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-rw-r--r--revision.c257
1 files changed, 163 insertions, 94 deletions
diff --git a/revision.c b/revision.c
index 76499dcf38..486393cb08 100644
--- a/revision.c
+++ b/revision.c
@@ -62,8 +62,7 @@ void mark_tree_uninteresting(struct tree *tree)
if (parse_tree(tree) < 0)
die("bad tree %s", sha1_to_hex(obj->sha1));
- desc.buf = tree->buffer;
- desc.size = tree->size;
+ init_tree_desc(&desc, tree->buffer, tree->size);
while (tree_entry(&desc, &entry)) {
if (S_ISDIR(entry.mode))
mark_tree_uninteresting(lookup_tree(entry.sha1));
@@ -213,6 +212,13 @@ static int everybody_uninteresting(struct commit_list *orig)
return 1;
}
+/*
+ * The goal is to get REV_TREE_NEW as the result only if the
+ * diff consists of all '+' (and no other changes), and
+ * REV_TREE_DIFFERENT otherwise (of course if the trees are
+ * the same we want REV_TREE_SAME). That means that once we
+ * get to REV_TREE_DIFFERENT, we do not have to look any further.
+ */
static int tree_difference = REV_TREE_SAME;
static void file_add_remove(struct diff_options *options,
@@ -236,6 +242,8 @@ static void file_add_remove(struct diff_options *options,
diff = REV_TREE_NEW;
}
tree_difference = diff;
+ if (tree_difference == REV_TREE_DIFFERENT)
+ options->has_changes = 1;
}
static void file_change(struct diff_options *options,
@@ -245,6 +253,7 @@ static void file_change(struct diff_options *options,
const char *base, const char *path)
{
tree_difference = REV_TREE_DIFFERENT;
+ options->has_changes = 1;
}
int rev_compare_tree(struct rev_info *revs, struct tree *t1, struct tree *t2)
@@ -254,6 +263,7 @@ int rev_compare_tree(struct rev_info *revs, struct tree *t1, struct tree *t2)
if (!t2)
return REV_TREE_DIFFERENT;
tree_difference = REV_TREE_SAME;
+ revs->pruning.has_changes = 0;
if (diff_tree_sha1(t1->object.sha1, t2->object.sha1, "",
&revs->pruning) < 0)
return REV_TREE_DIFFERENT;
@@ -264,24 +274,24 @@ int rev_same_tree_as_empty(struct rev_info *revs, struct tree *t1)
{
int retval;
void *tree;
+ unsigned long size;
struct tree_desc empty, real;
if (!t1)
return 0;
- tree = read_object_with_reference(t1->object.sha1, tree_type, &real.size, NULL);
+ tree = read_object_with_reference(t1->object.sha1, tree_type, &size, NULL);
if (!tree)
return 0;
- real.buf = tree;
-
- empty.buf = "";
- empty.size = 0;
+ init_tree_desc(&real, tree, size);
+ init_tree_desc(&empty, "", 0);
- tree_difference = 0;
+ tree_difference = REV_TREE_SAME;
+ revs->pruning.has_changes = 0;
retval = diff_tree(&empty, &real, "", &revs->pruning);
free(tree);
- return retval >= 0 && !tree_difference;
+ return retval >= 0 && (tree_difference == REV_TREE_SAME);
}
static void try_to_simplify_commit(struct rev_info *revs, struct commit *commit)
@@ -350,6 +360,7 @@ static void add_parents_to_list(struct rev_info *revs, struct commit *commit, st
{
struct commit_list *parent = commit->parents;
unsigned left_flag;
+ int add, rest;
if (commit->object.flags & ADDED)
return;
@@ -395,18 +406,19 @@ static void add_parents_to_list(struct rev_info *revs, struct commit *commit, st
return;
left_flag = (commit->object.flags & SYMMETRIC_LEFT);
- parent = commit->parents;
- while (parent) {
+
+ rest = !revs->first_parent_only;
+ for (parent = commit->parents, add = 1; parent; add = rest) {
