Not on all platforms are size_t and unsigned long equivalent.
Since I do not know how portable %z is, I play safe, and just
cast the respective variables to unsigned long.
Signed-off-by: NJohannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

When we remove the last reflog in a directory, opendir() would
succeed and we would iterate over its dirents, expecting retval
to be initialized to zero and setting it to non-zero only upon
seeing an error.  If the directory is empty, oops!, we do not
have anybody that touches retval.

The problem is because we initialize retval to errno even on
success from opendir(), which would leave the errno unmolested.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

* 'master' of git://repo.or.cz/git/fastimport:
  Add a Tips and Tricks section to fast-import's manual.
  Don't crash fast-import if the marks cannot be exported.
  Dump all refs and marks during a checkpoint in fast-import.
  Teach fast-import how to sit quietly in the corner.
  Teach fast-import how to clear the internal branch content.
  Minor timestamp related documentation corrections for fast-import.

Earlier we only used loose refs to anchor already existing
objects.  When cloning from a repository that forked relatively
long time ago from the reference repository, this made the
want/have exchange by fetch-pack to do unnecessary work.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

There has been some informative lessons learned in the gfi user
community, and these really should be written down and documented
for future generations of frontend developers.
Signed-off-by: NShawn O. Pearce <spearce@spearce.org>

Use sed instead, it comes with cygwin and there is almost no chance of
someone installing a sed with default CRLF lineendings by accident.
Signed-off-by: NAlex Riesen <raa.lkml@gmail.com>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Signed-off-by: NMichael <barra_cuda@katamail.com>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Apparently fast-import used to die a horrible death if we
were unable to open the marks file for output.  This is
slightly less than ideal, especially now that we dump
the marks as part of the `checkpoint` command.
Signed-off-by: NShawn O. Pearce <spearce@spearce.org>

If the frontend asks us to checkpoint (via the explicit checkpoint
command) its probably because they are afraid the current import
will crash/fail/whatever and want to make sure they can pickup from
the last checkpoint.  To do that sort of recovery, we will need the
current tip of every branch and tag available at the next startup.
Signed-off-by: NShawn O. Pearce <spearce@spearce.org>

Often users will be running fast-import from within a larger frontend
process, and this may be a frequent periodic tool such as a future
edition of `git-svn fetch`.  We don't want to bombard users with our
large stats output if they won't be interested in it, so `--quiet`
is now an option to make gfi be more silent.
Signed-off-by: NShawn O. Pearce <spearce@spearce.org>

Some frontends may not be able to (easily) keep track of which files
are included in the branch, and which aren't.  Performing this
tracking can be tedious and error prone for the frontend to do,
especially if its foreign data source cannot supply the changed
path list on a per-commit basis.

fast-import now allows a frontend to request that a branch's tree
be wiped clean (reset to the empty tree) at the start of a commit,
allowing the frontend to feed in all paths which belong on the branch.

This is ideal for a tar-file importer frontend, for example, as
the frontend just needs to reformat the tar data stream into a gfi
data stream, which may be something a few Perl regexps can take
care of. :)
Signed-off-by: NShawn O. Pearce <spearce@spearce.org>

As discussed on the mailing list, the documentation used here was
not quite accurate.  Improve upon it.
Signed-off-by: NShawn O. Pearce <spearce@spearce.org>

This was useful when the current recursive was in development, and
the original Python version was still called git-merge-recursive.

Now the synonym has served us well, it is time to move on.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Schedule git-diff-stages and git-resolve to be removed by 1.5.1
Signed-off-by: NJunio C Hamano <junkio@cox.net>

* 'master' of git://repo.or.cz/git/fastimport: (81 commits)
  S_IFLNK != 0140000
  Don't do non-fastforward updates in fast-import.
  Support RFC 2822 date parsing in fast-import.
  Minor fast-import documentation corrections.
  Remove unnecessary null pointer checks in fast-import.
  Correct fast-import timezone documentation.
  Correct minor style issue in fast-import.
  Correct compiler warnings in fast-import.
  Remove --branch-log from fast-import.
  Initial draft of fast-import documentation.
  Don't support shell-quoted refnames in fast-import.
  Reduce memory usage of fast-import.
  Include checkpoint command in the BNF.
  Accept 'inline' file data in fast-import commit structure.
  Reduce value duplication in t9300-fast-import.
  Create test case for fast-import.
  Support delimited data regions in fast-import.
  Remove unnecessary options from fast-import.
  Use fixed-size integers when writing out the index in fast-import.
  Always use struct pack_header for pack header in fast-import.
  ...

