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Author SHA1 Message Date
epriestley
a8b4231244 Provide more information when unit tests fail with exceptions
Summary:
When a unit test throws an exception, provide more data (type, trace) in the
test failure message.

Previously, we would show only the message itself, which may not be very useful
in debugging test failures.

Test Plan: Ran "arc unit" on a test which throws, got a stack trace.

Reviewers: edward, btrahan, jungejason, nh, tuomaspelkonen, aran

Reviewed By: nh

CC: aran, nh

Differential Revision: 1123
2011-11-17 11:29:48 -08:00
Marek Sapota
4ea0541aeb Allow modification of the svn commit message via an event listener
Test Plan:
Wrote an event listener modifying the commit message and the message was
successfully changed.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, jungejason, epriestley

Differential Revision: 1103
2011-11-16 16:40:19 -08:00
Marek Sapota
53c64f64b0 Add events framework to Arcanist
Test Plan:
Added a test event listener, added an event dispatch in diff workflow, run the
workflow, the listener was called.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, jungejason, epriestley

Differential Revision: 1102
2011-11-16 16:38:22 -08:00
Emil Hesslow
5be54ec283 Use linear distance instead of square distance in levenshtein
Summary:
We used square distance that optimized for the wrong thing. Making the same
markers spread out instead of being together

Also added a very little cost for switching type. That will make diff types
stick together a bit more

Task ID: #623

Blame Rev:

Test Plan:
Ran my new unit test. And tested a few diff in phabricator

Revert Plan:

Tags:

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, epriestley

Differential Revision: 1112
2011-11-15 13:48:26 -08:00
Bob Trahan
16caf63d98 make arc issue a warning if file upload fails during diff creation
Summary:
just a little try / catch action in ArcanistDiffWorkflow.

"Ideally, it would be good to flag these changes somehow so that "arc patch" can
issue the inverse warning (e.g., "This patch could not be completely applied
because some binary data was not uploaded.") but that hasn't come up in a real
use case yet."

I think a change w/ filetype of FILE_IMAGE || FILE_BINARY *and* no phid means
that the upload failed so there's no additional flag needed.  (True?)  however,
it would be easy enough to store metadata that explicilty stated whether or not
the file upload succeeded.

(also / related - i looked through the arc patch workflow a bit and i don't
understand how the svn codepath loads up the actual binary files...  for git,
toGitPatch => buildBinaryChange => getBlob is the right path )

Test Plan:
 - set 'storage.mysql-engine.max-size' to 0 in my conf, uploaded diffs with
files
 - noted in differential that it correctly detected images versus binary despite
file upload failing
 - noted in differential that images had some empty UI
 - reverted conf change, uploaded diffs with files
 - noted in differential file showed up
 - ran arc patch with DX, where DX had broken files
 - noted "Downloading binary data...

Exception:
ERR-BAD-PHID: No such file exists."

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, epriestley

Differential Revision: 1100
2011-11-12 09:57:22 -08:00
Nick Harper
28eae60821 Check that rev is accepted in arc mark-committed --finalize
Summary:
If arc amend is run on a rev that isn't accepted, it runs arc mark-committed
--finalize. The rev shouldn't be marked as committed if it hasn't been accepted,
so this diff adds in that check.

Test Plan:
Ran arc amend on a rev that hasn't been accepted, checked that it didn't get
marked as completed.

Reviewers: jungejason, epriestley

Reviewed By: epriestley

CC: aran, epriestley, nh

Differential Revision: 1104
2011-11-10 16:18:17 -08:00
epriestley
8c70ee3877 Fix ArcanistBundle to generate disjoint, minimal hunks
Summary: 'patch' chokes on hunks with too much trailing stuff. 'git apply'
chokes on overlapping hunks. Make them both happy. Write some test cases so I
stop breaking this stuff.

Test Plan:
  - Applied a previously-failing patch via SVN.
  - Applied a previously-failing-then-succeeding patch via Git.
  - Ran unit tests.

