'] as $filter_name => $prefilter) {
  246.                 if ($prefilter === false) continue;
  247.                 if ($prefilter[3] || is_callable($prefilter[0])) {
  248.                     $source_content = call_user_func_array($prefilter[0],
  249.                                                             array($source_content, &$this));
  250.                     $this->_plugins['prefilter'][$filter_name][3] = true;
  251.                 } else {
  252.                     $this->_trigger_fatal_error("[plugin] prefilter '$filter_name' is not implemented");
  253.                 }
  254.             }
  255.         }
  256.  
  257.         /* fetch all special blocks */
  258.         $search = "~{$ldq}\*(.*?)\*{$rdq}|{$ldq}\s*literal\s*{$rdq}(.*?){$ldq}\s*/literal\s*{$rdq}|{$ldq}\s*php\s*{$rdq}(.*?){$ldq}\s*/php\s*{$rdq}~s";
  259.  
  260.         preg_match_all($search, $source_content, $match,  PREG_SET_ORDER);
  261.         $this->_folded_blocks = $match;
  262.         reset($this->_folded_blocks);
  263.  
  264.         /* replace special blocks by "{php}" */
  265.         $source_content = preg_replace($search.'e', "'"
  266.                                        . $this->_quote_replace($this->left_delimiter) . 'php'
  267.                                        . "' . str_repeat(\"\n\", substr_count('\\0', \"\n\")) .'"
  268.                                        . $this->_quote_replace($this->right_delimiter)
  269.                                        . "'"
  270.                                        , $source_content);
  271.  
  272.         /* Gather all template tags. */
  273.         preg_match_all("~{$ldq}\s*(.*?)\s*{$rdq}~s", $source_content, $_match);
  274.         $template_tags = $_match[1];
  275.         /* Split content by template tags to obtain non-template content. */
  276.         $text_blocks = preg_split("~{$ldq}.*?{$rdq}~s", $source_content);
  277.  
  278.         /* loop through text blocks */
  279.         for ($curr_tb = 0, $for_max = count($text_blocks); $curr_tb < $for_max; $curr_tb++) {
  280.             /* match anything resembling php tags */
  281.             if (preg_match_all('~(<\?(?:\w+|=)?|\?>|language\s*=\s*[\"\']?\s*php\s*[\"\']?)~is', $text_blocks[$curr_tb], $sp_match)) {
  282.                 /* replace tags with placeholders to prevent recursive replacements */
  283.                 $sp_match[1] = array_unique($sp_match[1]);
  284.                 usort($sp_match[1], '_smarty_sort_length');
  285.                 for ($curr_sp = 0, $for_max2 = count($sp_match[1]); $curr_sp < $for_max2; $curr_sp++) {
  286.                     $text_blocks[$curr_tb] = str_replace($sp_match[1][$curr_sp],'%%%SMARTYSP'.$curr_sp.'%%%',$text_blocks[$curr_tb]);
  287.                 }
  288.                 /* process each one */
  289.                 for ($curr_sp = 0, $for_max2 = count($sp_match[1]); $curr_sp < $for_max2; $curr_sp++) {
  290.                     if ($this->php_handling == SMARTY_PHP_PASSTHRU) {
  291.                         /* echo php contents */
  292.                         $text_blocks[$curr_tb] = str_replace('%%%SMARTYSP'.$curr_sp.'%%%', '<?php echo \''.str_replace("'", "\'", $sp_match[1][$curr_sp]).'\'; ?>'."\n", $text_blocks[$curr_tb]);
  293.                     } else if ($this->php_handling == SMARTY_PHP_QUOTE) {
  294.                         /* quote php tags */
  295.                         $text_blocks[$curr_tb] = str_replace('%%%SMARTYSP'.$curr_sp.'%%%', htmlspecialchars($sp_match[1][$curr_sp]), $text_blocks[$curr_tb]);
  296.                     } else if ($this->php_handling == SMARTY_PHP_REMOVE) {
  297.                         /* remove php tags */
  298.                         $text_blocks[$curr_tb] = str_replace('%%%SMARTYSP'.$curr_sp.'%%%', '', $text_blocks[$curr_tb]);
  299.                     } else {
  300.                         /* SMARTY_PHP_ALLOW, but echo non php starting tags */
  301.                         $sp_match[1][$curr_sp] = preg_replace('~(<\?(?!php|=|$))~i', '<?php echo \'\\1\'?>'."\n", $sp_match[1][$curr_sp]);
  302.                         $text_blocks[$curr_tb] = str_replace('%%%SMARTYSP'.$curr_sp.'%%%', $sp_match[1][$curr_sp], $text_blocks[$curr_tb]);
  303.                     }
  304.                 }
  305.             }
  306.         }
  307.         
  308.         /* Compile the template tags into PHP code. */
  309.         $compiled_tags = array();
  310.         for ($i = 0, $for_max = count($template_tags); $i < $for_max; $i++) {
  311.             $this->_current_line_no += substr_count($text_blocks[$i], "\n");
  312.             $compiled_tags[] = $this->_compile_tag($template_tags[$i]);
  313.             $this->_current_line_no += substr_count($template_tags[$i], "\n");
  314.         }
  315.         if (count($this->_tag_stack)>0) {
  316.             list($_open_tag, $_line_no) = end($this->_tag_stack);
  317.             $this->_syntax_error("unclosed tag \{$_open_tag} (opened line $_line_no).", E_USER_ERROR, __FILE__, __LINE__);
  318.             return;
  319.         }
  320.  
  321.         /* Reformat $text_blocks between 'strip' and '/strip' tags,
  322.            removing spaces, tabs and newlines. */
  323.         $strip = false;
  324.         for ($i = 0, $for_max = count($compiled_tags); $i < $for_max; $i++) {
  325.             if ($compiled_tags[$i] == '{strip}') {
  326.                 $compiled_tags[$i] = '';
  327.                 $strip = true;
  328.                 /* remove leading whitespaces */
  329.                 $text_blocks[$i + 1] = ltrim($text_blocks[$i + 1]);
  330.             }
  331.             if ($strip) {
  332.                 /* strip all $text_blocks before the next '/strip' */
  333.                 for ($j = $i + 1; $j < $for_max; $j++) {
  334.                     /* remove leading and trailing whitespaces of each line */
  335.                     $text_blocks[$j] = preg_replace('![\t ]*[\r\n]+[\t ]*!', '', $text_blocks[$j]);
  336.                     if ($compiled_tags[$j] == '{/strip}') {                       
  337.                         /* remove trailing whitespaces from the last text_block */
  338.                         $text_blocks[$j] = rtrim($text_blocks[$j]);
  339.                     }
  340.                     $text_blocks[$j] = "<?php echo '" . strtr($text_blocks[$j], array("'"=>"\'", "\\"=>"\\\\")) . "'; ?>";
  341.                     if ($compiled_tags[$j] == '{/strip}') {
  342.                         $compiled_tags[$j] = "\n"; /* slurped by php, but necessary
  343.                                     if a newline is following the closing strip-tag */
  344.                         $strip = false;
  345.                         $i = $j;
  346.                         break;
  347.                     }
  348.                 }
  349.             }
  350.         }
  351.         $compiled_content = '';
  352.         
  353.         $tag_guard = '%%%SMARTYOTG' . md5(uniqid(rand(), true)) . '%%%';
  354.         
  355.         /* Interleave the compiled contents and text blocks to get the final result. */
  356.         for ($i = 0, $for_max = count($compiled_tags); $i < $for_max; $i++) {
  357.             if ($compiled_tags[$i] == '') {
  358.                 // tag result empty, remove first newline from following text block
  359.                 $text_blocks[$i+1] = preg_replace('~^(\r\n|\r|\n)~', '', $text_blocks[$i+1]);
  360.             }
  361.             // replace legit PHP tags with placeholder
  362.             $text_blocks[$i] = str_replace('<?', $tag_guard, $text_blocks[$i]);
  363.             $compiled_tags[$i] = str_replace('<?', $tag_guard, $compiled_tags[$i]);
  364.             
  365.             $compiled_content .= $text_blocks[$i] . $compiled_tags[$i];
  366.         }
  367.         $compiled_content .= str_replace('<?', $tag_guard, $text_blocks[$i]);
  368.  
  369.         // escape php tags created by interleaving
  370.         $compiled_content = str_replace('<?', "<?php echo '<?' ?>\n", $compiled_content);
  371.         $compiled_content = preg_replace("~(?<!')language\s*=\s*[\"\']?\s*php\s*[\"\']?~", "<?php echo 'language=php' ?>\n", $compiled_content);
  372.  
  373.         // recover legit tags
  374.         $compiled_content = str_replace($tag_guard, '<?', $compiled_content); 
  375.         
  376.         // remove \n from the end of the file, if any
  377.         if (strlen($compiled_content) && (substr($compiled_content, -1) == "\n") ) {
  378.             $compiled_content = substr($compiled_content, 0, -1);
  379.         }
  380.  
  381.         if (!empty($this->_cache_serial)) {
  382.             $compiled_content = "<?php \$this->_cache_serials['".$this->_cache_include."'] = '".$this->_cache_serial."'; ?>" . $compiled_content;
  383.         }
  384.  
  385.         // run compiled template through postfilter functions
  386.         if (count($this->_plugins['postfilter']) > 0) {
  387.             foreach ($this->_plugins['postfilter'] as $filter_name => $postfilter) {
  388.                 if ($postfilter === false) continue;
  389.                 if ($postfilter[3] || is_callable($postfilter[0])) {
  390.                     $compiled_content = call_user_func_array($postfilter[0],
  391.                                                               array($compiled_content, &$this));
  392.                     $this->_plugins['postfilter'][$filter_name][3] = true;
  393.                 } else {
  394.                     $this->_trigger_fatal_error("Smarty plugin error: postfilter '$filter_name' is not implemented");
  395.                 }
  396.             }
  397.         }
  398.  
  399.         // put header at the top of the compiled template
  400.         $template_header = "<?php /* Smarty version ".$this->_version.", created on ".strftime("%Y-%m-%d %H:%M:%S")."\n";
  401.         $template_header .= "         compiled from ".strtr(urlencode($resource_name), array('%2F'=>'/', '%3A'=>':'))." */ ?>\n";
  402.  
  403.         /* Emit code to load needed plugins. */
  404.         $this->_plugins_code = '';
  405.         if (count($this->_plugin_info)) {
  406.             $_plugins_params = "array('plugins' => array(";
  407.             foreach ($this->_plugin_info as $plugin_type => $plugins) {
  408.                 foreach ($plugins as $plugin_name => $plugin_info) {
  409.                     $_plugins_params .= "array('$plugin_type', '$plugin_name', '" . strtr($plugin_info[0], array("'" => "\\'", "\\" => "\\\\")) . "', $plugin_info[1], ";
  410.                     $_plugins_params .= $plugin_info[2] ? 'true),' : 'false),';
  411.                 }
  412.             }
  413.             $_plugins_params .= '))';
  414.             $plugins_code = "<?php require_once(SMARTY_CORE_DIR . 'core.load_plugins.php');\nsmarty_core_load_plugins($_plugins_params, \$this); ?>\n";
  415.             $template_header .= $plugins_code;
  416.             $this->_plugin_info = array();
  417.             $this->_plugins_code = $plugins_code;
  418.         }
  419.  
  420.         if ($this->_init_smarty_vars) {
  421.             $template_header .= "<?php require_once(SMARTY_CORE_DIR . 'core.assign_smarty_interface.php');\nsmarty_core_assign_smarty_interface(null, \$this); ?>\n";
  422.             $this->_init_smarty_vars = false;
  423.         }
  424.  
  425.         $compiled_content = $template_header . $compiled_content;
  426.         return true;
  427.     }
  428.  
  429.     /**
  430.      * Compile a template tag
  431.      *
  432.      * @param string $template_tag
  433.      * @return string
  434.      */
  435.     function _compile_tag($template_tag)
  436.     {
  437.         /* Matched comment. */
  438.         if (substr($template_tag, 0, 1) == '*' && substr($template_tag, -1) == '*')
  439.             return '';
  440.         
