When parsing "index" lines from a git-diff, we look for a
space followed by the mode. If we don't have a space, then
we set our pointer to the end-of-line. However, we don't
double-check that our end-of-line pointer is valid (e.g., if
we got a truncated diff input), which could lead to some
wrap-around pointer arithmetic.
In most cases this would probably get caught by our "40 <
len" check later in the function, but to be on the safe
side, let's just use strchrnul to treat end-of-string the
same as end-of-line.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Use xmemdupz() to allocate the memory, copy the data and make sure to
NUL-terminate the result, all in one step. The resulting code is
shorter, doesn't contain the constants 1 and '\0', and avoids
duplicating function parameters.
For blame, the last copied byte (o->file.ptr[o->file.size]) is always
set to NUL by fake_working_tree_commit() or read_sha1_file(), so no
information is lost by the conversion to using xmemdupz().
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
An experiment to use two files (the base file and incremental
changes relative to it) to represent the index to reduce I/O cost
of rewriting a large index when only small part of the working tree
changes.
* nd/split-index: (32 commits)
t1700: new tests for split-index mode
t2104: make sure split index mode is off for the version test
read-cache: force split index mode with GIT_TEST_SPLIT_INDEX
read-tree: note about dropping split-index mode or index version
read-tree: force split-index mode off on --index-output
rev-parse: add --shared-index-path to get shared index path
update-index --split-index: do not split if $GIT_DIR is read only
update-index: new options to enable/disable split index mode
split-index: strip pathname of on-disk replaced entries
split-index: do not invalidate cache-tree at read time
split-index: the reading part
split-index: the writing part
read-cache: mark updated entries for split index
read-cache: save deleted entries in split index
read-cache: mark new entries for split index
read-cache: split-index mode
read-cache: save index SHA-1 after reading
entry.c: update cache_changed if refresh_cache is set in checkout_entry()
cache-tree: mark istate->cache_changed on prime_cache_tree()
cache-tree: mark istate->cache_changed on cache tree update
...
* jk/xstrfmt:
setup_git_env(): introduce git_path_from_env() helper
unique_path: fix unlikely heap overflow
walker_fetch: fix minor memory leak
merge: use argv_array when spawning merge strategy
sequencer: use argv_array_pushf
setup_git_env: use git_pathdup instead of xmalloc + sprintf
use xstrfmt to replace xmalloc + strcpy/strcat
use xstrfmt to replace xmalloc + sprintf
use xstrdup instead of xmalloc + strcpy
use xstrfmt in favor of manual size calculations
strbuf: add xstrfmt helper
"--ignore-space-change" option of "git apply" ignored the spaces
at the beginning of line too aggressively, which is inconsistent
with the option of the same name "diff" and "git diff" have.
* jc/apply-ignore-whitespace:
apply --ignore-space-change: lines with and without leading whitespaces do not match
A submodule diff generally has content like:
-Subproject commit [0-9a-f]{40}
+Subproject commit [0-9a-f]{40}
When we are using "git apply --index" with a submodule, we
first apply the textual diff, and then parse that result to
figure out the new sha1.
If the diff has bogus input like:
-Subproject commit 1234567890123456789012345678901234567890
+bogus
we will parse the "bogus" portion. Our parser assumes that
the buffer starts with "Subproject commit", and blindly
skips past it using strlen(). This can cause us to read
random memory after the buffer.
This problem was unlikely to have come up in practice (since
it requires a malformed diff), and even when it did, we
likely noticed the problem anyway as the next operation was
to call get_sha1_hex on the random memory.
However, we can easily fix it by using skip_prefix to notice
the parsing error.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
It's easy to get manual allocation calculations wrong, and
the use of strcpy/strcat raise red flags for people looking
for buffer overflows (though in this case each site was
fine).
It's also shorter to use xstrfmt, and the printf-format
tends to be easier for a reader to see what the final string
will look like.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Other fill_stat_cache_info() is on new entries, which should set
CE_ENTRY_ADDED in cache_changed, so we're safe.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"--ignore-space-change" option of "git apply" ignored the
spaces at the beginning of line too aggressively, which is
inconsistent with the option of the same name "diff" and "git diff"
have.
* jc/apply-ignore-whitespace:
apply --ignore-space-change: lines with and without leading whitespaces do not match
Eradicate mistaken use of "nor" (that is, essentially "nor" used
not in "neither A nor B" ;-)) from in-code comments, command output
strings, and documentations.
