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a125a22334
git/revision.c
Thomas Gummerer a125a22334 read-cache: fix reading the shared index for other repos 
read_index_from() takes a path argument for the location of the index
file.  For reading the shared index in split index mode however it just
ignores that path argument, and reads it from the gitdir of the current
repository.

This works as long as an index in the_repository is read.  Once that
changes, such as when we read the index of a submodule, or of a
different working tree than the current one, the gitdir of
the_repository will no longer contain the appropriate shared index,
and git will fail to read it.

For example t3007-ls-files-recurse-submodules.sh was broken with
GIT_TEST_SPLIT_INDEX set in 188dce131f ("ls-files: use repository
object", 2017-06-22), and t7814-grep-recurse-submodules.sh was also
broken in a similar manner, probably by introducing struct repository
there, although I didn't track down the exact commit for that.

be489d02d2 ("revision.c: --indexed-objects add objects from all
worktrees", 2017-08-23) breaks with split index mode in a similar
manner, not erroring out when it can't read the index, but instead
carrying on with pruning, without taking the index of the worktree into
account.

Fix this by passing an additional gitdir parameter to read_index_from,
to indicate where it should look for and read the shared index from.

read_cache_from() defaults to using the gitdir of the_repository.  As it
is mostly a convenience macro, having to pass get_git_dir() for every
call seems overkill, and if necessary users can have more control by
using read_index_from().

Helped-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-19 10:36:34 -08:00

3448 lines
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#include "cache.h"
#include "tag.h"
#include "blob.h"
#include "tree.h"
#include "commit.h"
#include "diff.h"
#include "refs.h"
#include "revision.h"
#include "graph.h"
#include "grep.h"
#include "reflog-walk.h"
#include "patch-ids.h"
#include "decorate.h"
#include "log-tree.h"
#include "string-list.h"
#include "line-log.h"
#include "mailmap.h"
#include "commit-slab.h"
#include "dir.h"
#include "cache-tree.h"
#include "bisect.h"
#include "packfile.h"
#include "worktree.h"
#include "argv-array.h"
volatile show_early_output_fn_t show_early_output;
static const char *term_bad;
static const char *term_good;
void show_object_with_name(FILE *out, struct object *obj, const char *name)
{
const char *p;
fprintf(out, "%s ", oid_to_hex(&obj->oid));
for (p = name; *p && *p != '\n'; p++)
fputc(*p, out);
fputc('\n', out);
}
static void mark_blob_uninteresting(struct blob *blob)
{
if (!blob)
return;
if (blob->object.flags & UNINTERESTING)
return;
blob->object.flags |= UNINTERESTING;
}
static void mark_tree_contents_uninteresting(struct tree *tree)
{
struct tree_desc desc;
struct name_entry entry;
struct object *obj = &tree->object;
if (!has_object_file(&obj->oid))
return;
if (parse_tree(tree) < 0)
die("bad tree %s", oid_to_hex(&obj->oid));
init_tree_desc(&desc, tree->buffer, tree->size);
while (tree_entry(&desc, &entry)) {
switch (object_type(entry.mode)) {
case OBJ_TREE:
mark_tree_uninteresting(lookup_tree(entry.oid));
break;
case OBJ_BLOB:
mark_blob_uninteresting(lookup_blob(entry.oid));
break;
default:
/* Subproject commit - not in this repository */
break;
}
}
/*
* We don't care about the tree any more
* after it has been marked uninteresting.
*/
free_tree_buffer(tree);
}
void mark_tree_uninteresting(struct tree *tree)
{
struct object *obj;
if (!tree)
return;
obj = &tree->object;
if (obj->flags & UNINTERESTING)
return;
obj->flags |= UNINTERESTING;
mark_tree_contents_uninteresting(tree);
}
void mark_parents_uninteresting(struct commit *commit)
{
struct commit_list *parents = NULL, *l;
for (l = commit->parents; l; l = l->next)
commit_list_insert(l->item, &parents);
while (parents) {
struct commit *commit = pop_commit(&parents);
while (commit) {
/*
* A missing commit is ok iff its parent is marked
* uninteresting.
*
* We just mark such a thing parsed, so that when
* it is popped next time around, we won't be trying
* to parse it and get an error.
*/
if (!has_object_file(&commit->object.oid))
commit->object.parsed = 1;
if (commit->object.flags & UNINTERESTING)
break;
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)
break;
for (l = commit->parents->next; l; l = l->next)
commit_list_insert(l->item, &parents);
commit = commit->parents->item;
}
}
}
static void add_pending_object_with_path(struct rev_info *revs,
struct object *obj,
const char *name, unsigned mode,
const char *path)
{
if (!obj)
return;
if (revs->no_walk && (obj->flags & UNINTERESTING))
revs->no_walk = 0;
if (revs->reflog_info && obj->type == OBJ_COMMIT) {
struct strbuf buf = STRBUF_INIT;
int len = interpret_branch_name(name, 0, &buf, 0);
if (0 < len && name[len] && buf.len)
strbuf_addstr(&buf, name + len);
add_reflog_for_walk(revs->reflog_info,
(struct commit *)obj,
buf.buf[0] ? buf.buf: name);
strbuf_release(&buf);
return; /* do not add the commit itself */
}
add_object_array_with_path(obj, name, &revs->pending, mode, path);
}
static void add_pending_object_with_mode(struct rev_info *revs,
struct object *obj,
const char *name, unsigned mode)
{
add_pending_object_with_path(revs, obj, name, mode, NULL);
}
void add_pending_object(struct rev_info *revs,
struct object *obj, const char *name)
{
add_pending_object_with_mode(revs, obj, name, S_IFINVALID);
}
void add_head_to_pending(struct rev_info *revs)
{
struct object_id oid;
struct object *obj;
if (get_oid("HEAD", &oid))
return;
obj = parse_object(&oid);
if (!obj)
return;
add_pending_object(revs, obj, "HEAD");
}
static struct object *get_reference(struct rev_info *revs, const char *name,
const struct object_id *oid,
unsigned int flags)
{
struct object *object;
object = parse_object(oid);
if (!object) {
if (revs->ignore_missing)
return object;
die("bad object %s", name);
}
object->flags |= flags;
return object;
}
void add_pending_oid(struct rev_info *revs, const char *name,
const struct object_id *oid, unsigned int flags)
{
struct object *object = get_reference(revs, name, oid, flags);
add_pending_object(revs, object, name);
}
static struct commit *handle_commit(struct rev_info *revs,
struct object_array_entry *entry)
{
struct object *object = entry->item;
const char *name = entry->name;
const char *path = entry->path;
unsigned int mode = entry->mode;
unsigned long flags = object->flags;
/*
* Tag object? Look what it points to..
*/
while (object->type == OBJ_TAG) {
struct tag *tag = (struct tag *) object;
if (revs->tag_objects && !(flags & UNINTERESTING))
add_pending_object(revs, object, tag->tag);
if (!tag->tagged)
die("bad tag");
object = parse_object(&tag->tagged->oid);
if (!object) {
if (revs->ignore_missing_links || (flags & UNINTERESTING))
return NULL;
die("bad object %s", oid_to_hex(&tag->tagged->oid));
}
object->flags |= flags;
/*
* We'll handle the tagged object by looping or dropping
* through to the non-tag handlers below. Do not
* propagate path data from the tag's pending entry.
*/
path = NULL;
mode = 0;
}
/*
* Commit object? Just return it, we'll do all the complex
* reachability crud.
*/
if (object->type == OBJ_COMMIT) {
struct commit *commit = (struct commit *)object;
if (parse_commit(commit) < 0)
die("unable to parse commit %s", name);
if (flags & UNINTERESTING) {
mark_parents_uninteresting(commit);
revs->limited = 1;
}
if (revs->show_source && !commit->util)
commit->util = xstrdup(name);
return commit;
}
/*
* Tree object? Either mark it uninteresting, or add it
* to the list of objects to look at later..
*/
if (object->type == OBJ_TREE) {
struct tree *tree = (struct tree *)object;
if (!revs->tree_objects)
return NULL;
if (flags & UNINTERESTING) {
mark_tree_contents_uninteresting(tree);
return NULL;
}
add_pending_object_with_path(revs, object, name, mode, path);
return NULL;
}
/*
* Blob object? You know the drill by now..
*/
if (object->type == OBJ_BLOB) {
if (!revs->blob_objects)
return NULL;
if (flags & UNINTERESTING)
return NULL;
add_pending_object_with_path(revs, object, name, mode, path);
return NULL;
}
die("%s is unknown object", name);
}
static int everybody_uninteresting(struct commit_list *orig,
struct commit **interesting_cache)
{
struct commit_list *list = orig;
if (*interesting_cache) {
struct commit *commit = *interesting_cache;
if (!(commit->object.flags & UNINTERESTING))
return 0;
}
while (list) {
struct commit *commit = list->item;
list = list->next;
if (commit->object.flags & UNINTERESTING)
continue;
*interesting_cache = commit;
return 0;
}
return 1;
}
/*
* A definition of "relevant" commit that we can use to simplify limited graphs
* by eliminating side branches.
*
* A "relevant" commit is one that is !UNINTERESTING (ie we are including it
* in our list), or that is a specified BOTTOM commit. Then after computing
* a limited list, during processing we can generally ignore boundary merges
* coming from outside the graph, (ie from irrelevant parents), and treat
* those merges as if they were single-parent. TREESAME is defined to consider
* only relevant parents, if any. If we are TREESAME to our on-graph parents,
* we don't care if we were !TREESAME to non-graph parents.
*
* Treating bottom commits as relevant ensures that a limited graph's
* connection to the actual bottom commit is not viewed as a side branch, but
* treated as part of the graph. For example:
*
* ....Z...A---X---o---o---B
* . /
* W---Y
*
* When computing "A..B", the A-X connection is at least as important as
* Y-X, despite A being flagged UNINTERESTING.
*
* And when computing --ancestry-path "A..B", the A-X connection is more
* important than Y-X, despite both A and Y being flagged UNINTERESTING.
*/
static inline int relevant_commit(struct commit *commit)
{
return (commit->object.flags & (UNINTERESTING | BOTTOM)) != UNINTERESTING;
}
/*
* Return a single relevant commit from a parent list. If we are a TREESAME
* commit, and this selects one of our parents, then we can safely simplify to
* that parent.
*/
static struct commit *one_relevant_parent(const struct rev_info *revs,
struct commit_list *orig)
{
struct commit_list *list = orig;
struct commit *relevant = NULL;
if (!orig)
return NULL;
/*
* For 1-parent commits, or if first-parent-only, then return that
* first parent (even if not "relevant" by the above definition).
* TREESAME will have been set purely on that parent.
*/
if (revs->first_parent_only || !orig->next)
return orig->item;
/*
* For multi-parent commits, identify a sole relevant parent, if any.
* If we have only one relevant parent, then TREESAME will be set purely
* with regard to that parent, and we can simplify accordingly.
*
* If we have more than one relevant parent, or no relevant parents
* (and multiple irrelevant ones), then we can't select a parent here
* and return NULL.
*/
while (list) {
struct commit *commit = list->item;
list = list->next;
if (relevant_commit(commit)) {
if (relevant)
return NULL;
relevant = commit;
}
}
return relevant;
}
/*
* The goal is to get REV_TREE_NEW as the result only if the
* diff consists of all '+' (and no other changes), REV_TREE_OLD
* if the whole diff is removal of old data, and otherwise
* REV_TREE_DIFFERENT (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,
int addremove, unsigned mode,
const struct object_id *oid,
int oid_valid,
const char *fullpath, unsigned dirty_submodule)
{
int diff = addremove == '+' ? REV_TREE_NEW : REV_TREE_OLD;
tree_difference |= diff;
if (tree_difference == REV_TREE_DIFFERENT)
DIFF_OPT_SET(options, HAS_CHANGES);
}
static void file_change(struct diff_options *options,
unsigned old_mode, unsigned new_mode,
const struct object_id *old_oid,
const struct object_id *new_oid,
int old_oid_valid, int new_oid_valid,
const char *fullpath,
unsigned old_dirty_submodule, unsigned new_dirty_submodule)
{
tree_difference = REV_TREE_DIFFERENT;
DIFF_OPT_SET(options, HAS_CHANGES);
}
static int rev_compare_tree(struct rev_info *revs,
struct commit *parent, struct commit *commit)
{
struct tree *t1 = parent->tree;
struct tree *t2 = commit->tree;
if (!t1)
return REV_TREE_NEW;
if (!t2)
return REV_TREE_OLD;
if (revs->simplify_by_decoration) {
/*
* If we are simplifying by decoration, then the commit
* is worth showing if it has a tag pointing at it.
