Lots of die() calls did not actually report the kind of error, which
can leave the user confused as to the real problem. Use die_errno()
where we check a system/library call that sets errno on failure, or
one of the following that wrap such calls:
Function Passes on error from
-------- --------------------
odb_pack_keep open
read_ancestry fopen
read_in_full xread
strbuf_read xread
strbuf_read_file open or strbuf_read_file
strbuf_readlink readlink
write_in_full xwrite
Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Change calls to die(..., strerror(errno)) to use the new die_errno().
In the process, also make slight style adjustments: at least state
_something_ about the function that failed (instead of just printing
the pathname), and put paths in single quotes.
Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When trying to see if the same path exists in the parent, we ran
"diff-tree" with pathspec set to the path we are interested in with the
parent, and expect either to have exactly one resulting filepair (either
"changed from the parent", "created when there was none") or nothing (when
there is no change from the parent).
If the path used to be a directory, however, we will also see unbounded
number of entries that talk about the files that used to exist underneath
the directory in question. Correctly pick only the entry that describes
the path we are interested in in such a case (namely, the creation of the
path as a regular file).
Noticed by Ben Willard.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
To give OPT_FILENAME the prefix, we pass the prefix to parse_options()
which passes the prefix to parse_options_start() which sets the prefix
member of parse_opts_ctx accordingly. If there isn't a prefix in the
calling context, passing NULL will suffice.
Signed-off-by: Stephen Boyd <bebarino@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Essentially; s/type* /type */ as per the coding guidelines.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
setup_revisions() while getting the command line arguments parses the
given commits from the command line, which means their direct parents will
not be rewritten by the custom graft file.
Call read_ancestry() early to work around this issue.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add the following:
- git config value blame.date that expects one of the git log date
formats (e.g. relative,local,default,iso,...);
- git blame command line option --date expects one of the git
log date formats;
- documentation in blame-options.txt;
- git blame uses the appropriate date.c functions and enums to
make sense of the date format and provide appropriate data;
git blame continues to line up the output columns by padding the date
column up to the max width of the chosen date format.
The date format for git blame without both blame.date and --date continues
to be ISO for backwards compatibility.
git annotate ignores the date format specifiers and continues to uses the
ISO format, as before.
Signed-off-by: Eugene Letuchy <eugene@facebook.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This allows us to augment the repo mailmap file, and to use
mailmap files elsewhere than the repository root. Meaning
that the entries in mailmap.file will override the entries
in "./.mailmap", should they match.
Signed-off-by: Marius Storm-Olsen <marius@trolltech.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
git blame misaligns output if a author's name has a differing display width and
strlen; for instance, an accented Latin letter that takes two bytes to encode
will cause the rest of the line to be shifted to the left by one. To fix this,
use utf8_strwidth instead of strlen (and compute the padding ourselves, since
printf doesn't know about UTF-8).
Signed-off-by: Geoffrey Thomas <geofft@mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When faking a commit out of the work tree contents, use strbuf_readlink()
to read the contents of symbolic links.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Based on a patch by Brian Downing, this replaces the struct patch based
code for blame passing with calls to xdi_diff_hunks(). This way we
avoid generating and then parsing patches; we only let the interesting
infos be passed to our callbacks instead. This makes blame a bit faster:
$ blame="./git blame -M -C -C -p --incremental v1.6.0"
# master
$ /usr/bin/time $blame Makefile >/dev/null
1.38user 0.14system 0:01.52elapsed 100%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+12226minor)pagefaults 0swaps
$ /usr/bin/time $blame cache.h >/dev/null
1.66user 0.13system 0:01.80elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+12262minor)pagefaults 0swaps
# this patch series
$ /usr/bin/time $blame Makefile >/dev/null
1.27user 0.12system 0:01.40elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+11836minor)pagefaults 0swaps
$ /usr/bin/time $blame cache.h >/dev/null
1.52user 0.12system 0:01.70elapsed 97%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+12052minor)pagefaults 0swaps
Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We're going to be adding some parameters to this, so we can't have
any uninitialized data in it.
