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Slow but steady progress on git pack receive/send

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This commit is contained in:
Linus Torvalds 2005-06-29 22:50:48 -07:00
parent e4b5c7fff4
commit 7f8e982834
2 changed files with 42 additions and 27 deletions
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2
receive-pack.c
View File

@ -203,7 +203,9 @@ int main(int argc, char **argv)
packet_flush(1);
read_head_info();
if (commands) {
unpack();
execute_commands();
}
return 0;
}

63
send-pack.c
View File

@ -1,5 +1,6 @@
#include "cache.h"
#include "pkt-line.h"
#include <sys/wait.h>
static const char send_pack_usage[] = "git-send-pack [--exec=other] destination [heads]*";
@ -12,7 +13,7 @@ struct ref {
char name[0];
};
static struct ref *ref_list = NULL;
static struct ref *ref_list = NULL, **last_ref = &ref_list;
static int read_ref(const char *ref, unsigned char *sha1)
{
@ -34,12 +35,13 @@ static int read_ref(const char *ref, unsigned char *sha1)
static int send_pack(int in, int out)
{
struct ref *ref;
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));
@ -51,28 +53,31 @@ static int send_pack(int in, int out)
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;
}
if (!has_sha1_file(old_sha1)) {
fprintf(stderr, "remote '%s' points to object I don't have\n", name);
continue;
}
if (read_ref(name, new_sha1) < 0)
return error("no such local reference '%s'", name);
if (!has_sha1_file(old_sha1))
return error("remote '%s' points to object I don't have", name);
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);
continue;
}
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;
ref = xmalloc(sizeof(*ref) + len - 40);
memcpy(ref->old_sha1, old_sha1, 20);
memcpy(ref->new_sha1, new_sha1, 20);
memcpy(ref->name, buffer + 41, len - 40);
ref->next = NULL;
*last_ref = ref;
last_ref = &ref->next;
}
for (ref = ref_list; ref; ref = ref->next) {
char old_hex[60], *new_hex;
strcpy(old_hex, sha1_to_hex(ref->old_sha1));
new_hex = sha1_to_hex(ref->new_sha1);
packet_write(out, "%s %s %s", old_hex, new_hex, ref->name);
fprintf(stderr, "'%s': updating from %s to %s\n", ref->name, old_hex, new_hex);
}
packet_flush(out);
close(out);
return 0;
@ -113,6 +118,7 @@ static int setup_connection(int fd[2], char *url, char **heads)
const char *host, *path;
char *colon;
int pipefd[2][2];
pid_t pid;
url = shell_safe(url);
host = NULL;
@ -126,7 +132,8 @@ static int setup_connection(int fd[2], char *url, char **heads)
snprintf(command, sizeof(command), "%s %s", exec, path);
if (pipe(pipefd[0]) < 0 || pipe(pipefd[1]) < 0)
die("unable to create pipe pair for communication");
if (!fork()) {
pid = fork();
if (!pid) {
dup2(pipefd[1][0], 0);
dup2(pipefd[0][1], 1);
close(pipefd[0][0]);
@ -143,7 +150,7 @@ static int setup_connection(int fd[2], char *url, char **heads)
fd[1] = pipefd[1][1];
close(pipefd[0][1]);
close(pipefd[1][0]);
return 0;
return pid;
}
int main(int argc, char **argv)
@ -151,7 +158,8 @@ int main(int argc, char **argv)
int i, nr_heads = 0;
char *dest = NULL;
char **heads = NULL;
int fd[2];
int fd[2], ret;
pid_t pid;
argv++;
for (i = 1; i < argc; i++) {
@ -171,7 +179,12 @@ int main(int argc, char **argv)
}
if (!dest)
usage(send_pack_usage);
if (setup_connection(fd, dest, heads))
pid = setup_connection(fd, dest, heads);
if (pid < 0)
return 1;
return send_pack(fd[0], fd[1]);
ret = send_pack(fd[0], fd[1]);
close(fd[0]);
close(fd[1]);
waitpid(pid, NULL, 0);
return ret;
}