This has completely been superseded by built-in --color option.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

If not, the binaries get built once with the correct CFLAGS, and then again
with the ones in the Makefile when installing
Signed-off-by: NHorst H. von Brand <vonbrand@inf.utfsm.cl>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Signed-off-by: NUwe Kleine-König <ukleinek@informatik.uni-freiburg.de>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Signed-off-by: NShawn O. Pearce <spearce@spearce.org>

If fast-import is being used to update an existing branch of
a repository, the user may not want to lose commits if another
process updates the same ref at the same time.  For example, the
user might be using fast-import to make just one or two commits
against a live branch.

We now perform a fast-forward check during the ref updating process.
If updating a branch would cause commits in that branch to be lost,
we skip over it and display the new SHA1 to standard error.

This new default behavior can be overridden with `--force`, like
git-push and git-fetch.
Signed-off-by: NShawn O. Pearce <spearce@spearce.org>

Since some frontends may be working with source material where
the dates are only readily available as RFC 2822 strings, it is
more friendly if fast-import exposes Git's parse_date() function
to handle the conversion.  This way the frontend doesn't need
to perform the parsing itself.

The new --date-format option to fast-import can be used by a
frontend to select which format it will supply date strings in.
The default is the standard `raw` Git format, which fast-import
has always supported.  Format rfc2822 can be used to activate the
parse_date() function instead.

Because fast-import could also be useful for creating new, current
commits, the format `now` is also supported to generate the current
system timestamp.  The implementation of `now` is a trivial call
to datestamp(), but is actually a whole whopping 3 lines so that
fast-import can verify the frontend really meant `now`.

As part of this change I have added validation of the `raw` date
format.  Prior to this change fast-import would accept anything
in a `committer` command, even if it was seriously malformed.
Now fast-import requires the '> ' near the end of the string and
verifies the timestamp is formatted properly.
Signed-off-by: NShawn O. Pearce <spearce@spearce.org>

Corrected a couple of header markup lines which were shorter than the
actual header, and made the `data` commands two formats into a named
list, which matches how we document the two formats of the `M` command
within a commit.

Also tried to simplify the language about our decimal integer format;
Linus pointed out I was probably being too specific at the cost of
reduced readability.
Signed-off-by: NShawn O. Pearce <spearce@spearce.org>

There is no need to check for a NULL pointer before invoking free(),
the runtime library automatically performs this check anyway and
does nothing if a NULL pointer is supplied.
Signed-off-by: NShawn O. Pearce <spearce@spearce.org>

Andy Parkins and Linus Torvalds both noticed that the description
of the timezone was incorrect.  Its not expressed in minutes.
Its more like "hhmm", where "hh" is the number of hours and "mm"
is the number of minutes shifted from GMT/UTC.
Signed-off-by: NShawn O. Pearce <spearce@spearce.org>

git-cvsserver does not want the boundary commits shown any differently.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

An earlier commit 04179418 broke gitweb.  Badly.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

This allows you to set up mothership-satellite configuration
more symmetrically and naturally by allowing the globbing
wildcard refspec for git-push.  On your satellite machine:

    [remote "mothership"]
        url = mothership:project.git
        fetch = refs/heads/*:refs/remotes/mothership/*
        push = refs/heads/*:refs/remotes/satellite/*

You would say "git fetch mothership" to update your tracking
branches under mothership/ to keep track of the progress on the
mothership side, and when you are done working on the satellite
machine, you would "git push mothership" to update their
tracking branches under satellite/.  Corresponding configuration
on the mothership machine can be used to make "git fetch satellite"
update its tracking branch under satellite/. on the mothership.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Junio noticed that I was using a different style in fast-import
for returned pointers than the rest of Git.  Before merging this
code into the main git.git tree I'd like to make it consistent,
as this style variation was not intentional.
Signed-off-by: NShawn O. Pearce <spearce@spearce.org>

Junio noticed these warnings/errors in fast-import when compiling
with `-Werror -ansi -pedantic`.  A few changes are to reduce compiler
warnings, while one (in cmd_merge) is a bug fix.
Signed-off-by: NShawn O. Pearce <spearce@spearce.org>

The --branch-log option and its associated code hasn't been used in
several months, as its not really very useful for debugging fast-import
or a frontend.  I don't plan on supporting it in this state long-term,
so I'm killing it now before it gets distributed to a wider audience.
Signed-off-by: NShawn O. Pearce <spearce@spearce.org>

Completing the 3 core subcommands to git-remote, along with the
names of remotes for 'show' and 'prune' (which take only existing
remotes) is handy.
Signed-off-by: NShawn O. Pearce <spearce@spearce.org>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Apparently `git-rebase -m` uses a metadata directory within .git
(.git/.dotest-merge) rather than .dotest used by git-am (and
git-rebase without the -m option).  This caused the completion code
to not offer --continue, --skip or --abort when working within a
`git-rebase -m` session.
Signed-off-by: NShawn O. Pearce <spearce@spearce.org>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

This is a first pass at the manpage for git-fast-import.