  441.         /* Split tag into two three parts: command, command modifiers and the arguments. */
  442.         if(! preg_match('~^(?:(' . $this->_num_const_regexp . '|' . $this->_obj_call_regexp . '|' . $this->_var_regexp
  443.                 . '|\/?' . $this->_reg_obj_regexp . '|\/?' . $this->_func_regexp . ')(' . $this->_mod_regexp . '*))
  444.                       (?:\s+(.*))?$
  445.                     ~xs', $template_tag, $match)) {
  446.             $this->_syntax_error("unrecognized tag: $template_tag", E_USER_ERROR, __FILE__, __LINE__);
  447.         }
  448.         
  449.         $tag_command = $match[1];
  450.         $tag_modifier = isset($match[2]) ? $match[2] : null;
  451.         $tag_args = isset($match[3]) ? $match[3] : null;
  452.  
  453.         if (preg_match('~^' . $this->_num_const_regexp . '|' . $this->_obj_call_regexp . '|' . $this->_var_regexp . '$~', $tag_command)) {
  454.             /* tag name is a variable or object */
  455.             $_return = $this->_parse_var_props($tag_command . $tag_modifier);
  456.             return "<?php echo $_return; ?>" . $this->_additional_newline;
  457.         }
  458.  
  459.         /* If the tag name is a registered object, we process it. */
  460.         if (preg_match('~^\/?' . $this->_reg_obj_regexp . '$~', $tag_command)) {
  461.             return $this->_compile_registered_object_tag($tag_command, $this->_parse_attrs($tag_args), $tag_modifier);
  462.         }
  463.  
  464.         switch ($tag_command) {
  465.             case 'include':
  466.                 return $this->_compile_include_tag($tag_args);
  467.  
  468.             case 'include_php':
  469.                 return $this->_compile_include_php_tag($tag_args);
  470.  
  471.             case 'if':
  472.                 $this->_push_tag('if');
  473.                 return $this->_compile_if_tag($tag_args);
  474.  
  475.             case 'else':
  476.                 list($_open_tag) = end($this->_tag_stack);
  477.                 if ($_open_tag != 'if' && $_open_tag != 'elseif')
  478.                     $this->_syntax_error('unexpected {else}', E_USER_ERROR, __FILE__, __LINE__);
  479.                 else
  480.                     $this->_push_tag('else');
  481.                 return '<?php else: ?>';
  482.  
  483.             case 'elseif':
  484.                 list($_open_tag) = end($this->_tag_stack);
  485.                 if ($_open_tag != 'if' && $_open_tag != 'elseif')
  486.                     $this->_syntax_error('unexpected {elseif}', E_USER_ERROR, __FILE__, __LINE__);
  487.                 if ($_open_tag == 'if')
  488.                     $this->_push_tag('elseif');
  489.                 return $this->_compile_if_tag($tag_args, true);
  490.  
  491.             case '/if':
  492.                 $this->_pop_tag('if');
  493.                 return '<?php endif; ?>';
  494.  
  495.             case 'capture':
  496.                 return $this->_compile_capture_tag(true, $tag_args);
  497.  
  498.             case '/capture':
  499.                 return $this->_compile_capture_tag(false);
  500.  
  501.             case 'ldelim':
  502.                 return $this->left_delimiter;
  503.  
  504.             case 'rdelim':
  505.                 return $this->right_delimiter;
  506.  
  507.             case 'section':
  508.                 $this->_push_tag('section');
  509.                 return $this->_compile_section_start($tag_args);
  510.  
  511.             case 'sectionelse':
  512.                 $this->_push_tag('sectionelse');
  513.                 return "<?php endfor; else: ?>";
  514.                 break;
  515.  
  516.             case '/section':
  517.                 $_open_tag = $this->_pop_tag('section');
  518.                 if ($_open_tag == 'sectionelse')
  519.                     return "<?php endif; ?>";
  520.                 else
  521.                     return "<?php endfor; endif; ?>";
  522.  
  523.             case 'foreach':
  524.                 $this->_push_tag('foreach');
  525.                 return $this->_compile_foreach_start($tag_args);
  526.                 break;
  527.  
  528.             case 'foreachelse':
  529.                 $this->_push_tag('foreachelse');
  530.                 return "<?php endforeach; else: ?>";
  531.  
  532.             case '/foreach':
  533.                 $_open_tag = $this->_pop_tag('foreach');
  534.                 if ($_open_tag == 'foreachelse')
  535.                     return "<?php endif; unset(\$_from); ?>";
  536.                 else
  537.                     return "<?php endforeach; endif; unset(\$_from); ?>";
  538.                 break;
  539.  
  540.             case 'strip':
  541.             case '/strip':
  542.                 if (substr($tag_command, 0, 1)=='/') {
  543.                     $this->_pop_tag('strip');
  544.                     if (--$this->_strip_depth==0) { /* outermost closing {/strip} */
  545.                         $this->_additional_newline = "\n";
  546.                         return '{' . $tag_command . '}';
  547.                     }
  548.                 } else {
  549.                     $this->_push_tag('strip');
  550.                     if ($this->_strip_depth++==0) { /* outermost opening {strip} */
  551.                         $this->_additional_newline = "";
  552.                         return '{' . $tag_command . '}';
  553.                     }
  554.                 }
  555.                 return '';
  556.  
  557.             case 'php':
  558.                 /* handle folded tags replaced by {php} */
  559.                 list(, $block) = each($this->_folded_blocks);
  560.                 $this->_current_line_no += substr_count($block[0], "\n");
  561.                 /* the number of matched elements in the regexp in _compile_file()
  562.                    determins the type of folded tag that was found */
  563.                 switch (count($block)) {
  564.                     case 2: /* comment */
  565.                         return '';
  566.  
  567.                     case 3: /* literal */
  568.                         return "<?php echo '" . strtr($block[2], array("'"=>"\'", "\\"=>"\\\\")) . "'; ?>" . $this->_additional_newline;
  569.  
  570.                     case 4: /* php */
  571.                         if ($this->security && !$this->security_settings['PHP_TAGS']) {
  572.                             $this->_syntax_error("(secure mode) php tags not permitted", E_USER_WARNING, __FILE__, __LINE__);
  573.                             return;
  574.                         }
  575.                         return '<?php ' . $block[3] .' ?>';
  576.                 }
  577.                 break;
  578.  
  579.             case 'insert':
  580.                 return $this->_compile_insert_tag($tag_args);
  581.  
  582.             default:
  583.                 if ($this->_compile_compiler_tag($tag_command, $tag_args, $output)) {
  584.                     return $output;
  585.                 } else if ($this->_compile_block_tag($tag_command, $tag_args, $tag_modifier, $output)) {
  586.                     return $output;
  587.                 } else if ($this->_compile_custom_tag($tag_command, $tag_args, $tag_modifier, $output)) {
  588.                     return $output;                    
  589.                 } else {
  590.                     $this->_syntax_error("unrecognized tag '$tag_command'", E_USER_ERROR, __FILE__, __LINE__);
  591.                 }
  592.  
  593.         }
  594.     }
  595.  
  596.  
  597.     /**
  598.      * compile the custom compiler tag
  599.      *
  600.      * sets $output to the compiled custom compiler tag
  601.      * @param string $tag_command
  602.      * @param string $tag_args
  603.      * @param string $output
  604.      * @return boolean
  605.      */
  606.     function _compile_compiler_tag($tag_command, $tag_args, &$output)
  607.     {
  608.         $found = false;
  609.         $have_function = true;
  610.  
  611.         /*
  612.          * First we check if the compiler function has already been registered
  613.          * or loaded from a plugin file.
  614.          */
  615.         if (isset($this->_plugins['compiler'][$tag_command])) {
  616.             $found = true;
  617.             $plugin_func = $this->_plugins['compiler'][$tag_command][0];
  618.             if (!is_callable($plugin_func)) {
  619.                 $message = "compiler function '$tag_command' is not implemented";
  620.                 $have_function = false;
  621.             }
  622.         }
  623.         /*
  624.          * Otherwise we need to load plugin file and look for the function
  625.          * inside it.
  626.          */
  627.         else if ($plugin_file = $this->_get_plugin_filepath('compiler', $tag_command)) {
  628.             $found = true;
  629.  
  630.             include_once $plugin_file;
  631.  
  632.             $plugin_func = 'smarty_compiler_' . $tag_command;
  633.             if (!is_callable($plugin_func)) {
  634.                 $message = "plugin function $plugin_func() not found in $plugin_file\n";
  635.                 $have_function = false;
  636.             } else {
  637.                 $this->_plugins['compiler'][$tag_command] = array($plugin_func, null, null, null, true);
  638.             }
  639.         }
  640.  
  641.         /*
  642.          * True return value means that we either found a plugin or a
  643.          * dynamically registered function. False means that we didn't and the
  644.          * compiler should now emit code to load custom function plugin for this
  645.          * tag.
  646.          */
  647.         if ($found) {
  648.             if ($have_function) {
  649.                 $output = call_user_func_array($plugin_func, array($tag_args, &$this));
  650.                 if($output != '') {
  651.                 $output = '<?php ' . $this->_push_cacheable_state('compiler', $tag_command)
  652.                                    . $output
  653.                                    . $this->_pop_cacheable_state('compiler', $tag_command) . ' ?>';
  654.                 }
  655.             } else {
  656.                 $this->_syntax_error($message, E_USER_WARNING, __FILE__, __LINE__);
  657.             }
  658.             return true;
  659.         } else {
  660.             return false;
  661.         }
  662.     }
  663.  
  664.  
  665.     /**
  666.      * compile block function tag
  667.      *
  668.      * sets $output to compiled block function tag
  669.      * @param string $tag_command
  670.      * @param string $tag_args
  671.      * @param string $tag_modifier
  672.      * @param string $output
  673.      * @return boolean
  674.      */
  675.     function _compile_block_tag($tag_command, $tag_args, $tag_modifier, &$output)
  676.     {
  677.         if (substr($tag_command, 0, 1) == '/') {
  678.             $start_tag = false;
  679.             $tag_command = substr($tag_command, 1);
  680.         } else
  681.             $start_tag = true;
  682.  
  683.         $found = false;
  684.         $have_function = true;
  685.  
  686.         /*
  687.          * First we check if the block function has already been registered
  688.          * or loaded from a plugin file.
  689.          */
  690.         if (isset($this->_plugins['block'][$tag_command])) {
  691.             $found = true;
  692.             $plugin_func = $this->_plugins['block'][$tag_command][0];
  693.             if (!is_callable($plugin_func)) {
  694.                 $message = "block function '$tag_command' is not implemented";
  695.                 $have_function = false;
  696.             }
  697.         }
  698.         /*
  699.          * Otherwise we need to load plugin file and look for the function
  700.          * inside it.
  701.          */
  702.         else if ($plugin_file = $this->_get_plugin_filepath('block', $tag_command)) {
  703.             $found = true;
  704.  
  705.             include_once $plugin_file;
  706.  
  707.             $plugin_func = 'smarty_block_' . $tag_command;
  708.             if (!function_exists($plugin_func)) {
  709.                 $message = "plugin function $plugin_func() not found in $plugin_file\n";
  710.                 $have_function = false;
  711.             } else {
  712.                 $this->_plugins['block'][$tag_command] = array($plugin_func, null, null, null, true);
  713.  
  714.             }
  715.         }
  716.  
  717.         if (!$found) {
  718.             return false;
  719.         } else if (!$have_function) {
  720.             $this->_syntax_error($message, E_USER_WARNING, __FILE__, __LINE__);
  721.             return true;
  722.         }
  723.  
  724.         /*
  725.          * Even though we've located the plugin function, compilation
  726.          * happens only once, so the plugin will still need to be loaded
  727.          * at runtime for future requests.
  728.          */
  729.         $this->_add_plugin('block', $tag_command);
  730.  
  731.         if ($start_tag)
  732.             $this->_push_tag($tag_command);
  733.         else
  734.             $this->_pop_tag($tag_command);
  735.  
