git-tar-tree: Move code for git-archive --format=tar to archive-tar.c
[git/git.git] / builtin-upload-tar.c
CommitLineData
21754264
JH
1/*
2 * Copyright (c) 2006 Junio C Hamano
3 */
4#include "cache.h"
5#include "pkt-line.h"
6#include "exec_cmd.h"
7#include "builtin.h"
8
9static const char upload_tar_usage[] = "git-upload-tar <repo>";
10
11static int nak(const char *reason)
12{
13 packet_write(1, "NACK %s\n", reason);
14 packet_flush(1);
15 return 1;
16}
17
a633fca0 18int cmd_upload_tar(int argc, const char **argv, const char *prefix)
21754264
JH
19{
20 int len;
21 const char *dir = argv[1];
22 char buf[8192];
23 unsigned char sha1[20];
24 char *base = NULL;
25 char hex[41];
26 int ac;
27 const char *av[4];
28
29 if (argc != 2)
30 usage(upload_tar_usage);
31 if (strlen(dir) < sizeof(buf)-1)
32 strcpy(buf, dir); /* enter-repo smudges its argument */
33 else
34 packet_write(1, "NACK insanely long repository name %s\n", dir);
35 if (!enter_repo(buf, 0)) {
36 packet_write(1, "NACK not a git archive %s\n", dir);
37 packet_flush(1);
38 return 1;
39 }
40
41 len = packet_read_line(0, buf, sizeof(buf));
42 if (len < 5 || strncmp("want ", buf, 5))
43 return nak("expected want");
44 if (buf[len-1] == '\n')
45 buf[--len] = 0;
46 if (get_sha1(buf + 5, sha1))
47 return nak("expected sha1");
48 strcpy(hex, sha1_to_hex(sha1));
49
50 len = packet_read_line(0, buf, sizeof(buf));
51 if (len) {
52 if (len < 5 || strncmp("base ", buf, 5))
53 return nak("expected (optional) base");
54 if (buf[len-1] == '\n')
55 buf[--len] = 0;
9befac47 56 base = xstrdup(buf + 5);
21754264
JH
57 len = packet_read_line(0, buf, sizeof(buf));
58 }
59 if (len)
60 return nak("expected flush");
61
62 packet_write(1, "ACK\n");
63 packet_flush(1);
64
65 ac = 0;
66 av[ac++] = "tar-tree";
67 av[ac++] = hex;
68 if (base)
69 av[ac++] = base;
70 av[ac++] = NULL;
71 execv_git_cmd(av);
72 /* should it return that is an error */
73 return 1;
74}