Commit Graph

261 Commits

Author SHA1 Message Date
Petr Baudis
d595a473ee Git.pm: assorted build related fixes.
- We passed our own *.a archives as LIBS to the submake that runs
   in perl/; separate LIBS and EXTLIBS and pass the latter which
   tells what the system libraries are used.

 - The quoting of preprocesor symbol definitions passed down to
   perl/ submake was loose and we lost double quotes around
   include directives.  Use *_SQ to quote them properly.

 - The installation location of perl/ submake is not
   architecture neutral anymore, so use SITEARCH instead of
   SITELIB.

Signed-off-by: Petr Baudis <pasky@suse.cz>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-07-02 17:14:42 -07:00
Petr Baudis
d5c7721d58 Git.pm: Add support for subdirectories inside of working copies
This patch adds support for subdirectories inside of working copies;
you can specify them in the constructor either as the Directory
option (it will just get autodetected using rev-parse) or explicitly
using the WorkingSubdir option. This makes Git->repository() do the
exact same path setup and repository lookup as the Git porcelain
does.

This patch also introduces repo_path(), wc_path() and wc_subdir()
accessor methods and wc_chdir() mutator.

Signed-off-by: Petr Baudis <pasky@suse.cz>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-07-02 17:14:41 -07:00
Petr Baudis
d43ba46807 Git.pm: Implement options for the command interface
This gives the user a way to easily pass options to the command routines.
Currently only the STDERR option is implemented and can be used to adjust
what shall be done with error output of the called command (most usefully,
it can be used to silence it).

Signed-off-by: Petr Baudis <pasky@suse.cz>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-07-02 17:14:41 -07:00
Petr Baudis
d79850e1fd Git.pm: Enhance the command_pipe() mechanism
Rename command_pipe() to command_output_pipe(), outsource
the functionality to _command_common_pipe().

Add command_input_pipe().

Signed-off-by: Petr Baudis <pasky@suse.cz>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-07-02 17:14:41 -07:00
Petr Baudis
8b9150e3e3 Git.pm: Handle failed commands' output
Currently if an external command returns error exit code, a generic exception
is thrown and there is no chance for the caller to retrieve the command's
output.

This patch introduces a Git::Error::Command exception class which is thrown
in this case and contains both the error code and the captured command output.
You can use the new git_cmd_try statement to fatally catch the exception
while producing a user-friendly message.

It also adds command_close_pipe() for easier checking of exit status of
a command we have just a pipe handle of. It has partial forward dependency
on the next patch, but basically only in the area of documentation.

Signed-off-by: Petr Baudis <pasky@suse.cz>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-07-02 17:14:41 -07:00
Petr Baudis
97b16c0674 Git.pm: Better error handling
So far, errors just killed the whole program and in case of an error
inside of libgit it would be totally uncatchable. This patch makes
Git.pm throw standard Perl exceptions instead. In the future we might
subclass Error to Git::Error or something but for now Error::Simple
is more than enough.

Signed-off-by: Petr Baudis <pasky@suse.cz>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-07-02 17:14:40 -07:00
Petr Baudis
5c4082fd68 Add Error.pm to the distribution
I have been thinking about how to do the error reporting the best
way and after scraping various overcomplicated concepts, I have
decided that by far the most elegant way is to throw Error exceptions;
the closest sane alternative is to catch the dies in Git.pm by
enclosing the calls in eval{}s and that's really _quite_ ugly.

The only "small" trouble is that Error.pm turns out sadly not to be
part of the standard distribution, and installation from CPAN is
a bother, especially if you can't install it system-wide. But since
it is very small, I've decided to just bundle it.

Signed-off-by: Petr Baudis <pasky@suse.cz>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-07-02 17:14:40 -07:00
Petr Baudis
63df97ae7b Git.pm: Implement Git::version()
Git::version() returns the Git version string.

Signed-off-by: Petr Baudis <pasky@suse.cz>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-07-02 17:14:40 -07:00
Petr Baudis
8062f81c2d Git.pm: Call external commands using execv_git_cmd()
Instead of explicitly using the git wrapper to call external commands,
use the execv_git_cmd() function which will directly call whatever
needs to be called. GitBin option becomes useless so drop it.

This actually means the exec_path() thing I planned to use worthless
internally, but Jakub wants it in anyway and I don't mind, so...

Signed-off-by: Petr Baudis <pasky@suse.cz>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-07-02 17:14:40 -07:00
Petr Baudis
eca1f6fdb8 Git.pm: Implement Git::exec_path()
This patch implements Git::exec_path() (as a direct XS call).

Signed-off-by: Petr Baudis <pasky@suse.cz>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-07-02 17:14:40 -07:00
Petr Baudis
b1edc53d06 Introduce Git.pm (v4)
This patch introduces a very basic and barebone Git.pm module
with a sketch of how the generic interface would look like;
most functions are missing, but this should give some good base.
I will continue expanding it.

Most desirable now is more careful error reporting, generic_in() for feeding
input to Git commands and the repository() constructor doing some poking
with git-rev-parse to get the git directory and subdirectory prefix.
Those three are basically the prerequisities for converting git-mv.
I will send them as follow-ups to this patch.

Currently Git.pm just wraps up exec()s of Git commands, but even that
is not trivial to get right and various Git perl scripts do it in
various inconsistent ways. In addition to Git.pm, there is now also
Git.xs which provides barebone Git.xs for directly interfacing with
libgit.a, and as an example providing the hash_object() function using
libgit.

This adds the Git module, integrates it to the build system and as
an example converts the git-fmt-merge-msg.perl script to it (the result
is not very impressive since its advantage is not quite apparent in this
one, but I just picked up the simplest Git user around).

Compared to v3, only very minor things were fixed in this patch (some
whitespaces, a missing export, tiny bug in git-fmt-merge-msg.perl);
at first I wanted to post them as a separate patch but since this
is still only in pu, I decided that it will be cleaner to just resend
the patch.

My current working state is available all the time at

	http://pasky.or.cz/~xpasky/git-perl/Git.pm

and an irregularily updated API documentation is at

	http://pasky.or.cz/~xpasky/git-perl/Git.html

Many thanks to Jakub Narebski, Junio and others for their feedback.

Signed-off-by: Petr Baudis <pasky@suse.cz>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-07-02 17:14:40 -07:00