Reviewers: jungejason, btrahan, nh, tuomaspelkonen, aran

Reviewed By: jungejason

CC: aran, jungejason

Differential Revision: 1099
2011-11-09 18:06:14 -08:00
Chris Piro
2a78b2bffa bash completion: work around PHP CLI readline in command substitution
Summary: (At least my build of) PHP tries to do readline magic on the terminal
when invoked from the shell, even inside bash's command substitution operator.
Work around it by piping the output of ##echo## to ##php##, so the input isn't a
terminal.

Test Plan: ##bash$ arc li<TAB>## now gives me possible completions rather than
breaking and inserting a literal tab

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, epriestley

Differential Revision: 1096
2011-11-09 16:53:46 -08:00
epriestley
8a7e0b7783 Disable "color" extension in Mercurial in an extension-agnostic way
Summary:
In D1079, I added "--color never", but this flag is provided by the "color"
extension, which is why I missed it originally, because it doesn't show up until
you enable that extension. Providing it causes installs which don't have it
enabled (disabled is the default) to fail.

Use "--config" to disable color instead. This sets a configuration setting and
works regardless of whether the color extension is present.

Test Plan: Ran "arc diff" in a mercurial working copy with the color extension
enabled and disabled.

Reviewers: Makinde, jungejason, nh, tuomaspelkonen, aran

Reviewed By: nh

CC: aran, nh

Differential Revision: 1092
2011-11-08 18:32:40 -08:00
epriestley
a5bd88e5cb There's an off-by-one derp issue with this. 2011-11-07 17:19:23 -08:00
epriestley
0888d59ac9 Update Arcanist README text
Summary: Make this text a little more informative, this stuff is fairly stable
now and has actual documentation available.

Test Plan: Read the document.

Reviewers: Makinde, jungejason, nh, tuomaspelkonen, aran

Reviewed By: Makinde

CC: aran, Makinde

Differential Revision: 1086
2011-11-06 18:12:50 -08:00
epriestley
0718a413fd Remove "mercurial support is imaginary" warning from Arcanist
Summary: We ostensibly now support Mercurial at least mostly, so don't
underpromise quite so much.

Test Plan: Ran "arc diff" in a Mercurial working copy without being warned.

Reviewers: Makinde, jungejason, nh, tuomaspelkonen, aran

Reviewed By: Makinde

CC: aran, Makinde

Differential Revision: 1085
2011-11-06 18:02:06 -08:00
epriestley
cc3641e633 Prevent ArcanistBundle from generating patches with overlapping hunks
Summary: We currently may generate patches which have hunks that include overlapping context. Git was okay with this until at least 1.7.3.4, but started rejecting these patches some time later.

We already attempt to detect and prevent this condition, we just don't do a very good job of it. Fix the check so that we avoid generating overlapping hunks.

Test Plan:

  - Cleanly applied troublesome patches under Git 1.7.7.2.
  - Used "arc export --git" to verify patches generate without overlapping sections.
  - Locally changed $context to 2 and 1, verified patch behavior was reasonable.

Reviewers: kdeggelman, bizrad6, jonathanhester, jungejason, nh, tuomaspelkonen, aran

CC:

Differential Revision: 1084
2011-11-06 17:52:21 -08:00
epriestley
42b69af59b Disable color extensions in Mercurial
Summary: Mercurial has a --color flag which disables the use of ANSI colors. Use
it to prevent "hg diff" from giving us colorized diff output.

Test Plan: Ran "hg diff --color never", verified it disabled ANSI color in diff
output.

Reviewers: Makinde, jungejason, nh, tuomaspelkonen, aran

Reviewed By: aran

CC: aran

Differential Revision: 1079
2011-11-04 15:21:57 -07:00
epriestley
5150252f91 Add very hacky encoding transformation support for arc
Summary:
Adds a secret, undoucmented "encoding" key to ".arcconfig" which makes a very
half-hearted effort to convert encodings. This is probably good enough that
Differential can be used for code review, but there will be issues with 'arc
patch', 'arc export', paste, maybe conduit stuff, Diffusion, and whatever else I
haven't thought of.

