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Some users or scripts will pipe "git diff"
output to "git apply" when replaying diffs
or commits. In these cases, they will rely
on the return value of "git apply" to know
whether the diff was applied successfully.
However, for empty commits, "git apply" will
fail. This complicates scripts since they
have to either buffer the diff and check
its length, or run diff again with "exit-code",
essentially doing the diff twice.
Add the "--allow-empty" flag to "git apply"
which allows it to handle both empty diffs
and empty commits created by "git format-patch
--always" by doing nothing and returning 0.
Add tests for both with and without --allow-empty.
Signed-off-by: Jerry Zhang <jerry@skydio.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When running `make hdr-check`, we got the following error messages:
apply.h:146:22: error: use of undeclared identifier 'GIT_MAX_HEXSZ'
char old_oid_prefix[GIT_MAX_HEXSZ + 1];
^
apply.h:147:22: error: use of undeclared identifier 'GIT_MAX_HEXSZ'
char new_oid_prefix[GIT_MAX_HEXSZ + 1];
^
apply.h:151:33: error: array has incomplete element type 'struct object_id'
struct object_id threeway_stage[3];
^
./strbuf.h:79:8: note: forward declaration of 'struct object_id'
struct object_id;
^
3 errors generated.
make: *** [apply.hco] Error 1
Include the missing "hash.h" header to fix these errors.
Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Make 'parse_git_header()' (renamed to 'parse_git_diff_header()') a
"public" function in apply.h, so we can re-use it in range-diff in a
subsequent commit. We're renaming the function to make it clearer in
other parts of the codebase that we're talking about a diff header and
not just any header.
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Code hygiene improvement for the header files.
* en/incl-forward-decl:
Remove forward declaration of an enum
compat/precompose_utf8.h: use more common include guard style
urlmatch.h: fix include guard
Move definition of enum branch_track from cache.h to branch.h
alloc: make allocate_alloc_state and clear_alloc_state more consistent
Add missing includes and forward declarations
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I looped over the toplevel header files, creating a temporary two-line C
program for each consisting of
#include "git-compat-util.h"
#include $HEADER
This patch is the result of manually fixing errors in compiling those
tiny programs.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We're moving away from the_index in this code. "struct index_state *"
could be added to struct apply_state. But let's aim long term and put
struct repository here instead so that we could even avoid more global
states in the future. The index will be available via
apply_state->repo->index.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Similar to 'git reset -N', this option makes 'git apply' automatically
mark new files as intent-to-add so they are visible in the following
'git diff' command and could also be committed with 'git commit -a'.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Similar to a previous patch, we do not need to use `newfd` to signal
that we have a lockfile to clean up. We can just unconditionally call
`rollback_lock_file`. If we do not hold the lock, it will be a no-op.
Where we check `newfd` to decide whether we need to take the lock, we
can instead use `is_lock_file_locked()`.
Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We have two users of `struct apply_state` and the related functionality
in apply.c. Each user sets up its `apply_state` by handing over a
pointer to its static `lock_file`. (Before 076aa2cbd (tempfile:
auto-allocate tempfiles on heap, 2017-09-05), we could never free
lockfiles, so making them static was a reasonable approach.)
Other than that, they never directly access their `lock_file`s, which
are instead handled by the functionality in apply.c.
To make life easier for the caller and to make it less tempting for a
future caller to mess with the lock, make apply.c fully responsible for
setting up the `lock_file`. As mentioned above, it is now safe to free a
`lock_file`, so we can make the `struct apply_state` contain an actual
`struct lock_file` instead of a pointer to one.
The user in builtin/apply.c is rather simple. For builtin/am.c, we might
worry that the lock state is actually meant to be inherited across
calls. But the lock is only taken as `apply_all_patches()` executes, and
code inspection shows that it will always be released.
Alternatively, we can observe that the lock itself is never queried
directly. When we decide whether we should lock, we check a related
variable `newfd`. That variable is not inherited, so from the point of
view of apply.c, the state machine really is reset with each call to
`init_apply_state()`. (It would be a bug if `newfd` and the lock status
were not in sync. The duplication of information in `newfd` and the lock
will be addressed in the next patch.)
Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Use a NULL-and-NUL check to see if we have a prefix and consistently use
C string functions on it instead of storing its length in a member of
struct apply_state. This avoids strlen() calls and simplifies the code.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Sometimes we want to apply in a different index file.
Before the apply functionality was libified it was possible to
use the GIT_INDEX_FILE environment variable, for this purpose.
But now, as the apply functionality has been libified, it should
be possible to do that in a libified way.
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Parsing `git apply` options can be useful to other commands that
want to call the libified apply functionality, because this way
they can easily pass some options from their own command line to
the libified apply functionality.
This will be used by `git am` in a following patch.
To make this possible, let's refactor the `git apply` option
parsing code into a new libified apply_parse_options() function.
Doing that makes it possible to remove some functions definitions
from "apply.h" and make them static in "apply.c".
Helped-by: Ramsay Jones <ramsay@ramsayjones.plus.com>
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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To avoid printing anything when applying with
`state->apply_verbosity == verbosity_silent`, let's save the
existing warn and error routines before applying, and let's
replace them with a routine that does nothing.
Then after applying, let's restore the saved routines.
Note that, as we need to restore the saved routines in all
cases, we cannot return early any more in apply_all_patches().
Helped-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This changes 'int apply_verbosely' into 'enum apply_verbosity', and
changes the possible values of the variable from a bool to
a tristate.
The previous 'false' state is changed into 'verbosity_normal'.
The previous 'true' state is changed into 'verbosity_verbose'.
The new added state is 'verbosity_silent'. It should prevent
anything to be printed on both stderr and stdout.
This is needed because `git am` wants to first call apply
functionality silently, if it can then fall back on 3-way merge
in case of error.
Printing on stdout, and calls to warning() or error() are not
taken care of in this patch, as that will be done in following
patches.
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Some parsing functions that were used in both "apply.c" and
"builtin/apply.c" are now only used in the former, so they
can be made static to "apply.c".
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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As most of the apply code in builtin/apply.c has been libified by a number of
previous commits, it can now be moved to apply.{c,h}, so that more code can
use it.
Helped-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Helped-by: Ramsay Jones <ramsay@ramsayjones.plus.com>
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The constants for the "inaccurate-eof" and the "recount" options will
be used in both "apply.c" and "builtin/apply.c", so they need to go
into "apply.h", and therefore they need a name that is more specific
to the API they belong to.
Helped-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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To libify `git apply` functionality we must make check_apply_state()
usable outside "builtin/apply.c".
Let's do that by moving it into "apply.c".
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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To libify `git apply` functionality we have to signal errors to the
caller instead of exit()ing.
To do that in a compatible manner with the rest of the error handling
in "builtin/apply.c", init_apply_state() should return -1 instead of
calling exit().
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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To libify `git apply` functionality we must make init_apply_state()
usable outside "builtin/apply.c".
Let's do that by moving it into a new "apply.c".
Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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To libify `git apply` functionality we must make 'struct apply_state'
usable outside "builtin/apply.c".
Let's do that by creating a new "apply.h" and moving
'struct apply_state' there.
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Jerry Zhang
Denton Liu
Thomas Gummerer
Junio C Hamano
Elijah Newren
Nguyễn Thái Ngọc Duy
Martin Ågren
René Scharfe
Christian Couder
Christian Couder