Russell Belfer [Mon, 5 Mar 2012 17:30:17 +0000 (09:30 -0800)]
Convert from strnlen to git_text_is_binary
Since strnlen is not supported on all platforms and since we
now have the shiny new git_text_is_binary in the filtering
code, let's convert diff binary detection to use the new stuff.
Russell Belfer [Thu, 1 Mar 2012 19:45:00 +0000 (11:45 -0800)]
Revert GIT_STATUS constants to avoid issues
This reverts the changes to the GIT_STATUS constants and adds a
new enumeration to describe the type of change in a git_diff_delta.
I don't love this solution, but it should prevent strange errors
from occurring for now. Eventually, I would like to unify the
various status constants, but it needs a larger plan and I just
wanted to eliminate this breakage quickly.
Russell Belfer [Wed, 29 Feb 2012 20:04:59 +0000 (12:04 -0800)]
Clean up GIT_UNUSED macros on all platforms
It turns out that commit 31e9cfc4cbcaf1b38cdd3dbe3282a8f57e5366a5
did not fix the GIT_USUSED behavior on all platforms. This commit
walks through and really cleans things up more thoroughly, getting
rid of the unnecessary stuff.
To remove the use of some GIT_UNUSED, I ended up adding a couple
of new iterators for hashtables that allow you to iterator just
over keys or just over values.
In making this change, I found a bug in the clar tests (where we
were doing *count++ but meant to do (*count)++ to increment the
value). I fixed that but then found the test failing because it
was not really using an empty repo. So, I took some of the code
that I wrote for iterator testing and moved it to clar_helpers.c,
then made use of that to make it easier to open fixtures on a
per test basis even within a single test file.
Russell Belfer [Wed, 29 Feb 2012 00:14:47 +0000 (16:14 -0800)]
Update diff to use iterators
This is a major reorganization of the diff code. This changes
the diff functions to use the iterators for traversing the
content. This allowed a lot of code to be simplified. Also,
this moved the functions relating to outputting a diff into a
new file (diff_output.c).
This includes a number of other changes - adding utility
functions, extending iterators, etc. plus more tests for the
diff code. This also takes the example diff.c program much
further in terms of emulating git-diff command line options.
Russell Belfer [Tue, 14 Feb 2012 01:29:30 +0000 (17:29 -0800)]
First pass of diff index to workdir implementation
This is an initial version of git_diff_workdir_to_index. It
also includes renaming some structures and some refactoring
of the existing code so that it could be shared better with
the new function.
This is not complete since it needs a rebase to get some
new odb functions from the upstream branch.
Russell Belfer [Tue, 7 Feb 2012 23:30:18 +0000 (15:30 -0800)]
Add tests and fix bugs for diff whitespace options
Once I added tests for the whitespace handling options of
diff, I realized that there were some bugs. This fixes
those and adds the new tests into the test suite.
Russell Belfer [Tue, 7 Feb 2012 20:14:28 +0000 (12:14 -0800)]
Continue implementation of git-diff
* Implemented git_diff_index_to_tree
* Reworked git_diff_options structure to handle more options
* Made most of the options in git_diff_options actually work
* Reorganized code a bit to remove some redundancy
* Added option parsing to examples/diff.c to test most options
Russell Belfer [Sat, 4 Feb 2012 01:05:05 +0000 (17:05 -0800)]
Fix minor WIN32 incompatibility
File mode flags are not all defined on WIN32, but since git
is so rigid in how it uses file modes, there is no reason not
to hard code a particular value. Also, this is only used in
the git_diff_print_compact helper function, so it is really
really not important.
Russell Belfer [Sat, 4 Feb 2012 00:53:01 +0000 (16:53 -0800)]
Clean up diff implementation for review
This fixes several bugs, updates tests and docs, eliminates the
FILE* assumption in favor of printing callbacks for the diff patch
formatter helpers, and adds a "diff" example function that can
perform a diff from the command line.
Russell Belfer [Fri, 3 Feb 2012 02:03:43 +0000 (18:03 -0800)]
Implement diff lists and formatters
This reworks the diff API to separate the steps of producing
a diff descriptions from formatting the diff. This will allow
us to share diff output code with the various diff creation
scenarios and will allow us to implement rename detection as
an optional pass that can be run on a diff list.
Russell Belfer [Fri, 27 Jan 2012 19:29:25 +0000 (11:29 -0800)]
Initial implementation of git_diff_blob
This gets the basic plumbing in place for git_diff_blob.
There is a known issue where additional parameters like
the number of lines of context to display on the diff
are not working correctly (which leads one of the new
unit tests to fail).
Russell Belfer [Tue, 24 Jan 2012 22:06:42 +0000 (14:06 -0800)]
Simplify GIT_UNUSED macros
Since casting to void works to eliminate errors with unused
parameters on all platforms, avoid the various special cases.
Over time, it will make sense to eliminate the GIT_UNUSED
macro completely and just have GIT_UNUSED_ARG.
Vicent Martí [Fri, 2 Mar 2012 02:51:45 +0000 (03:51 +0100)]
attr: Change the attribute check macros
The point of having `GIT_ATTR_TRUE` and `GIT_ATTR_FALSE` macros is to be
able to change the way that true and false values are stored inside of
the returned gitattributes value pointer.
However, if these macros are implemented as a simple rename for the
`git_attr__true` pointer, they will always be used with the `==`
operator, and hence we cannot really change the implementation to any
other way that doesn't imply using special pointer values and comparing
them!