* jl/nor-or-nand-and:
code and test: fix misuses of "nor"
comments: fix misuses of "nor"
contrib: fix misuses of "nor"
Documentation: fix misuses of "nor"
The fuzzy_matchlines() function is used when attempting to resurrect
a patch that is whitespace-damaged, or when applying a patch that
was produced against an old codebase to the codebase after
indentation change.
The patch may want to change a line "a_bc" ("_" is used throught
this description for a whitespace to make it stand out) in the
original into something else, and we may not find "a_bc" in the
current source, but there may be "a__bc" (two spaces instead of one
the whitespace-damaged patch claims to expect). By ignoring the
amount of whitespaces, it forces "git apply" to consider that "a_bc"
in the broken patch meant to refer to "a__bc" in reality.
However, the implementation special cases a run of whitespaces at
the beginning of a line and makes "abc" match "_abc", even though a
whitespace in the middle of string never matches a 0-width gap,
e.g. "a_bc" does not match "abc". A run of whitespace at the end of
one string does not match a 0-width end of line on the other line,
either, e.g. "abc_" does not match "abc".
Fix this inconsistency by making the code skip leading whitespaces
only when both strings begin with a whitespace. This makes the
option mean the same as the option of the same name in "diff" and
"git diff".
Note that I am not sure if anybody sane should use this option in
the first place. The fuzzy match logic may be able to find the
original line that the patch author may have meant to touch because
it does not fully trust what the original lines say (i.e. context
lines prefixed by " " and old lines prefixed by "-" does not have to
exactly match the contents the patch is applied to). There is no
reason for us to trust what the replacement lines (i.e. new lines
prefixed by "+") say, either, but with this option enabled, we end
up copying these new lines with suspicious whitespace distributions
literally into the patched result. But as long as we keep it, we
should make it do its insane thing consistently.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We started using wildmatch() in place of fnmatch(3); complete the
process and stop using fnmatch(3).
* nd/no-more-fnmatch:
actually remove compat fnmatch source code
stop using fnmatch (either native or compat)
Revert "test-wildmatch: add "perf" command to compare wildmatch and fnmatch"
use wildmatch() directly without fnmatch() wrapper
Shrink lifetime of variables by moving their definitions to an
inner scope where appropriate.
* ep/varscope:
builtin/gc.c: reduce scope of variables
builtin/fetch.c: reduce scope of variable
builtin/commit.c: reduce scope of variables
builtin/clean.c: reduce scope of variable
builtin/blame.c: reduce scope of variables
builtin/apply.c: reduce scope of variables
bisect.c: reduce scope of variable
Make it clear that we don't use fnmatch() anymore.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Leaving only the function definitions and declarations so that any
new topic in flight can still make use of the old functions, replace
existing uses of the prefixcmp() and suffixcmp() with new API
functions.
The change can be recreated by mechanically applying this:
$ git grep -l -e prefixcmp -e suffixcmp -- \*.c |
grep -v strbuf\\.c |
xargs perl -pi -e '
s|!prefixcmp\(|starts_with\(|g;
s|prefixcmp\(|!starts_with\(|g;
s|!suffixcmp\(|ends_with\(|g;
s|suffixcmp\(|!ends_with\(|g;
'
on the result of preparatory changes in this series.
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This task emerged from b04ba2bb (parse-options: deprecate OPT_BOOLEAN,
2011-09-27). All occurrences of the respective variables have
been reviewed and none of them relied on the counting up mechanism,
but all of them were using the variable as a true boolean.
This patch does not change semantics of any command intentionally.
Signed-off-by: Stefan Beller <stefanbeller@googlemail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The name marc.theaimsgroup.com is no longer active, and has
migrated to marc.info.
Signed-off-by: Ondřej Bílka <neleai@seznam.cz>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The variable len is set to
len = strchrnul(line, '\n') - line;
unconditionally 9 lines later, hence we can remove the call to strlen.
Signed-off-by: Stefan Beller <stefanbeller@googlemail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
There are only four (with some generous rounding) instances in the
current source code where we speak of "subproject" instead of
"submodule". They are as follows:
* one error message in git-apply and two in entry.c
* the patch format for submodule changes
The latter was introduced in 0478675 (Expose subprojects as special
files to "git diff" machinery, 2007-04-15), apparently before the
terminology was settled. We can of course not change the patch
format.
