The function rewrite_one is used to rewrite a single
parent of the current commit, and is used by rewrite_parents
to rewrite all the parents.
Decouple the dependence between them by making rewrite_one
a callback function that is passed to rewrite_parents. Then
export rewrite_parents for reuse by the line history browser.
We will use this function in line.c.
Signed-off-by: Bo Yang <struggleyb.nku@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
To correctly track the line ranges over several branches,
we must make sure that we have processed all children before
reaching the commit itself.
Thus we introduce a first pass in cmd_line_log that runs
prepare_revision_walk to achieve the topological ordering.
Signed-off-by: Bo Yang <struggleyb.nku@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
'struct line_chunk' is used to make sure each file is scanned
only once when printing the lines. We track the starting line
number and the offsets of all lines in the range in this struct.
We use two functions from diff.c to generate meta info and hunk
headers in the usual format.
Signed-off-by: Bo Yang <struggleyb.nku@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When going from a commit to its parents, we map the "interesting"
range of lines according to the change made.
For non-merge commit, we just run map_range on the ranges, which
works as follows:
1. Run diffcore_std to find out the pre/postimage for each file.
2. Run xdi_diff_hunks on each interesting set of pre/postimages.
3. The map_range_cb callback is invoked for each hunk by the diff
engine, and we use it to calculate the pre-image range from the
post-image range in the function map_lines.
For merge commits, we run map_range once for every parent.
Simultaneously we use a take_range pass to eliminate all ranges
that are identical. If any ranges remain after that, then the
merge is considered non-trivial.
The algorithm that maps lines from post-image to pre-image is in
the function map_lines. Generally, we use simple line number
calculation method to do the map.
Signed-off-by: Bo Yang <struggleyb.nku@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Since diff_line_range can form a single list through its
'next' pointer, we provide two kind of clone.
diff_line_range_clone:
used to clone only the element node and set the
element's 'next' pointer to NULL.
diff_line_range_clone_deeply:
used to clone the whole list of ranges.
Signed-off-by: Bo Yang <struggleyb.nku@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Use fill_metainfo to fill the line level diff meta data,
emit_line to print out a line and quote_two to quote
paths.
Signed-off-by: Bo Yang <struggleyb.nku@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
With the two new APIs of parse options added in the previous
commit, we parse the multiple '-L n,m <pathspec>' syntax.
Notice that users can give more than one '-L n,m' for each pathspec.
And a pathspec with all its '-L' options maps to a single
diff_line_range structure.
This has the exactly the same semantics as 'git blame -L n,m <pathspec>'
because we refactored and reused the blame code.
Signed-off-by: Bo Yang <struggleyb.nku@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Both 'git blame -L' and 'git log -L' parse the same style
of line number arguments, so put the 'parse_loc' function
to line.c and export it.
The caller of parse_loc should provide a callback function
which is used to calculate the start position of the nth line.
Other parts such as regexp search, line number parsing are
abstracted and re-used.
Note that, we can use '$' to specify the last line of a file.
Signed-off-by: Bo Yang <struggleyb.nku@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
'struct diff_line_range' is the main data structure to keep
track of the line ranges we are currently interested in. The
user starts digging from a line range, and after examining the
diff that affects that range by a commit, we can find a new
range that corresponds to this range. So, we will associate this
new range with the commit's parent commit.
There is one 'diff_line_range' for each file, and there are
multiple 'struct line_range' in each 'diff_line_range'. In this way,
we support multiple ranges.
Within 'struct line_range', there are multiple 'struct print_range'
which represent a diff hunk.
Signed-off-by: Bo Yang <struggleyb.nku@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
1. parse_options_current: get the current option/argument the API
is dealing with;
2. parse_options_next: skip the current argument, moving to the
next one. Unless 'keep' is set, discard the skipped argument
from the final argument list.
Signed-off-by: Bo Yang <struggleyb.nku@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Make parse_options_step() report PARSE_OPT_NON_OPTION instead
of PARSE_OPT_DONE to the caller, when it sees a non-option argument.
This will help implementing a nonstandard option syntax that
takes more than one parameters to an option, e.g.
-L n1,m1 pathspec1 -L n2,m2 pathspec2
by directly calling parse_options_step(). The parse_options() API
only calls parse_options_step() once, and its callers are not affected
by this change.
Thanks-to: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Bo Yang <struggleyb.nku@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When developing/testing we run git-gui.sh directly and the makefile
configured variables are not properly set. Configure the new shellpath
accessor to handle this case.
On Windows we may not find the shell so in this case revert to simply
executing the filter command without the shell intermediate.