  736.         if ($start_tag) {
  737.             $output = '<?php ' . $this->_push_cacheable_state('block', $tag_command);
  738.             $attrs = $this->_parse_attrs($tag_args);
  739.             $_cache_attrs='';
  740.             $arg_list = $this->_compile_arg_list('block', $tag_command, $attrs, $_cache_attrs);
  741.             $output .= "$_cache_attrs\$this->_tag_stack[] = array('$tag_command', array(".implode(',', $arg_list).')); ';
  742.             $output .= '$_block_repeat=true;' . $this->_compile_plugin_call('block', $tag_command).'($this->_tag_stack[count($this->_tag_stack)-1][1], null, $this, $_block_repeat);';
  743.             $output .= 'while ($_block_repeat) { ob_start(); ?>';
  744.         } else {
  745.             $output = '<?php $_block_content = ob_get_contents(); ob_end_clean(); ';
  746.             $_out_tag_text = $this->_compile_plugin_call('block', $tag_command).'($this->_tag_stack[count($this->_tag_stack)-1][1], $_block_content, $this, $_block_repeat)';
  747.             if ($tag_modifier != '') {
  748.                 $this->_parse_modifiers($_out_tag_text, $tag_modifier);
  749.             }
  750.             $output .= '$_block_repeat=false;echo ' . $_out_tag_text . '; } ';
  751.             $output .= " array_pop(\$this->_tag_stack); " . $this->_pop_cacheable_state('block', $tag_command) . '?>';
  752.         }
  753.  
  754.         return true;
  755.     }
  756.  
  757.  
  758.     /**
  759.      * compile custom function tag
  760.      *
  761.      * @param string $tag_command
  762.      * @param string $tag_args
  763.      * @param string $tag_modifier
  764.      * @return string
  765.      */
  766.     function _compile_custom_tag($tag_command, $tag_args, $tag_modifier, &$output)
  767.     {
  768.         $found = false;
  769.         $have_function = true;
  770.  
  771.         /*
  772.          * First we check if the custom function has already been registered
  773.          * or loaded from a plugin file.
  774.          */
  775.         if (isset($this->_plugins['function'][$tag_command])) {
  776.             $found = true;
  777.             $plugin_func = $this->_plugins['function'][$tag_command][0];
  778.             if (!is_callable($plugin_func)) {
  779.                 $message = "custom function '$tag_command' is not implemented";
  780.                 $have_function = false;
  781.             }
  782.         }
  783.         /*
  784.          * Otherwise we need to load plugin file and look for the function
  785.          * inside it.
  786.          */
  787.         else if ($plugin_file = $this->_get_plugin_filepath('function', $tag_command)) {
  788.             $found = true;
  789.  
  790.             include_once $plugin_file;
  791.  
  792.             $plugin_func = 'smarty_function_' . $tag_command;
  793.             if (!function_exists($plugin_func)) {
  794.                 $message = "plugin function $plugin_func() not found in $plugin_file\n";
  795.                 $have_function = false;
  796.             } else {
  797.                 $this->_plugins['function'][$tag_command] = array($plugin_func, null, null, null, true);
  798.  
  799.             }
  800.         }
  801.  
  802.         if (!$found) {
  803.             return false;
  804.         } else if (!$have_function) {
  805.             $this->_syntax_error($message, E_USER_WARNING, __FILE__, __LINE__);
  806.             return true;
  807.         }
  808.  
  809.         /* declare plugin to be loaded on display of the template that
  810.            we compile right now */
  811.         $this->_add_plugin('function', $tag_command);
  812.  
  813.         $_cacheable_state = $this->_push_cacheable_state('function', $tag_command);
  814.         $attrs = $this->_parse_attrs($tag_args);
  815.         $_cache_attrs = '';
  816.         $arg_list = $this->_compile_arg_list('function', $tag_command, $attrs, $_cache_attrs);
  817.  
  818.         $output = $this->_compile_plugin_call('function', $tag_command).'(array('.implode(',', $arg_list)."), \$this)";
  819.         if($tag_modifier != '') {
  820.             $this->_parse_modifiers($output, $tag_modifier);
  821.         }
  822.  
  823.         if($output != '') {
  824.             $output =  '<?php ' . $_cacheable_state . $_cache_attrs . 'echo ' . $output . ';'
  825.                 . $this->_pop_cacheable_state('function', $tag_command) . "?>" . $this->_additional_newline;
  826.         }
  827.  
  828.         return true;
  829.     }
  830.  
  831.     /**
  832.      * compile a registered object tag
  833.      *
  834.      * @param string $tag_command
  835.      * @param array $attrs
  836.      * @param string $tag_modifier
  837.      * @return string
  838.      */
  839.     function _compile_registered_object_tag($tag_command, $attrs, $tag_modifier)
  840.     {
  841.         if (substr($tag_command, 0, 1) == '/') {
  842.             $start_tag = false;
  843.             $tag_command = substr($tag_command, 1);
  844.         } else {
  845.             $start_tag = true;
  846.         }
  847.  
  848.         list($object, $obj_comp) = explode('->', $tag_command);
  849.  
  850.         $arg_list = array();
  851.         if(count($attrs)) {
  852.             $_assign_var = false;
  853.             foreach ($attrs as $arg_name => $arg_value) {
  854.                 if($arg_name == 'assign') {
  855.                     $_assign_var = $arg_value;
  856.                     unset($attrs['assign']);
  857.                     continue;
  858.                 }
  859.                 if (is_bool($arg_value))
  860.                     $arg_value = $arg_value ? 'true' : 'false';
  861.                 $arg_list[] = "'$arg_name' => $arg_value";
  862.             }
  863.         }
  864.  
  865.         if($this->_reg_objects[$object][2]) {
  866.             // smarty object argument format
  867.             $args = "array(".implode(',', (array)$arg_list)."), \$this";
  868.         } else {
  869.             // traditional argument format
  870.             $args = implode(',', array_values($attrs));
  871.             if (empty($args)) {
  872.                 $args = '';
  873.             }
  874.         }
  875.  
  876.         $prefix = '';
  877.         $postfix = '';
  878.         $newline = '';
  879.         if(!is_object($this->_reg_objects[$object][0])) {
  880.             $this->_trigger_fatal_error("registered '$object' is not an object" , $this->_current_file, $this->_current_line_no, __FILE__, __LINE__);
  881.         } elseif(!empty($this->_reg_objects[$object][1]) && !in_array($obj_comp, $this->_reg_objects[$object][1])) {
  882.             $this->_trigger_fatal_error("'$obj_comp' is not a registered component of object '$object'", $this->_current_file, $this->_current_line_no, __FILE__, __LINE__);
  883.         } elseif(method_exists($this->_reg_objects[$object][0], $obj_comp)) {
  884.             // method
  885.             if(in_array($obj_comp, $this->_reg_objects[$object][3])) {
  886.                 // block method
  887.                 if ($start_tag) {
  888.                     $prefix = "\$this->_tag_stack[] = array('$obj_comp', $args); ";
  889.                     $prefix .= "\$_block_repeat=true; \$this->_reg_objects['$object'][0]->$obj_comp(\$this->_tag_stack[count(\$this->_tag_stack)-1][1], null, \$this, \$_block_repeat); ";
  890.                     $prefix .= "while (\$_block_repeat) { ob_start();";
  891.                     $return = null;
  892.                     $postfix = '';
  893.                 } else {
  894.                     $prefix = "\$_obj_block_content = ob_get_contents(); ob_end_clean(); \$_block_repeat=false;";
  895.                     $return = "\$this->_reg_objects['$object'][0]->$obj_comp(\$this->_tag_stack[count(\$this->_tag_stack)-1][1], \$_obj_block_content, \$this, \$_block_repeat)";
  896.                     $postfix = "} array_pop(\$this->_tag_stack);";
  897.                 }
  898.             } else {
  899.                 // non-block method
  900.                 $return = "\$this->_reg_objects['$object'][0]->$obj_comp($args)";
  901.             }
  902.         } else {
  903.             // property
  904.             $return = "\$this->_reg_objects['$object'][0]->$obj_comp";
  905.         }
  906.  
  907.         if($return != null) {
  908.             if($tag_modifier != '') {
  909.                 $this->_parse_modifiers($return, $tag_modifier);
  910.             }
  911.  
  912.             if(!empty($_assign_var)) {
  913.                 $output = "\$this->assign('" . $this->_dequote($_assign_var) ."',  $return);";
  914.             } else {
  915.                 $output = 'echo ' . $return . ';';
  916.                 $newline = $this->_additional_newline;
  917.             }
  918.         } else {
  919.             $output = '';
  920.         }
  921.  
  922.         return '<?php ' . $prefix . $output . $postfix . "?>" . $newline;
  923.     }
  924.  
  925.     /**
  926.      * Compile {insert ...} tag
  927.      *
  928.      * @param string $tag_args
  929.      * @return string
  930.      */
  931.     function _compile_insert_tag($tag_args)
  932.     {
  933.         $attrs = $this->_parse_attrs($tag_args);
  934.         $name = $this->_dequote($attrs['name']);
  935.  
  936.         if (empty($name)) {
  937.             return $this->_syntax_error("missing insert name", E_USER_ERROR, __FILE__, __LINE__);
  938.         }
  939.         
  940.         if (!preg_match('~^\w+$~', $name)) {
  941.             return $this->_syntax_error("'insert: 'name' must be an insert function name", E_USER_ERROR, __FILE__, __LINE__);
  942.         }
  943.  
  944.         if (!empty($attrs['script'])) {
  945.             $delayed_loading = true;
  946.         } else {
  947.             $delayed_loading = false;
  948.         }
  949.  
  950.         foreach ($attrs as $arg_name => $arg_value) {
  951.             if (is_bool($arg_value))
  952.                 $arg_value = $arg_value ? 'true' : 'false';
  953.             $arg_list[] = "'$arg_name' => $arg_value";
  954.         }
  955.  
  956.         $this->_add_plugin('insert', $name, $delayed_loading);
  957.  
  958.         $_params = "array('args' => array(".implode(', ', (array)$arg_list)."))";
  959.  
  960.         return "<?php require_once(SMARTY_CORE_DIR . 'core.run_insert_handler.php');\necho smarty_core_run_insert_handler($_params, \$this); ?>" . $this->_additional_newline;
  961.     }
  962.  
  963.     /**
  964.      * Compile {include ...} tag
  965.      *
  966.      * @param string $tag_args
  967.      * @return string
  968.      */
  969.     function _compile_include_tag($tag_args)
  970.     {
  971.         $attrs = $this->_parse_attrs($tag_args);
  972.         $arg_list = array();
  973.  
  974.         if (empty($attrs['file'])) {
  975.             $this->_syntax_error("missing 'file' attribute in include tag", E_USER_ERROR, __FILE__, __LINE__);
  976.         }
  977.  
  978.         foreach ($attrs as $arg_name => $arg_value) {
  979.             if ($arg_name == 'file') {
  980.                 $include_file = $arg_value;
  981.                 continue;
  982.             } else if ($arg_name == 'assign') {
  983.                 $assign_var = $arg_value;
  984.                 continue;
  985.             }
  986.             if (is_bool($arg_value))
  987.                 $arg_value = $arg_value ? 'true' : 'false';
  988.             $arg_list[] = "'$arg_name' => $arg_value";
  989.         }
  990.  
  991.         $output = '<?php ';
  992.  
  993.         if (isset($assign_var)) {
  994.             $output .= "ob_start();\n";
  995.         }
  996.  
  997.         $output .=
  998.             "\$_smarty_tpl_vars = \$this->_tpl_vars;\n";
  999.  
  1000.  
  1001.         $_params = "array('smarty_include_tpl_file' => " . $include_file . ", 'smarty_include_vars' => array(".implode(',', (array)$arg_list)."))";
  1002.         $output .= "\$this->_smarty_include($_params);\n" .
  1003.         "\$this->_tpl_vars = \$_smarty_tpl_vars;\n" .
  1004.         "unset(\$_smarty_tpl_vars);\n";
  1005.  
