Fix git-diff to make it produce useful 3-way diffs for merge conflicts in
repositories with autocrlf enabled. Otherwise it always reports that the
whole file was changed, because it uses the contents from the working tree
without necessary conversion.
Signed-off-by: Alexander Gavrilov <angavrilov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This further enhances xdi_diff_outf() interface so that it takes two
common parameters: the callback function that processes one line at a
time, and a pointer to its application specific callback data structure.
xdi_diff_outf() creates its own "xdiff_emit_state" structure and stashes
these two away inside it, which is used by the lowest level output
function in the xdiff_outf() callchain, consume_one(), to call back to the
application layer. With this restructuring, we lift the requirement that
the caller supplied callback data structure embeds xdiff_emit_state
structure as its first member.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
To prepare for the need to initialize and release resources for an
xdi_diff with the xdiff_outf output function, make a new function to
wrap this usage.
Old:
ecb.outf = xdiff_outf;
ecb.priv = &state;
...
xdi_diff(file_p, file_o, &xpp, &xecfg, &ecb);
New:
xdi_diff_outf(file_p, file_o, &state.xm, &xpp, &xecfg, &ecb);
Signed-off-by: Brian Downing <bdowning@lavos.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When we include a few uninteresting lines before the interesting ones as
context, we are only interested in seeing the surviving lines themselves
and not the deleted lines that are before them. Mark the added leading
context lines in give_context() and not show deleted lines form them.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
These variables were made unnecessary by commit
3969cf7db1.
Signed-off-by: Adam Simpkins <adam@adamsimpkins.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The resulting data is zero terminated after the read loop, but
the subsequent loop that scans for '\n' will overrun the buffer.
Signed-off-by: Heikki Orsila <heikki.orsila@iki.fi>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This moves the logic to quote two paths (prefix + path) in
C-style introduced in the previous commit from the
dump_quoted_path() in combine-diff.c to quote.c, and uses it to
fix rewrite_diff() that never C-quoted the pathnames correctly.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Earlier when showing combined diff, the filenames on the ---/+++
header lines were quoted incorrectly. a/ (or b/) prefix was
output literally and then the path was output, with c-quoting.
This fixes the quoting logic, and while at it, adjusts the code
to use the customizable prefix (a_prefix and b_prefix)
introduced recently.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This inserts a new function xdi_diff() that currently does not
do anything other than calling the underlying xdl_diff() to the
callchain of current callers of xdl_diff() function.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
reverse_diff was a bit-value in disguise, it's merged in the flags now.
Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* quote_c_style works on a strbuf instead of a wild buffer.
* quote_c_style is now clever enough to not add double quotes if not needed.
* write_name_quoted inherits those advantages, but also take a different
set of arguments. Now instead of asking for quotes or not, you pass a
"terminator". If it's \0 then we assume you don't want to escape, else C
escaping is performed. In any case, the terminator is also appended to the
stream. It also no longer takes the prefix/prefix_len arguments, as it's
seldomly used, and makes some optimizations harder.
* write_name_quotedpfx is created to work like write_name_quoted and take
the prefix/prefix_len arguments.
Thanks to those API changes, diff.c has somehow lost weight, thanks to the
removal of functions that were wrappers around the old write_name_quoted
trying to give it a semantics like the new one, but performing a lot of
allocations for this goal. Now we always write directly to the stream, no
intermediate allocation is performed.
As a side effect of the refactor in builtin-apply.c, the length of the bar
graphs in diffstats are not affected anymore by the fact that the path was
clipped.
Signed-off-by: Pierre Habouzit <madcoder@debian.org>
The instances of xdemitconf_t were initialized member by member.
Instead, initialize them to all zero, so we do not have
to update those places each time we introduce a new member.
[jc: minimally fixed by getting rid of a new global]
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This patch fixes all calls to xread() where the return value is not
stored into an ssize_t. The patch should not have any effect whatsoever,
other than putting better/more appropriate type names on variables.
Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <junkio@cox.net>
This enhances the attributes mechanism so that external programs
meant for existing GIT_EXTERNAL_DIFF interface can be specifed
per path.
To configure such a custom diff driver, first define a custom
diff driver in the configuration:
[diff "my-c-diff"]
command = <<your command string comes here>>
Then mark the paths that you want to use this custom driver
using the attribute mechanism.
*.c diff=my-c-diff
The intent of this separation is that the attribute mechanism is
used for specifying the type of the contents, while the
configuration mechanism is used to define what needs to be done
to that type of the contents, which would be specific to both
platform and personal taste.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Some systems have sizeof(off_t) == 8 while sizeof(size_t) == 4.
This implies that we are able to access and work on files whose
maximum length is around 2^63-1 bytes, but we can only malloc or
mmap somewhat less than 2^32-1 bytes of memory.
On such a system an implicit conversion of off_t to size_t can cause
the size_t to wrap, resulting in unexpected and exciting behavior.
Right now we are working around all gcc warnings generated by the
-Wshorten-64-to-32 option by passing the off_t through xsize_t().