*/
if (get_name_decoration(&commit->object))
return REV_TREE_DIFFERENT;
/*
* A commit that is not pointed by a tag is uninteresting
* if we are not limited by path. This means that you will
* see the usual "commits that touch the paths" plus any
* tagged commit by specifying both --simplify-by-decoration
* and pathspec.
*/
if (!revs->prune_data.nr)
return REV_TREE_SAME;
}
tree_difference = REV_TREE_SAME;
DIFF_OPT_CLR(&revs->pruning, HAS_CHANGES);
if (diff_tree_oid(&t1->object.oid, &t2->object.oid, "",
&revs->pruning) < 0)
return REV_TREE_DIFFERENT;
return tree_difference;
}
static int rev_same_tree_as_empty(struct rev_info *revs, struct commit *commit)
{
int retval;
struct tree *t1 = commit->tree;
if (!t1)
return 0;
tree_difference = REV_TREE_SAME;
DIFF_OPT_CLR(&revs->pruning, HAS_CHANGES);
retval = diff_tree_oid(NULL, &t1->object.oid, "", &revs->pruning);
return retval >= 0 && (tree_difference == REV_TREE_SAME);
}
struct treesame_state {
unsigned int nparents;
unsigned char treesame[FLEX_ARRAY];
};
static struct treesame_state *initialise_treesame(struct rev_info *revs, struct commit *commit)
{
unsigned n = commit_list_count(commit->parents);
struct treesame_state *st = xcalloc(1, st_add(sizeof(*st), n));
st->nparents = n;
add_decoration(&revs->treesame, &commit->object, st);
return st;
}
/*
* Must be called immediately after removing the nth_parent from a commit's
* parent list, if we are maintaining the per-parent treesame[] decoration.
* This does not recalculate the master TREESAME flag - update_treesame()
* should be called to update it after a sequence of treesame[] modifications
* that may have affected it.
*/
static int compact_treesame(struct rev_info *revs, struct commit *commit, unsigned nth_parent)
{
struct treesame_state *st;
int old_same;
if (!commit->parents) {
/*
* Have just removed the only parent from a non-merge.
* Different handling, as we lack decoration.
*/
if (nth_parent != 0)
die("compact_treesame %u", nth_parent);
old_same = !!(commit->object.flags & TREESAME);
if (rev_same_tree_as_empty(revs, commit))
commit->object.flags |= TREESAME;
else
commit->object.flags &= ~TREESAME;
return old_same;
}
st = lookup_decoration(&revs->treesame, &commit->object);
if (!st || nth_parent >= st->nparents)
die("compact_treesame %u", nth_parent);
old_same = st->treesame[nth_parent];
memmove(st->treesame + nth_parent,
st->treesame + nth_parent + 1,
st->nparents - nth_parent - 1);
/*
* If we've just become a non-merge commit, update TREESAME
* immediately, and remove the no-longer-needed decoration.
* If still a merge, defer update until update_treesame().
*/
if (--st->nparents == 1) {
if (commit->parents->next)
die("compact_treesame parents mismatch");
if (st->treesame[0] && revs->dense)
commit->object.flags |= TREESAME;
else
commit->object.flags &= ~TREESAME;
free(add_decoration(&revs->treesame, &commit->object, NULL));
}
return old_same;
}
static unsigned update_treesame(struct rev_info *revs, struct commit *commit)
{
if (commit->parents && commit->parents->next) {
unsigned n;
struct treesame_state *st;
struct commit_list *p;
unsigned relevant_parents;
unsigned relevant_change, irrelevant_change;
st = lookup_decoration(&revs->treesame, &commit->object);
if (!st)
die("update_treesame %s", oid_to_hex(&commit->object.oid));
relevant_parents = 0;
relevant_change = irrelevant_change = 0;
for (p = commit->parents, n = 0; p; n++, p = p->next) {
if (relevant_commit(p->item)) {
relevant_change |= !st->treesame[n];
relevant_parents++;
} else
irrelevant_change |= !st->treesame[n];
}
if (relevant_parents ? relevant_change : irrelevant_change)
commit->object.flags &= ~TREESAME;
else
commit->object.flags |= TREESAME;
}
return commit->object.flags & TREESAME;
}
static inline int limiting_can_increase_treesame(const struct rev_info *revs)
{
/*
* TREESAME is irrelevant unless prune && dense;
* if simplify_history is set, we can't have a mixture of TREESAME and
* !TREESAME INTERESTING parents (and we don't have treesame[]
* decoration anyway);
* if first_parent_only is set, then the TREESAME flag is locked
* against the first parent (and again we lack treesame[] decoration).
*/
return revs->prune && revs->dense &&
!revs->simplify_history &&
!revs->first_parent_only;
}
static void try_to_simplify_commit(struct rev_info *revs, struct commit *commit)
{
struct commit_list **pp, *parent;
struct treesame_state *ts = NULL;
int relevant_change = 0, irrelevant_change = 0;
int relevant_parents, nth_parent;
/*
* If we don't do pruning, everything is interesting
*/
if (!revs->prune)
return;
if (!commit->tree)
return;
if (!commit->parents) {
if (rev_same_tree_as_empty(revs, commit))
commit->object.flags |= TREESAME;
return;
}
/*
* Normal non-merge commit? If we don't want to make the
* history dense, we consider it always to be a change..
*/
if (!revs->dense && !commit->parents->next)
return;
for (pp = &commit->parents, nth_parent = 0, relevant_parents = 0;
(parent = *pp) != NULL;
pp = &parent->next, nth_parent++) {
struct commit *p = parent->item;
if (relevant_commit(p))
relevant_parents++;
if (nth_parent == 1) {
/*
* This our second loop iteration - so we now know
* we're dealing with a merge.
*
* Do not compare with later parents when we care only about
* the first parent chain, in order to avoid derailing the
* traversal to follow a side branch that brought everything
* in the path we are limited to by the pathspec.
*/
if (revs->first_parent_only)
break;
/*
* If this will remain a potentially-simplifiable
* merge, remember per-parent treesame if needed.
* Initialise the array with the comparison from our
* first iteration.
*/
if (revs->treesame.name &&
!revs->simplify_history &&
!(commit->object.flags & UNINTERESTING)) {
ts = initialise_treesame(revs, commit);
if (!(irrelevant_change || relevant_change))
ts->treesame[0] = 1;
}
}
if (parse_commit(p) < 0)
die("cannot simplify commit %s (because of %s)",
oid_to_hex(&commit->object.oid),
oid_to_hex(&p->object.oid));
switch (rev_compare_tree(revs, p, commit)) {
case REV_TREE_SAME:
if (!revs->simplify_history || !relevant_commit(p)) {
/* 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.
*/
if (ts)
ts->treesame[nth_parent] = 1;
continue;
}
parent->next = NULL;
commit->parents = parent;
commit->object.flags |= TREESAME;
return;
case REV_TREE_NEW:
if (revs->remove_empty_trees &&
rev_same_tree_as_empty(revs, p)) {
/* 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.
*/
if (parse_commit(p) < 0)
die("cannot simplify commit %s (invalid %s)",
oid_to_hex(&commit->object.oid),
oid_to_hex(&p->object.oid));
p->parents = NULL;
}
/* fallthrough */
case REV_TREE_OLD:
case REV_TREE_DIFFERENT:
if (relevant_commit(p))
relevant_change = 1;
else
irrelevant_change = 1;
continue;
}
die("bad tree compare for commit %s", oid_to_hex(&commit->object.oid));
}
/*
* TREESAME is straightforward for single-parent commits. For merge
* commits, it is most useful to define it so that "irrelevant"
* parents cannot make us !TREESAME - if we have any relevant
* parents, then we only consider TREESAMEness with respect to them,
* allowing irrelevant merges from uninteresting branches to be
* simplified away. Only if we have only irrelevant parents do we
* base TREESAME on them. Note that this logic is replicated in
* update_treesame, which should be kept in sync.
*/
if (relevant_parents ? !relevant_change : !irrelevant_change)
commit->object.flags |= TREESAME;
}
static void commit_list_insert_by_date_cached(struct commit *p, struct commit_list **head,
struct commit_list *cached_base, struct commit_list **cache)
{
struct commit_list *new_entry;
if (cached_base && p->date < cached_base->item->date)
new_entry = commit_list_insert_by_date(p, &cached_base->next);
else
new_entry = commit_list_insert_by_date(p, head);
if (cache && (!*cache || p->date < (*cache)->item->date))
*cache = new_entry;
}
static int add_parents_to_list(struct rev_info *revs, struct commit *commit,
struct commit_list **list, struct commit_list **cache_ptr)
{
struct commit_list *parent = commit->parents;
unsigned left_flag;
struct commit_list *cached_base = cache_ptr ? *cache_ptr : NULL;
if (commit->object.flags & ADDED)
return 0;
commit->object.flags |= ADDED;
if (revs->include_check &&
!revs->include_check(commit, revs->include_check_data))
return 0;
/*
* If the commit is uninteresting, don't try to
* prune parents - we want the maximal uninteresting
* set.
*
* 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->object.flags & UNINTERESTING) {
while (parent) {
struct commit *p = parent->item;
parent = parent->next;
if (p)
p->object.flags |= UNINTERESTING;
if (parse_commit_gently(p, 1) < 0)
continue;
if (p->parents)
mark_parents_uninteresting(p);
if (p->object.flags & SEEN)
continue;
p->object.flags |= SEEN;
commit_list_insert_by_date_cached(p, list, cached_base, cache_ptr);
}
return 0;
}
/*
* Ok, the commit wasn't uninteresting. Try to
* simplify the commit history and find the parent
* that has no differences in the path set if one exists.
*/
try_to_simplify_commit(revs, commit);
if (revs->no_walk)
return 0;
left_flag = (commit->object.flags & SYMMETRIC_LEFT);
for (parent = commit->parents; parent; parent = parent->next) {
struct commit *p = parent->item;
if (parse_commit_gently(p, revs->ignore_missing_links) < 0)
return -1;
if (revs->show_source && !p->util)
p->util = commit->util;
p->object.flags |= left_flag;
if (!(p->object.flags & SEEN)) {
p->object.flags |= SEEN;
commit_list_insert_by_date_cached(p, list, cached_base, cache_ptr);
}
if (revs->first_parent_only)
break;
}
return 0;
}
static void cherry_pick_list(struct commit_list *list, struct rev_info *revs)
{
struct commit_list *p;
int left_count = 0, right_count = 0;
int left_first;
struct patch_ids ids;
unsigned cherry_flag;
/* First count the commits on the left and on the right */
for (p = list; p; p = p->next) {
struct commit *commit = p->item;
unsigned flags = commit->object.flags;
if (flags & BOUNDARY)
;
else if (flags & SYMMETRIC_LEFT)
left_count++;
else
right_count++;
}
if (!left_count || !right_count)
return;
left_first = left_count < right_count;
init_patch_ids(&ids);
ids.diffopts.pathspec = revs->diffopt.pathspec;
/* Compute patch-ids for one side */
for (p = list; p; p = p->next) {
struct commit *commit = p->item;
unsigned flags = commit->object.flags;
if (flags & BOUNDARY)
continue;
/*
* If we have fewer left, left_first is set and we omit
* commits on the right branch in this loop. If we have
* fewer right, we skip the left ones.
*/
if (left_first != !!(flags & SYMMETRIC_LEFT))
continue;
add_commit_patch_id(commit, &ids);
}
/* either cherry_mark or cherry_pick are true */
cherry_flag = revs->cherry_mark ? PATCHSAME : SHOWN;
/* Check the other side */
for (p = list; p; p = p->next) {
struct commit *commit = p->item;
struct patch_id *id;
unsigned flags = commit->object.flags;
if (flags & BOUNDARY)
continue;
/*
* If we have fewer left, left_first is set and we omit
* commits on the left branch in this loop.
*/
if (left_first == !!(flags & SYMMETRIC_LEFT))
continue;
/*
* Have we seen the same patch id?
*/
id = has_commit_patch_id(commit, &ids);
if (!id)
continue;
commit->object.flags |= cherry_flag;
id->commit->object.flags |= cherry_flag;
}
free_patch_ids(&ids);
}
/* How many extra uninteresting commits we want to see.. */
#define SLOP 5
static int still_interesting(struct commit_list *src, timestamp_t date, int slop,
struct commit **interesting_cache)
{
/*
* No source list at all? We're definitely done..
*/
if (!src)
return 0;
/*
* Does the destination list contain entries with a date
* before the source list? Definitely _not_ done.
*/
if (date <= src->item->date)
return SLOP;
/*
* Does the source list still have interesting commits in
* it? Definitely not done..
