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Author SHA1 Message Date
Junio C Hamano 5f2ec211f6 Merge branch 'bk/p4-pre-edit-changelist'
"git p4" learned four new hooks and also "--no-verify" option to
bypass them (and the existing "p4-pre-submit" hook).

* bk/p4-pre-edit-changelist:
  git-p4: add RCS keyword status message
  git-p4: add p4 submit hooks
  git-p4: restructure code in submit
  git-p4: add --no-verify option
  git-p4: add p4-pre-submit exit text
  git-p4: create new function run_git_hook
  git-p4: rewrite prompt to be Windows compatible
2020-04-22 13:42:43 -07:00
Junio C Hamano 9a0fa1709c Merge branch 'yz/p4-py3'
Update "git p4" to work with Python 3.

* yz/p4-py3:
  ci: use python3 in linux-gcc and osx-gcc and python2 elsewhere
  git-p4: use python3's input() everywhere
  git-p4: simplify regex pattern generation for parsing diff-tree
  git-p4: use dict.items() iteration for python3 compatibility
  git-p4: use functools.reduce instead of reduce
  git-p4: fix freezing while waiting for fast-import progress
  git-p4: use marshal format version 2 when sending to p4
  git-p4: open .gitp4-usercache.txt in text mode
  git-p4: convert path to unicode before processing them
  git-p4: encode/decode communication with git for python3
  git-p4: encode/decode communication with p4 for python3
  git-p4: remove string type aliasing
  git-p4: change the expansion test from basestring to list
  git-p4: make python2.7 the oldest supported version
2020-03-25 13:57:43 -07:00
Ben Keene 1ec4a0a356 git-p4: add RCS keyword status message
During the p4 submit process, git-p4 will attempt to apply a patch
to the files found in the p4 workspace. However, if P4 uses RCS
keyword expansion, this patch may fail.

When the patch fails, the user is alerted to the failure and that git-p4
will attempt to clear the expanded text from the files and re-apply
the patch. The current version of git-p4 does not tell the user the
result of the re-apply attempt after the RCS expansion has been removed
which can be confusing.

Add a new print statement after the git patch has been successfully
applied when the RCS keywords have been cleansed.

Signed-off-by: Ben Keene <seraphire@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-14 08:58:53 -08:00
Ben Keene 38ecf75244 git-p4: add p4 submit hooks
The git command "commit" supports a number of hooks that support
changing the behavior of the commit command.  The git-p4.py program only
has one existing hook, "p4-pre-submit".  This command occurs early in
the process.  There are no hooks in the process flow for modifying
the P4 changelist text programmatically.

Adds 3 new hooks to git-p4.py to the submit option.

The new hooks are:
* p4-prepare-changelist - Execute this hook after the changelist file
  has been created. The hook will be executed even if the
  --prepare-p4-only option is set.  This hook ignores the --no-verify
  option in keeping with the existing behavior of git commit.

* p4-changelist - Execute this hook after the user has edited the
  changelist. Do not execute this hook if the user has selected the
  --prepare-p4-only option. This hook will honor the --no-verify,
  following the conventions of git commit.

* p4-post-changelist - Execute this hook after the P4 submission process
  has completed successfully. This hook takes no parameters and is
  executed regardless of the --no-verify option.  It's return value will
  not be checked.

The calls to the new hooks: p4-prepare-changelist, p4-changelist,
and p4-post-changelist should all be called inside the try-finally
block.

Signed-off-by: Ben Keene <seraphire@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-14 08:58:53 -08:00
Ben Keene cd1e0dc47a git-p4: restructure code in submit
In preparation for adding new hooks to the submit method of git-p4,
restructure the applyCommit function in the P4Submit class.  Make the
following changes:

* Move all the code after the definition of submitted = False into the
  Try-Finally block. This ensures that any error that occurs will
  properly recover.  This is not necessary with the current code because
  none of it should throw an exception, however the next set of changes
  will introduce exceptional code.

  Existing flow control can remain as defined - the if-block for
  prepare-p4-only sets the local variable "submitted" to True and exits
  the function. New early exits, leave submitted set to False so the
  Finally block will undo changes to the P4 workspace.