This also doesn't store the original encoding so anything converted like this
won't reasonably be able to be made to work with all that stuff in the future.

See T452 for a broader discussion of the issues involved.

Test Plan:
Short circuited the UTF-8 detection to always fail, had my files "converted"
from ISO-8859-1 to UTF-8.

@davidreuss: you can test this by applying this patch to arcanist/, adding
'"encoding" : "ISO-8859-1"' to your .arcconfig, touching some non-ASCII file,
and then running "arc diff".

Reviewers: davidreuss, jungejason, tuomaspelkonen, aran

Reviewed By: davidreuss

CC: aran, davidreuss, epriestley, nshamg123

Differential Revision: 812
2011-11-04 14:07:12 -07:00
Marek Sapota
08ce2a2e2c Save committed revision id in workflow.
Summary:
Save commited revision id in workflow, so it can be used in Arcanist
didRunWorkflow hook.

Test Plan:
Running getRevisionID on the workflow should return id of the committed
revision.

Reviewers: epriestley, jungejason

Reviewed By: epriestley

CC: aran, epriestley, mareksapota

Differential Revision: 1078
2011-11-04 12:13:03 -07:00
epriestley
d57ea379c6 Fix "arc lint" exploding on new directories
Summary:
D1061 introduced a 'text file' check, but it fails under SVN for new
directories.

  - Revert D1061 (This reverts commit b2cd18252701be2093b52652fb3d1d94c5df571e.)
  - Make getChangedLines() return null to indicate that the operation doesn't
make sense. I think this was the intent of the code in the lint engine.
  - Fix a bug where running "arc lint" on a change in an SVN working copy from a
subdirectory would fail.
  - Fix a bug where warnings with no line information were incorrectly
discarded.

Test Plan:
  - Ran "arc lint" in an SVN working copy with a new directory (no failure).
  - Forced FilenameLinter to always raise a warning. Added a binary file and ran
"arc lint". The warning was reported for the new binary file, a new text file,
and a new directory.

Reviewers: jungejason, andrewjcg, nh, tuomaspelkonen, aran

Reviewed By: andrewjcg

CC: aran, andrewjcg, epriestley

Differential Revision: 1076
2011-11-03 14:28:04 -07:00
epriestley
59cd94d8eb Correctly implement getFileDataAtRevision()
Summary: Apparently I just never tested this or something. Make it work
correctly.

Test Plan: Ran "arc diff" in a Mercurial working copy with a binary file in
outgoing.

Reviewers: Makinde

Reviewed By: Makinde

CC: aran, Makinde

Differential Revision: 1074
2011-11-01 17:28:02 -07:00
epriestley
c53a43f54d Don't flag "Untracked" files in Mercurial as "Uncommitted"
Summary: We incorrectly add the "Uncommitted" flag to untracked files, which
causes them to raise various prompts and not respect "--allow-untracked".

Test Plan: Ran "arc diff --allow-untracked" in a clean working copy with
untracked files, was not fatally error'd.

Reviewers: Makinde, jungejason, nh, tuomaspelkonen, aran

Reviewed By: Makinde

CC: aran, Makinde, epriestley

Differential Revision: 1073
2011-11-01 17:23:29 -07:00
Marek Sapota
9070a123d3 Allow running arc patch without authentication.
Summary:
Allow `arc patch` without authentication if Phabricator instance has
'differential.anonymous-access' set to true.

Test Plan:
Set 'differential.anonymous-access' in Phabricator to true and run `arc patch`
without installing a certificate.  `arc patch` should work as expected.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, epriestley

Differential Revision: 1069
2011-11-01 15:31:04 -07:00
epriestley
f1874ddf33 Fix "arc diff" under Mercurial with a dirty working copy
Summary:
In D962, I switched us from using "hg summary" to "hg id" to find the working
copy revision. However, "hg id" reports the revision with a trailing "+" if the
working copy is dirty, so we fail before hitting the explicit check for this
later.

