diff options
Diffstat (limited to 'list-objects.c')
| -rw-r--r-- | list-objects.c | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/list-objects.c b/list-objects.c new file mode 100644 index 0000000000..8953548c07 --- /dev/null +++ b/list-objects.c @@ -0,0 +1,184 @@ +#include "cache.h" +#include "tag.h" +#include "commit.h" +#include "tree.h" +#include "blob.h" +#include "diff.h" +#include "tree-walk.h" +#include "revision.h" +#include "list-objects.h" + +static void process_blob(struct rev_info *revs, + struct blob *blob, + show_object_fn show, + struct name_path *path, + const char *name) +{ + struct object *obj = &blob->object; + + if (!revs->blob_objects) + return; + if (!obj) + die("bad blob object"); + if (obj->flags & (UNINTERESTING | SEEN)) + return; + obj->flags |= SEEN; + show(obj, path, name); +} + +/* + * Processing a gitlink entry currently does nothing, since + * we do not recurse into the subproject. + * + * We *could* eventually add a flag that actually does that, + * which would involve: + * - is the subproject actually checked out? + * - if so, see if the subproject has already been added + * to the alternates list, and add it if not. + * - process the commit (or tag) the gitlink points to + * recursively. + * + * However, it's unclear whether there is really ever any + * reason to see superprojects and subprojects as such a + * "unified" object pool (potentially resulting in a totally + * humongous pack - avoiding which was the whole point of + * having gitlinks in the first place!). + * + * So for now, there is just a note that we *could* follow + * the link, and how to do it. Whether it necessarily makes + * any sense what-so-ever to ever do that is another issue. + */ +static void process_gitlink(struct rev_info *revs, + const unsigned char *sha1, + show_object_fn show, + struct name_path *path, + const char *name) +{ + /* Nothing to do */ +} + +static void process_tree(struct rev_info *revs, + struct tree *tree, + show_object_fn show, + 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 (!revs->tree_objects) + return; + if (!obj) + die("bad tree object"); + if (obj->flags & (UNINTERESTING | SEEN)) + return; + if (parse_tree(tree) < 0) + die("bad tree object %s", sha1_to_hex(obj->sha1)); + obj->flags |= SEEN; + show(obj, path, name); + me.up = path; + me.elem = name; + me.elem_len = strlen(name); + + init_tree_desc(&desc, tree->buffer, tree->size); + + while (tree_entry(&desc, &entry)) { + if (S_ISDIR(entry.mode)) + process_tree(revs, + lookup_tree(entry.sha1), + show, &me, entry.path); + else if (S_ISGITLINK(entry.mode)) + process_gitlink(revs, entry.sha1, + show, &me, entry.path); + else + process_blob(revs, + lookup_blob(entry.sha1), + show, &me, entry.path); + } + free(tree->buffer); + tree->buffer = NULL; +} + +static void mark_edge_parents_uninteresting(struct commit *commit, + struct rev_info *revs, + show_edge_fn show_edge) +{ + struct commit_list *parents; + + for (parents = commit->parents; parents; parents = parents->next) { + struct commit *parent = parents->item; + if (!(parent->object.flags & UNINTERESTING)) + continue; + mark_tree_uninteresting(parent->tree); + if (revs->edge_hint && !(parent->object.flags & SHOWN)) { + parent->object.flags |= SHOWN; + show_edge(parent); + } + } +} + +void mark_edges_uninteresting(struct commit_list *list, + struct rev_info *revs, + show_edge_fn show_edge) +{ + for ( ; list; list = list->next) { + struct commit *commit = list->item; + + if (commit->object.flags & UNINTERESTING) { + mark_tree_uninteresting(commit->tree); + continue; + } + mark_edge_parents_uninteresting(commit, revs, show_edge); + } +} + +static void add_pending_tree(struct rev_info *revs, struct tree *tree) +{ + add_pending_object(revs, &tree->object, ""); +} + +void traverse_commit_list(struct rev_info *revs, + show_commit_fn show_commit, + show_object_fn show_object, + void *data) +{ + int i; + struct commit *commit; + + while ((commit = get_revision(revs)) != NULL) { + add_pending_tree(revs, commit->tree); + show_commit(commit, data); + } + 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->flags & (UNINTERESTING | SEEN)) + continue; + if (obj->type == OBJ_TAG) { + obj->flags |= SEEN; + show_object(obj, NULL, name); + continue; + } + if (obj->type == OBJ_TREE) { + process_tree(revs, (struct tree *)obj, show_object, + NULL, name); + continue; + } + if (obj->type == OBJ_BLOB) { + process_blob(revs, (struct blob *)obj, show_object, + NULL, name); + continue; + } + die("unknown pending object %s (%s)", + sha1_to_hex(obj->sha1), name); + } + if (revs->pending.nr) { + free(revs->pending.objects); + revs->pending.nr = 0; + revs->pending.alloc = 0; + revs->pending.objects = NULL; + } +} |