* Make the small usability change of adding an empty string to the
  print statements displayed to the user when the prepare-p4-only option
  is selected.  On Windows, the command print() may display a set of
  parentheses "()" to the user when the print() function is called with
  no parameters. By supplying an empty string, the intended blank line
  will print as expected.

* Fix a small bug when the submittedTemplate is edited by the user
  and all content in the file is removed. The existing code will throw
  an exception if the separateLine is not found in the file. Change this
  code to test for the separator line using a find() test first and only
  split on the separator if it is found.

* Additionally, add the new behavior that if the changelist file has
  been completely emptied that the Submit action for this changelist
  will be aborted.

Signed-off-by: Ben Keene <seraphire@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-14 08:58:53 -08:00
Ben Keene 4935c458c2 git-p4: add --no-verify option
Add new command line option --no-verify:

Add a new command line option "--no-verify" to the Submit command of
git-p4.py.  This option will function in the spirit of the existing
--no-verify command line option found in git commit. It will cause the
P4 Submit function to ignore the existing p4-pre-submit.

Change the execution of the existing trigger p4-pre-submit to honor the
--no-verify option. Before exiting on failure of this hook, display
text to the user explaining which hook has failed and the impact
of using the --no-verify option.

Change the call of the p4-pre-submit hook to use the new run_git_hook
function. This is in preparation of additional hooks to be added.

Signed-off-by: Ben Keene <seraphire@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-11 12:04:05 -08:00
Ben Keene aa8b766a13 git-p4: add p4-pre-submit exit text
When the p4-pre-submit exits with a non-zero exit code, the application
will abort the process with no additional information presented to the
user. This can be confusing for new users as it may not be clear that
the p4-pre-submit action caused the error.

Add text to explain why the program aborted the submit action.

Signed-off-by: Ben Keene <seraphire@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-11 12:04:05 -08:00
Ben Keene 9f59ca4d6a git-p4: create new function run_git_hook
This commit is in preparation of introducing new p4 submit hooks.

The current code in the python script git-p4.py makes the assumption
that the git hooks can be executed by subprocess.call() function.
However, when git is run on Windows, this may not work as expected.

The subprocess.call() does not cover all the use cases for properly
executing the various types of executable files on Windows.

Prepare for remediation by adding a new function, run_git_hook, that
takes 2 parameters:
* the short filename of an optionally registered git hook
* an optional list of parameters

The run_git_hook function will honor the existing behavior seen in the
current code for executing the p4-pre-submit hook:

* Hooks are looked for in core.hooksPath directory.
* If core.hooksPath is not set, then the current .git/hooks directory
  is checked.
* If the hook does not exist, the function returns True.
* If the hook file is not accessible, the function returns True.
* If the hook returns a zero exit code when executed, the function
  return True.
* If the hook returns a non-zero exit code, the function returns False.

Add the following additional functionality if git-p4.py is run on
Windows.
* If hook file is not located without an extension, search for
  any file in the associated hook directory (from the list above) that
  has the same name but with an extension.
* If the file is still not found, return True (the hook is missing)

Add a new function run_hook_command() that wraps the OS dependent
functionality for actually running the subprocess.call() with OS
dependent behavior:

If a hook file exists on Windows:
* If there is no extension, set the launch executable to be SH.EXE
  - Look for SH.EXE under the environmental variable EXEPATH in the
    bin/ directory.
  - If %EXEPATH%/bin/sh.exe exists, use this as the actual executable.
  - If %EXEPATH%/bin/sh.exe does not exist, use sh.exe
  - Execute subprocess.call() without the shell (shell=False)
* If there is an extension, execute subprocess.call() with teh shell
  (shell=True) and consider the file to be the executable.

The return value from run_hook_command() is the subprocess.call()
return value.

These functions are added in this commit, but are only staged and not
yet used.

Signed-off-by: Ben Keene <seraphire@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-11 12:04:05 -08:00
Ben Keene 6b602a2f97 git-p4: rewrite prompt to be Windows compatible
The existing function prompt(prompt_text) does not work correctly when
run on Windows 10 bash terminal when launched from the sourcetree
GUI application. The stdout is not flushed properly so the prompt text
is not displayed to the user until the next flush of stdout, which is
quite confusing.

Change this method by:
* Adding flush to stderr, stdout, and stdin
* Use readline from sys.stdin instead of raw_input.

