X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=rev-list.c;h=c60aa72957cb65501266911aefd8aaaa2f2e4e16;hb=5f93926c3c5c4fe1def39de82076bc69ec89c058;hp=16920ef69e844697628ca3775403f86cc1c13945;hpb=5e749e259b39a74b31f6c768588b4e628e3802cb;p=git.git

diff --git a/rev-list.c b/rev-list.c
index 16920ef6..c60aa729 100644
--- a/rev-list.c
+++ b/rev-list.c
@@ -1,26 +1,40 @@
 #include "cache.h"
+#include "refs.h"
+#include "tag.h"
 #include "commit.h"
+#include "tree.h"
+#include "blob.h"
 #include "epoch.h"
 
 #define SEEN		(1u << 0)
 #define INTERESTING	(1u << 1)
 #define COUNTED		(1u << 2)
-#define SHOWN		(LAST_EPOCH_FLAG << 2)
+#define SHOWN		(1u << 3)
 
 static const char rev_list_usage[] =
-	"usage: git-rev-list [OPTION] commit-id <commit-id>\n"
+	"git-rev-list [OPTION] commit-id <commit-id>\n"
 		      "  --max-count=nr\n"
 		      "  --max-age=epoch\n"
 		      "  --min-age=epoch\n"
+		      "  --parents\n"
+		      "  --bisect\n"
+		      "  --objects\n"
+		      "  --unpacked\n"
 		      "  --header\n"
 		      "  --pretty\n"
-		      "  --merge-order [ --show-breaks ]";
+		      "  --no-merges\n"
+		      "  --merge-order [ --show-breaks ]\n"
+		      "  --topo-order";
 
+static int unpacked = 0;
 static int bisect_list = 0;
+static int tag_objects = 0;
+static int tree_objects = 0;
+static int blob_objects = 0;
 static int verbose_header = 0;
 static int show_parents = 0;
 static int hdr_termination = 0;
-static const char *prefix = "";
+static const char *commit_prefix = "";
 static unsigned long max_age = -1;
 static unsigned long min_age = -1;
 static int max_count = -1;
@@ -28,19 +42,21 @@ static enum cmit_fmt commit_format = CMIT_FMT_RAW;
 static int merge_order = 0;
 static int show_breaks = 0;
 static int stop_traversal = 0;
+static int topo_order = 0;
+static int no_merges = 0;
 
 static void show_commit(struct commit *commit)
 {
 	commit->object.flags |= SHOWN;
 	if (show_breaks) {
-		prefix = "| ";
+		commit_prefix = "| ";
 		if (commit->object.flags & DISCONTINUITY) {
-			prefix = "^ ";     
+			commit_prefix = "^ ";     
 		} else if (commit->object.flags & BOUNDARY) {
-			prefix = "= ";
+			commit_prefix = "= ";
 		} 
         }        		
-	printf("%s%s", prefix, sha1_to_hex(commit->object.sha1));
+	printf("%s%s", commit_prefix, sha1_to_hex(commit->object.sha1));
 	if (show_parents) {
 		struct commit_list *parents = commit->parents;
 		while (parents) {
@@ -48,32 +64,35 @@ static void show_commit(struct commit *commit)
 			parents = parents->next;
 		}
 	}
-	putchar('\n');
+	if (commit_format == CMIT_FMT_ONELINE)
+		putchar(' ');
+	else
+		putchar('\n');
+
 	if (verbose_header) {
 		static char pretty_header[16384];
 		pretty_print_commit(commit_format, commit->buffer, ~0, pretty_header, sizeof(pretty_header));
 		printf("%s%c", pretty_header, hdr_termination);
-	}	
+	}
+	fflush(stdout);
 }
 
