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It seems we're using handle_revision_opt the same way each time, have a
wrapper around it that does the 9-liner we copy each time instead.
handle_revision_opt can be static in the module for now, it's always
possible to make it public again if needed.
Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Now use handle_revision_args instead of parse_revisions, and simplify the
handling of old-style arguments a lot thanks to the filtering.
Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This step merely moves the parser to an incremental version, still using
parse_revisions.
Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* 'jc/blame' (early part):
git-blame --reverse
builtin-blame.c: allow more than 16 parents
builtin-blame.c: move prepare_final() into a separate function.
rev-list --children
revision traversal: --children option
Conflicts:
Documentation/rev-list-options.txt
revision.c
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git_config() only had a function parameter, but no callback data
parameter. This assumes that all callback functions only modify
global variables.
With this patch, every callback gets a void * parameter, and it is hoped
that this will help the libification effort.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This new option allows "git blame" to read an old version of the file, and
up to which commit each line survived (i.e. their children rewrote the
line out of the contents). The previous revision machinery update to
decorate each commit with its children was leading to this change. When
the --reverse option is given, we read the old version and pass blame to
the children of the current suspect, instead of the usual order of
starting from the latest and passing blame to parents.
The standard yardstick of "blame" in git.git history is "rev-list.c" which
was refactored heavily in its existence. For example:
git blame -C -C -w --reverse 9de48752..master -- rev-list.c
begins like this:
6c41b801 builtin-rev-list.c (JC Hamano 2008-04-02 1) #include "cache...
6c41b801 builtin-rev-list.c (JC Hamano 2008-04-02 2) #include "commi...
6c41b801 builtin-rev-list.c (JC Hamano 2008-04-02 3) #include "tree....
6c41b801 builtin-rev-list.c (JC Hamano 2008-04-02 4) #include "blob....
213523f4 rev-list.c (JC Hamano 2006-03-01 5) #include "epoch...
6c41b801 builtin-rev-list.c (JC Hamano 2008-04-02 6)
ab57c8dd rev-list.c (JC Hamano 2006-02-24 7) #define SEEN
ab57c8dd rev-list.c (JC Hamano 2006-02-24 8) #define INTERES...
213523f4 rev-list.c (JC Hamano 2006-03-01 9) #define COUNTED...
7e21c29b rev-list.c (LTorvalds 2005-07-06 10) #define SHOWN ...
6c41b801 builtin-rev-list.c (JC Hamano 2008-04-02 11)
6c41b801 builtin-rev-list.c (JC Hamano 2008-04-02 12) static const ch...
b1349229 rev-list.c (LTorvalds 2005-07-26 13) "usage: git-...
This reveals that the original first four lines survived until now in
builtin-rev-list.c , inclusion of "epoch.h" was removed after 213523f4
while the contents was still in rev-list.c.
This mode probably needs more tweaking so that the commit that removed the
line (i.e. the children of the commits listed in the above sample output)
is shown instead to be useful, but then there is a little matter of which
child of a fork point to show.
For now, you can find the diff that rewrote the fifth line above by doing:
$ git log --children 213523f4^..
to find its child, which is 1025fe5 (Merge branch 'lt/rev-list' into next,
2006-03-01), and then look at that child with:
$ git show 1025fe5
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This removes the hardcoded 16 parents limit from git-blame by allowing the
parent array to be allocated dynamically. As the ultimate objective is
not about allowing dodecapus, but about annotating the history upside
down, it also renames "parent" in the code to "scapegoat"; the name of the
game used to be "pass blame to your parents", but now it is "find a
scapegoat to pass blame on".
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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After parsing the command line, we have a long loop to compute the commit
object to start annotating from. Move the logic to a separate function,
so that later patches become easier to read.
It also makes fill_origin_blob() return void; the check is always done
on !file->ptr, and nobody looks at the return value from the function.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This change removes all obvious useless if-before-free tests.
E.g., it replaces code like this:
if (some_expression)
free (some_expression);
with the now-equivalent:
free (some_expression);
It is equivalent not just because POSIX has required free(NULL)
to work for a long time, but simply because it has worked for
so long that no reasonable porting target fails the test.
