Merge branch 'rs/cherry'

* rs/cherry: Make git-cherry handle root trees Built-in cherry
author: Junio C Hamano <junkio@cox.net> 2006-11-01 09:17:37 -0800
committer: Junio C Hamano <junkio@cox.net> 2006-11-01 09:17:37 -0800
commit: 56532fa147d56057ad4121f5ccea8e254748afdd (patch)
tree: f5536ca0d7ba9ca232ea606ebc6f501d396a4b98
parent: e0d68cd5d95fc15342db38c211f71efe5bcfbe94 (diff)
parent: 2b60356da5369dd60ab26eabaa91d95b6badf209 (diff)
download: git-56532fa147d56057ad4121f5ccea8e254748afdd.tar.gz
git-56532fa147d56057ad4121f5ccea8e254748afdd.tar.xz
7 files changed, 139 insertions, 26 deletions
diff --git a/Makefile b/Makefile
index 40e2a680f..1cc9f586d 100644
--- a/Makefile
+++ b/Makefile
@@ -159,7 +159,7 @@ BASIC_LDFLAGS =
 
 SCRIPT_SH = \
 	git-bisect.sh git-checkout.sh \
-	git-cherry.sh git-clean.sh git-clone.sh git-commit.sh \
+	git-clean.sh git-clone.sh git-commit.sh \
 	git-fetch.sh \
 	git-ls-remote.sh \
 	git-merge-one-file.sh git-parse-remote.sh \
@@ -212,7 +212,7 @@ PROGRAMS = \
 EXTRA_PROGRAMS =
 
 BUILT_INS = \
-	git-format-patch$X git-show$X git-whatchanged$X \
+	git-format-patch$X git-show$X git-whatchanged$X git-cherry$X \
 	git-get-tar-commit-id$X \
 	$(patsubst builtin-%.o,git-%$X,$(BUILTIN_OBJS))
 
diff --git a/builtin-log.c b/builtin-log.c
index 9d1ceae44..fedb0137b 100644
--- a/builtin-log.c
+++ b/builtin-log.c
@@ -171,8 +171,11 @@ static void reopen_stdout(struct commit *commit, int nr, int keep_subject)
 static int get_patch_id(struct commit *commit, struct diff_options *options,
 		unsigned char *sha1)
 {
-	diff_tree_sha1(commit->parents->item->object.sha1, commit->object.sha1,
-			"", options);
+	if (commit->parents)
+		diff_tree_sha1(commit->parents->item->object.sha1,
+		               commit->object.sha1, "", options);
+	else
+		diff_root_tree_sha1(commit->object.sha1, "", options);
 	diffcore_std(options);
 	return diff_flush_patch_id(options, sha1);
 }
@@ -437,3 +440,109 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
 	return 0;
 }
 
+static int add_pending_commit(const char *arg, struct rev_info *revs, int flags)
+{
+	unsigned char sha1[20];
+	if (get_sha1(arg, sha1) == 0) {
+		struct commit *commit = lookup_commit_reference(sha1);
+		if (commit) {
+			commit->object.flags |= flags;
+			add_pending_object(revs, &commit->object, arg);
+			return 0;
+		}
+	}
+	return -1;
+}
+
+static const char cherry_usage[] =
+"git-cherry [-v] <upstream> [<head>] [<limit>]";
+int cmd_cherry(int argc, const char **argv, const char *prefix)
+{
+	struct rev_info revs;
+	struct diff_options patch_id_opts;
+	struct commit *commit;
+	struct commit_list *list = NULL;
+	const char *upstream;
+	const char *head = "HEAD";
+	const char *limit = NULL;
+	int verbose = 0;
+
+	if (argc > 1 && !strcmp(argv[1], "-v")) {
+		verbose = 1;
+		argc--;
+		argv++;
+	}
+
+	switch (argc) {
+	case 4:
+		limit = argv[3];
+		/* FALLTHROUGH */
+	case 3:
+		head = argv[2];
+		/* FALLTHROUGH */
+	case 2:
+		upstream = argv[1];
+		break;
+	default:
+		usage(cherry_usage);
+	}
+
+	init_revisions(&revs, prefix);
+	revs.diff = 1;
+	revs.combine_merges = 0;
+	revs.ignore_merges = 1;
+	revs.diffopt.recursive = 1;
+
+	if (add_pending_commit(head, &revs, 0))
+		die("Unknown commit %s", head);
+	if (add_pending_commit(upstream, &revs, UNINTERESTING))
+		die("Unknown commit %s", upstream);
+
+	/* Don't say anything if head and upstream are the same. */
+	if (revs.pending.nr == 2) {
+		struct object_array_entry *o = revs.pending.objects;
+		if (hashcmp(o[0].item->sha1, o[1].item->sha1) == 0)
+			return 0;
+	}
+
+	get_patch_ids(&revs, &patch_id_opts, prefix);
+
+	if (limit && add_pending_commit(limit, &revs, UNINTERESTING))
+		die("Unknown commit %s", limit);
+
+	/* reverse the list of commits */
+	prepare_revision_walk(&revs);
+	while ((commit = get_revision(&revs)) != NULL) {
+		/* ignore merges */
+		if (commit->parents && commit->parents->next)
+			continue;
+
+		commit_list_insert(commit, &list);
+	}
+
+	while (list) {
+		unsigned char sha1[20];
+		char sign = '+';
+
+		commit = list->item;
+		if (!get_patch_id(commit, &patch_id_opts, sha1) &&
+		    lookup_object(sha1))
+			sign = '-';
+
+		if (verbose) {
+			static char buf[16384];
+			pretty_print_commit(CMIT_FMT_ONELINE, commit, ~0,
+			                    buf, sizeof(buf), 0, NULL, NULL, 0);
+			printf("%c %s %s\n", sign,
+			       sha1_to_hex(commit->object.sha1), buf);
+		}
+		else {
+			printf("%c %s\n", sign,
+			       sha1_to_hex(commit->object.sha1));
+		}
+
+		list = list->next;
+	}
+
+	return 0;
+}
diff --git a/builtin.h b/builtin.h
index f7150aa6b..a9b28ed89 100644
--- a/builtin.h
+++ b/builtin.h
@@ -21,6 +21,7 @@ extern int cmd_branch(int argc, const char **argv, const char *prefix);
 extern int cmd_cat_file(int argc, const char **argv, const char *prefix);
 extern int cmd_checkout_index(int argc, const char **argv, const char *prefix);
 extern int cmd_check_ref_format(int argc, const char **argv, const char *prefix);
+extern int cmd_cherry(int argc, const char **argv, const char *prefix);
 extern int cmd_commit_tree(int argc, const char **argv, const char *prefix);
 extern int cmd_count_objects(int argc, const char **argv, const char *prefix);
 extern int cmd_diff_files(int argc, const char **argv, const char *prefix);
diff --git a/diff.h b/diff.h
index ce3058e43..ac7b21c46 100644
--- a/diff.h
+++ b/diff.h
@@ -102,6 +102,8 @@ extern int diff_tree(struct tree_desc *t1, struct tree_desc *t2,
 		     const char *base, struct diff_options *opt);
 extern int diff_tree_sha1(const unsigned char *old, const unsigned char *new,
 			  const char *base, struct diff_options *opt);
+extern int diff_root_tree_sha1(const unsigned char *new, const char *base,
+                               struct diff_options *opt);
 