Let's at least change the error messages to consistently call them
"submodule".
Signed-off-by: Thomas Rast <trast@inf.ethz.ch>
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git apply" parsed patches that add new files, generated by programs
other than Git, incorrectly. This is an old breakage in v1.7.11.
* tr/maint-apply-non-git-patch-parsefix:
apply: carefully strdup a possibly-NULL name
I attempted to make index_state->cache[] a "const struct cache_entry **"
to find out how existing entries in index are modified and where. The
question I have is what do we do if we really need to keep track of on-disk
changes in the index. The result is
- diff-lib.c: setting CE_UPTODATE
- name-hash.c: setting CE_HASHED
- preload-index.c, read-cache.c, unpack-trees.c and
builtin/update-index: obvious
- entry.c: write_entry() may refresh the checked out entry via
fill_stat_cache_info(). This causes "non-const struct cache_entry
*" in builtin/apply.c, builtin/checkout-index.c and
builtin/checkout.c
- builtin/ls-files.c: --with-tree changes stagemask and may set
CE_UPDATE
Of these, write_entry() and its call sites are probably most
interesting because it modifies on-disk info. But this is stat info
and can be retrieved via refresh, at least for porcelain
commands. Other just uses ce_flags for local purposes.
So, keeping track of "dirty" entries is just a matter of setting a
flag in index modification functions exposed by read-cache.c. Except
unpack-trees, the rest of the code base does not do anything funny
behind read-cache's back.
The actual patch is less valueable than the summary above. But if
anyone wants to re-identify the above sites. Applying this patch, then
this:
diff --git a/cache.h b/cache.h
index 430d021..1692891 100644
--- a/cache.h
+++ b/cache.h
@@ -267,7 +267,7 @@ static inline unsigned int canon_mode(unsigned int mode)
#define cache_entry_size(len) (offsetof(struct cache_entry,name) + (len) + 1)
struct index_state {
- struct cache_entry **cache;
+ const struct cache_entry **cache;
unsigned int version;
unsigned int cache_nr, cache_alloc, cache_changed;
struct string_list *resolve_undo;
will help quickly identify them without bogus warnings.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Fix for the codepath to parse patches that add new files, generated
by programs other than Git. THis is an old breakage in v1.7.11 and
will need to be merged down to the maintanance tracks.
* tr/maint-apply-non-git-patch-parsefix:
apply: carefully strdup a possibly-NULL name
2901bbe (apply: free patch->{def,old,new}_name fields, 2012-03-21)
cleaned up the memory management of filenames in the patches, but
forgot that find_name_traditional() can return NULL as a way of saying
"I couldn't find a name".
That NULL unfortunately gets passed into xstrdup() next, resulting in
a segfault. Use null_strdup() so as to safely propagate the null,
which will let us emit the correct error message.
Reported-by: DevHC on #git
Signed-off-by: Thomas Rast <trast@inf.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The compiler can short-circuit the evaluation of conditions strung
together with logical OR operators instead of computing the resulting
bitmask with binary ORs. More importantly, this patch makes the
intent of the changed code clearer, because the logical context (as
opposed to binary context) becomes immediately obvious.
While we're at it, simplify the check for patch->is_rename in
builtin/apply.c a bit; it can only be 0 or 1, so we don't need a
comparison operator.
Signed-off-by: René Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* maint:
Correct common spelling mistakes in comments and tests
kwset: fix spelling in comments
precompose-utf8: fix spelling of "want" in error message
compat/nedmalloc: fix spelling in comments
compat/regex: fix spelling and grammar in comments
obstack: fix spelling of similar
contrib/subtree: fix spelling of accidentally
git-remote-mediawiki: spelling fixes
doc: various spelling fixes
fast-export: fix argument name in error messages
Documentation: distinguish between ref and offset deltas in pack-format
i18n: make the translation of -u advice in one go
Most of these were found using Lucas De Marchi's codespell tool.
Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Acked-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git apply --whitespace=fix" was not prepared to see a line getting
longer after fixing whitespaces (e.g. tab-in-indent aka Python).
* jc/apply-ws-fix-tab-in-indent:
test: resurrect q_to_tab
apply --whitespace=fix: avoid running over the postimage buffer
Originally update-pre-post-images could assume that any whitespace
fixing will make the result only shorter by unexpanding runs of
leading SPs into HTs and removing trailing whitespaces at the end of
lines. Updating the post-image we read from the patch to match the
actual result can be performed in-place under this assumption.
