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1458fb56
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2022-01-29T07:18:26
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xdiff: include new xdiff from git
Update to the xdiff used in git v2.35.0, with updates to our build
configuration to ignore the sort of warnings that we normally care
about (signed/unsigned mismatch, unused, etc.)
Any git-specific abstraction bits are now redefined for our use in
`git-xdiff.h`. It is a (wildly optimistic) hope that we can use that
indirection layer to standardize on a shared xdiff implementation.
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379c4646
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2021-09-09T19:49:04
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Fix coding style for pointer
Make some syntax change to follow coding style.
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9830ab3d
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2020-01-29T02:00:04
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blame: add option to ignore whitespace changes
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c0486188
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2019-08-08T10:28:09
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blame_git: detect memory allocation errors
The code in "blame_git.c" was mostly imported from git.git with only
minor changes. One of these changes was to use our own allocators
instead of git's `xmalloc`, but there's a subtle difference: `xmalloc`
would abort the program if unable to allocate any memory, bit
`git__malloc` doesn't. As we didn't check for memory allocation errors
in some places, we might inadvertently dereference a `NULL` pointer in
out-of-memory situations.
Convert multiple functions to return proper error codes and add calls to
`GIT_ERROR_CHECK_ALLOC` to fix this.
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f673e232
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2018-12-27T13:47:34
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git_error: use new names in internal APIs and usage
Move to the `git_error` name in the internal API for error-related
functions.
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168fe39b
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2018-11-28T14:26:57
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object_type: use new enumeration names
Use the new object_type enumeration names within the codebase.
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75203d03
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2018-03-16T11:18:02
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blame_git: fix coalescing step never being executed
Since blame has been imported from git.git and had its first share of
refactorings in b6f60a4d9 (Clean up ported code, 2013-09-21), the code
is actually not doing the coalescing step of the generated blame. While
the code to do the coalescing does exist, it is never being called as
the function `git_blame__like_git` will directly return from its `while
(true)` loop.
The function that was being imported from git.git was the `assign_blame`
function from "builtin/blame.c" from 717d1462b (git-blame --incremental,
2007-01-28), which hasn't really changed much. Upon taking an initial
look, one can seet hat `coalesce` is actually never getting called in
`assign_blame`, as well, so one may assume that not calling `coalesce`
by accident is actually the right thing. But it is not, as `coalesce` is
being called ever since cee7f245d (git-pickaxe: blame rewritten.,
2006-10-19) after the blame has been done in the caller of
`assign_blame`. Thus we can conclude the code of libgit2 is actually
buggy since forever.
To fix the issue, simply break out of the loop instead of doing a direct
return. Note that this does not alter behaviour in any way visible to
our tests, which is unfortunate. But in order to not diverge from what
git.git does, I'd rather adapt to how it is being done upstream in order
to avoid breaking certain edge cases than to just remove that code.
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0c7f49dd
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2017-06-30T13:39:01
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Make sure to always include "common.h" first
Next to including several files, our "common.h" header also declares
various macros which are then used throughout the project. As such, we
have to make sure to always include this file first in all
implementation files. Otherwise, we might encounter problems or even
silent behavioural differences due to macros or defines not being
defined as they should be. So in fact, our header and implementation
files should make sure to always include "common.h" first.
This commit does so by establishing a common include pattern. Header
files inside of "src" will now always include "common.h" as its first
other file, separated by a newline from all the other includes to make
it stand out as special. There are two cases for the implementation
files. If they do have a matching header file, they will always include
this one first, leading to "common.h" being transitively included as
first file. If they do not have a matching header file, they instead
include "common.h" as first file themselves.
This fixes the outlined problems and will become our standard practice
for header and source files inside of the "src/" from now on.
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756138e4
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2017-03-28T09:15:53
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blame_git: check return value of `git__calloc`
We do not check the return value of `git__calloc`, which may return
`NULL` in out-of-memory situations. Fix the error by using
`GITERR_CHECK_ALLOC`.
