As described in Bug 328551 there was a bug that the merge algorithm
was not always reporting conflicts when the same line was deleted
and modified. This problem was introduced during commit
0c017188b4 when reported conflicts have
been checked for common pre- and suffixes.
This was fixed here by better determining whether after stripping
off common prefixes and suffixes from a conflicting region there
is still some conflicting part left.
I also added a unit test to test this situation.
Bug: 328551
Change-Id: Iec6c9055d00e5049938484a27ab98dda2577afc4
Signed-off-by: Christian Halstrick <christian.halstrick@sap.com>
When creating a local branch based on another local branch, the
upstream configuration contains "." as origin and the source branch
as "merge". The PullCommand should support this by skipping the
fetch step altogether and use the base branch to merge with.
Change-Id: I260a1771aeeffca5b0161d1494fd63c672ecc2a6
Signed-off-by: Mathias Kinzler <mathias.kinzler@sap.com>
AmbiguousObjectException contains an AbbreviatedObjectId and is
supposed to be serializable, so it should be serializable as well.
Change-Id: I8056e78aee20fdd3cb9600b52cd8ed988544293d
It's probably not possible that these numbers are negative in the
algorithm, but it's cleaner this way and gets rid of three more
FindBugs warnings.
Change-Id: Ifbce4e2c787fb9a7cd309c605e8d86211ef8a352
Don't permit transient worker threads to access the underlying output
stream of a ProgressMonitor, as they might get marked as the stream's
writer thread. Instead proxy update events from the workers back onto
the application's real work thread. This ensures that the stream only
sees a single thread, and its the thread that will remain alive for
the entire life cycle of the operation.
This fixes IOException("Write end dead") during local repository fetch
when threaded delta search is enabled. One of the transient delta
search threads became the designated writer for the pipe, and when it
terminated the reader end thought the writer was dead, even though the
main writer thread was still executing in PackWriter.
Bug: 326557
Change-Id: I01d1b20a3d7be1c0b480c7fb5c9773c161fe5c15
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
RefsDirectory fires a RefsChangedEvent when it detect that one
ref changed (new, modified, deleted). But there was a potential
of wrong events beeing fired leading to a endless loop in EGit.
Problem is that when calling getRefs(ALL) we don't want to report
additional refs and by that we remove the additional refs from
the list of "refs reported upwards last time". We fire an
RefsChangedEvent because we think that the special refs are not
there anymore.
I fixed this by removing eventing for the additional refs. Another
alternative would be to always scan also for additional refs and
put them in the list of refs. But getRefs(ALL) would then remove
the additional refs again. I didn't do that for performance reasons
and also because I am not sure whether we want evnting for
additional refs.
Change-Id: Icb9398b55a8c6bbf03e38f6670feb67754ce91e0
Signed-off-by: Christian Halstrick <christian.halstrick@sap.com>
When checking out a tree, files that are identical to the file in
the current index and working directory don't need to be updated.
Change-Id: I9e025a53facd42410796eae821baaeff684a25c5
Signed-off-by: Chris Aniszczyk <caniszczyk@gmail.com>
IndexDiff now allows to set an additional filter. This can be used
e.g. for restricting the tree walk to a given set of files.
Change-Id: I642de17e74b997fa0c5878c90631f6640ed70bdd
Signed-off-by: Jens Baumgart <jens.baumgart@sap.com>
The RefDirectory class was not returning FETCH_HEAD and
MERGE_HEAD when trying to get all refs via getRefs(RefDatabase.ALL).
This fix adds constants for FETCH_HEAD and ORIG_HEAD and adds a
new getter getAdditionalRefs() to get these additional refs.
To be compatible with c git the getRefs(ALL) method will not return
FETCH_HEAD, MERGE_HEAD and ORIG_HEAD.
Change-Id: Ie114ca92e9d5e7d61d892f4413ade65acdc08c32
Signed-off-by: Christian Halstrick <christian.halstrick@sap.com>
We need to use findbugs-maven-plugin:2.3.2-SNAPSHOT
since otherwise build fails with maven-3.0 [1], [2].
We should switch to the release version as soon
as this becomes available.
