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-rw-r--r--builtin-tar-tree.c103
1 files changed, 103 insertions, 0 deletions
diff --git a/builtin-tar-tree.c b/builtin-tar-tree.c
new file mode 100644
index 0000000000..3f1e7012db
--- /dev/null
+++ b/builtin-tar-tree.c
@@ -0,0 +1,103 @@
+/*
+ * Copyright (c) 2005, 2006 Rene Scharfe
+ */
+#include "cache.h"
+#include "commit.h"
+#include "tar.h"
+#include "builtin.h"
+#include "quote.h"
+
+static const char tar_tree_usage[] =
+"git tar-tree [--remote=<repo>] <tree-ish> [basedir]\n"
+"*** Note that this command is now deprecated; use \"git archive\" instead.";
+
+static const char builtin_get_tar_commit_id_usage[] =
+"git get-tar-commit-id < <tarfile>";
+
+int cmd_tar_tree(int argc, const char **argv, const char *prefix)
+{
+ /*
+ * "git tar-tree" is now a wrapper around "git archive --format=tar"
+ *
+ * $0 --remote=<repo> arg... ==>
+ * git archive --format=tar --remote=<repo> arg...
+ * $0 tree-ish ==>
+ * git archive --format=tar tree-ish
+ * $0 tree-ish basedir ==>
+ * git archive --format-tar --prefix=basedir tree-ish
+ */
+ int i;
+ const char **nargv = xcalloc(sizeof(*nargv), argc + 3);
+ char *basedir_arg;
+ int nargc = 0;
+
+ nargv[nargc++] = "archive";
+ nargv[nargc++] = "--format=tar";
+
+ if (2 <= argc && !prefixcmp(argv[1], "--remote=")) {
+ nargv[nargc++] = argv[1];
+ argv++;
+ argc--;
+ }
+
+ /*
+ * Because it's just a compatibility wrapper, tar-tree supports only
+ * the old behaviour of reading attributes from the work tree.
+ */
+ nargv[nargc++] = "--worktree-attributes";
+
+ switch (argc) {
+ default:
+ usage(tar_tree_usage);
+ break;
+ case 3:
+ /* base-path */
+ basedir_arg = xmalloc(strlen(argv[2]) + 11);
+ sprintf(basedir_arg, "--prefix=%s/", argv[2]);
+ nargv[nargc++] = basedir_arg;
+ /* fallthru */
+ case 2:
+ /* tree-ish */
+ nargv[nargc++] = argv[1];
+ }
+ nargv[nargc] = NULL;
+
+ fprintf(stderr,
+ "*** \"git tar-tree\" is now deprecated.\n"
+ "*** Running \"git archive\" instead.\n***");
+ for (i = 0; i < nargc; i++) {
+ fputc(' ', stderr);
+ sq_quote_print(stderr, nargv[i]);
+ }
+ fputc('\n', stderr);
+ return cmd_archive(nargc, nargv, prefix);
+}
+
+/* ustar header + extended global header content */
+#define RECORDSIZE (512)
+#define HEADERSIZE (2 * RECORDSIZE)
+
+int cmd_get_tar_commit_id(int argc, const char **argv, const char *prefix)
+{
+ char buffer[HEADERSIZE];
+ struct ustar_header *header = (struct ustar_header *)buffer;
+ char *content = buffer + RECORDSIZE;
+ ssize_t n;
+
+ if (argc != 1)
+ usage(builtin_get_tar_commit_id_usage);
+
+ n = read_in_full(0, buffer, HEADERSIZE);
+ if (n < HEADERSIZE)
+ die("git get-tar-commit-id: read error");
+ if (header->typeflag[0] != 'g')
+ return 1;
+ if (memcmp(content, "52 comment=", 11))
+ return 1;
+
+ n = write_in_full(1, content + 11, 41);
+ if (n < 41)
+ die_errno("git get-tar-commit-id: write error");
+
+ return 0;
+}