These days, however, we have tab-in-indent (aka Python) rule whose
result can be longer than the original, and we do need to allocate
a larger buffer than the input and replace the result.
Fortunately the support for lengthening rewrite was already added
when we began supporting "match while ignoring whitespace
differences" mode in 86c91f9179 (git apply: option to ignore
whitespace differences, 2009-08-04). We only need to correctly
count the number of bytes necessary to hold the updated result and
tell the function to allocate a new buffer.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Instead of requiring the full 40-hex object names on the index
line, we can read submodule commit object names from the textual
diff when synthesizing a fake ancestore tree for "git am -3".
* jc/extended-fake-ancestor-for-gitlink:
apply: verify submodule commit object name better
Make sure the similarity value shown in the "apply --summary"
output is sensible, even when the input had a bogus value.
* jk/apply-similaritly-parsing:
builtin/apply: tighten (dis)similarity index parsing
Rebasing the history of superproject with change in the submodule
was broken since v1.7.12.
* jc/fake-ancestor-with-non-blobs:
apply: diagnose incomplete submodule object name better
apply: simplify build_fake_ancestor()
git-am: record full index line in the patch used while rebasing
A textual patch also records the submodule commit object name in
full. Make the parsing more robust by reading from there and
verifying the (possibly abbreviated) name on the index line matches.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This was prompted by an incorrect warning issued by clang [1], and a
suggestion by Linus to restrict the range to check for values greater
than INT_MAX since these will give bogus output after casting to int.
In fact the (dis)similarity index is a percentage, so reject values
greater than 100.
[1] http://article.gmane.org/gmane.comp.version-control.git/213857
Signed-off-by: John Keeping <john@keeping.me.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git am -3" uses this function to build a tree that records how the
preimage the patch was created from would have looked like. An
abbreviated object name on the index line is ordinarily sufficient
for us to figure out the object name the preimage tree would have
contained, but a change to a submodule by definition shows an object
name of a submodule commit which our repository should not have, and
get_sha1_blob() is not an appropriate way to read it (or get_sha1()
for that matter).
Use get_sha1_hex() and complain if we do not find a full object name
there.
We could read from the payload part of the patch to learn the full
object name of the commit, but the primary user "git rebase" has
been fixed to give us a full object name, so this should suffice
for now.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The local variable sha1_ptr in the build_fake_ancestor() function
used to either point at the null_sha1[] (if the ancestor did not
have the path) or at sha1[] (if we read the object name into the
local array), but 7a98869 (apply: get rid of --index-info in favor
of --build-fake-ancestor, 2007-09-17) made the "missing in the
ancestor" case unnecessary, hence sha1_ptr, when used, always points
at the local array.
Get rid of the unneeded variable, and restructure the if/else
cascade a bit to make it easier to read. There should be no
behaviour change.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Fix to update_pre_post_images() that did not take into account the
possibility that whitespace fix could shrink the preimage and
change the number of lines in it.
* jc/apply-trailing-blank-removal:
apply.c:update_pre_post_images(): the preimage can be truncated
5166714 (apply: Allow blank context lines to match beyond EOF,
2010-03-06) and then later 0c3ef98 (apply: Allow blank *trailing*
context lines to match beyond EOF, 2010-04-08) taught "git apply"
to trim new blank lines at the end in the patch text when matching
the contents being patched and the preimage recorded in the patch,
under --whitespace=fix mode.
When a preimage is modified to match the current contents in
preparation for such a "fixed" patch application, the context lines
in the postimage must be updated to match (otherwise, it would
reintroduce whitespace breakages), and update_pre_post_images()
function is responsible for doing this. However, this function was
not updated to take into account a case where the removal of
trailing blank lines reduces the number of lines in the preimage,
and triggered an assertion error.
The logic to fix the postimage by copying the corrected context
lines from the preimage was not prepared to handle this case,
either, but it was protected by the assert() and only got exposed
when the assertion is corrected.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git apply -p0" did not parse pathnames on "diff --git" line
correctly. This caused patches that had pathnames in no other
places to be mistakenly rejected (most notably, binary patch that
does not rename nor change mode). Textual patches, renames or mode
changes have preimage and postimage pathnames in different places in
a form that can be parsed unambiguously and did not suffer from this
problem.
