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-rw-r--r--builtin/archive.c129
1 files changed, 129 insertions, 0 deletions
diff --git a/builtin/archive.c b/builtin/archive.c
new file mode 100644
index 0000000..b14eaba
--- /dev/null
+++ b/builtin/archive.c
@@ -0,0 +1,129 @@
+/*
+ * 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);
+}