*/
if (!everybody_uninteresting(src, interesting_cache))
return SLOP;
/* Ok, we're closing in.. */
return slop-1;
}
/*
* "rev-list --ancestry-path A..B" computes commits that are ancestors
* of B but not ancestors of A but further limits the result to those
* that are descendants of A. This takes the list of bottom commits and
* the result of "A..B" without --ancestry-path, and limits the latter
* further to the ones that can reach one of the commits in "bottom".
*/
static void limit_to_ancestry(struct commit_list *bottom, struct commit_list *list)
{
struct commit_list *p;
struct commit_list *rlist = NULL;
int made_progress;
/*
* Reverse the list so that it will be likely that we would
* process parents before children.
*/
for (p = list; p; p = p->next)
commit_list_insert(p->item, &rlist);
for (p = bottom; p; p = p->next)
p->item->object.flags |= TMP_MARK;
/*
* Mark the ones that can reach bottom commits in "list",
* in a bottom-up fashion.
*/
do {
made_progress = 0;
for (p = rlist; p; p = p->next) {
struct commit *c = p->item;
struct commit_list *parents;
if (c->object.flags & (TMP_MARK | UNINTERESTING))
continue;
for (parents = c->parents;
parents;
parents = parents->next) {
if (!(parents->item->object.flags & TMP_MARK))
continue;
c->object.flags |= TMP_MARK;
made_progress = 1;
break;
}
}
} while (made_progress);
/*
* NEEDSWORK: decide if we want to remove parents that are
* not marked with TMP_MARK from commit->parents for commits
* in the resulting list. We may not want to do that, though.
*/
/*
* The ones that are not marked with TMP_MARK are uninteresting
*/
for (p = list; p; p = p->next) {
struct commit *c = p->item;
if (c->object.flags & TMP_MARK)
continue;
c->object.flags |= UNINTERESTING;
}
/* We are done with the TMP_MARK */
for (p = list; p; p = p->next)
p->item->object.flags &= ~TMP_MARK;
for (p = bottom; p; p = p->next)
p->item->object.flags &= ~TMP_MARK;
free_commit_list(rlist);
}
/*
* Before walking the history, keep the set of "negative" refs the
* caller has asked to exclude.
*
* This is used to compute "rev-list --ancestry-path A..B", as we need
* to filter the result of "A..B" further to the ones that can actually
* reach A.
*/
static struct commit_list *collect_bottom_commits(struct commit_list *list)
{
struct commit_list *elem, *bottom = NULL;
for (elem = list; elem; elem = elem->next)
if (elem->item->object.flags & BOTTOM)
commit_list_insert(elem->item, &bottom);
return bottom;
}
/* Assumes either left_only or right_only is set */
static void limit_left_right(struct commit_list *list, struct rev_info *revs)
{
struct commit_list *p;
for (p = list; p; p = p->next) {
struct commit *commit = p->item;
if (revs->right_only) {
if (commit->object.flags & SYMMETRIC_LEFT)
commit->object.flags |= SHOWN;
} else /* revs->left_only is set */
if (!(commit->object.flags & SYMMETRIC_LEFT))
commit->object.flags |= SHOWN;
}
}
static int limit_list(struct rev_info *revs)
{
int slop = SLOP;
timestamp_t date = TIME_MAX;
struct commit_list *list = revs->commits;
struct commit_list *newlist = NULL;
struct commit_list **p = &newlist;
struct commit_list *bottom = NULL;
struct commit *interesting_cache = NULL;
if (revs->ancestry_path) {
bottom = collect_bottom_commits(list);
if (!bottom)
die("--ancestry-path given but there are no bottom commits");
}
while (list) {
struct commit *commit = pop_commit(&list);
struct object *obj = &commit->object;
show_early_output_fn_t show;
if (commit == interesting_cache)
interesting_cache = NULL;
if (revs->max_age != -1 && (commit->date < revs->max_age))
obj->flags |= UNINTERESTING;
if (add_parents_to_list(revs, commit, &list, NULL) < 0)
return -1;
if (obj->flags & UNINTERESTING) {
mark_parents_uninteresting(commit);
if (revs->show_all)
p = &commit_list_insert(commit, p)->next;
slop = still_interesting(list, date, slop, &interesting_cache);
if (slop)
continue;
/* If showing all, add the whole pending list to the end */
if (revs->show_all)
*p = list;
break;
}
if (revs->min_age != -1 && (commit->date > revs->min_age))
continue;
date = commit->date;
p = &commit_list_insert(commit, p)->next;
show = show_early_output;
if (!show)
continue;
show(revs, newlist);
show_early_output = NULL;
}
if (revs->cherry_pick || revs->cherry_mark)
cherry_pick_list(newlist, revs);
if (revs->left_only || revs->right_only)
limit_left_right(newlist, revs);
if (bottom) {
limit_to_ancestry(bottom, newlist);
free_commit_list(bottom);
}
/*
* Check if any commits have become TREESAME by some of their parents
* becoming UNINTERESTING.
*/
if (limiting_can_increase_treesame(revs))
for (list = newlist; list; list = list->next) {
struct commit *c = list->item;
if (c->object.flags & (UNINTERESTING | TREESAME))
continue;
update_treesame(revs, c);
}
revs->commits = newlist;
return 0;
}
/*
* Add an entry to refs->cmdline with the specified information.
* *name is copied.
*/
static void add_rev_cmdline(struct rev_info *revs,
struct object *item,
const char *name,
int whence,
unsigned flags)
{
struct rev_cmdline_info *info = &revs->cmdline;
unsigned int nr = info->nr;
ALLOC_GROW(info->rev, nr + 1, info->alloc);
info->rev[nr].item = item;
info->rev[nr].name = xstrdup(name);
info->rev[nr].whence = whence;
info->rev[nr].flags = flags;
info->nr++;
}
static void add_rev_cmdline_list(struct rev_info *revs,
struct commit_list *commit_list,
int whence,
unsigned flags)
{
while (commit_list) {
struct object *object = &commit_list->item->object;
add_rev_cmdline(revs, object, oid_to_hex(&object->oid),
whence, flags);
commit_list = commit_list->next;
}
}
struct all_refs_cb {
int all_flags;
int warned_bad_reflog;
struct rev_info *all_revs;
const char *name_for_errormsg;
struct ref_store *refs;
};
int ref_excluded(struct string_list *ref_excludes, const char *path)
{
struct string_list_item *item;
if (!ref_excludes)
return 0;
for_each_string_list_item(item, ref_excludes) {
if (!wildmatch(item->string, path, 0))
return 1;
}
return 0;
}
static int handle_one_ref(const char *path, const struct object_id *oid,
int flag, void *cb_data)
{
struct all_refs_cb *cb = cb_data;
struct object *object;
if (ref_excluded(cb->all_revs->ref_excludes, path))
return 0;
object = get_reference(cb->all_revs, path, oid, cb->all_flags);
add_rev_cmdline(cb->all_revs, object, path, REV_CMD_REF, cb->all_flags);
add_pending_oid(cb->all_revs, path, oid, cb->all_flags);
return 0;
}
static void init_all_refs_cb(struct all_refs_cb *cb, struct rev_info *revs,
unsigned flags)
{
cb->all_revs = revs;
cb->all_flags = flags;
revs->rev_input_given = 1;
cb->refs = NULL;
}
void clear_ref_exclusion(struct string_list **ref_excludes_p)
{
if (*ref_excludes_p) {
string_list_clear(*ref_excludes_p, 0);
free(*ref_excludes_p);
}
*ref_excludes_p = NULL;
}
void add_ref_exclusion(struct string_list **ref_excludes_p, const char *exclude)
{
if (!*ref_excludes_p) {
*ref_excludes_p = xcalloc(1, sizeof(**ref_excludes_p));
(*ref_excludes_p)->strdup_strings = 1;
}
string_list_append(*ref_excludes_p, exclude);
}
static void handle_refs(struct ref_store *refs,
struct rev_info *revs, unsigned flags,
int (*for_each)(struct ref_store *, each_ref_fn, void *))
{
struct all_refs_cb cb;
if (!refs) {
/* this could happen with uninitialized submodules */
return;
}
init_all_refs_cb(&cb, revs, flags);
for_each(refs, handle_one_ref, &cb);
}
static void handle_one_reflog_commit(struct object_id *oid, void *cb_data)
{
struct all_refs_cb *cb = cb_data;
if (!is_null_oid(oid)) {
struct object *o = parse_object(oid);
if (o) {
o->flags |= cb->all_flags;
/* ??? CMDLINEFLAGS ??? */
add_pending_object(cb->all_revs, o, "");
}
else if (!cb->warned_bad_reflog) {
warning("reflog of '%s' references pruned commits",
cb->name_for_errormsg);
cb->warned_bad_reflog = 1;
}
}
}
static int handle_one_reflog_ent(struct object_id *ooid, struct object_id *noid,
const char *email, timestamp_t timestamp, int tz,
const char *message, void *cb_data)
{
handle_one_reflog_commit(ooid, cb_data);
handle_one_reflog_commit(noid, cb_data);
return 0;
}
static int handle_one_reflog(const char *path, const struct object_id *oid,
int flag, void *cb_data)
{
struct all_refs_cb *cb = cb_data;
cb->warned_bad_reflog = 0;
cb->name_for_errormsg = path;
refs_for_each_reflog_ent(cb->refs, path,
handle_one_reflog_ent, cb_data);
return 0;
}
static void add_other_reflogs_to_pending(struct all_refs_cb *cb)
{
struct worktree **worktrees, **p;
worktrees = get_worktrees(0);
for (p = worktrees; *p; p++) {
struct worktree *wt = *p;
if (wt->is_current)
continue;
cb->refs = get_worktree_ref_store(wt);
refs_for_each_reflog(cb->refs,
handle_one_reflog,
cb);
}
free_worktrees(worktrees);
}
void add_reflogs_to_pending(struct rev_info *revs, unsigned flags)
{
struct all_refs_cb cb;
cb.all_revs = revs;
cb.all_flags = flags;
cb.refs = get_main_ref_store();
for_each_reflog(handle_one_reflog, &cb);
if (!revs->single_worktree)
add_other_reflogs_to_pending(&cb);
}
static void add_cache_tree(struct cache_tree *it, struct rev_info *revs,
struct strbuf *path)
{
size_t baselen = path->len;
int i;
if (it->entry_count >= 0) {
struct tree *tree = lookup_tree(&it->oid);
add_pending_object_with_path(revs, &tree->object, "",
040000, path->buf);
}
for (i = 0; i < it->subtree_nr; i++) {
struct cache_tree_sub *sub = it->down[i];
strbuf_addf(path, "%s%s", baselen ? "/" : "", sub->name);
add_cache_tree(sub->cache_tree, revs, path);
strbuf_setlen(path, baselen);
}
}
static void do_add_index_objects_to_pending(struct rev_info *revs,
struct index_state *istate)
{
int i;
for (i = 0; i < istate->cache_nr; i++) {
struct cache_entry *ce = istate->cache[i];
struct blob *blob;
if (S_ISGITLINK(ce->ce_mode))
continue;
blob = lookup_blob(&ce->oid);
if (!blob)
die("unable to add index blob to traversal");
add_pending_object_with_path(revs, &blob->object, "",
ce->ce_mode, ce->name);
}
if (istate->cache_tree) {
struct strbuf path = STRBUF_INIT;
add_cache_tree(istate->cache_tree, revs, &path);
strbuf_release(&path);
}
}
void add_index_objects_to_pending(struct rev_info *revs, unsigned int flags)
{
struct worktree **worktrees, **p;
read_cache();
do_add_index_objects_to_pending(revs, &the_index);
if (revs->single_worktree)
return;
worktrees = get_worktrees(0);
for (p = worktrees; *p; p++) {
struct worktree *wt = *p;
struct index_state istate = { NULL };
if (wt->is_current)
continue; /* current index already taken care of */
if (read_index_from(&istate,
worktree_git_path(wt, "index"),
get_worktree_git_dir(wt)) > 0)
do_add_index_objects_to_pending(revs, &istate);
discard_index(&istate);
}
free_worktrees(worktrees);
}
static int add_parents_only(struct rev_info *revs, const char *arg_, int flags,
int exclude_parent)
{
struct object_id oid;
struct object *it;
struct commit *commit;
struct commit_list *parents;
int parent_number;
const char *arg = arg_;
if (*arg == '^') {
flags ^= UNINTERESTING | BOTTOM;
arg++;
}
if (get_oid_committish(arg, &oid))
return 0;
while (1) {
it = get_reference(revs, arg, &oid, 0);
if (!it && revs->ignore_missing)
return 0;
if (it->type != OBJ_TAG)
break;
if (!((struct tag*)it)->tagged)
return 0;
oidcpy(&oid, &((struct tag*)it)->tagged->oid);
}
if (it->type != OBJ_COMMIT)
return 0;
commit = (struct commit *)it;
if (exclude_parent &&
