refs: document the lifetime of the args passed to each_ref_fn
The lifetime of the memory pointed to by the refname and sha1
arguments to each_ref_fn was never documented, but some callers used
to assume that it was essentially permanent. In fact the API does
*not* guarantee that these objects live beyond a single callback
invocation.
In the current code, the lifetimes are bound together with the
lifetimes of the ref_caches. Since these are usually long, the
callers usually got away with their sloppiness. But even today, if a
ref_cache is invalidated the memory can be freed. And planned changes
to reference caching, needed to eliminate race conditions, will
probably need to shorten the lifetimes of these objects.
The commits leading up to this have (hopefully) fixed all of the
callers of the for_each_ref()-like functions. This commit does the
last step: documents what each_ref_fn callbacks can assume about
object lifetimes.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
exclude_existing(): set existing_refs.strdup_strings
The each_ref_fn add_existing() adds refnames to the existing_refs
list. But the lifetimes of these refnames is not guaranteed by the
refs API, so configure the string_list to make copies as it adds them.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
string_list_add_refs_by_glob(): add a comment about memory management
Since string_list_add_one_ref() adds refname to the string list, but
the lifetime of refname is limited, it is important that the
string_list passed to string_list_add_one_ref() has strdup_strings
set. Document this fact.
All current callers do the right thing.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
object_array_entry: fix memory handling of the name field
Previously, the memory management of the object_array_entry::name
field was inconsistent and undocumented. object_array_entries are
ultimately created by a single function, add_object_array_with_mode(),
which has an argument "const char *name". This function used to
simply set the name field to reference the string pointed to by the
name parameter, and nobody on the object_array side ever freed the
memory. Thus, it assumed that the memory for the name field would be
managed by the caller, and that the lifetime of that string would be
at least as long as the lifetime of the object_array_entry. But
callers were inconsistent:
* Some passed pointers to constant strings or argv entries, which was
OK.
* Some passed pointers to newly-allocated memory, but didn't arrange
for the memory ever to be freed.
* Some passed the return value of sha1_to_hex(), which is a pointer to
a statically-allocated buffer that can be overwritten at any time.
* Some passed pointers to refnames that they received from a
for_each_ref()-type iteration, but the lifetimes of such refnames is
not guaranteed by the refs API.
Bring consistency to this mess by changing object_array to make its
own copy for the object_array_entry::name field and free this memory
when an object_array_entry is deleted from the array.
Many callers were passing the empty string as the name parameter, so
as a performance optimization, treat the empty string specially.
Instead of making a copy, store a pointer to a statically-allocated
empty string to object_array_entry::name. When deleting such an
entry, skip the free().
Change the callers that were already passing copies to
add_object_array_with_mode() to either skip the copy, or (if the
memory needed to be allocated anyway) freeing the memory itself.
A part of this commit effectively reverts
70d26c6e76 read_revisions_from_stdin: make copies for handle_revision_arg
because the copying introduced by that commit (which is still
necessary) is now done at a deeper level.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
, which wedged a pointer to parent into the object_array_entry's name
field. The parent pointer was passed to traverse_one_object(), even
though that function *didn't use it*.
The useless code has been deleted over time. Commit
a1cdc25172 fsck: drop unused parameter from traverse_one_object()
removed the parent pointer from traverse_one_object()'s
signature. Commit
object_array_remove_duplicates(): rewrite to reduce copying
The old version copied one entry to its destination position, then
deleted any matching entries from the tail of the array. This
required the tail of the array to be copied multiple times. It didn't
affect the complexity of the algorithm because the whole tail has to
be searched through anyway. But all the copying was unnecessary.
Instead, check for the existence of an entry with the same name in the
*head* of the list before copying an entry to its final position.
This way each entry has to be copied at most one time.
