FHC-Core/tests/codesniffer/FHComplete/Sniffs/WhiteSpace/TabAndSpaceSniff.php

<?php
/**
 * PHP Version 5
 *
 * FHComplete
 */

/**
 * Check for any line starting with 2 spaces - which would indicate space indenting
 * Also check for "\t " - a tab followed by a space, which is a common similar mistake
 *
 */
class FHComplete_Sniffs_WhiteSpace_TabAndSpaceSniff 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_WHITESPACE);
    }

/**
 * Processes this test, 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();

        $line = $tokens[$stackPtr]['line'];
        if ($stackPtr > 0 && $tokens[($stackPtr - 1)]['line'] !== $line) {
            return;
        }

        if (strpos($tokens[$stackPtr]['content'], " \t") !== false) {
            $error = 'Space and tab found';
            $phpcsFile->addError($error, $stackPtr);
        }
        if (strpos($tokens[$stackPtr]['content'], "\t ") !== false) {
            $error = 'Tab and space found';
            $phpcsFile->addError($error, $stackPtr);
        }
    }
}