'reset' command makes fast-import start a branch from scratch. It's name
is kept in lookup table but it's sha1 is null_sha1 (special value).
'notemodify' command can be used to add a note on branch head given it's
name. lookup_branch() is used it that case and it doesn't check for
null_sha1. So fast-import writes a note for null_sha1 object instead of
giving a error.
Add a check to deny adding a note on empty branch and add a corresponding
test.
Signed-off-by: Dmitry Ivankov <divanorama@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
'reset' command makes fast-import start a branch from scratch. It's name
is kept in lookup table but it's sha1 is null_sha1 (special value).
'tag' command can be used to tag a branch by it's name. lookup_branch()
is used it that case and it doesn't check for null_sha1. So fast-import
writes a tag for null_sha1 object instead of giving a error.
Add a check to deny tagging an empty branch and add a corresponding test.
Signed-off-by: Dmitry Ivankov <divanorama@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* di/fast-import-blob-tweak:
fast-import: treat cat-blob as a delta base hint for next blob
fast-import: count and report # of calls to diff_delta in stats
* di/fast-import-ident:
fsck: improve committer/author check
fsck: add a few committer name tests
fast-import: check committer name more strictly
fast-import: don't fail on omitted committer name
fast-import: add input format tests
* va/p4-branch-import:
git-p4: Add simple test case for branch import
git-p4: Allow branch definition with git config
git-p4: Allow filtering Perforce branches by user
git-p4: Correct branch base depot path detection
git-p4: Process detectCopiesHarder with --bool
git-p4: Add test case for copy detection
git-p4: Add test case for rename detection
git-p4: Add description of rename/copy detection options
git-p4: Allow setting rename/copy detection threshold
* da/difftool-mergtool-refactor:
mergetools/meld: Use '--output' when available
mergetool--lib: Refactor tools into separate files
mergetool--lib: Make style consistent with git
difftool--helper: Make style consistent with git
* js/i18n-scripts:
submodule: take advantage of gettextln and eval_gettextln.
stash: take advantage of eval_gettextln
pull: take advantage of eval_gettextln
git-am: take advantage of gettextln and eval_gettextln.
gettext: add gettextln, eval_gettextln to encode common idiom
This fixes a segfault introduced by 051e400; via it, no longer able to
trigger the http/smartserv race.
Signed-off-by: Brian Harring <ferringb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
As the use of http-fetch without -a can create an object store that is
invalid to the point where it cannot even be fsck'd, mark it as
deprecated. A future release should change the default and then
remove the option entirely.
Signed-off-by: Ben Walton <bwalton@artsci.utoronto.ca>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Correct a few grammar issues in gitrepository-layout.txt and also
rewords a few sections for clarity.
Remove references to using http-fetch without -a to create a broken
repository.
Mark a few areas of the repository structure as legacy.
Signed-off-by: Ben Walton <bwalton@artsci.utoronto.ca>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* jn/maint-test-return:
t3900: do not reference numbered arguments from the test script
test: cope better with use of return for errors
test: simplify return value of test_run_
* cb/maint-quiet-push:
receive-pack: do not overstep command line argument array
propagate --quiet to send-pack/receive-pack
Conflicts:
Documentation/git-receive-pack.txt
Documentation/git-send-pack.txt
fast-import allows to tag objects by sha1 and to query sha1 of objects
being imported. So it should allow to tag these objects, make it do so.
Signed-off-by: Dmitry Ivankov <divanorama@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
fast-import allows to create an annotated tag that annotates a blob,
via mark or direct sha1 specification.
For mark it works, for sha1 it tries to read the object. It tries to
do so via read_sha1_file, and then checks the size to be at least 46.
That's weird, let's just allow to (annotated) tag any object referenced
by sha1. If the object originates from our packfile, we still fail though.
Signed-off-by: Dmitry Ivankov <divanorama@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Create a basic branch structure in P4 and clone it with git-p4.