  1006.         if (isset($assign_var)) {
  1007.             $output .= "\$this->assign(" . $assign_var . ", ob_get_contents()); ob_end_clean();\n";
  1008.         }
  1009.  
  1010.         $output .= ' ?>';
  1011.  
  1012.         return $output;
  1013.  
  1014.     }
  1015.  
  1016.     /**
  1017.      * Compile {include ...} tag
  1018.      *
  1019.      * @param string $tag_args
  1020.      * @return string
  1021.      */
  1022.     function _compile_include_php_tag($tag_args)
  1023.     {
  1024.         $attrs = $this->_parse_attrs($tag_args);
  1025.  
  1026.         if (empty($attrs['file'])) {
  1027.             $this->_syntax_error("missing 'file' attribute in include_php tag", E_USER_ERROR, __FILE__, __LINE__);
  1028.         }
  1029.  
  1030.         $assign_var = (empty($attrs['assign'])) ? '' : $this->_dequote($attrs['assign']);
  1031.         $once_var = (empty($attrs['once']) || $attrs['once']=='false') ? 'false' : 'true';
  1032.  
  1033.         $arg_list = array();
  1034.         foreach($attrs as $arg_name => $arg_value) {
  1035.             if($arg_name != 'file' AND $arg_name != 'once' AND $arg_name != 'assign') {
  1036.                 if(is_bool($arg_value))
  1037.                     $arg_value = $arg_value ? 'true' : 'false';
  1038.                 $arg_list[] = "'$arg_name' => $arg_value";
  1039.             }
  1040.         }
  1041.  
  1042.         $_params = "array('smarty_file' => " . $attrs['file'] . ", 'smarty_assign' => '$assign_var', 'smarty_once' => $once_var, 'smarty_include_vars' => array(".implode(',', $arg_list)."))";
  1043.  
  1044.         return "<?php require_once(SMARTY_CORE_DIR . 'core.smarty_include_php.php');\nsmarty_core_smarty_include_php($_params, \$this); ?>" . $this->_additional_newline;
  1045.     }
  1046.  
  1047.  
  1048.     /**
  1049.      * Compile {section ...} tag
  1050.      *
  1051.      * @param string $tag_args
  1052.      * @return string
  1053.      */
  1054.     function _compile_section_start($tag_args)
  1055.     {
  1056.         $attrs = $this->_parse_attrs($tag_args);
  1057.         $arg_list = array();
  1058.  
  1059.         $output = '<?php ';
  1060.         $section_name = $attrs['name'];
  1061.         if (empty($section_name)) {
  1062.             $this->_syntax_error("missing section name", E_USER_ERROR, __FILE__, __LINE__);
  1063.         }
  1064.  
  1065.         $output .= "unset(\$this->_sections[$section_name]);\n";
  1066.         $section_props = "\$this->_sections[$section_name]";
  1067.  
  1068.         foreach ($attrs as $attr_name => $attr_value) {
  1069.             switch ($attr_name) {
  1070.                 case 'loop':
  1071.                     $output .= "{$section_props}['loop'] = is_array(\$_loop=$attr_value) ? count(\$_loop) : max(0, (int)\$_loop); unset(\$_loop);\n";
  1072.                     break;
  1073.  
  1074.                 case 'show':
  1075.                     if (is_bool($attr_value))
  1076.                         $show_attr_value = $attr_value ? 'true' : 'false';
  1077.                     else
  1078.                         $show_attr_value = "(bool)$attr_value";
  1079.                     $output .= "{$section_props}['show'] = $show_attr_value;\n";
  1080.                     break;
  1081.  
  1082.                 case 'name':
  1083.                     $output .= "{$section_props}['$attr_name'] = $attr_value;\n";
  1084.                     break;
  1085.  
  1086.                 case 'max':
  1087.                 case 'start':
  1088.                     $output .= "{$section_props}['$attr_name'] = (int)$attr_value;\n";
  1089.                     break;
  1090.  
  1091.                 case 'step':
  1092.                     $output .= "{$section_props}['$attr_name'] = ((int)$attr_value) == 0 ? 1 : (int)$attr_value;\n";
  1093.                     break;
  1094.  
  1095.                 default:
  1096.                     $this->_syntax_error("unknown section attribute - '$attr_name'", E_USER_ERROR, __FILE__, __LINE__);
  1097.                     break;
  1098.             }
  1099.         }
  1100.  
  1101.         if (!isset($attrs['show']))
  1102.             $output .= "{$section_props}['show'] = true;\n";
  1103.  
  1104.         if (!isset($attrs['loop']))
  1105.             $output .= "{$section_props}['loop'] = 1;\n";
  1106.  
  1107.         if (!isset($attrs['max']))
  1108.             $output .= "{$section_props}['max'] = {$section_props}['loop'];\n";
  1109.         else
  1110.             $output .= "if ({$section_props}['max'] < 0)\n" .
  1111.                        "    {$section_props}['max'] = {$section_props}['loop'];\n";
  1112.  
  1113.         if (!isset($attrs['step']))
  1114.             $output .= "{$section_props}['step'] = 1;\n";
  1115.  
  1116.         if (!isset($attrs['start']))
  1117.             $output .= "{$section_props}['start'] = {$section_props}['step'] > 0 ? 0 : {$section_props}['loop']-1;\n";
  1118.         else {
  1119.             $output .= "if ({$section_props}['start'] < 0)\n" .
  1120.                        "    {$section_props}['start'] = max({$section_props}['step'] > 0 ? 0 : -1, {$section_props}['loop'] + {$section_props}['start']);\n" .
  1121.                        "else\n" .
  1122.                        "    {$section_props}['start'] = min({$section_props}['start'], {$section_props}['step'] > 0 ? {$section_props}['loop'] : {$section_props}['loop']-1);\n";
  1123.         }
  1124.  
  1125.         $output .= "if ({$section_props}['show']) {\n";
  1126.         if (!isset($attrs['start']) && !isset($attrs['step']) && !isset($attrs['max'])) {
  1127.             $output .= "    {$section_props}['total'] = {$section_props}['loop'];\n";
  1128.         } else {
  1129.             $output .= "    {$section_props}['total'] = min(ceil(({$section_props}['step'] > 0 ? {$section_props}['loop'] - {$section_props}['start'] : {$section_props}['start']+1)/abs({$section_props}['step'])), {$section_props}['max']);\n";
  1130.         }
  1131.         $output .= "    if ({$section_props}['total'] == 0)\n" .
  1132.                    "        {$section_props}['show'] = false;\n" .
  1133.                    "} else\n" .
  1134.                    "    {$section_props}['total'] = 0;\n";
  1135.  
  1136.         $output .= "if ({$section_props}['show']):\n";
  1137.         $output .= "
  1138.             for ({$section_props}['index'] = {$section_props}['start'], {$section_props}['iteration'] = 1;
  1139.                  {$section_props}['iteration'] <= {$section_props}['total'];
  1140.                  {$section_props}['index'] += {$section_props}['step'], {$section_props}['iteration']++):\n";
  1141.         $output .= "{$section_props}['rownum'] = {$section_props}['iteration'];\n";
  1142.         $output .= "{$section_props}['index_prev'] = {$section_props}['index'] - {$section_props}['step'];\n";
  1143.         $output .= "{$section_props}['index_next'] = {$section_props}['index'] + {$section_props}['step'];\n";
  1144.         $output .= "{$section_props}['first']      = ({$section_props}['iteration'] == 1);\n";
  1145.         $output .= "{$section_props}['last']       = ({$section_props}['iteration'] == {$section_props}['total']);\n";
  1146.  
  1147.         $output .= "?>";
  1148.  
  1149.         return $output;
  1150.     }
  1151.  
  1152.  
  1153.     /**
  1154.      * Compile {foreach ...} tag.
  1155.      *
  1156.      * @param string $tag_args
  1157.      * @return string
  1158.      */
  1159.     function _compile_foreach_start($tag_args)
  1160.     {
  1161.         $attrs = $this->_parse_attrs($tag_args);
  1162.         $arg_list = array();
  1163.  
  1164.         if (empty($attrs['from'])) {
  1165.             return $this->_syntax_error("foreach: missing 'from' attribute", E_USER_ERROR, __FILE__, __LINE__);
  1166.         }
  1167.         $from = $attrs['from'];
  1168.  
  1169.         if (empty($attrs['item'])) {
  1170.             return $this->_syntax_error("foreach: missing 'item' attribute", E_USER_ERROR, __FILE__, __LINE__);
  1171.         }
  1172.         $item = $this->_dequote($attrs['item']);
  1173.         if (!preg_match('~^\w+$~', $item)) {
  1174.             return $this->_syntax_error("foreach: 'item' must be a variable name (literal string)", E_USER_ERROR, __FILE__, __LINE__);
  1175.         }
  1176.  
  1177.         if (isset($attrs['key'])) {
  1178.             $key  = $this->_dequote($attrs['key']);
  1179.             if (!preg_match('~^\w+$~', $key)) {
  1180.                 return $this->_syntax_error("foreach: 'key' must to be a variable name (literal string)", E_USER_ERROR, __FILE__, __LINE__);
  1181.             }
  1182.             $key_part = "\$this->_tpl_vars['$key'] => ";
  1183.         } else {
  1184.             $key = null;
  1185.             $key_part = '';
  1186.         }
  1187.  
  1188.         if (isset($attrs['name'])) {
  1189.             $name = $attrs['name'];
  1190.         } else {
  1191.             $name = null;
  1192.         }
  1193.  
  1194.         $output = '<?php ';
  1195.         $output .= "\$_from = $from; if (!is_array(\$_from) && !is_object(\$_from)) { settype(\$_from, 'array'); }";
  1196.         if (isset($name)) {
  1197.             $foreach_props = "\$this->_foreach[$name]";
  1198.             $output .= "{$foreach_props} = array('total' => count(\$_from), 'iteration' => 0);\n";
  1199.             $output .= "if ({$foreach_props}['total'] > 0):\n";
  1200.             $output .= "    foreach (\$_from as $key_part\$this->_tpl_vars['$item']):\n";
  1201.             $output .= "        {$foreach_props}['iteration']++;\n";
  1202.         } else {
  1203.             $output .= "if (count(\$_from)):\n";
  1204.             $output .= "    foreach (\$_from as $key_part\$this->_tpl_vars['$item']):\n";
  1205.         }
  1206.         $output .= '?>';
  1207.  
  1208.         return $output;
  1209.     }
  1210.  
  1211.  
  1212.     /**
  1213.      * Compile {capture} .. {/capture} tags
  1214.      *
  1215.      * @param boolean $start true if this is the {capture} tag
  1216.      * @param string $tag_args
  1217.      * @return string
  1218.      */
  1219.  
  1220.     function _compile_capture_tag($start, $tag_args = '')
  1221.     {
  1222.         $attrs = $this->_parse_attrs($tag_args);
  1223.  
  1224.         if ($start) {
  1225.             $buffer = isset($attrs['name']) ? $attrs['name'] : "'default'";
  1226.             $assign = isset($attrs['assign']) ? $attrs['assign'] : null;
  1227.             $append = isset($attrs['append']) ? $attrs['append'] : null;
  1228.             
  1229.             $output = "<?php ob_start(); ?>";
  1230.             $this->_capture_stack[] = array($buffer, $assign, $append);
  1231.         } else {
  1232.             list($buffer, $assign, $append) = array_pop($this->_capture_stack);
  1233.             $output = "<?php \$this->_smarty_vars['capture'][$buffer] = ob_get_contents(); ";
  1234.             if (isset($assign)) {
  1235.                 $output .= " \$this->assign($assign, ob_get_contents());";
  1236.             }
  1237.             if (isset($append)) {
  1238.                 $output .= " \$this->append($append, ob_get_contents());";
  1239.             }
  1240.             $output .= "ob_end_clean(); ?>";
  1241.         }
  1242.  
  1243.         return $output;
  1244.     }
  1245.  
  1246.     /**
  1247.      * Compile {if ...} tag
  1248.      *
  1249.      * @param string $tag_args
  1250.      * @param boolean $elseif if true, uses elseif instead of if
  1251.      * @return string
  1252.      */
  1253.     function _compile_if_tag($tag_args, $elseif = false)
  1254.     {
  1255.  
