pre-commit

#!/usr/bin/env php
<?php
$js_pattern  = '/\.js$/';
$return      = 0;
$exit_status = 0;
$output      = array();
$matches     = array('js' => array());

// Get aganist git version
exec('git rev-parse --verify HEAD 2> /dev/null', $output, $return);
$against = ($return == 0) ? 'HEAD' : '4b825dc642cb6eb9a060e54bf8d69288fbee4904';

// Get diff index
$cmd = "git diff-index --cached --name-status $against";
exec($cmd, $output, $return);

// Check Code Standard Error
foreach ($output as $item) {
    $item = explode("\t", $item);
    // Don't deal with commit id
    if (count($item) !== 2) {
        continue;
    }
    // Don't deal with deleted files
    $file   = $item[1];
    $status = $item[0];
    if ($status === 'D') {
        continue;
    }
    // Find JavaScript files
    if (preg_match($js_pattern, $file)) {
        $matches["js"][] = escapeshellarg($file);
    }
}

// Check JavaScript files with JSHint
$return  = 0;
$message = array('jshint' => array());
if (count($matches['js'])) {
    foreach ($matches['js'] as $file) {
        // Correct file path.
        if (mb_substr($file, 0, 1) !== '/') {
            $file = getcwd() . '/' . $file;
        }
        $cmd = "jshint $file";
        exec($cmd, $output, $return);
        if ($return == 0) {
            continue;
        }
        array_shift($output);
        array_shift($output);
        array_shift($output);
        $message['jshint'][] = implode($output, "\n");
        $exit_status = 1;
    }
}

if ($exit_status == 1) {
    echo "\nCOMMIT FAILED!\n";
    if (count($message['jshint'])) {
        echo "============================================================\n";
        echo "JSHint Error report \n";
        echo "============================================================\n";
        echo implode($message['jshint']) . "\n";
        echo "============================================================\n\n";
        exit(1);
    }
}

exit($exit_status);

?>