 static int filter_commit(struct commit * commit)
 {
-	if (merge_order && stop_traversal && commit->object.flags & BOUNDARY)
+	if (stop_traversal && (commit->object.flags & BOUNDARY))
 		return STOP;
 	if (commit->object.flags & (UNINTERESTING|SHOWN))
 		return CONTINUE;
 	if (min_age != -1 && (commit->date > min_age))
 		return CONTINUE;
 	if (max_age != -1 && (commit->date < max_age)) {
-		if (!merge_order)
-			return STOP;
-		else {
-			stop_traversal = 1;
-			return CONTINUE;
-		}
+		stop_traversal=1;
+		return CONTINUE;
 	}
 	if (max_count != -1 && !max_count--)
 		return STOP;
+	if (no_merges && (commit->parents && commit->parents->next))
+		return CONTINUE;
 	return DO;
 }
 
@@ -94,14 +113,137 @@ static int process_commit(struct commit * commit)
 	return CONTINUE;
 }
 
+static struct object_list **add_object(struct object *obj, struct object_list **p, const char *name)
+{
+	struct object_list *entry = xmalloc(sizeof(*entry));
+	entry->item = obj;
+	entry->next = *p;
+	entry->name = name;
+	*p = entry;
+	return &entry->next;
+}
+
+static struct object_list **process_blob(struct blob *blob, struct object_list **p, const char *name)
+{
+	struct object *obj = &blob->object;
+
+	if (!blob_objects)
+		return p;
+	if (obj->flags & (UNINTERESTING | SEEN))
+		return p;
+	obj->flags |= SEEN;
+	return add_object(obj, p, name);
+}
+
+static struct object_list **process_tree(struct tree *tree, struct object_list **p, const char *name)
+{
+	struct object *obj = &tree->object;
+	struct tree_entry_list *entry;
+
+	if (!tree_objects)
+		return p;
+	if (obj->flags & (UNINTERESTING | SEEN))
+		return p;
+	if (parse_tree(tree) < 0)
+		die("bad tree object %s", sha1_to_hex(obj->sha1));
+	obj->flags |= SEEN;
+	p = add_object(obj, p, name);
+	entry = tree->entries;
+	tree->entries = NULL;
+	while (entry) {
+		struct tree_entry_list *next = entry->next;
+		if (entry->directory)
+			p = process_tree(entry->item.tree, p, entry->name);
+		else
+			p = process_blob(entry->item.blob, p, entry->name);
+		free(entry);
+		entry = next;
+	}
+	return p;
+}
+
+static struct object_list *pending_objects = NULL;
+
 static void show_commit_list(struct commit_list *list)
 {
+	struct object_list *objects = NULL, **p = &objects, *pending;
 	while (list) {
 		struct commit *commit = pop_most_recent_commit(&list, SEEN);
 
+		p = process_tree(commit->tree, p, "");
 		if (process_commit(commit) == STOP)
 			break;
 	}
+	for (pending = pending_objects; pending; pending = pending->next) {
+		struct object *obj = pending->item;
+		const char *name = pending->name;
+		if (obj->flags & (UNINTERESTING | SEEN))
+			continue;
+		if (obj->type == tag_type) {
+			obj->flags |= SEEN;
+			p = add_object(obj, p, name);
+			continue;
+		}
+		if (obj->type == tree_type) {
+			p = process_tree((struct tree *)obj, p, name);
+			continue;
+		}
+		if (obj->type == blob_type) {
+			p = process_blob((struct blob *)obj, p, name);
+			continue;
+		}
+		die("unknown pending object %s (%s)", sha1_to_hex(obj->sha1), name);
+	}
+	while (objects) {
+		/* An object with name "foo\n0000000000000000000000000000000000000000"
+		 * can be used confuse downstream git-pack-objects very badly.
+		 */
+		const char *ep = strchr(objects->name, '\n');
+		if (ep) {
+			printf("%s %.*s\n", sha1_to_hex(objects->item->sha1),
+			       (int) (ep - objects->name),
+			       objects->name);
+		}
+		else
+			printf("%s %s\n", sha1_to_hex(objects->item->sha1), objects->name);
+		objects = objects->next;
+	}
+}
+
+static void mark_blob_uninteresting(struct blob *blob)
+{
+	if (!blob_objects)
+		return;
+	if (blob->object.flags & UNINTERESTING)
+		return;
+	blob->object.flags |= UNINTERESTING;
+}
+
+static void mark_tree_uninteresting(struct tree *tree)
+{
+	struct object *obj = &tree->object;
+	struct tree_entry_list *entry;
+
+	if (!tree_objects)
+		return;
+	if (obj->flags & UNINTERESTING)
+		return;
+	obj->flags |= UNINTERESTING;
+	if (!has_sha1_file(obj->sha1))
+		return;
+	if (parse_tree(tree) < 0)
+		die("bad tree %s", sha1_to_hex(obj->sha1));
+	entry = tree->entries;
+	tree->entries = NULL;
+	while (entry) {
+		struct tree_entry_list *next = entry->next;
+		if (entry->directory)
+			mark_tree_uninteresting(entry->item.tree);
+		else
+			mark_blob_uninteresting(entry->item.blob);
+		free(entry);
+		entry = next;
+	}
 }
 
