Chris@0: <?php
Chris@0: /**
Chris@17:  * \Drupal\Sniffs\InfoFiles\DuplicateEntrySniff.
Chris@0:  *
Chris@0:  * @category PHP
Chris@0:  * @package  PHP_CodeSniffer
Chris@0:  * @link     http://pear.php.net/package/PHP_CodeSniffer
Chris@0:  */
Chris@0: 
Chris@17: namespace Drupal\Sniffs\InfoFiles;
Chris@17: 
Chris@17: use PHP_CodeSniffer\Files\File;
Chris@17: use PHP_CodeSniffer\Sniffs\Sniff;
Chris@17: 
Chris@0: /**
Chris@0:  * Make sure that entries in info files are specified only once.
Chris@0:  *
Chris@0:  * @category PHP
Chris@0:  * @package  PHP_CodeSniffer
Chris@0:  * @link     http://pear.php.net/package/PHP_CodeSniffer
Chris@0:  */
Chris@17: class DuplicateEntrySniff implements Sniff
Chris@0: {
Chris@0: 
Chris@0: 
Chris@0:     /**
Chris@0:      * Returns an array of tokens this test wants to listen for.
Chris@0:      *
Chris@0:      * @return array
Chris@0:      */
Chris@0:     public function register()
Chris@0:     {
Chris@0:         return array(T_INLINE_HTML);
Chris@0: 
Chris@0:     }//end register()
Chris@0: 
Chris@0: 
Chris@0:     /**
Chris@0:      * Processes this test, when one of its tokens is encountered.
Chris@0:      *
Chris@17:      * @param \PHP_CodeSniffer\Files\File $phpcsFile The file being scanned.
Chris@17:      * @param int                         $stackPtr  The position of the current token in the
Chris@17:      *                                               stack passed in $tokens.
Chris@0:      *
Chris@0:      * @return int
Chris@0:      */
Chris@17:     public function process(File $phpcsFile, $stackPtr)
Chris@0:     {
Chris@0:         // Only run this sniff once per info file.
Chris@0:         $fileExtension = strtolower(substr($phpcsFile->getFilename(), -4));
Chris@0:         if ($fileExtension !== 'info') {
Chris@0:             return ($phpcsFile->numTokens + 1);
Chris@0:         }
Chris@0: 
Chris@0:         $contents   = file_get_contents($phpcsFile->getFilename());
Chris@0:         $duplicates = $this->findDuplicateInfoFileEntries($contents);
Chris@0:         if (empty($duplicates) === false) {
Chris@0:             foreach ($duplicates as $duplicate) {
Chris@0:                 $error = 'Duplicate entry for "%s" in info file';
Chris@0:                 $phpcsFile->addError($error, $stackPtr, 'DuplicateEntry', array($duplicate));
Chris@0:             }
Chris@0:         }
Chris@0: 
Chris@0:         return ($phpcsFile->numTokens + 1);
Chris@0: 
Chris@0:     }//end process()
Chris@0: 
Chris@0: 
Chris@0:     /**
Chris@0:      * Parses a Drupal info file and checsk if a key apperas more than once.
Chris@0:      *
Chris@0:      * @param string $data The contents of the info file to parse
Chris@0:      *
Chris@0:      * @return array A list of configuration keys that appear more than once.
Chris@0:      */
Chris@0:     protected function findDuplicateInfoFileEntries($data)
Chris@0:     {
Chris@0:         $info       = array();
Chris@0:         $duplicates = array();
Chris@0:         $constants  = get_defined_constants();
Chris@0: 
Chris@0:         if (preg_match_all(
Chris@0:             '
Chris@0:           @^\s*                           # Start at the beginning of a line, ignoring leading whitespace
Chris@0:           ((?:
Chris@0:             [^=;\[\]]|                    # Key names cannot contain equal signs, semi-colons or square brackets,
Chris@0:             \[[^\[\]]*\]                  # unless they are balanced and not nested
Chris@0:           )+?)
Chris@0:           \s*=\s*                         # Key/value pairs are separated by equal signs (ignoring white-space)
Chris@0:           (?:
Chris@0:             ("(?:[^"]|(?<=\\\\)")*")|     # Double-quoted string, which may contain slash-escaped quotes/slashes
Chris@0:             (\'(?:[^\']|(?<=\\\\)\')*\')| # Single-quoted string, which may contain slash-escaped quotes/slashes
Chris@0:             ([^\r\n]*?)                   # Non-quoted string
Chris@0:           )\s*$                           # Stop at the next end of a line, ignoring trailing whitespace
Chris@0:           @msx',
Chris@0:             $data,
Chris@0:             $matches,
Chris@0:             PREG_SET_ORDER
Chris@0:         ) !== false
Chris@0:         ) {
Chris@0:             foreach ($matches as $match) {
Chris@0:                 // Fetch the key and value string.
Chris@0:                 $i = 0;
Chris@0:                 foreach (array('key', 'value1', 'value2', 'value3') as $var) {
Chris@0:                     if (isset($match[++$i]) === true) {
Chris@0:                         $$var = $match[$i];
Chris@0:                     } else {
Chris@0:                         $$var = '';
Chris@0:                     }
Chris@0:                 }
Chris@0: 
Chris@0:                 $value = stripslashes(substr($value1, 1, -1)).stripslashes(substr($value2, 1, -1)).$value3;
Chris@0: 
Chris@0:                 // Parse array syntax.
Chris@0:                 $keys   = preg_split('/\]?\[/', rtrim($key, ']'));
Chris@0:                 $last   = array_pop($keys);
Chris@0:                 $parent = &$info;
Chris@0: 
Chris@0:                 // Create nested arrays.
Chris@0:                 foreach ($keys as $key) {
Chris@0:                     if ($key === '') {
Chris@0:                         $key = count($parent);
Chris@0:                     }
Chris@0: 
Chris@0:                     if (isset($parent[$key]) === false || is_array($parent[$key]) === false) {
Chris@0:                         $parent[$key] = array();
Chris@0:                     }
Chris@0: 
Chris@0:                     $parent = &$parent[$key];
Chris@0:                 }
Chris@0: 
Chris@0:                 // Handle PHP constants.
Chris@0:                 if (isset($constants[$value]) === true) {
Chris@0:                     $value = $constants[$value];
Chris@0:                 }
Chris@0: 
Chris@0:                 // Insert actual value.
Chris@0:                 if ($last === '') {
Chris@0:                     $last = count($parent);
Chris@0:                 }
Chris@0: 
Chris@0:                 if (array_key_exists($last, $parent) === true) {
Chris@0:                     $duplicates[] = $last;
Chris@0:                 }
Chris@0: 
Chris@0:                 $parent[$last] = $value;
Chris@0:             }//end foreach
Chris@0:         }//end if
Chris@0: 
Chris@0:         return $duplicates;
Chris@0: 
Chris@0:     }//end findDuplicateInfoFileEntries()
Chris@0: 
Chris@0: 
Chris@0: }//end class