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git/perl/Git.xs
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

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/* By carefully stacking #includes here (even if WE don't really need them)
* we strive to make the thing actually compile. Git header files aren't very
* nice. Perl headers are one of the signs of the coming apocalypse. */
#include <ctype.h>
/* Ok, it hasn't been so bad so far. */
/* libgit interface */
#include "../cache.h"
#include "../exec_cmd.h"
/* XS and Perl interface */
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#include "ppport.h"
MODULE = Git PACKAGE = Git
PROTOTYPES: DISABLE
# /* TODO: xs_call_gate(). See Git.pm. */
const char *
xs_version()
CODE:
{
RETVAL = GIT_VERSION;
}
OUTPUT:
RETVAL
const char *
xs_exec_path()
CODE:
{
RETVAL = git_exec_path();
}
OUTPUT:
RETVAL
void
xs__execv_git_cmd(...)
CODE:
{
const char **argv;
int i;
argv = malloc(sizeof(const char *) * (items + 1));
if (!argv)
croak("malloc failed");
for (i = 0; i < items; i++)
argv[i] = strdup(SvPV_nolen(ST(i)));
argv[i] = NULL;
execv_git_cmd(argv);
for (i = 0; i < items; i++)
if (argv[i])
free((char *) argv[i]);
free((char **) argv);
}
char *
xs_hash_object(file, type = "blob")
SV *file;
char *type;
CODE:
{
unsigned char sha1[20];
if (SvTYPE(file) == SVt_RV)
file = SvRV(file);
if (SvTYPE(file) == SVt_PVGV) {
/* Filehandle */
PerlIO *pio;
pio = IoIFP(sv_2io(file));
if (!pio)
croak("You passed me something weird - a dir glob?");
/* XXX: I just hope PerlIO didn't read anything from it yet.
* --pasky */
if (index_pipe(sha1, PerlIO_fileno(pio), type, 0))
croak("Unable to hash given filehandle");
/* Avoid any nasty surprises. */
PerlIO_close(pio);
} else {
/* String */
char *path = SvPV_nolen(file);
int fd = open(path, O_RDONLY);
struct stat st;
if (fd < 0 ||
fstat(fd, &st) < 0 ||
index_fd(sha1, fd, &st, 0, type))
croak("Unable to hash %s", path);
close(fd);
}
RETVAL = sha1_to_hex(sha1);
}
OUTPUT:
RETVAL