library/smarty/libs/sysplugins/smarty_internal_config_file_compiler.php
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Fri, 13 Nov 2015 04:05:39 +0100
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Kleinere Korrekturen vorm Schlafengehen
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<?php
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/**
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 * Smarty Internal Plugin Config File Compiler
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 * This is the config file compiler class. It calls the lexer and parser to
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 * perform the compiling.
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 *
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 * @package    Smarty
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 * @subpackage Config
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 * @author     Uwe Tews
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 */
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/**
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 * Main config file compiler class
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 *
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 * @package    Smarty
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 * @subpackage Config
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 */
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class Smarty_Internal_Config_File_Compiler {
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    /**
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     * Lexer class name
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     *
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     * @var string
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     */
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    public $lexer_class;
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    /**
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     * Parser class name
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     *
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     * @var string
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     */
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    public $parser_class;
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    /**
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     * Lexer object
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     *
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     * @var object
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     */
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    public $lex;
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    /**
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     * Parser object
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     *
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     * @var object
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     */
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    public $parser;
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    /**
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     * Smarty object
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     *
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     * @var Smarty object
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     */
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    public $smarty;
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    /**
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     * Smarty object
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     *
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     * @var Smarty_Internal_Template object
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     */
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    public $template;
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    /**
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     * Compiled config data sections and variables
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     *
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     * @var array
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     */
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    public $config_data = array();
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    /**
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     * compiled config data must always be written
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     *
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     * @var bool
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     */
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    public $write_compiled_code = true;
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    /**
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     * Initialize compiler
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     *
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     * @param string $lexer_class class name
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     * @param string $parser_class class name
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     * @param Smarty $smarty global instance
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     */
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    public function __construct($lexer_class, $parser_class, Smarty $smarty) {
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        $this->smarty = $smarty;
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        // get required plugins
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        $this->lexer_class = $lexer_class;
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        $this->parser_class = $parser_class;
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        $this->smarty = $smarty;
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        $this->config_data['sections'] = array();
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        $this->config_data['vars'] = array();
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    }
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    /**
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     * Method to compile Smarty config source.
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     *
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     * @param Smarty_Internal_Template $template
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     *
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     * @return bool true if compiling succeeded, false if it failed
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     */
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    public function compileTemplate(Smarty_Internal_Template $template) {
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        $this->template = $template;
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        $this->template->properties['file_dependency'][$this->template->source->uid] = array($this->template->source->name, $this->template->source->timestamp, $this->template->source->type);
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        // on empty config just return
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        if ($template->source->content == '') {
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            return true;
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        }
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        if ($this->smarty->debugging) {
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            Smarty_Internal_Debug::start_compile($this->template);
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        }
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        // init the lexer/parser to compile the config file
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        $lex = new $this->lexer_class(str_replace(array("\r\n", "\r"), "\n", $template->source->content) . "\n", $this);
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        $parser = new $this->parser_class($lex, $this);
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        if (function_exists('mb_internal_encoding') && ((int)ini_get('mbstring.func_overload')) & 2) {
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            $mbEncoding = mb_internal_encoding();
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            mb_internal_encoding('ASCII');
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        } else {
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            $mbEncoding = null;
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        }
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        if ($this->smarty->_parserdebug) {
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            $parser->PrintTrace();
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        }
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        // get tokens from lexer and parse them
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        while ($lex->yylex()) {
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            if ($this->smarty->_parserdebug) {
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                echo "<br>Parsing  {$parser->yyTokenName[$lex->token]} Token {$lex->value} Line {$lex->line} \n";
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            }
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            $parser->doParse($lex->token, $lex->value);
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        }
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        // finish parsing process
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        $parser->doParse(0, 0);
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        if ($mbEncoding) {
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            mb_internal_encoding($mbEncoding);
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        }
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        if ($this->smarty->debugging) {
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            Smarty_Internal_Debug::end_compile($this->template);
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        }
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        // template header code
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        $template_header = "<?php /* Smarty version " . Smarty::SMARTY_VERSION . ", created on " . strftime("%Y-%m-%d %H:%M:%S") . "\n";
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        $template_header .= "         compiled from \"" . $this->template->source->filepath . "\" */ ?>\n";
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        $code = '<?php Smarty_Internal_Extension_Config::loadConfigVars($_smarty_tpl, ' . var_export($this->config_data, true) . '); ?>';
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        return $template_header . Smarty_Internal_Extension_CodeFrame::create($this->template, $code);
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    }
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    /**
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     * display compiler error messages without dying
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     * If parameter $args is empty it is a parser detected syntax error.
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     * In this case the parser is called to obtain information about expected tokens.
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     * If parameter $args contains a string this is used as error message
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     *
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     * @param string $args individual error message or null
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     *
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     * @throws SmartyCompilerException
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     */
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    public function trigger_config_file_error($args = null) {
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        $this->lex = Smarty_Internal_Configfilelexer::instance();
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        $this->parser = Smarty_Internal_Configfileparser::instance();
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        // get config source line which has error
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        $line = $this->lex->line;
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        if (isset($args)) {
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            // $line--;
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        }
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        $match = preg_split("/\n/", $this->lex->data);
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        $error_text = "Syntax error in config file '{$this->template->source->filepath}' on line {$line} '{$match[$line - 1]}' ";
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        if (isset($args)) {
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            // individual error message
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            $error_text .= $args;
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        } else {
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            // expected token from parser
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            foreach ($this->parser->yy_get_expected_tokens($this->parser->yymajor) as $token) {
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                $exp_token = $this->parser->yyTokenName[$token];
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                if (isset($this->lex->smarty_token_names[$exp_token])) {
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                    // token type from lexer
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                    $expect[] = '"' . $this->lex->smarty_token_names[$exp_token] . '"';
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                } else {
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                    // otherwise internal token name
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                    $expect[] = $this->parser->yyTokenName[$token];
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                }
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            }
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            // output parser error message
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            $error_text .= ' - Unexpected "' . $this->lex->value . '", expected one of: ' . implode(' , ', $expect);
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        }
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        throw new SmartyCompilerException($error_text);
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    }
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}