Signed-off-by: Pat Thoyts <patthoyts@users.sourceforge.net>
The textconv filters may include multiple arguments and may make use
of unix shell features. To maintain compatibility with 'git blame'
ensure these commands are passed through bash.
Reported-by: Kirill Smelkov <kirr@landau.phys.spbu.ru>
Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Pat Thoyts <patthoyts@users.sourceforge.net>
Without this, attempting to index a pack containing objects that have been
replaced results in a fatal error that looks like:
fatal: SHA1 COLLISION FOUND WITH <replaced-object> !
Signed-off-by: Nelson Elhage <nelhage@ksplice.com>
Acked-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* tr/rfc-reset-doc:
Documentation/reset: move "undo permanently" example behind "make topic"
Documentation/reset: reorder examples to match description
Documentation/reset: promote 'examples' one section up
Documentation/reset: separate options by mode
Documentation/git-reset: reorder modes for soft-mixed-hard progression
* hv/submodule-find-ff-merge:
Implement automatic fast-forward merge for submodules
setup_revisions(): Allow walking history in a submodule
Teach ref iteration module about submodules
* tc/checkout-B:
builtin/checkout: handle -B from detached HEAD correctly
builtin/checkout: learn -B
builtin/checkout: reword hint for -b
add tests for checkout -b
* bc/use-more-hardlinks-in-install:
Makefile: make hard/symbolic links for non-builtins too
Makefile: link builtins residing in bin directory to main git binary too
* master:
post-receive-email: remove spurious commas in email subject
fast-import: export correctly marks larger than 2^20-1
t/lib-git-svn.sh: use $PERL_PATH for perl, not perl from $PATH
diff: strip extra "/" when stripping prefix
Some firewalls restrict HTTP connections based on the clients user agent. This
commit provides the user the ability to modify the user agent string via either
a new config option (http.useragent) or by an environment variable
(GIT_HTTP_USER_AGENT).
Relevant documentation is added to Documentation/config.txt.
Signed-off-by: Spencer E. Olson <olsonse@umich.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* maint:
post-receive-email: remove spurious commas in email subject
fast-import: export correctly marks larger than 2^20-1
t/lib-git-svn.sh: use $PERL_PATH for perl, not perl from $PATH
diff: strip extra "/" when stripping prefix
The previous form produced subjects like
[SCM] project.git branch, foo, updated. ...
The new one will produce the lighter
[SCM] project.git branch foo updated. ...
Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
dump_marks_helper() has a bug when dumping marks larger than 2^20-1,
i.e., when the sparse array has more than two levels. The bug was
that the 'base' counter was being shifted by 20 bits at level 3, and
then again by 10 bits at level 2, rather than a total shift of 20 bits
in this argument to the recursive call:
(base + k) << m->shift
There are two ways to fix this correctly, the elegant:
(base + k) << 10
and the one I chose due to edit distance:
base + (k << m->shift)
Signed-off-by: Raja R Harinath <harinath@hurrynot.org>
Acked-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Change the git-svn tests to use $PERL_PATH, not the "perl" in $PATH.
Using perl in $PATH was added by Sam Vilain in v1.6.6-rc0~95^2~3,
Philippe Bruhat introduced $PERL_PATH to the test suite in
v1.6.6-rc0~9^2, but the lib-git-svn.sh tests weren't updated to use
the new convention.
This resulted in the git-svn tests always being skipped on my
system. My /usr/bin/perl has access to SVN::Core and SVN::Repos, but
the perl in my $PATH does not.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Test porcelain and plumbing error messages for different types of errors
of merge and checkout.
Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When an error is encountered, it calls add_rejected_file() which either
- directly displays the error message and stops if in plumbing mode
(i.e. if show_all_errors is not initialized at 1)
- or stores it so that it will be displayed at the end with display_error_msgs(),
Storing the files by error type permits to have a list of files for
which there is the same error instead of having a serie of almost
identical errors.
As each bind_overlap error combines a file and an old file, a list cannot be
done, therefore, theses errors are not stored but directly displayed.
Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
To limit the number of possible error messages, the error messages for
the case would_lose_untracked_file and would_lose_orphaned in
unpack_trees_options.msgs were handled with a single string,
parameterized by an action string ("overwritten" or "removed").
Instead, we consider them as two different cases, with unparameterized
string. This will make it easier to make separate lists sorted by error
types later.
Only the bind_overlap case still takes two %s parameters, but that's
unavoidable.
Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
A porcelain message was first added in checkout.c in the commit
8ccba008 (Junio C Hamano, Sat May 17 21:03:49 2008, unpack-trees:
allow Porcelain to give different error messages) to give better feedback
in the case of merge errors.
This patch adapts the porcelain messages for the case of checkout
instead. This way, when having a checkout error, "merge" no longer
appears in the error message.
