mirror of
https://github.com/git/git.git
synced 2024-11-19 02:33:55 +01:00
7950571ad7
This adds '-e' option to git-cat-file, to test for the existence of the object. This also cleans up the option-parsing in git-cat-file slightly. [jc: HPA version had -n option which did rev-parse --verify; the real value of this patch is the option parsing cleanup.] Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Junio C Hamano <junkio@cox.net>
74 lines
1.3 KiB
C
74 lines
1.3 KiB
C
/*
|
|
* GIT - The information manager from hell
|
|
*
|
|
* Copyright (C) Linus Torvalds, 2005
|
|
*/
|
|
#include "cache.h"
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
unsigned char sha1[20];
|
|
char type[20];
|
|
void *buf;
|
|
unsigned long size;
|
|
int opt;
|
|
|
|
setup_git_directory();
|
|
if (argc != 3 || get_sha1(argv[2], sha1))
|
|
usage("git-cat-file [-t|-s|-e|<type>] <sha1>");
|
|
|
|
opt = 0;
|
|
if ( argv[1][0] == '-' ) {
|
|
opt = argv[1][1];
|
|
if ( !opt || argv[1][2] )
|
|
opt = -1; /* Not a single character option */
|
|
}
|
|
|
|
buf = NULL;
|
|
switch (opt) {
|
|
case 't':
|
|
if (!sha1_object_info(sha1, type, NULL)) {
|
|
printf("%s\n", type);
|
|
return 0;
|
|
}
|
|
break;
|
|
|
|
case 's':
|
|
if (!sha1_object_info(sha1, type, &size)) {
|
|
printf("%lu\n", size);
|
|
return 0;
|
|
}
|
|
break;
|
|
|
|
case 'e':
|
|
return !has_sha1_file(sha1);
|
|
|
|
case 0:
|
|
buf = read_object_with_reference(sha1, argv[1], &size, NULL);
|
|
break;
|
|
|
|
default:
|
|
die("git-cat-file: unknown option: %s\n", argv[1]);
|
|
}
|
|
|
|
if (!buf)
|
|
die("git-cat-file %s: bad file", argv[2]);
|
|
|
|
while (size > 0) {
|
|
long ret = write(1, buf, size);
|
|
if (ret < 0) {
|
|
if (errno == EAGAIN)
|
|
continue;
|
|
/* Ignore epipe */
|
|
if (errno == EPIPE)
|
|
break;
|
|
die("git-cat-file: %s", strerror(errno));
|
|
} else if (!ret) {
|
|
die("git-cat-file: disk full?");
|
|
}
|
|
size -= ret;
|
|
buf += ret;
|
|
}
|
|
return 0;
|
|
}
|