The existing strip().lower() are retained.

Signed-off-by: Ben Keene <seraphire@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-11 12:04:05 -08:00
Luke Diamand 43f33e492a git-p4: avoid leak of file handle when cloning
Spotted by Eric Sunshine:

    https://public-inbox.org/git/CAPig+cRx3hG64nuDie69o_gdX39F=sR6D8LyA7J1rCErgu0aMA@mail.gmail.com/

Signed-off-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-01-30 12:21:13 -08:00
Luke Diamand 19fa5ac333 git-p4: check for access to remote host earlier
Check we can talk to the remote host before starting the git-fastimport
subchild.

Otherwise we fail to connect, and then exit, leaving git-fastimport
still running since we did not wait() for it.

Signed-off-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-01-30 12:20:58 -08:00
Luke Diamand 6026aff5bb git-p4: cleanup better on error exit
After an error, git-p4 calls die(). This just exits, and leaves child
processes still running.

Instead of calling die(), raise an exception and catch it where the
child process(es) (git-fastimport) are created.

This was analyzed in detail here:

    https://public-inbox.org/git/20190227094926.GE19739@szeder.dev/

This change does not address the particular issue of p4CmdList()
invoking a subchild and not waiting for it on error.

Signed-off-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-01-30 12:20:58 -08:00
Luke Diamand ca5b5cce62 git-p4: create helper function importRevisions()
This makes it easier to try/catch around this block of code to ensure
cleanup following p4 failures is handled properly.

Signed-off-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-01-30 12:20:58 -08:00
Luke Diamand 4c1d58675d git-p4: disable some pylint warnings, to get pylint output to something manageable
pylint is incredibly useful for finding bugs, but git-p4 has never used
it, so there are a lot of warnings that while important, don't actually
result in bugs.

Let's turn those off for now, so we can get some useful output.

Signed-off-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-01-30 12:20:58 -08:00
Luke Diamand 5c3d5020e6 git-p4: add P4CommandException to report errors talking to Perforce
Currently when there is a P4 error, git-p4 calls die() which just exits.

This then leaves the git-fast-import process still running, and can even
leave p4 itself still running.

As a result, git-p4 fails to exit cleanly. This is a particular problem
for people running the unit tests in regression.

Use this exception to report errors upwards, cleaning up as the error
propagates.

Signed-off-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-01-30 12:20:57 -08:00
Luke Diamand 837b3a6376 git-p4: make closeStreams() idempotent
Ensure that we can safely call self.closeStreams() multiple times, and
can also call it even if there is no git fast-import stream at all.

Signed-off-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-01-30 12:20:57 -08:00
Yang Zhao 7575f4fdec git-p4: use python3's input() everywhere
Python3 deprecates raw_input() from 2.7 and replaced it with input().
Since we do not need 2.7's input() semantics, `raw_input()` is aliased
to `input()` for easy forward compatability.

Signed-off-by: Yang Zhao <yang.zhao@skyboxlabs.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-01-15 12:53:40 -08:00
Yang Zhao ce425eb4e1 git-p4: simplify regex pattern generation for parsing diff-tree
It is not clear why a generator was used to create the regex used to
parse git-diff-tree output; I assume an early implementation required
it, but is not part of the mainline change.

Simply use a lazily initialized global instead.

Signed-off-by: Yang Zhao <yang.zhao@skyboxlabs.com>
Reviewed-by: Ben Keene <seraphire@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-01-15 12:53:40 -08:00
Yang Zhao 2e2aa8d903 git-p4: use dict.items() iteration for python3 compatibility
Python3 uses dict.items() instead of .iteritems() to provide
iteratoration over dict.  Although items() is technically less efficient
for python2.7 (allocates a new list instead of simply iterating), the
amount of data involved is very small and the penalty negligible.

Signed-off-by: Yang Zhao <yang.zhao@skyboxlabs.com>
Reviewed-by: Ben Keene <seraphire@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-01-15 12:53:40 -08:00
Yang Zhao a6b1306735 git-p4: use functools.reduce instead of reduce
For python3, reduce() has been moved to functools.reduce().  This is
also available in python2.7.