struct commit *p = parent->item;
parent = parent->next;
-
parse_commit(p);
p->object.flags |= left_flag;
if (p->object.flags & SEEN)
continue;
p->object.flags |= SEEN;
- insert_by_date(p, list);
+ if (add)
+ insert_by_date(p, list);
}
}
@@ -437,36 +449,6 @@ static void limit_list(struct rev_info *revs)
continue;
p = &commit_list_insert(commit, p)->next;
}
- if (revs->boundary) {
- /* mark the ones that are on the result list first */
- for (list = newlist; list; list = list->next) {
- struct commit *commit = list->item;
- commit->object.flags |= TMP_MARK;
- }
- for (list = newlist; list; list = list->next) {
- struct commit *commit = list->item;
- struct object *obj = &commit->object;
- struct commit_list *parent;
- if (obj->flags & UNINTERESTING)
- continue;
- for (parent = commit->parents;
- parent;
- parent = parent->next) {
- struct commit *pcommit = parent->item;
- if (!(pcommit->object.flags & UNINTERESTING))
- continue;
- pcommit->object.flags |= BOUNDARY;
- if (pcommit->object.flags & TMP_MARK)
- continue;
- pcommit->object.flags |= TMP_MARK;
- p = &commit_list_insert(pcommit, p)->next;
- }
- }
- for (list = newlist; list; list = list->next) {
- struct commit *commit = list->item;
- commit->object.flags &= ~TMP_MARK;
- }
- }
revs->commits = newlist;
}
@@ -482,7 +464,7 @@ static int handle_one_ref(const char *path, const unsigned char *sha1, int flag,
struct all_refs_cb *cb = cb_data;
struct object *object = get_reference(cb->all_revs, path, sha1,
cb->all_flags);
- add_pending_object(cb->all_revs, object, "");
+ add_pending_object(cb->all_revs, object, path);
return 0;
}
@@ -504,7 +486,7 @@ static void handle_one_reflog_commit(unsigned char *sha1, void *cb_data)
add_pending_object(cb->all_revs, o, "");
}
else if (!cb->warned_bad_reflog) {
- warn("reflog of '%s' references pruned commits",
+ warning("reflog of '%s' references pruned commits",
cb->name_for_errormsg);
cb->warned_bad_reflog = 1;
}
@@ -575,6 +557,7 @@ void init_revisions(struct rev_info *revs, const char *prefix)
revs->ignore_merges = 1;
revs->simplify_history = 1;
revs->pruning.recursive = 1;
+ revs->pruning.quiet = 1;
revs->pruning.add_remove = file_add_remove;
revs->pruning.change = file_change;
revs->lifo = 1;
@@ -815,11 +798,11 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
const char *arg = argv[i];
if (*arg == '-') {
int opts;
- if (!strncmp(arg, "--max-count=", 12)) {
+ if (!prefixcmp(arg, "--max-count=")) {
revs->max_count = atoi(arg + 12);
continue;
}
- if (!strncmp(arg, "--skip=", 7)) {
+ if (!prefixcmp(arg, "--skip=")) {
revs->skip_count = atoi(arg + 7);
continue;
}
@@ -834,31 +817,31 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
revs->max_count = atoi(argv[++i]);
continue;
}
- if (!strncmp(arg,"-n",2)) {
+ if (!prefixcmp(arg, "-n")) {
revs->max_count = atoi(arg + 2);
continue;
}
- if (!strncmp(arg, "--max-age=", 10)) {
+ if (!prefixcmp(arg, "--max-age=")) {
revs->max_age = atoi(arg + 10);
continue;
}
- if (!strncmp(arg, "--since=", 8)) {
+ if (!prefixcmp(arg, "--since=")) {
revs->max_age = approxidate(arg + 8);
continue;
}
- if (!strncmp(arg, "--after=", 8)) {
+ if (!prefixcmp(arg, "--after=")) {
revs->max_age = approxidate(arg + 8);
continue;
}
- if (!strncmp(arg, "--min-age=", 10)) {
+ if (!prefixcmp(arg, "--min-age=")) {