* jc/apply-binary-p0:
apply: compute patch->def_name correctly under -p0
"git apply -p0" did not parse pathnames on "diff --git" line
correctly. This caused patches that had pathnames in no other
places to be mistakenly rejected (most notably, binary patch that
does not rename nor change mode). Textual patches, renames or
mode changes have preimage and postimage pathnames in different
places in a form that can be parsed unambiguously and did not suffer
from this problem.
* jc/apply-binary-p0:
apply: compute patch->def_name correctly under -p0
A lot of i18n mark-up for the help text from "git <cmd> -h".
* nd/i18n-parseopt-help: (66 commits)
Use imperative form in help usage to describe an action
Reduce translations by using same terminologies
i18n: write-tree: mark parseopt strings for translation
i18n: verify-tag: mark parseopt strings for translation
i18n: verify-pack: mark parseopt strings for translation
i18n: update-server-info: mark parseopt strings for translation
i18n: update-ref: mark parseopt strings for translation
i18n: update-index: mark parseopt strings for translation
i18n: tag: mark parseopt strings for translation
i18n: symbolic-ref: mark parseopt strings for translation
i18n: show-ref: mark parseopt strings for translation
i18n: show-branch: mark parseopt strings for translation
i18n: shortlog: mark parseopt strings for translation
i18n: rm: mark parseopt strings for translation
i18n: revert, cherry-pick: mark parseopt strings for translation
i18n: rev-parse: mark parseopt strings for translation
i18n: reset: mark parseopt strings for translation
i18n: rerere: mark parseopt strings for translation
i18n: status: mark parseopt strings for translation
i18n: replace: mark parseopt strings for translation
...
Back when "git apply" was written, we made sure that the user can
skip more than the default number of path components (i.e. 1) by
giving "-p<n>", but the logic for doing so was built around the
notion of "we skip N slashes and stop". This obviously does not
work well when running under -p0 where we do not want to skip any,
but still want to skip SP/HT that separates the pathnames of
preimage and postimage and want to reject absolute pathnames.
Stop using "stop_at_slash()", and instead introduce a new helper
"skip_tree_prefix()" with similar logic but works correctly even for
the -p0 case.
This is an ancient bug, but has been masked for a long time because
most of the patches are text and have other clues to tell us the
name of the preimage and the postimage.
Noticed by Colin McCabe.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
It hasn't been used since 2006, as of commit 3cd4f5e8
"git-apply --binary: clean up and prepare for --reverse"
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Split lower bits of ce_flags field and creates a new ce_namelen
field in the in-core index structure.
* tg/ce-namelen-field:
Strip namelen out of ce_flags into a ce_namelen field
Teaches the object name parser things like a "git describe" output
is always a commit object, "A" in "git log A" must be a committish,
and "A" and "B" in "git log A...B" both must be committish, etc., to
prolong the lifetime of abbreviated object names.
* jc/sha1-name-more: (27 commits)
t1512: match the "other" object names
t1512: ignore whitespaces in wc -l output
rev-parse --disambiguate=<prefix>
rev-parse: A and B in "rev-parse A..B" refer to committish
reset: the command takes committish
commit-tree: the command wants a tree and commits
apply: --build-fake-ancestor expects blobs
sha1_name.c: add support for disambiguating other types
revision.c: the "log" family, except for "show", takes committish
revision.c: allow handle_revision_arg() to take other flags
sha1_name.c: introduce get_sha1_committish()
sha1_name.c: teach lookup context to get_sha1_with_context()
sha1_name.c: many short names can only be committish
sha1_name.c: get_sha1_1() takes lookup flags
sha1_name.c: get_describe_name() by definition groks only commits
sha1_name.c: teach get_short_sha1() a commit-only option
sha1_name.c: allow get_short_sha1() to take other flags
get_sha1(): fix error status regression
sha1_name.c: restructure disambiguation of short names
sha1_name.c: correct misnamed "canonical" and "res"
...
"git apply" learned to wiggle the base version and perform three-way
merge when a patch does not exactly apply to the version you have.