Here's some evidence from nearly 1.5 years ago:
http://www.winehq.org/pipermail/wine-patches/2006-October/031544.html
FYI, the change below was prepared by running the following:
git ls-files -z | xargs -0 \
perl -0x3b -pi -e \
's/\bif\s*\(\s*(\S+?)(?:\s*!=\s*NULL)?\s*\)\s+(free\s*\(\s*\1\s*\))/$2/s'
Note however, that it doesn't handle brace-enclosed blocks like
"if (x) { free (x); }". But that's ok, since there were none like
that in git sources.
Beware: if you do use the above snippet, note that it can
produce syntactically invalid C code. That happens when the
affected "if"-statement has a matching "else".
E.g., it would transform this
if (x)
free (x);
else
foo ();
into this:
free (x);
else
foo ();
There were none of those here, either.
If you're interested in automating detection of the useless
tests, you might like the useless-if-before-free script in gnulib:
[it *does* detect brace-enclosed free statements, and has a --name=S
option to make it detect free-like functions with different names]
http://git.sv.gnu.org/gitweb/?p=gnulib.git;a=blob;f=build-aux/useless-if-before-free
Addendum:
Remove one more (in imap-send.c), spotted by Jean-Luc Herren <jlh@gmx.ch>.
Signed-off-by: Jim Meyering <meyering@redhat.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* jc/setup:
builtin-mv: minimum fix to avoid losing files
git-add: adjust to the get_pathspec() changes.
Make blame accept absolute paths
setup: sanitize absolute and funny paths in get_pathspec()
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A failure in prepare_revision_walk can be caused by
a not parseable object.
Signed-off-by: Martin Koegler <mkoegler@auto.tuwien.ac.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* sp/safecrlf:
safecrlf: Add mechanism to warn about irreversible crlf conversions
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CRLF conversion bears a slight chance of corrupting data.
autocrlf=true will convert CRLF to LF during commit and LF to
CRLF during checkout. A file that contains a mixture of LF and
CRLF before the commit cannot be recreated by git. For text
files this is the right thing to do: it corrects line endings
such that we have only LF line endings in the repository.
But for binary files that are accidentally classified as text the
conversion can corrupt data.
If you recognize such corruption early you can easily fix it by
setting the conversion type explicitly in .gitattributes. Right
after committing you still have the original file in your work
tree and this file is not yet corrupted. You can explicitly tell
git that this file is binary and git will handle the file
appropriately.
Unfortunately, the desired effect of cleaning up text files with
mixed line endings and the undesired effect of corrupting binary
files cannot be distinguished. In both cases CRLFs are removed
in an irreversible way. For text files this is the right thing
to do because CRLFs are line endings, while for binary files
converting CRLFs corrupts data.
This patch adds a mechanism that can either warn the user about
an irreversible conversion or can even refuse to convert. The
mechanism is controlled by the variable core.safecrlf, with the
following values:
- false: disable safecrlf mechanism
- warn: warn about irreversible conversions
- true: refuse irreversible conversions
The default is to warn. Users are only affected by this default
if core.autocrlf is set. But the current default of git is to
leave core.autocrlf unset, so users will not see warnings unless
they deliberately chose to activate the autocrlf mechanism.
The safecrlf mechanism's details depend on the git command. The
general principles when safecrlf is active (not false) are:
- we warn/error out if files in the work tree can modified in an
irreversible way without giving the user a chance to backup the
original file.
- for read-only operations that do not modify files in the work tree
we do not not print annoying warnings.
There are exceptions. Even though...
- "git add" itself does not touch the files in the work tree, the
next checkout would, so the safety triggers;
- "git apply" to update a text file with a patch does touch the files
in the work tree, but the operation is about text files and CRLF
conversion is about fixing the line ending inconsistencies, so the
safety does not trigger;
- "git diff" itself does not touch the files in the work tree, it is
often run to inspect the changes you intend to next "git add". To
catch potential problems early, safety triggers.
The concept of a safety check was originally proposed in a similar
way by Linus Torvalds. Thanks to Dimitry Potapov for insisting
on getting the naked LF/autocrlf=true case right.
