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Code Issues Releases Wiki Activity

Tweak error and status messages for commit ranges

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Summary: Improve/clarify some error messages a bit, hopefully.

Test Plan: Ran `arc which`, `arc diff`, etc., with various explicit, implicit, and `--head` flags. Read error messages, didn't catch anything too awkward.

Reviewers: talshiri

Reviewed By: talshiri

Subscribers: epriestley

Differential Revision: https://secure.phabricator.com/D9489
This commit is contained in:
epriestley 2014-06-11 16:35:50 -07:00
parent 6b192f3178
commit 9492b4ecba
3 changed files with 94 additions and 50 deletions
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76
src/repository/api/ArcanistGitAPI.php
View file

@ -16,7 +16,7 @@ final class ArcanistGitAPI extends ArcanistRepositoryAPI {
*/
const GIT_MAGIC_ROOT_COMMIT = '4b825dc642cb6eb9a060e54bf8d69288fbee4904';
private $symbolicHeadCommit = 'HEAD';
private $symbolicHeadCommit;
private $resolvedHeadCommit;
public static function newHookAPI($root) {
@ -81,16 +81,18 @@ final class ArcanistGitAPI extends ArcanistRepositoryAPI {
/**
* Tests if a child commit is descendant of a parent commit.
* If child and parent are the same, it returns false.
* @param child commit SHA.
* @param parent commit SHA.
* @return bool
* @param Child commit SHA.
* @param Parent commit SHA.
* @return bool True if the child is a descendant of the parent.
*/
private function isDescendant($child, $parent) {
list($common_ancestor) =
$this->execxLocal('merge-base %s %s', $child, $parent);
list($common_ancestor) = $this->execxLocal(
'merge-base %s %s',
$child,
$parent);
$common_ancestor = trim($common_ancestor);
return $common_ancestor == $parent && $common_ancestor != $child;
return ($common_ancestor == $parent) && ($common_ancestor != $child);
}
public function getLocalCommitInformation() {
@ -105,8 +107,8 @@ final class ArcanistGitAPI extends ArcanistRepositoryAPI {
} else {
// 2..N commits. We include commits reachable from HEAD which are
// not reachable from the relative commit; this is consistent with
// user expectations even though it is not actually the diff range.
// not reachable from the base commit; this is consistent with user
// expectations even though it is not actually the diff range.
// Particularly:
//
// |
@ -124,16 +126,38 @@ final class ArcanistGitAPI extends ArcanistRepositoryAPI {
// this as being the commits X and Y. If we log "B..Y", we only show
// Y. With "Y --not B", we show X and Y.
$base_commit = $this->getBaseCommit();
$head_commit = $this->getHeadCommit();
if ($this->isDescendant($head_commit, $base_commit) === false) {
throw new ArcanistUsageException(
"base commit ${base_commit} is not a child of head commit ".
"${head_commit}");
if ($this->symbolicHeadCommit !== null) {
$base_commit = $this->getBaseCommit();
$resolved_base = $this->resolveCommit($base_commit);
$head_commit = $this->symbolicHeadCommit;
$resolved_head = $this->getHeadCommit();
if (!$this->isDescendant($resolved_head, $resolved_base)) {
// NOTE: Since the base commit will have been resolved as the
// merge-base of the specified base and the specified HEAD, we can't
// easily tell exactly what's wrong with the range.
// For example, `arc diff HEAD --head HEAD^^^` is invalid because it
// is reversed, but resolving the commit "HEAD" will compute its
// merge-base with "HEAD^^^", which is "HEAD^^^", so the range will
// appear empty.
throw new ArcanistUsageException(
pht(
'The specified commit range is empty, backward or invalid: the '.
'base (%s) is not an ancestor of the head (%s). You can not '.
'diff an empty or reversed commit range.',
$base_commit,
$head_commit));
}
}
$against = csprintf('%s --not %s',
$this->getHeadCommit(), $this->getBaseCommit());
$against = csprintf(
'%s --not %s',
$this->getHeadCommit(),
$this->getBaseCommit());
}
// NOTE: Windows escaping of "%" symbols apparently is inherently broken;
@ -197,9 +221,17 @@ final class ArcanistGitAPI extends ArcanistRepositoryAPI {
"this repository.");
}
$this->setBaseCommitExplanation(
"it is the merge-base of '{$symbolic_commit}' and ".
"{$this->symbolicHeadCommit}, as you explicitly specified.");
if ($this->symbolicHeadCommit === null) {
$this->setBaseCommitExplanation(
"it is the merge-base of the explicitly specified base commit ".
"'{$symbolic_commit}' and HEAD.");
} else {
$this->setBaseCommitExplanation(
"it is the merge-base of the explicitly specified base commit ".
"'{$symbolic_commit}' and the explicitly specified head ".
"commit '{$this->symbolicHeadCommit}'.");
}
return trim($merge_base);
}
@ -331,8 +363,8 @@ final class ArcanistGitAPI extends ArcanistRepositoryAPI {
public function getHeadCommit() {
if ($this->resolvedHeadCommit === null) {
$this->resolvedHeadCommit =
$this->resolveCommit($this->symbolicHeadCommit);
$this->resolvedHeadCommit = $this->resolveCommit(
coalesce($this->symbolicHeadCommit, 'HEAD'));
}
return $this->resolvedHeadCommit;

