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489 Коммитов

Автор SHA1 Сообщение Дата
Junio C Hamano a81f1a825b Merge branch 'jn/show-num-walks'
* jn/show-num-walks:
  DWIM 'git show -5' to 'git show --do-walk -5'
2010-06-27 12:07:44 -07:00
Julian Phillips 1d2f80fa79 string_list: Fix argument order for string_list_append
Update the definition and callers of string_list_append to use the
string_list as the first argument.  This helps make the string_list
API easier to use by being more consistent.

Signed-off-by: Julian Phillips <julian@quantumfyre.co.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-06-27 10:06:52 -07:00
Junio C Hamano a214afd25b Merge branch 'jc/rev-list-ancestry-path'
* jc/rev-list-ancestry-path:
  revision: Turn off history simplification in --ancestry-path mode
  revision: Fix typo in --ancestry-path error message
  Documentation/rev-list-options.txt: Explain --ancestry-path
  Documentation/rev-list-options.txt: Fix missing line in example history graph
  revision: --ancestry-path
2010-06-22 09:45:21 -07:00
Thomas Rast f69c501832 rev-list: introduce --count option
Add a --count option that, instead of actually listing the commits,
merely counts them.

This is mostly geared towards script use, and to this end it acts
specially when used with --left-right: it outputs the left and right
counts separately.  Previously, scripts would have to run a shell loop
or small inline script over to achieve the same.  (Without
--left-right, a simple |wc -l does the job.)

Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-06-12 09:39:06 -07:00
Johan Herland cb7529e13b revision: Turn off history simplification in --ancestry-path mode
When using --ancestry-path together with history simplification (typically
triggered by path limiting), history simplification would get in the way of
--ancestry-path by prematurely removing the parent links between commits on
which the ancestry path calculations are made.

This patch disables this history simplification when --ancestry-path is
enabled. This is similar to what e.g. --full-history already does.

The patch also includes a simple testcase verifying that --ancestry-path
works together with path limiting.

Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-06-06 10:16:37 -07:00
Johan Herland 97b03c3538 revision: Fix typo in --ancestry-path error message
Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-06-06 10:16:35 -07:00
Jonathan Nieder 5853caec96 DWIM 'git show -5' to 'git show --do-walk -5'
To show the last two commits with one command, one might try

 1) git show -s master~2..
 2) git show -s ^master~2 master
 3) git show -s master^ master
 4) git show -s -2 master

Choice (3) works because both commits are listed on the command line.
Choices (1) and (2) have worked ever since v1.6.4-rc~3 (Make 'git
show' more useful, 2009-07-13) disabled --no-walk in this case because
there is no other useful meaning for them to have.  Unfortunately, (4)
does not work: it outputs only one commit, because --no-walk stays on.

So disable --no-walk in this case so ‘git show’ and future ‘git
cherry-pick’ can behave as expected.

As a side effect, this unfortunately changes the meaning of
‘git log --oneline --decorate --no-walk -5 --all’: instead of listing
five refs, after this patch that command would list the five most
recent commits.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-06-02 09:15:38 -07:00
Gary V. Vaughan 4b05548fc0 enums: omit trailing comma for portability
Without this patch at least IBM VisualAge C 5.0 (I have 5.0.2) on AIX
5.1 fails to compile git.

enum style is inconsistent already, with some enums declared on one
line, some over 3 lines with the enum values all on the middle line,
sometimes with 1 enum value per line... and independently of that the
trailing comma is sometimes present and other times absent, often
mixing with/without trailing comma styles in a single file, and
sometimes in consecutive enum declarations.

Clearly, omitting the comma is the more portable style, and this patch
changes all enum declarations to use the portable omitted dangling
comma style consistently.

Signed-off-by: Gary V. Vaughan <gary@thewrittenword.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-05-31 16:59:27 -07:00
Junio C Hamano ebdc94f3be revision: --ancestry-path
"rev-list A..H" computes the set of commits that are ancestors of H, but
excludes the ones that are ancestors of A.  This is useful to see what
happened to the history leading to H since A, in the sense that "what does
H have that did not exist in A" (e.g. when you have a choice to update to
H from A).

	       x---x---A---B---C  <-- topic
	      /			\
     x---x---x---o---o---o---o---M---D---E---F---G  <-- dev
    /						  \
   x---o---o---o---o---o---o---o---o---o---o---o---N---H  <-- master

The result in the above example would be the commits marked with caps
letters (except for A itself, of course), and the ones marked with 'o'.

When you want to find out what commits in H are contaminated with the bug
introduced by A and need fixing, however, you might want to view only the
subset of "A..B" that are actually descendants of A, i.e. excluding the
ones marked with 'o'.  Introduce a new option --ancestry-path to compute
this set with "rev-list --ancestry-path A..B".

Note that in practice, you would build a fix immediately on top of A and
"git branch --contains A" will give the names of branches that you would
need to merge the fix into (i.e. topic, dev and master), so this may not
be worth paying the extra cost of postprocessing.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-04-21 01:15:33 -07:00
Junio C Hamano a86ed83cce Merge branch 'tr/notes-display'
* tr/notes-display:
  git-notes(1): add a section about the meaning of history
  notes: track whether notes_trees were changed at all
  notes: add shorthand --ref to override GIT_NOTES_REF
  commit --amend: copy notes to the new commit
  rebase: support automatic notes copying
  notes: implement helpers needed for note copying during rewrite
  notes: implement 'git notes copy --stdin'
  rebase -i: invoke post-rewrite hook
  rebase: invoke post-rewrite hook
  commit --amend: invoke post-rewrite hook
  Documentation: document post-rewrite hook
  Support showing notes from more than one notes tree
  test-lib: unset GIT_NOTES_REF to stop it from influencing tests

Conflicts:
	git-am.sh
	refs.c
2010-03-24 16:26:43 -07:00
Junio C Hamano 797d44343c Merge branch 'pb/log-first-parent-p-m'
* pb/log-first-parent-p-m:
  show --first-parent/-m: do not default to --cc
  show -c: show patch text
  revision: introduce setup_revision_opt
  t4013: add tests for log -p -m --first-parent
  git log -p -m: document -m and honor --first-parent
2010-03-24 16:25:39 -07:00
Dave Olszewski 8fcaca3ff2 don't use default revision if a rev was specified
If a revision is specified, it happens not to have any commits, don't
use the default revision.  By doing so, surprising and undesired
behavior can happen, such as showing the reflog for HEAD when a branch
was specified.

[jc: squashed a test from René]

Signed-off-by: Dave Olszewski <cxreg@pobox.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-03-13 21:23:43 -08:00
Thomas Rast 894a9d333e Support showing notes from more than one notes tree
With this patch, you can set notes.displayRef to a glob that points at
your favourite notes refs, e.g.,

[notes]
	displayRef = refs/notes/*

Then git-log and friends will show notes from all trees.

Thanks to Junio C Hamano for lots of feedback, which greatly
influenced the design of the entire series and this commit in
particular.

Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Acked-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-03-12 21:55:39 -08:00
Junio C Hamano b449005997 show -c: show patch text
Traditionally, "show" defaulted to "show --cc" (dense combined patch), but
asking for combined patch with "show -c" didn't turn the patch output
format on; the placement of this logic in setup_revisions() dates back to
cd2bdc5 (Common option parsing for "git log --diff" and friends,
2006-04-14).

This unfortunately cannot be done as a trivial change of "if dense
combined is asked, default to patch format" done in setup_revisions() to
"if any combined is asked, default to patch format", as "diff-tree -c"
needs to default to raw, while "diff-tree --cc" needs to default to patch,
and they share the codepath.  These command specific defaults are now
handled in the new "tweak" callback that can be customized by individual
command implementations.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-03-09 01:11:18 -08:00
Junio C Hamano 32962c9bd5 revision: introduce setup_revision_opt
So far the last parameter to setup_revisions() was to specify the default
ref when the command line did not give any (typically "HEAD").  This changes
it to take a pointer to a structure so that we can add other information without
touching too many codepaths in later patches.

There is no functionality change.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-03-09 01:11:18 -08:00
Junio C Hamano 1f54d693fd Merge branch 'jc/grep-author-all-match-implicit' into maint
* jc/grep-author-all-match-implicit:
  "log --author=me --grep=it" should find intersection, not union
2010-03-08 00:35:59 -08:00
Junio C Hamano 712d352577 Merge branch 'tr/maint-cherry-pick-list' into maint
* tr/maint-cherry-pick-list:
  cherry_pick_list: quit early if one side is empty
2010-03-04 22:26:44 -08:00
Junio C Hamano 80eac928ae Merge branch 'il/rev-glob' 2010-02-23 12:05:18 -08:00
Thomas Rast 36c079756f cherry_pick_list: quit early if one side is empty
The --cherry-pick logic starts by counting the commits on each side,
so that it can filter away commits on the bigger one.  However, so
far it missed an opportunity for optimization: it doesn't need to do
any work if either side is empty.

This in particular helps the common use-case 'git rebase -i HEAD~$n':
it internally uses --cherry-pick, but since HEAD~$n is a direct
ancestor the left side is always empty.

Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-20 10:33:11 -08:00
Junio C Hamano 105e473397 Fix log -g this@{upstream}
It showed the correct objects but walked a wrong reflog.
Again, tests are from Jeff King.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-26 13:49:50 -08:00
Junio C Hamano 80235ba79e "log --author=me --grep=it" should find intersection, not union
Historically, any grep filter in "git log" family of commands were taken
as restricting to commits with any of the words in the commit log message.
However, the user almost always want to find commits "done by this person
on that topic".  With "--all-match" option, a series of grep patterns can
be turned into a requirement that all of them must produce a match, but
that makes it impossible to ask for "done by me, on either this or that"
with:

	log --author=me --committer=him --grep=this --grep=that

because it will require both "this" and "that" to appear.

Change the "header" parser of grep library to treat the headers specially,
and parse it as:

	(all-match-OR (HEADER-AUTHOR me)
		      (HEADER-COMMITTER him)
		      (OR
		      	(PATTERN this)
			(PATTERN that) ) )

Even though the "log" command line parser doesn't give direct access to
the extended grep syntax to group terms with parentheses, this change will
cover the majority of the case the users would want.

This incidentally revealed that one test in t7002 was bogus.  It ran:

	log --author=Thor --grep=Thu --format='%s'

and expected (wrongly) "Thu" to match "Thursday" in the author/committer
date, but that would never match, as the timestamp in raw commit buffer
does not have the name of the day-of-the-week.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-25 19:28:13 -08:00
Junio C Hamano 78bc024ab0 Merge branch 'il/rev-glob'
* il/rev-glob:
  Documentation: improve description of --glob=pattern and friends
  rev-parse --branches/--tags/--remotes=pattern
  rev-parse --glob
2010-01-22 16:08:16 -08:00
Junio C Hamano c6ec7efdd4 Merge branch 'jl/submodule-diff'
* jl/submodule-diff:
  Performance optimization for detection of modified submodules
  git status: Show uncommitted submodule changes too when enabled
  Teach diff that modified submodule directory is dirty
  Show submodules as modified when they contain a dirty work tree
2010-01-22 16:08:10 -08:00
Junio C Hamano 67bc740721 Merge branch 'jc/maint-limit-note-output'
* jc/maint-limit-note-output:
  Fix "log --oneline" not to show notes
  Fix "log" family not to be too agressive about showing notes
2010-01-22 16:08:01 -08:00
Junio C Hamano 7dccadf363 Fix "log --oneline" not to show notes
This option should be treated pretty much the same as --format="%h %s".

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-21 14:57:41 -08:00
Junio C Hamano 66b2ed09c2 Fix "log" family not to be too agressive about showing notes
Giving "Notes" information in the default output format of "log" and
"show" is a sensible progress (the user has asked for it by having the
notes), but for some commands (e.g. "format-patch") spewing notes into the
formatted commit log message without being asked is too aggressive.

Enable notes output only for "log", "show", "whatchanged" by default and
only when the user didn't ask any specific --pretty/--format from the
command line; users can explicitly override this default with --show-notes
and --no-notes option.

Parts of tests are taken from Jeff King's fix.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-20 19:57:02 -08:00
Ilari Liusvaara b09fe971de rev-parse --branches/--tags/--remotes=pattern
Since local branch, tags and remote tracking branch namespaces are
most often used, add shortcut notations for globbing those in
manner similar to --glob option.

With this, one can express the "what I have but origin doesn't?"
as:

'git log --branches --not --remotes=origin'

Original-idea-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Ilari Liusvaara <ilari.liusvaara@elisanet.fi>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-20 12:30:25 -08:00
Ilari Liusvaara d08bae7e22 rev-parse --glob
Add --glob=<glob-pattern> option to rev-parse and everything that
accepts its options. This option matches all refs that match given
shell glob pattern (complete with some DWIM logic).

Example:

'git log --branches --not --glob=remotes/origin'

To show what you have that origin doesn't.

Signed-off-by: Ilari Liusvaara <ilari.liusvaara@elisanet.fi>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-20 12:29:05 -08:00
Jens Lehmann e3d42c4773 Performance optimization for detection of modified submodules
In the worst case is_submodule_modified() got called three times for
each submodule. The information we got from scanning the whole
submodule tree the first time can be reused instead.

New parameters have been added to diff_change() and diff_addremove(),
the information is stored in a new member of struct diff_filespec. Its
value is then reused instead of calling is_submodule_modified() again.

When no explicit "-dirty" is needed in the output the call to
is_submodule_modified() is not necessary when the submodules HEAD
already disagrees with the ref of the superproject, as this alone
marks it as modified. To achieve that, get_stat_data() got an extra
argument.

Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-18 17:28:21 -08:00
Junio C Hamano 3cc3fb7df6 Merge branch 'jc/1.7.0-diff-whitespace-only-status'
* jc/1.7.0-diff-whitespace-only-status:
  diff.c: fix typoes in comments
  Make test case number unique
  diff: Rename QUIET internal option to QUICK
  diff: change semantics of "ignore whitespace" options

Conflicts:
	diff.h
2009-12-26 14:03:18 -08:00
Junio C Hamano e61f25f3a6 Merge branch 'jc/log-stdin'
* jc/log-stdin:
  Add trivial tests for --stdin option to log family
  Make --stdin option to "log" family read also pathspecs
  setup_revisions(): do not call get_pathspec() too early
  Teach --stdin option to "log" family
  read_revision_from_stdin(): use strbuf

Conflicts:
	revision.c
2009-11-23 22:30:08 -08:00
Junio C Hamano 60da8b15c1 Make --stdin option to "log" family read also pathspecs
Similar to the command line arguments, after giving zero or more revs, you can
feed a line "--" and then feed pathspecs one at a time.