revs->min_age = atoi(arg + 10);
continue;
}
- if (!strncmp(arg, "--before=", 9)) {
+ if (!prefixcmp(arg, "--before=")) {
revs->min_age = approxidate(arg + 9);
continue;
}
- if (!strncmp(arg, "--until=", 8)) {
+ if (!prefixcmp(arg, "--until=")) {
revs->min_age = approxidate(arg + 8);
continue;
}
@@ -866,6 +849,10 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
handle_all(revs, flags);
continue;
}
+ if (!strcmp(arg, "--first-parent")) {
+ revs->first_parent_only = 1;
+ continue;
+ }
if (!strcmp(arg, "--reflog")) {
handle_reflog(revs, flags);
continue;
@@ -946,7 +933,7 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
revs->num_ignore_packed = 0;
continue;
}
- if (!strncmp(arg, "--unpacked=", 11)) {
+ if (!prefixcmp(arg, "--unpacked=")) {
revs->unpacked = 1;
add_ignore_packed(revs, arg+11);
continue;
@@ -982,7 +969,7 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
revs->verbose_header = 1;
continue;
}
- if (!strncmp(arg, "--pretty", 8)) {
+ if (!prefixcmp(arg, "--pretty")) {
revs->verbose_header = 1;
revs->commit_format = get_commit_format(arg+8);
continue;
@@ -1007,7 +994,7 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
revs->abbrev = DEFAULT_ABBREV;
continue;
}
- if (!strncmp(arg, "--abbrev=", 9)) {
+ if (!prefixcmp(arg, "--abbrev=")) {
revs->abbrev = strtoul(arg + 9, NULL, 10);
if (revs->abbrev < MINIMUM_ABBREV)
revs->abbrev = MINIMUM_ABBREV;
@@ -1036,15 +1023,15 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
/*
* Grepping the commit log
*/
- if (!strncmp(arg, "--author=", 9)) {
+ if (!prefixcmp(arg, "--author=")) {
add_header_grep(revs, "author", arg+9);
continue;
}
- if (!strncmp(arg, "--committer=", 12)) {
+ if (!prefixcmp(arg, "--committer=")) {
add_header_grep(revs, "committer", arg+12);
continue;
}
- if (!strncmp(arg, "--grep=", 7)) {
+ if (!prefixcmp(arg, "--grep=")) {
add_message_grep(revs, arg+7);
continue;
}
@@ -1052,14 +1039,18 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
all_match = 1;
continue;
}
- if (!strncmp(arg, "--encoding=", 11)) {
+ if (!prefixcmp(arg, "--encoding=")) {
arg += 11;
if (strcmp(arg, "none"))
- git_log_output_encoding = strdup(arg);
+ git_log_output_encoding = xstrdup(arg);
else
git_log_output_encoding = "";
continue;
}
+ if (!strcmp(arg, "--reverse")) {
+ revs->reverse ^= 1;
+ continue;
+ }
opts = diff_opt_parse(&revs->diffopt, argv+i, argc-i);
if (opts > 0) {
@@ -1189,17 +1180,6 @@ static void rewrite_parents(struct rev_info *revs, struct commit *commit)
}
}
-static void mark_boundary_to_show(struct commit *commit)
-{
- struct commit_list *p = commit->parents;
- while (p) {
- commit = p->item;
- p = p->next;
- if (commit->object.flags & BOUNDARY)
- commit->object.flags |= BOUNDARY_SHOW;
- }
-}
-
static int commit_match(struct commit *commit, struct rev_info *opt)
{
if (!opt->grep_filter)
@@ -1242,18 +1222,6 @@ static struct commit *get_revision_1(struct rev_info *revs)
revs->ignore_packed))
continue;
- /* We want to show boundary commits only when their
- * children are shown. When path-limiter is in effect,
- * rewrite_parents() drops some commits from getting shown,
- * and there is no point showing boundary parents that
- * are not shown. After rewrite_parents() rewrites the
- * parents of a commit that is shown, we mark the boundary
- * parents with BOUNDARY_SHOW.