  1256.         /* Tokenize args for 'if' tag. */
  1257.         preg_match_all('~(?>
  1258.                 ' . $this->_obj_call_regexp . '(?:' . $this->_mod_regexp . '*)? | # valid object call
  1259.                 ' . $this->_var_regexp . '(?:' . $this->_mod_regexp . '*)?    | # var or quoted string
  1260.                 \-?0[xX][0-9a-fA-F]+|\-?\d+(?:\.\d+)?|\.\d+|!==|===|==|!=|<>|<<|>>|<=|>=|\&\&|\|\||\(|\)|,|\!|\^|=|\&|\~|<|>|\||\%|\+|\-|\/|\*|\@    | # valid non-word token
  1261.                 \b\w+\b                                                        | # valid word token
  1262.                 \S+                                                           # anything else
  1263.                 )~x', $tag_args, $match);
  1264.  
  1265.         $tokens = $match[0];
  1266.  
  1267.         if(empty($tokens)) {
  1268.             $_error_msg = $elseif ? "'elseif'" : "'if'";
  1269.             $_error_msg .= ' statement requires arguments'; 
  1270.             $this->_syntax_error($_error_msg, E_USER_ERROR, __FILE__, __LINE__);
  1271.         }
  1272.             
  1273.                 
  1274.         // make sure we have balanced parenthesis
  1275.         $token_count = array_count_values($tokens);
  1276.         if(isset($token_count['(']) && $token_count['('] != $token_count[')']) {
  1277.             $this->_syntax_error("unbalanced parenthesis in if statement", E_USER_ERROR, __FILE__, __LINE__);
  1278.         }
  1279.  
  1280.         $is_arg_stack = array();
  1281.  
  1282.         for ($i = 0; $i < count($tokens); $i++) {
  1283.  
  1284.             $token = &$tokens[$i];
  1285.  
  1286.             switch (strtolower($token)) {
  1287.                 case '!':
  1288.                 case '%':
  1289.                 case '!==':
  1290.                 case '==':
  1291.                 case '===':
  1292.                 case '>':
  1293.                 case '<':
  1294.                 case '!=':
  1295.                 case '<>':
  1296.                 case '<<':
  1297.                 case '>>':
  1298.                 case '<=':
  1299.                 case '>=':
  1300.                 case '&&':
  1301.                 case '||':
  1302.                 case '|':
  1303.                 case '^':
  1304.                 case '&':
  1305.                 case '~':
  1306.                 case ')':
  1307.                 case ',':
  1308.                 case '+':
  1309.                 case '-':
  1310.                 case '*':
  1311.                 case '/':
  1312.                 case '@':
  1313.                     break;
  1314.  
  1315.                 case 'eq':
  1316.                     $token = '==';
  1317.                     break;
  1318.  
  1319.                 case 'ne':
  1320.                 case 'neq':
  1321.                     $token = '!=';
  1322.                     break;
  1323.  
  1324.                 case 'lt':
  1325.                     $token = '<';
  1326.                     break;
  1327.  
  1328.                 case 'le':
  1329.                 case 'lte':
  1330.                     $token = '<=';
  1331.                     break;
  1332.  
  1333.                 case 'gt':
  1334.                     $token = '>';
  1335.                     break;
  1336.  
  1337.                 case 'ge':
  1338.                 case 'gte':
  1339.                     $token = '>=';
  1340.                     break;
  1341.  
  1342.                 case 'and':
  1343.                     $token = '&&';
  1344.                     break;
  1345.  
  1346.                 case 'or':
  1347.                     $token = '||';
  1348.                     break;
  1349.  
  1350.                 case 'not':
  1351.                     $token = '!';
  1352.                     break;
  1353.  
  1354.                 case 'mod':
  1355.                     $token = '%';
  1356.                     break;
  1357.  
  1358.                 case '(':
  1359.                     array_push($is_arg_stack, $i);
  1360.                     break;
  1361.  
  1362.                 case 'is':
  1363.                     /* If last token was a ')', we operate on the parenthesized
  1364.                        expression. The start of the expression is on the stack.
  1365.                        Otherwise, we operate on the last encountered token. */
  1366.                     if ($tokens[$i-1] == ')')
  1367.                         $is_arg_start = array_pop($is_arg_stack);
  1368.                     else
  1369.                         $is_arg_start = $i-1;
  1370.                     /* Construct the argument for 'is' expression, so it knows
  1371.                        what to operate on. */
  1372.                     $is_arg = implode(' ', array_slice($tokens, $is_arg_start, $i - $is_arg_start));
  1373.  
  1374.                     /* Pass all tokens from next one until the end to the
  1375.                        'is' expression parsing function. The function will
  1376.                        return modified tokens, where the first one is the result
  1377.                        of the 'is' expression and the rest are the tokens it
  1378.                        didn't touch. */
  1379.                     $new_tokens = $this->_parse_is_expr($is_arg, array_slice($tokens, $i+1));
  1380.  
  1381.                     /* Replace the old tokens with the new ones. */
  1382.                     array_splice($tokens, $is_arg_start, count($tokens), $new_tokens);
  1383.  
  1384.                     /* Adjust argument start so that it won't change from the
  1385.                        current position for the next iteration. */
  1386.                     $i = $is_arg_start;
  1387.                     break;
  1388.  
  1389.                 default:
  1390.                     if(preg_match('~^' . $this->_func_regexp . '$~', $token) ) {
  1391.                             // function call
  1392.                             if($this->security &&
  1393.                                !in_array($token, $this->security_settings['IF_FUNCS'])) {
  1394.                                 $this->_syntax_error("(secure mode) '$token' not allowed in if statement", E_USER_ERROR, __FILE__, __LINE__);
  1395.                             }
  1396.                     } elseif(preg_match('~^' . $this->_var_regexp . '$~', $token) && (strpos('+-*/^%&|', substr($token, -1)) === false) && isset($tokens[$i+1]) && $tokens[$i+1] == '(') {
  1397.                         // variable function call
  1398.                         $this->_syntax_error("variable function call '$token' not allowed in if statement", E_USER_ERROR, __FILE__, __LINE__);                      
  1399.                     } elseif(preg_match('~^' . $this->_obj_call_regexp . '|' . $this->_var_regexp . '(?:' . $this->_mod_regexp . '*)$~', $token)) {
  1400.                         // object or variable
  1401.                         $token = $this->_parse_var_props($token);
  1402.                     } elseif(is_numeric($token)) {
  1403.                         // number, skip it
  1404.                     } else {
  1405.                         $this->_syntax_error("unidentified token '$token'", E_USER_ERROR, __FILE__, __LINE__);
  1406.                     }
  1407.                     break;
  1408.             }
  1409.         }
  1410.  
  1411.         if ($elseif)
  1412.             return '<?php elseif ('.implode(' ', $tokens).'): ?>';
  1413.         else
  1414.             return '<?php if ('.implode(' ', $tokens).'): ?>';
  1415.     }
  1416.  
  1417.  
  1418.     function _compile_arg_list($type, $name, $attrs, &$cache_code) {
  1419.         $arg_list = array();
  1420.  
  1421.         if (isset($type) && isset($name)
  1422.             && isset($this->_plugins[$type])
  1423.             && isset($this->_plugins[$type][$name])
  1424.             && empty($this->_plugins[$type][$name][4])
  1425.             && is_array($this->_plugins[$type][$name][5])
  1426.             ) {
  1427.             /* we have a list of parameters that should be cached */
  1428.             $_cache_attrs = $this->_plugins[$type][$name][5];
  1429.             $_count = $this->_cache_attrs_count++;
  1430.             $cache_code = "\$_cache_attrs =& \$this->_smarty_cache_attrs('$this->_cache_serial','$_count');";
  1431.  
  1432.         } else {
  1433.             /* no parameters are cached */
  1434.             $_cache_attrs = null;
  1435.         }
  1436.  
  1437.         foreach ($attrs as $arg_name => $arg_value) {
  1438.             if (is_bool($arg_value))
  1439.                 $arg_value = $arg_value ? 'true' : 'false';
  1440.             if (is_null($arg_value))
  1441.                 $arg_value = 'null';
  1442.             if ($_cache_attrs && in_array($arg_name, $_cache_attrs)) {
  1443.                 $arg_list[] = "'$arg_name' => (\$this->_cache_including) ? \$_cache_attrs['$arg_name'] : (\$_cache_attrs['$arg_name']=$arg_value)";
  1444.             } else {
  1445.                 $arg_list[] = "'$arg_name' => $arg_value";
  1446.             }
  1447.         }
  1448.         return $arg_list;
  1449.     }
  1450.  
  1451.     /**
  1452.      * Parse is expression
  1453.      *
  1454.      * @param string $is_arg
  1455.      * @param array $tokens
  1456.      * @return array
  1457.      */
  1458.     function _parse_is_expr($is_arg, $tokens)
  1459.     {
  1460.         $expr_end = 0;
  1461.         $negate_expr = false;
  1462.  
  1463.         if (($first_token = array_shift($tokens)) == 'not') {
  1464.             $negate_expr = true;
  1465.             $expr_type = array_shift($tokens);
  1466.         } else
  1467.             $expr_type = $first_token;
  1468.  
  1469.         switch ($expr_type) {
  1470.             case 'even':
  1471.                 if (isset($tokens[$expr_end]) && $tokens[$expr_end] == 'by') {
  1472.                     $expr_end++;
  1473.                     $expr_arg = $tokens[$expr_end++];
  1474.                     $expr = "!(1 & ($is_arg / " . $this->_parse_var_props($expr_arg) . "))";
  1475.                 } else
  1476.                     $expr = "!(1 & $is_arg)";
  1477.                 break;
  1478.  
  1479.             case 'odd':
  1480.                 if (isset($tokens[$expr_end]) && $tokens[$expr_end] == 'by') {
  1481.                     $expr_end++;
  1482.                     $expr_arg = $tokens[$expr_end++];
  1483.                     $expr = "(1 & ($is_arg / " . $this->_parse_var_props($expr_arg) . "))";
  1484.                 } else
  1485.                     $expr = "(1 & $is_arg)";
  1486.                 break;
  1487.  
  1488.             case 'div':
  1489.                 if (@$tokens[$expr_end] == 'by') {
  1490.                     $expr_end++;
  1491.                     $expr_arg = $tokens[$expr_end++];
  1492.                     $expr = "!($is_arg % " . $this->_parse_var_props($expr_arg) . ")";
  1493.                 } else {
  1494.                     $this->_syntax_error("expecting 'by' after 'div'", E_USER_ERROR, __FILE__, __LINE__);
  1495.                 }
  1496.                 break;
  1497.  
  1498.             default:
  1499.                 $this->_syntax_error("unknown 'is' expression - '$expr_type'", E_USER_ERROR, __FILE__, __LINE__);
  1500.                 break;
  1501.         }
  1502.  
  1503.         if ($negate_expr) {
  1504.             $expr = "!($expr)";
  1505.         }
  1506.  
  1507.         array_splice($tokens, 0, $expr_end, $expr);
  1508.  
  1509.         return $tokens;
  1510.     }
  1511.  
  1512.  
  1513.     /**
  1514.      * Parse attribute string
  1515.      *
  1516.      * @param string $tag_args
  1517.      * @return array
  1518.      */
  1519.     function _parse_attrs($tag_args)
  1520.     {
  1521.  
  1522.         /* Tokenize tag attributes. */
  1523.         preg_match_all('~(?:' . $this->_obj_call_regexp . '|' . $this->_qstr_regexp . ' | (?>[^"\'=\s]+)
  1524.                          )+ |
  1525.                          [=]
  1526.                         ~x', $tag_args, $match);
  1527.         $tokens       = $match[0];
  1528.  
  1529.         $attrs = array();
  1530.         /* Parse state:
  1531.             0 - expecting attribute name
  1532.             1 - expecting '='
  1533.             2 - expecting attribute value (not '=') */
  1534.         $state = 0;
  1535.  