With this

	(
		echo ^maint
		echo --
		echo Documentation
	) | git log --stat --oneline --stdin master -- t

lists commits that touch Documentation/ or t/ between maint and master.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-11-20 15:10:47 -08:00
Junio C Hamano 5486ef0e6d setup_revisions(): do not call get_pathspec() too early
This is necessary because we will later allow pathspecs to be fed from the
standard input, and pathspecs taken from the command line (and converted
via get_pathspec() already) in revs->prune_data too early gets in the way
when we want to append from the standard input.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-11-20 15:10:47 -08:00
Junio C Hamano 8b3dce5650 Teach --stdin option to "log" family
Move the logic to read revs from standard input that rev-list knows about
from it to revision machinery, so that all the users of setup_revisions()
can feed the list of revs from the standard input when "--stdin" is used
on the command line.

Allow some users of the revision machinery that want different semantics
from the "--stdin" option to disable it by setting an option in the
rev_info structure.

This also cleans up the kludge made to bundle.c via cut and paste.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-11-20 15:10:29 -08:00
Junio C Hamano 63d564b300 read_revision_from_stdin(): use strbuf
It is so 2005 (and Linus ;-) to have a fixed 1000-byte buffer that
reads from the user.  Let's use strbuf to unlimit the input length.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-11-20 14:50:43 -08:00
Linus Torvalds ad3f9a71a8 Add '--bisect' revision machinery argument
I personally use "git bisect visualize" all the time when I bisect, but it
turns out that that is not a very flexible model. Sometimes I want to do
bisection based on all commits (no pathname limiting), but then visualize
the current bisection tree with just a few pathnames because I _suspect_
those pathnames are involved in the problem but am not totally sure about
them.

And at other times, I want to use other revision parsing logic, none of
which is available with "git bisect visualize".

So this adds "--bisect" as a revision parsing argument, and as a result it
just works with all the normal logging tools. So now I can just do

	gitk --bisect --simplify-by-decoration filename-here

etc.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-10-28 16:07:43 -07:00
Jeff King f4ea32f0b4 improve reflog date/number heuristic
When we show a reflog, we have two ways of naming the entry:
by sequence number (e.g., HEAD@{0}) or by date (e.g.,
HEAD@{10 minutes ago}). There is no explicit option to set
one or the other, but we guess based on whether or not the
user has provided us with a date format, showing them the
date version if they have done so, and the sequence number
otherwise.

This usually made sense if the use did something like "git
log -g --date=relative". However, it didn't make much sense
if the user set the date format using the log.date config
variable; in that case, all of their reflogs would end up as
dates.

This patch records the source of the date format and only
triggers the date-based view if --date= was given on the
command line.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2009-09-29 10:06:49 -07:00
Junio C Hamano 24343c6099 Merge branch 'as/maint-graph-interesting-fix'
* as/maint-graph-interesting-fix:
  Add tests for rev-list --graph with options that simplify history
  graph API: fix bug in graph_is_interesting()
2009-08-27 16:59:56 -07:00
Adam Simpkins beb5af43a6 graph API: fix bug in graph_is_interesting()
Previously, graph_is_interesting() did not behave quite the same way as
the code in get_revision().  As a result, it would sometimes think
commits were uninteresting, even though get_revision() would return
them.  This resulted in incorrect lines in the graph output.

This change creates a get_commit_action() function, which
graph_is_interesting() and simplify_commit() both now use to determine
if a commit will be shown.  It is identical to the old simplify_commit()
behavior, except that it never calls rewrite_parents().

This problem was reported by Santi Béjar.  The following command
would exhibit the problem before, but now works correctly:

  git log --graph --simplify-by-decoration --oneline v1.6.3.3

Previously git graph did not display the output for this command
correctly between f29ac4f and 66996ec, among other places.

Signed-off-by: Adam Simpkins <simpkins@facebook.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-08-21 12:41:25 -07:00
Lars Hjemli 33e7018c45 git-log: allow --decorate[=short|full]
Commit de435ac0 changed the behavior of --decorate from printing the
full ref (e.g., "refs/heads/master") to a shorter, more human-readable
version (e.g., just "master"). While this is nice for human readers,
external tools using the output from "git log" may prefer the full
version.

This patch introduces an extension to --decorate to allow the caller to
specify either the short or the full versions.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-08-18 13:14:17 -07:00
Junio C Hamano 90b1994170 diff: Rename QUIET internal option to QUICK
The option "QUIET" primarily meant "find if we have _any_ difference as
quick as possible and report", which means we often do not even have to
look at blobs if we know the trees are different by looking at the higher
level (e.g. "diff-tree A B").  As a side effect, because there is no point
showing one change that we happened to have found first, it also enables
NO_OUTPUT and EXIT_WITH_STATUS options, making the end result look quiet.

Rename the internal option to QUICK to reflect this better; it also makes
grepping the source tree much easier, as there are other kinds of QUIET
option everywhere.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-07-29 10:22:39 -07:00
Linus Torvalds f222abdeec Make 'git show' more useful
For some reason, I ended up doing

	git show HEAD~5..

as an odd way of asking for a log. I realize I should just have used "git
log", but at the same time it does make perfect conceptual sense. After
all, you _could_ have done

	git show HEAD HEAD~1 HEAD~2 HEAD~3 HEAD~4

and saying "git show HEAD~5.." is pretty natural. It's not like "git show"
only ever showed a single commit (or other object) before either! So
conceptually, giving a commit range is a very sensible operation, even
though you'd traditionally have used "git log" for that.

However, doing that currently results in an error

	fatal: object ranges do not make sense when not walking revisions

which admittedly _also_ makes perfect sense - from an internal git
implementation standpoint in 'revision.c'.

However, I think that asking to show a range makes sense to a user, while
saying "object ranges no not make sense when not walking revisions" only
makes sense to a git developer.

So on the whole, of the two different "makes perfect sense" behaviors, I
think I originally picked the wrong one. And quite frankly, I don't really
see anybody actually _depending_ on that error case. So why not change it?

So rather than error out, just turn that non-walking error case into a
"silently turn on walking" instead.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-07-14 13:50:29 -07:00
Linus Torvalds b8e8db281c git log: add '--merges' flag to match '--no-merges'
I do various statistics on git, and one of the things I look at is merges,
because they are often interesting events to count ("how many merges vs
how much 'real development'" kind of statistics). And you can do it with
some fairly straightforward scripting, ie

	git rev-list --parents HEAD |
		grep ' .* ' |
		git diff-tree --always -s --pretty=oneline --stdin |
		less -S

will do it.

But I finally got irritated with the fact that we can skip merges with
'--no-merges', but we can't do the trivial reverse operation.

So this just adds a '--merges' flag that _only_ shows merges. Now you can
do the above with just a

	git log --merges --pretty=oneline

which is a lot simpler. It also means that we automatically get a lot of
statistics for free, eg

	git shortlog -ns --merges

does exactly what you'd want it to do.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-06-29 12:32:51 -07:00
Linus Torvalds ceff8e7ade Clean up and simplify rev_compare_tree()
This simplifies the logic of rev_compare_tree() by removing a special
case.

It does so by turning the special case of finding a diff to be "all new
files" into a more generic case of "all new" vs "all removed" vs "mixed
changes", so now the code is actually more powerful and more generic, and
the added symmetry actually makes it simpler too.

This makes no changes to any existing behavior, but apart from the
simplification it does make it possible to some day care about whether all
changes were just deletions if we want to. Which we may well want to for
merge handling.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-06-03 00:49:50 -07:00
Mike Ralphson 3ea3c215c0 Fix typos / spelling in comments
Signed-off-by: Mike Ralphson <mike@abacus.co.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-04-22 19:02:12 -07:00
Junio C Hamano 9824a388e5 Merge branch 'lt/pack-object-memuse'
* lt/pack-object-memuse:
  show_object(): push path_name() call further down
  process_{tree,blob}: show objects without buffering

Conflicts:
	builtin-pack-objects.c
	builtin-rev-list.c
	list-objects.c
	list-objects.h
	upload-pack.c
2009-04-18 14:46:17 -07:00
Linus Torvalds cf2ab916af show_object(): push path_name() call further down
In particular, pushing the "path_name()" call _into_ the show() function
would seem to allow

 - more clarity into who "owns" the name (ie now when we free the name in
   the show_object callback, it's because we generated it ourselves by
   calling path_name())

 - not calling path_name() at all, either because we don't care about the
   name in the first place, or because we are actually happy walking the
   linked list of "struct name_path *" and the last component.

Now, I didn't do that latter optimization, because it would require some
more coding, but especially looking at "builtin-pack-objects.c", we really
don't even want the whole pathname, we really would be better off with the
list of path components.

Why? We use that name for two things:
 - add_preferred_base_object(), which actually _wants_ to traverse the
   path, and now does it by looking for '/' characters!
 - for 'name_hash()', which only cares about the last 16 characters of a
   name, so again, generating the full name seems to be just unnecessary
   work.

Anyway, so I didn't look any closer at those things, but it did convince
me that the "show_object()" calling convention was crazy, and we're
actually better off doing _less_ in list-objects.c, and giving people
access to the internal data structures so that they can decide whether
they want to generate a path-name or not.

This patch does that, and then for people who did use the name (even if
they might do something more clever in the future), it just does the
straightforward "name = path_name(path, component); .. free(name);" thing.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-04-12 17:28:31 -07:00
Linus Torvalds 8d2dfc49b1 process_{tree,blob}: show objects without buffering
Here's a less trivial thing, and slightly more dubious one.

I was looking at that "struct object_array objects", and wondering why we
do that. I have honestly totally forgotten. Why not just call the "show()"
function as we encounter the objects? Rather than add the objects to the
object_array, and then at the very end going through the array and doing a
'show' on all, just do things more incrementally.

Now, there are possible downsides to this:

 - the "buffer using object_array" _can_ in theory result in at least
   better I-cache usage (two tight loops rather than one more spread out
   one). I don't think this is a real issue, but in theory..

 - this _does_ change the order of the objects printed. Instead of doing a
   "process_tree(revs, commit->tree, &objects, NULL, "");" in the loop
   over the commits (which puts all the root trees _first_ in the object
   list, this patch just adds them to the list of pending objects, and
   then we'll traverse them in that order (and thus show each root tree
   object together with the objects we discover under it)

   I _think_ the new ordering actually makes more sense, but the object
   ordering is actually a subtle thing when it comes to packing
   efficiency, so any change in order is going to have implications for
   packing. Good or bad, I dunno.

 - There may be some reason why we did it that odd way with the object
   array, that I have simply forgotten.

Anyway, now that we don't buffer up the objects before showing them
that may actually result in lower memory usage during that whole
traverse_commit_list() phase.

This is seriously not very deeply tested. It makes sense to me, it seems
to pass all the tests, it looks ok, but...

Does anybody remember why we did that "object_array" thing? It used to be
an "object_list" a long long time ago, but got changed into the array due
to better memory usage patterns (those linked lists of obejcts are
horrible from a memory allocation standpoint). But I wonder why we didn't
do this back then. Maybe there's a reason for it.

Or maybe there _used_ to be a reason, and no longer is.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-04-12 17:28:31 -07:00
Junio C Hamano 3c91bf6805 Merge branch 'jc/maint-1.6.0-keep-pack'
* jc/maint-1.6.0-keep-pack:
  pack-objects: don't loosen objects available in alternate or kept packs
  t7700: demonstrate repack flaw which may loosen objects unnecessarily
  Remove --kept-pack-only option and associated infrastructure
  pack-objects: only repack or loosen objects residing in "local" packs
  git-repack.sh: don't use --kept-pack-only option to pack-objects
  t7700-repack: add two new tests demonstrating repacking flaws

Conflicts:
	t/t7700-repack.sh
2009-04-01 22:34:19 -07:00
Brandon Casey 4d6acb7041 Remove --kept-pack-only option and associated infrastructure
This option to pack-objects/rev-list was created to improve the -A and -a
options of repack.  It was found to be lacking in that it did not provide
the ability to differentiate between local and non-local kept packs, and
found to be unnecessary since objects residing in local kept packs can be
filtered out by the --honor-pack-keep option.

Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-20 13:32:33 -07:00
Junio C Hamano aec813062b Merge branch 'jc/maint-1.6.0-keep-pack'
* jc/maint-1.6.0-keep-pack:
  is_kept_pack(): final clean-up
  Simplify is_kept_pack()
  Consolidate ignore_packed logic more
  has_sha1_kept_pack(): take "struct rev_info"
  has_sha1_pack(): refactor "pretend these packs do not exist" interface
  git-repack: resist stray environment variable
2009-03-11 13:49:56 -07:00
Junio C Hamano 69e020ae00 is_kept_pack(): final clean-up
Now is_kept_pack() is just a member lookup into a structure, we can write
it as such.

Also rewrite the sole caller of has_sha1_kept_pack() to switch on the
criteria the callee uses (namely, revs->kept_pack_only) between calling
has_sha1_kept_pack() and has_sha1_pack(), so that these two callees do not
have to take a pointer to struct rev_info as an argument.

This removes the header file dependency issue temporarily introduced by
the earlier commit, so we revert changes associated to that as well.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-02-28 01:06:06 -08:00
Junio C Hamano 03a9683d22 Simplify is_kept_pack()
This removes --unpacked=<packfile> parameter from the revision parser, and
rewrites its use in git-repack to pass a single --kept-pack-only option
instead.

The new --kept-pack-only option means just that.  When this option is
given, is_kept_pack() that used to say "not on the --unpacked=<packfile>
list" now says "the packfile has corresponding .keep file".

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-02-28 01:06:06 -08:00
Junio C Hamano b8431b033f has_sha1_kept_pack(): take "struct rev_info"
Its "ignore_packed" parameter always comes from struct rev_info.  This
patch makes the function take a pointer to the surrounding structure, so
that the refactoring in the next patch becomes easier to review.

There is an unfortunate header file dependency and the easiest workaround
is to temporarily move the function declaration from cache.h to
revision.h; this will be moved back to cache.h once the function loses
this "ignore_packed" parameter altogether in the later part of the
series.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-02-28 01:06:06 -08:00
Junio C Hamano cd673c1f17 has_sha1_pack(): refactor "pretend these packs do not exist" interface
Most of the callers of this function except only one pass NULL to its last
parameter, ignore_packed.

Introduce has_sha1_kept_pack() function that has the function signature
and the semantics of this function, and convert the sole caller that does
not pass NULL to call this new function.

All other callers and has_sha1_pack() lose the ignore_packed parameter.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-02-28 01:06:06 -08:00
Nanako Shiraishi de84accc59 Add --oneline that is a synonym to "--pretty=oneline --abbrev-commit"
These two are often used together but are too long to type.

Signed-off-by: Nanako Shiraishi <nanako3@lavabit.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-02-24 23:53:40 -08:00
Nanako Shiraishi 3a4c1a5e21 Add --format that is a synonym to --pretty
Some people prefer to call the pretty-print styles "format", and get
annoyed to see "git log --format=short" fail.  Introduce it as a synonym
to --pretty so that both can be used.

