mirror of
https://github.com/git/git.git
synced 2024-06-02 17:36:09 +02:00
3c249c9506
This allows the programs to use various simplified versions of the SHA1 names, eg just say "HEAD" for the SHA1 pointed to by the .git/HEAD file etc. For example, this commit has been done with git-commit-tree $(git-write-tree) -p HEAD instead of the traditional "$(cat .git/HEAD)" syntax.
35 lines
682 B
C
35 lines
682 B
C
#include "cache.h"
|
|
|
|
static char *create_temp_file(unsigned char *sha1)
|
|
{
|
|
static char path[50];
|
|
void *buf;
|
|
char type[100];
|
|
unsigned long size;
|
|
int fd;
|
|
|
|
buf = read_sha1_file(sha1, type, &size);
|
|
if (!buf || strcmp(type, "blob"))
|
|
die("unable to read blob object %s", sha1_to_hex(sha1));
|
|
|
|
strcpy(path, ".merge_file_XXXXXX");
|
|
fd = mkstemp(path);
|
|
if (fd < 0)
|
|
die("unable to create temp-file");
|
|
if (write(fd, buf, size) != size)
|
|
die("unable to write temp-file");
|
|
close(fd);
|
|
return path;
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
unsigned char sha1[20];
|
|
|
|
if (argc != 2 || get_sha1(argv[1], sha1))
|
|
usage("unpack-file.c <sha1>");
|
|
|
|
puts(create_temp_file(sha1));
|
|
return 0;
|
|
}
|