21
src/workflow/ArcanistDiffWorkflow.php
View file

@ -397,15 +397,19 @@ EOTEXT
'*' => 'paths',
'head' => array(
'param' => 'commit',
'help' => "specify the head commit.\n".
"This disables many Arcanist/Phabricator features which depend on ".
"having access to the working copy.",
'help' => pht(
'Specify the end of the commit range. This disables many '.
'Arcanist/Phabricator features which depend on having access to '.
'the working copy.'),
'supports' => array('git'),
'nosupport' => array(
'svn' => pht('Subversion does not support commit ranges.'),
'hg' => pht('Mercurial does not support --head yet.'),
),
'conflicts' => array(
'lintall' => '--head suppresses lint.',
'advice' => '--head suppresses lint.',
),
)
);
@ -447,16 +451,11 @@ EOTEXT
$repo = $this->getRepositoryAPI();
$head_commit = $this->getArgument('head');
$range_supported = $repo->supportsCommitRanges();
if ($head_commit) {
if (!$range_supported) {
throw new ArcanistUsageException('Ranged are not supported');
}
if ($head_commit !== null) {
$repo->setHeadCommit($head_commit);
}
if ($range_supported) {
if ($repo->supportsCommitRanges()) {
$repo->getBaseCommit();
}

47
src/workflow/ArcanistWhichWorkflow.php
View file

@ -2,8 +2,6 @@
/**
* Show which revision or revisions are in the working copy.
*
* @group workflow
*/
final class ArcanistWhichWorkflow extends ArcanistBaseWorkflow {
@ -13,8 +11,8 @@ final class ArcanistWhichWorkflow extends ArcanistBaseWorkflow {
public function getCommandSynopses() {
return phutil_console_format(<<<EOTEXT
**which** (svn)
**which** [commit] (hg, git)
**which** [options] (svn)
**which** [options] [__commit__] (hg, git)
EOTEXT
);
}
@ -63,7 +61,12 @@ EOTEXT
),
'head' => array(
'param' => 'commit',
'help' => 'specify the head commit.'
'help' => pht('Specify the end of the commit range to select.'),
'nosupport' => array(
'svn' => pht('Subversion does not support commit ranges.'),
'hg' => pht('Mercurial does not support --head yet.'),
),
'supports' => array('git'),
),
'*' => 'commit',
);
@ -89,13 +92,9 @@ EOTEXT
$supports_ranges = $repository_api->supportsCommitRanges();
if ($this->getArgument('head')) {
if ($supports_ranges === false) {
throw new Exception('--head is not supported in this VCS');
}
$head_commit = $this->getArgument('head');
$arg .= " --head {$head_commit}";
$head_commit = $this->getArgument('head');
if ($head_commit !== null) {
$arg .= csprintf(' --head %R', $head_commit);
$repository_api->setHeadCommit($head_commit);
}
@ -128,22 +127,36 @@ EOTEXT
if ($repository_api instanceof ArcanistGitAPI) {
$head = $this->getArgument('head', 'HEAD');
$command = "git diff {$relative}..{$head}";
$command = csprintf('git diff %R', "{$relative}..{$head}");
} else if ($repository_api instanceof ArcanistMercurialAPI) {
$command = "hg diff --rev {$relative}";
$command = csprintf(
'hg diff --rev %R',
hgsprintf('%s', $relative));
} else {
throw new Exception('Unknown VCS!');
}
echo phutil_console_wrap(
phutil_console_format(
"**RELATIVE COMMIT**\n".
"**COMMIT RANGE**\n".
"If you run 'arc diff{$arg}', changes between the commit:\n\n"));
echo " {$relative} {$relative_summary}\n\n";
if ($head_commit === null) {
$will_be_sent = pht(
'...and the current working copy state will be sent to '.
'Differential, because %s',
$explanation);
} else {
$will_be_sent = pht(
'...and "%s" will be sent to Differential, because %s',
$head_commit,
$explanation);
}
echo phutil_console_wrap(
"...and the current working copy state will be sent to ".
"Differential, because {$explanation}\n\n".
"{$will_be_sent}\n\n".
"You can see the exact changes that will be sent by running ".
"this command:\n\n".
" $ {$command}\n\n".