merge(third_party/git): Merge squashed git subtree at v2.23.0 r/373

Merge commit '1b593e1ea4d2af0f6444d9a7788d5d99abd6fde5' as 'third_party/git'

1 files changed, 152 insertions, 0 deletions

diff --git a/third_party/git/builtin/commit-tree.c b/third_party/git/builtin/commit-tree.c
new file mode 100644
index 000000000000..b866d8395104
--- /dev/null
+++ b/third_party/git/builtin/commit-tree.c
@@ -0,0 +1,152 @@
+/*
+ * GIT - The information manager from hell
+ *
+ * Copyright (C) Linus Torvalds, 2005
+ */
+#include "cache.h"
+#include "config.h"
+#include "object-store.h"
+#include "repository.h"
+#include "commit.h"
+#include "tree.h"
+#include "builtin.h"
+#include "utf8.h"
+#include "gpg-interface.h"
+#include "parse-options.h"
+
+static const char * const commit_tree_usage[] = {
+	N_("git commit-tree [(-p <parent>)...] [-S[<keyid>]] [(-m <message>)...] "
+		"[(-F <file>)...] <tree>"),
+	NULL
+};
+
+static const char *sign_commit;
+
+static void new_parent(struct commit *parent, struct commit_list **parents_p)
+{
+	struct object_id *oid = &parent->object.oid;
+	struct commit_list *parents;
+	for (parents = *parents_p; parents; parents = parents->next) {
+		if (parents->item == parent) {
+			error(_("duplicate parent %s ignored"), oid_to_hex(oid));
+			return;
+		}
+		parents_p = &parents->next;
+	}
+	commit_list_insert(parent, parents_p);
+}
+
+static int commit_tree_config(const char *var, const char *value, void *cb)
+{
+	int status = git_gpg_config(var, value, NULL);
+	if (status)
+		return status;
+	return git_default_config(var, value, cb);
+}
+
+static int parse_parent_arg_callback(const struct option *opt,
+		const char *arg, int unset)
+{
+	struct object_id oid;
+	struct commit_list **parents = opt->value;
+
+	BUG_ON_OPT_NEG_NOARG(unset, arg);
+
+	if (get_oid_commit(arg, &oid))
+		die(_("not a valid object name %s"), arg);
+
+	assert_oid_type(&oid, OBJ_COMMIT);
+	new_parent(lookup_commit(the_repository, &oid), parents);
+	return 0;
+}
+
+static int parse_message_arg_callback(const struct option *opt,
+		const char *arg, int unset)
+{
+	struct strbuf *buf = opt->value;
+
+	BUG_ON_OPT_NEG_NOARG(unset, arg);
+
+	if (buf->len)
+		strbuf_addch(buf, '\n');
+	strbuf_addstr(buf, arg);
+	strbuf_complete_line(buf);
+
+	return 0;
+}
+
+static int parse_file_arg_callback(const struct option *opt,
+		const char *arg, int unset)
+{
+	int fd;
+	struct strbuf *buf = opt->value;
+
+	BUG_ON_OPT_NEG_NOARG(unset, arg);
+
+	if (buf->len)
+		strbuf_addch(buf, '\n');
+	if (!strcmp(arg, "-"))
+		fd = 0;
+	else {
+		fd = open(arg, O_RDONLY);
+		if (fd < 0)
+			die_errno(_("git commit-tree: failed to open '%s'"), arg);
+	}
+	if (strbuf_read(buf, fd, 0) < 0)
+		die_errno(_("git commit-tree: failed to read '%s'"), arg);
+	if (fd && close(fd))
+		die_errno(_("git commit-tree: failed to close '%s'"), arg);
+
+	return 0;
+}
+
+int cmd_commit_tree(int argc, const char **argv, const char *prefix)
+{
+	static struct strbuf buffer = STRBUF_INIT;
+	struct commit_list *parents = NULL;
+	struct object_id tree_oid;
+	struct object_id commit_oid;
+
+	struct option options[] = {
+		{ OPTION_CALLBACK, 'p', NULL, &parents, N_("parent"),
+			N_("id of a parent commit object"), PARSE_OPT_NONEG,
+			parse_parent_arg_callback },
+		{ OPTION_CALLBACK, 'm', NULL, &buffer, N_("message"),
+			N_("commit message"), PARSE_OPT_NONEG,
+			parse_message_arg_callback },
+		{ OPTION_CALLBACK, 'F', NULL, &buffer, N_("file"),
+			N_("read commit log message from file"), PARSE_OPT_NONEG,
+			parse_file_arg_callback },
+		{ OPTION_STRING, 'S', "gpg-sign", &sign_commit, N_("key-id"),
+			N_("GPG sign commit"), PARSE_OPT_OPTARG, NULL, (intptr_t) "" },
+		OPT_END()
+	};
+
+	git_config(commit_tree_config, NULL);
+
+	if (argc < 2 || !strcmp(argv[1], "-h"))
+		usage_with_options(commit_tree_usage, options);
+
+	argc = parse_options(argc, argv, prefix, options, commit_tree_usage, 0);
+
+	if (argc != 1)
+		die(_("must give exactly one tree"));
+
+	if (get_oid_tree(argv[0], &tree_oid))
+		die(_("not a valid object name %s"), argv[0]);
+
+	if (!buffer.len) {
+		if (strbuf_read(&buffer, 0, 0) < 0)
+			die_errno(_("git commit-tree: failed to read"));
+	}
+
+	if (commit_tree(buffer.buf, buffer.len, &tree_oid, parents, &commit_oid,
+			NULL, sign_commit)) {
+		strbuf_release(&buffer);
+		return 1;
+	}
+
+	printf("%s\n", oid_to_hex(&commit_oid));
+	strbuf_release(&buffer);
+	return 0;
+}