Signed-off-by: Brian Downing <bdowning@lavos.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Inline get_patch() to its only call site as a preparation for getting rid
of struct patch. Also we don't need to check the ptr members because
fill_origin_blob() already did, and the caller didn't check for NULL
anyway, so drop the test.
Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Currently git-blame outputs text from the commit messages
(e.g. the author name and the summary string) as-is, without
even providing any information about the encoding used for
the data. It makes interpreting the data in multilingual
environment very difficult.
This commit changes the blame implementation to recode the
messages using the rules used by other commands like git-log.
Namely, the target encoding can be specified through the
i18n.commitEncoding or i18n.logOutputEncoding options, or
directly on the command line using the --encoding parameter.
Converting the encoding before output seems to be more
friendly to the porcelain tools than simply providing the
value of the encoding header, and does not require changing
the output format.
If anybody needs the old behavior, it is possible to
achieve it by specifying --encoding=none.
Signed-off-by: Alexander Gavrilov <angavrilov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When the final blame is laid for a line to a <commit, path> pair, it also
gives a "previous" information to --porcelain and --incremental output
format. It gives the parent commit of the blamed commit, _and_ a path in
that parent commit that corresponds to the blamed path --- in short, it is
the origin that would have been blamed (or passed blame through) for the
line _if_ the blamed commit did not change that line.
This unfortunately makes sanity checking of refcount quite complex, so I
ripped it out for now.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Both the --porcelain and --incremental format shared the same output
format but implemented with two identical codepaths. This merges them
into one shared function.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Many call sites use strbuf_init(&foo, 0) to initialize local
strbuf variable "foo" which has not been accessed since its
declaration. These can be replaced with a static initialization
using the STRBUF_INIT macro which is just as readable, saves a
function call, and takes up fewer lines.
Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
When performing copy detection, git-blame tries to
read gitlinks as blobs, which causes it to die.
This patch adds a check to skip them.
Signed-off-by: Alexander Gavrilov <angavrilov@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
There is no reason to have a separate variable cmd_is_annotate;
OUTPUT_ANNOTATE_COMPAT option is supposed to produce the compatibility
output, and we should produce the same output even when the command was
not invoked as "annotate" but as "blame -c".
Noticed by Pasky.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
User notifications are presented as 'git cmd', and code comments
are presented as '"cmd"' or 'git's cmd', rather than 'git-cmd'.
Signed-off-by: Heikki Orsila <heikki.orsila@iki.fi>
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>
The name path_list was correct for the first usage of that data structure,
but it really is a general-purpose string list.
$ perl -i -pe 's/path-list/string-list/g' $(git grep -l path-list)
$ perl -i -pe 's/path_list/string_list/g' $(git grep -l path_list)
$ git mv path-list.h string-list.h
$ git mv path-list.c string-list.c
$ perl -i -pe 's/has_path/has_string/g' $(git grep -l has_path)
$ perl -i -pe 's/path/string/g' string-list.[ch]
$ git mv Documentation/technical/api-path-list.txt \
Documentation/technical/api-string-list.txt
$ perl -i -pe 's/strdup_paths/strdup_strings/g' $(git grep -l strdup_paths)
... and then fix all users of string-list to access the member "string"
instead of "path".
Documentation/technical/api-string-list.txt needed some rewrapping, too.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Splits for such entries are rejected anyway, so there is no
point even trying to compute them.
Signed-off-by: Alexander Gavrilov <angavrilov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Repeatedly comparing the same entry against the same set
of blobs in search for copies is quite pointless. This
huge waste of effort can be avoided using a flag in
the blame_entry structure.
Signed-off-by: Alexander Gavrilov <angavrilov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When you misuse a git command, you are shown the usage string.
But this is currently shown in the dashed form. So if you just
copy what you see, it will not work, when the dashed form
is no longer supported.
This patch makes git commands show the dash-less version.
For shell scripts that do not specify OPTIONS_SPEC, git-sh-setup.sh
generates a dash-less usage string now.
Signed-off-by: Stephan Beyer <s-beyer@gmx.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
Thomas Rast