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-rw-r--r--Makefile1
-rw-r--r--builtin-prune.c195
-rw-r--r--reachable.c199
-rw-r--r--reachable.h6
4 files changed, 208 insertions, 193 deletions
diff --git a/Makefile b/Makefile
index 180e1e0b94..d8bfb6b878 100644
--- a/Makefile
+++ b/Makefile
@@ -251,6 +251,7 @@ LIB_OBJS = \
interpolate.o \
lockfile.o \
object.o pack-check.o patch-delta.o path.o pkt-line.o sideband.o \
+ reachable.o \
quote.o read-cache.o refs.o run-command.o dir.o object-refs.o \
server-info.o setup.o sha1_file.o sha1_name.o strbuf.o \
tag.o tree.o usage.o config.o environment.o ctype.o copy.o \
diff --git a/builtin-prune.c b/builtin-prune.c
index cd079b419c..6f0ba0d04d 100644
--- a/builtin-prune.c
+++ b/builtin-prune.c
@@ -1,14 +1,9 @@
#include "cache.h"
-#include "refs.h"
-#include "tag.h"
#include "commit.h"
-#include "tree.h"
-#include "blob.h"
-#include "tree-walk.h"
#include "diff.h"
#include "revision.h"
#include "builtin.h"
-#include "cache-tree.h"
+#include "reachable.h"
static const char prune_usage[] = "git-prune [-n]";
static int show_only;
@@ -84,168 +79,6 @@ static void prune_object_dir(const char *path)
}
}
-static void process_blob(struct blob *blob,
- struct object_array *p,
- struct name_path *path,
- const char *name)
-{
- struct object *obj = &blob->object;
-
- if (obj->flags & SEEN)
- return;
- obj->flags |= SEEN;
- /* Nothing to do, really .. The blob lookup was the important part */
-}
-
-static void process_tree(struct tree *tree,
- struct object_array *p,
- struct name_path *path,
- const char *name)
-{
- struct object *obj = &tree->object;
- struct tree_desc desc;
- struct name_entry entry;
- struct name_path me;
-
- if (obj->flags & SEEN)
- return;
- obj->flags |= SEEN;
- if (parse_tree(tree) < 0)
- die("bad tree object %s", sha1_to_hex(obj->sha1));
- name = xstrdup(name);
- add_object(obj, p, path, name);
- me.up = path;
- me.elem = name;
- me.elem_len = strlen(name);
-
- desc.buf = tree->buffer;
- desc.size = tree->size;
-
- while (tree_entry(&desc, &entry)) {
- if (S_ISDIR(entry.mode))
- process_tree(lookup_tree(entry.sha1), p, &me, entry.path);
- else
- process_blob(lookup_blob(entry.sha1), p, &me, entry.path);
- }
- free(tree->buffer);
- tree->buffer = NULL;
-}
-
-static void process_tag(struct tag *tag, struct object_array *p, const char *name)
-{
- struct object *obj = &tag->object;
- struct name_path me;
-
- if (obj->flags & SEEN)
- return;
- obj->flags |= SEEN;
-
- me.up = NULL;
- me.elem = "tag:/";
- me.elem_len = 5;
-
- if (parse_tag(tag) < 0)
- die("bad tag object %s", sha1_to_hex(obj->sha1));
- add_object(tag->tagged, p, NULL, name);
-}
-
-static void walk_commit_list(struct rev_info *revs)
-{
- int i;
- struct commit *commit;
- struct object_array objects = { 0, 0, NULL };
-
- /* Walk all commits, process their trees */
- while ((commit = get_revision(revs)) != NULL)
- process_tree(commit->tree, &objects, NULL, "");
-
- /* Then walk all the pending objects, recursively processing them too */
- for (i = 0; i < revs->pending.nr; i++) {
- struct object_array_entry *pending = revs->pending.objects + i;
- struct object *obj = pending->item;
- const char *name = pending->name;
- if (obj->type == OBJ_TAG) {
- process_tag((struct tag *) obj, &objects, name);
- continue;
- }
- if (obj->type == OBJ_TREE) {
- process_tree((struct tree *)obj, &objects, NULL, name);
- continue;
- }
- if (obj->type == OBJ_BLOB) {
- process_blob((struct blob *)obj, &objects, NULL, name);
- continue;
- }
- die("unknown pending object %s (%s)", sha1_to_hex(obj->sha1), name);
- }
-}
-
-static int add_one_reflog_ent(unsigned char *osha1, unsigned char *nsha1, char *datail, void *cb_data)
-{
- struct object *object;
- struct rev_info *revs = (struct rev_info *)cb_data;
-
- object = parse_object(osha1);
- if (object)
- add_pending_object(revs, object, "");
- object = parse_object(nsha1);