Signed-off-by: Nanako Shiraishi <nanako3@lavabit.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-02-24 23:53:36 -08:00
Junio C Hamano aff4e8dc21 Merge branch 'maint'
* maint:
  revision traversal and pack: notice and die on missing commit
2009-02-11 02:00:22 -08:00
Junio C Hamano 268c015495 Merge branch 'maint-1.5.6' into maint
* maint-1.5.6:
  revision traversal and pack: notice and die on missing commit
2009-02-11 02:00:07 -08:00
Junio C Hamano afce435000 Merge branch 'maint-1.5.5' into maint-1.5.6
* maint-1.5.5:
  revision traversal and pack: notice and die on missing commit

Conflicts:
	revision.c
2009-02-11 01:41:22 -08:00
Junio C Hamano 92798702cf Merge branch 'maint-1.5.4' into maint-1.5.5
* maint-1.5.4:
  revision traversal and pack: notice and die on missing commit
2009-02-11 01:40:12 -08:00
Junio C Hamano ed62089c1c revision traversal and pack: notice and die on missing commit
cc0e6c5 (Handle return code of parse_commit in revision machinery,
2007-05-04) attempted to tighten error checking in the revision machinery,
but it wasn't enough.  When get_revision_1() was asked for the next commit
to return, it tries to read and simplify the parents of the commit to be
returned, but an error while doing so was silently ignored and reported as
a truncated history to the caller instead.

This resulted in an early end of "git log" output or a pack that lacks
older commits from "git pack-objects", without any error indication in the
exit status from these commands, even though the underlying parse_commit()
issues an error message to the end user.

Note that the codepath in add_parents_list() that paints parents of an
UNINTERESTING commit UNINTERESTING silently ignores the error when
parse_commit() fails; this is deliberate and in line with aeeae1b
(revision traversal: allow UNINTERESTING objects to be missing,
2009-01-27).

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-02-11 01:29:52 -08:00
Junio C Hamano 8abc61880d Merge branch 'js/maint-all-implies-HEAD' into maint
* js/maint-all-implies-HEAD:
  bundle: allow the same ref to be given more than once
  revision walker: include a detached HEAD in --all
2009-02-05 17:54:12 -08:00
Junio C Hamano 2d40cadc25 Merge branch 'jc/maint-allow-uninteresting-missing'
* jc/maint-allow-uninteresting-missing:
  revision traversal: allow UNINTERESTING objects to be missing
2009-01-31 18:08:22 -08:00
Junio C Hamano aeeae1b771 revision traversal: allow UNINTERESTING objects to be missing
Most of the existing codepaths were meant to treat missing uninteresting
objects to be a silently ignored non-error, but there were a few places
in handle_commit() and add_parents_to_list(), which are two key functions
in the revision traversal machinery, that cared:

 - When a tag refers to an object that we do not have, we barfed.  We
   ignore such a tag if it is painted as UNINTERESTING with this change.

 - When digging deeper into the ancestry chain of a commit that is already
   painted as UNINTERESTING, in order to paint its parents UNINTERESTING,
   we barfed if parse_parent() for a parent commit object failed.  We can
   ignore such a parent commit object.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-01-28 11:00:28 -08:00
Junio C Hamano f18e6bef23 Merge branch 'js/maint-all-implies-HEAD'
* js/maint-all-implies-HEAD:
  bundle: allow the same ref to be given more than once
  revision walker: include a detached HEAD in --all
2009-01-25 17:13:02 -08:00
Johannes Schindelin f0298cf1c6 revision walker: include a detached HEAD in --all
When HEAD is detached, --all should list it, too, logically, as a
detached HEAD is by definition a temporary, unnamed branch.

It is especially necessary to list it when garbage collecting, as
the detached HEAD would be trashed.

Noticed by Thomas Rast.

Note that this affects creating bundles with --all; I contend that it
is a good change to add the HEAD, so that cloning from such a bundle
will give you a current branch.  However, I had to fix t5701 as it
assumed that --all does not imply HEAD.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-01-17 22:01:37 -08:00
Junio C Hamano ea4f2bd39d Merge branch 'maint'
* maint:
  Documentation: git-svn: fix example for centralized SVN clone
  Documentation: fix links to "everyday.html"
  revision.c: use proper data type in call to sizeof() within xrealloc
2008-11-14 22:12:38 -08:00
Brandon Casey d0f19d0471 revision.c: use proper data type in call to sizeof() within xrealloc
A type char** was being used instead of char*.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-11-14 21:41:19 -08:00
Linus Torvalds 78892e3261 revision traversal: '--simplify-by-decoration'
With this, you can simplify history not by the contents of the tree, but
whether a commit has been named (ie it's referred to by some branch or
tag) or not.

This makes it possible to see the relationship between different named
commits, without actually seeing any of the details.

When used with pathspec, you would get the usual view that is limited to
the commits that change the contents of the tree plus commits that are
named.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-11-04 00:45:34 -08:00
Linus Torvalds 3a5e860815 revision: make tree comparison functions take commits rather than trees
This will make it easier to do various clever things that don't depend
on the pure tree contents.  It also makes the parameter passing much
simpler - the callers doesn't really look at trees anywhere else, and
it's really the function that should look at the low-level details.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-11-04 00:08:12 -08:00
Linus Torvalds 0f3a290b89 Add a 'source' decorator for commits
We already support decorating commits by tags or branches that point to
them, but especially when we are looking at multiple branches together,
we sometimes want to see _how_ we reached a particular commit.

We can abuse the '->util' field in the commit to keep track of that as
we walk the commit lists, and get a reasonably useful view into which
branch or tag first reaches that commit.

Of course, if the commit is reachable through multiple sources (which is
common), our particular choice of "first" reachable is entirely random
and depends on the particular path we happened to follow.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-11-04 00:08:03 -08:00
Junio C Hamano b805ef08e6 Merge branch 'tr/rev-list-reverse'
* tr/rev-list-reverse:
  t6013: replace use of 'tac' with equivalent Perl
  rev-list: fix --reverse interaction with --parents
2008-09-18 20:18:37 -07:00
Junio C Hamano 80d12c23de Merge branch 'jc/maint-log-grep'
* jc/maint-log-grep:
  log --author/--committer: really match only with name part
  diff --cumulative is a sub-option of --dirstat
  bash completion: Hide more plumbing commands
2008-09-04 22:30:44 -07:00
Junio C Hamano a4d7d2c6db log --author/--committer: really match only with name part
When we tried to find commits done by AUTHOR, the first implementation
tried to pattern match a line with "^author .*AUTHOR", which later was
enhanced to strip leading caret and look for "^author AUTHOR" when the
search pattern was anchored at the left end (i.e. --author="^AUTHOR").

This had a few problems:

 * When looking for fixed strings (e.g. "git log -F --author=x --grep=y"),
   the regexp internally used "^author .*x" would never match anything;

 * To match at the end (e.g. "git log --author='google.com>$'"), the
   generated regexp has to also match the trailing timestamp part the
   commit header lines have.  Also, in order to determine if the '$' at
   the end means "match at the end of the line" or just a literal dollar
   sign (probably backslash-quoted), we would need to parse the regexp
   ourselves.

An earlier alternative tried to make sure that a line matches "^author "
(to limit by field name) and the user supplied pattern at the same time.
While it solved the -F problem by introducing a special override for
matching the "^author ", it did not solve the trailing timestamp nor tail
match problem.  It also would have matched every commit if --author=author
was asked for, not because the author's email part had this string, but
because every commit header line that talks about the author begins with
that field name, regardleses of who wrote it.

Instead of piling more hacks on top of hacks, this rethinks the grep
machinery that is used to look for strings in the commit header, and makes
sure that (1) field name matches literally at the beginning of the line,
followed by a SP, and (2) the user supplied pattern is matched against the
remainder of the line, excluding the trailing timestamp data.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-09-04 22:21:56 -07:00
Junio C Hamano 01914577ed Merge branch 'tr/filter-branch'
* tr/filter-branch:
  revision --simplify-merges: make it a no-op without pathspec
  revision --simplify-merges: do not leave commits unprocessed
  revision --simplify-merges: use decoration instead of commit->util field
  Documentation: rev-list-options: move --simplify-merges documentation
  filter-branch: use --simplify-merges
  filter-branch: fix ref rewriting with --subdirectory-filter
  filter-branch: Extend test to show rewriting bug
  Topo-sort before --simplify-merges
  revision traversal: show full history with merge simplification
  revision.c: whitespace fix
2008-09-02 17:47:13 -07:00
Thomas Rast 498bcd3159 rev-list: fix --reverse interaction with --parents
--reverse did not interact well with --parents, as the included test
case shows: in a history like

  A--B.
   \   \
    `C--M--D

the command

  git rev-list --reverse --parents --full-history HEAD

erroneously lists D as having no parents at all.  (Without --reverse,
it correctly lists M.)

This is caused by the machinery driving --reverse: it first grabs all
commits through the normal routines, then runs them through the same
routines again, effectively simplifying them twice.

Fix this by moving the --reverse one level up, into get_revision().
This way we can cleanly grab all commits via the normal calls, then
just pop them off the list one by one without interfering with
get_revision_internal().

Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-29 22:20:51 -07:00
Jeff King 0843acfd2c Fix "git log -i --grep"
This has been broken in v1.6.0 due to the reorganization of
the revision option parsing code. The "-i" is completely
ignored, but works fine in "git log --grep -i".

What happens is that the code for "-i" looks for
revs->grep_filter; if it is NULL, we do nothing, since there
are no grep filters. But that is obviously not correct,
since we want it to influence the later --grep option. Doing
it the other way around works, since "-i" just impacts the
existing grep_filter option.

Instead, we now always initialize the grep_filter member and
just fill in options and patterns as we get them. This means
that we can no longer check grep_filter for NULL, but
instead must check the pattern list to see if we have any
actual patterns.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-24 23:28:02 -07:00
Junio C Hamano 5eac739e05 revision --simplify-merges: make it a no-op without pathspec
When we are not pruning there is no reason to run the merge
simplification.

Also avoid running topo-order sort twice.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-18 00:39:47 -07:00
Junio C Hamano 53030f8d11 revision --simplify-merges: do not leave commits unprocessed
When we still do not know how parents of a commit simplify to, we should
defer processing of the commit, not discard it.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-18 00:37:34 -07:00
Junio C Hamano faf0156b27 revision --simplify-merges: use decoration instead of commit->util field
The users of revision walking machinery may want to use the util pointer
for their own use.  Use decoration to hold the data needed during merge
simplification instead.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-14 15:45:16 -07:00
Junio C Hamano 1e040c0b05 Merge branch 'ag/rewrite_one' into maint
* ag/rewrite_one:
  Fix quadratic performance in rewrite_one.
2008-08-07 11:40:12 -07:00
Junio C Hamano 6534703059 Topo-sort before --simplify-merges
This makes the algorithm more honest about what it is doing.

We start from an already limited, topo-sorted list, and postprocess
it by simplifying the irrelevant merges away.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-03 17:47:16 -07:00
Junio C Hamano 6546b5931e revision traversal: show full history with merge simplification
The --full-history traversal keeps all merges in addition to non-merge
commits that touch paths in the given pathspec.  This is useful to view
both sides of a merge in a topology like this:

        A---M---o
       /   /
   ---O---B

even when A and B makes identical change to the given paths.  The revision
traversal without --full-history aims to come up with the simplest history
to explain the final state of the tree, and one of the side branches can
be pruned away.

The behaviour to keep all merges however is inconvenient if neither A nor
B touches the paths we are interested in.  --full-history reduces the
topology to:

   ---O---M---o

in such a case, without removing M.

This adds a post processing phase on top of --full-history traversal to
remove needless merges from the resulting history.

The idea is to compute, for each commit in the "full history" result set,
the commit that should replace it in the simplified history.  The commit
to replace it in the final history is determined as follows:

 * In any case, we first figure out the replacement commits of parents of
   the commit we are looking at.  The commit we are looking at is
   rewritten as if the replacement commits of its original parents are its
   parents.  While doing so, we reduce the redundant parents from the
   rewritten parent list by not just removing the identical ones, but also
   removing a parent that is an ancestor of another parent.

 * After the above parent simplification, if the commit is a root commit,
   an UNINTERESTING commit, a merge commit, or modifies the paths we are
   interested in, then the replacement commit of the commit is itself.  In
   other words, such a commit is not dropped from the final result.

The first point above essentially means that the history is rewritten in
the bottom up direction.  We can rewrite the parent list of a commit only
after we know how all of its parents are rewritten.  This means that the
processing needs to happen on the full history (i.e. after limit_list()).

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-02 00:33:15 -07:00
Junio C Hamano 60d30b02fc revision.c: whitespace fix
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-02 00:33:14 -07:00
Pierre Habouzit 0fe8c13810 Allow "non-option" revision options in parse_option-enabled commands
Commands which use parse_options() but also call setup_revisions()
must do their parsing in a two step process:

  1. first, they parse all options. Anything unknown goes to
     parse_revision_opt() (which calls handle_revision_opt), which
     may claim the option or say "I don't recognize this"

  2. the non-option remainder goes to setup_revisions() to
     actually get turned into revisions

Some revision options are "non-options" in that they must be
parsed in order with their revision counterparts in
setup_revisions().  For example, "--all" functions as a
pseudo-option expanding to all refs, and "--no-walk" affects refs
after it on the command line, but not before. The revision option
parser in step 1 recognizes such options and sets them aside for
later parsing by setup_revisions().

However, the return value used from handle_revision_opt indicated
"I didn't recognize this", which was wrong. It did, and it took
appropriate action (even though that action was just deferring it
for later parsing). Thus it should return "yes, I recognized
this."

Previously, these pseudo-options generated an error when used with
parse_options parsers (currently just blame and shortlog). With
this patch, they should work fine, enabling things like "git
shortlog --all".

Signed-off-by: Jeff King <peff@peff.net>
Acked-By: Pierre Habouzit <madcoder@debian.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-31 11:35:17 -07:00
Junio C Hamano 88bbda08d7 Merge branch 'maint'
* maint:
  Start preparing 1.5.6.4 release notes
  git fetch-pack: do not complain about "no common commits" in an empty repo
  rebase-i: keep old parents when preserving merges
  t7600-merge: Use test_expect_failure to test option parsing
  Fix buffer overflow in prepare_attr_stack
  Fix buffer overflow in git diff
  Fix buffer overflow in git-grep
  git-cvsserver: fix call to nonexistant cleanupWorkDir()
  Documentation/git-cherry-pick.txt et al.: Fix misleading -n description

Conflicts:
	RelNotes
2008-07-16 17:10:28 -07:00
Dmitry Potapov fd55a19eb1 Fix buffer overflow in git diff
If PATH_MAX on your system is smaller than a path stored, it may cause
buffer overflow and stack corruption in diff_addremove() and diff_change()
functions when running git-diff

Signed-off-by: Dmitry Potapov <dpotapov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-16 14:03:24 -07:00
Junio C Hamano c158cae110 Merge branch 'ag/rewrite_one'
* ag/rewrite_one:
  Fix quadratic performance in rewrite_one.
2008-07-15 18:59:48 -07:00
Junio C Hamano fa6200fc02 Merge branch 'ph/parseopt-step-blame'
* ph/parseopt-step-blame:
  revisions: refactor handle_revision_opt into parse_revision_opt.
  git-shortlog: migrate to parse-options partially.
  git-blame: fix lapsus
  git-blame: migrate to incremental parse-option [2/2]
  git-blame: migrate to incremental parse-option [1/2]
  revisions: split handle_revision_opt() from setup_revisions()
  parse-opt: add PARSE_OPT_KEEP_ARGV0 parser option.
  parse-opt: fake short strings for callers to believe in.
  parse-opt: do not print errors on unknown options, return -2 intead.
  parse-opt: create parse_options_step.
  parse-opt: Export a non NORETURN usage dumper.
  parse-opt: have parse_options_{start,end}.
  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
2008-07-13 15:16:35 -07:00
Alexander N. Gavrilov fce87ae538 Fix quadratic performance in rewrite_one.
Parent commits are usually older than their children. Thus,
on each iteration of the loop in rewrite_one, add_parents_to_list
traverses all commits previously processed by the loop.
It performs very poorly in case of very long rewrite chains.

