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<?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 class name
*
* @var string
*/
public $lexer_class;
/**
* Parser class name
*
* @var string
*/
public $parser_class;
/**
* Lexer object
*
* @var object
*/
public $lex;
/**
* Parser object
*
* @var object
*/
public $parser;
/**
* Smarty object
*
* @var Smarty object
*/
public $smarty;
/**
* Smarty object
*
* @var Smarty_Internal_Template object
*/
public $template;
/**
* Compiled config data sections and variables
*
* @var array
*/
public $config_data = array();
/**
* compiled config data must always be written
*
* @var bool
*/
public $write_compiled_code = true;
/**
* Initialize compiler
*
* @param string $lexer_class class name
* @param string $parser_class class name
* @param Smarty $smarty global instance
*/
public function __construct($lexer_class, $parser_class, Smarty $smarty)
{
$this->smarty = $smarty;
// get required plugins
$this->lexer_class = $lexer_class;
$this->parser_class = $parser_class;
$this->smarty = $smarty;
$this->config_data['sections'] = array();
$this->config_data['vars'] = array();
}
/**
* Method to compile Smarty config source.
*
* @param Smarty_Internal_Template $template
*
* @return bool true if compiling succeeded, false if it failed
*/
public function compileTemplate(Smarty_Internal_Template $template)
{
$this->template = $template;
$this->template->compiled->file_dependency[$this->template->source->uid] = array($this->template->source->filepath,
$this->template->source->getTimeStamp(),
$this->template->source->type);
if ($this->smarty->debugging) {
$this->smarty->_debug->start_compile($this->template);
}
// init the lexer/parser to compile the config file
/* @var Smarty_Internal_ConfigFileLexer $lex */
$lex = new $this->lexer_class(str_replace(array("\r\n", "\r"), "\n", $template->source->getContent()) .
"\n", $this);
/* @var Smarty_Internal_ConfigFileParser $parser */
$parser = new $this->parser_class($lex, $this);
if (function_exists('mb_internal_encoding') && ((int) ini_get('mbstring.func_overload')) & 2) {
$mbEncoding = mb_internal_encoding();
mb_internal_encoding('ASCII');
} else {
$mbEncoding = null;
}
if ($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
$parser->doParse(0, 0);
if ($mbEncoding) {
mb_internal_encoding($mbEncoding);
}
if ($this->smarty->debugging) {
$this->smarty->_debug->end_compile($this->template);
}
// template header code
$template_header = "<?php /* Smarty version " . Smarty::SMARTY_VERSION . ", created on " .
strftime("%Y-%m-%d %H:%M:%S") . "\n";
$template_header .= " compiled from \"" . $this->template->source->filepath . "\" */ ?>\n";
$code = '<?php $_smarty_tpl->smarty->ext->configLoad->_loadConfigVars($_smarty_tpl, ' .
var_export($this->config_data, true) . '); ?>';
return $template_header . $this->template->smarty->ext->_codeFrame->create($this->template, $code);
}
/**
* 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 expected tokens.
* If parameter $args contains a string this is used as error message
*
* @param string $args individual error message or null
*
* @throws SmartyCompilerException
*/
public function trigger_config_file_error($args = null)
{
$this->lex = Smarty_Internal_Configfilelexer::instance();
$this->parser = Smarty_Internal_Configfileparser::instance();
// get config 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->template->source->filepath}' on line {$line} '{$match[$line - 1]}' ";
if (isset($args)) {
// individual error message
$error_text .= $args;
} else {
// expected token from parser
foreach ($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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