exclude_parent > commit_list_count(commit->parents))
return 0;
for (parents = commit->parents, parent_number = 1;
parents;
parents = parents->next, parent_number++) {
if (exclude_parent && parent_number != exclude_parent)
continue;
it = &parents->item->object;
it->flags |= flags;
add_rev_cmdline(revs, it, arg_, REV_CMD_PARENTS_ONLY, 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;
DIFF_OPT_SET(&revs->pruning, RECURSIVE);
DIFF_OPT_SET(&revs->pruning, QUICK);
revs->pruning.add_remove = file_add_remove;
revs->pruning.change = file_change;
revs->sort_order = REV_SORT_IN_GRAPH_ORDER;
revs->dense = 1;
revs->prefix = prefix;
revs->max_age = -1;
revs->min_age = -1;
revs->skip_count = -1;
revs->max_count = -1;
revs->max_parents = -1;
revs->expand_tabs_in_log = -1;
revs->commit_format = CMIT_FMT_DEFAULT;
revs->expand_tabs_in_log_default = 8;
init_grep_defaults();
grep_init(&revs->grep_filter, prefix);
revs->grep_filter.status_only = 1;
diff_setup(&revs->diffopt);
if (prefix && !revs->diffopt.prefix) {
revs->diffopt.prefix = prefix;
revs->diffopt.prefix_length = strlen(prefix);
}
revs->notes_opt.use_default_notes = -1;
}
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, oid_to_hex(&object->oid));
commit_list = commit_list->next;
}
}
static void prepare_show_merge(struct rev_info *revs)
{
struct commit_list *bases;
struct commit *head, *other;
struct object_id oid;
const char **prune = NULL;
int i, prune_num = 1; /* counting terminating NULL */
if (get_oid("HEAD", &oid))
die("--merge without HEAD?");
head = lookup_commit_or_die(&oid, "HEAD");
if (get_oid("MERGE_HEAD", &oid))
die("--merge without MERGE_HEAD?");
other = lookup_commit_or_die(&oid, "MERGE_HEAD");
add_pending_object(revs, &head->object, "HEAD");
add_pending_object(revs, &other->object, "MERGE_HEAD");
bases = get_merge_bases(head, other);
add_rev_cmdline_list(revs, bases, REV_CMD_MERGE_BASE, UNINTERESTING | BOTTOM);
add_pending_commit_list(revs, bases, UNINTERESTING | BOTTOM);
free_commit_list(bases);
head->object.flags |= SYMMETRIC_LEFT;
if (!active_nr)
read_cache();
for (i = 0; i < active_nr; i++) {
const struct cache_entry *ce = active_cache[i];
if (!ce_stage(ce))
continue;
if (ce_path_match(ce, &revs->prune_data, NULL)) {
prune_num++;
REALLOC_ARRAY(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++;
}
clear_pathspec(&revs->prune_data);
parse_pathspec(&revs->prune_data, PATHSPEC_ALL_MAGIC & ~PATHSPEC_LITERAL,
PATHSPEC_PREFER_FULL | PATHSPEC_LITERAL_PATH, "", prune);
revs->limited = 1;
}
static int dotdot_missing(const char *arg, char *dotdot,
struct rev_info *revs, int symmetric)
{
if (revs->ignore_missing)
return 0;
/* de-munge so we report the full argument */
*dotdot = '.';
die(symmetric
? "Invalid symmetric difference expression %s"
: "Invalid revision range %s", arg);
}
static int handle_dotdot_1(const char *arg, char *dotdot,
struct rev_info *revs, int flags,
int cant_be_filename,
struct object_context *a_oc,
struct object_context *b_oc)
{
const char *a_name, *b_name;
struct object_id a_oid, b_oid;
struct object *a_obj, *b_obj;
unsigned int a_flags, b_flags;
int symmetric = 0;
unsigned int flags_exclude = flags ^ (UNINTERESTING | BOTTOM);
unsigned int oc_flags = GET_OID_COMMITTISH | GET_OID_RECORD_PATH;
a_name = arg;
if (!*a_name)
a_name = "HEAD";
b_name = dotdot + 2;
if (*b_name == '.') {
symmetric = 1;
b_name++;
}
if (!*b_name)
b_name = "HEAD";
if (get_oid_with_context(a_name, oc_flags, &a_oid, a_oc) ||
get_oid_with_context(b_name, oc_flags, &b_oid, b_oc))
return -1;
if (!cant_be_filename) {
*dotdot = '.';
verify_non_filename(revs->prefix, arg);
*dotdot = '\0';
}
a_obj = parse_object(&a_oid);
b_obj = parse_object(&b_oid);
if (!a_obj || !b_obj)
return dotdot_missing(arg, dotdot, revs, symmetric);
if (!symmetric) {
/* just A..B */
b_flags = flags;
a_flags = flags_exclude;
} else {
/* A...B -- find merge bases between the two */
struct commit *a, *b;
struct commit_list *exclude;
a = lookup_commit_reference(&a_obj->oid);
b = lookup_commit_reference(&b_obj->oid);
if (!a || !b)
return dotdot_missing(arg, dotdot, revs, symmetric);
exclude = get_merge_bases(a, b);
add_rev_cmdline_list(revs, exclude, REV_CMD_MERGE_BASE,
flags_exclude);
add_pending_commit_list(revs, exclude, flags_exclude);
free_commit_list(exclude);
b_flags = flags;
a_flags = flags | SYMMETRIC_LEFT;
}
a_obj->flags |= a_flags;
b_obj->flags |= b_flags;
add_rev_cmdline(revs, a_obj, a_name, REV_CMD_LEFT, a_flags);
add_rev_cmdline(revs, b_obj, b_name, REV_CMD_RIGHT, b_flags);
add_pending_object_with_path(revs, a_obj, a_name, a_oc->mode, a_oc->path);
add_pending_object_with_path(revs, b_obj, b_name, b_oc->mode, b_oc->path);
return 0;
}
static int handle_dotdot(const char *arg,
struct rev_info *revs, int flags,
int cant_be_filename)
{
struct object_context a_oc, b_oc;
char *dotdot = strstr(arg, "..");
int ret;
if (!dotdot)
return -1;
memset(&a_oc, 0, sizeof(a_oc));
memset(&b_oc, 0, sizeof(b_oc));
*dotdot = '\0';
ret = handle_dotdot_1(arg, dotdot, revs, flags, cant_be_filename,
&a_oc, &b_oc);
*dotdot = '.';
free(a_oc.path);
free(b_oc.path);
return ret;
}
int handle_revision_arg(const char *arg_, struct rev_info *revs, int flags, unsigned revarg_opt)
{
struct object_context oc;
char *mark;
struct object *object;
struct object_id oid;
int local_flags;
const char *arg = arg_;
int cant_be_filename = revarg_opt & REVARG_CANNOT_BE_FILENAME;
unsigned get_sha1_flags = GET_OID_RECORD_PATH;
flags = flags & UNINTERESTING ? flags | BOTTOM : flags & ~BOTTOM;
if (!cant_be_filename && !strcmp(arg, "..")) {
/*
* Just ".."? That is not a range but the
* pathspec for the parent directory.
*/
return -1;
}
if (!handle_dotdot(arg, revs, flags, revarg_opt))
return 0;
mark = strstr(arg, "^@");
if (mark && !mark[2]) {
*mark = 0;
if (add_parents_only(revs, arg, flags, 0))
return 0;
*mark = '^';
}
mark = strstr(arg, "^!");
if (mark && !mark[2]) {
*mark = 0;
if (!add_parents_only(revs, arg, flags ^ (UNINTERESTING | BOTTOM), 0))
*mark = '^';
}
mark = strstr(arg, "^-");
if (mark) {
int exclude_parent = 1;
if (mark[2]) {
char *end;
exclude_parent = strtoul(mark + 2, &end, 10);
if (*end != '\0' || !exclude_parent)
return -1;
}
*mark = 0;
if (!add_parents_only(revs, arg, flags ^ (UNINTERESTING | BOTTOM), exclude_parent))
*mark = '^';
}
local_flags = 0;
if (*arg == '^') {
local_flags = UNINTERESTING | BOTTOM;
arg++;
}
if (revarg_opt & REVARG_COMMITTISH)
get_sha1_flags |= GET_OID_COMMITTISH;
if (get_oid_with_context(arg, get_sha1_flags, &oid, &oc))
return revs->ignore_missing ? 0 : -1;
if (!cant_be_filename)
verify_non_filename(revs->prefix, arg);
object = get_reference(revs, arg, &oid, flags ^ local_flags);
add_rev_cmdline(revs, object, arg_, REV_CMD_REV, flags ^ local_flags);
add_pending_object_with_path(revs, object, arg, oc.mode, oc.path);
free(oc.path);
return 0;
}
static void read_pathspec_from_stdin(struct rev_info *revs, struct strbuf *sb,
struct argv_array *prune)
{
while (strbuf_getline(sb, stdin) != EOF)
argv_array_push(prune, sb->buf);
}
static void read_revisions_from_stdin(struct rev_info *revs,
struct argv_array *prune)
{
struct strbuf sb;
int seen_dashdash = 0;
int save_warning;
save_warning = warn_on_object_refname_ambiguity;
warn_on_object_refname_ambiguity = 0;
strbuf_init(&sb, 1000);
while (strbuf_getline(&sb, stdin) != EOF) {
int len = sb.len;
if (!len)
break;
if (sb.buf[0] == '-') {
if (len == 2 && sb.buf[1] == '-') {
seen_dashdash = 1;
break;
}
die("options not supported in --stdin mode");
}
if (handle_revision_arg(sb.buf, revs, 0,
REVARG_CANNOT_BE_FILENAME))
die("bad revision '%s'", sb.buf);
}
if (seen_dashdash)
read_pathspec_from_stdin(revs, &sb, prune);
strbuf_release(&sb);
warn_on_object_refname_ambiguity = save_warning;
}
static void add_grep(struct rev_info *revs, const char *ptn, enum grep_pat_token what)
{
append_grep_pattern(&revs->grep_filter, ptn, "command line", 0, what);
}
static void add_header_grep(struct rev_info *revs, enum grep_header_field field, const char *pattern)
{
append_header_grep_pattern(&revs->grep_filter, field, pattern);
}
static void add_message_grep(struct rev_info *revs, const char *pattern)
{
add_grep(revs, pattern, GREP_PATTERN_BODY);
}
static int handle_revision_opt(struct rev_info *revs, int argc, const char **argv,
int *unkc, const char **unkv)
{
const char *arg = argv[0];
const char *optarg;
int argcount;
/* pseudo revision arguments */
if (!strcmp(arg, "--all") || !strcmp(arg, "--branches") ||
!strcmp(arg, "--tags") || !strcmp(arg, "--remotes") ||
!strcmp(arg, "--reflog") || !strcmp(arg, "--not") ||
!strcmp(arg, "--no-walk") || !strcmp(arg, "--do-walk") ||
!strcmp(arg, "--bisect") || starts_with(arg, "--glob=") ||
!strcmp(arg, "--indexed-objects") ||
starts_with(arg, "--exclude=") ||
starts_with(arg, "--branches=") || starts_with(arg, "--tags=") ||
starts_with(arg, "--remotes=") || starts_with(arg, "--no-walk="))
{
unkv[(*unkc)++] = arg;
return 1;
}
if ((argcount = parse_long_opt("max-count", argv, &optarg))) {
revs->max_count = atoi(optarg);
revs->no_walk = 0;
return argcount;
} else if ((argcount = parse_long_opt("skip", argv, &optarg))) {
revs->skip_count = atoi(optarg);
return argcount;
} else if ((*arg == '-') && isdigit(arg[1])) {
/* accept -<digit>, like traditional "head" */
if (strtol_i(arg + 1, 10, &revs->max_count) < 0 ||
revs->max_count < 0)
die("'%s': not a non-negative integer", arg + 1);
revs->no_walk = 0;
} else if (!strcmp(arg, "-n")) {
if (argc <= 1)
return error("-n requires an argument");
revs->max_count = atoi(argv[1]);
revs->no_walk = 0;
return 2;
} else if (skip_prefix(arg, "-n", &optarg)) {
revs->max_count = atoi(optarg);
revs->no_walk = 0;
} else if ((argcount = parse_long_opt("max-age", argv, &optarg))) {
revs->max_age = atoi(optarg);
return argcount;
} else if ((argcount = parse_long_opt("since", argv, &optarg))) {
revs->max_age = approxidate(optarg);
return argcount;
} else if ((argcount = parse_long_opt("after", argv, &optarg))) {
revs->max_age = approxidate(optarg);
return argcount;
} else if ((argcount = parse_long_opt("min-age", argv, &optarg))) {
revs->min_age = atoi(optarg);
return argcount;
} else if ((argcount = parse_long_opt("before", argv, &optarg))) {
revs->min_age = approxidate(optarg);
return argcount;
} else if ((argcount = parse_long_opt("until", argv, &optarg))) {
revs->min_age = approxidate(optarg);
return argcount;
} else if (!strcmp(arg, "--first-parent")) {
revs->first_parent_only = 1;
} else if (!strcmp(arg, "--ancestry-path")) {
revs->ancestry_path = 1;
revs->simplify_history = 0;
revs->limited = 1;
} else if (!strcmp(arg, "-g") || !strcmp(arg, "--walk-reflogs")) {
init_reflog_walk(&revs->reflog_info);
} else if (!strcmp(arg, "--default")) {
if (argc <= 1)
return error("bad --default argument");
revs->def = argv[1];
return 2;
} else if (!strcmp(arg, "--merge")) {
revs->show_merge = 1;
} else if (!strcmp(arg, "--topo-order")) {
revs->sort_order = REV_SORT_IN_GRAPH_ORDER;
revs->topo_order = 1;
} else if (!strcmp(arg, "--simplify-merges")) {
revs->simplify_merges = 1;
revs->topo_order = 1;
revs->rewrite_parents = 1;
revs->simplify_history = 0;
revs->limited = 1;
} else if (!strcmp(arg, "--simplify-by-decoration")) {
revs->simplify_merges = 1;