Signed-off-by: Alexander Gavrilov <angavrilov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-13 13:46:56 -07:00
Pierre Habouzit 6b61ec0564 revisions: refactor handle_revision_opt into parse_revision_opt.
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>
2008-07-09 15:14:11 -07:00
Pierre Habouzit 02e542206f revisions: split handle_revision_opt() from setup_revisions()
Add two fields to struct rev_info:

 - .def to store --default argument; and
 - .show_merge 1-bit field.

handle_revision_opt() is able to deal with any revision option, and
consumes them, and leaves revision arguments or pseudo arguments
(like --all, --not, ...) in place.

For now setup_revisions() does a pass of handle_revision_opt() again
so that code not using it in a parse-opt parser still work the same.

Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-08 15:29:40 -07:00
Junio C Hamano 8bb65883d1 Merge branch 'jc/blame' (early part) into HEAD
* '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
2008-07-08 15:25:44 -07:00
Adam Brewster 1fc561d169 Move read_revisions_from_stdin from builtin-rev-list.c to revision.c
Reading rev-list parameters from the command line can be reused by
commands other than rev-list.  Move this function to more "library-ish"
place to promote code reuse.

Signed-off-by: Adam Brewster <asb@bu.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-05 17:30:58 -07:00
Junio C Hamano 48ded91674 log --pretty: do not accept bogus "--prettyshort"
... nor bogus "format.pretty = '=short'".  Both are syntax errors.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-05-25 20:29:07 -07:00
Junio C Hamano 37869f40a8 log --graph: do not accept log --graphbogus
An obvious fix to the argument parser.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-05-25 20:28:58 -07:00
Adam Simpkins 4603ec0f96 get_revision(): honor the topo_order flag for boundary commits
Now get_revision() sorts the boundary commits when topo_order is set.
Since sort_in_topological_order() takes a struct commit_list, it first
places the boundary commits into revs->commits.

Signed-off-by: Adam Simpkins <adam@adamsimpkins.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-05-25 12:22:24 -07:00
Adam Simpkins 3c68d67b57 Fix output of "git log --graph --boundary"
Previously the graphing API wasn't aware of the revs->boundary flag, and
it always assumed that commits marked UNINTERESTING would not be
displayed.  As a result, the boundary commits were printed at the end of
the log output, but they didn't have any branch lines connecting them to
their children in the graph.

There was also another bug in the get_revision() code that caused
graph_update() to be called twice on the first boundary commit.  This
caused the graph API to think that a commit had been skipped, and print
a "..." line in the output.

Signed-off-by: Adam Simpkins <adam@adamsimpkins.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-05-25 12:16:56 -07:00
Adam Simpkins 7528f27dd6 log --graph --left-right: show left/right information in place of '*'
With the --graph option, the graph already outputs 'o' instead of '*'
for boundary commits.  Make it emit '<' or '>' when --left-right is
specified.

(This change also disables the '^' prefix for UNINTERESTING commits.
The graph code currently doesn't print anything special for these
commits, since it assumes no UNINTERESTING, non-BOUNDARY commits are
displayed.  This is potentially a bug if UNINTERESTING non-BOUNDARY
commits can actually be displayed via some code path.)

[jc: squashed the left-right change from Dscho and Adam's fixup into one]

Signed-off-by: Adam Simpkins <adam@adamsimpkins.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-05-25 12:06:52 -07:00
Junio C Hamano f0abea652b Merge branch 'sv/first-parent'
* sv/first-parent:
  revision.c: really honor --first-parent
  Simplify and fix --first-parent implementation
2008-05-21 14:15:52 -07:00
Lars Hjemli ad1012ebde revision.c: really honor --first-parent
In add_parents_to_list, if any parent of a revision had already been
SEEN, the current code would continue with the next parent, skipping
the test for --first-parent. This patch inverts the test for SEEN so
that the test for --first-parent is always performed.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-05-12 16:24:51 -07:00
Adam Simpkins 7fefda5cc7 log and rev-list: add --graph option
This new option causes a text-based representation of the history to be
printed to the left of the normal output.

Signed-off-by: Adam Simpkins <adam@adamsimpkins.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-05-05 18:46:35 -07:00
Adam Simpkins 885cf80899 revision API: split parent rewriting and parent printing options
This change allows parent rewriting to be performed without causing
the log and rev-list commands to print the parents.

Signed-off-by: Adam Simpkins <adam@adamsimpkins.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-05-05 17:38:22 -07:00
Stephen R. van den Berg d9c292e8bb Simplify and fix --first-parent implementation
The purpose of --first-parent is to view the tree without looking at
side branche.  This is accomplished by pretending there are no other
parents than the first parent when encountering a merge.

The current code marks the other parents as seen, which means that the tree
traversal will behave differently depending on the order merges are handled.

When a fast forward is artificially recorded as a merge,

       -----
      /     \
 D---E---F---G master

the current first-parent code considers E to be seen and stops the
traversal after showing G and F.

Signed-off-by: Stephen R. van den Berg <srb@cuci.nl>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-04-29 17:47:37 -07:00
Junio C Hamano d52301630f Merge branch 'jc/terminator-separator'
* jc/terminator-separator:
  log: teach "terminator" vs "separator" mode to "--pretty=format"
2008-04-19 21:10:54 -07:00
Junio C Hamano f35f5603f4 revision traversal: --children option
This adds a new --children option to the revision machinery.  In addition
to the list of parents, child commits of each commit are computed and
stored as a decoration to each commit.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-04-12 19:41:29 -07:00
Junio C Hamano eed81838f0 Merge branch 'maint-1.5.4' into maint
* maint-1.5.4:
  bisect: fix bad rev checking in "git bisect good"
  revision.c: make --date-order overriddable
  Fix section about backdating tags in the git-tag docs
  Document option --only of git commit
  Documentation/git-request-pull: Fixed a typo ("send" -> "end")
2008-04-11 23:55:55 -07:00
Michele Ballabio a710522bfc revision.c: make --date-order overriddable
Jan Engelhardt noticed that while --topo-order can be overridden by a
subsequent --date-order, the reverse was not possible. That's because
setup_revisions() failed to set revs->lifo properly.

Signed-off-by: Michele Ballabio <barra_cuda@katamail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-04-11 23:01:33 -07:00
Junio C Hamano 4da45bef56 log: teach "terminator" vs "separator" mode to "--pretty=format"
This attached patch introduces a single bit "use_terminator" in "struct
rev_info", which is normally false (i.e. most formats use separator
semantics) but by flipping it to true, you can ask for terminator
semantics just like oneline format does.

The function get_commit_format(), which is what parses "--pretty=" option,
now takes a pointer to "struct rev_info" and updates its commit_format and
use_terminator fields.  It used to return the value of type "enum
cmit_fmt", but all the callers assigned it to rev->commit_format.

There are only two cases the code turns use_terminator on.  Obviously, the
traditional oneline format (--pretty=oneline) is one of them, and the new
case is --pretty=tformat:... that acts like --pretty=format:... but flips
the bit on.

With this, "--pretty=tformat:%H %s" acts like --pretty=oneline.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-04-10 03:25:03 -07:00
Linus Torvalds 7d004199d1 Make revision limiting more robust against occasional bad commit dates
The revision limiter uses the commit date to decide when it has seen
enough commits to finalize the revision list, but that can get confused
if there are incorrect dates far in the past on some commits.

This makes the logic a bit more robust by

 - we always walk an extra SLOP commits from the source list even if we
   decide that the source list is probably all done (unless the source is
   entirely empty, of course, because then we really can't do anything at
   all)

 - we keep track of the date of the last commit we added to the
   destination list (this will *generally* be the oldest entry we've seen
   so far)

 - we compare that with the youngest entry (the first one) of the source
   list, and if the destination is older than the source, we know we want
   to look at the source.

which causes occasional date mishaps to be handled cleanly.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-03-19 01:42:35 -07:00
Junio C Hamano d2c425aa2b Merge branch 'jc/maint-log-merge-left-right'
* jc/maint-log-merge-left-right:
  Fix "git log --merge --left-right"
2008-03-02 15:12:04 -08:00
Uwe Kleine-König a5aa930d50 rev-list: add --branches, --tags and --remotes
These flags are already known to rev-parse and have the same meaning.

This patch allows to run gitk as follows:

	gitk --branches --not --remotes

to show only your local work.

Signed-off-by: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-29 00:00:29 -08:00
Junio C Hamano e82447b1df Fix "git log --merge --left-right"
The command did not reject the combination of these options, but
did not show left/right markers.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-27 15:42:05 -08:00
Junio C Hamano 860cc3a4f9 Merge branch 'jc/diff-relative'
* jc/diff-relative:
  diff --relative: help working in a bare repository
  diff --relative: output paths as relative to the current subdirectory
2008-02-27 11:55:28 -08:00
Jakub Narebski dc1c0fffd3 Add '--fixed-strings' option to "git log --grep" and friends
Add support for -F | --fixed-strings option to "git log --grep"
and friends: "git log --author", "git log --committer=<pattern>".
Code is based on implementation of this option in "git grep".

Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-26 23:59:49 -08:00
Junio C Hamano 428ae2eff0 Merge branch 'lt/revision-walker'
* lt/revision-walker:
  Add "--show-all" revision walker flag for debugging
2008-02-20 16:13:24 -08:00
Martin Koegler 9684afd967 revision.c: handle tag->tagged == NULL
Signed-off-by: Martin Koegler <mkoegler@auto.tuwien.ac.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-18 19:25:26 -08:00
Martin Koegler c1ee9013ad mark_blob/tree_uninteresting: check for NULL
As these functions are directly called with the result
from lookup_tree/blob, they must handle NULL.

Signed-off-by: Martin Koegler <mkoegler@auto.tuwien.ac.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-18 19:20:20 -08:00
Linus Torvalds 3131b71301 Add "--show-all" revision walker flag for debugging
It's really not very easy to visualize the commit walker, because - on
purpose - it obvously doesn't show the uninteresting commits!

This adds a "--show-all" flag to the revision walker, which will make
it show uninteresting commits too, and they'll have a '^' in front of
them (it also fixes a logic error for !verbose_header for boundary
commits - we should show the '-' even if left_right isn't shown).

A separate patch to gitk to teach it the new '^' was sent
to paulus.  With the change in place, it actually is interesting
even for the cases that git doesn't have any problems with, ie
for the kernel you can do:

	gitk -d --show-all v2.6.24..

and you see just how far down it has to parse things to see it all. The
use of "-d" is a good idea, since the date-ordered toposort is much better
at showing why it goes deep down (ie the date of some of those commits
after 2.6.24 is much older, because they were merged from trees that
weren't rebased).

So I think this is a useful feature even for non-debugging - just to
visualize what git does internally more.

When it actually breaks out due to the "everybody_uninteresting()"
case, it adds the uninteresting commits (both the one it's looking at
now, and the list of pending ones) to the list

This way, we really list *all* the commits we've looked at.

Because we now end up listing commits we may not even have been parsed
at all "show_log" and "show_commit" need to protect against commits
that don't have a commit buffer entry.

That second part is debatable just how it should work. Maybe we shouldn't
show such entries at all (with this patch those entries do get shown, they
just don't get any message shown with them). But I think this is a useful
case.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-13 15:59:26 -08:00
Junio C Hamano c0cb4a0679 diff --relative: help working in a bare repository
This allows the --relative option to say which subdirectory to
pretend to be in, so that in a bare repository, you can say:

    $ git log --relative=drivers/ v2.6.20..v2.6.22 -- drivers/scsi/

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-13 14:59:34 -08:00
Junio C Hamano cd676a5136 diff --relative: output paths as relative to the current subdirectory
This adds --relative option to the diff family.  When you start
from a subdirectory:

        $ git diff --relative

shows only the diff that is inside your current subdirectory,
and without $prefix part.  People who usually live in
subdirectories may like it.

There are a few things I should also mention about the change:

 - This works not just with diff but also works with the log
   family of commands, but the history pruning is not affected.

   In other words, if you go to a subdirectory, you can say:

        $ git log --relative -p

   but it will show the log message even for commits that do not
   touch the current directory.  You can limit it by giving
   pathspec yourself:

        $ git log --relative -p .

   This originally was not a conscious design choice, but we
   have a way to affect diff pathspec and pruning pathspec
   independently.  IOW "git log --full-diff -p ." tells it to
   prune history to commits that affect the current subdirectory
   but show the changes with full context.  I think it makes
   more sense to leave pruning independent from --relative than
   the obvious alternative of always pruning with the current
   subdirectory, which would break the symmetry.

 - Because this works also with the log family, you could
   format-patch a single change, limiting the effect to your
   subdirectory, like so:

        $ cd gitk-git
        $ git format-patch -1 --relative 911f1eb

   But because that is a special purpose usage, this option will
   never become the default, with or without repository or user
   preference configuration.  The risk of producing a partial
   patch and sending it out by mistake is too great if we did
   so.

 - This is inherently incompatible with --no-index, which is a
   bolted-on hack that does not have much to do with git
   itself.  I didn't bother checking and erroring out on the
   combined use of the options, but probably I should.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-13 14:58:07 -08:00
Arjen Laarhoven 0faf2da7e5 Fix "git log --diff-filter" bug
In commit b7bb760d5e (Fix revision
log diff setup, avoid unnecessary diff generation) an optimization was
made to avoid unnecessary diff generation.  This was partly fixed in
99516e35d0 (Fix embarrassing "git log
--follow" bug).  The '--diff-filter' option also needs the diff machinery
in action.

Signed-off-by: Arjen Laarhoven <arjen@yaph.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-26 11:57:36 -08:00
Junio C Hamano 3384a2dfc1 shortlog: default to HEAD when the standard input is a tty
Instead of warning the user that it is expecting git log output from
the standard input (and waiting for the user to type the log from
the keyboard, which is a silly thing to do), default to traverse from
HEAD when there is no rev parameter given and the standard input is
a tty.