* jc/apply-3way:
apply: tests for the --3way option
apply: document --3way option
apply: allow rerere() to work on --3way results
apply: register conflicted stages to the index
apply: --3way with add/add conflict
apply: move verify_index_match() higher
apply: plug the three-way merge logic in
apply: fall back on three-way merge
apply: accept -3/--3way command line option
apply: move "already exists" logic to check_to_create()
apply: move check_to_create_blob() closer to its sole caller
apply: further split load_preimage()
apply: refactor "previous patch" logic
apply: split load_preimage() helper function out
apply: factor out checkout_target() helper function
apply: refactor read_file_or_gitlink()
apply: clear_image() clears things a bit more
apply: a bit more comments on PATH_TO_BE_DELETED
apply: fix an incomplete comment in check_patch()
Strip the name length from the ce_flags field and move it
into its own ce_namelen field in struct cache_entry. This
will both give us a tiny bit of a performance enhancement
when working with long pathnames and is a refactoring for
more readability of the code.
It enhances readability, by making it more clear what
is a flag, and where the length is stored and make it clear
which functions use stages in comparisions and which only
use the length.
It also makes CE_NAMEMASK private, so that users don't
mistakenly write the name length in the flags.
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The "index" line read from the patch to reconstruct a partial
preimage tree records the object names of blob objects.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Now we have all the necessary logic to fall back on three-way merge when
the patch does not cleanly apply, insert the conflicted entries to the
index as appropriate. This obviously triggers only when the "--index"
option is used.
When we fall back to three-way merge and some of the merges fail, just
like the case where the "--reject" option was specified and we had to
write some "*.rej" files out for unapplicable patches, exit the command
with non-zero status without showing the diffstat and summary. Otherwise
they would make the list of problematic paths scroll off the display.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When a patch wants to create a path, but we already have it in our
current state, pretend as if the patch and we independently added
the same path and cause add/add conflict, so that the user can
resolve it just like "git merge" in the same situation.
For that purpose, implement load_current() in terms of the
load_patch_target() helper introduced earlier to read the current
contents from the path given by patch->new_name (patch->old_name is
NULL for a creation patch).
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When a patch does not apply to what we have, but we know the preimage the
patch was made against, we apply the patch to the preimage to compute what
the patch author wanted the result to look like, and attempt a three-way
merge between the result and our version, using the intended preimage as
the base version.
When we are applying the patch using the index, we would additionally need
to add the object names of these three blobs involved in the merge, which
is not yet done in this step, but we add a field to "struct patch" so that
later write-out step can use it.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Grab the preimage blob the patch claims to be based on out of the object
store, apply the patch, and then call three-way-merge function. This step
still does not plug the actual three-way merge logic yet, but we are
getting there.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Begin teaching the three-way merge fallback logic "git am -3" uses
to the underlying "git apply". It only implements the command line
parsing part, and does not do anything interesting yet, other than
making sure that "--reject" and "--3way" are not given together, and
making "--3way" imply "--index".
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The check_to_create_blob() function used to check only the case
where we are applying to the working tree. Rename the function to
check_to_create() and make it also responsible for checking the case
where we apply to the index. Also make its caller responsible for
issuing an error message.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
load_preimage() is very specific to grab the current contents for
the path given by patch->old_name. Split the logic that grabs the
contents for a path out of it into a separate load_patch_target()
function.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The code to grab the result of application of a previous patch in the
input was mixed with error message generation for a case where a later
patch tries to modify contents of a path that has been removed.
The same code is duplicated elsewhere in the code. Introduce a helper
to clarify what is going on.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Given a patch for a single path, the function apply_data() reads the
preimage in core, and applies the change represented in the patch.
Separate out the first part that reads the preimage into a separate
helper function load_preimage().
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When a patch wants to touch a path, if the path exists in the index
but is missing in the working tree, "git apply --index" checks out
the file to the working tree from the index automatically and then
applies the patch.
Split this logic out to a separate helper function.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Reading a blob out of the object store does not have to require that the
caller has a cache entry for it.
Create a read_blob_object() helper function that takes the object name and
mode, and use it to reimplement the original function as a thin wrapper to
it.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The clear_image() function did not clear the line table in the image
structure; this does not matter for the current callers, as the function
is only called from the codepaths that deal with binary patches where the
line table is never populated, and the codepaths that do populate the line
table free it themselves.
But it will start to matter when we introduce a codepath to retry a failed
patch, so make sure it clears and frees everything.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The code is littered with to_be_deleted() whose purpose is not so clear.
Describe where it matters. Also remove an extra space before "#define"
that snuck in by mistake at 7fac0ee (builtin-apply: keep information about
files to be deleted, 2009-04-11).
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This check is not only about type-change (for which it would be
sufficient to check only was_deleted()) but is also about a swap
rename. Otherwise to_be_deleted() check is not justified.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The 4th arg of "new mode (%o) of %s does not match old mode (%o)%s%s"
is blank string or string " of ". Even mark the string " of " for a
complete i18n, this message is still hard to translate right.