revs->topo_order = 1;
revs->rewrite_parents = 1;
revs->simplify_history = 0;
revs->simplify_by_decoration = 1;
revs->limited = 1;
revs->prune = 1;
load_ref_decorations(DECORATE_SHORT_REFS);
} else if (!strcmp(arg, "--date-order")) {
revs->sort_order = REV_SORT_BY_COMMIT_DATE;
revs->topo_order = 1;
} else if (!strcmp(arg, "--author-date-order")) {
revs->sort_order = REV_SORT_BY_AUTHOR_DATE;
revs->topo_order = 1;
} else if (!strcmp(arg, "--early-output")) {
revs->early_output = 100;
revs->topo_order = 1;
} else if (skip_prefix(arg, "--early-output=", &optarg)) {
if (strtoul_ui(optarg, 10, &revs->early_output) < 0)
die("'%s': not a non-negative integer", optarg);
revs->topo_order = 1;
} else if (!strcmp(arg, "--parents")) {
revs->rewrite_parents = 1;
revs->print_parents = 1;
} else if (!strcmp(arg, "--dense")) {
revs->dense = 1;
} else if (!strcmp(arg, "--sparse")) {
revs->dense = 0;
} else if (!strcmp(arg, "--show-all")) {
revs->show_all = 1;
} else if (!strcmp(arg, "--remove-empty")) {
revs->remove_empty_trees = 1;
} else if (!strcmp(arg, "--merges")) {
revs->min_parents = 2;
} else if (!strcmp(arg, "--no-merges")) {
revs->max_parents = 1;
} else if (skip_prefix(arg, "--min-parents=", &optarg)) {
revs->min_parents = atoi(optarg);
} else if (!strcmp(arg, "--no-min-parents")) {
revs->min_parents = 0;
} else if (skip_prefix(arg, "--max-parents=", &optarg)) {
revs->max_parents = atoi(optarg);
} else if (!strcmp(arg, "--no-max-parents")) {
revs->max_parents = -1;
} else if (!strcmp(arg, "--boundary")) {
revs->boundary = 1;
} else if (!strcmp(arg, "--left-right")) {
revs->left_right = 1;
} else if (!strcmp(arg, "--left-only")) {
if (revs->right_only)
die("--left-only is incompatible with --right-only"
" or --cherry");
revs->left_only = 1;
} else if (!strcmp(arg, "--right-only")) {
if (revs->left_only)
die("--right-only is incompatible with --left-only");
revs->right_only = 1;
} else if (!strcmp(arg, "--cherry")) {
if (revs->left_only)
die("--cherry is incompatible with --left-only");
revs->cherry_mark = 1;
revs->right_only = 1;
revs->max_parents = 1;
revs->limited = 1;
} else if (!strcmp(arg, "--count")) {
revs->count = 1;
} else if (!strcmp(arg, "--cherry-mark")) {
if (revs->cherry_pick)
die("--cherry-mark is incompatible with --cherry-pick");
revs->cherry_mark = 1;
revs->limited = 1; /* needs limit_list() */
} else if (!strcmp(arg, "--cherry-pick")) {
if (revs->cherry_mark)
die("--cherry-pick is incompatible with --cherry-mark");
revs->cherry_pick = 1;
revs->limited = 1;
} else if (!strcmp(arg, "--objects")) {
revs->tag_objects = 1;
revs->tree_objects = 1;
revs->blob_objects = 1;
} else if (!strcmp(arg, "--objects-edge")) {
revs->tag_objects = 1;
revs->tree_objects = 1;
revs->blob_objects = 1;
revs->edge_hint = 1;
} else if (!strcmp(arg, "--objects-edge-aggressive")) {
revs->tag_objects = 1;
revs->tree_objects = 1;
revs->blob_objects = 1;
revs->edge_hint = 1;
revs->edge_hint_aggressive = 1;
} else if (!strcmp(arg, "--verify-objects")) {
revs->tag_objects = 1;
revs->tree_objects = 1;
revs->blob_objects = 1;
revs->verify_objects = 1;
} else if (!strcmp(arg, "--unpacked")) {
revs->unpacked = 1;
} else if (starts_with(arg, "--unpacked=")) {
die("--unpacked=<packfile> no longer supported.");
} else if (!strcmp(arg, "-r")) {
revs->diff = 1;
DIFF_OPT_SET(&revs->diffopt, RECURSIVE);
} else if (!strcmp(arg, "-t")) {
revs->diff = 1;
DIFF_OPT_SET(&revs->diffopt, RECURSIVE);
DIFF_OPT_SET(&revs->diffopt, TREE_IN_RECURSIVE);
} else if (!strcmp(arg, "-m")) {
revs->ignore_merges = 0;
} else if (!strcmp(arg, "-c")) {
revs->diff = 1;
revs->dense_combined_merges = 0;
revs->combine_merges = 1;
} else if (!strcmp(arg, "--cc")) {
revs->diff = 1;
revs->dense_combined_merges = 1;
revs->combine_merges = 1;
} else if (!strcmp(arg, "-v")) {
revs->verbose_header = 1;
} else if (!strcmp(arg, "--pretty")) {
revs->verbose_header = 1;
revs->pretty_given = 1;
get_commit_format(NULL, revs);
} else if (skip_prefix(arg, "--pretty=", &optarg) ||
skip_prefix(arg, "--format=", &optarg)) {
/*
* Detached form ("--pretty X" as opposed to "--pretty=X")
* not allowed, since the argument is optional.
*/
revs->verbose_header = 1;
revs->pretty_given = 1;
get_commit_format(optarg, revs);
} else if (!strcmp(arg, "--expand-tabs")) {
revs->expand_tabs_in_log = 8;
} else if (!strcmp(arg, "--no-expand-tabs")) {
revs->expand_tabs_in_log = 0;
} else if (skip_prefix(arg, "--expand-tabs=", &arg)) {
int val;
if (strtol_i(arg, 10, &val) < 0 || val < 0)
die("'%s': not a non-negative integer", arg);
revs->expand_tabs_in_log = val;
} else if (!strcmp(arg, "--show-notes") || !strcmp(arg, "--notes")) {
revs->show_notes = 1;
revs->show_notes_given = 1;
revs->notes_opt.use_default_notes = 1;
} else if (!strcmp(arg, "--show-signature")) {
revs->show_signature = 1;
} else if (!strcmp(arg, "--no-show-signature")) {
revs->show_signature = 0;
} else if (!strcmp(arg, "--show-linear-break")) {
revs->break_bar = " ..........";
revs->track_linear = 1;
revs->track_first_time = 1;
} else if (skip_prefix(arg, "--show-linear-break=", &optarg)) {
revs->break_bar = xstrdup(optarg);
revs->track_linear = 1;
revs->track_first_time = 1;
} else if (skip_prefix(arg, "--show-notes=", &optarg) ||
skip_prefix(arg, "--notes=", &optarg)) {
struct strbuf buf = STRBUF_INIT;
revs->show_notes = 1;
revs->show_notes_given = 1;
if (starts_with(arg, "--show-notes=") &&
revs->notes_opt.use_default_notes < 0)
revs->notes_opt.use_default_notes = 1;
strbuf_addstr(&buf, optarg);
expand_notes_ref(&buf);
string_list_append(&revs->notes_opt.extra_notes_refs,
strbuf_detach(&buf, NULL));
} else if (!strcmp(arg, "--no-notes")) {
revs->show_notes = 0;
revs->show_notes_given = 1;
revs->notes_opt.use_default_notes = -1;
/* we have been strdup'ing ourselves, so trick
* string_list into free()ing strings */
revs->notes_opt.extra_notes_refs.strdup_strings = 1;
string_list_clear(&revs->notes_opt.extra_notes_refs, 0);
revs->notes_opt.extra_notes_refs.strdup_strings = 0;
} else if (!strcmp(arg, "--standard-notes")) {
revs->show_notes_given = 1;
revs->notes_opt.use_default_notes = 1;
} else if (!strcmp(arg, "--no-standard-notes")) {
revs->notes_opt.use_default_notes = 0;
} else if (!strcmp(arg, "--oneline")) {
revs->verbose_header = 1;
get_commit_format("oneline", revs);
revs->pretty_given = 1;
revs->abbrev_commit = 1;
} else if (!strcmp(arg, "--graph")) {
revs->topo_order = 1;
revs->rewrite_parents = 1;
revs->graph = graph_init(revs);
} else if (!strcmp(arg, "--root")) {
revs->show_root_diff = 1;
} else if (!strcmp(arg, "--no-commit-id")) {
revs->no_commit_id = 1;
} else if (!strcmp(arg, "--always")) {
revs->always_show_header = 1;
} else if (!strcmp(arg, "--no-abbrev")) {
revs->abbrev = 0;
} else if (!strcmp(arg, "--abbrev")) {
revs->abbrev = DEFAULT_ABBREV;
} else if (skip_prefix(arg, "--abbrev=", &optarg)) {
revs->abbrev = strtoul(optarg, NULL, 10);
if (revs->abbrev < MINIMUM_ABBREV)
revs->abbrev = MINIMUM_ABBREV;
else if (revs->abbrev > 40)
revs->abbrev = 40;
} else if (!strcmp(arg, "--abbrev-commit")) {
revs->abbrev_commit = 1;
revs->abbrev_commit_given = 1;
} else if (!strcmp(arg, "--no-abbrev-commit")) {
revs->abbrev_commit = 0;
} else if (!strcmp(arg, "--full-diff")) {
revs->diff = 1;
revs->full_diff = 1;
} else if (!strcmp(arg, "--full-history")) {
revs->simplify_history = 0;
} else if (!strcmp(arg, "--relative-date")) {
revs->date_mode.type = DATE_RELATIVE;
revs->date_mode_explicit = 1;
} else if ((argcount = parse_long_opt("date", argv, &optarg))) {
parse_date_format(optarg, &revs->date_mode);
revs->date_mode_explicit = 1;
return argcount;
} else if (!strcmp(arg, "--log-size")) {
revs->show_log_size = 1;
}
/*
* Grepping the commit log
*/
else if ((argcount = parse_long_opt("author", argv, &optarg))) {
add_header_grep(revs, GREP_HEADER_AUTHOR, optarg);
return argcount;
} else if ((argcount = parse_long_opt("committer", argv, &optarg))) {
add_header_grep(revs, GREP_HEADER_COMMITTER, optarg);
return argcount;
} else if ((argcount = parse_long_opt("grep-reflog", argv, &optarg))) {
add_header_grep(revs, GREP_HEADER_REFLOG, optarg);
return argcount;
} else if ((argcount = parse_long_opt("grep", argv, &optarg))) {
add_message_grep(revs, optarg);
return argcount;
} else if (!strcmp(arg, "--grep-debug")) {
revs->grep_filter.debug = 1;
} else if (!strcmp(arg, "--basic-regexp")) {
revs->grep_filter.pattern_type_option = GREP_PATTERN_TYPE_BRE;
} else if (!strcmp(arg, "--extended-regexp") || !strcmp(arg, "-E")) {
revs->grep_filter.pattern_type_option = GREP_PATTERN_TYPE_ERE;
} else if (!strcmp(arg, "--regexp-ignore-case") || !strcmp(arg, "-i")) {
revs->grep_filter.ignore_case = 1;
DIFF_OPT_SET(&revs->diffopt, PICKAXE_IGNORE_CASE);
} else if (!strcmp(arg, "--fixed-strings") || !strcmp(arg, "-F")) {
revs->grep_filter.pattern_type_option = GREP_PATTERN_TYPE_FIXED;
} else if (!strcmp(arg, "--perl-regexp") || !strcmp(arg, "-P")) {
revs->grep_filter.pattern_type_option = GREP_PATTERN_TYPE_PCRE;
} else if (!strcmp(arg, "--all-match")) {
revs->grep_filter.all_match = 1;
} else if (!strcmp(arg, "--invert-grep")) {
revs->invert_grep = 1;
} else if ((argcount = parse_long_opt("encoding", argv, &optarg))) {
if (strcmp(optarg, "none"))
git_log_output_encoding = xstrdup(optarg);
else
git_log_output_encoding = "";
return argcount;
} else if (!strcmp(arg, "--reverse")) {
revs->reverse ^= 1;
} else if (!strcmp(arg, "--children")) {
revs->children.name = "children";
revs->limited = 1;
} else if (!strcmp(arg, "--ignore-missing")) {
revs->ignore_missing = 1;
} else {
int opts = diff_opt_parse(&revs->diffopt, argv, argc, revs->prefix);
if (!opts)
unkv[(*unkc)++] = arg;
return opts;
}
if (revs->graph && revs->track_linear)
die("--show-linear-break and --graph are incompatible");
return 1;
}
void parse_revision_opt(struct rev_info *revs, struct parse_opt_ctx_t *ctx,
const struct option *options,
const char * const usagestr[])
{
int n = handle_revision_opt(revs, ctx->argc, ctx->argv,
&ctx->cpidx, ctx->out);
if (n <= 0) {
error("unknown option `%s'", ctx->argv[0]);
usage_with_options(usagestr, options);
}
ctx->argv += n;
ctx->argc -= n;
}
static int for_each_bisect_ref(struct ref_store *refs, each_ref_fn fn,
void *cb_data, const char *term)
{
struct strbuf bisect_refs = STRBUF_INIT;
int status;
strbuf_addf(&bisect_refs, "refs/bisect/%s", term);
status = refs_for_each_fullref_in(refs, bisect_refs.buf, fn, cb_data, 0);
strbuf_release(&bisect_refs);
return status;
}
static int for_each_bad_bisect_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data)
{
return for_each_bisect_ref(refs, fn, cb_data, term_bad);
}
static int for_each_good_bisect_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data)
{
return for_each_bisect_ref(refs, fn, cb_data, term_good);
}
static int handle_revision_pseudo_opt(const char *submodule,
struct rev_info *revs,
int argc, const char **argv, int *flags)
{
const char *arg = argv[0];
const char *optarg;
struct ref_store *refs;
int argcount;
if (submodule) {
/*
* We need some something like get_submodule_worktrees()
* before we can go through all worktrees of a submodule,
* .e.g with adding all HEADs from --all, which is not
* supported right now, so stick to single worktree.
