Migrate from Symfony deps to git sumbodules

deps.php

<?php

function run($command) {
  echo $command."\n";
  $output = null;
  $return_var = null;
  exec($command, $ouput, $return_var);
  echo $output;
  if ($return_var != 0) {
    exit($return_var);
  }
}

$versions = array();
$lines = explode("\n", file_get_contents('deps.lock'));
foreach ($lines as $line) {
  list($project, $version) = explode(" ", $line);
  $versions[$project] = $version;
}

$projects = parse_ini_file('deps', true);
foreach ($projects as $project => $config) {
  if (!isset($config['git'])) {
    continue;
  }
  $git = $config['git'];

  if (isset($config['target'])) {
    $target = $config['target'];
  } else {
    $target = $project;
  }

  if ($target[0] == '/') {
    $target = substr($target, 1);
  }

  $target = "./vendor/$target";
  $version = $versions[$project];

  var_dump($target);
  var_dump(file_exists($target));
  var_dump($version);
  if (file_exists($target)) {
    chdir($target);
    run("git fetch");
    run("git checkout $version");
    chdir(__DIR__);
  } else {
    run("git submodule add $git $target");
    if (!isset($versions[$project])) {
      continue;
    }

    chdir($target);
    run("git checkout $version");
    chdir(__DIR__);
  }
}