Extract a helper function contains_name() to do a bit of the work.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add a function that allows unwanted entries in an object_array to be
removed. This encapsulation is a step towards giving object_array
ownership of its entries' name memory.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
cmd_diff(): make it obvious which cases are exclusive of each other
At first glance the OBJ_COMMIT, OBJ_TREE, and OBJ_BLOB cases look like
they might be mutually exclusive. But the OBJ_COMMIT case doesn't end
the loop iteration with "continue" like the other two cases, but
rather falls through. So use if...else if...else construct to make it
more obvious that only the last two cases are mutually exclusive.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
add_rev_cmdline(): make a copy of the name argument
Instead of assuming that the memory pointed to by the name argument
will live forever, make a local copy of it before storing it in the
ref_cmdline_info.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Do not retain a reference to the refname passed to the each_ref_fn
callback get_name(), because there is no guarantee of the lifetimes of
these names. Instead, make a local copy when needed.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
zsh completion wrapper doesn't reimplement __gitcompadd(). Although it
should be trivial to do that, let's use __gitcomp_nl() which achieves
exactly the same thing, specially since the suffix ($4) has to be empty.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* git://git.bogomips.org/git-svn:
git-svn: introduce --parents parameter for commands branch and tag
git-svn: clarify explanation of --destination argument
git-svn: multiple fetch/branches/tags keys are supported
git-svn: clarify explanation of --destination argument
The existing documentation for "-d" does not make it obvious whether
its argument is supposed to be a full svn path, a partial svn path,
the glob from the config file, or what. Clarify the text and add an
example to get the reader started.
Reported-by: Nathan Gray <n8gray@n8gray.org> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Eric Wong <normalperson@yhbt.net>
git-svn: multiple fetch/branches/tags keys are supported
"git svn" can be configured to use multiple fetch, branches, and tags
refspecs by passing multiple --branches or --tags options at init time
or editing the configuration file later, which can be handy when
working with messy Subversion repositories. Add a note to the
configuration section documenting how this works.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Eric Wong <normalperson@yhbt.net>
git clone hangs on windows, and file.write would return errno 22 inside
of mercurial's windows.winstdout wrapper class. This patch sets stdout's
mode to binary, fixing both issues.
[fc: cleaned up]
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
difftool: fix dir-diff when file does not exist in working tree
Commit 02c5631 (difftool --dir-diff: symlink all files matching the
working tree, 2013-03-14) does not handle the case where a file that is
being compared does not exist in the working tree. Fix this by checking
for existence explicitly before running git-hash-object.
Reported-by: Kevin Bracey <kevin@bracey.fi> Signed-off-by: John Keeping <john@keeping.me.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Different versions of Mercurial have different arguments for
bookmarks.updatefromremote(), while it should be possible to call the
right function with the right arguments depending on the version, it's
safer to restore the old behavior for now.
Reported by Rodney Lorrimar.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
git-submodule.txt: Clarify 'init' and 'add' subcommands.
Describe how 'add' sets the submodule's logical name, which is used in
the configuration entry names.
Clarify that 'init' only sets up the configuration entries for
submodules that have already been added elsewhere. Describe that
<path> arguments limit the submodules that are configured.
Signed-off-by: Dale Worley <worley@ariadne.com> Acked-by: Jens Lehmann <Jens.Lehmann@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Commit 95b0c60 (remote-bzr: add support for bzr repos) introduced a
regression by assuming all bzr remote repos are listable, but they are
not.
If they are not listable they are basically useless, so let's assume
there is no bzr repo.
Reported-by: Thorsten Kranzkowski <dl8bcu@dl8bcu.de> Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
In certain situations we might end up pushing garbage revisions
(e.g. in a rebase), and the patches to deal with that haven't been
merged yet. So let's disable forced pushes by default.
We are essentially reverting back to the old v1.8.2 behavior, to
minimize the possibility of regressions, but in a way the user can
configure.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
If a clone exists with the old organization (v1.8.2) it will prevent
the new shared bzr repository organization from working, so let's
remove this repository, which is not used any more.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* git://ozlabs.org/~paulus/gitk:
gitk: On OSX, bring the gitk window to front
gitk: Add support for -G'regex' pickaxe variant
gitk: Add menu item for reverting commits
gitk: Simplify file filtering
gitk: Display the date of a tag in a human-friendly way
gitk: Improve behaviour of drop-down lists
gitk: Move hard-coded colors to .gitk
On OSX, Tcl/Tk application windows are created behind all
the applications down the stack of windows. This is very
annoying, because once a gitk window appears, it's the
downmost window and switching to it is pain.
The patch is: if we are on OSX, use osascript to
bring the current Wish process window to front.
