Add ability to set worker file and cwd (Phar support)

[azurre]

Fix make able use reactphp-sqlite with phar applications + fix filename regexp (windows path support)

[azurre]

The problem:

• Make phar application with simple insert (from readme)
• Run php test.phar
• Get an error: PHP Fatal error: Uncaught RuntimeException: Unable to launch a new process: proc_open(): CreateProcess failed, error code - 267

Achieve wanted:

• Make able run phar application

Exapmle:

<?php
use Clue\React\SQLite\Factory;
(function() {
    // --- additional part for phar application ---
    $options = getopt('', ['sqlite::']);
    if (isset($options['sqlite'])) { // Run worker
        if (isset($_SERVER['argv'][2])) { // Handle Windows
            $_SERVER['argv'][1] = isset($_SERVER['argv'][2]) ? $_SERVER['argv'][2] : $_SERVER['argv'][1];
        } else {
            unset($_SERVER['argv'][1]); // Handle *nix
        }
        return include __DIR__ . '/vendor/clue/reactphp-sqlite/res/sqlite-worker.php';
    }
    $worker = $cwd = null;
    if (strpos(__DIR__, 'phar://') === 0) {
        $app = Phar::running(false);
        $worker = "{$app} --sqlite=1";
        $cwd = dirname($app);
    }
    // -------------------------------------------
    require_once __DIR__ . '/vendor/autoload.php';
    $loop = React\EventLoop\Factory::create();
    $factory = new Factory($loop, $worker, $cwd);
    $db = $factory->openLazy('users.db');
    $db->exec('CREATE TABLE IF NOT EXISTS foo (id INTEGER PRIMARY KEY AUTOINCREMENT, bar STRING)');
    $name = 'Alice';
    $db->query('INSERT INTO foo (bar) VALUES (?)', [$name])->then(
        function(Clue\React\SQLite\Result $result) use ($name) {
            echo 'New ID for ' . $name . ': ' . $result->insertId . PHP_EOL;
        }
    );
    $db->quit();
    $loop->run();
})();

As a result
$ php test.phar

New ID for Alice: 8

and

$ php test.php

New ID for Alice: 9

works as expected on windows & *nix

[clue]

@azurre Thanks for filing this PR! 👍

Unfortunately, the PR does not currently contain any documentation, examples or tests, so it's a bit unclear how this can be used.

May I ask you provide a simple gist of what you're trying to achieve and how this looks from a consumer perspective? Thanks!

[azurre]

Hi @clue

I've updated my previous comment

[clue]

@azurre Thanks for looking into this and filing a PR to address #5!

This definitely looks like an interesting starting point and I'm happy to see you've got this working! I think this PR boils down to having to include the worker script from within a PHP file itself rather than passing its path to the PHP executable.

I would still like to look into the option discussed in #5 to see if we can integrate this without requiring consumers of this library to take care of this path handling. It's my understanding we should be able to launch the worker script with PHP in a way that does not require modification of the consumer application.

As much as I'd like to commit to specific date, I can only say that we will get to this feature as soon as time permits. In the meantime, I think your changes LGTM and you can always keep using this approach from your private fork. 👍

[clue]

I'm closing this for now as it hasn't received any input in a while and I believe this is best addressed with #5 in a future version. If you feel this is still relevant, please come back with more details and we can always reopen this 👍

Thank you for your effort, keep it up! 👍