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4004d68f
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2017-03-24T08:36:12
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blame_git: remove spuriuous goto
The recent addition of an error code to `pass_whole_blame` in ff8d2eb15
(blame_git: check return value of object lookup, 2017-03-20) introduced
a spurious goto. Remove it.
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ff8d2eb1
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2017-03-20T09:34:25
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blame_git: check return value of object lookup
The function `pass_whole_blame` performs an object lookup but does not
check if the lookup actually succeeds. Convert the function to return an
error code and check for it in the calling function.
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21766702
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2016-06-27T15:20:20
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blame: do not decrement commit refcount in make_origin
When we create a blame origin, we try to look up the blob that is
to be blamed at a certain revision. When this lookup fails, e.g.
because the file did not exist at that certain revision, we fail
to create the blame origin and return `NULL`. The blame origin
that we have just allocated is thereby free'd with
`origin_decref`.
The `origin_decref` function does not only decrement reference
counts for the blame origin, though, but also for its commit and
blob. When this is done in the error case, we will cause an
uneven reference count for these objects. This may result in
hard-to-debug failures at seemingly unrelated code paths, where
we try to access these objects when they in fact have already
been free'd.
Fix the issue by refactoring `make_origin` such that we only
allocate the object after the only function that may fail so that
we do not have to call `origin_decref` at all. Also fix the
`pass_blame` function, which indirectly calls `make_origin`, to
free the commit when `make_origin` failed.
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8a4a343a
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2016-03-10T16:33:49
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blame_git: handle error returned by `git_commit_parent`
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944dbd12
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2015-11-24T10:52:17
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blame: use size_t for line counts in git_blame__entry
The `git_blame__entry` struct keeps track of line counts with
`int` fields. Since `int` is only guaranteed to be at least 16
bits we may overflow on certain platforms when line counts exceed
2^15.
Fix this by instead storing line counts in `size_t`.
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ae195a71
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2015-09-29T12:46:41
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blame: guard xdiff calls for large files
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234ca40a
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2015-07-07T16:46:48
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xdiff: upgrade to core git 2.4.5
Upgrade xdiff to version used in core git 2.4.5 (0df0541).
Corrects an issue where an LF is added at EOF while applying
an unrelated change (ba31180), cleans up some unused code (be89977 and
e5b0662), and provides an improved callback to avoid leaking internal
(to xdiff) structures (467d348).
This also adds some additional functionality that we do not yet take
advantage of, namely the ability to ignore changes whose lines are
all blank (36617af).
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f1453c59
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2015-02-12T12:19:37
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Make our overflow check look more like gcc/clang's
Make our overflow checking look more like gcc and clang's, so that
we can substitute it out with the compiler instrinsics on platforms
that support it. This means dropping the ability to pass `NULL` as
an out parameter.
As a result, the macros also get updated to reflect this as well.
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392702ee
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2015-02-09T23:41:13
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allocations: test for overflow of requested size
Introduce some helper macros to test integer overflow from arithmetic
and set error message appropriately.
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0276f0f5
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2014-02-26T19:22:19
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Reset num_parents to 1 only for merge commits
Also, correct test case to account for the boundary flag
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c7c83394
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2014-02-21T00:22:07
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Add option to limit blame to first parent
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aad5403f
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2013-11-05T10:55:54
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Fix MSVC 64-bit warnings
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7dcb1c45
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2013-10-28T11:21:23
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Adjust for diff API changes
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a7d28f40
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2013-10-28T05:22:37
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:heart: bool
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49781a03
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2013-09-25T14:40:19
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Blame: minor cleanup
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b6f60a4d
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2013-09-21T22:02:23
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Clean up ported code
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0a0f0558
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2013-09-20T15:51:22
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git_blame is a scoreboard
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a121e580
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2013-09-20T15:20:03
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Add typedefs for internal structs
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25c47aae
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2013-09-20T14:31:51
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Detect boundaries, support limiting commit range
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0afe9996
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2013-09-17T16:46:27
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Check errors from libgit2 calls
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ceab4e26
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2013-09-16T16:20:38
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Port blame from git.git
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