While we're there, we add an advice in the case of
would_lose_untracked_file.
Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The list of error messages was introduced as a structure, but an array
indexed over an enum is more flexible, since it allows one to store a
type of error message (index in the array) in a variable.
This change needs to rename would_lose_untracked ->
would_lose_untracked_file to avoid a clash with the function
would_lose_untracked in merge-recursive.c.
Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The helper functions are implemented, documented, and used in a few
places to validate them, but not everywhere to avoid useless code churn.
Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The typical usage pattern would be to run a test (or simply a compilation
command) at given points in history.
The shell command is ran (from the worktree root), and the rebase is
stopped when the command fails, to give the user an opportunity to fix
the problem before continuing with "git rebase --continue".
This needs a little rework of skip_unnecessary_picks, which wasn't robust
enough to deal with lines like
exec >"file name with many spaces"
in the todolist. The new version extracts command, sha1 and rest from
each line, but outputs the line itself verbatim to avoid changing the
whitespace layout.
Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Noticed by valgrind during test t0000.35 “writing this tree without
--missing-ok”.
Even in the cherry-pick foo..bar code path, such an error is the
end of the line. But maybe some day an interactive porcelain will
want to link to libgit, making this matter.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The underlying problem is that the fill_tree_descriptor()
API is easy to misuse, and this patch does not fix that.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
There are two ways a user might want to use "diff --relative":
1. For a file in a directory, like "subdir/file", the user
can use "--relative=subdir/" to strip the directory.
2. To strip part of a filename, like "foo-10", they can
use "--relative=foo-".
We currently handle both of those situations. However, if the user passes
"--relative=subdir" (without the trailing slash), we produce inconsistent
results. For the unified diff format, we collapse the double-slash of
"a//file" correctly into "a/file". But for other formats (raw, stat,
name-status), we end up with "/file".
We can do what the user means here and strip the extra "/" (and only a
slash). We are not hurting any existing users of (2) above with this
behavior change because the existing output for this case was nonsensical.
Patch by Jakub, tests and commit message by Jeff King.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This allows the caller to add its own error message to that returned
by split_cmdline. Thus error output following a failed split_cmdline
can be of the form
fatal: Bad alias.test string: cmdline ends with \
rather than
error: cmdline ends with \
fatal: Bad alias.test string
Signed-off-by: Greg Brockman <gdb@mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
git grep already runs a repository search unconditionally,
even when the --no-index option is supplied; running such a
search earlier is not very risky.
Just like with shortlog, without this change, the
“[pager] grep” configuration is not respected at all.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
shortlog already runs a repository search unconditionally;
running such a search earlier is not very risky.
Without this change, the “[pager] shortlog” configuration
is not respected at all: “git shortlog” unconditionally paginates.
The tests are a bit slow. Running the full battery like this
for all built-in commands would be counterproductive; the intent is
rather to test shortlog as a representative example command using
..._gently().
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In the spirit of v1.4.2-rc3~34^2^2 (Call setup_git_directory() much
earlier, 2006-07-28), let run_builtin() take care of searching for a
repository for built-ins that want to make use of one if present.
So now you can mark your command with RUN_SETUP_GENTLY and use
nongit = !startup_info->have_repository;
in place of
prefix = setup_git_directory_gently(&nongit);
and everything will be the same, except the repository is
discovered a little sooner.
As v1.7.2~16^2 (2010-07-14) explains, this should allow more commands
to robustly use features like "git --paginate" that look at local
configuration before the command is actually run.
This patch sets up the infrastructure. Later patches will teach
particular commands to use it.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
As v1.7.2~16^2 (git --paginate: paginate external commands
again, 2010-07-14) explains, builtins (like git config) that
do not use RUN_SETUP are not finding GIT_DIR set correctly when
it is time to launch the pager from run_builtin(). If they
were to search for a repository sooner, then the outcome of such
early repository accesses would be more predictable and reliable.
The cmd_*() functions learn whether a repository was found through the
*nongit_ok return value from setup_git_directory_gently(). If
run_builtin() is to take care of the repository search itself, that
datum needs to be retrievable from somewhere else. Use the
startup_info struct for this.
As a bonus, this information becomes available to functions such as
git_config() which might want to avoid trying to access a repository
when none is present.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The startup_info struct will collect information managed by the git
setup code, such as the prefix for relative paths passed on the
command line (i.e., path to the starting cwd from the toplevel of
the work tree) and whether a git repository has been found.
In other words, startup_info is intended to be a collection of global
variables with results that were previously returned from setup
functions. This state is global anyway (since the cwd is), even
if it is not currently tracked that way. Letting these values persist
means there is more flexibility in deciding when to run setup.
For now, the struct is empty.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