Signed-off-by: Yang Zhao <yang.zhao@skyboxlabs.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-01-15 12:53:40 -08:00
Yang Zhao 4294d741cc git-p4: fix freezing while waiting for fast-import progress
As part of its importing process, git-p4 sends a `checkpoint` followed
immediately by `progress` to fast-import to force synchronization.
Due to buffering, it is possible for the `progress` command to not be
flushed before git-p4 begins to wait for the corresponding response.
This causes the script to freeze completely, and is consistently
observable at least on python-3.6.9.

Make sure this command sequence is completely flushed before waiting.

Signed-off-by: Yang Zhao <yang.zhao@skyboxlabs.com>
Reviewed-by: Ben Keene <seraphire@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-01-15 12:53:40 -08:00
Yang Zhao 50da1e7393 git-p4: use marshal format version 2 when sending to p4
p4 does not appear to understand marshal format version 3 and above.
Version 2 was the latest supported by python-2.7.

Signed-off-by: Yang Zhao <yang.zhao@skyboxlabs.com>
Reviewed-by: Ben Keene <seraphire@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-01-15 12:53:40 -08:00
Yang Zhao 5a5577d808 git-p4: open .gitp4-usercache.txt in text mode
Opening .gitp4-usercache.txt in text mode makes python 3 happy without
explicitly adding encoding and decoding.

Signed-off-by: Yang Zhao <yang.zhao@skyboxlabs.com>
Reviewed-by: Ben Keene <seraphire@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-01-15 12:53:40 -08:00
Yang Zhao d38208a297 git-p4: convert path to unicode before processing them
P4 allows essentially arbitrary encoding for path data while we would
perfer to be dealing only with unicode strings.  Since path data need to
survive round-trip back to p4, this patch implements the general policy
that we store path data as-is, but decode them to unicode before doing
any non-trivial processing.

A new `decode_path()` method is provided that generally does the correct
conversion, taking into account `git-p4.pathEncoding` configuration.

For python2.7, path strings will be left as-is if it only contains ASCII
characters.

For python3, decoding is always done so that we have str objects.

Signed-off-by: Yang Zhao <yang.zhao@skyboxlabs.com>
Reviewed-by: Ben Keene <seraphire@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-01-15 12:53:40 -08:00
Yang Zhao 86dca24b7b git-p4: encode/decode communication with git for python3
Under python3, calls to write() on the stream to `git fast-import` must
be encoded.  This patch wraps the IO object such that this encoding is
done transparently.

Conversely, any text data read from subprocesses must also be decoded
before running through the rest of the pipeline.

Signed-off-by: Yang Zhao <yang.zhao@skyboxlabs.com>
Reviewed-by: Ben Keene <seraphire@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-01-15 12:53:40 -08:00
Yang Zhao 6cec21a82f git-p4: encode/decode communication with p4 for python3
The marshalled dict in the response given on STDOUT by p4 uses `str` for
keys and string values. When run using python3, these values are
deserialized as `bytes`, leading to a whole host of problems as the rest
of the code assumes `str` is used throughout.

This patch changes the deserialization behaviour such that, as much as
possible, text output from p4 is decoded to native unicode strings.
Exceptions are made for the field `data` as it is usually arbitrary
binary data. `depotFile[0-9]*`, `path`, and `clientFile` are also exempt
as they contain path strings not encoded with UTF-8, and must survive
round-trip back to p4.

Conversely, text data being piped to p4 must always be encoded when
running under python3.

encode_text_stream() and decode_text_stream() were added to make these
transformations more convenient.

Signed-off-by: Yang Zhao <yang.zhao@skyboxlabs.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-01-15 12:53:39 -08:00
Yang Zhao 1f8b46d0a4 git-p4: remove string type aliasing
Now that python2.7 is the minimum required version and we no longer use
the basestring type, it is not necessary to use type aliasing to ensure
python3 compatibility.

Signed-off-by: Yang Zhao <yang.zhao@skyboxlabs.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-01-15 12:53:39 -08:00
Ben Keene 484d09c303 git-p4: change the expansion test from basestring to list
Python 3 handles strings differently than Python 2.7. Since Python 2
is reaching it's end of life, a series of changes are being submitted to
enable python 3.5 and following support. The current code fails basic
tests under python 3.5.