I have tried to cover the input format in extreme detail, creating a
reference which is more detailed than the BNF grammar appearing in
the header of fast-import.c.  I have also covered some details about
gfi's performance and memory utilization, as well as the average
learning curve required to create a gfi frontend application (as it
is far lower than it might appear on first glance).

The documentation still lacks real example input streams, which may
turn out to be difficult to format in asciidoc due to the blank lines
which carry meaning within the format.
Signed-off-by: NShawn O. Pearce <spearce@spearce.org>

The current implementation of shell-style quoted refnames and
SHA-1 expressions within fast-import contains a bad memory leak.
We leak the unquoted strings used by the `from` and `merge`
commands, maybe others.  Its also just muddling up the docs.

Since Git refnames cannot contain LF, and that is our delimiter
for the end of the refname, and we accept any other character
as-is, there is no reason for these strings to support quoting,
except to be nice to frontends.  But frontends shouldn't be
expecting to use funny refs in Git, and its just as simple to
never quote them as it is to always pass them through the same
quoting filter as pathnames.  So frontends should never quote
refs, or ref expressions.
Signed-off-by: NShawn O. Pearce <spearce@spearce.org>

The earlier commit d7b6c3c0 (Aug 15, 2006) introduced this
mismerge when most of the CFLAGS were renamed to BASIC_CFLAGS.

Not that it matters right now, since we do not compile XS
Perl extensions which wanted non GNU subset of ALL_CFLAGS for
compilation, but we should make things consistent.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

If you resize the terminal while less is waiting for input, less
will exit entirely without even showing the output. This is very
noticeable if you do something like "git diff" on a big and
cold-cache tree and git takes a few seconds to think, and then
you resize the window while it's preparing. Boom. No output AT
ALL.

The way to reproduce the problem is to do some pager operation
that takes a while in git, and resizing the window while git is
thinking about the output.  Try

	git diff --stat v2.6.12..

in the kernel tree to do something where it takes a while for git to start
outputting information.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

This adds three options to 'git-remote add'.

 * -f (or --fetch) option tells it to also run the initial "git
    fetch" using the newly created remote shorthand.

 * -t (or --track) option tells it not to use the default
    wildcard to track all branches.

 * -m (or --master) option tells it to make the
    remote/$name/HEAD point at a remote tracking branch other
    than master.

For example, with this I can say:

  $ git remote add -f -t master -t quick-start -m master \
    jbf-um git://linux-nfs.org/~bfields/git.git/

to

 (1) create remote.jbf-um.url;

 (2) track master and quick-start branches (and no other); the
     two -t options create these two lines:

       fetch = +refs/heads/master:refs/remotes/jbf-um/master
       fetch = +refs/heads/quick-start:refs/remotes/jbf-um/quick-start

 (3) set up remotes/jbf-um/HEAD to point at jbf-um/master so
     that later I can say "git log jbf-um"

Or I could do

  $ git remote add -t 'ap/*' andy /home/andy/git.git

to make Andy's topic branches kept track of under refs/remotes/andy/ap/.

Other possible improvements I considered but haven't implemented
(hint, hint) are:

 * reject wildcard letters other than a trailing '*' to the -t
   parameter;

 * make -m optional and when the first -t parameter does not
   have the trailing '*' default to that value (so the above
   example does not need to say "-m master");

 * if -m is not given, and -t parameter ends with '*' (i.e. the
   above defaulting did not tell us where to point HEAD at), and
   if we did the fetch with -f, check if 'master' was fetched
   and make HEAD point at it.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Signed-off-by: NJunio C Hamano <junkio@cox.net>

git-merge-recursive wants an null tree as the fake merge base
while producing the merge result tree.  The null tree does not
have to be written out in the object store as it won't be part
of the result, and it is a prime example for using the new
pretend_sha1_file() function.

git-blame needs to register an arbitrary data to in-core index
while annotating a working tree file (or standard input), but
git-blame is a read-only application and the user of it could
even lack the privilege to write into the object store; it is
another good example for pretend_sha1_file().
Signed-off-by: NJunio C Hamano <junkio@cox.net>

The new interface allows an application to temporarily hash a
small number of objects and pretend that they are available in
the object store without actually writing them.
Signed-off-by: NJunio C Hamano <junkio@cox.net>