Trim off the trailing '+' if it is present.

Test Plan:
Ran "arc diff" in a dirty Mercurial working copy and got a good error message
about uncommitted changes.

  ~/repos/hg-working-copy $ arc diff
  WARNING: Mercurial support is largely imaginary right now.
  Usage Exception: You have uncommitted changes in this branch. Commit (or
revert) them before proceeding.

    Working copy: /INSECURE/repos/hg-working-copy/

    Uncommitted changes in working copy
      hello.c

Reviewers: Makinde, jungejason, nh, tuomaspelkonen, aran

Reviewed By: Makinde

CC: aran, Makinde

Differential Revision: 1070
2011-11-01 15:11:48 -07:00
Chris Piro
c0007ffd44 support newer PyLint column numbers
Summary: newer PyLint includes commas and a column number for every message
after the line number. ignore that if it's present.

Test Plan: ##arc lint --trace --lintall## a file with messages with the old and
new pylint (2.5), works fine with both

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, epriestley

Differential Revision: 1062
2011-10-31 13:53:09 -07:00
Andrew Gallagher
b2cd182527 Show lint warnings for non-"line-able" files
Summary:
Currently, lint messages are only included if they are errors or
if they affect lines which the diff changed.  The implementation
of this caused issues for non-text files (e.g. binaries), as line
change information is not available, and the corresponding lint
messages were dropped (for non-errors).

In this diff, only lint messages concerning text files are dropped
based on this line filtering.

Test Plan: arc lint with binary file

Reviewers: jungejason, epriestley

Reviewed By: epriestley

CC: aran, aravindn, andrewjcg, liat, epriestley

Differential Revision: 1061
2011-10-28 13:49:58 -07:00
Evan Priestley
3d29a9122c Merge pull request #7 from mareksapota-fb/master
Pull request for differential revision D1055
2011-10-28 09:26:14 -07:00
Marek Sapota
bb05ddfb5a Allow anyone to run arc commit on an accepted revision
Test Plan:
Using SVN make some changes to the repo, run `arc diff`.  As other user accept
the revision, add the changes to your repo using `arc patch` and then run `arc
commit --revision revisionID` to commit them.  Arcanist should ask if you are
sure that you want to commit this revision and if you answer `Y` it should
commit to SNV repo.

Reviewers: epriestley, jungejason

Reviewed By: epriestley

CC: aran, mareksapota, epriestley

Differential Revision: 1055
2011-10-28 09:18:32 -07:00
David Reuss
ebc2644994 Support other encodings in ArcanistDiffParser
Test Plan:
Tried viewing a diff detected as binary in diffusion with and without
setting my desired encoding. Worked as expected.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, epriestley

Differential Revision: 1008
2011-10-28 08:01:53 -07:00
Chris Piro
311449bcf8 add lint.pylint.pythonpath option for ArcanistPyLintLinter
Summary: allow adding PYTHONPATHs directly in addition to the hardcoded few
already allowed.

Test Plan: ##arc lint## successfully picks up the paths listed in my .arcconfig,
and no longer errors on modules not found from those directories

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, epriestley

Differential Revision: 1050
2011-10-26 21:29:55 -07:00
Evan Priestley
0c35cb80f2 Merge pull request #6 from mareksapota-fb/master
Pull request for differential revision D1052
2011-10-25 17:29:09 -07:00
Marek Sapota
6db055222a Allow anyone to mark Differential revisions as commited.
Test Plan:
Run `arc mark-committed` on a revision that you don't own, you should see a
prompt asking you if you really want to do that and if you answer `Y` it should
mark the revision as committed.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, epriestley, mareksapota

Differential Revision: 1052
2011-10-25 17:24:57 -07:00
epriestley
0b79132827 Refine whitespace and end-of-block detection for git binary literal patches in
mercurial changesets

Summary: Makes the parsing slightly more liberal so a test case from @Makinde
passes.

Test Plan: Ran unit tests.