Some codepaths can represent a command line the program
internally prepares to execute either as a single string
(i.e. each token properly quoted, concatenated with $IFS) or
as a list of argv[] elements, and there are 9 places where
we say "if X is isinstance(_, basestring), then do this
thing to handle X as a command line in a single string; if
not, X is a command line in a list form".

This does not work well with Python 3, as there is no
basestring (everything is Unicode now), and even with Python
2, it was not an ideal way to tell the two cases apart,
because an internally formed command line could have been in
a single Unicode string.

Flip the check to say "if X is not a list, then handle X as
a command line in a single string; otherwise treat it as a
command line in a list form".

This will get rid of references to 'basestring', to migrate
the code ready for Python 3.

Thanks-to: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Ben Keene <seraphire@gmail.com>
Signed-off-by: Yang Zhao <yang.zhao@skyboxlabs.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-01-15 12:53:39 -08:00
Yang Zhao 0b4396f068 git-p4: make python2.7 the oldest supported version
Python2.6 and earlier have been end-of-life'd for many years now, and
we actually already use 2.7-only features in the code. Make the version
check reflect current realities.

This also removes the need to explicitly define CalledProcessError if
it's not available.

Signed-off-by: Yang Zhao <yang.zhao@skyboxlabs.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-01-15 12:53:39 -08:00
Junio C Hamano bc855232bc Merge branch 'bk/p4-misc-usability'
Miscellaneous small UX improvements on "git-p4".

* bk/p4-misc-usability:
  git-p4: show detailed help when parsing options fail
  git-p4: yes/no prompts should sanitize user text
2020-01-02 12:38:29 -08:00
Ben Keene 608e380502 git-p4: show detailed help when parsing options fail
When a user provides invalid parameters to git-p4, the program
reports the failure but does not provide the correct command syntax.

Add an exception handler to the command-line argument parser to display
the command's specific command line parameter syntax when an exception
is thrown. Rethrow the exception so the current behavior is retained.

Signed-off-by: Ben Keene <seraphire@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-12-16 12:32:13 -08:00
Ben Keene e2aed5fd5b git-p4: yes/no prompts should sanitize user text
When prompting the user interactively for direction, the tests are
not forgiving of user input format.

For example, the first query asks for a yes/no response. If the user
enters the full word "yes" or "no" or enters a capital "Y" the test
will fail.

Create a new function, prompt(prompt_text) where
  * prompt_text is the text prompt for the user
  * returns a single character where valid return values are
      found by inspecting prompt_text for single characters
      surrounded by square brackets

This new function must  prompt the user for input and sanitize it by
converting the response to a lower case string, trimming leading and
trailing spaces, and checking if the first character is in the list
of choices. If it is, return the first letter.

Change the current references to raw_input() to use this new function.

Since the method requires the returned text to be one of the available
choices, remove the loop from the calling code that handles response
verification.

Thanks-to: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Ben Keene <seraphire@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-12-16 12:31:47 -08:00
r.burenkov ea94b16fb8 git-p4: honor lfs.storage configuration variable
"git lfs" allows users to specify the custom storage location with
the configuration variable `lfs.storage`, but when interacting with
GitLFS pointers, "git p4" always uses the hardcoded default that is
the `.git/lfs/` directory, without paying attention to the
configuration.

Use the value configured in `lfs.storage`, if exists, as all the
"git" operations do, for consistency.

Signed-off-by: r.burenkov <panzercheg@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-12-11 09:59:17 -08:00
Philip.McGraw de5abb5f7a git-p4: auto-delete named temporary file
Avoid double-open exceptions on Windows platform when
calculating for lfs compressed size threshold
(git-p4.largeFileCompressedThreshold) comparisons.

Take new approach using the NamedTemporaryFile()
file-like object as input to the ZipFile() which
auto-deletes after implicit close leaving with scope.

Original code had double-open exception on Windows
platform because file still open from NamedTemporaryFile()
using generated filename instead of object.

Thanks to Andrey for patiently suggesting several
iterations on this change for avoiding exceptions!

Also print error details after resulting IOError to make
debugging cause of exception less mysterious when it has
nothing to do with "git version recent enough."

