/* * Copyright (c) 2006 Franck Bui-Huu * Copyright (c) 2006 Rene Scharfe */ #include "cache.h" #include "builtin.h" #include "archive.h" #include "transport.h" #include "parse-options.h" #include "pkt-line.h" #include "sideband.h" static void create_output_file(const char *output_file) { int output_fd = open(output_file, O_CREAT | O_WRONLY | O_TRUNC, 0666); if (output_fd < 0) die_errno("could not create archive file '%s'", output_file); if (output_fd != 1) { if (dup2(output_fd, 1) < 0) die_errno("could not redirect output"); else close(output_fd); } } static int run_remote_archiver(int argc, const char **argv, const char *remote, const char *exec) { char buf[LARGE_PACKET_MAX]; int fd[2], i, len, rv; struct transport *transport; struct remote *_remote; _remote = remote_get(remote); if (!_remote->url[0]) die("git archive: Remote with no URL"); transport = transport_get(_remote, _remote->url[0]); transport_connect(transport, "git-upload-archive", exec, fd); for (i = 1; i < argc; i++) packet_write(fd[1], "argument %s\n", argv[i]); packet_flush(fd[1]); len = packet_read_line(fd[0], buf, sizeof(buf)); if (!len) die("git archive: expected ACK/NAK, got EOF"); if (buf[len-1] == '\n') buf[--len] = 0; if (strcmp(buf, "ACK")) { if (len > 5 && !prefixcmp(buf, "NACK ")) die("git archive: NACK %s", buf + 5); die("git archive: protocol error"); } len = packet_read_line(fd[0], buf, sizeof(buf)); if (len) die("git archive: expected a flush"); /* Now, start reading from fd[0] and spit it out to stdout */ rv = recv_sideband("archive", fd[0], 1); rv |= transport_disconnect(transport); return !!rv; } static const char *format_from_name(const char *filename) { const char *ext = strrchr(filename, '.'); if (!ext) return NULL; ext++; if (!strcasecmp(ext, "zip")) return "--format=zip"; return NULL; } #define PARSE_OPT_KEEP_ALL ( PARSE_OPT_KEEP_DASHDASH | \ PARSE_OPT_KEEP_ARGV0 | \ PARSE_OPT_KEEP_UNKNOWN | \ PARSE_OPT_NO_INTERNAL_HELP ) int cmd_archive(int argc, const char **argv, const char *prefix) { const char *exec = "git-upload-archive"; const char *output = NULL; const char *remote = NULL; const char *format_option = NULL; struct option local_opts[] = { OPT_STRING('o', "output", &output, "file", "write the archive to this file"), OPT_STRING(0, "remote", &remote, "repo", "retrieve the archive from remote repository <repo>"), OPT_STRING(0, "exec", &exec, "cmd", "path to the remote git-upload-archive command"), OPT_END() }; argc = parse_options(argc, argv, prefix, local_opts, NULL, PARSE_OPT_KEEP_ALL); if (output) { create_output_file(output); format_option = format_from_name(output); } /* * We have enough room in argv[] to muck it in place, because * --output must have been given on the original command line * if we get to this point, and parse_options() must have eaten * it, i.e. we can add back one element to the array. * * We add a fake --format option at the beginning, with the * format inferred from our output filename. This way explicit * --format options can override it, and the fake option is * inserted before any "--" that might have been given. */ if (format_option) { memmove(argv + 2, argv + 1, sizeof(*argv) * argc); argv[1] = format_option; argv[++argc] = NULL; } if (remote) return run_remote_archiver(argc, argv, remote, exec); setvbuf(stderr, NULL, _IOLBF, BUFSIZ); return write_archive(argc, argv, prefix, 1); }