return n;
}
-struct object_list **add_object(struct object *obj,
- struct object_list **p,
- struct name_path *path,
- const char *name)
+void add_object(struct object *obj,
+ struct object_array *p,
+ struct name_path *path,
+ const char *name)
{
- struct object_list *entry = xmalloc(sizeof(*entry));
- entry->item = obj;
- entry->next = *p;
- entry->name = path_name(path, name);
- *p = entry;
- return &entry->next;
+ add_object_array(obj, path_name(path, name), p);
}
static void mark_blob_uninteresting(struct blob *blob)
void mark_tree_uninteresting(struct tree *tree)
{
+ struct tree_desc desc;
+ struct name_entry entry;
struct object *obj = &tree->object;
- struct tree_entry_list *entry;
if (obj->flags & UNINTERESTING)
return;
return;
if (parse_tree(tree) < 0)
die("bad tree %s", sha1_to_hex(obj->sha1));
- entry = tree->entries;
- tree->entries = NULL;
- while (entry) {
- struct tree_entry_list *next = entry->next;
- if (entry->directory)
- mark_tree_uninteresting(entry->item.tree);
+
+ desc.buf = tree->buffer;
+ desc.size = tree->size;
+ while (tree_entry(&desc, &entry)) {
+ if (S_ISDIR(entry.mode))
+ mark_tree_uninteresting(lookup_tree(entry.sha1));
else
- mark_blob_uninteresting(entry->item.blob);
- free(entry);
- entry = next;
+ mark_blob_uninteresting(lookup_blob(entry.sha1));
}
+
+ /*
+ * We don't care about the tree any more
+ * after it has been marked uninteresting.
+ */
+ free(tree->buffer);
+ tree->buffer = NULL;
}
void mark_parents_uninteresting(struct commit *commit)
}
}
-static void add_pending_object(struct rev_info *revs, struct object *obj, const char *name)
+void add_pending_object(struct rev_info *revs, struct object *obj, const char *name)
{
- add_object(obj, &revs->pending_objects, NULL, name);
+ add_object_array(obj, name, &revs->pending);
}
static struct object *get_reference(struct rev_info *revs, const char *name, const unsigned char *sha1, unsigned int flags)
/*
* Tag object? Look what it points to..
*/
- while (object->type == tag_type) {
+ while (object->type == OBJ_TAG) {
struct tag *tag = (struct tag *) object;
if (revs->tag_objects && !(flags & UNINTERESTING))
add_pending_object(revs, object, tag->tag);
* Commit object? Just return it, we'll do all the complex
* reachability crud.
*/
- if (object->type == commit_type) {
+ if (object->type == OBJ_COMMIT) {
struct commit *commit = (struct commit *)object;
if (parse_commit(commit) < 0)
die("unable to parse commit %s", name);
* Tree object? Either mark it uniniteresting, or add it
* to the list of objects to look at later..
*/
- if (object->type == tree_type) {
+ if (object->type == OBJ_TREE) {
struct tree *tree = (struct tree *)object;
if (!revs->tree_objects)
return NULL;
/*
* Blob object? You know the drill by now..
*/
- if (object->type == blob_type) {
+ if (object->type == OBJ_BLOB) {
struct blob *blob = (struct blob *)object;
if (!revs->blob_objects)
return NULL;
static void try_to_simplify_commit(struct rev_info *revs, struct commit *commit)
{
struct commit_list **pp, *parent;
- int tree_changed = 0;
+ int tree_changed = 0, tree_same = 0;
if (!commit->tree)
return;
parse_commit(p);
switch (rev_compare_tree(revs, p->tree, commit->tree)) {
case REV_TREE_SAME:
- if (p->object.flags & UNINTERESTING) {
+ tree_same = 1;
+ if (!revs->simplify_history || (p->object.flags & UNINTERESTING)) {
/* Even if a merge with an uninteresting
* side branch brought the entire change
* we are interested in, we do not want
}
die("bad tree compare for commit %s", sha1_to_hex(commit->object.sha1));
}
- if (tree_changed)
+ if (tree_changed && !tree_same)
commit->object.flags |= TREECHANGE;
}
for_each_ref(handle_one_ref);
}
-void init_revisions(struct rev_info *revs)
+static int add_parents_only(struct rev_info *revs, const char *arg, int flags)
+{
+ unsigned char sha1[20];
+ struct object *it;
+ struct commit *commit;
+ struct commit_list *parents;
+
+ if (*arg == '^') {
+ flags ^= UNINTERESTING;
+ arg++;
+ }
+ if (get_sha1(arg, sha1))
+ return 0;
+ while (1) {
+ it = get_reference(revs, arg, sha1, 0);
+ if (it->type != OBJ_TAG)
+ break;
+ memcpy(sha1, ((struct tag*)it)->tagged->sha1, 20);
+ }
+ if (it->type != OBJ_COMMIT)
+ return 0;
+ commit = (struct commit *)it;
+ for (parents = commit->parents; parents; parents = parents->next) {
+ it = &parents->item->object;
+ it->flags |= flags;
+ add_pending_object(revs, it, arg);
+ }
+ return 1;
+}
+