- if (object)
- add_pending_object(revs, object, "");
- return 0;
-}
-
-static int add_one_ref(const char *path, const unsigned char *sha1, int flag, void *cb_data)
-{
- struct object *object = parse_object(sha1);
- struct rev_info *revs = (struct rev_info *)cb_data;
-
- if (!object)
- die("bad object ref: %s:%s", path, sha1_to_hex(sha1));
- add_pending_object(revs, object, "");
-
- return 0;
-}
-
-static int add_one_reflog(const char *path, const unsigned char *sha1, int flag, void *cb_data)
-{
- for_each_reflog_ent(path, add_one_reflog_ent, cb_data);
- return 0;
-}
-
-static void add_one_tree(const unsigned char *sha1, struct rev_info *revs)
-{
- struct tree *tree = lookup_tree(sha1);
- add_pending_object(revs, &tree->object, "");
-}
-
-static void add_cache_tree(struct cache_tree *it, struct rev_info *revs)
-{
- int i;
-
- if (it->entry_count >= 0)
- add_one_tree(it->sha1, revs);
- for (i = 0; i < it->subtree_nr; i++)
- add_cache_tree(it->down[i]->cache_tree, revs);
-}
-
-static void add_cache_refs(struct rev_info *revs)
-{
- int i;
-
- read_cache();
- for (i = 0; i < active_nr; i++) {
- lookup_blob(active_cache[i]->sha1);
- /*
- * We could add the blobs to the pending list, but quite
- * frankly, we don't care. Once we've looked them up, and
- * added them as objects, we've really done everything
- * there is to do for a blob
- */
- }
- if (active_cache_tree)
- add_cache_tree(active_cache_tree, revs);
-}
-
int cmd_prune(int argc, const char **argv, const char *prefix)
{
int i;
@@ -261,32 +94,8 @@ int cmd_prune(int argc, const char **argv, const char *prefix)
}
save_commit_buffer = 0;
-
- /*
- * Set up revision parsing, and mark us as being interested
- * in all object types, not just commits.
- */
init_revisions(&revs, prefix);
- revs.tag_objects = 1;
- revs.blob_objects = 1;
- revs.tree_objects = 1;
-
- /* Add all external refs */
- for_each_ref(add_one_ref, &revs);
-
- /* Add all refs from the index file */
- add_cache_refs(&revs);
-
- /* Add all reflog info from refs */
- for_each_ref(add_one_reflog, &revs);
-
- /*
- * Set up the revision walk - this will move all commits
- * from the pending list to the commit walking list.
- */
- prepare_revision_walk(&revs);
-
- walk_commit_list(&revs);
+ mark_reachable_objects(&revs, 1);
prune_object_dir(get_object_directory());
diff --git a/reachable.c b/reachable.c
new file mode 100644
index 0000000000..4dfee1dbe8
--- /dev/null
+++ b/reachable.c
@@ -0,0 +1,199 @@
+#include "cache.h"
+#include "refs.h"
+#include "tag.h"
+#include "commit.h"
+#include "blob.h"
+#include "diff.h"
+#include "revision.h"
+#include "reachable.h"
+#include "cache-tree.h"
+
+static void process_blob(struct blob *blob,
+ struct object_array *p,
+ struct name_path *path,
+ const char *name)
+{
+ struct object *obj = &blob->object;
+
+ if (obj->flags & SEEN)
+ return;
+ obj->flags |= SEEN;
+ /* Nothing to do, really .. The blob lookup was the important part */
+}
+
+static void process_tree(struct tree *tree,
+ struct object_array *p,
+ struct name_path *path,
+ const char *name)
+{
+ struct object *obj = &tree->object;
+ struct tree_desc desc;
+ struct name_entry entry;
+ struct name_path me;
+
+ if (obj->flags & SEEN)
+ return;
+ obj->flags |= SEEN;
+ if (parse_tree(tree) < 0)
+ die("bad tree object %s", sha1_to_hex(obj->sha1));
+ name = xstrdup(name);
+ add_object(obj, p, path, name);
+ me.up = path;
+ me.elem = name;
+ me.elem_len = strlen(name);
+
+ desc.buf = tree->buffer;
+ desc.size = tree->size;
+
+ while (tree_entry(&desc, &entry)) {
+ if (S_ISDIR(entry.mode))
+ process_tree(lookup_tree(entry.sha1), p, &me, entry.path);
+ else
+ process_blob(lookup_blob(entry.sha1), p, &me, entry.path);
+ }
+ free(tree->buffer);
+ tree->buffer = NULL;
+}
+
+static void process_tag(struct tag *tag, struct object_array *p, const char *name)
+{
+ struct object *obj = &tag->object;