[1] http://www.sonatype.com/people/2010/10/maven-3-0-has-landed/
[2] http://jira.codehaus.org/browse/MFINDBUGS-122
Bug: 327799
Change-Id: I1c57f81cf6f0450e56411881488c4ee754e458e3
Signed-off-by: Chris Aniszczyk <caniszczyk@gmail.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
If an object hasn't been accessed yet the pack list for a repository
may not have been scanned from disk. If an application (e.g. the dumb
transport servlet support code) asks for the pack list for an
ObjectDirectory, we should load it immediately.
Change-Id: I93d7b1bca422d905948e8e83b2afa83c8894a68b
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
If an ObjectInserter is created from a CachedObjectDirectory, we need
to ensure the cache is updated whenever a new loose object is actually
added to the loose objects directory, otherwise a future read from an
ObjectReader on the CachedObjectDirectory might not be able to open
the newly created object.
We mostly had the infrastructure in place to implement this due to the
injection of unpacked large deltas, but we didn't have a way to pass
the ObjectId from ObjectDirectoryInserter to CachedObjectDirectory,
because the inserter was using the underlying ObjectDirectory and not
the CachedObjectDirectory. Redirecting to CachedObjectDirectory
ensures the cache is updated.
Change-Id: I1f7bdfacc7ad77ebdb885f655e549cc570652225
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
These messages may need to change depending on the current
thread's configured locale, and thus cannot be static.
Change-Id: I96751a63852ec9c4bf6c47edadcf8752700543df
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
There was a chance that we hit a NPE which doing a checkout
with DirCacheCheckout when there is no HEAD (e.g. initial
checkout). This is fixed here.
Change-Id: Ie3b8cae21dcd90ba8352823ea94a700f8ee9221a
Signed-off-by: Christian Halstrick <christian.halstrick@sap.com>
Implemented the initial version of a cherry-pick command.
A correct error handling is missing (what happens if the
checkout fails, the cherry-pick leads to conflicts etc).
But straightforward cherry-picks works.
Change-Id: I235c0eb3a7a2d5bdfe40400f1deed06f29d746e1
Signed-off-by: Christian Halstrick <christian.halstrick@sap.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
These routines can be useful when debugging, because we can add an
expression to the Eclipse "Expressions" panel to show the text that
appears on a line. Gerrit Code Review also uses these in its own
subclass of RawText in order to format patch files, so pulling it up
to be part of core JGit may help other applications too.
Change-Id: I20a6b112e3403ecfc1c2715ae75dcecc1a85b167
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Since the introduction of HashedSequence we no longer need to supply
the RawTextComparator at the time of constructing a RawText. Drop the
definition from the constructor, because it doesn't make sense as part
of our public API.
Change-Id: Iaab34611d60eee4a2036830142b089b2dae81842
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
When an empty line was inserted at the beginning of the common end
part of a RawText the comparator incorrectly considered it to be
common, which meant the DiffAlgorithm would later not even have it be
part of the region it examines. This would cause JGit to skip a line
of insertion, which later confused Gerrit Code Review when it tried to
match up the pre and post RawText files for a difference that had this
type of insertion.
Define two new unit tests to check for this insertion of a blank line
condition and correct for it by removing the LF from the common region
when the condition is detected.
Change-Id: I2108570eb2929803b9a56f9fb9c400c758e7156b
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
The maven 2 build for jgit source bundle didn't create a correct
OSGi version string, instead of
org.eclipse.jgit.source_0.10.0.<timestamp>
the generated OSGi version was
org.eclipse.jgit.source_0.10.0.SNAPSHOT
This caused trouble when trying to install it from p2 repository.
Bug: 327616
Change-Id: Ic27c763ae9a4bcbb5bd6ed9562cd98bb4da3386b
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
It wrongly uses the full name of the branch to remove the
configuration entries but must use the shortened one.
Change-Id: Ie386a128a6c6beccc20bafd15c2e36254c5f560d
Signed-off-by: Mathias Kinzler <mathias.kinzler@sap.com>
When creating a branch with CreateBranchCommand.call() without
specifying an explicit startPoint HEAD should be used as startPoint.
There was a bug leading to an NPE in such a case.
Change-Id: Ic0a5dc1f33a0987d66c09996c8012c45785500ff
Signed-off-by: Christian Halstrick <christian.halstrick@sap.com>
There was a wrong javadoc comment telling that MergeCommand
only supports fast-forward merges. This has been fixed.
