mirrors/git
0
0
Fork 0
mirror of https://github.com/git/git.git synced 2024-11-27 20:14:30 +08:00
Code Issues Packages Projects Releases Wiki Activity

git-send-pack: start parsing local/remote reference differences

Browse Source 
Right now it just shows which refs it picks up, and whether they are
the same or changed on the remote end. Getting there..
This commit is contained in:
Linus Torvalds 2005-06-29 22:31:41 -07:00
parent 1a3e71767c
commit e4b5c7fff4
1 changed files with 58 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

61
send-pack.c
View File

@ -5,18 +5,73 @@ static const char send_pack_usage[] = "git-send-pack [--exec=other] destination
static const char *exec = "git-receive-pack";
struct ref {
struct ref *next;
unsigned char old_sha1[20];
unsigned char new_sha1[20];
char name[0];
};
static struct ref *ref_list = NULL;
static int read_ref(const char *ref, unsigned char *sha1)
{
int fd, ret;
static char pathname[PATH_MAX];
char buffer[60];
const char *git_dir = gitenv(GIT_DIR_ENVIRONMENT) ? : DEFAULT_GIT_DIR_ENVIRONMENT;
snprintf(pathname, sizeof(pathname), "%s/%s", git_dir, ref);
fd = open(pathname, O_RDONLY);
if (fd < 0)
return -1;
ret = -1;
if (read(fd, buffer, sizeof(buffer)) >= 40)
ret = get_sha1_hex(buffer, sha1);
close(fd);
return ret;
}
static int send_pack(int in, int out)
{
for (;;) {
unsigned char old_sha1[20];
unsigned char new_sha1[20];
static char buffer[1000];
char *name;
struct ref *n;
int len;
len = packet_read_line(in, buffer, sizeof(buffer));
if (len > 0) {
write(2, buffer, len);
if (!len)
break;
if (buffer[len-1] == '\n')
buffer[--len] = 0;
if (len < 42 || get_sha1_hex(buffer, old_sha1) || buffer[40] != ' ')
die("protocol error: expected sha/ref, got '%s'", buffer);
name = buffer + 41;
if (read_ref(name, new_sha1) < 0) {
fprintf(stderr, "no such local reference '%s'\n", name);
continue;
}
break;
if (!has_sha1_file(old_sha1)) {
fprintf(stderr, "remote '%s' points to object I don't have\n", name);
continue;
}
if (!memcmp(old_sha1, new_sha1, 20)) {
fprintf(stderr, "'%s' unchanged\n", name);
} else {
char new_hex[60];
strcpy(new_hex, sha1_to_hex(new_sha1));
fprintf(stderr, "%s: updating from %s to %s\n", name, sha1_to_hex(old_sha1), new_hex);
}
n = xmalloc(sizeof(*n) + len - 40);
memcpy(n->old_sha1, old_sha1, 20);
memcpy(n->new_sha1, new_sha1, 20);
memcpy(n->name, buffer + 41, len - 40);
n->next = ref_list;
ref_list = n;
}
packet_flush(out);
close(out);