mirror of
https://github.com/git/git.git
synced 2024-12-15 12:53:36 +08:00
113 lines
3.1 KiB
C
113 lines
3.1 KiB
C
/*
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* Copyright (c) 2006 Franck Bui-Huu
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* Copyright (c) 2006 Rene Scharfe
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*/
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#include "cache.h"
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#include "builtin.h"
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#include "archive.h"
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#include "transport.h"
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#include "parse-options.h"
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#include "pkt-line.h"
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#include "sideband.h"
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static void create_output_file(const char *output_file)
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{
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int output_fd = open(output_file, O_CREAT | O_WRONLY | O_TRUNC, 0666);
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if (output_fd < 0)
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die_errno(_("could not create archive file '%s'"), output_file);
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if (output_fd != 1) {
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if (dup2(output_fd, 1) < 0)
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die_errno(_("could not redirect output"));
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else
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close(output_fd);
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}
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}
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static int run_remote_archiver(int argc, const char **argv,
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const char *remote, const char *exec,
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const char *name_hint)
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{
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char buf[LARGE_PACKET_MAX];
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int fd[2], i, len, rv;
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struct transport *transport;
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struct remote *_remote;
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_remote = remote_get(remote);
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if (!_remote->url[0])
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die(_("git archive: Remote with no URL"));
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transport = transport_get(_remote, _remote->url[0]);
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transport_connect(transport, "git-upload-archive", exec, fd);
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/*
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* Inject a fake --format field at the beginning of the
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* arguments, with the format inferred from our output
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* filename. This way explicit --format options can override
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* it.
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*/
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if (name_hint) {
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const char *format = archive_format_from_filename(name_hint);
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if (format)
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packet_write(fd[1], "argument --format=%s\n", format);
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}
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for (i = 1; i < argc; i++)
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packet_write(fd[1], "argument %s\n", argv[i]);
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packet_flush(fd[1]);
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len = packet_read_line(fd[0], buf, sizeof(buf));
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if (!len)
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die(_("git archive: expected ACK/NAK, got EOF"));
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if (buf[len-1] == '\n')
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buf[--len] = 0;
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if (strcmp(buf, "ACK")) {
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if (len > 5 && !prefixcmp(buf, "NACK "))
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die(_("git archive: NACK %s"), buf + 5);
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if (len > 4 && !prefixcmp(buf, "ERR "))
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die(_("remote error: %s"), buf + 4);
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die(_("git archive: protocol error"));
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}
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len = packet_read_line(fd[0], buf, sizeof(buf));
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if (len)
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die(_("git archive: expected a flush"));
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/* Now, start reading from fd[0] and spit it out to stdout */
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rv = recv_sideband("archive", fd[0], 1);
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rv |= transport_disconnect(transport);
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return !!rv;
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}
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#define PARSE_OPT_KEEP_ALL ( PARSE_OPT_KEEP_DASHDASH | \
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PARSE_OPT_KEEP_ARGV0 | \
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PARSE_OPT_KEEP_UNKNOWN | \
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PARSE_OPT_NO_INTERNAL_HELP )
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int cmd_archive(int argc, const char **argv, const char *prefix)
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{
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const char *exec = "git-upload-archive";
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const char *output = NULL;
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const char *remote = NULL;
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struct option local_opts[] = {
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OPT_STRING('o', "output", &output, "file",
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"write the archive to this file"),
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OPT_STRING(0, "remote", &remote, "repo",
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"retrieve the archive from remote repository <repo>"),
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OPT_STRING(0, "exec", &exec, "cmd",
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"path to the remote git-upload-archive command"),
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OPT_END()
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};
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argc = parse_options(argc, argv, prefix, local_opts, NULL,
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PARSE_OPT_KEEP_ALL);
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if (output)
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create_output_file(output);
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if (remote)
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return run_remote_archiver(argc, argv, remote, exec, output);
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setvbuf(stderr, NULL, _IOLBF, BUFSIZ);
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return write_archive(argc, argv, prefix, 1, output, 0);
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}
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