This factors out a useful helper "add_head()" from builtin-diff.c to a
more appropriate place revision.c while renaming it to more descriptive
name add_head_to_pending(), as that is what the function is about.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-11 17:01:31 -08:00
Junio C Hamano 5d3d1cacc1 Merge branch 'lt/rev-list-gitlink'
* lt/rev-list-gitlink:
  Fix rev-list when showing objects involving submodules
2007-11-18 16:16:37 -08:00
Junio C Hamano 761e8566cb Merge branch 'lt/rev-list-interactive'
* lt/rev-list-interactive:
  Fix parent rewriting in --early-output
  revision walker: mini clean-up
  Enhance --early-output format
  Add "--early-output" log flag for interactive GUI use
  Simplify topo-sort logic
2007-11-18 16:03:24 -08:00
Linus Torvalds 7dc0fe3be5 Fix parent rewriting in --early-output
We cannot tell a node that has been checked and found not to be
interesting (which does not have the TREECHANGE flag) from a
node that hasn't been checked if it is interesting or not,
without relying on something else, such as object->parsed.

But an object can get the "parsed" flag for other reasons.
Which means that "TREECHANGE" has the wrong polarity.

This changes the way how the path pruning logic marks an
uninteresting commits.  From now on, we consider a commit
interesting by default, and explicitly mark the ones we decided
to prune.  The flag is renamed to "TREESAME".

Then, this fixes the logic to show the early output with
incomplete pruning.  It basically says "a commit that has
TREESAME set is kind-of-UNINTERESTING", but obviously in a
different way than an outright UNINTERESTING commit.  Until we
parse and examine enough parents to determine if a commit
becomes surely "kind-of-UNINTERESTING", we avoid rewriting
the ancestry so that later rounds can fix things up.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-11-14 03:59:37 -08:00
Linus Torvalds 4d1012c370 Fix rev-list when showing objects involving submodules
The function mark_tree_uninteresting() assumed that the tree entries
are blob when they are not trees.  This is not so.  Since we do
not traverse into submodules (yet), the gitlinks should be ignored.

In general, we should try to start moving away from using the
"S_ISLNK()" like things for internal git state. It was a mistake to
just assume the numbers all were same across all systems in the first
place.  This implementation converts to the "object_type", and then
uses a case statement.

Noticed by Ilari on IRC.
Test script taken from an earlier version by Dscho.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-11-14 03:44:22 -08:00
Pierre Habouzit 8f67f8aefb Make the diff_options bitfields be an unsigned with explicit masks.
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>
2007-11-11 16:54:15 -08:00
Linus Torvalds 53b2c823f6 revision walker: mini clean-up
This removes the unnecessary indirection of "revs->prune_fn",
since that function is always the same one (or NULL), and there
is in fact not even an abstraction reason to make it a function
(i.e. its not called from some other file and doesn't allow us
to keep the function itself static or anything like that).

It then just replaces it with a bit that says "prune or not",
and if not pruning, every commit gets TREECHANGE.

That in turn means that

 - if (!revs->prune_fn || (flags & TREECHANGE))
 - if (revs->prune_fn && !(flags & TREECHANGE))

just become

 - if (flags & TREECHANGE)
 - if (!(flags & TREECHANGE))

respectively.

Together with adding the "single_parent()" helper function, the "complex"
conditional now becomes

	if (!(flags & TREECHANGE) && rev->dense && single_parent(commit))
		continue;

Also indirection of "revs->dense" checking is thrown away the
same way, because TREECHANGE bit is set appropriately now.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-11-05 18:19:28 -08:00
Linus Torvalds 252a7c0235 Enhance --early-output format
This makes --early-output a bit more advanced, and actually makes it
generate multiple "Final output:" headers as it updates things
asynchronously. I realize that the "Final output:" line is now illogical,
since it's not really final until it also says "done", but

It now _always_ generates a "Final output:" header in front of any commit
list, and that output header gives you a *guess* at the maximum number of
commits available. However, it should be noted that the guess can be
completely off: I do a reasonable job estimating it, but it is not meant
to be exact.

So what happens is that you may get output like this:

 - at 0.1 seconds:

	Final output: 2 incomplete
	.. 2 commits listed ..

 - half a second later:

	Final output: 33 incomplete
	.. 33 commits listed ..

 - another half a second after that:

	Final output: 71 incomplete
	.. 71 commits listed ..

 - another half second later:

	Final output: 136 incomplete
	.. 100 commits listed: we hit the --early-output limit, and
	.. will only output 100 commits, and after this you'll not
	.. see an "incomplete" report any more since you got as much
	.. early output as you asked for!

 - .. and then finally:

	Final output: 73106 done
	.. all the commits ..

The above is a real-life scenario on my current kernel tree after having
flushed all the caches.

Tested with the experimental gitk patch that Paul sent out, and by looking
at the actual log output (and verifying that my commit count guesses
actually match real life fairly well).

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-11-05 14:28:53 -08:00
Linus Torvalds cdcefbc971 Add "--early-output" log flag for interactive GUI use
This adds support for "--early-output[=n]" as a flag to the "git log"
family of commands.  This allows GUI programs to state that they want to
get some output early, in order to be able to show at least something
quickly, even if the full output may take longer to generate.

If no count is specified, a default count of a hundred commits will be
used, although the actual numbr of commits output may be smaller
depending on how many commits were actually found in the first tenth of
a second (or if *everything* was found before that, in which case no
early output will be provided, and only the final list is made
available).

When the full list is generated, there will be a "Final output:" string
prepended to it, regardless of whether any early commits were shown or
not, so that the consumer can always know the difference between early
output and the final list.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-11-04 01:54:20 -07:00
Linus Torvalds 23c17d4a4a Simplify topo-sort logic
.. by not using quite so much indirection.

This currently grows the "struct commit" a bit, which could be avoided by
using a union for "util" and "indegree" (the topo-sort used to use "util"
anyway, so you cannot use them together), but for now the goal of this was
to simplify, not optimize.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-11-04 01:54:20 -07:00
Shawn O. Pearce d55e7c3acf Merge branch 'maint'
* maint:
  Whip post 1.5.3.4 maintenance series into shape.
  rebase -i: use diff plumbing instead of porcelain
  Do not remove distributed configure script
  git-archive: document --exec
  git-reflog: document --verbose
  git-config: handle --file option with relative pathname properly
  clear_commit_marks(): avoid deep recursion
  git add -i: Remove unused variables
  git add -i: Fix parsing of abbreviated hunk headers
  git-config: don't silently ignore options after --list
  Clean up "git log" format with DIFF_FORMAT_NO_OUTPUT
  Fix embarrassing "git log --follow" bug

Conflicts:

	RelNotes
	git-rebase--interactive.sh
2007-10-15 22:31:47 -04:00
Linus Torvalds 99516e35d0 Fix embarrassing "git log --follow" bug
It turns out that I completely broke "git log --follow" with my recent
patch to revision.c ("Fix revision log diff setup, avoid unnecessary diff
generation", commit b7bb760d5e).

Why? Because --follow obviously requires the diff machinery to function,
exactly the same way pickaxe does.

So everybody is away right now, but considering that nobody even noticed
this bug, I don't think it matters. But for the record, here's the trivial
one-liner fix (well, two, since I also fixed the comment).

Because of the nature of the bug, if you ask for patches when following
(which is one of the things I normally do), the bug is hidden, because
then the request for diff output will automatically also enable the diffs
themselves.

So while "git log --follow <filename>" didn't work, adding a "-p"
magically made it work again even without this fix.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2007-10-15 20:15:58 -04:00
Andy Parkins 856665f827 parse_date_format(): convert a format name to an enum date_mode
Factor out the code to parse --date=<format> parameter to revision
walkers into a separate function, parse_date_format().  This function
is passed a string and converts it to an enum date_format:

 - "relative"         => DATE_RELATIVE
 - "iso8601" or "iso" => DATE_ISO8601
 - "rfc2822"          => DATE_RFC2822
 - "short"            => DATE_SHORT
 - "local"            => DATE_LOCAL
 - "default"          => DATE_NORMAL

In the event that none of these strings is found, the function die()s.

Signed-off-by: Andy Parkins <andyparkins@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-09-29 20:31:59 -07:00
Linus Torvalds b7bb760d5e Fix revision log diff setup, avoid unnecessary diff generation
We used to incorrectly start calculating diffs whenever any argument but
'-z' was recognized by the diff options parsing. That was bogus, since not
all arguments result in diffs being needed, so we just waste a lot of time
and effort on calculating diffs that don't matter.

This actually also fixes another bug in "git log". Try this:

	git log -C

and notice how it prints an extra empty line in between log entries, even
though it never prints the actual diff (because we didn't ask for any diff
format, so the diff machinery never prints anything).

With this patch, that bogus empty line is gone, because "revs->diff" is
never set.  So this isn't just a "wasted time and effort" issue, it's also
a slight semantic fix.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-09-29 15:42:32 -07:00
Johannes Schindelin 023756f4eb revision walker: --cherry-pick is a limited operation
We used to rely on the fact that cherry-pick would trigger the code path
to set limited = 1 in handle_commit(), when an uninteresting commit was
encountered.

However, when cherry picking between two independent branches, i.e. when
there are no merge bases, and there is only linear development (which can
happen when you cvsimport a fork of a project), no uninteresting commit
will be encountered.

So set limited = 1 when --cherry-pick was asked for.

Noticed by Martin Bähr.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-09-15 16:34:11 -07:00
Junio C Hamano a65f2005a6 Make "git-log --" without paths behave the same as "git-log" without --
"git log" family of commands, even when run from a subdirectory,
do not limit the revision range with the current directory as
the path limiter, but with double-dash without any paths after
it, i.e. "git log --" do so.  It was a mistake to have a
difference between "git log --" and "git log" introduced in
commit ae563542bf (First cut at
libifying revlist generation).

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-08-31 00:26:41 -07:00
Shawn O. Pearce d56651c0ef Don't allow combination of -g and --reverse as it doesn't work
The --walk-reflogs logic and the --reverse logic are completely
incompatible with one another.  Attempting to use both at the same
time leads to confusing results that sometimes violates the user's
formatting options or ignores the user's request to see the reflog
message and timestamp.

Unfortunately the implementation of both of these features is glued
onto the side of the revision walking machinary in such a way that
they are probably not going to be easy to make them compatible with
each other.  Rather than offering the user confusing results we are
better off bailing out with an error message until such a time as
the implementations can be refactored to be compatible.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-08-19 22:52:06 -07:00
Marco Costalba 9fa3465d6b Add --log-size to git log to print message size
With this option git-log prints log message size
just before the corresponding message.

Porcelain tools could use this to speedup parsing
of git-log output.

Note that size refers to log message only. If also
patch content is shown its size is not included.

In case it is not possible to know the size upfront
size value is set to zero.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-08-14 01:59:33 -07:00
Johannes Schindelin 7b69b873fa git log -g: Complain, but do not fail, when no reflogs are there
When asking "git log -g --all", clearly you want to see only those refs
that do have reflogs, but you do not want it to fail, either.

So instead of die()ing, complain about it, but move on to the other refs.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-07-24 17:28:10 -07:00
Johannes Schindelin 8e64006eee Teach revision machinery about --no-walk
The flag "no_walk" is present in struct rev_info since a long time, but
so far has been in use exclusively by "git show".

With this flag, you can see all your refs, ordered by date of the last
commit:

$ git log --abbrev-commit --pretty=oneline --decorate --all --no-walk

which is extremely helpful if you have to juggle with a lot topic
branches, and do not remember in which one you introduced that uber
debug option, or simply want to get an overview what is cooking.

(Note that the "git log" invocation above does not output the same as

 $ git show --abbrev-commit --pretty=oneline --decorate --all --quiet

 since "git show" keeps the alphabetic order that "--all" returns the
 refs in, even if the option "--date-order" was passed.)

For good measure, this also adds the "--do-walk" option which overrides
"--no-walk".

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-07-23 23:57:50 -07:00
Junio C Hamano e5633cbb85 Synonyms: -i == --regexp-ignore-case, -E == --extended-regexp
These options to log family were too long to type.  Give them
shorter synonyms.

Fix the parsing of the long options while at it.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-07-22 01:38:26 -07:00
Linus Torvalds e1abc69b72 Fix up duplicate parents removal
This removes duplicate parents properly, making gitk happy again.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-07-20 23:36:39 -07:00
Junio C Hamano b727a235a7 Wire new date formats to --date=<format> parser.
Now we can use all internally supported date formats with

	git log --date=<format>

syntax.  Earlier, we only allowed relative/local/default.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-07-13 23:22:52 -07:00
Johannes Schindelin 36d56de649 Fix --cherry-pick with given paths
If you say --cherry-pick, you do not want to see patches which are
in the upstream.  If you specify paths with that, what you usually
expect is that only those parts of the patches are looked at which
actually touch the given paths.

With this patch, that expectation is met.

Noticed by Sam Vilain.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-07-11 14:59:31 -07:00
Junio C Hamano 11d6596709 revision.c: remove duplicated parents after history simplification
When we simplify history due to path limits, the parents list
for a rewritten commit can end up having duplicates.  Instead of
filtering them out in the output codepath like earlier commit
88494423 did, remove them much earlier, when the parent
information actually gets rewritten.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-07-08 23:18:08 -07:00
Adam Roben dbd2144736 format-patch: Add format.subjectprefix config option
This change lets you use the format.subjectprefix config option to override the
default subject prefix.

Signed-off-by: Adam Roben <aroben@apple.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-07-02 21:05:45 -07:00
Linus Torvalds 750f7b668f Finally implement "git log --follow"
Ok, I've really held off doing this too damn long, because I'm lazy, and I
was always hoping that somebody else would do it.

But no, people keep asking for it, but nobody actually did anything, so I
decided I might as well bite the bullet, and instead of telling people
they could add a "--follow" flag to "git log" to do what they want to do,
I decided that it looks like I just have to do it for them..

The code wasn't actually that complicated, in that the diffstat for this
patch literally says "70 insertions(+), 1 deletions(-)", but I will have
to admit that in order to get to this fairly simple patch, you did have to
know and understand the internal git diff generation machinery pretty
well, and had to really be able to follow how commit generation interacts
with generating patches and generating the log.

So I suspect that while I was right that it wasn't that hard, I might have
been expecting too much of random people - this patch does seem to be
firmly in the core "Linus or Junio" territory.

To make a long story short: I'm sorry for it taking so long until I just
did it.

I'm not going to guarantee that this works for everybody, but you really
can just look at the patch, and after the appropriate appreciative noises
("Ooh, aah") over how clever I am, you can then just notice that the code
itself isn't really that complicated.

All the real new code is in the new "try_to_follow_renames()" function. It
really isn't rocket science: we notice that the pathname we were looking
at went away, so we start a full tree diff and try to see if we can
instead make that pathname be a rename or a copy from some other previous
pathname. And if we can, we just continue, except we show *that*
particular diff, and ever after we use the _previous_ pathname.