Signed-off-by: Philip.McGraw <Philip.McGraw@bentley.com>
Reviewed-by: Andrey Mazo <ahippo@yandex.com>
Acked-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-06 20:43:37 +09:00
Junio C Hamano 44275f5e1b Merge branch 'am/p4-branches-excludes'
"git p4" update.

* am/p4-branches-excludes:
  git-p4: respect excluded paths when detecting branches
  git-p4: add failing test for "git-p4: respect excluded paths when detecting branches"
  git-p4: don't exclude other files with same prefix
  git-p4: add failing test for "don't exclude other files with same prefix"
  git-p4: don't groom exclude path list on every commit
  git-p4: match branches case insensitively if configured
  git-p4: add failing test for "git-p4: match branches case insensitively if configured"
  git-p4: detect/prevent infinite loop in gitCommitByP4Change()
2019-07-09 15:25:40 -07:00
Junio C Hamano add59c4708 Merge branch 'mm/p4-unshelve-windows-fix'
The command line to invoke a "git cat-file" command from inside
"git p4" was not properly quoted to protect a caret and running a
broken command on Windows, which has been corrected.

* mm/p4-unshelve-windows-fix:
  p4 unshelve: fix "Not a valid object name HEAD0" on Windows
2019-06-17 10:15:19 -07:00
Mike Mueller c3f2358de3 p4 unshelve: fix "Not a valid object name HEAD0" on Windows
git p4 unshelve was failing with these errors:

fatal: Not a valid object name HEAD0
Command failed: git cat-file commit HEAD^0

(git version 2.21.0.windows.1, python 2.7.16)

The pOpen call used by git-p4 to invoke the git command can take either a
string or an array as a first argument. The array form is preferred
because platform-specific escaping of special characters will be
handled automatically.(https://docs.python.org/2/library/subprocess.html)
The extractLogMessageFromGitCommit method was, however, using the string
form and so the caret (^) character in the HEAD^0 argument was not being
escaped on Windows.  The caret happens to be the escape character, which
is why the git command was receiving HEAD0.

The behaviour can be confirmed by typing ECHO HEAD^0 at the command-
prompt, which emits HEAD0.

The solution is simply to use the array format of passing the command to
fOpen, which is recommended and used in other parts of this code anyway.

Signed-off-by: Mike Mueller <mike.mueller@moodys.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-05-28 13:32:20 -07:00
Simon Williams 0108f47eb3 git-p4: allow unshelving of branched files
When unshelving a changelist, git-p4 tries to work out the appropriate
parent commit in a given branch (default: HEAD).  To do this, it looks
at the state of any pre-existing files in the target Perforce branch,
omitting files added in the shelved changelist.  Currently, only files
added (or move targets) are classed as new.  However, files integrated
from other branches (i.e. a 'branch' action) also need to be considered
as added, for this purpose.

Signed-off-by: Simon Williams <simon@no-dns-yet.org.uk>
Acked-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-05-28 10:54:42 -07:00
Mazo, Andrey d15068a650 git-p4: respect excluded paths when detecting branches
Currently, excluded paths are only handled in the following cases:
 * no branch detection;
 * branch detection with using clientspec.

However, excluded paths are not respected in case of
branch detection without using clientspec.

Fix this by consulting the list of excluded paths
when splitting files across branches.

Signed-off-by: Andrey Mazo <amazo@checkvideo.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-02 11:25:42 +09:00
Mazo, Andrey a2bee10ad9 git-p4: don't exclude other files with same prefix
Make sure not to exclude files unintentionally
if exclude paths are specified without a trailing /.
I.e., don't exclude "//depot/file_dont_exclude" if run with "-//depot/file".

Do this by ensuring that paths without a trailing "/" are only matched completely.

Also, abort path search on the first match as a micro-optimization.

Signed-off-by: Andrey Mazo <amazo@checkvideo.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-02 11:25:41 +09:00
Mazo, Andrey ff8c50ed0c git-p4: don't groom exclude path list on every commit
Currently, `cloneExclude` array is being groomed (by removing trailing "...")
on every changeset.
(since `extractFilesFromCommit()` is called on every imported changeset)

As a micro-optimization, do it once while parsing arguments.
Also, prepend "/" and remove trailing "..." at the same time.