In the future we should make xsize_t on such problematic platforms
detect the wrapping and die if such a file is accessed.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
When core.symlinks is false, and a merge of symbolic links had conflicts,
the merge result is left as a file in the working directory. A decision
must be made whether the file is treated as a regular file or as a
symbolic link. This patch treats the file as a symbolic link only if
all merge parents were also symbolic links.
Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
Signed-off-by: Junio C Hamano <junkio@cox.net>
We currently have two parallel notation for dealing with object types
in the code: a string and a numerical value. One of them is obviously
redundent, and the most used one requires more stack space and a bunch
of strcmp() all over the place.
This is an initial step for the removal of the version using a char array
found in object reading code paths. The patch is unfortunately large but
there is no sane way to split it in smaller parts without breaking the
system.
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Few of us use git to compare or even version-control 2GB files,
but when we do, we'll want it to work.
Reading a recent patch, I noticed two lines like this:
int len = st.st_size;
Instead of "int", that should be "size_t". Otherwise, in the
non-symlink case, with 64-bit size_t, if the file's size is 2GB,
the following xmalloc will fail:
result = xmalloc(len + 1);
trying to allocate 2^64 - 2^31 + 1 bytes (assuming sign-extension
in the int-to-size_t promotion). And even if it didn't fail, the
subsequent "result[len] = 0;" would be equivalent to an unpleasant
"result[-2147483648] = 0;"
The other nearby "int"-declared size variable, sz, should also be of
type size_t, for the same reason. If sz ever wraps around and becomes
negative, xread will corrupt memory _before_ the "result" buffer.
Signed-off-by: Jim Meyering <jim@meyering.net>
Signed-off-by: Junio C Hamano <junkio@cox.net>
"git-diff-files --cc" to show conflicts during merge did not pass
the correct mode information for the working tree down, and showed
bogus combined diff.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Even when --unified=0 is given, the main loop to show the
combined textual diff needs to handle a line that is unchanged
but has lines that were deleted relative to a parent before it
(because that is where the lost lines hang). However, such a
line should not be emitted in the final output.
Signed-off-by: Junio C Hamano <junkio@cox.net>
"new file" and "deleted file" were already reported in the
original code, but the logic was not as transparent as it could
have. This uses a few variables and more comments to clarify
the flow. The rule is: (1) if a path exists in the merge result
when no parent had it, we report "new" (otherwise it came from
the parents, as opposed to have added by the evil merge). (2) if
the path does not exist in the merge result, it is "deleted".
Since we can say "new" and "deleted", there is no reason not to
follow the /dev/null convention. This fixes it.
Appending function name after @@@ ... @@@ is trivial, so
implement it.
Signed-off-by: Junio C Hamano <junkio@cox.net>
This abstracts away the size of the hash values when copying them
from memory location to memory location, much as the introduction
of hashcmp abstracted away hash value comparsion.
A few call sites were using char* rather than unsigned char* so
I added the cast rather than open hashcpy to be void*. This is a
reasonable tradeoff as most call sites already use unsigned char*
and the existing hashcmp is also declared to be unsigned char*.
[jc: Splitted the patch to "master" part, to be followed by a
patch for merge-recursive.c which is not in "master" yet.
Fixed the cast in the latter hunk to combine-diff.c which was
wrong in the original.
Also converted ones left-over in combine-diff.c, diff-lib.c and
upload-pack.c ]
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Introduces global inline:
hashcmp(const unsigned char *sha1, const unsigned char *sha2)
Uses memcmp for comparison and returns the result based on the length of
the hash name (a future runtime decision).
Acked-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Replace sha1 comparisons to null_sha1 with a global inline (which previously an
unused static inline in builtin-apply.c)
[jc: with a fix from Jonas Fonseca.]
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
A patch from David Rientjes made me realize we do not have to have
this function -- just call diff_unmodified_pair() directly.
Signed-off-by: Junio C Hamano <junkio@cox.net>
The only visible change is that git-blame doesn't understand
"--compability" anymore, but it does accept "--compatibility" instead,
which is already documented.
Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
In diff_tree_combined(), show_log_first boolean is initialized with
rev->loginfo (pointer to a string); the intention is that if we have
some string to be emitted we would want to remember that fact. Picky
compilers are offended by this, so make the expression a bit type-safer.
Signed-off-by: Junio C Hamano <junkio@cox.net>
- combine_diff() took cnt (count) which is unsigned in nature but the
parameter type was declared as "int";
- find_next() took "uninteresting" parameter, which masked a static
function of the same name;
- show_parent_lno() took an unused parameter "cnt";
- show_patch_diff() used a local variable in nested inner scope with
the same name with different type, masking the one in the outer scope;
- the last loop in show_patch_diff iterated over lines so it should use
the local variable "lno"
Signed-off-by: Junio C Hamano <junkio@cox.net>
This fixes various problems in the new diff options code.
- Fix --cc/-c --patch; it showed two-tree diff used internally.
- Use "---\n" only where it matters -- that is, use it
immediately after the commit log text when we show a
commit log and something else before the patch text.
- Do not output spurious extra "\n"; have an extra newline
after the commit log text always when we have diff output and
we are not doing oneline.
