Extract classes into their own files.

extract.php

<?php

if ($argc < 3) {
    echo "Usage: php extract.php src dest\n";
    exit;
}

$src = $argv[1];
$dest = $argv[2];

$it = new RegexIterator(new RecursiveIteratorIterator(new RecursiveDirectoryIterator($src)), '#\.php$#');

foreach ($it as $file) {
    $contents = file_get_contents($file);
    $tokens = new ArrayIterator(token_get_all($contents));

    $abstract = $final = false;

    foreach ($tokens as $token) {
        if (is_array($token)) {
            list($type, $data) = $token;

            if (is_token_type($token, T_ABSTRACT)) {
                $abstract = true;
            }

            if (is_token_type($token, T_FINAL)) {
                $final = true;
            }

            switch ($type) {
                case T_CLASS:
                case T_INTERFACE:
                    $nesting = 0;

                    if ($abstract) {
                        $data = "abstract $data";
                    }

                    if ($final) {
                        $data = "final $data";
                    }

                    do {
                        $tokens->next();
                        $name = get_token_data($tokens->current());
                        $data .= $name;
                    } while (preg_match('#\s#', $name));

                    $tokens->next();
                    while ($tokens->current()) {
                        $token = $tokens->current();

                        $data .= get_token_data($token);

                        if ('{' === get_token_data($token)) {
                            $nesting++;
                        }

                        if ('}' === get_token_data($token)) {
                            $nesting--;

                            if (0 === $nesting) {
                                break;
                            }
                        }

                        $tokens->next();
                    }

                    $filename = $dest.'/'.str_replace('_', '/', $name).'.php';
                    if (!is_dir(dirname($filename))) {
                        mkdir(dirname($filename), 0755, true);
                    }
                    file_put_contents($filename, "<?php\n\n".$data."\n");

                    $abstract = $final = false;

                    break;
            }
        }
    }
}

function is_token_type($token, $type)
{
    return is_array($token) && $type === $token[0];
}

function get_token_data($token)
{
    return is_array($token) ? $token[1] : $token;
}

nice little php script, neat. So this is to use with gists or files where all is clamped into a single file.

Yeah, in my case it was a library with multiple classes per file. So I ran this script to extract the classes (and become PSR-0 compat), then ran the CS fixer for PSR-1 and 2.

Thank you 👍