diff options
Diffstat (limited to 'include/smarty/libs/sysplugins/smarty_internal_config_file_compiler.php')
| -rw-r--r-- | include/smarty/libs/sysplugins/smarty_internal_config_file_compiler.php | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/include/smarty/libs/sysplugins/smarty_internal_config_file_compiler.php b/include/smarty/libs/sysplugins/smarty_internal_config_file_compiler.php new file mode 100644 index 000000000..b16a6940d --- /dev/null +++ b/include/smarty/libs/sysplugins/smarty_internal_config_file_compiler.php @@ -0,0 +1,144 @@ +<?php +/** + * Smarty Internal Plugin Config File Compiler + * + * This is the config file compiler class. It calls the lexer and parser to + * perform the compiling. + * + * @package Smarty + * @subpackage Config + * @author Uwe Tews + */ + +/** + * Main config file compiler class + * + * @package Smarty + * @subpackage Config + */ +class Smarty_Internal_Config_File_Compiler { + + /** + * Lexer object + * + * @var object + */ + public $lex; + + /** + * Parser object + * + * @var object + */ + public $parser; + + /** + * Smarty object + * + * @var Smarty object + */ + public $smarty; + + /** + * Smarty object + * + * @var Smarty_Internal_Config object + */ + public $config; + + /** + * Compiled config data sections and variables + * + * @var array + */ + public $config_data = array(); + + /** + * Initialize compiler + * + * @param Smarty $smarty base instance + */ + public function __construct($smarty) + { + $this->smarty = $smarty; + $this->config_data['sections'] = array(); + $this->config_data['vars'] = array(); + } + + /** + * Method to compile a Smarty template. + * + * @param Smarty_Internal_Config $config config object + * @return bool true if compiling succeeded, false if it failed + */ + public function compileSource(Smarty_Internal_Config $config) + { + /* here is where the compiling takes place. Smarty + tags in the templates are replaces with PHP code, + then written to compiled files. */ + $this->config = $config; + // get config file source + $_content = $config->source->content . "\n"; + // on empty template just return + if ($_content == '') { + return true; + } + // init the lexer/parser to compile the config file + $lex = new Smarty_Internal_Configfilelexer($_content, $this->smarty); + $parser = new Smarty_Internal_Configfileparser($lex, $this); + if ($this->smarty->_parserdebug) $parser->PrintTrace(); + // get tokens from lexer and parse them + while ($lex->yylex()) { + if ($this->smarty->_parserdebug) echo "<br>Parsing {$parser->yyTokenName[$lex->token]} Token {$lex->value} Line {$lex->line} \n"; + $parser->doParse($lex->token, $lex->value); + } + // finish parsing process + $parser->doParse(0, 0); + $config->compiled_config = '<?php $_config_vars = ' . var_export($this->config_data, true) . '; ?>'; + } + + /** + * display compiler error messages without dying + * + * If parameter $args is empty it is a parser detected syntax error. + * In this case the parser is called to obtain information about exspected tokens. + * + * If parameter $args contains a string this is used as error message + * + * @param string $args individual error message or null + */ + public function trigger_config_file_error($args = null) + { + $this->lex = Smarty_Internal_Configfilelexer::instance(); + $this->parser = Smarty_Internal_Configfileparser::instance(); + // get template source line which has error + $line = $this->lex->line; + if (isset($args)) { + // $line--; + } + $match = preg_split("/\n/", $this->lex->data); + $error_text = "Syntax error in config file '{$this->config->source->filepath}' on line {$line} '{$match[$line-1]}' "; + if (isset($args)) { + // individual error message + $error_text .= $args; + } else { + // exspected token from parser + foreach ($this->parser->yy_get_expected_tokens($this->parser->yymajor) as $token) { + $exp_token = $this->parser->yyTokenName[$token]; + if (isset($this->lex->smarty_token_names[$exp_token])) { + // token type from lexer + $expect[] = '"' . $this->lex->smarty_token_names[$exp_token] . '"'; + } else { + // otherwise internal token name + $expect[] = $this->parser->yyTokenName[$token]; + } + } + // output parser error message + $error_text .= ' - Unexpected "' . $this->lex->value . '", expected one of: ' . implode(' , ', $expect); + } + throw new SmartyCompilerException($error_text); + } + +} + +?>
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