Signed-off-by: Andrey Mazo <amazo@checkvideo.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-02 11:25:41 +09:00
Mazo, Andrey f2768cb343 git-p4: match branches case insensitively if configured
git-p4 knows how to handle case insensitivity in file paths
if core.ignorecase is set.
However, when determining a branch for a file,
it still does a case-sensitive prefix match.
This may result in some file changes to be lost on import.

For example, given the following commits
 1. add //depot/main/file1
 2. add //depot/DirA/file2
 3. add //depot/dira/file3
 4. add //depot/DirA/file4
and "branchList = main:DirA" branch mapping,
commit 3 will be lost.

So, do branch search case insensitively if running with core.ignorecase set.
Teach splitFilesIntoBranches() to use the p4PathStartsWith() function
for path prefix matches instead of always case-sensitive match.

Signed-off-by: Andrey Mazo <amazo@checkvideo.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-02 11:25:41 +09:00
Mazo, Andrey 2dda741279 git-p4: detect/prevent infinite loop in gitCommitByP4Change()
Under certain circumstances, gitCommitByP4Change() can enter an infinite
loop resulting in `git p4 sync` hanging forever.

The problem is that
`git rev-list --bisect <latest> ^<earliest>` can return `<latest>`,
which would result in reinspecting <latest> and potentially an infinite loop.

This can happen when importing just a subset of P4 repository
and/or with explicit "--changesfile" option.

A real-life example:
"""
    looking in ref refs/remotes/p4/mybranch for change 26894 using bisect...
    Reading pipe: git rev-parse refs/remotes/p4/mybranch
    trying: earliest  latest 4daff81c520a82678e1ef347f2b5e97258101ae1
    Reading pipe: git rev-list --bisect 4daff81c520a82678e1ef347f2b5e97258101ae1
    Reading pipe: git cat-file commit 147f5d3292af2e1cc4a56a7b96db845144c68486
    current change 25339
    trying: earliest ^147f5d3292af2e1cc4a56a7b96db845144c68486 latest 4daff81c520a82678e1ef347f2b5e97258101ae1
    Reading pipe: git rev-list --bisect 4daff81c520a82678e1ef347f2b5e97258101ae1 ^147f5d3292af2e1cc4a56a7b96db845144c68486
    Reading pipe: git cat-file commit 51db83df9d588010d0bd995641c85aa0408a5bb9
    current change 25420
    trying: earliest ^51db83df9d588010d0bd995641c85aa0408a5bb9 latest 4daff81c520a82678e1ef347f2b5e97258101ae1
    Reading pipe: git rev-list --bisect 4daff81c520a82678e1ef347f2b5e97258101ae1 ^51db83df9d588010d0bd995641c85aa0408a5bb9
    Reading pipe: git cat-file commit e8f83909ceb570f5a7e48c2853f3c5d8207cea52
    current change 25448
    trying: earliest ^e8f83909ceb570f5a7e48c2853f3c5d8207cea52 latest 4daff81c520a82678e1ef347f2b5e97258101ae1
    Reading pipe: git rev-list --bisect 4daff81c520a82678e1ef347f2b5e97258101ae1 ^e8f83909ceb570f5a7e48c2853f3c5d8207cea52
    Reading pipe: git cat-file commit 09a48eb7acd594dce52e06681be9c366e1844d66
    current change 25521
    trying: earliest ^09a48eb7acd594dce52e06681be9c366e1844d66 latest 4daff81c520a82678e1ef347f2b5e97258101ae1
    Reading pipe: git rev-list --bisect 4daff81c520a82678e1ef347f2b5e97258101ae1 ^09a48eb7acd594dce52e06681be9c366e1844d66
    Reading pipe: git cat-file commit 4daff81c520a82678e1ef347f2b5e97258101ae1
    current change 26907
    trying: earliest ^09a48eb7acd594dce52e06681be9c366e1844d66 latest 4daff81c520a82678e1ef347f2b5e97258101ae1
    Reading pipe: git rev-list --bisect 4daff81c520a82678e1ef347f2b5e97258101ae1 ^09a48eb7acd594dce52e06681be9c366e1844d66
    Reading pipe: git cat-file commit 4daff81c520a82678e1ef347f2b5e97258101ae1
    current change 26907
    trying: earliest ^09a48eb7acd594dce52e06681be9c366e1844d66 latest 4daff81c520a82678e1ef347f2b5e97258101ae1
    Reading pipe: git rev-list --bisect 4daff81c520a82678e1ef347f2b5e97258101ae1 ^09a48eb7acd594dce52e06681be9c366e1844d66
    Reading pipe: git cat-file commit 4daff81c520a82678e1ef347f2b5e97258101ae1
    current change 26907
    ...
"""