+void init_revisions(struct rev_info *revs, const char *prefix)
{
memset(revs, 0, sizeof(*revs));
revs->abbrev = DEFAULT_ABBREV;
revs->ignore_merges = 1;
+ revs->simplify_history = 1;
revs->pruning.recursive = 1;
revs->pruning.add_remove = file_add_remove;
revs->pruning.change = file_change;
revs->lifo = 1;
revs->dense = 1;
- revs->prefix = setup_git_directory();
+ revs->prefix = prefix;
revs->max_age = -1;
revs->min_age = -1;
revs->max_count = -1;
diff_setup(&revs->diffopt);
}
+static void add_pending_commit_list(struct rev_info *revs,
+ struct commit_list *commit_list,
+ unsigned int flags)
+{
+ while (commit_list) {
+ struct object *object = &commit_list->item->object;
+ object->flags |= flags;
+ add_pending_object(revs, object, sha1_to_hex(object->sha1));
+ commit_list = commit_list->next;
+ }
+}
+
+static void prepare_show_merge(struct rev_info *revs)
+{
+ struct commit_list *bases;
+ struct commit *head, *other;
+ unsigned char sha1[20];
+ const char **prune = NULL;
+ int i, prune_num = 1; /* counting terminating NULL */
+
+ if (get_sha1("HEAD", sha1) || !(head = lookup_commit(sha1)))
+ die("--merge without HEAD?");
+ if (get_sha1("MERGE_HEAD", sha1) || !(other = lookup_commit(sha1)))
+ die("--merge without MERGE_HEAD?");
+ add_pending_object(revs, &head->object, "HEAD");
+ add_pending_object(revs, &other->object, "MERGE_HEAD");
+ bases = get_merge_bases(head, other, 1);
+ while (bases) {
+ struct commit *it = bases->item;
+ struct commit_list *n = bases->next;
+ free(bases);
+ bases = n;
+ it->object.flags |= UNINTERESTING;
+ add_pending_object(revs, &it->object, "(merge-base)");
+ }
+
+ if (!active_nr)
+ read_cache();
+ for (i = 0; i < active_nr; i++) {
+ struct cache_entry *ce = active_cache[i];
+ if (!ce_stage(ce))
+ continue;
+ if (ce_path_match(ce, revs->prune_data)) {
+ prune_num++;
+ prune = xrealloc(prune, sizeof(*prune) * prune_num);
+ prune[prune_num-2] = ce->name;
+ prune[prune_num-1] = NULL;
+ }
+ while ((i+1 < active_nr) &&
+ ce_same_name(ce, active_cache[i+1]))
+ i++;
+ }
+ revs->prune_data = prune;
+}
+
/*
* Parse revision information, filling in the "rev_info" structure,
* and removing the used arguments from the argument list.
*/
int setup_revisions(int argc, const char **argv, struct rev_info *revs, const char *def)
{
- int i, flags, seen_dashdash;
+ int i, flags, seen_dashdash, show_merge;
const char **unrecognized = argv + 1;
int left = 1;
break;
}
- flags = 0;
+ flags = show_merge = 0;
for (i = 1; i < argc; i++) {
struct object *object;
const char *arg = argv[i];
revs->max_count = atoi(arg + 12);
continue;
}
- /* accept -<digit>, like traditilnal "head" */
+ /* accept -<digit>, like traditional "head" */
if ((*arg == '-') && isdigit(arg[1])) {
revs->max_count = atoi(arg + 1);
continue;
def = argv[i];
continue;
}
+ if (!strcmp(arg, "--merge")) {
+ show_merge = 1;
+ continue;
+ }
if (!strcmp(arg, "--topo-order")) {
revs->topo_order = 1;
continue;
}
if (!strcmp(arg, "-c")) {
revs->diff = 1;
+ revs->dense_combined_merges = 0;
revs->combine_merges = 1;
continue;
}
revs->abbrev = DEFAULT_ABBREV;
continue;
}
+ if (!strncmp(arg, "--abbrev=", 9)) {
+ revs->abbrev = strtoul(arg + 9, NULL, 10);
+ if (revs->abbrev < MINIMUM_ABBREV)
+ revs->abbrev = MINIMUM_ABBREV;
+ else if (revs->abbrev > 40)
+ revs->abbrev = 40;
+ continue;
+ }
if (!strcmp(arg, "--abbrev-commit")) {
revs->abbrev_commit = 1;
continue;
revs->full_diff = 1;
continue;
}
+ if (!strcmp(arg, "--full-history")) {
+ revs->simplify_history = 0;
+ continue;
+ }
opts = diff_opt_parse(&revs->diffopt, argv+i, argc-i);
if (opts > 0) {
revs->diff = 1;
unsigned char from_sha1[20];
const char *next = dotdot + 2;
const char *this = arg;
+ int symmetric = *next == '.';
+ unsigned int flags_exclude = flags ^ UNINTERESTING;
+
*dotdot = 0;
+ next += symmetric;
+
if (!*next)
next = "HEAD";
if (dotdot == arg)
this = "HEAD";
if (!get_sha1(this, from_sha1) &&
!get_sha1(next, sha1)) {
- struct object *exclude;
- struct object *include;
-
- exclude = get_reference(revs, this, from_sha1, flags ^ UNINTERESTING);
- include = get_reference(revs, next, sha1, flags);
- if (!exclude || !include)
- die("Invalid revision range %s..%s", arg, next);
- add_pending_object(revs, exclude, this);
- add_pending_object(revs, include, next);
+ struct commit *a, *b;
+ struct commit_list *exclude;
+
+ a = lookup_commit_reference(from_sha1);
+ b = lookup_commit_reference(sha1);
+ if (!a || !b) {
+ die(symmetric ?
