make add_object_array_with_context interface more sane
[git/git.git] / list-objects.c
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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"
10
11static void process_blob(struct rev_info *revs,
12 struct blob *blob,
8d2dfc49 13 show_object_fn show,
c64ed70d 14 struct name_path *path,
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15 const char *name,
16 void *cb_data)
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17{
18 struct object *obj = &blob->object;
19
20 if (!revs->blob_objects)
21 return;
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22 if (!obj)
23 die("bad blob object");
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24 if (obj->flags & (UNINTERESTING | SEEN))
25 return;
26 obj->flags |= SEEN;
49473672 27 show(obj, path, name, cb_data);
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28}
29
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30/*
31 * Processing a gitlink entry currently does nothing, since
32 * we do not recurse into the subproject.
33 *
34 * We *could* eventually add a flag that actually does that,
35 * which would involve:
36 * - is the subproject actually checked out?
37 * - if so, see if the subproject has already been added
38 * to the alternates list, and add it if not.
39 * - process the commit (or tag) the gitlink points to
40 * recursively.
41 *
42 * However, it's unclear whether there is really ever any
43 * reason to see superprojects and subprojects as such a
44 * "unified" object pool (potentially resulting in a totally
45 * humongous pack - avoiding which was the whole point of
46 * having gitlinks in the first place!).
47 *
48 * So for now, there is just a note that we *could* follow
49 * the link, and how to do it. Whether it necessarily makes
50 * any sense what-so-ever to ever do that is another issue.
51 */
52static void process_gitlink(struct rev_info *revs,
53 const unsigned char *sha1,
8d2dfc49 54 show_object_fn show,
6e2f441b 55 struct name_path *path,
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56 const char *name,
57 void *cb_data)
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58{
59 /* Nothing to do */
60}
61
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62static void process_tree(struct rev_info *revs,
63 struct tree *tree,
8d2dfc49 64 show_object_fn show,
c64ed70d 65 struct name_path *path,
cc5fa2fd 66 struct strbuf *base,
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67 const char *name,
68 void *cb_data)
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69{
70 struct object *obj = &tree->object;
71 struct tree_desc desc;
72 struct name_entry entry;
73 struct name_path me;
d688cf07
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74 enum interesting match = revs->diffopt.pathspec.nr == 0 ?
75 all_entries_interesting: entry_not_interesting;
cc5fa2fd 76 int baselen = base->len;
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77
78 if (!revs->tree_objects)
79 return;
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80 if (!obj)
81 die("bad tree object");
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82 if (obj->flags & (UNINTERESTING | SEEN))
83 return;
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84 if (parse_tree(tree) < 0) {
85 if (revs->ignore_missing_links)
86 return;
c64ed70d 87 die("bad tree object %s", sha1_to_hex(obj->sha1));
2db1a43f 88 }
c64ed70d 89 obj->flags |= SEEN;
49473672 90 show(obj, path, name, cb_data);
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91 me.up = path;
92 me.elem = name;
93 me.elem_len = strlen(name);
94
97d0b74a 95 if (!match) {
cc5fa2fd
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96 strbuf_addstr(base, name);
97 if (base->len)
98 strbuf_addch(base, '/');
99 }
100
6fda5e51 101 init_tree_desc(&desc, tree->buffer, tree->size);
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102
103 while (tree_entry(&desc, &entry)) {
d688cf07 104 if (match != all_entries_interesting) {
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105 match = tree_entry_interesting(&entry, base, 0,
106 &revs->diffopt.pathspec);
d688cf07 107 if (match == all_entries_not_interesting)
cc5fa2fd 108 break;
d688cf07 109 if (match == entry_not_interesting)
cc5fa2fd 110 continue;
cc5fa2fd
EN
111 }
112
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113 if (S_ISDIR(entry.mode))
114 process_tree(revs,
115 lookup_tree(entry.sha1),
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116 show, &me, base, entry.path,