One thing to look out for: the "rename detection" is considered to be a
singular event in the _linear_ "git log" output! That's what people want
to do, but I just wanted to point out that this patch is *not* carrying
around a "commit,pathname" kind of pair and it's *not* going to be able to
notice the file coming from multiple *different* files in earlier history.

IOW, if you use "git log --follow", then you get the stupid CVS/SVN kind
of "files have single identities" kind of semantics, and git log will just
pick the identity based on the normal move/copy heuristics _as_if_ the
history could be linearized.

Put another way: I think the model is broken, but given the broken model,
I think this patch does just about as well as you can do. If you have
merges with the same "file" having different filenames over the two
branches, git will just end up picking _one_ of the pathnames at the point
where the newer one goes away. It never looks at multiple pathnames in
parallel.

And if you understood all that, you probably didn't need it explained, and
if you didn't understand the above blathering, it doesn't really mtter to
you. What matters to you is that you can now do

	git log -p --follow builtin-rev-list.c

and it will find the point where the old "rev-list.c" got renamed to
"builtin-rev-list.c" and show it as such.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-06-22 23:37:11 -07:00
Junio C Hamano 5bd148bfe8 Merge branch 'maint' to sync with GIT 1.5.2.2 2007-06-16 01:22:10 -07:00
Junio C Hamano 66e41f7b99 Avoid diff cost on "git log -z"
Johannes and Marco discovered that "git log -z" spent cycles in diff even
though there is no need to actually compute diffs.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-06-15 23:48:35 -07:00
Junio C Hamano 2d93b9face More missing static
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-06-08 02:37:19 -07:00
Petr Baudis 93d496a560 git-rev-list: Add regexp tuning options
This patch introduces --extended-regexp and --regexp-ignore-case options to
tune what kind of patterns the pattern-limiting options (--grep, --author,
...) accept.

Signed-off-by: Petr Baudis <pasky@suse.cz>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-05-20 20:31:50 -07:00
Alex Riesen cc0e6c5adc Handle return code of parse_commit in revision machinery
This fixes a crash in broken repositories where random commits
suddenly disappear.

Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-05-06 00:07:07 -07:00
Junio C Hamano a7b02ccf9a Add --date={local,relative,default}
This adds --date={local,relative,default} option to log family of commands,
to allow displaying timestamps in user's local timezone, relative time, or
the default format.

Existing --relative-date option is a synonym of --date=relative; we could
probably deprecate it in the long run.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-04-25 21:39:43 -07:00
Martin Koegler bb6c2fba41 store mode in rev_list, if <tree>:<filename> syntax is used
Signed-off-by: Martin Koegler <mkoegler@auto.tuwien.ac.at>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-04-24 00:08:49 -07:00
Junio C Hamano d016a896d4 Merge branch 'jc/cherry'
* jc/cherry:
  Documentation: --cherry-pick
  git-log --cherry-pick A...B
  Refactor patch-id filtering out of git-cherry and git-format-patch.
  Add %m to '--pretty=format:'
2007-04-12 21:04:27 -07:00
Junio C Hamano 2bfe3cec92 Fix git {log,show,...} --pretty=email
An earlier --subject-prefix patch forgot that format-patch is
not the only codepath that adds the "[PATCH]" prefix, and broke
everybody else in the log family.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-04-12 17:43:28 -07:00
Junio C Hamano d7a17cad97 git-log --cherry-pick A...B
This is meant to be a saner replacement for "git-cherry".

When used with "A...B", this filters out commits whose patch
text has the same patch-id as a commit on the other side.  It
would probably most useful to use with --left-right.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-04-11 20:02:03 -07:00
Theodore Ts'o 46efd2d93c Rename warn() to warning() to fix symbol conflicts on BSD and Mac OS
This fixes a problem reported by Randal Schwartz:

>I finally tracked down all the (albeit inconsequential) errors I was getting
>on both OpenBSD and OSX.  It's the warn() function in usage.c.  There's
>warn(3) in BSD-style distros.  It'd take a "great rename" to change it, but if
>someone with better C skills than I have could do that, my linker and I would
>appreciate it.

It was annoying to me, too, when I was doing some mergetool testing on
Mac OS X, so here's a fix.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: "Randal L. Schwartz" <merlyn@stonehenge.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-03-31 01:11:11 -07:00
Junio C Hamano 3a81b9f571 Merge branch 'jc/fpl'
* jc/fpl:
  git-log --first-parent: show only the first parent log
2007-03-25 17:47:07 -07:00
Linus Torvalds 6fda5e5180 Initialize tree descriptors with a helper function rather than by hand.
This removes slightly more lines than it adds, but the real reason for
doing this is that future optimizations will require more setup of the
tree descriptor, and so we want to do it in one place.

Also renamed the "desc.buf" field to "desc.buffer" just to trigger
compiler errors for old-style manual initializations, making sure I
didn't miss anything.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-03-21 10:21:57 -07:00
James Bowes 567fb65e25 Replace remaining instances of strdup with xstrdup.
Signed-off-by: James Bowes <jbowes@dangerouslyinc.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-03-19 18:16:03 -07:00
Junio C Hamano 0053e902b4 git-log --first-parent: show only the first parent log
If your development history does not have fast-forward merges,
i.e. the "first parent" of commits in your history are special
than other parents, this option gives a better overview of the
evolution of a particular branch.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-03-14 16:22:18 -07:00
Junio C Hamano dd47aa3133 try-to-simplify-commit: use diff-tree --quiet machinery.
This uses diff-tree --quiet machinery to terminate the internal
diff-tree between a commit and its parents via revs.pruning (not
revs.diffopt) as soon as we find enough about the tree change.

With respect to the optionally given pathspec, we are interested
if the tree of commit is identical to the parent's, only adds
new paths to the parent's, or there are other differences.  As
soon as we find out that there is one such other kind of
difference, we do not have to compare the rest of the tree.

Because we do not call standard diff_addremove/diff_change, we
instruct the diff-tree machinery to stop early by setting
has_changes when we say we found the trees to be different.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-03-14 16:21:19 -07:00
Junio C Hamano 0a4ba7f8c6 revision.c: explain what tree_difference does
This explains how tree_difference variable is used, and updates two
places where the code knows symbolic constant REV_TREE_SAME is 0.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-03-14 16:21:19 -07:00
Junio C Hamano 8839ac9442 revision --boundary: fix uncounted case.
When the list is truly limited and get_revision_1() returned NULL,
the code incorrectly returned it without switching to boundary emiting
mode.  Silly.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-03-06 03:20:55 -08:00
Junio C Hamano 892ae6bf13 revision --boundary: fix stupid typo
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-03-06 03:00:18 -08:00
Junio C Hamano c33d859385 revision traversal: SHOWN means shown
This moves the code to set SHOWN on the commit from get_revision_1()
back to get_revision(), so that the bit means what it originally
meant: this commit has been given back to the caller.

Also it fixes the --reverse breakage Dscho pointed out.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-03-06 01:08:34 -08:00
Junio C Hamano 2b064697a5 revision traversal: retire BOUNDARY_SHOW
This removes the flag internally used by revision traversal to
decide which commits are indeed boundaries and renames it to
CHILD_SHOWN.  builtin-bundle uses the symbol for its
verification, but I think the logic it uses it is wrong.  The
flag is still useful but it is local to the git-bundle, so it is
renamed to PREREQ_MARK.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-03-06 01:08:34 -08:00
Junio C Hamano 86ab4906a7 revision walker: Fix --boundary when limited
This cleans up the boundary processing in the commit walker.  It

 - rips out the boundary logic from the commit walker. Placing
   "negative" commits in the revs->commits list was Ok if all we
   cared about "boundary" was the UNINTERESTING limiting case,
   but conceptually it was wrong.

 - makes get_revision_1() function to walk the commits and return
   the results as if there is no funny postprocessing flags such
   as --reverse, --skip nor --max-count.

 - makes get_revision() function the postprocessing phase:

   If reverse is given, wait for get_revision_1() to give
   everything that it would normally give, and then reverse it
   before consuming.

   If skip is given, skip that many before going further.

   If max is given, stop when we gave out that many.

   Now that we are about to return one positive commit, mark
   the parents of that commit to be potential boundaries
   before returning, iff we are doing the boundary processing.

   Return the commit.

 - After get_revision() finishes giving out all the positive
   commits, if we are doing the boundary processing, we look at
   the parents that we marked as potential boundaries earlier,
   see if they are really boundaries, and give them out.

It loses more code than it adds, even when the new gc_boundary()
function, which is purely for early optimization, is counted.

Note that this patch is purely for eyeballing and discussion
only.  It breaks git-bundle's verify logic because the logic
does not use BOUNDARY_SHOW flag for its internal computation
anymore.  After we correct it not to attempt to affect the
boundary processing by setting the BOUNDARY_SHOW flag, we can
remove BOUNDARY_SHOW from revision.h and use that bit assignment
for the new CHILD_SHOWN flag.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-03-06 01:08:34 -08:00
Junio C Hamano 77b50ab009 Merge branch 'js/bundle'
* js/bundle:
  bundle: reword missing prerequisite error message
  git-bundle: record commit summary in the prerequisite data
  git-bundle: fix 'create --all'
  git-bundle: avoid fork() in verify_bundle()
  git-bundle: assorted fixes
  Add git-bundle: move objects and references by archive
2007-02-28 14:38:36 -08:00
Junio C Hamano c4f8f82755 Merge branch 'maint'
* maint:
  builtin-fmt-merge-msg: fix bugs in --file option
  index-pack: Loop over pread until data loading is complete.
  blameview: Fix the browse behavior in blameview
  Fix minor typos/grammar in user-manual.txt
  Correct ordering in git-cvsimport's option documentation
  git-show: Reject native ref
  Fix git-show man page formatting in the EXAMPLES section
2007-02-27 22:15:42 -08:00
Linus Torvalds aa27e46111 git-show: Reject native ref
So when we do

	git show v1.4.4..v1.5.0

that's an illogical thing to do, since "git show" is defined to be a
non-revision-walking action, which means the range operator be pointless
and wrong. The fact that we happily accept it (and then _only_ show
v1.5.0, which is the positive end of the range) is quite arguably not very
logical.

We should complain, and say that you can only do "no_walk" with positive
refs. Negative object refs really don't make any sense unless you walk
the obejct list (or you're "git diff" and know about ranges explicitly).

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-02-27 17:09:55 -08:00
Junio C Hamano 503ca3a9f2 Merge branch 'js/no-limit-boundary'
* js/no-limit-boundary:
  rev-list --max-age, --max-count: support --boundary
2007-02-24 01:47:56 -08:00
Johannes Schindelin 3d1efd8f1d git-bundle: fix 'create --all' 2007-02-22 22:30:33 -08:00
Junio C Hamano 1968d77dd6 prefixcmp(): fix-up leftover strncmp().
There were instances of strncmp() that were formatted improperly
(e.g. whitespace around parameter before closing parenthesis)
that caused the earlier mechanical conversion step to miss
them.  This step cleans them up.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-02-20 22:03:15 -08:00
Junio C Hamano cc44c7655f Mechanical conversion to use prefixcmp()
This mechanically converts strncmp() to use prefixcmp(), but only when
the parameters match specific patterns, so that they can be verified
easily.  Leftover from this will be fixed in a separate step, including
idiotic conversions like

    if (!strncmp("foo", arg, 3))

  =>

    if (!(-prefixcmp(arg, "foo")))

This was done by using this script in px.perl

   #!/usr/bin/perl -i.bak -p
   if (/strncmp\(([^,]+), "([^\\"]*)", (\d+)\)/ && (length($2) == $3)) {
           s|strncmp\(([^,]+), "([^\\"]*)", (\d+)\)|prefixcmp($1, "$2")|;
   }
   if (/strncmp\("([^\\"]*)", ([^,]+), (\d+)\)/ && (length($1) == $3)) {
           s|strncmp\("([^\\"]*)", ([^,]+), (\d+)\)|(-prefixcmp($2, "$1"))|;
   }

and running:

   $ git grep -l strncmp -- '*.c' | xargs perl px.perl

Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-02-20 22:03:15 -08:00
Johannes Schindelin c4025103fa rev-list --max-age, --max-count: support --boundary
Now, when saying --max-age=<timestamp>, or --max-count=<n>, together
with --boundary, rev-list prints the boundary commits, i.e. the
commits which are _just_ not shown without --boundary, i.e. their
children are, but they aren't.

Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-02-19 19:07:01 -08:00
Junio C Hamano c230390b47 Merge branch 'js/reverse'
* js/reverse:
  Teach revision machinery about --reverse
2007-02-13 19:20:06 -08:00
Junio C Hamano 25b51e2c7f Do not forget to pack objects reachable from HEAD reflog.
Similar to commit eb8381c8, we need to use for_each_reflog() to make
sure we do not miss objects reachable from HEAD reflog.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-02-12 23:06:54 -08:00
Johannes Schindelin 084ae0a7bd reflog inspection: introduce shortcut "-g"
A short-hand "-g" for "git log --walk-reflogs" and "git
show-branch --reflog" makes it easier to access the reflog
info.

[jc: added -g to show-branch for symmetry]

Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-24 15:13:47 -08:00
Johannes Schindelin 9c5e66e97d Teach revision machinery about --reverse
The option --reverse reverses the order of the commits.

[jc: with comments on rev_info.reverse from Simon 'corecode' Schubert.]

Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-20 23:46:53 -08:00
Johannes Schindelin 8860fd42fc Teach the revision walker to walk by reflogs with --walk-reflogs
When called with "--walk-reflogs", as long as there are reflogs
available, the walker will take this information into account, rather
than the parent information in the commit object.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-20 21:32:31 -08:00
Junio C Hamano 94d23673e3 plug a few leaks in revision walking used in describe.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-11 18:05:53 -08:00
Johannes Schindelin 883d60fa97 Sanitize for_each_reflog_ent()
It used to ignore the return value of the helper function; now, it
expects it to return 0, and stops iteration upon non-zero return
values; this value is then passed on as the return value of
for_each_reflog_ent().

Further, it makes no sense to force the parsing upon the helper
functions; for_each_reflog_ent() now calls the helper function with
old and new sha1, the email, the timestamp & timezone, and the message.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-09 03:04:04 -08:00
Junio C Hamano 7cbcf4d557 Move commit reencoding parameter parsing to revision.c
This way, git-rev-list and git-diff-tree with --pretty can use
it.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-30 15:58:32 -08:00
Junio C Hamano e8b4029f99 Merge branch 'jc/fsck-reflog'
* jc/fsck-reflog:
  Add git-reflog to .gitignore
  reflog expire: do not punt on tags that point at non commits.
  reflog expire: prune commits that are not incomplete
  Don't crash during repack of a reflog with pruned commits.
  git reflog expire
  Move in_merge_bases() to commit.c
  reflog: fix warning message.
  Teach git-repack to preserve objects referred to by reflog entries.
  Protect commits recorded in reflog from pruning.
  add for_each_reflog_ent() iterator
2006-12-26 23:47:40 -08:00
Junio C Hamano d4ada4876d Merge branch 'jc/skip-count'
* jc/skip-count:
  revision: --skip=<n>
2006-12-25 03:27:41 -08:00
Shawn O. Pearce 71b03b42c6 Don't crash during repack of a reflog with pruned commits.
If the user has been using reflog for a long time (e.g. since its
introduction) then it is very likely that an existing branch's
reflog may still mention commits which have long since been pruned
out of the repository.

