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[Arcanist] mercurial base commit DSL support

Summary:
This adds Mercurial support to the base commit DSL that's equivalent
to git's, though not identical.  Specifically, Mercurial has
arc:outgoing instead of arc:upstream, and hg:gca(commit) instead of
git:merge-base(commit), though they have similar behaviors.

Test Plan:
  [13:37:13 Thu Jun 21 2012] dschleimer@dev4022.snc6 ~/hg-dummy
  hg-dummy  20536 $ hg log -G -r master::
  @  changeset:   11:6970e9263ab8
  |  bookmark:    something
  |  tag:         tip
  |  user:        David Schleimer <dschleimer@fb.com>
  |  date:        Thu Jun 21 13:03:46 2012 -0700
  |  summary:     thing
  |
  o  changeset:   10:433a93023f03
  |  parent:      8:f47ccfe34267
  |  user:        David Schleimer <dschleimer@fb.com>
  |  date:        Thu Jun 21 13:03:34 2012 -0700
  |  summary:     some
  |
  | o  changeset:   9:c8379ef32b0d
  |/   bookmark:    other
  |    user:        David Schleimer <dschleimer@fb.com>
  |    date:        Thu Jun 21 13:01:04 2012 -0700
  |    summary:     other
  |
  o  changeset:   8:f47ccfe34267
  |  bookmark:    master
  |  user:        David Schleimer <dschleimer@fb.com>
  |  date:        Mon Jun 04 14:30:47 2012 -0700
  |  summary:     typo-fix
  |

  [13:38:00 Thu Jun 21 2012] dschleimer@dev4022.snc6 ~/hg-dummy
  hg-dummy  20536 $ ~/devtools/arcanist/bin/arc which --show-base --base hg:.^
  .^

  [13:38:11 Thu Jun 21 2012] dschleimer@dev4022.snc6 ~/hg-dummy
  hg-dummy  20536 $ ~/devtools/arcanist/bin/arc which --show-base --base 'hg:gca(other)'
  f47ccfe34267592dd2e336174a3a311b8783c024

  [13:38:21 Thu Jun 21 2012] dschleimer@dev4022.snc6 ~/hg-dummy
  hg-dummy  20536 $ hg id -r f47ccfe34267592dd2e336174a3a311b8783c024
  f47ccfe34267 master

  [13:38:31 Thu Jun 21 2012] dschleimer@dev4022.snc6 ~/hg-dummy
  hg-dummy  20537 $ ~/devtools/arcanist/bin/arc which --show-base --base 'arc:empty'
  null

  [13:38:44 Thu Jun 21 2012] dschleimer@dev4022.snc6 ~/hg-dummy
  hg-dummy  20538 $ hg id -r null
  000000000000

  [13:38:48 Thu Jun 21 2012] dschleimer@dev4022.snc6 ~/hg-dummy
  hg-dummy  20538 $ ~/devtools/arcanist/bin/arc which --show-base --base 'arc:outgoing'
  f47ccfe34267592dd2e336174a3a311b8783c024

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Maniphest Tasks: T1233

Differential Revision: https://secure.phabricator.com/D2822
This commit is contained in:
dschleimer 2012-06-21 18:12:09 -07:00
parent a9dbb937e8
commit 7f640b9db9

View file

@ -99,6 +99,20 @@ final class ArcanistMercurialAPI extends ArcanistRepositoryAPI {
public function getRelativeCommit() {
if (empty($this->relativeCommit)) {
if ($this->getBaseCommitArgumentRules() ||
$this->getWorkingCopyIdentity->getConfigFromAnySource('base')) {
$base = $this->resolveBaseCommit();
if (!$base) {
throw new ArcanistUsageException(
"None of the rules in your 'base' configuration matched a valid ".
"commit. Adjust rules or specify which commit you want to use ".
"explicitly.");
}
$this->relativeCommit = $base;
return $this->relativeCommit;
}
list($err, $stdout) = $this->execManualLocal(
'outgoing --branch `hg branch` --style default');
@ -608,4 +622,62 @@ final class ArcanistMercurialAPI extends ArcanistRepositoryAPI {
return trim($summary);
}
public function resolveBaseCommitRule($rule, $source) {
list($type, $name) = explode(':', $rule, 2);
switch ($type) {
case 'hg':
$matches = null;
if (preg_match('/^gca\((.+)\)$/', $name, $matches)) {
list($err, $merge_base) = $this->execManualLocal(
'log --template={node} --rev %s',
sprintf('ancestor(., %s)', $matches[1]));
if (!$err) {
$this->setBaseCommitExplanation(
"it is the greatest common ancestor of '{$matches[1]}' and ., as".
"specified by '{$rule}' in your {$source} 'base' ".
"configuration.");
return trim($merge_base);
}
} else {
list($err) = $this->execManualLocal(
'id -r %s',
$name);
if (!$err) {
$this->setBaseCommitExplanation(
"it is specified by '{$rule}' in your {$source} 'base' ".
"configuration.");
return $name;
}
}
break;
case 'arc':
switch ($name) {
case 'empty':
$this->setBaseCommitExplanation(
"you specified '{$rule}' in your {$source} 'base' ".
"configuration.");
return 'null';
case 'outgoing':
list($err, $outgoing_base) = $this->execManualLocal(
'log --template={node} --rev %s',
'limit(reverse(ancestors(.) - outgoing()), 1)'
);
if (!$err) {
$this->setBaseCommitExplanation(
"it is the first ancestor of the working copy that is not ".
"outgoing, and it matched the rule {$rule} in your {$source} ".
"'base' configuration.");
return trim($outgoing_base);
}
}
break;
default:
return null;
}
return null;
}
}