lib/api/smarty/sysplugins/smarty_internal_compile_private_php.php

   1 <?php
   2 /**
   3  * Smarty Internal Plugin Compile PHP Expression
   4  * Compiles any tag which will output an expression or variable
   5  *
   6  * @package    Smarty
   7  * @subpackage Compiler
   8  * @author     Uwe Tews
   9  */
  10
  11 /**
  12  * Smarty Internal Plugin Compile PHP Expression Class
  13  *
  14  * @package    Smarty
  15  * @subpackage Compiler
  16  */
  17 class Smarty_Internal_Compile_Private_Php extends Smarty_Internal_CompileBase
  18 {
  19
  20     /**
  21      * Attribute definition: Overwrites base class.
  22      *
  23      * @var array
  24      * @see Smarty_Internal_CompileBase
  25      */
  26     public $required_attributes = array('code', 'type');
  27
  28     /**
  29      * Compiles code for generating output from any expression
  30      *
  31      * @param array                                 $args      array with attributes from parser
  32      * @param \Smarty_Internal_TemplateCompilerBase $compiler  compiler object
  33      * @param array                                 $parameter array with compilation parameter
  34      *
  35      * @return string
  36      * @throws \SmartyException
  37      */
  38     public function compile($args, Smarty_Internal_TemplateCompilerBase $compiler, $parameter)
  39     {
  40         // check and get attributes
  41         $_attr = $this->getAttributes($compiler, $args);
  42         $compiler->has_code = false;
  43         if ($_attr['type'] == 'xml') {
  44             $compiler->tag_nocache = true;
  45             $save = $compiler->template->has_nocache_code;
  46             $compiler->template->has_nocache_code = $save;
  47             $output = addcslashes($_attr['code'], "'\\");
  48             $compiler->parser->current_buffer->append_subtree(new Smarty_Internal_ParseTree_Tag($compiler->parser, $compiler->processNocacheCode("<?php echo '" . $output . "';?>", $compiler, true)));
  49             return '';
  50         }
  51         if ($_attr['type'] != 'tag') {
  52              if ($compiler->php_handling == Smarty::PHP_REMOVE) {
  53                 return '';
  54             } elseif ($compiler->php_handling == Smarty::PHP_QUOTE) {
  55                 $output = preg_replace_callback('#(<\?(?:php|=)?)|(<%)|(<script\s+language\s*=\s*["\']?\s*php\s*["\']?\s*>)|(\?>)|(%>)|(<\/script>)#i', array($this,
  56                     'quote'), $_attr['code']);
  57                 $compiler->parser->current_buffer->append_subtree(new Smarty_Internal_ParseTree_Text($compiler->parser, $output));
  58                 return '';
  59             } elseif ($compiler->php_handling == Smarty::PHP_PASSTHRU || $_attr['type'] == 'unmatched') {
  60                 $compiler->tag_nocache = true;
  61                 $save = $compiler->template->has_nocache_code;
  62                 $compiler->template->has_nocache_code = $save;
  63                 $output = addcslashes($_attr['code'], "'\\");
  64                 $compiler->parser->current_buffer->append_subtree(new Smarty_Internal_ParseTree_Tag($compiler->parser, $compiler->processNocacheCode("<?php echo '" . $output . "';?>", $compiler, true)));
  65                 return '';
  66             } elseif ($compiler->php_handling == Smarty::PHP_ALLOW) {
  67                 if (!($compiler->smarty instanceof SmartyBC)) {
  68                     $compiler->trigger_template_error('$smarty->php_handling PHP_ALLOW not allowed. Use SmartyBC to enable it', $compiler->lex->taglineno);
  69                 }
  70                 $compiler->has_code = true;
  71                 return $_attr['code'];
  72             } else {
  73                 $compiler->trigger_template_error('Illegal $smarty->php_handling value', $compiler->lex->taglineno);
  74             }
  75         } else {
  76             $compiler->has_code = true;
  77             if (!($compiler->smarty instanceof SmartyBC)) {
  78                 $compiler->trigger_template_error('{php}[/php} tags not allowed. Use SmartyBC to enable them', $compiler->lex->taglineno);
  79             }
  80             $ldel = preg_quote($compiler->smarty->left_delimiter, '#');
  81             $rdel = preg_quote($compiler->smarty->right_delimiter, '#');
  82             preg_match("#^({$ldel}php\\s*)((.)*?)({$rdel})#", $_attr['code'], $match);
  83             if (!empty($match[2])) {
  84                 if ('nocache' == trim($match[2])) {
  85                     $compiler->tag_nocache = true;
  86                 } else {
  87                     $compiler->trigger_template_error("illegal value of option flag \"{$match[2]}\"", $compiler->lex->taglineno);
  88                 }
  89             }
