while (parents) {
struct commit *commit = parents->item;
- commit->object.flags |= UNINTERESTING;
-
- /*
- * Normally we haven't parsed the parent
- * yet, so we won't have a parent of a parent
- * here. However, it may turn out that we've
- * reached this commit some other way (where it
- * wasn't uninteresting), in which case we need
- * to mark its parents recursively too..
- */
- if (commit->parents)
- mark_parents_uninteresting(commit);
+ if (!(commit->object.flags & UNINTERESTING)) {
+ commit->object.flags |= UNINTERESTING;
+
+ /*
+ * Normally we haven't parsed the parent
+ * yet, so we won't have a parent of a parent
+ * here. However, it may turn out that we've
+ * reached this commit some other way (where it
+ * wasn't uninteresting), in which case we need
+ * to mark its parents recursively too..
+ */
+ if (commit->parents)
+ mark_parents_uninteresting(commit);
+ }
/*
* A missing commit is ok iff its parent is marked
return 1;
}
-#define TREE_SAME 0
-#define TREE_NEW 1
-#define TREE_DIFFERENT 2
-static int tree_difference = TREE_SAME;
+static int tree_difference = REV_TREE_SAME;
static void file_add_remove(struct diff_options *options,
int addremove, unsigned mode,
const unsigned char *sha1,
const char *base, const char *path)
{
- int diff = TREE_DIFFERENT;
+ int diff = REV_TREE_DIFFERENT;
/*
- * Is it an add of a new file? It means that
- * the old tree didn't have it at all, so we
- * will turn "TREE_SAME" -> "TREE_NEW", but
- * leave any "TREE_DIFFERENT" alone (and if
- * it already was "TREE_NEW", we'll keep it
- * "TREE_NEW" of course).
+ * Is it an add of a new file? It means that the old tree
+ * didn't have it at all, so we will turn "REV_TREE_SAME" ->
+ * "REV_TREE_NEW", but leave any "REV_TREE_DIFFERENT" alone
+ * (and if it already was "REV_TREE_NEW", we'll keep it
+ * "REV_TREE_NEW" of course).
*/
if (addremove == '+') {
diff = tree_difference;
- if (diff != TREE_SAME)
+ if (diff != REV_TREE_SAME)
return;
- diff = TREE_NEW;
+ diff = REV_TREE_NEW;
}
tree_difference = diff;
}
const unsigned char *new_sha1,
const char *base, const char *path)
{
- tree_difference = TREE_DIFFERENT;
+ tree_difference = REV_TREE_DIFFERENT;
}
static struct diff_options diff_opt = {
.change = file_change,
};
-static int compare_tree(struct tree *t1, struct tree *t2)
+int rev_compare_tree(struct tree *t1, struct tree *t2)
{
if (!t1)
- return TREE_NEW;
+ return REV_TREE_NEW;
if (!t2)
- return TREE_DIFFERENT;
- tree_difference = TREE_SAME;
+ return REV_TREE_DIFFERENT;
+ tree_difference = REV_TREE_SAME;
if (diff_tree_sha1(t1->object.sha1, t2->object.sha1, "", &diff_opt) < 0)
- return TREE_DIFFERENT;
+ return REV_TREE_DIFFERENT;
return tree_difference;
}
-static int same_tree_as_empty(struct tree *t1)
+int rev_same_tree_as_empty(struct tree *t1)
{
int retval;
void *tree;
static void try_to_simplify_commit(struct rev_info *revs, struct commit *commit)
{
struct commit_list **pp, *parent;
+ int tree_changed = 0;
if (!commit->tree)
return;
if (!commit->parents) {
- if (!same_tree_as_empty(commit->tree))
+ if (!rev_same_tree_as_empty(commit->tree))
commit->object.flags |= TREECHANGE;
return;
}
while ((parent = *pp) != NULL) {
struct commit *p = parent->item;
- if (p->object.flags & UNINTERESTING) {
- pp = &parent->next;
- continue;
- }
-
parse_commit(p);
- switch (compare_tree(p->tree, commit->tree)) {
- case TREE_SAME:
+ switch (rev_compare_tree(p->tree, commit->tree)) {
+ case REV_TREE_SAME:
+ if (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
+ * to lose the other branches of this
+ * merge, so we just keep going.
+ */
+ pp = &parent->next;
+ continue;
+ }
parent->next = NULL;
commit->parents = parent;
return;
- case TREE_NEW:
- if (revs->remove_empty_trees && same_tree_as_empty(p->tree)) {
- *pp = parent->next;
- continue;
+ case REV_TREE_NEW:
+ if (revs->remove_empty_trees &&
+ rev_same_tree_as_empty(p->tree)) {
+ /* We are adding all the specified
+ * paths from this parent, so the
+ * history beyond this parent is not
+ * interesting. Remove its parents
+ * (they are grandparents for us).
