src/applications/diffusion/query/lowlevel/DiffusionLowLevelParentsQuery.php

   1 <?php
   2
   3 final class DiffusionLowLevelParentsQuery
   4   extends DiffusionLowLevelQuery {
   5
   6   private $identifier;
   7
   8   public function withIdentifier($identifier) {
   9     $this->identifier = $identifier;
  10     return $this;
  11   }
  12
  13   protected function executeQuery() {
  14     if (!strlen($this->identifier)) {
  15       throw new PhutilInvalidStateException('withIdentifier');
  16     }
  17
  18     $type = $this->getRepository()->getVersionControlSystem();
  19     switch ($type) {
  20       case PhabricatorRepositoryType::REPOSITORY_TYPE_GIT:
  21         $result = $this->loadGitParents();
  22         break;
  23       case PhabricatorRepositoryType::REPOSITORY_TYPE_MERCURIAL:
  24         $result = $this->loadMercurialParents();
  25         break;
  26       case PhabricatorRepositoryType::REPOSITORY_TYPE_SVN:
  27         $result = $this->loadSubversionParents();
  28         break;
  29       default:
  30         throw new Exception(pht('Unsupported repository type "%s"!', $type));
  31     }
  32
  33     return $result;
  34   }
  35
  36   private function loadGitParents() {
  37     $repository = $this->getRepository();
  38
  39     list($stdout) = $repository->execxLocalCommand(
  40       'log -n 1 %s %s --',
  41       '--format=%P',
  42       gitsprintf('%s', $this->identifier));
  43
  44     return preg_split('/\s+/', trim($stdout));
  45   }
  46
  47   private function loadMercurialParents() {
  48     $repository = $this->getRepository();
  49
  50     $hg_analyzer = PhutilBinaryAnalyzer::getForBinary('hg');
  51     if ($hg_analyzer->isMercurialTemplatePnodeAvailable()) {
  52       $hg_log_template = '{p1.node} {p2.node}';
  53     } else {
  54       $hg_log_template = '{p1node} {p2node}';
  55     }
  56
  57     list($stdout) = $repository->execxLocalCommand(
  58       'log --limit 1 --template %s --rev %s',
  59       $hg_log_template,
  60       $this->identifier);
  61
  62     $hashes = preg_split('/\s+/', trim($stdout));
  63     foreach ($hashes as $key => $value) {
  64       // We get 40-character hashes but also get the "000000..." hash for
  65       // missing parents; ignore it.
  66       if (preg_match('/^0+\z/', $value)) {
  67         unset($hashes[$key]);
  68       }
  69     }
  70
  71     return $hashes;
  72   }
  73
  74   private function loadSubversionParents() {
  75     $repository = $this->getRepository();
  76     $identifier = $this->identifier;
  77
  78     $refs = id(new DiffusionCachedResolveRefsQuery())
  79       ->setRepository($repository)
  80       ->withRefs(array($identifier))
  81       ->execute();
  82     if (!$refs) {
  83       throw new Exception(
  84         pht(
  85           'No commit "%s" in this repository.',
  86           $identifier));
  87     }
  88
  89     $n = (int)$identifier;
  90     if ($n > 1) {
  91       $ids = array($n - 1);
  92     } else {
  93       $ids = array();
  94     }
  95
  96     return $ids;
  97   }
  98
  99 }