*/
if (!revs->single_worktree)
die("BUG: --single-worktree cannot be used together with submodule");
refs = get_submodule_ref_store(submodule);
} else
refs = get_main_ref_store();
/*
* NOTE!
*
* Commands like "git shortlog" will not accept the options below
* unless parse_revision_opt queues them (as opposed to erroring
* out).
*
* When implementing your new pseudo-option, remember to
* register it in the list at the top of handle_revision_opt.
*/
if (!strcmp(arg, "--all")) {
handle_refs(refs, revs, *flags, refs_for_each_ref);
handle_refs(refs, revs, *flags, refs_head_ref);
if (!revs->single_worktree) {
struct all_refs_cb cb;
init_all_refs_cb(&cb, revs, *flags);
other_head_refs(handle_one_ref, &cb);
}
clear_ref_exclusion(&revs->ref_excludes);
} else if (!strcmp(arg, "--branches")) {
handle_refs(refs, revs, *flags, refs_for_each_branch_ref);
clear_ref_exclusion(&revs->ref_excludes);
} else if (!strcmp(arg, "--bisect")) {
read_bisect_terms(&term_bad, &term_good);
handle_refs(refs, revs, *flags, for_each_bad_bisect_ref);
handle_refs(refs, revs, *flags ^ (UNINTERESTING | BOTTOM),
for_each_good_bisect_ref);
revs->bisect = 1;
} else if (!strcmp(arg, "--tags")) {
handle_refs(refs, revs, *flags, refs_for_each_tag_ref);
clear_ref_exclusion(&revs->ref_excludes);
} else if (!strcmp(arg, "--remotes")) {
handle_refs(refs, revs, *flags, refs_for_each_remote_ref);
clear_ref_exclusion(&revs->ref_excludes);
} else if ((argcount = parse_long_opt("glob", argv, &optarg))) {
struct all_refs_cb cb;
init_all_refs_cb(&cb, revs, *flags);
for_each_glob_ref(handle_one_ref, optarg, &cb);
clear_ref_exclusion(&revs->ref_excludes);
return argcount;
} else if ((argcount = parse_long_opt("exclude", argv, &optarg))) {
add_ref_exclusion(&revs->ref_excludes, optarg);
return argcount;
} else if (skip_prefix(arg, "--branches=", &optarg)) {
struct all_refs_cb cb;
init_all_refs_cb(&cb, revs, *flags);
for_each_glob_ref_in(handle_one_ref, optarg, "refs/heads/", &cb);
clear_ref_exclusion(&revs->ref_excludes);
} else if (skip_prefix(arg, "--tags=", &optarg)) {
struct all_refs_cb cb;
init_all_refs_cb(&cb, revs, *flags);
for_each_glob_ref_in(handle_one_ref, optarg, "refs/tags/", &cb);
clear_ref_exclusion(&revs->ref_excludes);
} else if (skip_prefix(arg, "--remotes=", &optarg)) {
struct all_refs_cb cb;
init_all_refs_cb(&cb, revs, *flags);
for_each_glob_ref_in(handle_one_ref, optarg, "refs/remotes/", &cb);
clear_ref_exclusion(&revs->ref_excludes);
} else if (!strcmp(arg, "--reflog")) {
add_reflogs_to_pending(revs, *flags);
} else if (!strcmp(arg, "--indexed-objects")) {
add_index_objects_to_pending(revs, *flags);
} else if (!strcmp(arg, "--not")) {
*flags ^= UNINTERESTING | BOTTOM;
} else if (!strcmp(arg, "--no-walk")) {
revs->no_walk = REVISION_WALK_NO_WALK_SORTED;
} else if (skip_prefix(arg, "--no-walk=", &optarg)) {
/*
* Detached form ("--no-walk X" as opposed to "--no-walk=X")
* not allowed, since the argument is optional.
*/
if (!strcmp(optarg, "sorted"))
revs->no_walk = REVISION_WALK_NO_WALK_SORTED;
else if (!strcmp(optarg, "unsorted"))
revs->no_walk = REVISION_WALK_NO_WALK_UNSORTED;
else
return error("invalid argument to --no-walk");
} else if (!strcmp(arg, "--do-walk")) {
revs->no_walk = 0;
} else if (!strcmp(arg, "--single-worktree")) {
revs->single_worktree = 1;
} else {
return 0;
}
return 1;
}
static void NORETURN diagnose_missing_default(const char *def)
{
int flags;
const char *refname;
refname = resolve_ref_unsafe(def, 0, NULL, &flags);
if (!refname || !(flags & REF_ISSYMREF) || (flags & REF_ISBROKEN))
die(_("your current branch appears to be broken"));
skip_prefix(refname, "refs/heads/", &refname);
die(_("your current branch '%s' does not have any commits yet"),
refname);
}
/*
* Parse revision information, filling in the "rev_info" structure,
* and removing the used arguments from the argument list.
*
* Returns the number of arguments left that weren't recognized
* (which are also moved to the head of the argument list)
*/
int setup_revisions(int argc, const char **argv, struct rev_info *revs, struct setup_revision_opt *opt)
{
int i, flags, left, seen_dashdash, read_from_stdin, got_rev_arg = 0, revarg_opt;
struct argv_array prune_data = ARGV_ARRAY_INIT;
const char *submodule = NULL;
if (opt)
submodule = opt->submodule;
/* First, search for "--" */
if (opt && opt->assume_dashdash) {
seen_dashdash = 1;
} else {
seen_dashdash = 0;
for (i = 1; i < argc; i++) {
const char *arg = argv[i];
if (strcmp(arg, "--"))
continue;
argv[i] = NULL;
argc = i;
if (argv[i + 1])
argv_array_pushv(&prune_data, argv + i + 1);
seen_dashdash = 1;
break;
}
}
/* Second, deal with arguments and options */
flags = 0;
revarg_opt = opt ? opt->revarg_opt : 0;
if (seen_dashdash)
revarg_opt |= REVARG_CANNOT_BE_FILENAME;
read_from_stdin = 0;
for (left = i = 1; i < argc; i++) {
const char *arg = argv[i];
if (*arg == '-') {
int opts;
opts = handle_revision_pseudo_opt(submodule,
revs, argc - i, argv + i,
&flags);
if (opts > 0) {
i += opts - 1;
continue;
}
if (!strcmp(arg, "--stdin")) {
if (revs->disable_stdin) {
argv[left++] = arg;
continue;
}
if (read_from_stdin++)
die("--stdin given twice?");
read_revisions_from_stdin(revs, &prune_data);
continue;
}
opts = handle_revision_opt(revs, argc - i, argv + i, &left, argv);
if (opts > 0) {
i += opts - 1;
continue;
}
if (opts < 0)
exit(128);
continue;
}
if (handle_revision_arg(arg, revs, flags, revarg_opt)) {
int j;
if (seen_dashdash || *arg == '^')
die("bad revision '%s'", arg);
/* 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], j == i);
argv_array_pushv(&prune_data, argv + i);
break;
}
else
got_rev_arg = 1;
}
if (prune_data.argc) {
/*
* If we need to introduce the magic "a lone ':' means no
* pathspec whatsoever", here is the place to do so.
*
* if (prune_data.nr == 1 && !strcmp(prune_data[0], ":")) {
* prune_data.nr = 0;
* prune_data.alloc = 0;
* free(prune_data.path);
* prune_data.path = NULL;
* } else {
* terminate prune_data.alloc with NULL and
* call init_pathspec() to set revs->prune_data here.
