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<?php |
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/** |
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* \PHPCompatibility\Sniffs\PHP\PregReplaceEModifierSniff. |
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* |
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* PHP version 5.5 |
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* |
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* @category PHP |
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* @package PHPCompatibility |
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* @author Wim Godden <[email protected]> |
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* @copyright 2014 Cu.be Solutions bvba |
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*/ |
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namespace PHPCompatibility\Sniffs\PHP; |
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use PHPCompatibility\Sniff; |
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/** |
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* \PHPCompatibility\Sniffs\PHP\PregReplaceEModifierSniff. |
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* |
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* Check for usage of the `e` modifier with PCRE functions which is deprecated since PHP 5.5 |
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* and removed as of PHP 7.0. |
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* |
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* PHP version 5.5 |
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* |
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* @category PHP |
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* @package PHPCompatibility |
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* @author Wim Godden <[email protected]> |
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* @copyright 2014 Cu.be Solutions bvba |
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*/ |
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class PregReplaceEModifierSniff extends Sniff |
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{ |
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/** |
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* Functions to check for. |
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* |
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* @var array |
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*/ |
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protected $functions = array( |
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'preg_replace' => true, |
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'preg_filter' => true, |
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); |
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/** |
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* Regex bracket delimiters. |
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* |
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* @var array |
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*/ |
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protected $doublesSeparators = array( |
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'{' => '}', |
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'[' => ']', |
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'(' => ')', |
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'<' => '>', |
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); |
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/** |
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* Returns an array of tokens this test wants to listen for. |
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* |
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* @return array |
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*/ |
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public function register() |
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{ |
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return array(T_STRING); |
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}//end register() |
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/** |
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* Processes this test, when one of its tokens is encountered. |
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* |
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* @param \PHP_CodeSniffer_File $phpcsFile The file being scanned. |
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* @param int $stackPtr The position of the current token in the |
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* stack passed in $tokens. |
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* |
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* @return void |
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*/ |
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public function process(\PHP_CodeSniffer_File $phpcsFile, $stackPtr) |
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{ |
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if ($this->supportsAbove('5.5') === false) { |
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return; |
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} |
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$tokens = $phpcsFile->getTokens(); |
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$functionName = $tokens[$stackPtr]['content']; |
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$functionNameLc = strtolower($functionName); |
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// Bow out if not one of the functions we're targetting. |
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if (isset($this->functions[$functionNameLc]) === false) { |
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return; |
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} |
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// Get the first parameter in the function call as that should contain the regex(es). |
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$firstParam = $this->getFunctionCallParameter($phpcsFile, $stackPtr, 1); |
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if ($firstParam === false) { |
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return; |
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} |
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// Differentiate between an array of patterns passed and a single pattern. |
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$nextNonEmpty = $phpcsFile->findNext(\PHP_CodeSniffer_Tokens::$emptyTokens, $firstParam['start'], ($firstParam['end'] +1), true); |
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if ($nextNonEmpty !== false && ($tokens[$nextNonEmpty]['code'] === T_ARRAY || $tokens[$nextNonEmpty]['code'] === T_OPEN_SHORT_ARRAY)) { |
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$arrayValues = $this->getFunctionCallParameters($phpcsFile, $nextNonEmpty); |
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foreach ($arrayValues as $value) { |
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$hasKey = $phpcsFile->findNext(T_DOUBLE_ARROW, $value['start'], ($value['end'] + 1)); |
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if ($hasKey !== false) { |
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$value['start'] = ($hasKey + 1); |
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$value['raw'] = trim($phpcsFile->getTokensAsString($value['start'], (($value['end'] + 1) - $value['start']))); |
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} |
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$this->processRegexPattern($value, $phpcsFile, $value['end'], $functionName); |
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} |
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} else { |
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$this->processRegexPattern($firstParam, $phpcsFile, $stackPtr, $functionName); |
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} |
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}//end process() |
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/** |
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* Analyse a potential regex pattern for usage of the /e modifier. |
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* |
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* @param array $pattern Array containing the start and end token |
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* pointer of the potential regex pattern and |
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* the raw string value of the pattern. |
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* @param \PHP_CodeSniffer_File $phpcsFile The file being scanned. |
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* @param int $stackPtr The position of the current token in the |
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* stack passed in $tokens. |
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* @param string $functionName The function which contained the pattern. |
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* |
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* @return void |
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*/ |
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protected function processRegexPattern($pattern, \PHP_CodeSniffer_File $phpcsFile, $stackPtr, $functionName) |
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{ |
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$tokens = $phpcsFile->getTokens(); |
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/* |
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* The pattern might be build up of a combination of strings, variables |
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* and function calls. We are only concerned with the strings. |
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*/ |
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$regex = ''; |
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for ($i = $pattern['start']; $i <= $pattern['end']; $i++) { |
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if (in_array($tokens[$i]['code'], \PHP_CodeSniffer_Tokens::$stringTokens, true) === true) { |
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$content = $this->stripQuotes($tokens[$i]['content']); |
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if ($tokens[$i]['code'] === T_DOUBLE_QUOTED_STRING) { |
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$content = $this->stripVariables($content); |
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} |
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$regex .= trim($content); |
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} |
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} |
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// Deal with multi-line regexes which were broken up in several string tokens. |
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if ($tokens[$pattern['start']]['line'] !== $tokens[$pattern['end']]['line']) { |
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$regex = $this->stripQuotes($regex); |
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} |
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if ($regex === '') { |
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// No string token found in the first parameter, so skip it (e.g. if variable passed in). |
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return; |
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} |
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$regexFirstChar = substr($regex, 0, 1); |
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// Make sure that the character identified as the delimiter is valid. |
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// Otherwise, it is a false positive caused by the string concatenation. |
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if (preg_match('`[a-z0-9\\\\ ]`i', $regexFirstChar) === 1) { |
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return; |
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} |
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if (isset($this->doublesSeparators[$regexFirstChar])) { |
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$regexEndPos = strrpos($regex, $this->doublesSeparators[$regexFirstChar]); |
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} else { |
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$regexEndPos = strrpos($regex, $regexFirstChar); |
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} |
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if ($regexEndPos !== false) { |
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$modifiers = substr($regex, $regexEndPos + 1); |
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if (strpos($modifiers, 'e') !== false) { |
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$error = '%s() - /e modifier is deprecated since PHP 5.5'; |
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$isError = false; |
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$errorCode = 'Deprecated'; |
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$data = array($functionName); |
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if ($this->supportsAbove('7.0')) { |
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$error .= ' and removed since PHP 7.0'; |
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$isError = true; |
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$errorCode = 'Removed'; |
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} |
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$this->addMessage($phpcsFile, $error, $stackPtr, $isError, $errorCode, $data); |
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} |
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} |
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}//end processRegexPattern() |
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}//end class |
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wimg /
PHPCompatibility
