<?php
/**
 * Generic_Sniffs_Debug_ClosureLinterSniff.
 *
 * PHP version 5
 *
 * @category  PHP
 * @package   PHP_CodeSniffer
 * @author    Greg Sherwood <gsherwood@squiz.net>
 * @copyright 2006-2011 Squiz Pty Ltd (ABN 77 084 670 600)
 * @license   http://matrix.squiz.net/developer/tools/php_cs/licence BSD Licence
 * @link      http://pear.php.net/package/PHP_CodeSniffer
 */

/**
 * Generic_Sniffs_Debug_ClosureLinterSniff.
 *
 * Runs gjslint on the file.
 *
 * @category  PHP
 * @package   PHP_CodeSniffer
 * @author    Greg Sherwood <gsherwood@squiz.net>
 * @copyright 2006-2011 Squiz Pty Ltd (ABN 77 084 670 600)
 * @license   http://matrix.squiz.net/developer/tools/php_cs/licence BSD Licence
 * @version   Release: 1.3.3
 * @link      http://pear.php.net/package/PHP_CodeSniffer
 */
class Generic_Sniffs_Debug_ClosureLinterSniff implements PHP_CodeSniffer_Sniff
{

    /**
     * A list of error codes that should show errors.
     *
     * All other error codes will show warnings.
     *
     * @var int
     */
    public $errorCodes = array();

    /**
     * A list of error codes to ignore.
     *
     * @var int
     */
    public $ignoreCodes = array();

    /**
     * A list of tokenizers this sniff supports.
     *
     * @var array
     */
    public $supportedTokenizers = array('JS');


    /**
     * Returns the token types that this sniff is interested in.
     *
     * @return array(int)
     */
    public function register()
    {
        return array(T_OPEN_TAG);

    }//end register()


    /**
     * Processes the tokens that this sniff is interested in.
     *
     * @param PHP_CodeSniffer_File $phpcsFile The file where the token was found.
     * @param int                  $stackPtr  The position in the stack where
     *                                        the token was found.
     *
     * @return void
     * @throws PHP_CodeSniffer_Exception If jslint.js could not be run
     */
    public function process(PHP_CodeSniffer_File $phpcsFile, $stackPtr)
    {
        $fileName = $phpcsFile->getFilename();

        $lintPath = PHP_CodeSniffer::getConfigData('gjslint_path');
        if ($lintPath === null) {
            return;
        }

        $cmd = "$lintPath --nosummary --notime --unix_mode \"$fileName\"";
        $msg = exec($cmd, $output, $retval);

        if (is_array($output) === false) {
            return;
        }

        $tokens = $phpcsFile->getTokens();

        foreach ($output as $finding) {
            $matches    = array();
            $numMatches = preg_match('/^(.*):([0-9]+):\(([0-9]+)\)(.*)$/', $finding, $matches);
            if ($numMatches === 0) {
                continue;
            }

            // Skip error codes we are ignoring.
            $code = $matches[3];
            if (in_array($code, $this->ignoreCodes) === true) {
                continue;
            }

            $line  = (int) $matches[2];
            $error = trim($matches[4]);

            // Find the token at the start of the line.
            $lineToken = null;
            foreach ($tokens as $ptr => $info) {
                if ($info['line'] === $line) {
                    $lineToken = $ptr;
                    break;
                }
            }

            if ($lineToken !== null) {
                $message = 'gjslint says: (%s) %s';
                $data    = array(
                            $code,
                            $error,
                           );
                if (in_array($code, $this->errorCodes) === true) {
                    $phpcsFile->addError($message, $lineToken, 'ExternalToolError', $data);
                } else {
                    $phpcsFile->addWarning($message, $lineToken, 'ExternalTool', $data);
                }
            }
        }//end foreach

    }//end process()


}//end class

?>