+ struct name_path me;
+
+ if (obj->flags & SEEN)
+ return;
+ obj->flags |= SEEN;
+
+ me.up = NULL;
+ me.elem = "tag:/";
+ me.elem_len = 5;
+
+ if (parse_tag(tag) < 0)
+ die("bad tag object %s", sha1_to_hex(obj->sha1));
+ add_object(tag->tagged, p, NULL, name);
+}
+
+static void walk_commit_list(struct rev_info *revs)
+{
+ int i;
+ struct commit *commit;
+ struct object_array objects = { 0, 0, NULL };
+
+ /* Walk all commits, process their trees */
+ while ((commit = get_revision(revs)) != NULL)
+ process_tree(commit->tree, &objects, NULL, "");
+
+ /* Then walk all the pending objects, recursively processing them too */
+ for (i = 0; i < revs->pending.nr; i++) {
+ struct object_array_entry *pending = revs->pending.objects + i;
+ struct object *obj = pending->item;
+ const char *name = pending->name;
+ if (obj->type == OBJ_TAG) {
+ process_tag((struct tag *) obj, &objects, name);
+ continue;
+ }
+ if (obj->type == OBJ_TREE) {
+ process_tree((struct tree *)obj, &objects, NULL, name);
+ continue;
+ }
+ if (obj->type == OBJ_BLOB) {
+ process_blob((struct blob *)obj, &objects, NULL, name);
+ continue;
+ }
+ die("unknown pending object %s (%s)", sha1_to_hex(obj->sha1), name);
+ }
+}
+
+static int add_one_reflog_ent(unsigned char *osha1, unsigned char *nsha1, char *datail, void *cb_data)
+{
+ struct object *object;
+ struct rev_info *revs = (struct rev_info *)cb_data;
+
+ object = parse_object(osha1);
+ if (object)
+ add_pending_object(revs, object, "");
+ object = parse_object(nsha1);
+ if (object)
+ add_pending_object(revs, object, "");
+ return 0;
+}
+
+static int add_one_ref(const char *path, const unsigned char *sha1, int flag, void *cb_data)
+{
+ struct object *object = parse_object(sha1);
+ struct rev_info *revs = (struct rev_info *)cb_data;
+
+ if (!object)
+ die("bad object ref: %s:%s", path, sha1_to_hex(sha1));
+ add_pending_object(revs, object, "");
+
+ return 0;
+}
+
+static int add_one_reflog(const char *path, const unsigned char *sha1, int flag, void *cb_data)
+{
+ for_each_reflog_ent(path, add_one_reflog_ent, cb_data);
+ return 0;
+}
+
+static void add_one_tree(const unsigned char *sha1, struct rev_info *revs)
+{
+ struct tree *tree = lookup_tree(sha1);
+ add_pending_object(revs, &tree->object, "");
+}
+
+static void add_cache_tree(struct cache_tree *it, struct rev_info *revs)
+{
+ int i;
+
+ if (it->entry_count >= 0)
+ add_one_tree(it->sha1, revs);
+ for (i = 0; i < it->subtree_nr; i++)
+ add_cache_tree(it->down[i]->cache_tree, revs);
+}
+
+static void add_cache_refs(struct rev_info *revs)
+{
+ int i;
+
+ read_cache();
+ for (i = 0; i < active_nr; i++) {
+ lookup_blob(active_cache[i]->sha1);
+ /*
+ * We could add the blobs to the pending list, but quite
+ * frankly, we don't care. Once we've looked them up, and
+ * added them as objects, we've really done everything
+ * there is to do for a blob
+ */
+ }
+ if (active_cache_tree)
+ add_cache_tree(active_cache_tree, revs);
+}
+
+void mark_reachable_objects(struct rev_info *revs, int mark_reflog)
+{
+ /*
+ * Set up revision parsing, and mark us as being interested
+ * in all object types, not just commits.
+ */
+ revs->tag_objects = 1;
+ revs->blob_objects = 1;
+ revs->tree_objects = 1;
+
+ /* Add all refs from the index file */
+ add_cache_refs(revs);
+
+ /* Add all external refs */
+ for_each_ref(add_one_ref, revs);
+
+ /* Add all reflog info from refs */
+ if (mark_reflog)
+ for_each_ref(add_one_reflog, revs);
+
+ /*
+ * Set up the revision walk - this will move all commits
+ * from the pending list to the commit walking list.
+ */
+ prepare_revision_walk(revs);
+ walk_commit_list(revs);
+}
diff --git a/reachable.h b/reachable.h
new file mode 100644
index 0000000000..40751810b6
--- /dev/null
+++ b/reachable.h
@@ -0,0 +1,6 @@
+#ifndef REACHEABLE_H
+#define REACHEABLE_H
+
+extern void mark_reachable_objects(struct rev_info *revs, int mark_reflog);
+
+#endif