 static void mark_parents_uninteresting(struct commit *commit)
@@ -111,12 +253,35 @@ static void mark_parents_uninteresting(struct commit *commit)
 	while (parents) {
 		struct commit *commit = parents->item;
 		commit->object.flags |= UNINTERESTING;
+
+		/*
+		 * Normally we haven't parsed the parent
+		 * yet, so we won't have a parent of a parent
+		 * here. However, it may turn out that we've
+		 * reached this commit some other way (where it
+		 * wasn't uninteresting), in which case we need
+		 * to mark its parents recursively too..
+		 */
+		if (commit->parents)
+			mark_parents_uninteresting(commit);
+
+		/*
+		 * A missing commit is ok iff its parent is marked 
+		 * uninteresting.
+		 *
+		 * We just mark such a thing parsed, so that when
+		 * it is popped next time around, we won't be trying
+		 * to parse it and get an error.
+		 */
+		if (!has_sha1_file(commit->object.sha1))
+			commit->object.parsed = 1;
 		parents = parents->next;
 	}
 }
 
-static int everybody_uninteresting(struct commit_list *list)
+static int everybody_uninteresting(struct commit_list *orig)
 {
+	struct commit_list *list = orig;
 	while (list) {
 		struct commit *commit = list->item;
 		list = list->next;
@@ -199,50 +364,159 @@ static struct commit_list *find_bisection(struct commit_list *list)
 	return best;
 }
 
-struct commit_list *limit_list(struct commit_list *list)
+static void mark_edges_uninteresting(struct commit_list *list)
+{
+	for ( ; list; list = list->next) {
+		struct commit_list *parents = list->item->parents;
+
+		for ( ; parents; parents = parents->next) {
+			struct commit *commit = parents->item;
+			if (commit->object.flags & UNINTERESTING)
+				mark_tree_uninteresting(commit->tree);
+		}
+	}
+}
+
+static struct commit_list *limit_list(struct commit_list *list)
 {
 	struct commit_list *newlist = NULL;
 	struct commit_list **p = &newlist;
-	do {
+	while (list) {
 		struct commit *commit = pop_most_recent_commit(&list, SEEN);
 		struct object *obj = &commit->object;
 
+		if (max_age != -1 && (commit->date < max_age))
+			obj->flags |= UNINTERESTING;
+		if (unpacked && has_sha1_pack(obj->sha1))
+			obj->flags |= UNINTERESTING;
 		if (obj->flags & UNINTERESTING) {
 			mark_parents_uninteresting(commit);
 			if (everybody_uninteresting(list))
 				break;
 			continue;
 		}
+		if (min_age != -1 && (commit->date > min_age))
+			continue;
 		p = &commit_list_insert(commit, p)->next;
-	} while (list);
+	}
+	if (tree_objects)
+		mark_edges_uninteresting(newlist);
 	if (bisect_list)
 		newlist = find_bisection(newlist);
 	return newlist;
 }
 