* }
*/
parse_pathspec(&revs->prune_data, 0, 0,
revs->prefix, prune_data.argv);
}
argv_array_clear(&prune_data);
if (revs->def == NULL)
revs->def = opt ? opt->def : NULL;
if (opt && opt->tweak)
opt->tweak(revs, opt);
if (revs->show_merge)
prepare_show_merge(revs);
if (revs->def && !revs->pending.nr && !revs->rev_input_given && !got_rev_arg) {
struct object_id oid;
struct object *object;
struct object_context oc;
if (get_oid_with_context(revs->def, 0, &oid, &oc))
diagnose_missing_default(revs->def);
object = get_reference(revs, revs->def, &oid, 0);
add_pending_object_with_mode(revs, object, revs->def, oc.mode);
}
/* Did the user ask for any diff output? Run the diff! */
if (revs->diffopt.output_format & ~DIFF_FORMAT_NO_OUTPUT)
revs->diff = 1;
/* Pickaxe, diff-filter and rename following need diffs */
if (revs->diffopt.pickaxe ||
revs->diffopt.filter ||
DIFF_OPT_TST(&revs->diffopt, FOLLOW_RENAMES))
revs->diff = 1;
if (revs->topo_order)
revs->limited = 1;
if (revs->prune_data.nr) {
copy_pathspec(&revs->pruning.pathspec, &revs->prune_data);
/* Can't prune commits with rename following: the paths change.. */
if (!DIFF_OPT_TST(&revs->diffopt, FOLLOW_RENAMES))
revs->prune = 1;
if (!revs->full_diff)
copy_pathspec(&revs->diffopt.pathspec,
&revs->prune_data);
}
if (revs->combine_merges)
revs->ignore_merges = 0;
revs->diffopt.abbrev = revs->abbrev;
if (revs->line_level_traverse) {
revs->limited = 1;
revs->topo_order = 1;
}
diff_setup_done(&revs->diffopt);
grep_commit_pattern_type(GREP_PATTERN_TYPE_UNSPECIFIED,
&revs->grep_filter);
compile_grep_patterns(&revs->grep_filter);
if (revs->reverse && revs->reflog_info)
die("cannot combine --reverse with --walk-reflogs");
if (revs->reflog_info && revs->limited)
die("cannot combine --walk-reflogs with history-limiting options");
if (revs->rewrite_parents && revs->children.name)
die("cannot combine --parents and --children");
/*
* Limitations on the graph functionality
*/
if (revs->reverse && revs->graph)
die("cannot combine --reverse with --graph");
if (revs->reflog_info && revs->graph)
die("cannot combine --walk-reflogs with --graph");
if (revs->no_walk && revs->graph)
die("cannot combine --no-walk with --graph");
if (!revs->reflog_info && revs->grep_filter.use_reflog_filter)
die("cannot use --grep-reflog without --walk-reflogs");
if (revs->first_parent_only && revs->bisect)
die(_("--first-parent is incompatible with --bisect"));
if (revs->expand_tabs_in_log < 0)
revs->expand_tabs_in_log = revs->expand_tabs_in_log_default;
return left;
}
static void add_child(struct rev_info *revs, struct commit *parent, struct commit *child)
{
struct commit_list *l = xcalloc(1, sizeof(*l));
l->item = child;
l->next = add_decoration(&revs->children, &parent->object, l);
}
static int remove_duplicate_parents(struct rev_info *revs, struct commit *commit)
{
struct treesame_state *ts = lookup_decoration(&revs->treesame, &commit->object);
struct commit_list **pp, *p;
int surviving_parents;
/* Examine existing parents while marking ones we have seen... */
pp = &commit->parents;
surviving_parents = 0;
while ((p = *pp) != NULL) {
struct commit *parent = p->item;
if (parent->object.flags & TMP_MARK) {
*pp = p->next;
if (ts)
compact_treesame(revs, commit, surviving_parents);
continue;
}
parent->object.flags |= TMP_MARK;
surviving_parents++;
pp = &p->next;
}
/* clear the temporary mark */
for (p = commit->parents; p; p = p->next) {
p->item->object.flags &= ~TMP_MARK;
}
/* no update_treesame() - removing duplicates can't affect TREESAME */
return surviving_parents;
}
struct merge_simplify_state {
struct commit *simplified;
};
static struct merge_simplify_state *locate_simplify_state(struct rev_info *revs, struct commit *commit)
{
struct merge_simplify_state *st;
st = lookup_decoration(&revs->merge_simplification, &commit->object);
if (!st) {
st = xcalloc(1, sizeof(*st));
add_decoration(&revs->merge_simplification, &commit->object, st);
}
return st;
}
static int mark_redundant_parents(struct rev_info *revs, struct commit *commit)
{
struct commit_list *h = reduce_heads(commit->parents);
int i = 0, marked = 0;
struct commit_list *po, *pn;
/* Want these for sanity-checking only */
int orig_cnt = commit_list_count(commit->parents);
int cnt = commit_list_count(h);
/*
* Not ready to remove items yet, just mark them for now, based
* on the output of reduce_heads(). reduce_heads outputs the reduced
* set in its original order, so this isn't too hard.
*/
po = commit->parents;
pn = h;
while (po) {
if (pn && po->item == pn->item) {
pn = pn->next;
i++;
} else {
po->item->object.flags |= TMP_MARK;
marked++;
}
po=po->next;
}
if (i != cnt || cnt+marked != orig_cnt)
die("mark_redundant_parents %d %d %d %d", orig_cnt, cnt, i, marked);
free_commit_list(h);
return marked;
}
static int mark_treesame_root_parents(struct rev_info *revs, struct commit *commit)
{
struct commit_list *p;
int marked = 0;
for (p = commit->parents; p; p = p->next) {
struct commit *parent = p->item;
if (!parent->parents && (parent->object.flags & TREESAME)) {
parent->object.flags |= TMP_MARK;
marked++;
}
}
return marked;
}
/*
* Awkward naming - this means one parent we are TREESAME to.
* cf mark_treesame_root_parents: root parents that are TREESAME (to an
* empty tree). Better name suggestions?
*/
static int leave_one_treesame_to_parent(struct rev_info *revs, struct commit *commit)
{
struct treesame_state *ts = lookup_decoration(&revs->treesame, &commit->object);
struct commit *unmarked = NULL, *marked = NULL;
struct commit_list *p;
unsigned n;
for (p = commit->parents, n = 0; p; p = p->next, n++) {
if (ts->treesame[n]) {
if (p->item->object.flags & TMP_MARK) {
if (!marked)
marked = p->item;
} else {
if (!unmarked) {
unmarked = p->item;
break;
}
}
}
}
/*
* If we are TREESAME to a marked-for-deletion parent, but not to any
* unmarked parents, unmark the first TREESAME parent. This is the
* parent that the default simplify_history==1 scan would have followed,
* and it doesn't make sense to omit that path when asking for a
* simplified full history. Retaining it improves the chances of
* understanding odd missed merges that took an old version of a file.
*
* Example:
*
* I--------*X A modified the file, but mainline merge X used
* \ / "-s ours", so took the version from I. X is
* `-*A--' TREESAME to I and !TREESAME to A.
*
* Default log from X would produce "I". Without this check,
* --full-history --simplify-merges would produce "I-A-X", showing
* the merge commit X and that it changed A, but not making clear that
* it had just taken the I version. With this check, the topology above
* is retained.
*
* Note that it is possible that the simplification chooses a different
* TREESAME parent from the default, in which case this test doesn't
* activate, and we _do_ drop the default parent. Example:
*
* I------X A modified the file, but it was reverted in B,
* \ / meaning mainline merge X is TREESAME to both
* *A-*B parents.
*
* Default log would produce "I" by following the first parent;
* --full-history --simplify-merges will produce "I-A-B". But this is a
* reasonable result - it presents a logical full history leading from
* I to X, and X is not an important merge.
*/
if (!unmarked && marked) {
marked->object.flags &= ~TMP_MARK;
return 1;
}
return 0;
}
static int remove_marked_parents(struct rev_info *revs, struct commit *commit)
{
struct commit_list **pp, *p;
int nth_parent, removed = 0;
pp = &commit->parents;
nth_parent = 0;
while ((p = *pp) != NULL) {
struct commit *parent = p->item;
if (parent->object.flags & TMP_MARK) {
parent->object.flags &= ~TMP_MARK;
*pp = p->next;
free(p);
removed++;
compact_treesame(revs, commit, nth_parent);
continue;
}
pp = &p->next;
nth_parent++;
}
/* Removing parents can only increase TREESAMEness */
if (removed && !(commit->object.flags & TREESAME))
update_treesame(revs, commit);
return nth_parent;
}
static struct commit_list **simplify_one(struct rev_info *revs, struct commit *commit, struct commit_list **tail)
{
struct commit_list *p;
struct commit *parent;
struct merge_simplify_state *st, *pst;
int cnt;
st = locate_simplify_state(revs, commit);
/*
* Have we handled this one?
*/
if (st->simplified)
return tail;
/*
* An UNINTERESTING commit simplifies to itself, so does a
* root commit. We do not rewrite parents of such commit
* anyway.
*/
if ((commit->object.flags & UNINTERESTING) || !commit->parents) {
st->simplified = commit;
return tail;
}
/*
* Do we know what commit all of our parents that matter
* should be rewritten to? Otherwise we are not ready to
* rewrite this one yet.
*/
for (cnt = 0, p = commit->parents; p; p = p->next) {
pst = locate_simplify_state(revs, p->item);
if (!pst->simplified) {
tail = &commit_list_insert(p->item, tail)->next;
cnt++;
}
if (revs->first_parent_only)
break;
}
if (cnt) {
tail = &commit_list_insert(commit, tail)->next;
return tail;
}
/*
* Rewrite our list of parents. Note that this cannot
* affect our TREESAME flags in any way - a commit is
* always TREESAME to its simplification.
*/
for (p = commit->parents; p; p = p->next) {
pst = locate_simplify_state(revs, p->item);
p->item = pst->simplified;
if (revs->first_parent_only)
break;
}
if (revs->first_parent_only)
cnt = 1;
else
cnt = remove_duplicate_parents(revs, commit);
/*
* It is possible that we are a merge and one side branch
* does not have any commit that touches the given paths;
* in such a case, the immediate parent from that branch
* will be rewritten to be the merge base.
*
* o----X X: the commit we are looking at;
* / / o: a commit that touches the paths;
* ---o----'
*
* Further, a merge of an independent branch that doesn't
* touch the path will reduce to a treesame root parent:
*
* ----o----X X: the commit we are looking at;
* / o: a commit that touches the paths;
* r r: a root commit not touching the paths
*
* Detect and simplify both cases.
*/
if (1 < cnt) {
int marked = mark_redundant_parents(revs, commit);
marked += mark_treesame_root_parents(revs, commit);
if (marked)
marked -= leave_one_treesame_to_parent(revs, commit);
if (marked)
cnt = remove_marked_parents(revs, commit);
}
/*
* A commit simplifies to itself if it is a root, if it is
* UNINTERESTING, if it touches the given paths, or if it is a
* merge and its parents don't simplify to one relevant commit
* (the first two cases are already handled at the beginning of
* this function).
*
* Otherwise, it simplifies to what its sole relevant parent
* simplifies to.
*/
if (!cnt ||
(commit->object.flags & UNINTERESTING) ||
!(commit->object.flags & TREESAME) ||
(parent = one_relevant_parent(revs, commit->parents)) == NULL)
st->simplified = commit;
else {
pst = locate_simplify_state(revs, parent);
st->simplified = pst->simplified;
}
return tail;
}
static void simplify_merges(struct rev_info *revs)
{
struct commit_list *list, *next;
struct commit_list *yet_to_do, **tail;
struct commit *commit;
if (!revs->prune)
return;
/* feed the list reversed */
yet_to_do = NULL;
for (list = revs->commits; list; list = next) {
commit = list->item;
next = list->next;
/*
* Do not free(list) here yet; the original list
* is used later in this function.
*/
commit_list_insert(commit, &yet_to_do);
}
while (yet_to_do) {
list = yet_to_do;
yet_to_do = NULL;
tail = &yet_to_do;
while (list) {
commit = pop_commit(&list);
tail = simplify_one(revs, commit, tail);
}
}
/* clean up the result, removing the simplified ones */
list = revs->commits;
revs->commits = NULL;
tail = &revs->commits;
while (list) {
struct merge_simplify_state *st;
commit = pop_commit(&list);
st = locate_simplify_state(revs, commit);
if (st->simplified == commit)
tail = &commit_list_insert(commit, tail)->next;
}
}
static void set_children(struct rev_info *revs)
{
struct commit_list *l;
for (l = revs->commits; l; l = l->next) {
struct commit *commit = l->item;
struct commit_list *p;
for (p = commit->parents; p; p = p->next)
add_child(revs, p->item, commit);
}
}
void reset_revision_walk(void)
{
clear_object_flags(SEEN | ADDED | SHOWN);
}
int prepare_revision_walk(struct rev_info *revs)
{
int i;
struct object_array old_pending;
struct commit_list **next = &revs->commits;
memcpy(&old_pending, &revs->pending, sizeof(old_pending));
revs->pending.nr = 0;
revs->pending.alloc = 0;
revs->pending.objects = NULL;
for (i = 0; i < old_pending.nr; i++) {
struct object_array_entry *e = old_pending.objects + i;
struct commit *commit = handle_commit(revs, e);
if (commit) {
if (!(commit->object.flags & SEEN)) {
commit->object.flags |= SEEN;
next = commit_list_append(commit, next);
}
}
}
if (!revs->leak_pending)
object_array_clear(&old_pending);
/* Signal whether we need per-parent treesame decoration */
if (revs->simplify_merges ||
(revs->limited && limiting_can_increase_treesame(revs)))
revs->treesame.name = "treesame";
if (revs->no_walk != REVISION_WALK_NO_WALK_UNSORTED)
commit_list_sort_by_date(&revs->commits);
if (revs->no_walk)
return 0;
if (revs->limited)
if (limit_list(revs) < 0)
return -1;
if (revs->topo_order)
sort_in_topological_order(&revs->commits, revs->sort_order);
if (revs->line_level_traverse)
line_log_filter(revs);
if (revs->simplify_merges)
simplify_merges(revs);
if (revs->children.name)
set_children(revs);
return 0;
}
static enum rewrite_result rewrite_one(struct rev_info *revs, struct commit **pp)
{
struct commit_list *cache = NULL;
for (;;) {
struct commit *p = *pp;
if (!revs->limited)
if (add_parents_to_list(revs, p, &revs->commits, &cache) < 0)
return rewrite_one_error;
if (p->object.flags & UNINTERESTING)
return rewrite_one_ok;
if (!(p->object.flags & TREESAME))
return rewrite_one_ok;
if (!p->parents)
return rewrite_one_noparents;
if ((p = one_relevant_parent(revs, p->parents)) == NULL)
return rewrite_one_ok;
*pp = p;
}
}
int rewrite_parents(struct rev_info *revs, struct commit *commit,
rewrite_parent_fn_t rewrite_parent)
{
struct commit_list **pp = &commit->parents;
while (*pp) {
struct commit_list *parent = *pp;
switch (rewrite_parent(revs, &parent->item)) {
case rewrite_one_ok:
break;
case rewrite_one_noparents:
*pp = parent->next;
continue;
case rewrite_one_error:
return -1;
}
pp = &parent->next;
}
remove_duplicate_parents(revs, commit);
return 0;
}
static int commit_rewrite_person(struct strbuf *buf, const char *what, struct string_list *mailmap)
{
char *person, *endp;
size_t len, namelen, maillen;
const char *name;
const char *mail;
struct ident_split ident;
person = strstr(buf->buf, what);
if (!person)
return 0;
person += strlen(what);
endp = strchr(person, '\n');
if (!endp)
return 0;
len = endp - person;
if (split_ident_line(&ident, person, len))
return 0;
mail = ident.mail_begin;
maillen = ident.mail_end - ident.mail_begin;
name = ident.name_begin;
namelen = ident.name_end - ident.name_begin;
if (map_user(mailmap, &mail, &maillen, &name, &namelen)) {
struct strbuf namemail = STRBUF_INIT;
strbuf_addf(&namemail, "%.*s <%.*s>",
(int)namelen, name, (int)maillen, mail);
strbuf_splice(buf, ident.name_begin - buf->buf,
ident.mail_end - ident.name_begin + 1,
namemail.buf, namemail.len);
strbuf_release(&namemail);
return 1;
}
return 0;
}
static int commit_match(struct commit *commit, struct rev_info *opt)
{
int retval;
const char *encoding;
const char *message;
struct strbuf buf = STRBUF_INIT;
if (!opt->grep_filter.pattern_list && !opt->grep_filter.header_list)
return 1;
/* Prepend "fake" headers as needed */
if (opt->grep_filter.use_reflog_filter) {
strbuf_addstr(&buf, "reflog ");
get_reflog_message(&buf, opt->reflog_info);
strbuf_addch(&buf, '\n');
}
/*
* We grep in the user's output encoding, under the assumption that it
* is the encoding they are most likely to write their grep pattern
* for. In addition, it means we will match the "notes" encoding below,
* so we will not end up with a buffer that has two different encodings
* in it.
