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Commit | Line | Data |
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94421474 JH |
1 | #include "cache.h" |
2 | #include "refs.h" | |
3 | #include "tag.h" | |
4 | #include "commit.h" | |
5 | #include "blob.h" | |
6 | #include "diff.h" | |
7 | #include "revision.h" | |
8 | #include "reachable.h" | |
9 | #include "cache-tree.h" | |
10 | ||
11 | static void process_blob(struct blob *blob, | |
12 | struct object_array *p, | |
13 | struct name_path *path, | |
14 | const char *name) | |
15 | { | |
16 | struct object *obj = &blob->object; | |
17 | ||
18 | if (obj->flags & SEEN) | |
19 | return; | |
20 | obj->flags |= SEEN; | |
21 | /* Nothing to do, really .. The blob lookup was the important part */ | |
22 | } | |
23 | ||
24 | static void process_tree(struct tree *tree, | |
25 | struct object_array *p, | |
26 | struct name_path *path, | |
27 | const char *name) | |
28 | { | |
29 | struct object *obj = &tree->object; | |
30 | struct tree_desc desc; | |
31 | struct name_entry entry; | |
32 | struct name_path me; | |
33 | ||
34 | if (obj->flags & SEEN) | |
35 | return; | |
36 | obj->flags |= SEEN; | |
37 | if (parse_tree(tree) < 0) | |
38 | die("bad tree object %s", sha1_to_hex(obj->sha1)); | |
39 | name = xstrdup(name); | |
40 | add_object(obj, p, path, name); | |
41 | me.up = path; | |
42 | me.elem = name; | |
43 | me.elem_len = strlen(name); | |
44 | ||
45 | desc.buf = tree->buffer; | |
46 | desc.size = tree->size; | |
47 | ||
48 | while (tree_entry(&desc, &entry)) { | |
49 | if (S_ISDIR(entry.mode)) | |
50 | process_tree(lookup_tree(entry.sha1), p, &me, entry.path); | |
51 | else | |
52 | process_blob(lookup_blob(entry.sha1), p, &me, entry.path); | |
53 | } | |
54 | free(tree->buffer); | |
55 | tree->buffer = NULL; | |
56 | } | |
57 | ||
58 | static void process_tag(struct tag *tag, struct object_array *p, const char *name) | |
59 | { | |
60 | struct object *obj = &tag->object; | |
61 | struct name_path me; | |
62 | ||
63 | if (obj->flags & SEEN) | |
64 | return; | |
65 | obj->flags |= SEEN; | |
66 | ||
67 | me.up = NULL; | |
68 | me.elem = "tag:/"; | |
69 | me.elem_len = 5; | |
70 | ||
71 | if (parse_tag(tag) < 0) | |
72 | die("bad tag object %s", sha1_to_hex(obj->sha1)); | |
73 | add_object(tag->tagged, p, NULL, name); | |
74 | } | |
75 | ||
76 | static void walk_commit_list(struct rev_info *revs) | |
77 | { | |
78 | int i; | |
79 | struct commit *commit; | |
80 | struct object_array objects = { 0, 0, NULL }; | |
81 | ||
82 | /* Walk all commits, process their trees */ | |
83 | while ((commit = get_revision(revs)) != NULL) | |
84 | process_tree(commit->tree, &objects, NULL, ""); | |
85 | ||
86 | /* Then walk all the pending objects, recursively processing them too */ | |
87 | for (i = 0; i < revs->pending.nr; i++) { | |
88 | struct object_array_entry *pending = revs->pending.objects + i; | |
89 | struct object *obj = pending->item; | |
90 | const char *name = pending->name; | |
91 | if (obj->type == OBJ_TAG) { | |
92 | process_tag((struct tag *) obj, &objects, name); | |
93 | continue; | |
94 | } | |
95 | if (obj->type == OBJ_TREE) { | |
96 | process_tree((struct tree *)obj, &objects, NULL, name); | |
97 | continue; | |
98 | } | |
99 | if (obj->type == OBJ_BLOB) { | |
100 | process_blob((struct blob *)obj, &objects, NULL, name); | |
101 | continue; | |
102 | } | |