+ * IOW, we pretend this parent is a
+ * "root" commit.
+ */
+ parse_commit(p);
+ p->parents = NULL;
}
/* fallthrough */
- case TREE_DIFFERENT:
+ case REV_TREE_DIFFERENT:
+ tree_changed = 1;
pp = &parent->next;
continue;
}
die("bad tree compare for commit %s", sha1_to_hex(commit->object.sha1));
}
- commit->object.flags |= TREECHANGE;
+ if (tree_changed)
+ commit->object.flags |= TREECHANGE;
}
static void add_parents_to_list(struct rev_info *revs, struct commit *commit, struct commit_list **list)
* simplify the commit history and find the parent
* that has no differences in the path set if one exists.
*/
- if (revs->paths)
- try_to_simplify_commit(revs, commit);
+ if (revs->prune_fn)
+ revs->prune_fn(revs, commit);
parent = commit->parents;
while (parent) {
struct commit_list *newlist = NULL;
struct commit_list **p = &newlist;
- if (revs->paths)
- diff_tree_setup_paths(revs->paths);
-
while (list) {
struct commit_list *entry = list;
struct commit *commit = list->item;
continue;
p = &commit_list_insert(commit, p)->next;
}
+ if (revs->boundary) {
+ list = newlist;
+ while (list) {
+ struct commit *commit = list->item;
+ struct object *obj = &commit->object;
+ struct commit_list *parent = commit->parents;
+ if (obj->flags & (UNINTERESTING|BOUNDARY)) {
+ list = list->next;
+ continue;
+ }
+ while (parent) {
+ struct commit *pcommit = parent->item;
+ parent = parent->next;
+ if (!(pcommit->object.flags & UNINTERESTING))
+ continue;
+ pcommit->object.flags |= BOUNDARY;
+ p = &commit_list_insert(pcommit, p)->next;
+ }
+ list = list->next;
+ }
+ }
revs->commits = newlist;
}
for_each_ref(handle_one_ref);
}
+void init_revisions(struct rev_info *revs)
+{
+ memset(revs, 0, sizeof(*revs));
+ revs->lifo = 1;
+ revs->dense = 1;
+ revs->prefix = setup_git_directory();
+ revs->max_age = -1;
+ revs->min_age = -1;
+ revs->max_count = -1;
+
+ revs->prune_fn = NULL;
+ revs->prune_data = NULL;
+
+ revs->topo_setter = topo_sort_default_setter;
+ revs->topo_getter = topo_sort_default_getter;
+}
+
/*
* Parse revision information, filling in the "rev_info" structure,
* and removing the used arguments from the argument list.
const char **unrecognized = argv + 1;
int left = 1;
- memset(revs, 0, sizeof(*revs));
- revs->lifo = 1;
- revs->dense = 1;
- revs->prefix = setup_git_directory();
- revs->max_age = -1;
- revs->min_age = -1;
- revs->max_count = -1;
+ init_revisions(revs);
/* First, search for "--" */
seen_dashdash = 0;
continue;
argv[i] = NULL;
argc = i;
- revs->paths = get_pathspec(revs->prefix, argv + i + 1);
+ revs->prune_data = get_pathspec(revs->prefix, argv + i + 1);
seen_dashdash = 1;
break;
}
revs->max_count = atoi(arg + 12);
continue;
}
+ /* accept -<digit>, like traditilnal "head" */
+ if ((*arg == '-') && isdigit(arg[1])) {
+ revs->max_count = atoi(arg + 1);
+ continue;
+ }
+ if (!strcmp(arg, "-n")) {
+ if (argc <= i + 1)
+ die("-n requires an argument");
+ revs->max_count = atoi(argv[++i]);
+ continue;
+ }
+ if (!strncmp(arg,"-n",2)) {
+ revs->max_count = atoi(arg + 2);
+ continue;
+ }
if (!strncmp(arg, "--max-age=", 10)) {
revs->max_age = atoi(arg + 10);
revs->limited = 1;
revs->limited = 1;
continue;
}
+ if (!strncmp(arg, "--since=", 8)) {
+ revs->max_age = approxidate(arg + 8);
+ revs->limited = 1;
+ continue;
+ }
+ if (!strncmp(arg, "--after=", 8)) {
+ revs->max_age = approxidate(arg + 8);
+ revs->limited = 1;
+ continue;
+ }
+ if (!strncmp(arg, "--before=", 9)) {
+ revs->min_age = approxidate(arg + 9);
+ revs->limited = 1;
+ continue;
+ }
+ if (!strncmp(arg, "--until=", 8)) {
+ revs->min_age = approxidate(arg + 8);