Also, make an update on P4 side and check if git-p4 imports it correctly.
The branch structure is created in such a way that git-p4 will fail to import
updates if patch "git-p4: Correct branch base depot path detection" is not
applied.
Signed-off-by: Vitor Antunes <vitor.hda@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Perforce does not strictly require the usage of branch specifications to create
branches. In these cases the branch detection code of git-p4 will not be able to
import them.
This patch adds support for git-p4.branchList configuration option, allowing
branches to be defined in git config.
Signed-off-by: Vitor Antunes <vitor.hda@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
All branches in the Perforce server are downloaded to allow branch detection. If
you have a centralized server on a remote location and there is a big number of
branches this operation can take some time.
This patch adds the configuration option git-p4.branchUser to allow filtering
the branch list by user. Although this limits the branch maintenance in Perforce
to be done by a single user, it might be an advantage when the number of
branches being used in a specific depot is very small when compared with the
branches available in the server.
Signed-off-by: Vitor Antunes <vitor.hda@gmail.com>
Acked-by: Pete Wyckoff <pw@padd.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When branch detection is enabled each branch is named in git after their
relative depot path in Perforce. To do this the depot paths are compared against
each other to find their common base path. The current algorithm makes this
comparison on a character by character basis.
Assuming we have the following branches:
//depot/branches/featureA
//depot/branches/featureB
Then the base depot path would be //depot/branches/feature, which is an invalid
depot path.
The current patch fixes this by splitting the path into a list and comparing the
list entries, making it choose correctly //depot/branches as the base path.
Signed-off-by: Vitor Antunes <vitor.hda@gmail.com>
Acked-by: Pete Wyckoff <pw@padd.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Delta base for blobs is chosen as a previously saved blob. If we
treat cat-blob's blob as a delta base for the next blob, nothing
is likely to become worse.
For fast-import stream producer like svn-fe cat-blob is used like
following:
- svn-fe reads file delta in svn format
- to apply it, svn-fe asks cat-blob 'svn delta base'
- applies 'svn delta' to the response
- produces a blob command to store the result
Currently there is no way for svn-fe to give fast-import a hint on
object delta base. While what's requested in cat-blob is most of
the time a best delta base possible. Of course, it could be not a
good delta base, but we don't know any better one anyway.
So do treat cat-blob's result as a delta base for next blob. The
profit is nice: 2x to 7x reduction in pack size AND 1.2x to 3x
time speedup due to diff_delta being faster on good deltas. git gc
--aggressive can compress it even more, by 10% to 70%, utilizing
more cpu time, real time and 3 cpu cores.
Tested on 213M and 2.7G fast-import streams, resulting packs are 22M
and 113M, import time is 7s and 60s, both streams are produced by
svn-fe, sniffed and then used as raw input for fast-import.
For git-fast-export produced streams there is no change as it doesn't
use cat-blob and doesn't try to reorder blobs in some smart way to
make successive deltas small.
Signed-off-by: Dmitry Ivankov <divanorama@gmail.com>
Acked-by: David Barr <davidbarr@google.com>
Acked-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
It's an interesting number, how often do we try to deltify each type of
objects and how often do we succeed. So do add it to stats.
Success doesn't mean much gain in pack size though. As we allow delta to
be as big as (data.len - 20). And delta close to data.len gains nothing
compared to no delta at all even after zlib compression (delta is pretty
much the same as data, just with few modifications).
We should try to make less attempts that result in huge deltas as these
consume more cpu than trivial small deltas. Either by choosing a better
delta base or reducing delta size upper bound or doing less delta attempts
at all.
Currently, delta base for blobs is a waste literally. Each blob delta
base is chosen as a previously stored blob. Disabling deltas for blobs
doesn't increase pack size and reduce import time, or at least doesn't
increase time for all fast-import streams I've tried.
Signed-off-by: Dmitry Ivankov <divanorama@gmail.com>
Acked-by: David Barr <davidbarr@google.com>
Acked-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