Rather than aborting with a very useless error message during
git-repack, pack as many valid commits as we can get from the
reflog and let the user know that the branch's reflog contains
already pruned commits.  A future 'git reflog expire' (or whatever
it finally winds up being called) can then be performed to expunge
those reflog entries.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-21 23:01:57 -08:00
Junio C Hamano 63049292e0 Teach git-repack to preserve objects referred to by reflog entries.
This adds a new option --reflog to pack-objects and revision
machinery; do not bother documenting it for now, since this is
only useful for local repacking.

When the option is passed, objects reachable from reflog entries
are marked as interesting while computing the set of objects to
pack.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-20 17:22:10 -08:00
Junio C Hamano 63c4b4c5c1 Merge branch 'jc/leftright'
* jc/leftright:
  Revert "Make left-right automatic."
  Make left-right automatic.
  Teach all of log family --left-right output.
  rev-list --left-right
2006-12-20 14:20:17 -08:00
Junio C Hamano d5db6c9ee7 revision: --skip=<n>
This adds --skip=<n> option to revision traversal machinery.
Documentation and test were added by Robert Fitzsimons.

Signed-off-by: Robert Fitzsimons <robfitz@273k.net>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-20 11:26:11 -08:00
Junio C Hamano 85023577a8 simplify inclusion of system header files.
This is a mechanical clean-up of the way *.c files include
system header files.

 (1) sources under compat/, platform sha-1 implementations, and
     xdelta code are exempt from the following rules;

 (2) the first #include must be "git-compat-util.h" or one of
     our own header file that includes it first (e.g. config.h,
     builtin.h, pkt-line.h);

 (3) system headers that are included in "git-compat-util.h"
     need not be included in individual C source files.

 (4) "git-compat-util.h" does not have to include subsystem
     specific header files (e.g. expat.h).

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-20 09:51:35 -08:00
Junio C Hamano 8dce823562 Revert "Make left-right automatic."
This reverts commit 5761231975.

Feeding symmetric difference to gitk is so useful, and it is the
same for other graphical Porcelains.  Rather than forcing them
to pass --no-left-right, making it optional.

Noticed and reported by Jeff King.
2006-12-19 02:28:16 -08:00
Junio C Hamano 5761231975 Make left-right automatic.
When using symmetric differences, I think the user almost always
would want to know which side of the symmetry each commit came
from.  So this removes --left-right option from the command
line, and turns it on automatically when a symmetric difference
is used ("git log --merge" counts as a symmetric difference
between HEAD and MERGE_HEAD).

Just in case, a new option --no-left-right is provided to defeat
this, but I do not know if it would be useful.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-17 10:35:28 -08:00
Junio C Hamano 74bd902973 Teach all of log family --left-right output.
This makes reviewing

     git log --left-right --merge --no-merges -p

a lot more pleasant.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-17 10:35:28 -08:00
Junio C Hamano 577ed5c20b rev-list --left-right
The output from "symmetric diff", i.e. A...B, does not
distinguish between commits that are reachable from A and the
ones that are reachable from B.  In this picture, such a
symmetric diff includes commits marked with a and b.

         x---b---b  branch B
        / \ /
       /   .
      /   / \
     o---x---a---a  branch A

However, you cannot tell which ones are 'a' and which ones are
'b' from the output.  Sometimes this is frustrating.  This adds
an output option, --left-right, to rev-list.

        rev-list --left-right A...B

would show ones reachable from A prefixed with '<' and the ones
reachable from B prefixed with '>'.

When combined with --boundary, boundary commits (the ones marked
with 'x' in the above picture) are shown with prefix '-', so you
would see list that looks like this:

    git rev-list --left-right --boundary --pretty=oneline A...B

    >bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 3rd on b
    >bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 2nd on b
    <aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 3rd on a
    <aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 2nd on a
    -xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx 1st on b
    -xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx 1st on a

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-17 10:35:28 -08:00
Junio C Hamano 24ad8e0ce2 Merge branch 'jc/pickaxe' 2006-11-07 16:33:59 -08:00
Junio C Hamano 58a1e0e83b Merge branch 'lj/refs'
* lj/refs: (63 commits)
  Fix show-ref usagestring
  t3200: git-branch testsuite update
  sha1_name.c: avoid compilation warnings.
  Make git-branch a builtin
  ref-log: fix D/F conflict coming from deleted refs.
  git-revert with conflicts to behave as git-merge with conflicts
  core.logallrefupdates thinko-fix
  git-pack-refs --all
  core.logallrefupdates create new log file only for branch heads.
  Remove bashism from t3210-pack-refs.sh
  ref-log: allow ref@{count} syntax.
  pack-refs: call fflush before fsync.
  pack-refs: use lockfile as everybody else does.
  git-fetch: do not look into $GIT_DIR/refs to see if a tag exists.
  lock_ref_sha1_basic does not remove empty directories on BSD
  Do not create tag leading directories since git update-ref does it.
  Check that a tag exists using show-ref instead of looking for the ref file.
  Use git-update-ref to delete a tag instead of rm()ing the ref file.
  Fix refs.c;:repack_without_ref() clean-up path
  Clean up "git-branch.sh" and add remove recursive dir test cases.
  ...
2006-11-01 08:48:50 -08:00
Junio C Hamano 62476c8e33 Introduce a new revision set operator <rev>^!
This is a shorthand for "<rev> --not <rev>^@", i.e. "include
this commit but exclude any of its parents".

When a new file $F is introduced by revision $R, this notation
can be used to find a copy-and-paste from existing file in the
parents of that revision without annotating the ancestry of the
lines that were copied from:

	git pickaxe -f -C $R^! -- $F

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-10-31 14:22:34 -08:00
Junio C Hamano 83877f8d92 Merge branch 'maint'
* maint:
  revision traversal: --unpacked does not limit commit list anymore.
  Continue traversal when rev-list --unpacked finds a packed commit.
  Use memmove instead of memcpy for overlapping areas
  quote.c: ensure the same quoting across platforms.
  Surround "#define DEBUG 0" with "#ifndef DEBUG..#endif"
2006-10-30 19:38:50 -08:00
Junio C Hamano 9dad9d2e5b revision traversal: --unpacked does not limit commit list anymore.
This is needed to gain smaller latency back.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-10-30 18:58:03 -08:00
Jan Harkes 744f498522 Continue traversal when rev-list --unpacked finds a packed commit.
When getting the list of all unpacked objects by walking the commit history,
we would stop traversal whenever we hit a packed commit. However the fact
that we found a packed commit does not guarantee that all previous commits
are also packed. As a result the commit walkers did not show all reachable
unpacked objects.

Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-10-30 17:47:36 -08:00
Junio C Hamano 70d0afba91 teach revision walker about --all-match.
This lets you say:

	git log --all-match --author=Linus --committer=Junio --grep=rev-list

to limit commits that was written by Linus, committed by me and
the log message contains word "rev-list".

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-09-27 23:59:10 -07:00
Junio C Hamano 2958d9b5db Merge branch 'master' into lj/refs
* master: (72 commits)
  runstatus: do not recurse into subdirectories if not needed
  grep: fix --fixed-strings combined with expression.
  grep: free expressions and patterns when done.
  Corrected copy-and-paste thinko in ignore executable bit test case.
  An illustration of rev-list --parents --pretty=raw
  Allow git-checkout when on a non-existant branch.
  gitweb: Decode long title for link tooltips
  git-svn: Fix fetch --no-ignore-externals with GIT_SVN_NO_LIB=1
  Ignore executable bit when adding files if filemode=0.
  Remove empty ref directories that prevent creating a ref.
  Use const for interpolate arguments
  git-archive: update documentation
  Deprecate merge-recursive.py
  gitweb: fix over-eager application of esc_html().
  Allow '(no author)' in git-svn's authors file.
  Allow 'svn fetch' on '(no date)' revisions in Subversion.
  git-repack: allow git-repack to run in subdirectory
  Remove upload-tar and make git-tar-tree a thin wrapper to git-archive
  git-tar-tree: Move code for git-archive --format=tar to archive-tar.c
  git-tar-tree: Remove duplicate git_config() call
  ...
2006-09-27 22:23:12 -07:00
Junio C Hamano 8da1977554 Tell between packed, unpacked and symbolic refs.
This adds a "int *flag" parameter to resolve_ref() and makes
for_each_ref() family to call callback function with an extra
"int flag" parameter.  They are used to give two bits of
information (REF_ISSYMREF and REF_ISPACKED) about the ref.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-09-20 22:02:01 -07:00
Junio C Hamano cb5d709ff8 Add callback data to for_each_ref() family.
This is a long overdue fix to the API for for_each_ref() family
of functions.  It allows the callers to specify a callback data
pointer, so that the caller does not have to use static
variables to communicate with the callback funciton.

The updated for_each_ref() family takes a function of type

	int (*fn)(const char *, const unsigned char *, void *)

and a void pointer as parameters, and calls the function with
the name of the ref and its SHA-1 with the caller-supplied void
pointer as parameters.

The commit updates two callers, builtin-name-rev.c and
builtin-pack-refs.c as an example.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-09-20 21:47:42 -07:00
Junio C Hamano 2d10c55537 git log: Unify header_filter and message_filter into one.
Now we can tell the built-in grep to grep only in head or in
body, use that to update --author, --committer, and --grep.

Unfortunately, to make --and, --not and other grep boolean
expressions useful, as in:

	# Things written by Junio committed and by Linus and log
	# does not talk about diff.

	git log --author=Junio --and --committer=Linus \
		--grep-not --grep=diff

we will need to do another round of built-in grep core
enhancement, because grep boolean expressions are designed to
work on one line at a time.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-09-20 13:21:56 -07:00
Linus Torvalds a2ed6ae402 git-log --author and --committer are not left-anchored by default
I know that I'd prefer a rule where

	"--author=^Junio"

would result in the grep-pattern being "^author Junio", but without the
initial '^' it would be "^author .*Junio".

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-09-20 11:14:39 -07:00
Junio C Hamano bd95fcd345 revision traversal: --author, --committer, and --grep.
This adds three options to setup_revisions(), which lets you
filter resulting commits by the author name, the committer name
and the log message with regexp.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-09-20 11:14:39 -07:00
Junio C Hamano 8ecae9b032 revision traversal: prepare for commit log match.
This is from a suggestion by Linus, just to mark the locations where we
need to modify to actually implement the filtering.

We do not have any actual filtering code yet.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-09-20 11:14:39 -07:00
Junio C Hamano 106d710bc1 pack-objects --unpacked=<existing pack> option.
Incremental repack without -a essentially boils down to:

	rev-list --objects --unpacked --all |
        pack-objects $new_pack

which picks up all loose objects that are still live and creates
a new pack.

This implements --unpacked=<existing pack> option to tell the
revision walking machinery to pretend as if objects in such a
pack are unpacked for the purpose of object listing.  With this,
we could say:

	rev-list --objects --unpacked=$active_pack --all |
	pack-objects $new_pack

instead, to mean "all live loose objects but pretend as if
objects that are in this pack are also unpacked".  The newly
created pack would be perfect for updating $active_pack by
replacing it.

Since pack-objects now knows how to do the rev-list's work
itself internally, you can also write the above example by:

	pack-objects --unpacked=$active_pack --all $new_pack </dev/null

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-09-07 02:46:03 -07:00
Junio C Hamano 5d6f0935e6 revision.c: allow injecting revision parameters after setup_revisions().
setup_revisions() wants to get all the parameters at once and
then postprocesses the resulting revs structure after it is done
with them.  This code structure is a bit cumbersome to deal with
efficiently when we want to inject revision parameters from the
side (e.g. read from standard input).

Fortunately, the nature of this postprocessing is not affected by
revision parameters; they are affected only by flags.  So it is
Ok to do add_object() after the it returns.

This splits out the code that deals with the revision parameter
out of the main loop of setup_revisions(), so that we can later
call it from elsewhere after it returns.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-09-05 21:28:36 -07:00
Jonas Fonseca 3dfb9278df Add --relative-date option to the revision interface
Exposes the infrastructure from 9a8e35e987.

Signed-off-by: Jonas Fonseca <fonseca@diku.dk>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-08-28 16:20:33 -07:00
Shawn Pearce e702496e43 Convert memcpy(a,b,20) to hashcpy(a,b).
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>
2006-08-23 13:53:10 -07:00
Junio C Hamano 72ee96c0f1 check return value from diff_setup_done()
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-08-09 12:45:27 -07:00
Linus Torvalds db6296a566 Call setup_git_directory() early
Any git command that expects to work in a subdirectory of a project, and
that reads the git config files (which is just about all of them) needs to
make sure that it does the "setup_git_directory()" call before it tries to
read the config file.

This means, among other things, that we need to move the call out of
"init_revisions()", and into the caller.

This does the mostly trivial conversion to do that.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-07-28 22:03:06 -07:00
Linus Torvalds 1974632c66 Remove TYPE_* constant macros and use object_type enums consistently.
This updates the type-enumeration constants introduced to reduce
the memory footprint of "struct object" to match the type bits
already used in the packfile format, by removing the former
(i.e. TYPE_* constant macros) and using the latter (i.e. enum
object_type) throughout the code for consistency.

Eventually we can stop passing around the "type strings"
entirely, and this will help - no confusion about two different
integer enumeration.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-07-12 23:18:03 -07:00
Junio C Hamano ae3e5e1ef2 git log -p --merge [[--] paths...]
This adds Linus's wish, "--merge" flag, which makes the above
expand to a rough equivalent to:

	git log -p HEAD MERGE_HEAD ^$(git-merge-base HEAD MERGE_HEAD) \
		-- $(git-ls-files -u [paths...] | cut -f2 | uniq)

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-07-07 13:32:31 -07:00
Junio C Hamano bf928e9d2c Merge branch 'js/merge-base' 2006-07-06 19:26:13 -07:00
Junio C Hamano 0c926a3d9c Merge branch 'th/diff'
* th/diff:
  builtin-diff: turn recursive on when defaulting to --patch format.
  t4013: note improvements brought by the new output code.
  t4013: add format-patch tests.
  format-patch: fix diff format option implementation
  combine-diff.c: type sanity.
  t4013 test updates for new output code.
  Fix some more diff options changes.
  Fix diff-tree -s
  log --raw: Don't descend into subdirectories by default
  diff-tree: Use ---\n as a message separator
  Print empty line between raw, stat, summary and patch
  t4013: add more tests around -c and --cc
  whatchanged: Default to DIFF_FORMAT_RAW
  Don't xcalloc() struct diffstat_t
  Add msg_sep to diff_options
  DIFF_FORMAT_RAW is not default anymore
  Set default diff output format after parsing command line
  Make --raw option available for all diff commands
  Merge with_raw, with_stat and summary variables to output_format
  t4013: add tests for diff/log family output options.
2006-07-05 16:31:24 -07:00
Rene Scharfe 4205eca8de rev-list: free commit_list in ... handler
Johannes noticed the missing call to free_commit_list() in the
patch from Santi to add ... support to rev-parse.  Turns out I
forgot it too in rev-list.  This patch is against the next branch
(3b1d06a).