Reviewers: Makinde, jungejason, nh, tuomaspelkonen, aran

Reviewed By: Makinde

CC: aran, Makinde

Differential Revision: 1054
2011-10-25 17:02:27 -07:00
Chris Piro
930b32a6b4 add 'lint.pylint.rcfile' option for ArcanistPyLintLinter
Summary: add the ability to specify an rcfile path either absolute or relative
to the project root.

Test Plan: added one for a project, ran ##arc lint --trace## to see the expected
result

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, epriestley

Differential Revision: 1046
2011-10-25 13:47:03 -07:00
Chris Piro
00e5ba7ddc fix bugs and documentation for ArcanistPyLintLinter
Summary:
- The top documentation is more readable, and the details about the severity
mapping regexps is moved to the top from inline -- they're important.
- array_merge() is used when appending command line args from
##lint.pylint.options## instead of '+'. The latter merges by key instead of
appending the two lists as intended.
- rely on the exit code instead of magic text that may or may not be there
depending on how ##pylint## is invoked.

These bugs were introduced in d762311a9d.

Test Plan: ##arc lint --trace##'d a bunch of Python source files in a project,
with and without PyLint messages. Added some ##lint.pylint.options## to see
proper appending behavior.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, epriestley, cpiro

Differential Revision: 1045
2011-10-25 13:46:33 -07:00
epriestley
a85e344425 Improve representation of replaced symlinks in Git
Summary:
See T584. Git renders these types of changes somewhat unusually. Ensure they are
rendered as changes.

The fact that a symlink was replaced is not explicitly rendered (e.g., "This
path was changed from a symlink to a regular file."), but can be inferred from
the 'unix:filemode' property change that will accompany the changeset. We could
also make it explicit but this type of change is rare enough that it's probably
good enough as-is.

Test Plan:
  - Ran unit test, which previously failed and now passes.
  - Created a diff which replaces a file with a symlink, verified it rendered a
little more sensibly.

Reviewers: aravindn, dschleimer, jungejason, nh, tuomaspelkonen

Reviewed By: nh

CC: aran, goldshlager, nh

Differential Revision: 1030
2011-10-24 23:38:56 -07:00
epriestley
df8c0e5e25 Don't do working copy checks for "arc amend --show"
Summary: See T587. Reduce the strictness of working copy checks when using
"--show", since there's a reasonable workflow where you 'arc patch' and then
'arc amend --revision X --show | git commit -a -F -' that currently won't work.
There are other ways to accomplish the same thing but this increases flexibility
overall.

Test Plan: Ran 'arc amend --show' with a dirty working copy, didn't get yelled
at.

Reviewers: jungejason, nh, tuomaspelkonen, aran

Reviewed By: nh

CC: aran, nh

Differential Revision: 1033
2011-10-24 23:37:47 -07:00
epriestley
f41d6889d2 Allow Arcanist to parse "git diff --binary" and "hg diff --git" format for
changes which add or alter binary files

Summary: See test cases, derived from "hg diff --git" and "git diff --binary".

Test Plan: Test cases work now.

Reviewers: Makinde, jungejason, nh, tuomaspelkonen, aran

Reviewed By: Makinde

CC: aran, Makinde

Differential Revision: 1047
2011-10-24 23:37:29 -07:00
epriestley
21985f3b4e Add isHeuristicBinaryFile(), a git-like check for binariness of fiels
Summary:
This is separated from D812. See D812, D1008, D1009. Separation allows us to
land these patches safely.

See T452 for a broader discussion of the issues involved.

Test Plan: See D812.

