Git pre-commit hook to run PHP Lint and PHP_CodeSniffer against Drupal project commits.

pre-commit

#!/usr/bin/php
<?php

/**
 * @file
 * Git pre-commit hook that runs PHP lint and PHPCS against commits.
 * DrupalCS requires PHPCS 1.x
 *
 * Install:
 *  1. Copy this file to /<my/git/project>/.git/hooks/pre-commit
 *  2. Make executable (chmod a+x pre-commit)
 */


$exit_code = 0;
$return = 0;
$files = array();
$phpcs = trim(shell_exec('which phpcs'));

// Get GIT revison.
exec('git rev-parse --verify HEAD 2> /dev/null', $files, $return);
$compare = ($return == 0) ? 'HEAD' : '';

// Build files array.
exec("git diff-index --cached --name-only {$compare}", $files);

print "\nExamine Files\n\n";

// Review the committed files.
foreach ($files as $file) {

  // File extensions to test.
  $file_extensions = array(
    'engine',
    'inc',
    'install',
    'engine',
    'module',
    'php',
    'profile',
    'test',
    'theme',
    'txt',
  );

  // Only check specified extensions
  $ext = pathinfo($file, PATHINFO_EXTENSION);
  if (!in_array($ext, $file_extensions)) {
    continue;
  }

  if (file_exists($file) && !is_dir($file)) {
    $file = escapeshellarg($file);

    echo "\n\033[1;31mExamining: {$file}\033[0m\n";
    $dir = str_replace('\'', '', dirname($file));
    $extra = '';
    if ($dir !== '.') {
      $extra = $dir . '/';
    }

    $output = array();

    // PHP code sniffer check.
    $return_phpcs = 0;
    $filename = str_replace('\'', '', basename($file));
    $file_extensions = implode($file_extensions, ',');
    $path = __DIR__ . '/../../' . $extra;
    $phpcs_cmd = "cd {$path} && {$phpcs} --standard=Drupal --extensions="
                 . "'{$file_extensions}' {$filename}";
    exec($phpcs_cmd, $output, $return_phpcs);

    // PHP lint check.
    $return_lint = 0;
    $lint_output = array();
    $lint_cmd = "php -l {$file}";
    exec($lint_cmd, $lint_output, $return_lint);

    if (($return_phpcs !== 0) || ($return_lint !== 0)) {
      echo implode("\n", $output), "\n";
      $exit_status = 1;
    }
  }
}

exit($exit_status);