103 | die("unknown pending object %s (%s)", sha1_to_hex(obj->sha1), name); | |
104 | } | |
105 | } | |
106 | ||
883d60fa JS |
107 | static int add_one_reflog_ent(unsigned char *osha1, unsigned char *nsha1, |
108 | const char *email, unsigned long timestamp, int tz, | |
109 | const char *message, void *cb_data) | |
94421474 JH |
110 | { |
111 | struct object *object; | |
112 | struct rev_info *revs = (struct rev_info *)cb_data; | |
113 | ||
114 | object = parse_object(osha1); | |
115 | if (object) | |
116 | add_pending_object(revs, object, ""); | |
117 | object = parse_object(nsha1); | |
118 | if (object) | |
119 | add_pending_object(revs, object, ""); | |
120 | return 0; | |
121 | } | |
122 | ||
123 | static int add_one_ref(const char *path, const unsigned char *sha1, int flag, void *cb_data) | |
124 | { | |
125 | struct object *object = parse_object(sha1); | |
126 | struct rev_info *revs = (struct rev_info *)cb_data; | |
127 | ||
128 | if (!object) | |
129 | die("bad object ref: %s:%s", path, sha1_to_hex(sha1)); | |
130 | add_pending_object(revs, object, ""); | |
131 | ||
132 | return 0; | |
133 | } | |
134 | ||
135 | static int add_one_reflog(const char *path, const unsigned char *sha1, int flag, void *cb_data) | |
136 | { | |
137 | for_each_reflog_ent(path, add_one_reflog_ent, cb_data); | |
138 | return 0; | |
139 | } | |
140 | ||
141 | static void add_one_tree(const unsigned char *sha1, struct rev_info *revs) | |
142 | { | |
143 | struct tree *tree = lookup_tree(sha1); | |
144 | add_pending_object(revs, &tree->object, ""); | |
145 | } | |
146 | ||
147 | static void add_cache_tree(struct cache_tree *it, struct rev_info *revs) | |
148 | { | |
149 | int i; | |
150 | ||
151 | if (it->entry_count >= 0) | |
152 | add_one_tree(it->sha1, revs); | |
153 | for (i = 0; i < it->subtree_nr; i++) | |
154 | add_cache_tree(it->down[i]->cache_tree, revs); | |
155 | } | |
156 | ||
157 | static void add_cache_refs(struct rev_info *revs) | |
158 | { | |
159 | int i; | |
160 | ||
161 | read_cache(); | |
162 | for (i = 0; i < active_nr; i++) { | |
163 | lookup_blob(active_cache[i]->sha1); | |
164 | /* | |
165 | * We could add the blobs to the pending list, but quite | |
166 | * frankly, we don't care. Once we've looked them up, and | |
167 | * added them as objects, we've really done everything | |
168 | * there is to do for a blob | |
169 | */ | |
170 | } | |
171 | if (active_cache_tree) | |
172 | add_cache_tree(active_cache_tree, revs); | |
173 | } | |
174 | ||
175 | void mark_reachable_objects(struct rev_info *revs, int mark_reflog) | |
176 | { | |
177 | /* | |
178 | * Set up revision parsing, and mark us as being interested | |
179 | * in all object types, not just commits. | |
180 | */ | |
181 | revs->tag_objects = 1; | |
182 | revs->blob_objects = 1; | |
183 | revs->tree_objects = 1; | |
184 | ||
185 | /* Add all refs from the index file */ | |
186 | add_cache_refs(revs); | |
187 | ||
188 | /* Add all external refs */ | |
189 | for_each_ref(add_one_ref, revs); | |
190 | ||
191 | /* Add all reflog info from refs */ | |
192 | if (mark_reflog) | |
193 | for_each_ref(add_one_reflog, revs); | |
194 | ||
195 | /* | |
196 | * Set up the revision walk - this will move all commits | |
197 | * from the pending list to the commit walking list. | |
198 | */ | |
199 | prepare_revision_walk(revs); | |
200 | walk_commit_list(revs); | |
201 | } |