We need to do the same thing that core Git does, which is using a
function macro. With `GIT_ATTR_TRUE(attr)`, we can change
internally the way that these values are stored to anything we want.
This commit does that, and rewrites a large chunk of the attributes test
suite to remove duplicated code for expected attributes, and to
properly test the function macro behavior instead of comparing
pointers.
Ryan Wilcox [Thu, 1 Mar 2012 13:31:50 +0000 (08:31 -0500)]
introduced new function: git_remote_supported_url() <-- returns true if this version of libgit2 supports the correct transport mechanism for a URL or path
revwalk: add convenience function to push/hide HEAD
It's not unusual to want the walker to act on HEAD, so add a
convencience function for the case that the user doesn't already have
a resolved HEAD reference.
git_revwalk_{push,hide}_glob() lets you push the OIDs of references
that match the specified glob. This is the basics for what git.git
does with the rev-list options --branches, --tags, --remotes and
--glob.
Vicent Martí [Mon, 27 Feb 2012 03:31:05 +0000 (04:31 +0100)]
filter: Apply filters before writing a file to the ODB
Initial implementation. The relevant code is in `blob.c`: the blob write
function has been split into smaller functions.
- Directly write a file to the ODB in streaming mode
- Directly write a symlink to the ODB in direct mode
- Apply a filter, and write a file to the ODB in direct mode
When trying to write a file, we first call `git_filter__load_for_file`,
which populates a filters array with the required filters based on the
filename.
If no filters are resolved to the filename, we can write to the ODB in
streaming mode straight from disk. Otherwise, we load the whole file in
memory and use double-buffering to apply the filter chain. We finish
by writing the file as a whole to the ODB.
Vicent Martí [Mon, 27 Feb 2012 03:28:31 +0000 (04:28 +0100)]
buffer: Unify `git_fbuffer` and `git_buf`
This makes so much sense that I can't believe it hasn't been done
before. Kill the old `git_fbuffer` and read files straight into
`git_buf` objects.
Also: In order to fully support 4GB files in 32-bit systems, the
`git_buf` implementation has been changed from using `ssize_t` for
storage and storing negative values on allocation failure, to using
`size_t` and changing the buffer pointer to a magical pointer on
allocation failure.
config: correctly deal with setting a multivar with regex where there are no matches
We used to erroneously consider "^$" as a special case for appending a
value to a multivar. This was a misunderstanding and we should always
append a value if there are no existing values that match.
While we're in the area, replace all the variables in-memory in one
swoop and then replace them on disk so as to avoid matching a value
we've just introduced.
We used to consider it an error if a remote didn't have at least a
fetch refspec. This was too much checking, as a remote doesn't in fact
need to have anything other than an URL configured to be considered
a remote.
Paul Betts [Fri, 24 Feb 2012 01:11:20 +0000 (17:11 -0800)]
Ensure that commits don't fail if committing content that already exists
Making a commit that results in a blob that already exists in the ODB (i.e.
committing something, then making a revert commit) will result in us trying
to p_rename -> MoveFileExW a temp file into the existing ODB entry. Despite
the MOVEFILE_REPLACE_EXISTING flag is passed in, Win32 does not care and
fails it with STATUS_ACCESS_DENIED.
To fix this, we p_unlink the ODB entry before attempting to rename it. This
call will typically fail, but we don't care, we'll let the p_rename fail if
the file actually does exist and we couldn't delete it for some reason (ACLs,
etc).
Russell Belfer [Wed, 22 Feb 2012 23:15:35 +0000 (15:15 -0800)]
Fix iterators based on pull request feedback
This update addresses all of the feedback in pull request #570.
The biggest change was to create actual linked list stacks for
storing the tree and workdir iterator state. This cleaned up
the code a ton. Additionally, all of the static functions had
their 'git_' prefix removed, and a lot of other unnecessary
changes were removed from the original patch.
Russell Belfer [Wed, 22 Feb 2012 19:22:33 +0000 (11:22 -0800)]
Iterator improvements from diff implementation
This makes two changes to iterator behavior: first, advance
can optionally do the work of returning the new current value.
This is such a common pattern that it really cleans up usage.
Second, for workdir iterators, this removes automatically
iterating into directories. That seemed like a good idea,
but when an entirely new directory hierarchy is introduced
into the workdir, there is no reason to iterate into it if
there are no corresponding entries in the tree/index that it
is being compared to.
This second change actually wasn't a lot of code because not
descending into directories was already the behavior for
ignored directories. This just extends that to all directories.
Russell Belfer [Tue, 21 Feb 2012 22:46:24 +0000 (14:46 -0800)]
Uniform iterators for trees, index, and workdir
This create a new git_iterator type of object that provides a
uniform interface for iterating over the index, an arbitrary
tree, or the working directory of a repository.
As part of this, git ignore support was extended to support
push and pop of directory-based ignore files as the working
directory is being traversed (so the array of ignores does
not have to be recreated at each directory during traveral).
There are a number of other small utility functions in buffer,
path, vector, and fileops that are included in this patch
that made the iterator implementation cleaner.
Vicent Martí [Wed, 15 Feb 2012 15:56:56 +0000 (16:56 +0100)]
zlib: Remove custom `git2/zlib.h` header
This is legacy compat stuff for when `deflateBound` is not defined, but
we're not embedding zlib and that function is always available. Kill
that with fire.