  1536.         foreach ($tokens as $token) {
  1537.             switch ($state) {
  1538.                 case 0:
  1539.                     /* If the token is a valid identifier, we set attribute name
  1540.                        and go to state 1. */
  1541.                     if (preg_match('~^\w+$~', $token)) {
  1542.                         $attr_name = $token;
  1543.                         $state = 1;
  1544.                     } else
  1545.                         $this->_syntax_error("invalid attribute name: '$token'", E_USER_ERROR, __FILE__, __LINE__);
  1546.                     break;
  1547.  
  1548.                 case 1:
  1549.                     /* If the token is '=', then we go to state 2. */
  1550.                     if ($token == '=') {
  1551.                         $state = 2;
  1552.                     } else
  1553.                         $this->_syntax_error("expecting '=' after attribute name '$last_token'", E_USER_ERROR, __FILE__, __LINE__);
  1554.                     break;
  1555.  
  1556.                 case 2:
  1557.                     /* If token is not '=', we set the attribute value and go to
  1558.                        state 0. */
  1559.                     if ($token != '=') {
  1560.                         /* We booleanize the token if it's a non-quoted possible
  1561.                            boolean value. */
  1562.                         if (preg_match('~^(on|yes|true)$~', $token)) {
  1563.                             $token = 'true';
  1564.                         } else if (preg_match('~^(off|no|false)$~', $token)) {
  1565.                             $token = 'false';
  1566.                         } else if ($token == 'null') {
  1567.                             $token = 'null';
  1568.                         } else if (preg_match('~^' . $this->_num_const_regexp . '|0[xX][0-9a-fA-F]+$~', $token)) {
  1569.                             /* treat integer literally */
  1570.                         } else if (!preg_match('~^' . $this->_obj_call_regexp . '|' . $this->_var_regexp . '(?:' . $this->_mod_regexp . ')*$~', $token)) {
  1571.                             /* treat as a string, double-quote it escaping quotes */
  1572.                             $token = '"'.addslashes($token).'"';
  1573.                         }
  1574.  
  1575.                         $attrs[$attr_name] = $token;
  1576.                         $state = 0;
  1577.                     } else
  1578.                         $this->_syntax_error("'=' cannot be an attribute value", E_USER_ERROR, __FILE__, __LINE__);
  1579.                     break;
  1580.             }
  1581.             $last_token = $token;
  1582.         }
  1583.  
  1584.         if($state != 0) {
  1585.             if($state == 1) {
  1586.                 $this->_syntax_error("expecting '=' after attribute name '$last_token'", E_USER_ERROR, __FILE__, __LINE__);
  1587.             } else {
  1588.                 $this->_syntax_error("missing attribute value", E_USER_ERROR, __FILE__, __LINE__);
  1589.             }
  1590.         }
  1591.  
  1592.         $this->_parse_vars_props($attrs);
  1593.  
  1594.         return $attrs;
  1595.     }
  1596.  
  1597.     /**
  1598.      * compile multiple variables and section properties tokens into
  1599.      * PHP code
  1600.      *
  1601.      * @param array $tokens
  1602.      */
  1603.     function _parse_vars_props(&$tokens)
  1604.     {
  1605.         foreach($tokens as $key => $val) {
  1606.             $tokens[$key] = $this->_parse_var_props($val);
  1607.         }
  1608.     }
  1609.  
  1610.     /**
  1611.      * compile single variable and section properties token into
  1612.      * PHP code
  1613.      *
  1614.      * @param string $val
  1615.      * @param string $tag_attrs
  1616.      * @return string
  1617.      */
  1618.     function _parse_var_props($val)
  1619.     {
  1620.         $val = trim($val);
  1621.  
  1622.         if(preg_match('~^(' . $this->_obj_call_regexp . '|' . $this->_dvar_regexp . ')(' . $this->_mod_regexp . '*)$~', $val, $match)) {
  1623.             // $ variable or object
  1624.             $return = $this->_parse_var($match[1]);
  1625.             $modifiers = $match[2];
  1626.             if (!empty($this->default_modifiers) && !preg_match('~(^|\|)smarty:nodefaults($|\|)~',$modifiers)) {
  1627.                 $_default_mod_string = implode('|',(array)$this->default_modifiers);
  1628.                 $modifiers = empty($modifiers) ? $_default_mod_string : $_default_mod_string . '|' . $modifiers;
  1629.             }
  1630.             $this->_parse_modifiers($return, $modifiers);
  1631.             return $return;
  1632.         } elseif (preg_match('~^' . $this->_db_qstr_regexp . '(?:' . $this->_mod_regexp . '*)$~', $val)) {
  1633.                 // double quoted text
  1634.                 preg_match('~^(' . $this->_db_qstr_regexp . ')('. $this->_mod_regexp . '*)$~', $val, $match);
  1635.                 $return = $this->_expand_quoted_text($match[1]);
  1636.                 if($match[2] != '') {
  1637.                     $this->_parse_modifiers($return, $match[2]);
  1638.                 }
  1639.                 return $return;
  1640.             }
  1641.         elseif(preg_match('~^' . $this->_num_const_regexp . '(?:' . $this->_mod_regexp . '*)$~', $val)) {
  1642.                 // numerical constant
  1643.                 preg_match('~^(' . $this->_num_const_regexp . ')('. $this->_mod_regexp . '*)$~', $val, $match);
  1644.                 if($match[2] != '') {
  1645.                     $this->_parse_modifiers($match[1], $match[2]);
  1646.                     return $match[1];
  1647.                 }
  1648.             }
  1649.         elseif(preg_match('~^' . $this->_si_qstr_regexp . '(?:' . $this->_mod_regexp . '*)$~', $val)) {
  1650.                 // single quoted text
  1651.                 preg_match('~^(' . $this->_si_qstr_regexp . ')('. $this->_mod_regexp . '*)$~', $val, $match);
  1652.                 if($match[2] != '') {
  1653.                     $this->_parse_modifiers($match[1], $match[2]);
  1654.                     return $match[1];
  1655.                 }
  1656.             }
  1657.         elseif(preg_match('~^' . $this->_cvar_regexp . '(?:' . $this->_mod_regexp . '*)$~', $val)) {
  1658.                 // config var
  1659.                 return $this->_parse_conf_var($val);
  1660.             }
  1661.         elseif(preg_match('~^' . $this->_svar_regexp . '(?:' . $this->_mod_regexp . '*)$~', $val)) {
  1662.                 // section var
  1663.                 return $this->_parse_section_prop($val);
  1664.             }
  1665.         elseif(!in_array($val, $this->_permitted_tokens) && !is_numeric($val)) {
  1666.             // literal string
  1667.             return $this->_expand_quoted_text('"' . strtr($val, array('\\' => '\\\\', '"' => '\\"')) .'"');
  1668.         }
  1669.         return $val;
  1670.     }
  1671.  
  1672.     /**
  1673.      * expand quoted text with embedded variables
  1674.      *
  1675.      * @param string $var_expr
  1676.      * @return string
  1677.      */
  1678.     function _expand_quoted_text($var_expr)
  1679.     {
  1680.         // if contains unescaped $, expand it
  1681.         if(preg_match_all('~(?:\`(?<!\\\\)\$' . $this->_dvar_guts_regexp . '(?:' . $this->_obj_ext_regexp . ')*\`)|(?:(?<!\\\\)\$\w+(\[[a-zA-Z0-9]+\])*)~', $var_expr, $_match)) {
  1682.             $_match = $_match[0];
  1683.             $_replace = array();
  1684.             foreach($_match as $_var) {
  1685.                 $_replace[$_var] = '".(' . $this->_parse_var(str_replace('`','',$_var)) . ')."';
  1686.             }
  1687.             $var_expr = strtr($var_expr, $_replace);
  1688.             $_return = preg_replace('~\.""|(?<!\\\\)""\.~', '', $var_expr);
  1689.         } else {
  1690.             $_return = $var_expr;
  1691.         }
  1692.         // replace double quoted literal string with single quotes
  1693.         $_return = preg_replace('~^"([\s\w]+)"$~',"'\\1'",$_return);
  1694.         return $_return;
  1695.     }
  1696.  
  1697.     /**
  1698.      * parse variable expression into PHP code
  1699.      *
  1700.      * @param string $var_expr
  1701.      * @param string $output
  1702.      * @return string
  1703.      */
  1704.     function _parse_var($var_expr)
  1705.     {
  1706.         $_has_math = false;
  1707.         $_math_vars = preg_split('~('.$this->_dvar_math_regexp.'|'.$this->_qstr_regexp.')~', $var_expr, -1, PREG_SPLIT_DELIM_CAPTURE);
  1708.  
  1709.         if(count($_math_vars) > 1) {
  1710.             $_first_var = "";
  1711.             $_complete_var = "";
  1712.             $_output = "";
  1713.             // simple check if there is any math, to stop recursion (due to modifiers with "xx % yy" as parameter)
  1714.             foreach($_math_vars as $_k => $_math_var) {
  1715.                 $_math_var = $_math_vars[$_k];
  1716.  
  1717.                 if(!empty($_math_var) || is_numeric($_math_var)) {
  1718.                     // hit a math operator, so process the stuff which came before it
  1719.                     if(preg_match('~^' . $this->_dvar_math_regexp . '$~', $_math_var)) {
  1720.                         $_has_math = true;
  1721.                         if(!empty($_complete_var) || is_numeric($_complete_var)) {
  1722.                             $_output .= $this->_parse_var($_complete_var);
  1723.                         }
  1724.  
  1725.                         // just output the math operator to php
  1726.                         $_output .= $_math_var;
  1727.  
  1728.                         if(empty($_first_var))
  1729.                             $_first_var = $_complete_var;
  1730.  
  1731.                         $_complete_var = "";
  1732.                     } else {
  1733.                         $_complete_var .= $_math_var;
  1734.                     }
  1735.                 }
  1736.             }
  1737.             if($_has_math) {
  1738.                 if(!empty($_complete_var) || is_numeric($_complete_var))
  1739.                     $_output .= $this->_parse_var($_complete_var);
  1740.  
  1741.                 // get the modifiers working (only the last var from math + modifier is left)
  1742.                 $var_expr = $_complete_var;
  1743.             }
  1744.         }
  1745.  
  1746.         // prevent cutting of first digit in the number (we _definitly_ got a number if the first char is a digit)
  1747.         if(is_numeric(substr($var_expr, 0, 1)))
  1748.             $_var_ref = $var_expr;
  1749.         else
  1750.             $_var_ref = substr($var_expr, 1);
  1751.         
  1752.         if(!$_has_math) {
  1753.             
  1754.             // get [foo] and .foo and ->foo and (...) pieces
  1755.             preg_match_all('~(?:^\w+)|' . $this->_obj_params_regexp . '|(?:' . $this->_var_bracket_regexp . ')|->\$?\w+|\.\$?\w+|\S+~', $_var_ref, $match);
  1756.                         
  1757.             $_indexes = $match[0];
  1758.             $_var_name = array_shift($_indexes);
  1759.  
  1760.             /* Handle $smarty.* variable references as a special case. */
  1761.             if ($_var_name == 'smarty') {
  1762.                 /*
  1763.                  * If the reference could be compiled, use the compiled output;
  1764.                  * otherwise, fall back on the $smarty variable generated at
  1765.                  * run-time.
  1766.                  */
  1767.                 if (($smarty_ref = $this->_compile_smarty_ref($_indexes)) !== null) {
  1768.                     $_output = $smarty_ref;
  1769.                 } else {
  1770.                     $_var_name = substr(array_shift($_indexes), 1);
  1771.                     $_output = "\$this->_smarty_vars['$_var_name']";
  1772.                 }
  1773.             } elseif(is_numeric($_var_name) && is_numeric(substr($var_expr, 0, 1))) {
  1774.                 // because . is the operator for accessing arrays thru inidizes we need to put it together again for floating point numbers
  1775.                 if(count($_indexes) > 0)
  1776.                 {
  1777.                     $_var_name .= implode("", $_indexes);
  1778.                     $_indexes = array();
  1779.                 }
  1780.                 $_output = $_var_name;
  1781.             } else {
  1782.                 $_output = "\$this->_tpl_vars['$_var_name']";
  1783.             }
  1784.  