Change-Id: I7edea779a83528beee34a1753026288c384881ce
Signed-off-by: Christian Halstrick <christian.halstrick@sap.com>
We wanted to wrap all LowLevel JGit excpetions into a
JGitInternalException so that users of this high-level interface
don't have to explicitly catch all of them. This
was forgotten on BranchCreateCommand.call() and I added
it.
Change-Id: Ie140e99574fb004137c66e80fb92eb6c6d0fa5e1
Signed-off-by: Christian Halstrick <christian.halstrick@sap.com>
HistogramDiff outperforms it for any case where PatienceDiff needs to
fallback to another algorithm. Consequently it's not worth keeping
around, because we would always want a fallback enabled.
Change-Id: I39b99cb1db4b3be74a764dd3d68cd4c9ecd91481
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Its behavior is similar to PatienceDiff, and runs nearly as fast,
often beating the performance of MyersDiff.
Change-Id: I43c3faefa8109f1a68ef57522bec9cf27b5df252
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Large objects stored as deltas get unpacked by JGit into a loose
object, so they are cheaper to access later on. This unpacking was
broken because TeeInputStream copied the wrong length into the loose
object, sometimes copying too many bytes into the result. This
created a loose object that did not have the correct content, and
whose length did not match the length denoted in the object header.
Change-Id: I3ce1fd9f3dc5bd195249c7872b3bec49570424a2
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
When passing to a fallback algorithm, we can avoid creating a new copy
of the hash codes for each sequence by passing in the hashed sequences
directly. This makes it cheaper to switch from HistogramDiff down to
MyersDiff in a single pass.
Change-Id: Ibf2e81be57c083862eeb134279aed676653bf9b5
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
There is a corner case where we get an EMPTY region during recursion,
but we didn't expect to receive that. Its harmless to ignore the
region since the region is empty and has no content, so do so rather
than throwing an exception
Change-Id: I50dcec81ecba763072bb739adfab5879fb48b23a
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Certain inputs caused an infinite loop because the prior match data
couldn't be used as expected. Rather than incrementing the match
pointer before looking at an element, do it after, so the loop breaks
when we wrap around to the starting point.
Change-Id: Ieab28bb3485a914eeddc68aa38c256f255dd778c
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
The need for branching becomes more pressing with pull
support: we need to make sure the upstream configuration entries
are written correctly when creating and renaming branches
(and of course are cleaned up when deleting them).
This adds support for listing, adding, deleting and renaming
branches including the more common options.
Bug: 326938
Change-Id: I00bcc19476e835d6fd78fd188acde64946c1505c
Signed-off-by: Mathias Kinzler <mathias.kinzler@sap.com>
Signed-off-by: Chris Aniszczyk <caniszczyk@gmail.com>
In bug 323571 it is mentioned that if you call
'toURI().toURL().toString()' on a java.io.File you cannot pass
that string to jgit as an URIish. Problem is that the passed
URI looks like 'file:/C:/a/b.txt' and that we where expecting
double slashes after scheme':'. This fix adds support for this
single-slash file URLs.
Bug: 323571
Change-Id: I866a76a4fcd0c3b58e0d26a104fc4564e7ba5999
Signed-off-by: Christian Halstrick <christian.halstrick@sap.com>
This is the minimal implementation of a "Pull" command. It does not
have any parameters besides the generic progress monitor and timeout.
It works on the currently checked-out branch and assumes that the
configuration contains the keys "branch.<branch name>.remote" and
"branch.<branch name>.merge" to determine the remote configuration
for the fetch and the remote branch name for the merge.
Bug: 303404
Change-Id: I7fe09029996d0cfc09a7d8f097b5d6af1488fa93
Signed-off-by: Mathias Kinzler <mathias.kinzler@sap.com>
Signed-off-by: Chris Aniszczyk <caniszczyk@gmail.com>
There where quite some bugs regarding wrong URI parsing. In order
to solve them the parsing has to be refactored. We now have
specialized regexps for 'scheme://host/...', scp URIs and local
file names. Now we can detect problems while parsing 'git://host:/abc' which
was previously not possible.