- When running a pickaxe you need to go recursive.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Add msg_sep variable to struct diff_options. msg_sep is printed after
commit message. Default is "\n", format-patch sets it to "---\n".
This also removes the second argument from show_log() because all
callers derived it from the first argument:
show_log(rev, rev->loginfo, ...
Signed-off-by: Timo Hirvonen <tihirvon@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
DIFF_FORMAT_* are now bit-flags instead of enumerated values.
Signed-off-by: Timo Hirvonen <tihirvon@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
We used to parse "-U" and "--unified" as part of the GIT_DIFF_OPTS
environment variable, but strangely enough we would _not_ parse them as
part of the normal diff command line (where we only accepted "-u").
This adds parsing of -U and --unified, both with an optional numeric
argument. So now you can just say
git diff --unified=5
to get a unified diff with a five-line context, instead of having to do
something silly like
GIT_DIFF_OPTS="--unified=5" git diff -u
(that silly format does continue to still work, of course).
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
"git diff(n)" without --base, --ours, etc. defaults to --cc,
which usually is the same as -p unless you are in the middle of
a conflicted merge, just like the shell script version.
"git diff(n) blobA blobB path" complains and dies.
"git diff(n) tree0 tree1 tree2...treeN" does combined diff that
shows a merge of tree1..treeN to result in tree0.
Giving "-c" option to any command that defaults to "--cc" turns
off dense-combined flag.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Asking for stat (either with --stat or --patch-with-stat) gives
you diffstat for the first parent, even under combine-diff.
While the combined patch is useful to highlight the complexity
and interaction of the parts touched by all branches when
reviewing a merge commit, diffstat is a tool to assess the
extent of damage the merge brings in, and showing stat with the
first parent is more sensible than clever per-parent diffstat.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Here's a further patch on top of the previous one with cosmetic
improvements (no "real" code changes, just trivial updates):
- it gets the "---" before a diffstat right, including for the combined
merge case. Righ now the logic is that we always use "---" when we have
a diffstat, and an empty line otherwise. That's how I visually prefer
it, but hey, it can be tweaked later.
- I made "diff --cc/combined" add the "---/+++" header lines too. The
thing won't be mistaken for a valid diff, since the "@@" lines have too
many "@" characters (three or more), but it just makes it visually
match a real diff, which at least to me makes a big difference in
readability. Without them, it just looks very "wrong".
I guess I should have taken the filename from each individual entry
(and had one "---" file per parent), but I didn't even bother to try to
see how that works, so this was the simple thing.
With this, doing a
git log --cc --patch-with-stat
looks quite readable, I think. The only nagging issue - as far as I'm
concerned - is that diffstats for merges are pretty questionable the way
they are done now. I suspect it would be better to just have the _first_
diffstat, and always make the merge diffstat be the one for "result
against first parent".
Signed-off-by: Junio C Hamano <junkio@cox.net>
On Sun, 16 Apr 2006, Junio C Hamano wrote:
>
> In the mid-term, I am hoping we can drop the generate_header()
> callchain _and_ the custom code that formats commit log in-core,
> found in cmd_log_wc().
Ok, this was nastier than expected, just because the dependencies between
the different log-printing stuff were absolutely _everywhere_, but here's
a patch that does exactly that.
The patch is not very easy to read, and the "--patch-with-stat" thing is
still broken (it does not call the "show_log()" thing properly for
merges). That's not a new bug. In the new world order it _should_ do
something like
if (rev->logopt)
show_log(rev, rev->logopt, "---\n");
but it doesn't. I haven't looked at the --with-stat logic, so I left it
alone.
That said, this patch removes more lines than it adds, and in particular,
the "cmd_log_wc()" loop is now a very clean:
while ((commit = get_revision(rev)) != NULL) {
log_tree_commit(rev, commit);
free(commit->buffer);
commit->buffer = NULL;
}
so it doesn't get much prettier than this. All the complexity is entirely
hidden in log-tree.c, and any code that needs to flush the log literally
just needs to do the "if (rev->logopt) show_log(...)" incantation.
I had to make the combined_diff() logic take a "struct rev_info" instead
of just a "struct diff_options", but that part is pretty clean.
This does change "git whatchanged" from using "diff-tree" as the commit
descriptor to "commit", and I changed one of the tests to reflect that new
reality. Otherwise everything still passes, and my other tests look fine
too.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Mod_type in particular sure looks like it wants to be used, but isn't.
Signed-off-by: Serge E. Hallyn <serue@us.ibm.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
The variable hunk_end points at a line number, which is
represented as unsigned long by all the other variables.
Signed-off-by: Junio C Hamano <junkio@cox.net>
The previous round showed the delete-only hunks at the end, but
forgot to mark them interesting when they were.
Signed-off-by: Junio C Hamano <junkio@cox.net>
We used to lose hunks that appear at the end and have only
deletion. This makes sure that the record beyond the end of
file (which holds such deletions) is examined.
Signed-off-by: Junio C Hamano <junkio@cox.net>
More friendly for human reading I believe, and possibly friendlier to some
parsers (although only by an epsilon).
Signed-off-by: Petr Baudis <pasky@suse.cz>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Alexander Gavrilov