117 cb_data);
302b9282 118 else if (S_ISGITLINK(entry.mode))
6e2f441b 119 process_gitlink(revs, entry.sha1,
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120 show, &me, entry.path,
121 cb_data);
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122 else
123 process_blob(revs,
124 lookup_blob(entry.sha1),
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125 show, &me, entry.path,
126 cb_data);
c64ed70d 127 }
cc5fa2fd 128 strbuf_setlen(base, baselen);
6e454b9a 129 free_tree_buffer(tree);
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130}
131
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132static void mark_edge_parents_uninteresting(struct commit *commit,
133 struct rev_info *revs,
134 show_edge_fn show_edge)
135{
136 struct commit_list *parents;
137
138 for (parents = commit->parents; parents; parents = parents->next) {
139 struct commit *parent = parents->item;
140 if (!(parent->object.flags & UNINTERESTING))
141 continue;
142 mark_tree_uninteresting(parent->tree);
143 if (revs->edge_hint && !(parent->object.flags & SHOWN)) {
144 parent->object.flags |= SHOWN;
145 show_edge(parent);
146 }
147 }
148}
149
e76a5fb4 150void mark_edges_uninteresting(struct rev_info *revs, show_edge_fn show_edge)
8d1d8f83 151{
e76a5fb4 152 struct commit_list *list;
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153 int i;
154
e76a5fb4 155 for (list = revs->commits; list; list = list->next) {
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156 struct commit *commit = list->item;
157
158 if (commit->object.flags & UNINTERESTING) {
159 mark_tree_uninteresting(commit->tree);
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160 if (revs->edge_hint && !(commit->object.flags & SHOWN)) {
161 commit->object.flags |= SHOWN;
162 show_edge(commit);
163 }
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164 continue;
165 }
166 mark_edge_parents_uninteresting(commit, revs, show_edge);
167 }
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168 if (revs->edge_hint) {
169 for (i = 0; i < revs->cmdline.nr; i++) {
170 struct object *obj = revs->cmdline.rev[i].item;
171 struct commit *commit = (struct commit *)obj;
172 if (obj->type != OBJ_COMMIT || !(obj->flags & UNINTERESTING))
173 continue;
174 mark_tree_uninteresting(commit->tree);
175 if (!(obj->flags & SHOWN)) {
176 obj->flags |= SHOWN;
177 show_edge(commit);
178 }
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179 }
180 }
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181}
182
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183static void add_pending_tree(struct rev_info *revs, struct tree *tree)
184{
185 add_pending_object(revs, &tree->object, "");
186}
187
c64ed70d 188void traverse_commit_list(struct rev_info *revs,
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189 show_commit_fn show_commit,
190 show_object_fn show_object,
191 void *data)
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192{
193 int i;
194 struct commit *commit;
cc5fa2fd 195 struct strbuf base;
c64ed70d 196
cc5fa2fd 197 strbuf_init(&base, PATH_MAX);
c64ed70d 198 while ((commit = get_revision(revs)) != NULL) {
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199 /*
200 * an uninteresting boundary commit may not have its tree
201 * parsed yet, but we are not going to show them anyway
202 */
203 if (commit->tree)
204 add_pending_tree(revs, commit->tree);
11c211fa 205 show_commit(commit, data);
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206 }
207 for (i = 0; i < revs->pending.nr; i++) {
208 struct object_array_entry *pending = revs->pending.objects + i;
209 struct object *obj = pending->item;
210 const char *name = pending->name;
211 if (obj->flags & (UNINTERESTING | SEEN))
212 continue;
213 if (obj->type == OBJ_TAG) {
214 obj->flags |= SEEN;
49473672 215 show_object(obj, NULL, name, data);
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216 continue;
217 }
218 if (obj->type == OBJ_TREE) {
8d2dfc49 219 process_tree(revs, (struct tree *)obj, show_object,
49473672 220 NULL, &base, name, data);
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221 continue;
222 }
223 if (obj->type == OBJ_BLOB) {
8d2dfc49 224 process_blob(revs, (struct blob *)obj, show_object,
49473672 225 NULL, name, data);
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226 continue;
227 }
228 die("unknown pending object %s (%s)",
229 sha1_to_hex(obj->sha1), name);
230 }
46be8231 231 object_array_clear(&revs->pending);
cc5fa2fd 232 strbuf_release(&base);
c64ed70d 233}