Split it into two slight different messages would make l10n teams happy.
Signed-off-by: Jiang Xin <worldhello.net@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Text from "git cmd --help" are getting prepared for i18n.
By Nguyễn Thái Ngọc Duy
* nd/i18n-parseopt:
i18n: apply: mark parseopt strings for translation
i18n: parseopt: lookup help and argument translations when showing usage
It marks the string "...inconsistent %s filename..." where %s is either
"old" or "new" from caller. Make it two strings "...inconsistent new
filename..." and "...inconsistent old filename...".
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
More message strings marked for i18n.
By Nguyễn Thái Ngọc Duy (10) and Jonathan Nieder (1)
* nd/i18n:
help: replace underlining "help -a" headers using hyphens with a blank line
i18n: bundle: mark strings for translation
i18n: index-pack: mark strings for translation
i18n: apply: update say_patch_name to give translators complete sentence
i18n: apply: mark strings for translation
i18n: remote: mark strings for translation
i18n: make warn_dangling_symref() automatically append \n
i18n: help: mark strings for translation
i18n: mark relative dates for translation
strbuf: convenience format functions with \n automatically appended
Makefile: feed all header files to xgettext
Valgrind reports quite a lot of discarded memory inside apply.
Fix them, audit and document the buffer ownership rules.
By Junio C Hamano (8) and Jared Hance (1)
* jh/apply-free-patch:
apply: document buffer ownership rules across functions
apply: tighten constness of line buffer
apply: drop unused macro
apply: free unused fragments for submodule patch
apply: free patch->result
apply: release memory for fn_table
apply: free patch->{def,old,new}_name fields
apply: rename free_patch() to free_patch_list()
apply: do not leak patches and fragments
In general, the private functions in this file were not very
much documented; even though what each of them do is reasonably
self explanatory, the ownership rules for various buffers and
data structures were not very obvious.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
These point into a single line in the patch text we read from
the input, and they are not used to modify it.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We simply discarded the fragments that we are not going to use upon seeing
a patch to update the submodule commit bound at path that we have not
checked out.
Free these fragments, not to leak them.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This is by far the largest piece of data, much larger than the patch and
fragment structures or the three name fields in the patch structure.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The fn_table is used to record the result of earlier patch application in
case a hand-crafted input file contains multiple patches to the same file.
Both its string key (filename) and the contents are borrowed from "struct
patch" that represents the previous application in the same apply_patch()
call, and they do not leak, but the table itself was not freed properly.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
These were all allocated in the heap by parsing the header parts of the
patch, but we did not bother to free them. Some used to share the memory
(e.g. copying def_name to old_name) so this is not just the matter of
adding three calls to free().
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In the while loop inside apply_patch, patch and fragments are
dynamically allocated with a calloc. However, only unused patches
are actually freed and the rest are left to leak. Since a list is
actively built up consisting of the used patches, they can simply be
iterated and freed at the end of the function.
In addition, the text in fragments were not freed, primarily because
they mostly point into a patch text that is freed as a whole. But
there are some cases where new piece of memory is allocated and
pointed by a fragment (namely, when handling a binary patch).
Introduce a free_patch bitfield to mark each fragment if its text
needs to be freed, and free patches, fragments and fragment text
that need to be freed when we are done with the input.
Signed-off-by: Jared Hance <jaredhance@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git diff --stat" and "git apply --stat" now learn to print the line
"%d files changed, %d insertions(+), %d deletions(-)" in singular form
whenever applicable. "0 insertions" and "0 deletions" are also omitted
unless they are both zero.
This matches how versions of "diffstat" that are not prehistoric produced
their output, and also makes this line translatable.
[jc: with help from Thomas Dickey in archaeology of "diffstat"]
[jc: squashed Jonathan's updates to illustrations in tutorials and a test]
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* maint-1.7.7:
Git 1.7.7.5
Git 1.7.6.5
blame: don't overflow time buffer
fetch: create status table using strbuf
checkout,merge: loosen overwriting untracked file check based on info/exclude
cast variable in call to free() in builtin/diff.c and submodule.c
apply: get rid of useless x < 0 comparison on a size_t type
Conflicts:
Documentation/git.txt
GIT-VERSION-GEN
RelNotes
builtin/fetch.c