Signed-off-by: Steffen Prohaska <prohaska@zib.de>
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Blame did not always use prefix_path.
Signed-off-by: Robin Rosenberg <robin.rosenberg@dewire.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This converts the index explicitly on read and write to its on-disk
format, allowing the in-core format to contain more flags, and be
simpler.
In particular, the in-core format is now host-endian (as opposed to the
on-disk one that is network endian in order to be able to be shared
across machines) and as a result we can dispense with all the
htonl/ntohl on accesses to the cache_entry fields.
This will make it easier to make use of various temporary flags that do
not exist in the on-disk format.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Signed-off-by: Jim Meyering <meyering@redhat.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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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>
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Run diff_tree_release_paths in the appropriate places, and add a test to
avoid NULL dereference. Better safe than sorry.
Signed-off-by: Mike Hommey <mh@glandium.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We used to keep the blob data for each origin that has any remaining
line in the result, but this will get very costly with a huge file that
has a deep history. This patch releases the blob after we ran diff
between the child rev and its parents. When passing blame from a parent
to its parent (i.e. the grandparent), the blob data for the parent may
need to be read again, but it should be relatively cheap, thanks to
delta-base cache.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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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>
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We check in cmd_blame() if the specified path is there, but we
failed to set up the working tree before that.
While at it, make setup_work_tree() just return if it was run
before.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Mike Hommey <mh@glandium.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* maint:
RelNotes-1.5.3.5: fix typo
Delay pager setup in git blame
git-cvsimport: really convert underscores in branch names to dots with -u
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This avoids to launch the pager when git blame fails for any reason.
Signed-off-by: Mike Hommey <mh@glandium.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Pass the fake commit through convert_to_git, so that the
file is adjusted for local line-ending convention.
Signed-off-by: Marius Storm-Olsen <marius@trolltech.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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* make strbuf_read_file take a size hint (works like strbuf_read)
* use it in a couple of places.
Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* 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>
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Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* Add strbuf_rtrim to remove trailing spaces.
* Add strbuf_insert to insert data at a given position.
* Off-by one fix in strbuf_addf: strbuf_avail() does not counts the final
\0 so the overflow test for snprintf is the strict comparison. This is
not critical as the growth mechanism chosen will always allocate _more_
memory than asked, so the second test will not fail. It's some kind of
miracle though.
* Add size extension hints for strbuf_init and strbuf_read. If 0, default
applies, else:
+ initial buffer has the given size for strbuf_init.
+ first growth checks it has at least this size rather than the
default 8192.
Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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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>
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This patch arose from a discussion started by Jim Meyering's patch
whose intention was to provide better diagnostics for failed writes.
Linus proposed a better way to do things, which also had the added
benefit that adding a fflush() to git-log-* operations and incremental
git-blame operations could improve interactive respose time feel, at
the cost of making things a bit slower when we aren't piping the
output to a downstream program.
This patch skips the fflush() calls when stdout is a regular file, or
if the environment variable GIT_FLUSH is set to "0". This latter can
speed up a command such as:
GIT_FLUSH=0 strace -c -f -e write time git-rev-list HEAD | wc -l
a tiny amount.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When refactoring code to split one iteration of a too deeply
nested loop into a separate function, it inevitably makes the
indentation levels shallower (that's the sole point of such a
refactoring). With "git blame -w", you can ignore such
re-indentation and pass blame for such moved lines to the
parent.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* maint:
Small correction in reading of commit headers
Documentation: fix typo in git-remote.txt
Add test for blame corner cases.
blame: -C -C -C
blame: Notice a wholesale incorporation of an existing file.
Fix --boundary output
diff format documentation: describe raw combined diff format
Mention version 1.5.1 in tutorial and user-manual
Add --no-rebase option to git-svn dcommit
Fix markup in git-svn man page
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When you do this, existing "blame -C -C" would not find that the
latter half of the file2 came from the existing file1:
... both file1 and file2 are tracked ...
