Fix CKEditor 4 line endings

fix-ckeditor-eol.php

#!/usr/bin/env php
<?php

const FIX_EOL = true;
const FIX_BOM = true;

set_error_handler(
    static function ($errno, $errmsg, $errfile, $errline)
    {
        throw new RuntimeException("Error {$errno}: {$errmsg}\nFile: {$errfile}\nLine: {$errline}");
    },
    -1
);

const UTF8_BOM = "\xEF\xBB\xBF";

function isCKEditorDir($dir)
{
    return is_file("{$dir}/ckeditor.js") && is_dir("{$dir}/adapters") && is_dir("{$dir}/plugins") && is_dir("{$dir}/skins");
}

function getCKEditorDir($arg)
{
    $dir = realpath($arg);
    if ($dir === false || !is_dir($dir)) {
        throw new RuntimeException("Directory not found: {$arg}");
    }
    $dir = rtrim(str_replace(DIRECTORY_SEPARATOR, '/', $dir), '/');
    $paths = ['concrete', 'js', 'ckeditor4', 'vendor'];
    for ($numPaths = 0; $numPaths <= count($paths); $numPaths++) {
        $tmp = $dir;
        if ($numPaths > 0) {
            $tmp .= '/' . implode('/', array_slice($paths, -$numPaths));
        }
        if (isCKEditorDir($tmp)) {
            return $tmp;
        }
    }
    throw new RuntimeException('Failed to find the CKEditor directory under ' . str_replace('/', DIRECTORY_SEPARATOR, $dir));
}

function listFiles($ckDir)
{
    $iterator = new RecursiveIteratorIterator(
        new RecursiveDirectoryIterator(
            $ckDir,
            FilesystemIterator::CURRENT_AS_FILEINFO | FilesystemIterator::SKIP_DOTS | FilesystemIterator::UNIX_PATHS
        )
    );
    foreach ($iterator as $file) {
        if ($file->isFile()) {
            switch (strtolower($file->getExtension())) {
                case 'css':
                case 'html':
                case 'js':
                case 'json':
                case 'md':
                case 'php':
                case 'txt':
                    yield $file->getPathname();
                    break;
                case 'gif':
                case 'jpg':
                case 'fla':
                case 'eot':
                case 'png':
                case 'ttf':
                case 'svg':
                case 'swf':
                case 'woff':
                    break;
                case '':
                    switch ($file->getFilename()) {
                        case 'LICENSE':
                            yield $file->getPathname();
                            break;
                        default:
                            throw new RuntimeException('Unrecognized file: ' . str_replace('/', DIRECTORY_SEPARATOR, $file->getPathname()));
                    }
                    break;
                default:
                    throw new RuntimeException("Unrecognized extension '{$file->getExtension()}' for file " . str_replace('/', DIRECTORY_SEPARATOR, $file->getPathname()));
            }
        }
    }
}

function fixLineEndings($ckFile)
{
    $originalContents = file_get_contents($ckFile);
    if ($originalContents === false) {
        throw new RuntimeException('Failed to read file ' . str_replace('/', DIRECTORY_SEPARATOR, $ckFile));
    }
    $fixedContents = $originalContents;
    if (FIX_EOL) {
        $fixedContents = str_replace("\r", "\n", str_replace("\r\n", "\n", $originalContents));
    }
    if (FIX_BOM && substr($fixedContents, 0, strlen(UTF8_BOM)) === UTF8_BOM) {
        $fixedContents = substr($fixedContents, strlen(UTF8_BOM));
    }
    if ($fixedContents === $originalContents) {
        return false;
    }
    if (file_put_contents($ckFile, $fixedContents) === false) {
        throw new RuntimeException('Failed to write file ' . str_replace('/', DIRECTORY_SEPARATOR, $ckFile));
    }

    return true;
}

try {
    if (empty($argv) || count($argv) !== 2) {
        throw new RuntimeException('Please specify the path to the concrete5 root folder.');
    }
    $ckDir = getCKEditorDir($argv[1]);
    $totalFiles = 0;
    $fixedFiles = 0;
    foreach (listFiles($ckDir) as $ckFile) {
        $totalFiles++;
        if (fixLineEndings($ckFile) === true) {
            $fixedFiles++;
        }
    }
    echo "{$fixedFiles} files fixed out of {$totalFiles} in ", str_replace('/', DIRECTORY_SEPARATOR, $ckDir), "\n";
} catch (RuntimeException $x) {
    fwrite(STDERR, $x->getMessage() . "\n");
    exit(1);
}