  1785.             foreach ($_indexes as $_index) {
  1786.                 if (substr($_index, 0, 1) == '[') {
  1787.                     $_index = substr($_index, 1, -1);
  1788.                     if (is_numeric($_index)) {
  1789.                         $_output .= "[$_index]";
  1790.                     } elseif (substr($_index, 0, 1) == '$') {
  1791.                         if (strpos($_index, '.') !== false) {
  1792.                             $_output .= '[' . $this->_parse_var($_index) . ']';
  1793.                         } else {
  1794.                             $_output .= "[\$this->_tpl_vars['" . substr($_index, 1) . "']]";
  1795.                         }
  1796.                     } else {
  1797.                         $_var_parts = explode('.', $_index);
  1798.                         $_var_section = $_var_parts[0];
  1799.                         $_var_section_prop = isset($_var_parts[1]) ? $_var_parts[1] : 'index';
  1800.                         $_output .= "[\$this->_sections['$_var_section']['$_var_section_prop']]";
  1801.                     }
  1802.                 } else if (substr($_index, 0, 1) == '.') {
  1803.                     if (substr($_index, 1, 1) == '$')
  1804.                         $_output .= "[\$this->_tpl_vars['" . substr($_index, 2) . "']]";
  1805.                     else
  1806.                         $_output .= "['" . substr($_index, 1) . "']";
  1807.                 } else if (substr($_index,0,2) == '->') {
  1808.                     if(substr($_index,2,2) == '__') {
  1809.                         $this->_syntax_error('call to internal object members is not allowed', E_USER_ERROR, __FILE__, __LINE__);
  1810.                     } elseif($this->security && substr($_index, 2, 1) == '_') {
  1811.                         $this->_syntax_error('(secure) call to private object member is not allowed', E_USER_ERROR, __FILE__, __LINE__);
  1812.                     } elseif (substr($_index, 2, 1) == '$') {
  1813.                         if ($this->security) {
  1814.                             $this->_syntax_error('(secure) call to dynamic object member is not allowed', E_USER_ERROR, __FILE__, __LINE__);
  1815.                         } else {
  1816.                             $_output .= '->{(($_var=$this->_tpl_vars[\''.substr($_index,3).'\']) && substr($_var,0,2)!=\'__\') ? $_var : $this->trigger_error("cannot access property \\"$_var\\"")}';
  1817.                         }
  1818.                     } else {
  1819.                         $_output .= $_index;
  1820.                     }
  1821.                 } elseif (substr($_index, 0, 1) == '(') {
  1822.                     $_index = $this->_parse_parenth_args($_index);
  1823.                     $_output .= $_index;
  1824.                 } else {
  1825.                     $_output .= $_index;
  1826.                 }
  1827.             }
  1828.         }
  1829.  
  1830.         return $_output;
  1831.     }
  1832.  
  1833.     /**
  1834.      * parse arguments in function call parenthesis
  1835.      *
  1836.      * @param string $parenth_args
  1837.      * @return string
  1838.      */
  1839.     function _parse_parenth_args($parenth_args)
  1840.     {
  1841.         preg_match_all('~' . $this->_param_regexp . '~',$parenth_args, $match);
  1842.         $orig_vals = $match = $match[0];
  1843.         $this->_parse_vars_props($match);
  1844.         $replace = array();
  1845.         for ($i = 0, $count = count($match); $i < $count; $i++) {
  1846.             $replace[$orig_vals[$i]] = $match[$i];
  1847.         }
  1848.         return strtr($parenth_args, $replace);
  1849.     }
  1850.  
  1851.     /**
  1852.      * parse configuration variable expression into PHP code
  1853.      *
  1854.      * @param string $conf_var_expr
  1855.      */
  1856.     function _parse_conf_var($conf_var_expr)
  1857.     {
  1858.         $parts = explode('|', $conf_var_expr, 2);
  1859.         $var_ref = $parts[0];
  1860.         $modifiers = isset($parts[1]) ? $parts[1] : '';
  1861.  
  1862.         $var_name = substr($var_ref, 1, -1);
  1863.  
  1864.         $output = "\$this->_config[0]['vars']['$var_name']";
  1865.  
  1866.         $this->_parse_modifiers($output, $modifiers);
  1867.  
  1868.         return $output;
  1869.     }
  1870.  
  1871.     /**
  1872.      * parse section property expression into PHP code
  1873.      *
  1874.      * @param string $section_prop_expr
  1875.      * @return string
  1876.      */
  1877.     function _parse_section_prop($section_prop_expr)
  1878.     {
  1879.         $parts = explode('|', $section_prop_expr, 2);
  1880.         $var_ref = $parts[0];
  1881.         $modifiers = isset($parts[1]) ? $parts[1] : '';
  1882.  
  1883.         preg_match('!%(\w+)\.(\w+)%!', $var_ref, $match);
  1884.         $section_name = $match[1];
  1885.         $prop_name = $match[2];
  1886.  
  1887.         $output = "\$this->_sections['$section_name']['$prop_name']";
  1888.  
  1889.         $this->_parse_modifiers($output, $modifiers);
  1890.  
  1891.         return $output;
  1892.     }
  1893.  
  1894.  
  1895.     /**
  1896.      * parse modifier chain into PHP code
  1897.      *
  1898.      * sets $output to parsed modified chain
  1899.      * @param string $output
  1900.      * @param string $modifier_string
  1901.      */
  1902.     function _parse_modifiers(&$output, $modifier_string)
  1903.     {
  1904.         preg_match_all('~\|(@?\w+)((?>:(?:'. $this->_qstr_regexp . '|[^|]+))*)~', '|' . $modifier_string, $_match);
  1905.         list(, $_modifiers, $modifier_arg_strings) = $_match;
  1906.  
  1907.         for ($_i = 0, $_for_max = count($_modifiers); $_i < $_for_max; $_i++) {
  1908.             $_modifier_name = $_modifiers[$_i];
  1909.  
  1910.             if($_modifier_name == 'smarty') {
  1911.                 // skip smarty modifier
  1912.                 continue;
  1913.             }
  1914.  
  1915.             preg_match_all('~:(' . $this->_qstr_regexp . '|[^:]+)~', $modifier_arg_strings[$_i], $_match);
  1916.             $_modifier_args = $_match[1];
  1917.  
  1918.             if (substr($_modifier_name, 0, 1) == '@') {
  1919.                 $_map_array = false;
  1920.                 $_modifier_name = substr($_modifier_name, 1);
  1921.             } else {
  1922.                 $_map_array = true;
  1923.             }
  1924.  
  1925.             if (empty($this->_plugins['modifier'][$_modifier_name])
  1926.                 && !$this->_get_plugin_filepath('modifier', $_modifier_name)
  1927.                 && function_exists($_modifier_name)) {
  1928.                 if ($this->security && !in_array($_modifier_name, $this->security_settings['MODIFIER_FUNCS'])) {
  1929.                     $this->_trigger_fatal_error("[plugin] (secure mode) modifier '$_modifier_name' is not allowed" , $this->_current_file, $this->_current_line_no, __FILE__, __LINE__);
  1930.                 } else {
  1931.                     $this->_plugins['modifier'][$_modifier_name] = array($_modifier_name,  null, null, false);
  1932.                 }
  1933.             }
  1934.             $this->_add_plugin('modifier', $_modifier_name);
  1935.  
  1936.             $this->_parse_vars_props($_modifier_args);
  1937.  
  1938.             if($_modifier_name == 'default') {
  1939.                 // supress notifications of default modifier vars and args
  1940.                 if(substr($output, 0, 1) == '$') {
  1941.                     $output = '@' . $output;
  1942.                 }
  1943.                 if(isset($_modifier_args[0]) && substr($_modifier_args[0], 0, 1) == '$') {
  1944.                     $_modifier_args[0] = '@' . $_modifier_args[0];
  1945.                 }
  1946.             }
  1947.             if (count($_modifier_args) > 0)
  1948.                 $_modifier_args = ', '.implode(', ', $_modifier_args);
  1949.             else
  1950.                 $_modifier_args = '';
  1951.  
  1952.             if ($_map_array) {
  1953.                 $output = "((is_array(\$_tmp=$output)) ? \$this->_run_mod_handler('$_modifier_name', true, \$_tmp$_modifier_args) : " . $this->_compile_plugin_call('modifier', $_modifier_name) . "(\$_tmp$_modifier_args))";
  1954.  
  1955.             } else {
  1956.  
  1957.                 $output = $this->_compile_plugin_call('modifier', $_modifier_name)."($output$_modifier_args)";
  1958.  
  1959.             }
  1960.         }
  1961.     }
  1962.  
  1963.  
  1964.     /**
  1965.      * add plugin
  1966.      *
  1967.      * @param string $type
  1968.      * @param string $name
  1969.      * @param boolean? $delayed_loading
  1970.      */
  1971.     function _add_plugin($type, $name, $delayed_loading = null)
  1972.     {
  1973.         if (!isset($this->_plugin_info[$type])) {
  1974.             $this->_plugin_info[$type] = array();
  1975.         }
  1976.         if (!isset($this->_plugin_info[$type][$name])) {
  1977.             $this->_plugin_info[$type][$name] = array($this->_current_file,
  1978.                                                       $this->_current_line_no,
  1979.                                                       $delayed_loading);
  1980.         }
  1981.     }
  1982.  
  1983.  
  1984.     /**
  1985.      * Compiles references of type $smarty.foo
  1986.      *
  1987.      * @param string $indexes
  1988.      * @return string
  1989.      */
  1990.     function _compile_smarty_ref(&$indexes)
  1991.     {
  1992.         /* Extract the reference name. */
  1993.         $_ref = substr($indexes[0], 1);
  1994.         foreach($indexes as $_index_no=>$_index) {
  1995.             if (substr($_index, 0, 1) != '.' && $_index_no<2 || !preg_match('~^(\.|\[|->)~', $_index)) {
  1996.                 $this->_syntax_error('$smarty' . implode('', array_slice($indexes, 0, 2)) . ' is an invalid reference', E_USER_ERROR, __FILE__, __LINE__);
  1997.             }
  1998.         }
  1999.  
  2000.         switch ($_ref) {
  2001.             case 'now':
  2002.                 $compiled_ref = 'time()';
  2003.                 $_max_index = 1;
  2004.                 break;
  2005.  
  2006.             case 'foreach':
  2007.                 array_shift($indexes);
  2008.                 $_var = $this->_parse_var_props(substr($indexes[0], 1));
  2009.                 $_propname = substr($indexes[1], 1);
  2010.                 $_max_index = 1;
  2011.                 switch ($_propname) {
  2012.                     case 'index':
  2013.                         array_shift($indexes);
  2014.                         $compiled_ref = "(\$this->_foreach[$_var]['iteration']-1)";
  2015.                         break;
  2016.                         
  2017.                     case 'first':
  2018.                         array_shift($indexes);
  2019.                         $compiled_ref = "(\$this->_foreach[$_var]['iteration'] <= 1)";
  2020.                         break;
  2021.  
  2022.                     case 'last':
  2023.                         array_shift($indexes);
  2024.                         $compiled_ref = "(\$this->_foreach[$_var]['iteration'] == \$this->_foreach[$_var]['total'])";
  2025.                         break;
  2026.                         
  2027.                     case 'show':
  2028.                         array_shift($indexes);
  2029.                         $compiled_ref = "(\$this->_foreach[$_var]['total'] > 0)";
  2030.                         break;
  2031.                         
  2032.                     default:
  2033.                         unset($_max_index);
  2034.                         $compiled_ref = "\$this->_foreach[$_var]";
  2035.                 }
  2036.                 break;
  2037.  
  2038.             case 'section':
  2039.                 array_shift($indexes);
  2040.                 $_var = $this->_parse_var_props(substr($indexes[0], 1));
  2041.                 $compiled_ref = "\$this->_sections[$_var]";
  2042.                 break;
  2043.  