Reviewers: davidreuss, jungejason, nh, tuomaspelkonen, aran

Reviewed By: davidreuss

CC: aran, davidreuss

Differential Revision: 1040
2011-10-24 11:55:11 -07:00
epriestley
fcf37e38e3 @include_once libphutil, not @require_once
(Committing on behalf of @cpiro)

Summary: there's a check beneath to see if it worked, but @require_once will
fail silently if libphutil isn't available

Test Plan: tried it with libphutil findable and not findable, got expected
behavior

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, epriestley

Differential Revision: 1018
2011-10-20 14:35:34 -07:00
Evan Priestley
34451ceaaf Merge pull request #5 from mareksapota-fb/master
Pull request for differential revision D1022
2011-10-19 17:32:33 -07:00
Marek Sapota
f67401daa4 Fix parsing of git diff when diff.mnemonicprefix=true
Test Plan:
Go to /differential/diff/create and try to upload a patch that was created with
`git diff` when diff.mnemonicprefix was set to true.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, epriestley

Differential Revision: 1022
2011-10-19 17:29:12 -07:00
Jason Ge
ab50afe583 Fix breaking because of D935
Summary:
D935 missed one place of parseGitRelativeCommit() in
ArcanistExportWorkflow.

Test Plan: ran arc export and verify that it worked.

Reviewers: epriestley, tuomaspelkonen, aran

Reviewed By: aran

CC: aran

Differential Revision: 1015
2011-10-17 19:32:38 -07:00
epriestley
1da98a11f1 Correctly parse git diffs with an empty file at the end
Summary: A minor bug in the parser prevented it from handling git diffs where an
empty file appears at the end of the diff. Since git appends an extra newline,
we failed to jump into the '$line === null' block.

Test Plan: Ran unit tests. Generated a revision which only deleted an empty
file.

Reviewers: jungejason, nh, tuomaspelkonen, aran

Reviewed By: nh

CC: aran, nh, epriestley

Differential Revision: 998
2011-10-10 19:03:48 -07:00
epriestley
2fd37a1728 Automatically detect when to mark revisions committed
Summary:
See D945. We have this kludgy "remote_hooks_installed" mess right now, but we
have enough information on the server nowadays to figure this out without it.

Also reduce code duplication by sharing the "mark-committed" workflow.

This causes "arc merge" to effect commit marks.

Test Plan:
In Git, Mercurial and SVN working copies ran like a million
amend/merge/commit/mark-committed commands with and without --finalize in
various states of revision completion.

This change is really hard to exhaustively test because of the number of
combinations of VCS, revision state, command, command flags, repository state
and tracking state. All the reasonable tests I could come up with worked
correctly, though.

Reviewers: Makinde, jungejason, nh, tuomaspelkonen, aran

Reviewed By: jungejason

CC: aran, jungejason

Differential Revision: 967
2011-09-27 11:06:02 -07:00
epriestley
fe5355e4e4 Use full-length hashes in Mercurial local commit information
Summary:
Expand 12-character hashes to 40-character hashes so other things will work
properly.

Also use "hg id" instead of "hg summary" to figure out where the working copy
is, since it's substantially simpler.

Test Plan: Ran "arc diff" and got properly 40-character hashes.

Reviewers: Makinde, aran

Reviewed By: Makinde

CC: aran, Makinde

Differential Revision: 962
2011-09-26 15:13:18 -07:00
epriestley
ef0a9cbb79 Parse 'hg status -C' to show file move/copy sources
Summary: For Mercurial parsing in Diffusion, it looks like the only command we
can use to get move/copy information is "hg status -C --rev <rev>", so add a
parser for it.

Test Plan: Ran unit tests.

Reviewers: Makinde, jungejason, nh, tuomaspelkonen, aran

Reviewed By: Makinde

CC: aran, Makinde

Differential Revision: 958
2011-09-26 14:25:50 -07:00
epriestley
752ef65020 Fix supportsRelativeLocalCommits() misspelling
Summary: I renamed this at some point but missed a callsite. See T519.

Test Plan: Ran "arc patch" in an SVN working copy.

Reviewers: Girish, jungejason

Reviewed By: Girish

CC: aran, Girish

Differential Revision: 959
2011-09-25 16:52:20 -07:00
epriestley
cbbd798e48 Split mercurial parsing and API
Summary: Move code to actually parse "hg" output into a separate class with some
tests, so I can reuse it in the import scripts. We should probably do this for
Git/SVN at some point, too.

