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<?php
/**
* Squiz_Sniffs_WhiteSpace_SuperfluousWhitespaceSniff.
*
* PHP version 5
*
* @category PHP
* @package PHP_CodeSniffer
* @author Greg Sherwood <gsherwood@squiz.net>
* @author Marc McIntyre <mmcintyre@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
*/
/**
* Squiz_Sniffs_WhiteSpace_SuperfluousWhitespaceSniff.
*
* Checks that no whitespace proceeds the first content of the file, exists
* after the last content of the file, resides after content on any line, or
* are two empty lines in functions.
*
* @category PHP
* @package PHP_CodeSniffer
* @author Greg Sherwood <gsherwood@squiz.net>
* @author Marc McIntyre <mmcintyre@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 Squiz_Sniffs_WhiteSpace_SuperfluousWhitespaceSniff implements PHP_CodeSniffer_Sniff
{
/**
* A list of tokenizers this sniff supports.
*
* @var array
*/
public $supportedTokenizers = array(
'PHP',
'JS',
'CSS',
);
/**
* Returns an array of tokens this test wants to listen for.
*
* @return array
*/
public function register()
{
return array(
T_OPEN_TAG,
T_CLOSE_TAG,
T_WHITESPACE,
T_COMMENT,
);
}//end register()
/**
* Processes this sniff, when one of its tokens is encountered.
*
* @param PHP_CodeSniffer_File $phpcsFile The file being scanned.
* @param int $stackPtr The position of the current token in the
* stack passed in $tokens.
*
* @return void
*/
public function process(PHP_CodeSniffer_File $phpcsFile, $stackPtr)
{
$tokens = $phpcsFile->getTokens();
if ($tokens[$stackPtr]['code'] === T_OPEN_TAG) {
/*
Check for start of file whitespace.
*/
if ($phpcsFile->tokenizerType !== 'PHP') {
// The first token is always the open tag inserted when tokenizsed
// and the second token is always the first piece of content in
// the file. If the second token is whitespace, there was
// whitespace at the start of the file.
if ($tokens[($stackPtr + 1)]['code'] !== T_WHITESPACE) {
return;
}
} else {
// If its the first token, then there is no space.
if ($stackPtr === 0) {
return;
}
for ($i = ($stackPtr - 1); $i >= 0; $i--) {
// If we find something that isn't inline html then there is something previous in the file.
if ($tokens[$i]['type'] !== 'T_INLINE_HTML') {
return;
}
// If we have ended up with inline html make sure it isn't just whitespace.
$tokenContent = trim($tokens[$i]['content']);
if ($tokenContent !== '') {
return;
}
}
}//end if
$phpcsFile->addError('Additional whitespace found at start of file', $stackPtr, 'StartFile');
} else if ($tokens[$stackPtr]['code'] === T_CLOSE_TAG) {
/*
Check for end of file whitespace.
*/
if ($phpcsFile->tokenizerType === 'JS') {
// The last token is always the close tag inserted when tokenizsed
// and the second last token is always the last piece of content in
// the file. If the second last token is whitespace, there was
// whitespace at the end of the file.
if ($tokens[($stackPtr - 1)]['code'] !== T_WHITESPACE) {
return;
}
} else if ($phpcsFile->tokenizerType === 'CSS') {
// The last two tokens are always the close tag and whitespace
// inserted when tokenizsed and the third last token is always the
// last piece of content in the file. If the third last token is
// whitespace, there was whitespace at the end of the file.
if ($tokens[($stackPtr - 3)]['code'] !== T_WHITESPACE) {
return;
}
// Adjust the pointer to give the correct line number for the error.
$stackPtr -= 2;
} else {
if (isset($tokens[($stackPtr + 1)]) === false) {
// The close PHP token is the last in the file.
return;
}
for ($i = ($stackPtr + 1); $i < $phpcsFile->numTokens; $i++) {
// If we find something that isn't inline html then there
// is more to the file.
if ($tokens[$i]['type'] !== 'T_INLINE_HTML') {
return;
}
// If we have ended up with inline html make sure it
// isn't just whitespace.
$tokenContent = trim($tokens[$i]['content']);
if (empty($tokenContent) === false) {
return;
}
}
}
$phpcsFile->addError('Additional whitespace found at end of file', $stackPtr, 'EndFile');
} else {
/*
Check for end of line whitespace.
*/
if (strpos($tokens[$stackPtr]['content'], $phpcsFile->eolChar) === false) {
return;
}
$tokenContent = rtrim($tokens[$stackPtr]['content'], $phpcsFile->eolChar);
if (empty($tokenContent) === false) {
if (preg_match('|^.*\s+$|', $tokenContent) !== 0) {
$phpcsFile->addError('Whitespace found at end of line', $stackPtr, 'EndLine');
}
}
/*
Check for multiple blanks lines in a function.
*/
if ($phpcsFile->hasCondition($stackPtr, T_FUNCTION) === true) {
if ($tokens[($stackPtr - 1)]['line'] < $tokens[$stackPtr]['line'] && $tokens[($stackPtr - 2)]['line'] === $tokens[($stackPtr - 1)]['line']) {
// This is an empty line and the line before this one is not
// empty, so this could be the start of a multiple empty
// line block.
$next = $phpcsFile->findNext(T_WHITESPACE, $stackPtr, null, true);
$lines = $tokens[$next]['line'] - $tokens[$stackPtr]['line'];
if ($lines > 1) {
$error = 'Functions must not contain multiple empty lines in a row; found %s empty lines';
$data = array($lines);
$phpcsFile->addError($error, $stackPtr, 'EmptyLines', $data);
}
}
}
}//end if
}//end process()
}//end class
?>
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