The fix is two-fold:
 * detect an infinite loop and die right away
   instead of looping forever;
 * make sure, `git rev-list --bisect` can't return "latestCommit" again
   by excluding it from the rev-list range explicitly.

Signed-off-by: Andrey Mazo <amazo@checkvideo.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-02 11:25:41 +09:00
Junio C Hamano 40b8ba2c44 Merge branch 'ld/git-p4-shelve-update-fix'
"git p4" failed to update a shelved change when there were moved
files, which has been corrected.

* ld/git-p4-shelve-update-fix:
  git-p4: handle update of moved/copied files when updating a shelve
  git-p4: add failing test for shelved CL update involving move/copy
2019-02-05 14:26:10 -08:00
Luke Diamand 7a10946ab9 git-p4: handle update of moved/copied files when updating a shelve
Perforce requires a complete list of files being operated on. If
git is updating an existing shelved changelist, then any files
which are moved or copied were not being added to this list.

Signed-off-by: Luke Diamand <luke@diamand.org>
Acked-by: Andrey Mazo <amazo@checkvideo.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-01-18 09:43:40 -08:00
Peter Osterlund d4990d56a8 git-p4: fix problem when p4 login is not necessary
In a perforce setup where login is not required, communication fails
because p4_check_access does not understand the response from the p4
client. Fixed by detecting and ignoring the "info" response.

Signed-off-by: Peter Osterlund <peterosterlund2@gmail.com>
Acked-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-01-07 14:23:22 -08:00
Luke Diamand 89143ac28a git-p4: fully support unshelving changelists
The previous git-p4 unshelve support would check for changes
in Perforce to the files being unshelved since the original
shelve, and would complain if any were found.

This was to ensure that the user wouldn't end up with both the
shelved change delta, and some deltas from other changes in their
git commit.

e.g. given fileA:
      the
      quick
      brown
      fox

  change1: s/the/The/   <- p4 shelve this change
  change2: s/fox/Fox/   <- p4 submit this change
  git p4 unshelve 1     <- FAIL

This change teaches the P4Unshelve class to always create a parent
commit which matches the P4 tree (for the files being unshelved) at
the point prior to the P4 shelve being created (which is reported
in the p4 description for a shelved changelist).

That then means git-p4 can always create a git commit matching the
P4 shelve that was originally created, without any extra deltas.

The user might still need to use the --origin option though - there
is no way for git-p4 to work out the versions of all of the other
*unchanged* files in the shelve, since this information is not recorded
by Perforce.

Additionally this fixes handling of shelved 'move' operations.

Signed-off-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-16 13:28:49 +09:00
Luke Diamand 088131273b git-p4: unshelve into refs/remotes/p4-unshelved, not refs/remotes/p4/unshelved
The branch detection code looks for branches under refs/remotes/p4/...
and can end up getting confused if there are unshelved changes in
there as well. This happens in the function p4BranchesInGit().

Instead, put the unshelved changes into refs/remotes/p4-unshelved/<N>.

Signed-off-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-16 13:28:49 +09:00
Luke Diamand 0742b7c860 git-p4: do not fail in verbose mode for missing 'fileSize' key
If deleting or moving a file, sometimes P4 doesn't report the file size.

The code handles this just fine but some logging crashes. Stop this
happening.

There was some earlier discussion on the list about this:

https://public-inbox.org/git/xmqq1sqpp1vv.fsf@gitster.mtv.corp.google.com/

Signed-off-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-12 22:38:29 +09:00
Chen Bin 251c8c501f git-p4: add the `p4-pre-submit` hook
The `p4-pre-submit` hook is executed before git-p4 submits code.
If the hook exits with non-zero value, submit process not start.

Signed-off-by: Chen Bin <chenbin.sh@gmail.com>
Reviewed-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-01 13:37:18 -07:00