Test Plan: Ran unit tests, used this class in Phabricator importers, grepped for
calls to removed private methods.

Reviewers: Makinde, jungejason, nh, tuomaspelkonen, aran

Reviewed By: Makinde

CC: aran, Makinde

Differential Revision: 942
2011-09-16 11:07:48 -07:00
epriestley
c84d6255b4 Support "immutable_history" doctrine in arc
Summary: When a project uses a conservative history mutability doctrine, never
try to amend history.

Test Plan: Ran "arc amend" in an "immutable_history" working copy.

Reviewers: fratrik, Makinde, aran, jungejason, tuomaspelkonen

Reviewed By: Makinde

CC: aran, Makinde, epriestley

Differential Revision: 862
2011-09-15 07:44:29 -07:00
epriestley
44959afd4b Add an "arc merge" workflow
Summary:
This should support conservative rewrite policies in git fairly well, under an
assumed workflow of:

  - Develop in local branches, never rewrite history.
  - Commit with "-m" or by typing a brief, non-template commit message
describing the checkpoint.
  - Provide rich information in the web console (reviewers, etc.)
  - Finalize with "git checkout master && arc merge branch && git push" or some
flavor thereof.

This supports Mercurial somewhat. The major problem is that "hg merge" fails if
the local is a fastforward of the remote, at which point there's nowhere we can
throw the commit message. Oh well. Just push it and we'll do our best to link
them up based on local commit info.

I am increasingly forming an opinion that Mercurial is "saftey-scissors git".
But also maybe I have no clue what I'm doing. I just don't understand why anyone
would think it's a good idea to have a trunk consisting of ~50% known-broken
revisions, random checkpoint parts, whitespace changes, typo fixes, etc. If you
use git with branching you can avoid this by making a trunk out of merges or
with rebase/amend, but there seems to be no way to have "one commit = one idea"
in any real sense in Mercurial.

Test Plan: Execute "arc merge" in git and mercurial.

Reviewers: fratrik, Makinde, aran, jungejason, tuomaspelkonen

Reviewed By: Makinde

CC: aran, epriestley, Makinde

Differential Revision: 860
2011-09-15 07:42:45 -07:00
epriestley
31ec011922 Move some VCS-specific logic into VCS APIs
Summary:
We have some git-specific logic on main pathways which should be in the API
class, move it around so "arc lint" with an engine works under Mercurial. This
resovles the error @makinde reported:

> PHP Catchable fatal error:  Argument 1 passed to
ArcanistBaseWorkflow::parseGitRelativeCommit() must be an instance of
ArcanistGitAPI, instance of ArcanistMercurialAPI given, called in
/home/makinde/.arc_install/arcanist/src/workflow/lint/ArcanistLintWorkflow.php
on line 131 and defined in
/home/makinde/.arc_install/arcanist/src/workflow/base/ArcanistBaseWorkflow.php
on line 830

Test Plan: Ran "arc diff" in git and hg working copies, plus "arc lint" with a
configured "lint_engine".

Reviewers: Makinde, aran, jungejason, nh, tuomaspelkonen

Reviewed By: Makinde

CC: aran, Makinde

Differential Revision: 935
2011-09-15 07:39:34 -07:00
epriestley
9df1b8a4bd Improve Arcanist Mercurial compatibility
Summary:
  - Use "hg parents" to figure out where outgoing changes originate from, not
"~1", since that's a new feature in Mercurial.
  - Add "--style default" all over the place since hg config can override this
(similar to the date config issues we saw in git).
  - Cache working copy status so we don't run full hg diffs like 30 times
(similar to git/svn APIs).
  - Use full "--git" flag instead of rather cryptic "-g".

Test Plan: Ran "arc diff" in my hg working copy, got the diff I expected.

Reviewers: Makinde, aran, jungejason, nh, tuomaspelkonen

Reviewed By: Makinde

CC: aran, Makinde

Differential Revision: 934
2011-09-15 07:36:42 -07:00