Andrew's git - gitweb.git/blob

   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
  11static 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
  72static 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
 110int 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}