git/Documentation/git-archive.txt
Franck Bui-Huu 4df096a5ca Add git-archive
git-archive is a command to make TAR and ZIP archives of a git tree.
It helps prevent a proliferation of git-{format}-tree commands.

Instead of directly calling git-{tar,zip}-tree command, it defines
a very simple API, that archiver should implement and register in
"git-archive.c". This API is made up by 2 functions whose prototype
is defined in "archive.h" file.

 - The first one is used to parse 'extra' parameters which have
   signification only for the specific archiver. That would allow
   different archive backends to have different kind of options.

 - The second one is used to ask to an archive backend to build
   the archive given some already resolved parameters.

The main reason for making this API is to avoid using
git-{tar,zip}-tree commands, hence making them useless. Maybe it's
time for them to die ?

It also implements remote operations by defining a very simple
protocol: it first sends the name of the specific uploader followed
the repository name (git-upload-tar git://example.org/repo.git).
Then it sends options. It's done by sending a sequence of one
argument per packet, with prefix "argument ", followed by a flush.

The remote protocol is implemented in "git-archive.c" for client
side and is triggered by "--remote=<repo>" option. For example,
to fetch a TAR archive in a remote repo, you can issue:

$ git archive --format=tar --remote=git://xxx/yyy/zzz.git HEAD

We choose to not make a new command "git-fetch-archive" for example,
avoind one more GIT command which should be nice for users (less
commands to remember, keeps existing --remote option).

Signed-off-by: Franck Bui-Huu <vagabon.xyz@gmail.com>
Acked-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-09-09 11:57:36 -07:00

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git-archive(1)
==============
NAME
----
git-archive - Creates a archive of the files in the named tree
SYNOPSIS
--------
'git-archive' --format=<fmt> [--list] [--prefix=<prefix>/] [<extra>]
[--remote=<repo>] <tree-ish> [path...]
DESCRIPTION
-----------
Creates an archive of the specified format containing the tree
structure for the named tree. If <prefix> is specified it is
prepended to the filenames in the archive.
'git-archive' behaves differently when given a tree ID versus when
given a commit ID or tag ID. In the first case the current time is
used as modification time of each file in the archive. In the latter
case the commit time as recorded in the referenced commit object is
used instead. Additionally the commit ID is stored in a global
extended pax header if the tar format is used; it can be extracted
using 'git-get-tar-commit-id'. In ZIP files it is stored as a file
comment.
OPTIONS
-------
--format=<fmt>::
Format of the resulting archive: 'tar', 'zip'...
--list::
Show all available formats.
--prefix=<prefix>/::
Prepend <prefix>/ to each filename in the archive.
<extra>::
This can be any options that the archiver backend understand.
--remote=<repo>::
Instead of making a tar archive from local repository,
retrieve a tar archive from a remote repository.
<tree-ish>::
The tree or commit to produce an archive for.
path::
If one or more paths are specified, include only these in the
archive, otherwise include all files and subdirectories.
CONFIGURATION
-------------
By default, file and directories modes are set to 0666 or 0777 in tar
archives. It is possible to change this by setting the "umask" variable
in the repository configuration as follows :
[tar]
umask = 002 ;# group friendly
The special umask value "user" indicates that the user's current umask
will be used instead. The default value remains 0, which means world
readable/writable files and directories.
EXAMPLES
--------
git archive --format=tar --prefix=junk/ HEAD | (cd /var/tmp/ && tar xf -)::
Create a tar archive that contains the contents of the
latest commit on the current branch, and extracts it in
`/var/tmp/junk` directory.
git archive --format=tar --prefix=git-1.4.0/ v1.4.0 | gzip >git-1.4.0.tar.gz::
Create a compressed tarball for v1.4.0 release.
git archive --format=tar --prefix=git-1.4.0/ v1.4.0{caret}\{tree\} | gzip >git-1.4.0.tar.gz::
Create a compressed tarball for v1.4.0 release, but without a
global extended pax header.
git archive --format=zip --prefix=git-docs/ HEAD:Documentation/ > git-1.4.0-docs.zip::
Put everything in the current head's Documentation/ directory
into 'git-1.4.0-docs.zip', with the prefix 'git-docs/'.
Author
------
Written by Franck Bui-Huu and Rene Scharfe.
Documentation
--------------
Documentation by David Greaves, Junio C Hamano and the git-list <git@vger.kernel.org>.
GIT
---
Part of the gitlink:git[7] suite