+ "Invalid symmetric difference expression %s...%s" :
+ "Invalid revision range %s..%s",
+ arg, next);
+ }
+
+ if (!seen_dashdash) {
+ *dotdot = '.';
+ verify_non_filename(revs->prefix, arg);
+ }
+
+ if (symmetric) {
+ exclude = get_merge_bases(a, b, 1);
+ add_pending_commit_list(revs, exclude,
+ flags_exclude);
+ free_commit_list(exclude);
+ a->object.flags |= flags;
+ } else
+ a->object.flags |= flags_exclude;
+ b->object.flags |= flags;
+ add_pending_object(revs, &a->object, this);
+ add_pending_object(revs, &b->object, next);
continue;
}
*dotdot = '.';
}
+ dotdot = strstr(arg, "^@");
+ if (dotdot && !dotdot[2]) {
+ *dotdot = 0;
+ if (add_parents_only(revs, arg, flags))
+ continue;
+ *dotdot = '^';
+ }
local_flags = 0;
if (*arg == '^') {
local_flags = UNINTERESTING;
arg++;
}
- if (get_sha1(arg, sha1) < 0) {
+ if (get_sha1(arg, sha1)) {
int j;
if (seen_dashdash || local_flags)
die("bad revision '%s'", arg);
- /* If we didn't have a "--", all filenames must exist */
+ /* If we didn't have a "--":
+ * (1) all filenames must exist;
+ * (2) all rev-args must not be interpretable
+ * as a valid filename.
+ * but the latter we have checked in the main loop.
+ */
for (j = i; j < argc; j++)
verify_filename(revs->prefix, argv[j]);
revs->prune_data = get_pathspec(revs->prefix, argv + i);
break;
}
+ if (!seen_dashdash)
+ verify_non_filename(revs->prefix, arg);
object = get_reference(revs, arg, sha1, flags ^ local_flags);
add_pending_object(revs, object, arg);
}
- if (def && !revs->pending_objects) {
+ if (show_merge)
+ prepare_show_merge(revs);
+ if (def && !revs->pending.nr) {
unsigned char sha1[20];
struct object *object;
- if (get_sha1(def, sha1) < 0)
+ if (get_sha1(def, sha1))
die("bad default revision '%s'", def);
object = get_reference(revs, def, sha1, 0);
add_pending_object(revs, object, def);
}
if (revs->combine_merges) {
revs->ignore_merges = 0;
- if (revs->dense_combined_merges &&
- (revs->diffopt.output_format != DIFF_FORMAT_DIFFSTAT))
+ if (revs->dense_combined_merges && !revs->diffopt.output_format)
revs->diffopt.output_format = DIFF_FORMAT_PATCH;
}
revs->diffopt.abbrev = revs->abbrev;
void prepare_revision_walk(struct rev_info *revs)
{
- struct object_list *list;
+ int nr = revs->pending.nr;
+ struct object_array_entry *list = revs->pending.objects;
- list = revs->pending_objects;
- revs->pending_objects = NULL;
- while (list) {
+ revs->pending.nr = 0;
+ revs->pending.alloc = 0;
+ revs->pending.objects = NULL;
+ while (--nr >= 0) {
struct commit *commit = handle_commit(revs, list->item, list->name);
if (commit) {
if (!(commit->object.flags & SEEN)) {
insert_by_date(commit, &revs->commits);
}
}
- list = list->next;
+ list++;
}
if (revs->no_walk)
struct commit *p = *pp;
if (!revs->limited)
add_parents_to_list(revs, p, &revs->commits);
+ if (p->parents && p->parents->next)
+ return 0;
if (p->object.flags & (TREECHANGE | UNINTERESTING))
return 0;
if (!p->parents)
}
do {
- struct commit *commit = revs->commits->item;
+ struct commit_list *entry = revs->commits;
+ struct commit *commit = entry->item;
- revs->commits = revs->commits->next;
+ revs->commits = entry->next;
+ free(entry);
/*
* If we haven't done the list limiting, we need to look at
commit->parents && commit->parents->next)
continue;
if (revs->prune_fn && revs->dense) {
- if (!(commit->object.flags & TREECHANGE))
- continue;
+ /* Commit without changes? */
+ if (!(commit->object.flags & TREECHANGE)) {
+ /* drop merges unless we want parenthood */
+ if (!revs->parents)
+ continue;
+ /* non-merge - always ignore it */
+ if (!commit->parents || !commit->parents->next)
+ continue;
+ }
if (revs->parents)
rewrite_parents(revs, commit);
}