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Support --nobranch when not currently on a branch

Summary:
This is horrible and git specific, but fixes a case where people are using "arc
patch --nobranch ..." when they're not currently on a branch.

The old code assumed you were on a branch and used getBranchName() to record
this, in order to return to that branch later and cherry-pick the patch.

When not on a branch, and using arc patch --nobranch, this was trying to return
to the branch '(no branch)'.

Now, I detect that we're not on a branch and just record what HEAD is instead.

Test Plan:
Checkout the SHA of master (so I'm on master, but not on a branch) then try to
patch it with a feature diff:

  € git checkout e7a3ec68159d6847372cab5ad913f2f15aa7c249
  Warning: you are leaving 1 commit behind, not connected to
  any of your branches:

    ac1ad39 Updating a-file

  If you want to keep them by creating a new branch, this may be a good time
  to do so with:

   git branch new_branch_name ac1ad392350a51edd10343f12b9713f5e5b3707c

  HEAD is now at e7a3ec6... Fix arcconfig

  € arc patch --nobranch D7
  Created and checked out branch arcpatch-D7.
   OKAY  Successfully committed patch.

  € git branch
  * (no branch)
    feature
    haddock
    master

  € git log --oneline | head -2
  38c0235 Updating a-file
  e7a3ec6 Fix arcconfig

Reviewers: vrana, epriestley

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D3743
This commit is contained in:
Edward Speyer 2012-10-19 12:12:57 -07:00
parent 4585ab7363
commit f0c0245957
2 changed files with 14 additions and 3 deletions

View file

@ -338,8 +338,10 @@ final class ArcanistGitAPI extends ArcanistRepositoryAPI {
// But that may fail if you're not on a branch.
list($stdout) = $this->execxLocal('branch --no-color');
// Assume that any branch beginning with '(' means 'no branch', or whatever
// 'no branch' is in the current locale.
$matches = null;
if (preg_match('/^\* (.+)$/m', $stdout, $matches)) {
if (preg_match('/^\* ([^\(].*)$/m', $stdout, $matches)) {
return $matches[1];
}
return null;

View file

@ -471,8 +471,16 @@ EOTEXT
$repository_api = $this->getRepositoryAPI();
$has_base_revision = $this->hasBaseRevision($bundle);
if ($this->canBranch() && ($this->shouldBranch() || $has_base_revision)) {
if ($this->shouldCommit() &&
$this->canBranch() &&
($this->shouldBranch() || $has_base_revision)) {
$original_branch = $repository_api->getBranchName();
// If we weren't on a branch, then record the ref we'll return to
// instead.
if ($original_branch === null) {
$original_branch = $repository_api->getCanonicalRevisionName('HEAD');
}
$new_branch = $this->createBranch($bundle, $has_base_revision);
}
@ -724,7 +732,8 @@ EOTEXT
$verb = 'applied';
}
if ($this->canBranch() && !$this->shouldBranch() && $has_base_revision) {
if ($this->shouldCommit() && $this->canBranch() &&
!$this->shouldBranch() && $has_base_revision) {
$repository_api->execxLocal('checkout %s', $original_branch);
$ex = null;
try {