1#include "cache.h"
2#include "tag.h"
3#include "commit.h"
4#include "tree.h"
5#include "blob.h"
6#include "diff.h"
7#include "tree-walk.h"
8#include "revision.h"
9#include "list-objects.h"
10static void process_blob(struct rev_info *revs,
12 struct blob *blob,
13 struct object_array *p,
14 struct name_path *path,
15 const char *name)
16{
17 struct object *obj = &blob->object;
18 if (!revs->blob_objects)
20 return;
21 if (obj->flags & (UNINTERESTING | SEEN))
22 return;
23 obj->flags |= SEEN;
24 name = xstrdup(name);
25 add_object(obj, p, path, name);
26}
27/*
29 * Processing a gitlink entry currently does nothing, since
30 * we do not recurse into the subproject.
31 *
32 * We *could* eventually add a flag that actually does that,
33 * which would involve:
34 * - is the subproject actually checked out?
35 * - if so, see if the subproject has already been added
36 * to the alternates list, and add it if not.
37 * - process the commit (or tag) the gitlink points to
38 * recursively.
39 *
40 * However, it's unclear whether there is really ever any
41 * reason to see superprojects and subprojects as such a
42 * "unified" object pool (potentially resulting in a totally
43 * humongous pack - avoiding which was the whole point of
44 * having gitlinks in the first place!).
45 *
46 * So for now, there is just a note that we *could* follow
47 * the link, and how to do it. Whether it necessarily makes
48 * any sense what-so-ever to ever do that is another issue.
49 */
50static void process_gitlink(struct rev_info *revs,
51 const unsigned char *sha1,
52 struct object_array *p,
53 struct name_path *path,
54 const char *name)
55{
56 /* Nothing to do */
57}
58static void process_tree(struct rev_info *revs,
60 struct tree *tree,
61 struct object_array *p,
62 struct name_path *path,
63 const char *name)
64{
65 struct object *obj = &tree->object;
66 struct tree_desc desc;
67 struct name_entry entry;
68 struct name_path me;
69 if (!revs->tree_objects)
71 return;
72 if (obj->flags & (UNINTERESTING | SEEN))
73 return;
74 if (parse_tree(tree) < 0)
75 die("bad tree object %s", sha1_to_hex(obj->sha1));
76 obj->flags |= SEEN;
77 name = xstrdup(name);
78 add_object(obj, p, path, name);
79 me.up = path;
80 me.elem = name;
81 me.elem_len = strlen(name);
82 init_tree_desc(&desc, tree->buffer, tree->size);
84 while (tree_entry(&desc, &entry)) {
86 if (S_ISDIR(entry.mode))
87 process_tree(revs,
88 lookup_tree(entry.sha1),
89 p, &me, entry.path);
90 else if (S_ISGITLINK(entry.mode))
91 process_gitlink(revs, entry.sha1,
92 p, &me, entry.path);
93 else
94 process_blob(revs,
95 lookup_blob(entry.sha1),
96 p, &me, entry.path);
97 }
98 free(tree->buffer);
99 tree->buffer = NULL;
100}
101static void mark_edge_parents_uninteresting(struct commit *commit,
103 struct rev_info *revs,
104 show_edge_fn show_edge)
105{
106 struct commit_list *parents;
107 for (parents = commit->parents; parents; parents = parents->next) {
109 struct commit *parent = parents->item;
110 if (!(parent->object.flags & UNINTERESTING))
111 continue;
112 mark_tree_uninteresting(parent->tree);
113 if (revs->edge_hint && !(parent->object.flags & SHOWN)) {
114 parent->object.flags |= SHOWN;
115 show_edge(parent);
116 }
117 }
118}
119void mark_edges_uninteresting(struct commit_list *list,
121 struct rev_info *revs,
122 show_edge_fn show_edge)
123{
124 for ( ; list; list = list->next) {
125 struct commit *commit = list->item;
126 if (commit->object.flags & UNINTERESTING) {
128 mark_tree_uninteresting(commit->tree);
129 continue;
130 }
131 mark_edge_parents_uninteresting(commit, revs, show_edge);
132 }
133}
134void traverse_commit_list(struct rev_info *revs,
136 void (*show_commit)(struct commit *),
137 void (*show_object)(struct object_array_entry *))
138{
139 int i;
140 struct commit *commit;
141 struct object_array objects = { 0, 0, NULL };
142 while ((commit = get_revision(revs)) != NULL) {
144 process_tree(revs, commit->tree, &objects, NULL, "");
145 show_commit(commit);
146 }
147 for (i = 0; i < revs->pending.nr; i++) {
148 struct object_array_entry *pending = revs->pending.objects + i;
149 struct object *obj = pending->item;
150 const char *name = pending->name;
151 if (obj->flags & (UNINTERESTING | SEEN))
152 continue;
153 if (obj->type == OBJ_TAG) {
154 obj->flags |= SEEN;
155 add_object_array(obj, name, &objects);
156 continue;
157 }
158 if (obj->type == OBJ_TREE) {
159 process_tree(revs, (struct tree *)obj, &objects,
160 NULL, name);
161 continue;
162 }
163 if (obj->type == OBJ_BLOB) {
164 process_blob(revs, (struct blob *)obj, &objects,
165 NULL, name);
166 continue;
167 }
168 die("unknown pending object %s (%s)",
169 sha1_to_hex(obj->sha1), name);
170 }
171 for (i = 0; i < objects.nr; i++)
172 show_object(&objects.objects[i]);
173 free(objects.objects);
174 if (revs->pending.nr) {
175 free(revs->pending.objects);
176 revs->pending.nr = 0;
177 revs->pending.alloc = 0;
178 revs->pending.objects = NULL;
179 }
180}