phorge-arcanist/src/workflow/ArcanistUpgradeWorkflow.php

<?php

/*
 * Copyright 2012 Facebook, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * Upgrade arcanist itself.
 *
 * @group workflow
 */
final class ArcanistUpgradeWorkflow extends ArcanistBaseWorkflow {

  public function getCommandSynopses() {
    return phutil_console_format(<<<EOTEXT
      **upgrade**
EOTEXT
      );
  }

  public function getCommandHelp() {
    return phutil_console_format(<<<EOTEXT
          Supports: cli
          Upgrade arcanist and libphutil to the latest versions.
EOTEXT
      );
  }

  public function getArguments() {
    return array();
  }

  public function run() {
    $roots = array();
    $roots['libphutil'] = dirname(phutil_get_library_root('phutil'));
    $roots['arcanist'] = dirname(phutil_get_library_root('arcanist'));

    foreach ($roots as $lib => $root) {
      echo "Upgrading {$lib}...\n";

      if (!Filesystem::pathExists($root.'/.git')) {
        throw new ArcanistUsageException(
          "{$lib} must be in its git working copy to be automatically ".
          "upgraded. This copy of {$lib} (in '{$root}') is not in a git ".
          "working copy.");
      }

      $working_copy = ArcanistWorkingCopyIdentity::newFromPath($root);

      $repository_api = ArcanistRepositoryAPI::newAPIFromWorkingCopyIdentity(
        $working_copy);

      // Force the range to HEAD^..HEAD, which is meaningless but keeps us
      // from triggering "base" rules or other commit range resolution rules
      // that might prompt the user when we pull the working copy status.
      $repository_api->setRelativeCommit('HEAD^');
      $this->setRepositoryAPI($repository_api);

      // Require no local changes.
      $this->requireCleanWorkingCopy();

      // Require the library be on master.
      $branch_name = $repository_api->getBranchName();
      if ($branch_name != 'master') {
        throw new ArcanistUsageException(
          "{$lib} must be on branch 'master' to be automatically upgraded. ".
          "This copy of {$lib} (in '{$root}') is on branch '{$branch_name}'.");
      }

      chdir($root);
      try {
        phutil_passthru('git pull --rebase');
      } catch (Exception $ex) {
        phutil_passthru('git rebase --abort');
        throw $ex;
      }
    }

    echo phutil_console_wrap(
      phutil_console_format(
        "**Updated!** Your copy of arc is now up to date.\n"));

    return 0;
  }

}