<?php
/**
 * \DrupalPractice\Sniffs\FunctionCalls\TCheckPlainSniff
 *
 * @category PHP
 * @package  PHP_CodeSniffer
 * @link     http://pear.php.net/package/PHP_CodeSniffer
 */

namespace DrupalPractice\Sniffs\FunctionCalls;

use PHP_CodeSniffer\Files\File;
use Drupal\Sniffs\Semantics\FunctionCall;

/**
 * Check that "@" and "%" placeholders in t()/watchdog() are not escaped twice
 * with check_plain().
 *
 * @category PHP
 * @package  PHP_CodeSniffer
 * @link     http://pear.php.net/package/PHP_CodeSniffer
 */
class TCheckPlainSniff extends FunctionCall
{


    /**
     * Returns an array of function names this test wants to listen for.
     *
     * @return array
     */
    public function registerFunctionNames()
    {
        return array(
                't',
                'watchdog',
               );

    }//end registerFunctionNames()


    /**
     * Processes this function call.
     *
     * @param \PHP_CodeSniffer\Files\File $phpcsFile    The file being scanned.
     * @param int                         $stackPtr     The position of the function call in
     *                                                  the stack.
     * @param int                         $openBracket  The position of the opening
     *                                                  parenthesis in the stack.
     * @param int                         $closeBracket The position of the closing
     *                                                  parenthesis in the stack.
     *
     * @return void
     */
    public function processFunctionCall(
        File $phpcsFile,
        $stackPtr,
        $openBracket,
        $closeBracket
    ) {
        $tokens = $phpcsFile->getTokens();
        if ($tokens[$stackPtr]['content'] === 't') {
            $argument = $this->getArgument(2);
        } else {
            // For watchdog() the placeholders are in the third argument.
            $argument = $this->getArgument(3);
        }

        if ($argument === false) {
            return;
        }

        if ($tokens[$argument['start']]['code'] !== T_ARRAY) {
            return;
        }

        $checkPlain = $argument['start'];
        while (($checkPlain = $phpcsFile->findNext(T_STRING, ($checkPlain + 1), $tokens[$argument['start']]['parenthesis_closer'])) !== false) {
            if ($tokens[$checkPlain]['content'] === 'check_plain') {
                // The check_plain() could be embedded with string concatenation,
                // which we want to allow.
                $previous = $phpcsFile->findPrevious(T_WHITESPACE, ($checkPlain - 1), $argument['start'], true);
                if ($previous === false || $tokens[$previous]['code'] !== T_STRING_CONCAT) {
                    $warning = 'The extra check_plain() is not necessary for placeholders, "@" and "%" will automatically run check_plain()';
                    $phpcsFile->addWarning($warning, $checkPlain, 'CheckPlain');
                }
            }
        }

    }//end processFunctionCall()


}//end class