 struct combine_diff_path {
 	struct combine_diff_path *next;
diff --git a/git.c b/git.c
index af181d93b..d6c2d2db6 100644
--- a/git.c
+++ b/git.c
@@ -226,6 +226,7 @@ static void handle_internal_command(int argc, const char **argv, char **envp)
 		{ "cat-file", cmd_cat_file, RUN_SETUP },
 		{ "checkout-index", cmd_checkout_index, RUN_SETUP },
 		{ "check-ref-format", cmd_check_ref_format },
+		{ "cherry", cmd_cherry, RUN_SETUP },
 		{ "commit-tree", cmd_commit_tree, RUN_SETUP },
 		{ "count-objects", cmd_count_objects, RUN_SETUP },
 		{ "diff", cmd_diff, RUN_SETUP | USE_PAGER },
diff --git a/log-tree.c b/log-tree.c
index fbe139920..8787df5cc 100644
--- a/log-tree.c
+++ b/log-tree.c
@@ -252,26 +252,6 @@ int log_tree_diff_flush(struct rev_info *opt)
 	return 1;
 }
 
-static int diff_root_tree(struct rev_info *opt,
-			  const unsigned char *new, const char *base)
-{
-	int retval;
-	void *tree;
-	struct tree_desc empty, real;
-
-	tree = read_object_with_reference(new, tree_type, &real.size, NULL);
-	if (!tree)
-		die("unable to read root tree (%s)", sha1_to_hex(new));
-	real.buf = tree;
-
-	empty.buf = "";
-	empty.size = 0;
-	retval = diff_tree(&empty, &real, base, &opt->diffopt);
-	free(tree);
-	log_tree_diff_flush(opt);
-	return retval;
-}
-
 static int do_diff_combined(struct rev_info *opt, struct commit *commit)
 {
 	unsigned const char *sha1 = commit->object.sha1;
@@ -297,8 +277,10 @@ static int log_tree_diff(struct rev_info *opt, struct commit *commit, struct log
 	/* Root commit? */
 	parents = commit->parents;
 	if (!parents) {
-		if (opt->show_root_diff)
-			diff_root_tree(opt, sha1, "");
+		if (opt->show_root_diff) {
+			diff_root_tree_sha1(sha1, "", &opt->diffopt);
+			log_tree_diff_flush(opt);
+		}
 		return !opt->loginfo;
 	}
 
diff --git a/tree-diff.c b/tree-diff.c
index 7e2f4f088..37d235e06 100644
--- a/tree-diff.c
+++ b/tree-diff.c
@@ -215,6 +215,24 @@ int diff_tree_sha1(const unsigned char *old, const unsigned char *new, const cha
 	return retval;
 }
 
+int diff_root_tree_sha1(const unsigned char *new, const char *base, struct diff_options *opt)
+{
+	int retval;
+	void *tree;
+	struct tree_desc empty, real;
+
+	tree = read_object_with_reference(new, tree_type, &real.size, NULL);
+	if (!tree)
+		die("unable to read root tree (%s)", sha1_to_hex(new));
+	real.buf = tree;
+
+	empty.size = 0;
+	empty.buf = "";
+	retval = diff_tree(&empty, &real, base, opt);
+	free(tree);
+	return retval;
+}
+
 static int count_paths(const char **paths)
 {
 	int i = 0;
author	Junio C Hamano <junkio@cox.net>	2006-11-01 09:17:37 -0800
committer	Junio C Hamano <junkio@cox.net>	2006-11-01 09:17:37 -0800
commit	56532fa147d56057ad4121f5ccea8e254748afdd (patch)
tree	f5536ca0d7ba9ca232ea606ebc6f501d396a4b98
parent	e0d68cd5d95fc15342db38c211f71efe5bcfbe94 (diff)
parent	2b60356da5369dd60ab26eabaa91d95b6badf209 (diff)
download	git-56532fa147d56057ad4121f5ccea8e254748afdd.tar.gz git-56532fa147d56057ad4121f5ccea8e254748afdd.tar.xz