Signed-off-by: Tair Sabirgaliev <tair.sabirgaliev@gmail.com>
Thanks-to: Stefan Haller <lists@haller-berlin.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
gitk: Display the date of a tag in a human-friendly way
By selecting a tag within gitk you can display information about it.
This information is output by using the command
'git cat-file tag <tagid>'
This outputs the *raw* information from the tag, amongst which is the
time - in seconds since the epoch. As useful as that value is, I find it
a lot easier to read and process time which it is something like:
"Mon Dec 31 14:26:11 2012 -0800"
This change will modify the display of tags in gitk like so:
@@ -1,7 +1,7 @@
object 5d417842efeafb6e109db7574196901c4e95d273
type commit
tag v1.8.1
-tagger Junio C Hamano <gitster@pobox.com> 1356992771 -0800
+tagger Junio C Hamano <gitster@pobox.com> Mon Dec 31 14:26:11 2012 -0800
Git 1.8.1
-----BEGIN PGP SIGNATURE-----
Signed-off-by: Anand Kumria <wildfire@progsoc.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
The drop-down lists used for things like the criteria for finding
commits (containing/touching paths/etc.) use a combobox if we are
using the ttk widgets. By default the combobox exports its value
as the selection when it is changed, which is unnecessary, and sometimes
the combobox wouldn't release the selection, which is annoying.
To fix this, we make these comboboxes not export their selection,
and also clear their selection whenever they are changed. This makes
them more like a simple selection of alternatives, improving the look
and feel of gitk.
CodingGuidelines: Documentation/*.txt are the sources
People not familiar with AsciiDoc may not realize they are
supposed to update *.txt files and not *.html/*.1 files when
preparing patches to the project.
Signed-off-by: Dale Worley <worley@ariadne.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* maint:
Git 1.8.2.3
t5004: avoid using tar for checking emptiness of archive
t5004: ignore pax global header file
mergetools/kdiff3: do not use --auto when diffing
transport-helper: trivial style cleanup
cherry-pick: picking a tag that resolves to a commit is OK
Earlier, 21246dbb9e0a (cherry-pick: make sure all input objects are
commits, 2013-04-11) tried to catch an unlikely "git cherry-pick $blob"
as an error, but broke a more important use case to cherry-pick a
tag that points at a commit.
t5004: avoid using tar for checking emptiness of archive
Test 2 of t5004 checks if a supposedly empty tar archive really
contains no files. 24676f02 (t5004: fix issue with empty archive test
and bsdtar) removed our commit hash to make it work with bsdtar, but
the test still fails on NetBSD and OpenBSD, which use their own tar
that considers a tar file containing only NULs as broken.
Here's what the different archivers do when asked to create a tar
file without entries:
So NetBSD's native tar creates an empty file, while GNU tar and bsdtar
both give us 10KB of NULs -- just like git archive with an empty tree.
Now let's see how the archivers handle these two kinds of empty tar
files:
$ tar tf zero.tar; echo $?
tar: Unexpected EOF on archive file
1
$ gtar tf zero.tar; echo $?
gtar: This does not look like a tar archive
gtar: Exiting with failure status due to previous errors
2
$ bsdtar tf zero.tar; echo $?
0
$ tar tf tenk.tar; echo $?
tar: Cannot identify format. Searching...
tar: End of archive volume 1 reached
tar: Sorry, unable to determine archive format.
1
$ gtar tf tenk.tar; echo $?
0
$ bsdtar tf tenk.tar; echo $?
0
NetBSD's tar complains about both, bsdtar happily accepts any of them
and GNU tar doesn't like zero-length archive files. So the safest
course of action is to stay with our block-of-NULs format which is
compatible with GNU tar and bsdtar, as we can't make NetBSD's native
tar happy anyway.
We can simplify our test, however, by taking tar out of the picture.
Instead of extracting the archive and checking for the non-presence of
files, check if the file has a size of 10KB and contains only NULs.
This makes t5004 pass on NetBSD and OpenBSD.
Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Versions of tar that don't know pax headers -- like the ones in NetBSD 6
and OpenBSD 5.2 -- extract them as regular files. Explicitly ignore the
file created for our global header when checking the list of extracted
files, as this is normal and harmless fall-back behaviour. This fixes
test 3 of t5004 on these platforms.
Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <gitster@pobox.com>
The `kdiff3 --auto` help message is, "No GUI if all conflicts are auto-
solvable." This flag was carried over from the original mergetool
commands. diff_cmd() is for two-way comparisons only so remove the
superfluous flag.
Signed-off-by: David Aguilar <davvid@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
The SVN::Fetcher module is now able to filter for inclusion as well
as exclusion (as used by --ignore-path). Also added tests, documentation
changes and git completion script.
If you have an SVN repository with many top level directories and you
only want a git-svn clone of some of them then using --ignore-path is
difficult as it requires a very long regexp. In this case it's much
easier to filter for inclusion.
[ew: remove trailing whitespace]
Signed-off-by: Paul Walmsley <pjwhams@gmail.com> Signed-off-by: Eric Wong <normalperson@yhbt.net>
Git::SVN::*: add missing "NAME" section to perldoc
lexgrog(1) relies on the NAME section to find a manpage's subject's
name and description for easy access later using "man -k". Add the
section it expects.
Noticed using lintian.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Eric Wong <normalperson@yhbt.net>
When svn.pushmergeinfo is set, the target branch is included in the
mergeinfo if it was previously merged into one of the source branches.
SVN does not do this.
Remove merge target branch path from resulting mergeinfo when
svn.pushmergeinfo is set to better match the behavior of SVN. Update the
svn-mergeinfo-push test.
[ew: 80 columns]
Signed-off-by: Michael Contreras <michael@inetric.com> Reported-by: Avishay Lavie <avishay.lavie@gmail.com> Acked-by: Eric Wong <normalperson@yhbt.net>
It's possible that the previous tip goes away, we should not assume it's
always present. Fortunately we are only using it to calculate the
progress to display to the user, so only that needs to be fixed.
Also, add a test that triggers this issue.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
git-merge-tree causes a null pointer dereference when a directory
entry exists in only one or two of the three trees being compared with
no corresponding entry in the other tree(s).
When this happens, we want to handle the entry as a directory and not
attempt to mark it as a file merge. Do this by setting the entries bit
in the directory mask when the entry is missing or when it is a
directory, only performing the file comparison when we know that a file
entry exists.
Reported-by: Andreas Jacobsen <andreas@andreasjacobsen.com> Signed-off-by: John Keeping <john@keeping.me.uk> Tested-by: Andreas Jacobsen <andreas@andreasjacobsen.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* fc/remote-bzr:
remote-bzr: avoid bad refs
remote-bzr: convert all unicode keys to str
remote-bzr: access branches only when needed
remote-bzr: delay peer branch usage
remote-bzr: iterate revisions properly
remote-bzr: improve progress reporting
remote-bzr: add option to specify branches
remote-bzr: add custom method to find branches
remote-bzr: improve author sanitazion
remote-bzr: add support for shared repo
remote-bzr: fix branch names
remote-bzr: add support for bzr repos
remote-bzr: use branch variable when appropriate
remote-bzr: fix partially pushed merge
remote-bzr: fixes for branch diverge
remote-bzr: add support to push merges
remote-bzr: always try to update the worktree
remote-bzr: fix order of locking in CustomTree
remote-bzr: delay blob fetching until the very end
remote-bzr: cleanup CustomTree
Versions of fast-export before v1.8.2 throws a bad 'reset' commands
because of a behavior in transport-helper that is not even needed.
We should ignore them, otherwise we will treat them as branches and
fail.
This was fixed in v1.8.2, but some people use this script in older
versions of git.
Also, check if the ref was a tag, and skip it for now.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
If there's already a remote-helper tracking ref, we can fetch the
SHA-1 to report proper push messages (as opposed to always reporting
[new branch]).
The remote-helper currently can specify the old SHA-1 to avoid this
problem, but there's no point in forcing all remote-helpers to be aware
of git commit ids; they should be able to be agnostic of them.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com> Reviewed-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Merge branch 'tr/remote-tighten-commandline-parsing' into maint
* tr/remote-tighten-commandline-parsing:
remote: 'show' and 'prune' can take more than one remote
remote: check for superfluous arguments in 'git remote add'
remote: add a test for extra arguments, according to docs