$ cat file1 >>file2
$ git add file1 file2
$ git commit
This is because we avoid the expensive find-copies-harder code
that makes unchanged file (in this case, file1) as a candidate
for copy & paste source when annotating an existing file
(file2). The third -C now allows it. However, this obviously
makes the process very expensive. We've actually seen this
patch before, but I dismissed it because it covers such a narrow
(and arguably stupid) corner case.
Signed-off-by: Junio C Hamano <junkio@cox.net>
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The -C option to blame tries to find a section of a preimage
file by running diff against the lines whose origin is still
unknown, and excluding the different parts. The code however
did not cover the case where the tail part of the section
matched, which we handle for the normal non-move/copy codepath.
This breakage was most visible when preimage file matches in its
entirety and failed to pass blame in such a case.
Signed-off-by: Junio C Hamano <junkio@cox.net>
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There really isn't any point in turning off .mailmap. The
number of mailmap lookups are bounded by number of lines in the
target file, and the real blame processing is much more
expensive. If it turns out to be too costly, we should optimize
the mailmap lookup itself, instead of avoiding the call.
If the author information of commits of the project are
relatively clean, .mailmap would have only small number of
entries, and the overhead of looking it up will not be high. On
the other hand, if the author information is really screwed up
that a good .mailmap needs to be maintained to run shortlog,
giving uncleaned names in blame output is not helpful at all
either.
Signed-off-by: Junio C Hamano <junkio@cox.net>
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read_mailmap already returns not 0 in case of error, and nothing
seem to be interested in it. It also is silent about the fact
(read_mailmap being to chatty would justify the call to access,
but there is no point for it to be and it isn't).
Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
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This makes git-blame to use the same mailmap used by
git-shortlog.
Signed-off-by: Junio C Hamano <junkio@cox.net>
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With this "git blame -b -s HEAD~n..HEAD" becomes a nicer way to
review the result of recent changes in context.
Signed-off-by: Junio C Hamano <junkio@cox.net>
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Moved options that pertained to both git-blame and git-annotate to a
common file blame-options.txt.
builtin-blame.c: Removed --compatibility, --long, --time from the
short usage as they are not handled in the code.
Documentation/git-blame.txt: Removed common options to git-annotate.
Added documentation for --score-debug. Removed --compatibility.
Adjusted usage at top to not wrap on 80 columns.
Documentation/git-annotate.txt: Using common options blame-options.txt.
Documentation/blame-options.txt: Added -b note about associated config
option, added --root note about associated config option, added
documentation for --show-stats. Removed --long, --time, --rev-file as
those options do not really exist. Added documentation for -M/-C taking
an optional score argument for detection of moved lines.
Signed-off-by: Andrew Ruder <andy@aeruder.net>
Signed-off-by: Junio C Hamano <junkio@cox.net>
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git-blame would overflow commit->buffer when annotating files with long paths.
Signed-off-by: Michael Spang <mspang@uwaterloo.ca>
Signed-off-by: Junio C Hamano <junkio@cox.net>
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The earlier round makes the function return "is it different"
and it does not return a value suitable for sorting anymore. Reverse
the logic to return "are they the same suspect" instead, and rename
it to "same_suspect()".
Signed-off-by: Junio C Hamano <junkio@cox.net>
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The commit structures are guaranteed their uniqueness by the object
layer, so we can check their address and see if they are the same
without going down to the object sha1 level.
Signed-off-by: Junio C Hamano <junkio@cox.net>
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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>
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We shouldn't attempt to assign constant strings into char*, as the
string is not writable at runtime. Likewise we should always be
treating unsigned values as unsigned values, not as signed values.
Most of these are very straightforward. The only exception is the
(unnecessary) xstrdup/free in builtin-branch.c for the detached
head case. Since this is a user-level interactive type program
and that particular code path is executed no more than once, I feel
that the extra xstrdup call is well worth the easy elimination of
this warning.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
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Pierre Habouzit
Junio C Hamano
Johannes Schindelin
Jim Meyering
Martin Koegler
Steffen Prohaska
Robin Rosenberg
Linus Torvalds
Jim Meyering
Mike Hommey
Marius Storm-Olsen
Theodore Ts'o
Junio C Hamano
Alex Riesen
Andrew Ruder
Michael Spang
Shawn O. Pearce