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   1  <?php
   2  
   3  /**
   4   * Execute and parse a low-level Mercurial branches query using `hg branches`.
   5   */
   6  final class DiffusionLowLevelMercurialBranchesQuery
   7    extends DiffusionLowLevelQuery {
   8  
   9    private $contains;
  10  
  11    public function withContainsCommit($commit) {
  12      $this->contains = $commit;
  13      return $this;
  14    }
  15  
  16    protected function executeQuery() {
  17      $repository = $this->getRepository();
  18  
  19      if ($this->contains !== null) {
  20        $spec = hgsprintf('(descendants(%s) and head())', $this->contains);
  21      } else {
  22        $spec = hgsprintf('head()');
  23      }
  24  
  25      list($stdout) = $repository->execxLocalCommand(
  26        'log --template %s --rev %s',
  27        '{node}\1{branch}\2',
  28        $spec);
  29  
  30      $branches = array();
  31  
  32      $lines = explode("\2", $stdout);
  33      $lines = array_filter($lines);
  34      foreach ($lines as $line) {
  35        list($node, $branch) = explode("\1", $line);
  36        $branches[] = id(new DiffusionRepositoryRef())
  37          ->setShortName($branch)
  38          ->setCommitIdentifier($node);
  39      }
  40  
  41      return $branches;
  42    }
  43  
  44  }