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![Franck Bui-Huu](/assets/img/avatar_default.png)
Again, this is based on Rene Scharfe's earlier patch, but uses the archiver support introduced by the previous patch. Signed-off-by: Franck Bui-Huu <vagabon.xyz@gmail.com> Acked-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <junkio@cox.net>
230 lines
4.9 KiB
C
230 lines
4.9 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 <time.h>
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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 "commit.h"
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#include "tree-walk.h"
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#include "exec_cmd.h"
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#include "pkt-line.h"
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static const char archive_usage[] = \
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"git-archive --format=<fmt> [--prefix=<prefix>/] [<extra>] <tree-ish> [path...]";
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struct archiver archivers[] = {
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{ .name = "tar", .write_archive = write_tar_archive },
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{ .name = "zip", .write_archive = write_zip_archive },
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};
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static int run_remote_archiver(struct archiver *ar, int argc,
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const char **argv)
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{
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char *url, buf[1024];
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int fd[2], i, len, rv;
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pid_t pid;
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sprintf(buf, "git-upload-archive");
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url = xstrdup(ar->remote);
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pid = git_connect(fd, url, buf);
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if (pid < 0)
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return pid;
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for (i = 1; i < argc; i++) {
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if (!strncmp(argv[i], "--remote=", 9))
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continue;
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packet_write(fd[1], "argument %s\n", argv[i]);
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}
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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 && !strncmp(buf, "NACK ", 5))
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die("git-archive: NACK %s", buf + 5);
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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 = copy_fd(fd[0], 1);
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close(fd[0]);
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rv |= finish_connect(pid);
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return !!rv;
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}
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static int init_archiver(const char *name, struct archiver *ar)
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{
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int rv = -1, i;
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for (i = 0; i < ARRAY_SIZE(archivers); i++) {
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if (!strcmp(name, archivers[i].name)) {
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memcpy(ar, &archivers[i], sizeof(struct archiver));
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rv = 0;
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break;
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}
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}
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return rv;
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}
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void parse_pathspec_arg(const char **pathspec, struct archiver_args *ar_args)
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{
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ar_args->pathspec = get_pathspec(ar_args->base, pathspec);
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}
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void parse_treeish_arg(const char **argv, struct archiver_args *ar_args,
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const char *prefix)
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{
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const char *name = argv[0];
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const unsigned char *commit_sha1;
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time_t archive_time;
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struct tree *tree;
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struct commit *commit;
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unsigned char sha1[20];
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if (get_sha1(name, sha1))
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die("Not a valid object name");
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commit = lookup_commit_reference_gently(sha1, 1);
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if (commit) {
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commit_sha1 = commit->object.sha1;
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archive_time = commit->date;
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} else {
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commit_sha1 = NULL;
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archive_time = time(NULL);
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}
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tree = parse_tree_indirect(sha1);
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if (tree == NULL)
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die("not a tree object");
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if (prefix) {
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unsigned char tree_sha1[20];
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unsigned int mode;
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int err;
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err = get_tree_entry(tree->object.sha1, prefix,
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tree_sha1, &mode);
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if (err || !S_ISDIR(mode))
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die("current working directory is untracked");
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free(tree);
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tree = parse_tree_indirect(tree_sha1);
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}
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ar_args->tree = tree;
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ar_args->commit_sha1 = commit_sha1;
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ar_args->time = archive_time;
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}
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static const char *default_parse_extra(struct archiver *ar,
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const char **argv)
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{
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static char msg[64];
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snprintf(msg, sizeof(msg) - 4, "'%s' format does not handle %s",
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ar->name, *argv);
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return strcat(msg, "...");
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}
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int parse_archive_args(int argc, const char **argv, struct archiver *ar)
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{
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const char *extra_argv[MAX_EXTRA_ARGS];
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int extra_argc = 0;
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const char *format = NULL; /* might want to default to "tar" */
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const char *remote = NULL;
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const char *base = "";
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int list = 0;
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int i;
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for (i = 1; i < argc; i++) {
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const char *arg = argv[i];
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if (!strcmp(arg, "--list") || !strcmp(arg, "-l")) {
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list = 1;
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continue;
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}
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if (!strncmp(arg, "--format=", 9)) {
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format = arg + 9;
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continue;
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}
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if (!strncmp(arg, "--prefix=", 9)) {
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base = arg + 9;
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continue;
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}
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if (!strncmp(arg, "--remote=", 9)) {
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remote = arg + 9;
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continue;
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}
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if (!strcmp(arg, "--")) {
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i++;
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break;
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}
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if (arg[0] == '-') {
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if (extra_argc > MAX_EXTRA_ARGS - 1)
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die("Too many extra options");
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extra_argv[extra_argc++] = arg;
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continue;
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}
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break;
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}
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if (list) {
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if (!remote) {
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for (i = 0; i < ARRAY_SIZE(archivers); i++)
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printf("%s\n", archivers[i].name);
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exit(0);
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}
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die("--list and --remote are mutually exclusive");
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}
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if (argc - i < 1)
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usage(archive_usage);
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if (!format)
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die("You must specify an archive format");
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if (init_archiver(format, ar) < 0)
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die("Unknown archive format '%s'", format);
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if (extra_argc && !remote) {
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if (!ar->parse_extra) {
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die("%s", default_parse_extra(ar, extra_argv));
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}
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ar->args.extra = ar->parse_extra(extra_argc, extra_argv);
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}
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ar->remote = remote;
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ar->args.base = base;
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return i;
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}
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int cmd_archive(int argc, const char **argv, const char *prefix)
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{
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struct archiver ar;
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int tree_idx;
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tree_idx = parse_archive_args(argc, argv, &ar);
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if (ar.remote)
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return run_remote_archiver(&ar, argc, argv);
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if (prefix == NULL)
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prefix = setup_git_directory();
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argv += tree_idx;
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parse_treeish_arg(argv, &ar.args, prefix);
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parse_pathspec_arg(argv + 1, &ar.args);
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return ar.write_archive(&ar.args);
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}
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