- */
- if (commit->object.flags & BOUNDARY_SHOW) {
- commit->object.flags |= SHOWN;
- return commit;
- }
if (commit->object.flags & UNINTERESTING)
continue;
if (revs->min_age != -1 && (commit->date > revs->min_age))
@@ -1276,35 +1244,136 @@ static struct commit *get_revision_1(struct rev_info *revs)
if (revs->parents)
rewrite_parents(revs, commit);
}
- if (revs->boundary)
- mark_boundary_to_show(commit);
- commit->object.flags |= SHOWN;
return commit;
} while (revs->commits);
return NULL;
}
+static void gc_boundary(struct object_array *array)
+{
+ unsigned nr = array->nr;
+ unsigned alloc = array->alloc;
+ struct object_array_entry *objects = array->objects;
+
+ if (alloc <= nr) {
+ unsigned i, j;
+ for (i = j = 0; i < nr; i++) {
+ if (objects[i].item->flags & SHOWN)
+ continue;
+ if (i != j)
+ objects[j] = objects[i];
+ j++;
+ }
+ for (i = j; i < nr; i++)
+ objects[i].item = NULL;
+ array->nr = j;
+ }
+}
+
struct commit *get_revision(struct rev_info *revs)
{
struct commit *c = NULL;
+ struct commit_list *l;
+
+ if (revs->boundary == 2) {
+ unsigned i;
+ struct object_array *array = &revs->boundary_commits;
+ struct object_array_entry *objects = array->objects;
+ for (i = 0; i < array->nr; i++) {
+ c = (struct commit *)(objects[i].item);
+ if (!c)
+ continue;
+ if (!(c->object.flags & CHILD_SHOWN))
+ continue;
+ if (!(c->object.flags & SHOWN))
+ break;
+ }
+ if (array->nr <= i)
+ return NULL;
+
+ c->object.flags |= SHOWN | BOUNDARY;
+ return c;
+ }
+
+ if (revs->reverse) {
+ int limit = -1;
+
+ if (0 <= revs->max_count) {
+ limit = revs->max_count;
+ if (0 < revs->skip_count)
+ limit += revs->skip_count;
+ }
+ l = NULL;
+ while ((c = get_revision_1(revs))) {
+ commit_list_insert(c, &l);
+ if ((0 < limit) && !--limit)
+ break;
+ }
+ revs->commits = l;
+ revs->reverse = 0;
+ revs->max_count = -1;
+ c = NULL;
+ }
- if (0 < revs->skip_count) {
- while ((c = get_revision_1(revs)) != NULL) {
- if (revs->skip_count-- <= 0)
+ /*
+ * Now pick up what they want to give us
+ */
+ c = get_revision_1(revs);
+ if (c) {
+ while (0 < revs->skip_count) {
+ revs->skip_count--;
+ c = get_revision_1(revs);
+ if (!c)
break;
}
}
- /* Check the max_count ... */
+ /*
+ * Check the max_count.
+ */
switch (revs->max_count) {
case -1:
break;
case 0:
- return NULL;
+ c = NULL;
+ break;
default:
revs->max_count--;
}
+
if (c)
+ c->object.flags |= SHOWN;
+
+ if (!revs->boundary) {
return c;
- return get_revision_1(revs);
+ }
+
+ if (!c) {
+ /*
+ * get_revision_1() runs out the commits, and
+ * we are done computing the boundaries.
+ * switch to boundary commits output mode.
+ */
+ revs->boundary = 2;
+ return get_revision(revs);
+ }
+
+ /*
+ * boundary commits are the commits that are parents of the
+ * ones we got from get_revision_1() but they themselves are
+ * not returned from get_revision_1(). Before returning
+ * 'c', we need to mark its parents that they could be boundaries.
+ */
+
+ for (l = c->parents; l; l = l->next) {
+ struct object *p;
+ p = &(l->item->object);
+ if (p->flags & (CHILD_SHOWN | SHOWN))
+ continue;
+ p->flags |= CHILD_SHOWN;
+ gc_boundary(&revs->boundary_commits);
+ add_object_array(p, NULL, &revs->boundary_commits);
+ }
+
+ return c;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-02 05:48:12 +0300