  90             return preg_replace(array("#^{$ldel}\\s*php\\s*(.)*?{$rdel}#",
  91                                     "#{$ldel}\\s*/\\s*php\\s*{$rdel}$#"), array('<?php ', '?>'), $_attr['code']);
  92         }
  93     }
  94
  95     /**
  96      * Lexer code for PHP tags
  97      *
  98      * This code has been moved from lexer here fo easier debugging and maintenance
  99      *
 100      * @param $lex
 101      */
 102     public function parsePhp($lex)
 103     {
 104         $close = 0;
 105         $lex->taglineno = $lex->line;
 106         $closeTag = '?>';
 107         if (strpos($lex->value, '<?xml') === 0) {
 108             $lex->phpType = 'xml';
 109         } elseif (strpos($lex->value, '<?') === 0) {
 110             $lex->phpType = 'php';
 111         } elseif (strpos($lex->value, '<%') === 0) {
 112             $lex->phpType = 'asp';
 113             $closeTag = '%>';
 114         } elseif (strpos($lex->value, '%>') === 0) {
 115             $lex->phpType = 'unmatched';
 116         } elseif (strpos($lex->value, '?>') === 0) {
 117             $lex->phpType = 'unmatched';
 118         } elseif (strpos($lex->value, '<s') === 0) {
 119             $lex->phpType = 'script';
 120             $closeTag = '</script>';
 121         } elseif (strpos($lex->value, $lex->smarty->left_delimiter) === 0) {
 122             if ($lex->isAutoLiteral()) {
 123                 $lex->token = Smarty_Internal_Templateparser::TP_TEXT;
 124                 return;
 125             }
 126             $closeTag = "{$lex->smarty->left_delimiter}/php{$lex->smarty->right_delimiter}";
 127             if ($lex->value == $closeTag) {
 128                 $lex->compiler->trigger_template_error("unexpected closing tag '{$closeTag}'");
 129             }
 130             $lex->phpType = 'tag';
 131         }
 132         if ($lex->phpType == 'unmatched') {
 133             return;
 134         }
 135         if (($lex->phpType == 'php' || $lex->phpType == 'asp') && ($lex->compiler->php_handling == Smarty::PHP_PASSTHRU || $lex->compiler->php_handling == Smarty::PHP_QUOTE)) {
 136             return;
 137         }
 138         $start = $lex->counter + strlen($lex->value);
 139         $body = true;
 140         if (preg_match('~' . preg_quote($closeTag, '~') . '~i', $lex->data, $match, PREG_OFFSET_CAPTURE, $start)) {
 141             $close = $match[0][1];
 142         } else {
 143             $lex->compiler->trigger_template_error("missing closing tag '{$closeTag}'");
 144         }
 145         while ($body) {
 146             if (preg_match('~([/][*])|([/][/][^\n]*)|(\'[^\'\\\\]*(?:\\.[^\'\\\\]*)*\')|("[^"\\\\]*(?:\\.[^"\\\\]*)*")~', $lex->data, $match, PREG_OFFSET_CAPTURE, $start)) {
 147                 $value = $match[0][0];
 148                 $from = $pos = $match[0][1];
 149                 if ($pos > $close) {
 150                     $body = false;
 151                 } else {
 152                     $start = $pos + strlen($value);
 153                     $phpCommentStart = $value == '/*';
 154                     if ($phpCommentStart) {
 155                         $phpCommentEnd = preg_match('~([*][/])~', $lex->data, $match, PREG_OFFSET_CAPTURE, $start);
 156                         if ($phpCommentEnd) {
 157                             $pos2 = $match[0][1];
 158                             $start = $pos2 + strlen($match[0][0]);
 159                         }
 160                     }
 161                     while ($close > $pos && $close < $start) {
 162                         if (preg_match('~' . preg_quote($closeTag, '~') . '~i', $lex->data, $match, PREG_OFFSET_CAPTURE, $from)) {
 163                             $close = $match[0][1];
 164                             $from = $close + strlen($match[0][0]);
 165                         } else {
 166                             $lex->compiler->trigger_template_error("missing closing tag '{$closeTag}'");
 167                         }
 168                     }
 169                     if ($phpCommentStart && (!$phpCommentEnd || $pos2 > $close)) {
 170                         $lex->taglineno = $lex->line + substr_count(substr($lex->data, $lex->counter, $start), "\n");
 171                         $lex->compiler->trigger_template_error("missing PHP comment closing tag '*/'");
 172                     }
 173                 }
 174             } else {
 175                 $body = false;
 176             }
 177         }
 178         $lex->value = substr($lex->data, $lex->counter, $close + strlen($closeTag) - $lex->counter);
 179     }
 180
 181     /*
 182      * Call back function for $php_handling = PHP_QUOTE
 183      *
 184      */
 185     private function quote($match)
 186     {
 187         return htmlspecialchars($match[0], ENT_QUOTES);
 188     }
 189 }