+ revs->limited = 1;
+ continue;
+ }
if (!strcmp(arg, "--all")) {
handle_all(revs, flags);
continue;
revs->remove_empty_trees = 1;
continue;
}
- if (!strncmp(arg, "--no-merges", 11)) {
+ if (!strcmp(arg, "--no-merges")) {
revs->no_merges = 1;
continue;
}
+ if (!strcmp(arg, "--boundary")) {
+ revs->boundary = 1;
+ continue;
+ }
if (!strcmp(arg, "--objects")) {
revs->tag_objects = 1;
revs->tree_objects = 1;
dotdot = strstr(arg, "..");
if (dotdot) {
unsigned char from_sha1[20];
- char *next = dotdot + 2;
+ const char *next = dotdot + 2;
+ const char *this = arg;
*dotdot = 0;
if (!*next)
next = "HEAD";
- if (!get_sha1(arg, from_sha1) && !get_sha1(next, sha1)) {
+ if (dotdot == arg)
+ this = "HEAD";
+ if (!get_sha1(this, from_sha1) &&
+ !get_sha1(next, sha1)) {
struct commit *exclude;
struct commit *include;
- exclude = get_commit_reference(revs, arg, from_sha1, flags ^ UNINTERESTING);
+ exclude = get_commit_reference(revs, this, from_sha1, flags ^ UNINTERESTING);
include = get_commit_reference(revs, next, sha1, flags);
if (!exclude || !include)
die("Invalid revision range %s..%s", arg, next);
/* If we didn't have a "--", all filenames must exist */
for (j = i; j < argc; j++) {
if (lstat(argv[j], &st) < 0)
- die("'%s': %s", arg, strerror(errno));
+ die("'%s': %s", argv[j], strerror(errno));
}
- revs->paths = get_pathspec(revs->prefix, argv + i);
+ revs->prune_data = get_pathspec(revs->prefix, argv + i);
break;
}
commit = get_commit_reference(revs, arg, sha1, flags ^ local_flags);
commit = get_commit_reference(revs, def, sha1, 0);
add_one_commit(commit, revs);
}
- if (revs->paths)
+
+ if (revs->prune_data) {
+ diff_tree_setup_paths(revs->prune_data);
+ revs->prune_fn = try_to_simplify_commit;
revs->limited = 1;
+ }
+
return left;
}
if (revs->limited)
limit_list(revs);
if (revs->topo_order)
- sort_in_topological_order(&revs->commits, revs->lifo);
+ sort_in_topological_order_fn(&revs->commits, revs->lifo,
+ revs->topo_setter,
+ revs->topo_getter);
}
static int rewrite_one(struct commit **pp)
struct commit *get_revision(struct rev_info *revs)
{
struct commit_list *list = revs->commits;
- struct commit *commit;
if (!list)
return NULL;
/* Check the max_count ... */
- commit = list->item;
switch (revs->max_count) {
case -1:
break;
}
do {
- commit = pop_most_recent_commit(&revs->commits, SEEN);
- if (commit->object.flags & (UNINTERESTING|SHOWN))
- continue;
+ struct commit *commit = revs->commits->item;
+
+ if (commit->object.flags & SHOWN)
+ goto next;
+ if (!(commit->object.flags & BOUNDARY) &&
+ (commit->object.flags & UNINTERESTING))
+ goto next;
if (revs->min_age != -1 && (commit->date > revs->min_age))
- continue;
+ goto next;
if (revs->max_age != -1 && (commit->date < revs->max_age))
return NULL;
- if (revs->no_merges && commit->parents && commit->parents->next)
- continue;
- if (revs->paths && revs->dense) {
+ if (revs->no_merges &&
+ commit->parents && commit->parents->next)
+ goto next;
+ if (revs->prune_fn && revs->dense) {
if (!(commit->object.flags & TREECHANGE))
- continue;
+ goto next;
rewrite_parents(commit);
}
+ /* More to go? */
+ if (revs->max_count) {
+ if (commit->object.flags & BOUNDARY) {
+ /* this is already uninteresting,
+ * so there is no point popping its
+ * parents into the list.
+ */
+ struct commit_list *it = revs->commits;
+ revs->commits = it->next;
+ free(it);
+ }
+ else
+ pop_most_recent_commit(&revs->commits, SEEN);
+ }
commit->object.flags |= SHOWN;
return commit;
+next:
+ pop_most_recent_commit(&revs->commits, SEEN);
} while (revs->commits);
return NULL;
}