Merge branch 'maint'
[git] / builtin-archive.c
1 /*
2  * Copyright (c) 2006 Franck Bui-Huu
3  * Copyright (c) 2006 Rene Scharfe
4  */
5 #include "cache.h"
6 #include "builtin.h"
7 #include "archive.h"
8 #include "pkt-line.h"
9 #include "sideband.h"
10
11 static int run_remote_archiver(const char *remote, int argc,
12                                const char **argv)
13 {
14         char *url, buf[LARGE_PACKET_MAX];
15         int fd[2], i, len, rv;
16         struct child_process *conn;
17         const char *exec = "git-upload-archive";
18         int exec_at = 0, exec_value_at = 0;
19
20         for (i = 1; i < argc; i++) {
21                 const char *arg = argv[i];
22                 if (!prefixcmp(arg, "--exec=")) {
23                         if (exec_at)
24                                 die("multiple --exec specified");
25                         exec = arg + 7;
26                         exec_at = i;
27                 } else if (!strcmp(arg, "--exec")) {
28                         if (exec_at)
29                                 die("multiple --exec specified");
30                         if (i + 1 >= argc)
31                                 die("option --exec requires a value");
32                         exec = argv[i + 1];
33                         exec_at = i;
34                         exec_value_at = ++i;
35                 }
36         }
37
38         url = xstrdup(remote);
39         conn = git_connect(fd, url, exec, 0);
40
41         for (i = 1; i < argc; i++) {
42                 if (i == exec_at || i == exec_value_at)
43                         continue;
44                 packet_write(fd[1], "argument %s\n", argv[i]);
45         }
46         packet_flush(fd[1]);
47
48         len = packet_read_line(fd[0], buf, sizeof(buf));
49         if (!len)
50                 die("git-archive: expected ACK/NAK, got EOF");
51         if (buf[len-1] == '\n')
52                 buf[--len] = 0;
53         if (strcmp(buf, "ACK")) {
54                 if (len > 5 && !prefixcmp(buf, "NACK "))
55                         die("git-archive: NACK %s", buf + 5);
56                 die("git-archive: protocol error");
57         }
58
59         len = packet_read_line(fd[0], buf, sizeof(buf));
60         if (len)
61                 die("git-archive: expected a flush");
62
63         /* Now, start reading from fd[0] and spit it out to stdout */
64         rv = recv_sideband("archive", fd[0], 1, 2);
65         close(fd[0]);
66         close(fd[1]);
67         rv |= finish_connect(conn);
68
69         return !!rv;
70 }
71
72 static const char *extract_remote_arg(int *ac, const char **av)
73 {
74         int ix, iy, cnt = *ac;
75         int no_more_options = 0;
76         const char *remote = NULL;
77
78         for (ix = iy = 1; ix < cnt; ix++) {
79                 const char *arg = av[ix];
80                 if (!strcmp(arg, "--"))
81                         no_more_options = 1;
82                 if (!no_more_options) {
83                         if (!prefixcmp(arg, "--remote=")) {
84                                 if (remote)
85                                         die("Multiple --remote specified");
86                                 remote = arg + 9;
87                                 continue;
88                         } else if (!strcmp(arg, "--remote")) {
89                                 if (remote)
90                                         die("Multiple --remote specified");
91                                 if (++ix >= cnt)
92                                         die("option --remote requires a value");
93                                 remote = av[ix];
94                                 continue;
95                         }
96                         if (arg[0] != '-')
97                                 no_more_options = 1;
98                 }
99                 if (ix != iy)
100                         av[iy] = arg;
101                 iy++;
102         }
103         if (remote) {
104                 av[--cnt] = NULL;
105                 *ac = cnt;
106         }
107         return remote;
108 }
109
110 int cmd_archive(int argc, const char **argv, const char *prefix)
111 {
112         const char *remote = NULL;
113
114         remote = extract_remote_arg(&argc, argv);
115         if (remote)
116                 return run_remote_archiver(remote, argc, argv);
117
118         setvbuf(stderr, NULL, _IOLBF, BUFSIZ);
119
120         return write_archive(argc, argv, prefix, 1);
121 }