-static enum cmit_fmt get_commit_format(const char *arg)
+static void add_pending_object(struct object *obj, const char *name)
+{
+	add_object(obj, &pending_objects, name);
+}
+
+static struct commit *get_commit_reference(const char *name, unsigned int flags)
+{
+	unsigned char sha1[20];
+	struct object *object;
+
+	if (get_sha1(name, sha1))
+		usage(rev_list_usage);
+	object = parse_object(sha1);
+	if (!object)
+		die("bad object %s", name);
+
+	/*
+	 * Tag object? Look what it points to..
+	 */
+	while (object->type == tag_type) {
+		struct tag *tag = (struct tag *) object;
+		object->flags |= flags;
+		if (tag_objects && !(object->flags & UNINTERESTING))
+			add_pending_object(object, tag->tag);
+		object = parse_object(tag->tagged->sha1);
+		if (!object)
+			die("bad object %s", sha1_to_hex(tag->tagged->sha1));
+	}
+
+	/*
+	 * Commit object? Just return it, we'll do all the complex
+	 * reachability crud.
+	 */
+	if (object->type == commit_type) {
+		struct commit *commit = (struct commit *)object;
+		object->flags |= flags;
+		if (parse_commit(commit) < 0)
+			die("unable to parse commit %s", name);
+		if (flags & UNINTERESTING)
+			mark_parents_uninteresting(commit);
+		return commit;
+	}
+
+	/*
+	 * Tree object? Either mark it uniniteresting, or add it
+	 * to the list of objects to look at later..
+	 */
+	if (object->type == tree_type) {
+		struct tree *tree = (struct tree *)object;
+		if (!tree_objects)
+			return NULL;
+		if (flags & UNINTERESTING) {
+			mark_tree_uninteresting(tree);
+			return NULL;
+		}
+		add_pending_object(object, "");
+		return NULL;
+	}
+
+	/*
+	 * Blob object? You know the drill by now..
+	 */
+	if (object->type == blob_type) {
+		struct blob *blob = (struct blob *)object;
+		if (!blob_objects)
+			return NULL;
+		if (flags & UNINTERESTING) {
+			mark_blob_uninteresting(blob);
+			return NULL;
+		}
+		add_pending_object(object, "");
+		return NULL;
+	}
+	die("%s is unknown object", name);
+}
+
+static void handle_one_commit(struct commit *com, struct commit_list **lst)
+{
+	if (!com || com->object.flags & SEEN)
+		return;
+	com->object.flags |= SEEN;
+	commit_list_insert(com, lst);
+}
+
+/* for_each_ref() callback does not allow user data -- Yuck. */
+static struct commit_list **global_lst;
+
+static int include_one_commit(const char *path, const unsigned char *sha1)
 {
-	if (!*arg)
-		return CMIT_FMT_DEFAULT;
-	if (!strcmp(arg, "=raw"))
-		return CMIT_FMT_RAW;
-	if (!strcmp(arg, "=medium"))
-		return CMIT_FMT_MEDIUM;
-	if (!strcmp(arg, "=short"))
-		return CMIT_FMT_SHORT;
-	usage(rev_list_usage);	
-}			
+	struct commit *com = get_commit_reference(path, 0);
+	handle_one_commit(com, global_lst);
+	return 0;
+}
 
+static void handle_all(struct commit_list **lst)
+{
+	global_lst = lst;
+	for_each_ref(include_one_commit);
+	global_lst = NULL;
+}
 
 int main(int argc, char **argv)
 {
 	struct commit_list *list = NULL;
 	int i, limited = 0;
 