  2044.             case 'get':
  2045.                 $compiled_ref = ($this->request_use_auto_globals) ? '$_GET' : "\$GLOBALS['HTTP_GET_VARS']";
  2046.                 break;
  2047.  
  2048.             case 'post':
  2049.                 $compiled_ref = ($this->request_use_auto_globals) ? '$_POST' : "\$GLOBALS['HTTP_POST_VARS']";
  2050.                 break;
  2051.  
  2052.             case 'cookies':
  2053.                 $compiled_ref = ($this->request_use_auto_globals) ? '$_COOKIE' : "\$GLOBALS['HTTP_COOKIE_VARS']";
  2054.                 break;
  2055.  
  2056.             case 'env':
  2057.                 $compiled_ref = ($this->request_use_auto_globals) ? '$_ENV' : "\$GLOBALS['HTTP_ENV_VARS']";
  2058.                 break;
  2059.  
  2060.             case 'server':
  2061.                 $compiled_ref = ($this->request_use_auto_globals) ? '$_SERVER' : "\$GLOBALS['HTTP_SERVER_VARS']";
  2062.                 break;
  2063.  
  2064.             case 'session':
  2065.                 $compiled_ref = ($this->request_use_auto_globals) ? '$_SESSION' : "\$GLOBALS['HTTP_SESSION_VARS']";
  2066.                 break;
  2067.  
  2068.             /*
  2069.              * These cases are handled either at run-time or elsewhere in the
  2070.              * compiler.
  2071.              */
  2072.             case 'request':
  2073.                 if ($this->request_use_auto_globals) {
  2074.                     $compiled_ref = '$_REQUEST';
  2075.                     break;
  2076.                 } else {
  2077.                     $this->_init_smarty_vars = true;
  2078.                 }
  2079.                 return null;
  2080.  
  2081.             case 'capture':
  2082.                 return null;
  2083.  
  2084.             case 'template':
  2085.                 $compiled_ref = "'$this->_current_file'";
  2086.                 $_max_index = 1;
  2087.                 break;
  2088.  
  2089.             case 'version':
  2090.                 $compiled_ref = "'$this->_version'";
  2091.                 $_max_index = 1;
  2092.                 break;
  2093.  
  2094.             case 'const':
  2095.                 if ($this->security && !$this->security_settings['ALLOW_CONSTANTS']) {
  2096.                     $this->_syntax_error("(secure mode) constants not permitted",
  2097.                                          E_USER_WARNING, __FILE__, __LINE__);
  2098.                     return;
  2099.                 }
  2100.                 array_shift($indexes);
  2101.                 if (preg_match('!^\.\w+$!', $indexes[0])) {
  2102.                     $compiled_ref = '@' . substr($indexes[0], 1);
  2103.                 } else {
  2104.                     $_val = $this->_parse_var_props(substr($indexes[0], 1));
  2105.                     $compiled_ref = '@constant(' . $_val . ')';
  2106.                 }
  2107.                 $_max_index = 1;
  2108.                 break;
  2109.  
  2110.             case 'config':
  2111.                 $compiled_ref = "\$this->_config[0]['vars']";
  2112.                 $_max_index = 3;
  2113.                 break;
  2114.  
  2115.             case 'ldelim':
  2116.                 $compiled_ref = "'$this->left_delimiter'";
  2117.                 break;
  2118.  
  2119.             case 'rdelim':
  2120.                 $compiled_ref = "'$this->right_delimiter'";
  2121.                 break;
  2122.                 
  2123.             default:
  2124.                 $this->_syntax_error('$smarty.' . $_ref . ' is an unknown reference', E_USER_ERROR, __FILE__, __LINE__);
  2125.                 break;
  2126.         }
  2127.  
  2128.         if (isset($_max_index) && count($indexes) > $_max_index) {
  2129.             $this->_syntax_error('$smarty' . implode('', $indexes) .' is an invalid reference', E_USER_ERROR, __FILE__, __LINE__);
  2130.         }
  2131.  
  2132.         array_shift($indexes);
  2133.         return $compiled_ref;
  2134.     }
  2135.  
  2136.     /**
  2137.      * compiles call to plugin of type $type with name $name
  2138.      * returns a string containing the function-name or method call
  2139.      * without the paramter-list that would have follow to make the
  2140.      * call valid php-syntax
  2141.      *
  2142.      * @param string $type
  2143.      * @param string $name
  2144.      * @return string
  2145.      */
  2146.     function _compile_plugin_call($type, $name) {
  2147.         if (isset($this->_plugins[$type][$name])) {
  2148.             /* plugin loaded */
  2149.             if (is_array($this->_plugins[$type][$name][0])) {
  2150.                 return ((is_object($this->_plugins[$type][$name][0][0])) ?
  2151.                         "\$this->_plugins['$type']['$name'][0][0]->"    /* method callback */
  2152.                         : (string)($this->_plugins[$type][$name][0][0]).'::'    /* class callback */
  2153.                        ). $this->_plugins[$type][$name][0][1];
  2154.  
  2155.             } else {
  2156.                 /* function callback */
  2157.                 return $this->_plugins[$type][$name][0];
  2158.  
  2159.             }
  2160.         } else {
  2161.             /* plugin not loaded -> auto-loadable-plugin */
  2162.             return 'smarty_'.$type.'_'.$name;
  2163.  
  2164.         }
  2165.     }
  2166.  
  2167.     /**
  2168.      * load pre- and post-filters
  2169.      */
  2170.     function _load_filters()
  2171.     {
  2172.         if (count($this->_plugins['prefilter']) > 0) {
  2173.             foreach ($this->_plugins['prefilter'] as $filter_name => $prefilter) {
  2174.                 if ($prefilter === false) {
  2175.                     unset($this->_plugins['prefilter'][$filter_name]);
  2176.                     $_params = array('plugins' => array(array('prefilter', $filter_name, null, null, false)));
  2177.                     require_once(SMARTY_CORE_DIR . 'core.load_plugins.php');
  2178.                     smarty_core_load_plugins($_params, $this);
  2179.                 }
  2180.             }
  2181.         }
  2182.         if (count($this->_plugins['postfilter']) > 0) {
  2183.             foreach ($this->_plugins['postfilter'] as $filter_name => $postfilter) {
  2184.                 if ($postfilter === false) {
  2185.                     unset($this->_plugins['postfilter'][$filter_name]);
  2186.                     $_params = array('plugins' => array(array('postfilter', $filter_name, null, null, false)));
  2187.                     require_once(SMARTY_CORE_DIR . 'core.load_plugins.php');
  2188.                     smarty_core_load_plugins($_params, $this);
  2189.                 }
  2190.             }
  2191.         }
  2192.     }
  2193.  
  2194.  
  2195.     /**
  2196.      * Quote subpattern references
  2197.      *
  2198.      * @param string $string
  2199.      * @return string
  2200.      */
  2201.     function _quote_replace($string)
  2202.     {
  2203.         return strtr($string, array('\\' => '\\\\', '$' => '\\$'));
  2204.     }
  2205.  
  2206.     /**
  2207.      * display Smarty syntax error
  2208.      *
  2209.      * @param string $error_msg
  2210.      * @param integer $error_type
  2211.      * @param string $file
  2212.      * @param integer $line
  2213.      */
  2214.     function _syntax_error($error_msg, $error_type = E_USER_ERROR, $file=null, $line=null)
  2215.     {
  2216.         $this->_trigger_fatal_error("syntax error: $error_msg", $this->_current_file, $this->_current_line_no, $file, $line, $error_type);
  2217.     }
  2218.  
  2219.  
  2220.     /**
  2221.      * check if the compilation changes from cacheable to
  2222.      * non-cacheable state with the beginning of the current
  2223.      * plugin. return php-code to reflect the transition.
  2224.      * @return string
  2225.      */
  2226.     function _push_cacheable_state($type, $name) {
  2227.         $_cacheable = !isset($this->_plugins[$type][$name]) || $this->_plugins[$type][$name][4];
  2228.         if ($_cacheable
  2229.             || 0<$this->_cacheable_state++) return '';
  2230.         if (!isset($this->_cache_serial)) $this->_cache_serial = md5(uniqid('Smarty'));
  2231.         $_ret = 'if ($this->caching && !$this->_cache_including): echo \'{nocache:'
  2232.             . $this->_cache_serial . '#' . $this->_nocache_count
  2233.             . '}\'; endif;';
  2234.         return $_ret;
  2235.     }
  2236.  
  2237.  
  2238.     /**
  2239.      * check if the compilation changes from non-cacheable to
  2240.      * cacheable state with the end of the current plugin return
  2241.      * php-code to reflect the transition.
  2242.      * @return string
  2243.      */
  2244.     function _pop_cacheable_state($type, $name) {
  2245.         $_cacheable = !isset($this->_plugins[$type][$name]) || $this->_plugins[$type][$name][4];
  2246.         if ($_cacheable
  2247.             || --$this->_cacheable_state>0) return '';
  2248.         return 'if ($this->caching && !$this->_cache_including): echo \'{/nocache:'
  2249.             . $this->_cache_serial . '#' . ($this->_nocache_count++)
  2250.             . '}\'; endif;';
  2251.     }
  2252.  
  2253.  
  2254.     /**
  2255.      * push opening tag-name, file-name and line-number on the tag-stack
  2256.      * @param string the opening tag's name
  2257.      */
  2258.     function _push_tag($open_tag)
  2259.     {
  2260.         array_push($this->_tag_stack, array($open_tag, $this->_current_line_no));
  2261.     }
  2262.  
  2263.     /**
  2264.      * pop closing tag-name
  2265.      * raise an error if this stack-top doesn't match with the closing tag
  2266.      * @param string the closing tag's name
  2267.      * @return string the opening tag's name
  2268.      */
  2269.     function _pop_tag($close_tag)
  2270.     {
  2271.         $message = '';
  2272.         if (count($this->_tag_stack)>0) {
  2273.             list($_open_tag, $_line_no) = array_pop($this->_tag_stack);
  2274.             if ($close_tag == $_open_tag) {
  2275.                 return $_open_tag;
  2276.             }
  2277.             if ($close_tag == 'if' && ($_open_tag == 'else' || $_open_tag == 'elseif' )) {
  2278.                 return $this->_pop_tag($close_tag);
  2279.             }
  2280.             if ($close_tag == 'section' && $_open_tag == 'sectionelse') {
  2281.                 $this->_pop_tag($close_tag);
  2282.                 return $_open_tag;
  2283.             }
  2284.             if ($close_tag == 'foreach' && $_open_tag == 'foreachelse') {
  2285.                 $this->_pop_tag($close_tag);
  2286.                 return $_open_tag;
  2287.             }
  2288.             if ($_open_tag == 'else' || $_open_tag == 'elseif') {
  2289.                 $_open_tag = 'if';
  2290.             } elseif ($_open_tag == 'sectionelse') {
  2291.                 $_open_tag = 'section';
  2292.             } elseif ($_open_tag == 'foreachelse') {
  2293.                 $_open_tag = 'foreach';
  2294.             }
  2295.             $message = " expected {/$_open_tag} (opened line $_line_no).";
  2296.         }
  2297.         $this->_syntax_error("mismatched tag {/$close_tag}.$message",
  2298.                              E_USER_ERROR, __FILE__, __LINE__);
  2299.     }
  2300.  
  2301. }
  2302.  
  2303. /**
  2304.  * compare to values by their string length
  2305.  *
  2306.  * @access private
  2307.  * @param string $a
  2308.  * @param string $b
  2309.  * @return 0|-1|1
  2310.  */
  2311. function _smarty_sort_length($a, $b)
  2312. {
  2313.     if($a == $b)
  2314.         return 0;
  2315.  
  2316.     if(strlen($a) == strlen($b))
  2317.         return ($a > $b) ? -1 : 1;
  2318.  
  2319.     return (strlen($a) > strlen($b)) ? -1 : 1;
  2320. }
  2321.  
  2322.  
  2323. /* vim: set et: */
  2324.  
  2325. ?>