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-07-04 14:32:52 -07:00
Junio C Hamano f23c75a8ec Merge branch 'master' into js/merge-base
This is to pull in the object-hash clean-up from the master branch.
2006-07-03 03:16:52 -07:00
Rene Scharfe c0fa8255c6 Fold get_merge_bases_clean() into get_merge_bases()
Change get_merge_bases() to be able to clean up after itself if
needed by adding a cleanup parameter.

We don't need to save the flags and restore them afterwards anymore;
that was a leftover from before the flags were moved out of the
range used in revision.c.  clear_commit_marks() sets them to zero,
which is enough.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Acked-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-07-02 10:58:25 -07:00
Linus Torvalds 02d3dca3bf revision.c: fix "dense" under --remove-empty
It had the wrong test for whether a commit was a merge. What it did was to
say that a non-merge has exactly one parent (which sounds almost right),
but the fact is, initial trees have no parent at all, but they're
obviously not merges.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-07-02 10:55:59 -07:00
Linus Torvalds 6631c73685 revision.c: --full-history fix.
With history simplification, we still show merges that are required
to make the history _complete_, i.e. say that you had:

	  a
	  |
	  b
	 / \
	c   d
	|   |

and neither "a" nor "b" actually changed the file, but both "c" and "d"
did: in this case we have to leave "b" around just because otherwise there
would be no way to show the _relationship_, even if "b" itself doesn't
actually change the tree in any way what-so-ever.

It would make sense to make that further simplification if the
"--parents" flag wasn't present.  In that case the user is
literally asking for a list of commits and is not interested in
the relationship between them.

This patch also fixes a real bug.  Without this patch, the
"--parents --full-history" combination (which you'd get if you
do something like

	gitk --full-history Makefile

or similar) will actually _drop_ merges where all children are identical.
That's wrong in the --full-history case, because it means that the graph
ends up missing lots of entries.

In the process, this also should make

	git-rev-list --full-history Makefile

give just the _true_ list of all commits that changed Makefile (and
properly ignore merges that were identical in one parent), because now
we're not asking for "--parent", so we don't need the unnecessary merge
commits to keep the history together.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-07-01 18:21:03 -07:00
Rene Scharfe 0d2c9d67d9 Add '...' operator for revisions
'A...B' is a shortcut for 'A B --not $(git-merge-base --all A B)'.
This XOR-like operation is called symmetric difference in set
theory.

The symbol '...' has been chosen because it's rather similar to the
existing '..' operator and the somewhat more natural caret ('^') is
already taken.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-07-01 18:13:47 -07:00
Timo Hirvonen 0e677e1a6b DIFF_FORMAT_RAW is not default anymore
diff_setup() used to initialize output_format to DIFF_FORMAT_RAW.  Now
the default is 0 (no output) so don't compare against DIFF_FORMAT_RAW to
see if any diff format command line flags were given.

Signed-off-by: Timo Hirvonen <tihirvon@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-26 14:58:41 -07:00
Linus Torvalds 1f1e895fcc Add "named object array" concept
We've had this notion of a "object_list" for a long time, which eventually
grew a "name" member because some users (notably git-rev-list) wanted to
name each object as it is generated.

That object_list is great for some things, but it isn't all that wonderful
for others, and the "name" member is generally not used by everybody.

This patch splits the users of the object_list array up into two: the
traditional list users, who want the list-like format, and who don't
actually use or want the name. And another class of users that really used
the list as an extensible array, and generally wanted to name the objects.

The patch is fairly straightforward, but it's also biggish. Most of it
really just cleans things up: switching the revision parsing and listing
over to the array makes things like the builtin-diff usage much simpler
(we now see exactly how many members the array has, and we don't get the
objects reversed from the order they were on the command line).

One of the main reasons for doing this at all is that the malloc overhead
of the simple object list was actually pretty high, and the array is just
a lot denser. So this patch brings down memory usage by git-rev-list by
just under 3% (on top of all the other memory use optimizations) on the
mozilla archive.

It does add more lines than it removes, and more importantly, it adds a
whole new infrastructure for maintaining lists of objects, but on the
other hand, the new dynamic array code is pretty obvious. The change to
builtin-diff-tree.c shows a fairly good example of why an array interface
is sometimes more natural, and just much simpler for everybody.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-19 18:45:48 -07:00
Linus Torvalds cb115748ec Some more memory leak avoidance
This is really the dregs of my effort to not waste memory in git-rev-list,
and makes barely one percent of a difference in the memory footprint, but
hey, it's also a pretty small patch.

It discards the parent lists and the commit buffer after the commit has
been shown by git-rev-list (and "git log" - which already did the commit
buffer part), and frees the commit list entry that was used by the
revision walker.

The big win would be to get rid of the "refs" pointer in the object
structure (another 5%), because it's only used by fsck. That would require
some pretty major surgery to fsck, though, so I'm timid and did the less
interesting but much easier part instead.

This (percentually) makes a bigger difference to "git log" and friends,
since those are walking _just_ commits, and thus the list entries tend to
be a bigger percentage of the memory use. But the "list all objects" case
does improve too.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-17 18:49:52 -07:00
Linus Torvalds 885a86abe2 Shrink "struct object" a bit
This shrinks "struct object" by a small amount, by getting rid of the
"struct type *" pointer and replacing it with a 3-bit bitfield instead.

In addition, we merge the bitfields and the "flags" field, which
incidentally should also remove a useless 4-byte padding from the object
when in 64-bit mode.

Now, our "struct object" is still too damn large, but it's now less
obviously bloated, and of the remaining fields, only the "util" (which is
not used by most things) is clearly something that should be eventually
discarded.

This shrinks the "git-rev-list --all" memory use by about 2.5% on the
kernel archive (and, perhaps more importantly, on the larger mozilla
archive). That may not sound like much, but I suspect it's more on a
64-bit platform.

There are other remaining inefficiencies (the parent lists, for example,
probably have horrible malloc overhead), but this was pretty obvious.

Most of the patch is just changing the comparison of the "type" pointer
from one of the constant string pointers to the appropriate new TYPE_xxx
small integer constant.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-17 18:49:18 -07:00
Linus Torvalds 9202434cbd gitweb.cgi history not shown
This does:

 - add a "rev.simplify_history" flag which defaults to on
 - it turns it off for "git whatchanged" (which thus now has real
   semantics outside of "git log")
 - it adds a command line flag ("--full-history") to turn it off for
   others (ie you can make "git log" and "gitk" etc get the semantics if
   you want to.

Now, just as an example of _why_ you really really really want to simplify
history by default, apply this patch, install it, and try these two
command lines:

	gitk --full-history -- git.c
	gitk -- git.c

and compare the output.

So with this, you can also now do

	git whatchanged -p -- gitweb.cgi
	git log -p --full-history -- gitweb.cgi

and it will show the old history of gitweb.cgi, even though it's not
relevant to the _current_ state of the name "gitweb.cgi"

NOTE NOTE NOTE! It will still actually simplify away merges that didn't
change anything at all into either child. That creates these bogus strange
discontinuities if you look at it with "gitk" (look at the --full-history
gitk output for git.c, and you'll see a few strange cases).

So the whole "--parent" thing ends up somewhat bogus with --full-history
because of this, but I'm not sure it's worth even worrying about. I don't
think you'd ever want to really use "--full-history" with the graphical
representation, I just give it as an example exactly to show _why_ doing
so would be insane.

I think this is trivial enough and useful enough to be worth merging into
the stable branch.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-16 22:53:11 -07:00
Linus Torvalds 4c068a9831 tree_entry(): new tree-walking helper function
This adds a "tree_entry()" function that combines the common operation of
doing a "tree_entry_extract()" + "update_tree_entry()".

It also has a simplified calling convention, designed for simple loops
that traverse over a whole tree: the arguments are pointers to the tree
descriptor and a name_entry structure to fill in, and it returns a boolean
"true" if there was an entry left to be gotten in the tree.

This allows tree traversal with

	struct tree_desc desc;
	struct name_entry entry;

	desc.buf = tree->buffer;
	desc.size = tree->size;
	while (tree_entry(&desc, &entry) {
		... use "entry.{path, sha1, mode, pathlen}" ...
	}

which is not only shorter than writing it out in full, it's hopefully less
error prone too.

[ It's actually a tad faster too - we don't need to recalculate the entry
  pathlength in both extract and update, but need to do it only once.
  Also, some callers can avoid doing a "strlen()" on the result, since
  it's returned as part of the name_entry structure.

  However, by now we're talking just 1% speedup on "git-rev-list --objects
  --all", and we're definitely at the point where tree walking is no
  longer the issue any more. ]

NOTE! Not everybody wants to use this new helper function, since some of
the tree walkers very much on purpose do the descriptor update separately
from the entry extraction. So the "extract + update" sequence still
remains as the core sequence, this is just a simplified interface.

We should probably add a silly two-line inline helper function for
initializing the descriptor from the "struct tree" too, just to cut down
on the noise from that common "desc" initializer.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-30 23:03:01 -07:00
Linus Torvalds f75e53edb3 Convert "mark_tree_uninteresting()" to raw tree walker
Not very many users to go..

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-29 19:08:29 -07:00
Linus Torvalds 2d9c58c69d Remove "tree->entries" tree-entry list from tree parser
Instead, just use the tree buffer directly, and use the tree-walk
infrastructure to walk the buffers instead of the tree-entry list.

The tree-entry list is inefficient, and generates tons of small
allocations for no good reason. The tree-walk infrastructure is
generally no harder to use than following a linked list, and allows
us to do most tree parsing in-place.

Some programs still use the old tree-entry lists, and are a bit
painful to convert without major surgery. For them we have a helper
function that creates a temporary tree-entry list on demand.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-29 19:06:59 -07:00
Linus Torvalds 3a7c352bd0 Make "tree_entry" have a SHA1 instead of a union of object pointers
This is preparatory work for further cleanups, where we try to make
tree_entry look more like the more efficient tree-walk descriptor.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-29 19:05:06 -07:00
Linus Torvalds 508d9e372e Fix "--abbrev=xyz" for revision listing
The revision argument parsing was happily parsing "--abbrev", but it
didn't parse "--abbrev=<n>".

Which was hidden by the fact that the diff options _would_ parse
--abbrev=<n>, so it would actually silently parse it, it just
wouldn't use it for the same things that a plain "--abbrev" was
used for.

Which seems a bit insane.

With this patch, if you do "git log --abbrev=10" it will abbreviate the
merge parent commit ID's to ten hex characters, which was probably what
you expected.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-28 09:45:16 -07:00
Junio C Hamano 45f75a0167 Merge branch 'fix'
* fix:
  Separate object name errors from usage errors
  Documentation: {caret} fixes (git-rev-list.txt)
  Fix "git diff --stat" with long filenames
  Fix repo-config set-multivar error return path.
2006-05-08 16:40:23 -07:00
Dmitry V. Levin 31fff305bc Separate object name errors from usage errors
Separate object name errors from usage errors.

Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-08 16:25:33 -07:00
Junio C Hamano 230f544e87 Merge branch 'jc/diff'
* jc/diff:
  builtin-diff: call it "git-diff", really.
  builtin-diff.c: die() formatting type fix.
  built-in diff: assorted updates.
  built-in diff.
2006-05-03 23:54:34 -07:00
Junio C Hamano 935e714204 Merge branch 'fix'
* fix:
  fix various typos in documentation
2006-05-03 17:15:06 -07:00
Matthias Kestenholz de5f2bf361 fix various typos in documentation
Signed-off-by: Matthias Kestenholz <matthias@spinlock.ch>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-03 14:08:41 -07:00
Junio C Hamano 746437d534 Merge branch 'jc/xsha1-2'
* jc/xsha1-2:
  Extended SHA1 -- "rev^@" syntax to mean "all parents"
2006-05-01 22:55:40 -07:00
Junio C Hamano ea4a19e172 Extended SHA1 -- "rev^@" syntax to mean "all parents"
A short-hand "rev^@" is understood to be "all parents of the
named commit" with this patch.  So you can do

	git show v1.0.0^@

to view the parents of a merge commit,

	gitk ^v1.0.0^@ v1.0.4

to view the log between two revs (including the bottom one), and

	git diff --cc v1.1.0 v1.0.0^@

to inspect what got changed from the merge parents of v1.0.0 to v1.1.0.

This might be just my shiny new toy that is not very useful in
practice.  I needed it to do the multi-tree diff on Len's
infamous 12-way Octopus; typing "diff --cc funmerge funmerge^1
funmerge^2 funmerge^3 ..." was too painful.

[jc: taking suggestions from Linus and Johannes to match expectations
from shell users who are used to see $@ or $* either of which makes
sense.  I tend to write "$@" more often so...]

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-04-30 17:55:33 -07:00
Junio C Hamano 0fe7c1de16 built-in diff: assorted updates.
"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>
2006-04-29 01:32:53 -07:00
Junio C Hamano ea92f41ff9 revision parsing: make "rev -- paths" checks stronger.
If you don't have a "--" marker, then:

 - all of the arguments we are going to assume are pathspecs
   must exist in the working tree.

 - none of the arguments we parsed as revisions could be
   interpreted as a filename.

so that there really isn't any possibility of confusion in case
somebody does have a revision that looks like a pathname too.

The former rule has been in effect; this implements the latter.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-04-26 17:08:44 -07:00
Junio C Hamano 69bcc43eca Merge branch 'fix'
* fix:
  commit-tree.c: check_valid() microoptimization.
  Fix filename verification when in a subdirectory
  rebase: typofix.
  socksetup: don't return on set_reuse_addr() error
2006-04-26 17:08:00 -07:00
Linus Torvalds e23d0b4a4a Fix filename verification when in a subdirectory
When we are in a subdirectory of a git archive, we need to take the prefix
of that subdirectory into accoung when we verify filename arguments.

Noted by Matthias Lederhofer

This also uses the improved error reporting for all the other git commands
that use the revision parsing interfaces, not just git-rev-parse. Also, it
makes the error reporting for mixed filenames and argument flags clearer
(you cannot put flags after the start of the pathname list).

[jc: with fix to a trivial typo noticed by Timo Hirvonen]

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-04-26 12:16:21 -07:00