+	setup_git_directory();
 	for (i = 1 ; i < argc; i++) {
 		int flags;
 		char *arg = argv[i];
-		unsigned char sha1[20];
+		char *dotdot;
 		struct commit *commit;
 
 		if (!strncmp(arg, "--max-count=", 12)) {
@@ -251,10 +525,12 @@ int main(int argc, char **argv)
 		}
 		if (!strncmp(arg, "--max-age=", 10)) {
 			max_age = atoi(arg + 10);
+			limited = 1;
 			continue;
 		}
 		if (!strncmp(arg, "--min-age=", 10)) {
 			min_age = atoi(arg + 10);
+			limited = 1;
 			continue;
 		}
 		if (!strcmp(arg, "--header")) {
@@ -265,7 +541,14 @@ int main(int argc, char **argv)
 			commit_format = get_commit_format(arg+8);
 			verbose_header = 1;
 			hdr_termination = '\n';
-			prefix = "commit ";
+			if (commit_format == CMIT_FMT_ONELINE)
+				commit_prefix = "";
+			else
+				commit_prefix = "commit ";
+			continue;
+		}
+		if (!strncmp(arg, "--no-merges", 11)) {
+			no_merges = 1;
 			continue;
 		}
 		if (!strcmp(arg, "--parents")) {
@@ -276,41 +559,84 @@ int main(int argc, char **argv)
 			bisect_list = 1;
 			continue;
 		}
-		if (!strncmp(arg, "--merge-order", 13)) {
+		if (!strcmp(arg, "--all")) {
+			handle_all(&list);
+			continue;
+		}
+		if (!strcmp(arg, "--objects")) {
+			tag_objects = 1;
+			tree_objects = 1;
+			blob_objects = 1;
+			continue;
+		}
+		if (!strcmp(arg, "--unpacked")) {
+			unpacked = 1;
+			limited = 1;
+			continue;
+		}
+		if (!strcmp(arg, "--merge-order")) {
 		        merge_order = 1;
 			continue;
 		}
-		if (!strncmp(arg, "--show-breaks", 13)) {
+		if (!strcmp(arg, "--show-breaks")) {
 			show_breaks = 1;
 			continue;
 		}
+		if (!strcmp(arg, "--topo-order")) {
+		        topo_order = 1;
+		        limited = 1;
+			continue;
+		}
+
+		if (show_breaks && !merge_order)
+			usage(rev_list_usage);
 
 		flags = 0;
+		dotdot = strstr(arg, "..");
+		if (dotdot) {
+			char *next = dotdot + 2;
+			struct commit *exclude = NULL;
+			struct commit *include = NULL;
+			*dotdot = 0;
+			if (!*next)
+				next = "HEAD";
+			exclude = get_commit_reference(arg, UNINTERESTING);
+			include = get_commit_reference(next, 0);
+			if (exclude && include) {
+				limited = 1;
+				handle_one_commit(exclude, &list);
+				handle_one_commit(include, &list);
+				continue;
+			}
+			*dotdot = '.';
+		}
 		if (*arg == '^') {
 			flags = UNINTERESTING;
 			arg++;
 			limited = 1;
 		}
-		if (get_sha1(arg, sha1) || (show_breaks && !merge_order))
-			usage(rev_list_usage);
-		commit = lookup_commit_reference(sha1);
-		if (!commit || parse_commit(commit) < 0)
-			die("bad commit object %s", arg);
-		commit->object.flags |= flags;
-		commit_list_insert(commit, &list);
+		commit = get_commit_reference(arg, flags);
+		handle_one_commit(commit, &list);
 	}
 
-	if (!list)
-		usage(rev_list_usage);
+	save_commit_buffer = verbose_header;
+	track_object_refs = 0;
 
 	if (!merge_order) {		
+		sort_by_date(&list);
 	        if (limited)
 			list = limit_list(list);
+		if (topo_order)
+			sort_in_topological_order(&list);
 		show_commit_list(list);
 	} else {
+#ifndef NO_OPENSSL
 		if (sort_list_in_merge_order(list, &process_commit)) {
-			  die("merge order sort failed\n");
+			die("merge order sort failed\n");
 		}
+#else
+		die("merge order sort unsupported, OpenSSL not linked");
+#endif
 	}
 
 	return 0;