Bug: 315571
Bug: 292897
Bug: 307017
Bug: 323571
Bug: 317388
Change-Id: If72576576ebb6b9d9dc8b7e51ddd87c9909e8b62
Signed-off-by: Christian Halstrick <christian.halstrick@sap.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
The regular expression which should handle the
user/password part in an URI was potentially
processing too many chars. This led to problems
when user/pwd and port was specified
Change-Id: I87db02494c4b367283e1d00437b1c06d2c8fdd28
Signed-off-by: Christian Halstrick <christian.halstrick@sap.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
The regular expressions used to parse URI's are constructed by
concatenating different segments to a big String. Introduce
String constants for these segements and document them.
Change-Id: If8b9dbaaf57ca333ac0b6c9610c3d3a515c540f9
Signed-off-by: Christian Halstrick <christian.halstrick@sap.com>
Some strings were not externalized. Also use them in HTTP tests to
ensure that they will also succeed when message bundles are
translated.
Change-Id: Id02717176557e7d57e676e1339cd89f2be88d330
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
The strings used to construct the regex to parse
URIs are split differently. This makes it easier
to introduce meaningful String constants later on.
Change-Id: I9355fd42e57e0983204465c5d6fe5b6b93655074
Signed-off-by: Christian Halstrick <christian.halstrick@sap.com>
Projects like org.eclipse.mdt contain large XML files about 6 MiB
in size. So does the Android project platform/frameworks/base.
Doing a clone of either project with JGit takes forever to checkout
the files into the working directory, because delta decompression
tends to be very expensive as we need to constantly reposition the
base stream for each copy instruction. This can be made worse by
a very bad ordering of offsets, possibly due to an XML editor that
doesn't preserve the order of elements in the file very well.
Increasing the threshold to the same limit PackWriter uses when
doing delta compression (50 MiB) permits a default configured
JGit to decompress these XML file objects using the faster
random-access arrays, rather than re-seeking through an inflate
stream, significantly reducing checkout time after a clone.
Since this new limit may be dangerously close to the JVM maximum
heap size, every allocation attempt is now wrapped in a try/catch
so that JGit can degrade by switching to the large object stream
mode when the allocation is refused. It will run slower, but the
operation will still complete.
The large stream mode will run very well for big objects that aren't
delta compressed, and is acceptable for delta compressed objects that
are using only forward referencing copy instructions. Copies using
prior offsets are still going to be horrible, and there is nothing
we can do about it except increase core.streamFileThreshold.
We might in the future want to consider changing the way the delta
generators work in JGit and native C Git to avoid prior offsets once
an object reaches a certain size, even if that causes the delta
instruction stream to be slightly larger. Unfortunately native
C Git won't want to do that until its also able to stream objects
rather than malloc them as contiguous blocks.
Change-Id: Ief7a3896afce15073e80d3691bed90c6a3897307
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Chris Aniszczyk <caniszczyk@gmail.com>
Natively support the HTTP basic and digest authentication methods
by setting the Authorization header without going through the JREs
java.net.Authenticator API. The Authenticator API is difficult to
work with in a multi-threaded server environment, where its using
a singleton for the entire JVM. Instead compute the Authorization
header from the URIish user and pass, if available.
Change-Id: Ibf83fea57cfb17964020d6aeb3363982be944f87
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
As findbugs pointed out, there was a small risk for creating multiple instances of
translation bundles. If that happens, drop the second instance.
Change-Id: I3aacda86251d511f6bbc2ed7481d561449ce3b6c
Signed-off-by: Robin Rosenberg <robin.rosenberg@dewire.com>
HistogramDiff is an alternative implementation of patience diff,
performing a search over all matching locations and picking the
longest common subsequence that has the lowest occurrence count.
If there are unique common elements, its behavior is identical to
that of patience diff.
Actual performance on real-world source files usually beats
MyersDiff, sometimes by a factor of 3, especially for complex
comparators that ignore whitespace.
Change-Id: I1806cd708087e36d144fb824a0e5ab7cdd579d73
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Robin Stocker
Christian Halstrick
Mathias Kinzler
Shawn O. Pearce
Lluis Sanchez
Jens Baumgart
Matthias Sohn
Chris Aniszczyk
Robin Rosenberg