This patch makes the first half of write_sha1_file() and
index_fd() externally visible, to allow callers to compute the
object ID without actually storing it in the object database.

[JC demangled the whitespaces himself because he liked the patch
 so much, and reworked the interface to index_fd() slightly,
 taking suggestion from Linus and of his own.]
Signed-off-by: NBryan Larsen <bryan.larsen@gmail.com>
Signed-off-by: NJunio C Hamano <junkio@cox.net>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

That will be the normal way of cloning anonymously for a while, so let's
make sure it's easy to use.

Do the default "try xyz.git xyz fails" thing for the directory we get
passed in.

I'm bored with doing it by hand all the time.

Sure, "install" will default to installing it executable anyway, but
this is the right thing to do.

This silently adds the ".git" directory component if needed, so you
don't need to state it explicitly for the source.  Also, it turns the
source into an absolute pathname when local, so that you can use
relative pathnames without losing sight of the source when we cd into
the destination.

It only does local and ssh pushes, because it's really just a wrapper
for git-send-pack.  We might make it do an rsync mirror or something, of
course.

The protocol always supported it, but send-pack didn't actually know how
to tell the other side about a new branch/tag.

NOTE! You'll have to name it explicitly on the command line: if you
don't name any branches, git-send-pack will default to the branches that
already exist.

It always uses a git-relative pathname, ie "refs/heads/master" instead of
".git/refs/heads/master" or whatever your GIT_DIR might be.

This way when we send refs back-and-forth between repositories, there's
never any question about GIT_DIR on either side.

This tries to be more lenient to the users and stricter to the
attackers by quoting the input properly for shell safety,
instead of forbidding certain characters from the input.

Things to note:

 - We do not quote "prog" parameter (which comes from --exec).
   The user should know what he is doing.  --exec='echo foo'
   will supply the first two parameters to the resulting
   command, while --exec="'echo foo'" will give the first
   parameter, a single string with a space inside.

 - We do not care too much about leaking the sq_quote() output
   just before running exec().
Signed-off-by: NJunio C Hamano <junkio@cox.net>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

A useful shell safety helper sq_expand() was hidden as a static
function in diff.c.  Extract it out and make it available as
sq_quote().
Signed-off-by: NJunio C Hamano <junkio@cox.net>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

It sets up the normal git environment variables and a few helper
functions (currently just "die()"), and returns ok if it all looks like
a git archive.  So use it something like

	. git-sh-setup-script || die "Not a git archive"

to make the rest of the git scripts more careful and readable.

I'm probably not the only one whose fingers have gotten hard-wired to
use "-u" for "unified diff".

This is the script I use to prepare patches for e-mail submission.
Signed-off-by: NJunio C Hamano <junkio@cox.net>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

I still worry about just quoting things when passing it off to "ssh" or
"sh -c", so I'm being anal.  But _, ^ and , are certainly ok and while
both ~ and @ can have speacial meaning to shell/ssh they are benign.

We used to not count them at all, which then made us complain that there
were no refs.

The current error message does not make any sense.
Signed-off-by: NJunio C Hamano <junkio@cox.net>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

The Makefile in the test suite directory considers any file
matching t[0-9][0-9][0-9][0-9]-*.sh as the top-level test script
to be executed.  Unfortunately this was not documented, and the
common test library, t6000-lib.sh was named to match that
pattern.  This caused t6000-lib.sh to be called from Makefile as
the top-level program, causing it to leave t/sed.script file
behind.  Rename it to t6000lib.sh to prevent this, and document
the naming convention a bit more clearly.
Signed-off-by: NJunio C Hamano <junkio@cox.net>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

When we are cloning a repository on a local filesystem, it is
faster to just create a hard linkfarm of .git/object hierarchy
and copy the .git/refs files.  By default, the script uses the
clone-pack method, but it can be told with the -l flag to do the
hard linkfarm (falling back on recursive file copy) to replicate
the .git/object hierarchy.
Signed-off-by: NJunio C Hamano <junkio@cox.net>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

targets: git.spec, dist, and rpm.  A simple 'make rpm' will build the rpm.
Also adds git.spec.in which is used to generate git.spec.
Signed-off-by: NChris Wright <chrisw@osdl.org>

Local function that wasn't marked static

Replace (*f)() with f() where the former idiom was used in epoch.c
Signed-off-by: NJon Seymour <jon.seymour@gmail.com>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

This change ensures that git-rev-list --merge-order produces the same result
irrespective of what position the --merge-order argument appears in the argument
list.
Signed-off-by: NJon Seymour <jon.seymour@gmail.com>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

When sed uses \n rather than ; as a separator (for BSD sed(1) compat),
it is cleaner to use a file directly, rather than an environment
variable containing \n characters.

This change changes t/t6000 write to sed.script directly and changes
the other tests to remove knowledge of sed.script.
Signed-off-by: NJon Seymour <jon.seymour@gmail.com>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Signed-off-by: NJon Seymour <jon.seymour@gmail.com>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

It's cheaper to calculate, and doesn't give different results depending
on the order of the arguments passed in (and is thus more appropriate
for something like gitk that can validly take the unordered "--all" flag
to show all branches).

The previous dup fix seems to have fixed --topo-order.  Holler if you
still see problems.

That's what we should have done in the first place, since it not only
avoids another unnecessary flag, it also protects the commits from
showing up as duplicates later when they show up as parents of another
commit (in the pop_most_recent_commit() path).

This will hopefully also fix --topo-sort.

This was my cherry-pickng merge bug.  But topo-order still shows strange
behaviour with multiple heads, so keep gitk using --merge-order for now.

IIRC our strategy was to let the users' umask take care of the
final mode bits.  This patch fixes places that deviate from it.
Signed-off-by: NJunio C Hamano <junkio@cox.net>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

The function write_one_ref() is passed the list of refs received
from the other end, which was obtained by directory traversal
under $GIT_DIR/refs; this can contain paths other than what
git-init-db prepares and would fail to clone when there is
such.
Signed-off-by: NJunio C Hamano <junkio@cox.net>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

This patch passes the test case introduced by the previous patch.
Signed-off-by: NJon Seymour <jon.seymour@gmail.com>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

This test case demonstrates a problem with --merge-order.

A
|
B
|\
C D
|/
E
|
F

git-rev-list --merge-order A B doesn't produce the expected output of

A
B
D
C
E
F

The problem is fixed by a subsequent patch.
Signed-off-by: NJon Seymour <jon.seymour@gmail.com>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

This patch implements a small tidy up of rev-list.c to reduce
(but not eliminate) the amount of ugliness associated
with the merge_order flag.
Signed-off-by: NJon Seymour <jon.seymour@gmail.com>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

This introduces an in-place topological sort procedure to commit.c.

Given a list of commits, sort_in_topological_order() will perform an in-place
topological sort of that list.

The invariant that applies to the resulting list is:

       a reachable from b => ord(b) < ord(a)

This invariant is weaker than the --merge-order invariant, but is cheaper
to calculate (assuming the list has been identified) and will serve any
purpose where only a minimal topological order guarantee is required.
Signed-off-by: NJon Seymour <jon.seymour@gmail.com>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

This allows you to do

	git diff v2.6.12..v2.6.13-rc1 drivers/pcmcia

to see the diff between v2.6.12 and v2.6.13-rc1 as limited by the
filename argument.

The scripts that use this (notably "git diff") will want to split up
flags and file arguments.

..and move the DUPCHECK to rev-list.c since both the merge-order and the
upcoming topo-sort get confused by dups.

Jon wants the commits in a different order for merge-order.