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e1327023ea
The main interface to the low-level grep code is grep_buffer, which takes a pointer to a buffer and a size. This is convenient and flexible (we use it to grep commit bodies, files on disk, and blobs by sha1), but it makes it hard to pass extra information about what we are grepping (either for correctness, like overriding binary auto-detection, or for optimizations, like lazily loading blob contents). Instead, let's encapsulate the idea of a "grep source", including the buffer, its size, and where the data is coming from. This is similar to the diff_filespec structure used by the diff code (unsurprising, since future patches will implement some of the same optimizations found there). The diffstat is slightly scarier than the actual patch content. Most of the modified lines are simply replacing access to raw variables with their counterparts that are now in a "struct grep_source". Most of the added lines were taken from builtin/grep.c, which partially abstracted the idea of grep sources (for file vs sha1 sources). Instead of dropping the now-redundant code, this patch leaves builtin/grep.c using the traditional grep_buffer interface (which now wraps the grep_source interface). That makes it easy to test that there is no change of behavior (yet). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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GIT - the stupid content tracker
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"git" can mean anything, depending on your mood.
- random three-letter combination that is pronounceable, and not
actually used by any common UNIX command. The fact that it is a
mispronunciation of "get" may or may not be relevant.
- stupid. contemptible and despicable. simple. Take your pick from the
dictionary of slang.
- "global information tracker": you're in a good mood, and it actually
works for you. Angels sing, and a light suddenly fills the room.
- "goddamn idiotic truckload of sh*t": when it breaks
Git is a fast, scalable, distributed revision control system with an
unusually rich command set that provides both high-level operations
and full access to internals.
Git is an Open Source project covered by the GNU General Public License.
It was originally written by Linus Torvalds with help of a group of
hackers around the net. It is currently maintained by Junio C Hamano.
Please read the file INSTALL for installation instructions.
See Documentation/gittutorial.txt to get started, then see
Documentation/everyday.txt for a useful minimum set of commands, and
Documentation/git-commandname.txt for documentation of each command.
If git has been correctly installed, then the tutorial can also be
read with "man gittutorial" or "git help tutorial", and the
documentation of each command with "man git-commandname" or "git help
commandname".
CVS users may also want to read Documentation/gitcvs-migration.txt
("man gitcvs-migration" or "git help cvs-migration" if git is
installed).
Many Git online resources are accessible from http://git-scm.com/
including full documentation and Git related tools.
The user discussion and development of Git take place on the Git
mailing list -- everyone is welcome to post bug reports, feature
requests, comments and patches to git@vger.kernel.org. To subscribe
to the list, send an email with just "subscribe git" in the body to
majordomo@vger.kernel.org. The mailing list archives are available at
http://marc.theaimsgroup.com/?l=git and other archival sites.
The messages titled "A note from the maintainer", "What's in
git.git (stable)" and "What's cooking in git.git (topics)" and
the discussion following them on the mailing list give a good
reference for project status, development direction and
remaining tasks.