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   1  <?php
   2  
   3  final class DiffusionMergedCommitsQueryConduitAPIMethod
   4    extends DiffusionQueryConduitAPIMethod {
   5  
   6    public function getAPIMethodName() {
   7      return 'diffusion.mergedcommitsquery';
   8    }
   9  
  10    public function getMethodDescription() {
  11      return
  12        'Merged commit information for a specific commit in a repository.';
  13    }
  14  
  15    public function defineReturnType() {
  16      return 'array';
  17    }
  18  
  19    protected function defineCustomParamTypes() {
  20      return array(
  21        'commit' => 'required string',
  22        'limit' => 'optional int',
  23      );
  24    }
  25  
  26    private function getLimit(ConduitAPIRequest $request) {
  27      return $request->getValue('limit', PHP_INT_MAX);
  28    }
  29  
  30    protected function getGitResult(ConduitAPIRequest $request) {
  31      $drequest = $this->getDiffusionRequest();
  32      $repository = $drequest->getRepository();
  33      $commit = $request->getValue('commit');
  34      $limit = $this->getLimit($request);
  35  
  36      list($parents) = $repository->execxLocalCommand(
  37        'log -n 1 --format=%s %s',
  38        '%P',
  39        $commit);
  40  
  41      $parents = preg_split('/\s+/', trim($parents));
  42      if (count($parents) < 2) {
  43        // This is not a merge commit, so it doesn't merge anything.
  44        return array();
  45      }
  46  
  47      // Get all of the commits which are not reachable from the first parent.
  48      // These are the commits this change merges.
  49  
  50      $first_parent = head($parents);
  51      list($logs) = $repository->execxLocalCommand(
  52        'log -n %d --format=%s %s %s --',
  53        // NOTE: "+ 1" accounts for the merge commit itself.
  54        $limit + 1,
  55        '%H',
  56        $commit,
  57        '^'.$first_parent);
  58  
  59      $hashes = explode("\n", trim($logs));
  60  
  61      // Remove the merge commit.
  62      $hashes = array_diff($hashes, array($commit));
  63  
  64      return DiffusionQuery::loadHistoryForCommitIdentifiers(
  65        $hashes,
  66        $drequest);
  67     }
  68  
  69    protected function getMercurialResult(ConduitAPIRequest $request) {
  70      $drequest = $this->getDiffusionRequest();
  71      $repository = $drequest->getRepository();
  72      $commit = $request->getValue('commit');
  73      $limit = $this->getLimit($request);
  74  
  75      list($parents) = $repository->execxLocalCommand(
  76        'parents --template=%s --rev %s',
  77        '{node}\\n',
  78        $commit);
  79      $parents = explode("\n", trim($parents));
  80  
  81      if (count($parents) < 2) {
  82        // Not a merge commit.
  83        return array();
  84      }
  85  
  86      // NOTE: In Git, the first parent is the "mainline". In Mercurial, the
  87      // second parent is the "mainline" (the way 'git merge' and 'hg merge'
  88      // work is also reversed).
  89  
  90      $last_parent = last($parents);
  91      list($logs) = $repository->execxLocalCommand(
  92        'log --template=%s --follow --limit %d --rev %s:0 --prune %s --',
  93        '{node}\\n',
  94        $limit + 1,
  95        $commit,
  96        $last_parent);
  97  
  98      $hashes = explode("\n", trim($logs));
  99  
 100      // Remove the merge commit.
 101      $hashes = array_diff($hashes, array($commit));
 102  
 103      return DiffusionQuery::loadHistoryForCommitIdentifiers(
 104        $hashes,
 105        $drequest);
 106    }
 107  
 108  }