*/
encoding = get_log_output_encoding();
message = logmsg_reencode(commit, NULL, encoding);
/* Copy the commit to temporary if we are using "fake" headers */
if (buf.len)
strbuf_addstr(&buf, message);
if (opt->grep_filter.header_list && opt->mailmap) {
if (!buf.len)
strbuf_addstr(&buf, message);
commit_rewrite_person(&buf, "\nauthor ", opt->mailmap);
commit_rewrite_person(&buf, "\ncommitter ", opt->mailmap);
}
/* Append "fake" message parts as needed */
if (opt->show_notes) {
if (!buf.len)
strbuf_addstr(&buf, message);
format_display_notes(&commit->object.oid, &buf, encoding, 1);
}
/*
* Find either in the original commit message, or in the temporary.
* Note that we cast away the constness of "message" here. It is
* const because it may come from the cached commit buffer. That's OK,
* because we know that it is modifiable heap memory, and that while
* grep_buffer may modify it for speed, it will restore any
* changes before returning.
*/
if (buf.len)
retval = grep_buffer(&opt->grep_filter, buf.buf, buf.len);
else
retval = grep_buffer(&opt->grep_filter,
(char *)message, strlen(message));
strbuf_release(&buf);
unuse_commit_buffer(commit, message);
return opt->invert_grep ? !retval : retval;
}
static inline int want_ancestry(const struct rev_info *revs)
{
return (revs->rewrite_parents || revs->children.name);
}
/*
* Return a timestamp to be used for --since/--until comparisons for this
* commit, based on the revision options.
*/
static timestamp_t comparison_date(const struct rev_info *revs,
struct commit *commit)
{
return revs->reflog_info ?
get_reflog_timestamp(revs->reflog_info) :
commit->date;
}
enum commit_action get_commit_action(struct rev_info *revs, struct commit *commit)
{
if (commit->object.flags & SHOWN)
return commit_ignore;
if (revs->unpacked && has_sha1_pack(commit->object.oid.hash))
return commit_ignore;
if (revs->show_all)
return commit_show;
if (commit->object.flags & UNINTERESTING)
return commit_ignore;
if (revs->min_age != -1 &&
comparison_date(revs, commit) > revs->min_age)
return commit_ignore;
if (revs->min_parents || (revs->max_parents >= 0)) {
int n = commit_list_count(commit->parents);
if ((n < revs->min_parents) ||
((revs->max_parents >= 0) && (n > revs->max_parents)))
return commit_ignore;
}
if (!commit_match(commit, revs))
return commit_ignore;
if (revs->prune && revs->dense) {
/* Commit without changes? */
if (commit->object.flags & TREESAME) {
int n;
struct commit_list *p;
/* drop merges unless we want parenthood */
if (!want_ancestry(revs))
return commit_ignore;
/*
* If we want ancestry, then need to keep any merges
* between relevant commits to tie together topology.
* For consistency with TREESAME and simplification
* use "relevant" here rather than just INTERESTING,
* to treat bottom commit(s) as part of the topology.
*/
for (n = 0, p = commit->parents; p; p = p->next)
if (relevant_commit(p->item))
if (++n >= 2)
return commit_show;
return commit_ignore;
}
}
return commit_show;
}
define_commit_slab(saved_parents, struct commit_list *);
#define EMPTY_PARENT_LIST ((struct commit_list *)-1)
/*
* You may only call save_parents() once per commit (this is checked
* for non-root commits).
*/
static void save_parents(struct rev_info *revs, struct commit *commit)
{
struct commit_list **pp;
if (!revs->saved_parents_slab) {
revs->saved_parents_slab = xmalloc(sizeof(struct saved_parents));
init_saved_parents(revs->saved_parents_slab);
}
pp = saved_parents_at(revs->saved_parents_slab, commit);
/*
* When walking with reflogs, we may visit the same commit
* several times: once for each appearance in the reflog.
*
* In this case, save_parents() will be called multiple times.
* We want to keep only the first set of parents. We need to
* store a sentinel value for an empty (i.e., NULL) parent
* list to distinguish it from a not-yet-saved list, however.
*/
if (*pp)
return;
if (commit->parents)
*pp = copy_commit_list(commit->parents);
else
*pp = EMPTY_PARENT_LIST;
}
static void free_saved_parents(struct rev_info *revs)
{
if (revs->saved_parents_slab)
clear_saved_parents(revs->saved_parents_slab);
}
struct commit_list *get_saved_parents(struct rev_info *revs, const struct commit *commit)
{
struct commit_list *parents;
if (!revs->saved_parents_slab)
return commit->parents;
parents = *saved_parents_at(revs->saved_parents_slab, commit);
if (parents == EMPTY_PARENT_LIST)
return NULL;
return parents;
}
enum commit_action simplify_commit(struct rev_info *revs, struct commit *commit)
{
enum commit_action action = get_commit_action(revs, commit);
if (action == commit_show &&
!revs->show_all &&
revs->prune && revs->dense && want_ancestry(revs)) {
/*
* --full-diff on simplified parents is no good: it
* will show spurious changes from the commits that
* were elided. So we save the parents on the side
* when --full-diff is in effect.
*/
if (revs->full_diff)
save_parents(revs, commit);
if (rewrite_parents(revs, commit, rewrite_one) < 0)
return commit_error;
}
return action;
}
static void track_linear(struct rev_info *revs, struct commit *commit)
{
if (revs->track_first_time) {
revs->linear = 1;
revs->track_first_time = 0;
} else {
struct commit_list *p;
for (p = revs->previous_parents; p; p = p->next)
if (p->item == NULL || /* first commit */
!oidcmp(&p->item->object.oid, &commit->object.oid))
break;
revs->linear = p != NULL;
}
if (revs->reverse) {
if (revs->linear)
commit->object.flags |= TRACK_LINEAR;
}
free_commit_list(revs->previous_parents);
revs->previous_parents = copy_commit_list(commit->parents);
}
static struct commit *get_revision_1(struct rev_info *revs)
{
while (1) {
struct commit *commit;
if (revs->reflog_info)
commit = next_reflog_entry(revs->reflog_info);
else
commit = pop_commit(&revs->commits);
if (!commit)
return NULL;
if (revs->reflog_info)
commit->object.flags &= ~(ADDED | SEEN | SHOWN);
/*
* If we haven't done the list limiting, we need to look at
* the parents here. We also need to do the date-based limiting
* that we'd otherwise have done in limit_list().
*/
if (!revs->limited) {
if (revs->max_age != -1 &&
comparison_date(revs, commit) < revs->max_age)
continue;
if (revs->reflog_info)
try_to_simplify_commit(revs, commit);
else if (add_parents_to_list(revs, commit, &revs->commits, NULL) < 0) {
if (!revs->ignore_missing_links)
die("Failed to traverse parents of commit %s",
oid_to_hex(&commit->object.oid));
}
}
switch (simplify_commit(revs, commit)) {
case commit_ignore:
continue;
case commit_error:
die("Failed to simplify parents of commit %s",
oid_to_hex(&commit->object.oid));
default:
if (revs->track_linear)
track_linear(revs, commit);
return commit;
}
}
}
/*
* Return true for entries that have not yet been shown. (This is an
* object_array_each_func_t.)
*/
static int entry_unshown(struct object_array_entry *entry, void *cb_data_unused)
{
return !(entry->item->flags & SHOWN);
}
/*
* If array is on the verge of a realloc, garbage-collect any entries
* that have already been shown to try to free up some space.
*/
static void gc_boundary(struct object_array *array)
{
if (array->nr == array->alloc)
object_array_filter(array, entry_unshown, NULL);
}
static void create_boundary_commit_list(struct rev_info *revs)
{
unsigned i;
struct commit *c;
struct object_array *array = &revs->boundary_commits;
struct object_array_entry *objects = array->objects;
/*
* If revs->commits is non-NULL at this point, an error occurred in
* get_revision_1(). Ignore the error and continue printing the
* boundary commits anyway. (This is what the code has always
* done.)
*/
if (revs->commits) {
free_commit_list(revs->commits);
revs->commits = NULL;
}
/*
* Put all of the actual boundary commits from revs->boundary_commits
* into revs->commits
*/
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 | BOUNDARY))
continue;
c->object.flags |= BOUNDARY;
commit_list_insert(c, &revs->commits);
}
/*
* If revs->topo_order is set, sort the boundary commits
* in topological order
*/
sort_in_topological_order(&revs->commits, revs->sort_order);
}
static struct commit *get_revision_internal(struct rev_info *revs)
{
struct commit *c = NULL;
struct commit_list *l;
if (revs->boundary == 2) {
/*
* All of the normal commits have already been returned,
* and we are now returning boundary commits.
* create_boundary_commit_list() has populated
* revs->commits with the remaining commits to return.
*/
c = pop_commit(&revs->commits);
if (c)
c->object.flags |= SHOWN;
return c;
}
/*
* If our max_count counter has reached zero, then we are done. We
* don't simply return NULL because we still might need to show
* boundary commits. But we want to avoid calling get_revision_1, which
* might do a considerable amount of work finding the next commit only
* for us to throw it away.
*
* If it is non-zero, then either we don't have a max_count at all
* (-1), or it is still counting, in which case we decrement.
*/
if (revs->max_count) {
c = get_revision_1(revs);
if (c) {
while (revs->skip_count > 0) {
revs->skip_count--;
c = get_revision_1(revs);
if (!c)
break;
}
}
if (revs->max_count > 0)
revs->max_count--;
}
if (c)
c->object.flags |= SHOWN;
if (!revs->boundary)
return c;
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;
/*
* Update revs->commits to contain the list of
* boundary commits.
*/
create_boundary_commit_list(revs);
return get_revision_internal(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;
}
struct commit *get_revision(struct rev_info *revs)
{
struct commit *c;
struct commit_list *reversed;
if (revs->reverse) {
reversed = NULL;
while ((c = get_revision_internal(revs)))
commit_list_insert(c, &reversed);
revs->commits = reversed;
revs->reverse = 0;
revs->reverse_output_stage = 1;
}
if (revs->reverse_output_stage) {
c = pop_commit(&revs->commits);
if (revs->track_linear)
revs->linear = !!(c && c->object.flags & TRACK_LINEAR);
return c;
}
c = get_revision_internal(revs);
if (c && revs->graph)
graph_update(revs->graph, c);
if (!c) {
free_saved_parents(revs);
if (revs->previous_parents) {
free_commit_list(revs->previous_parents);
revs->previous_parents = NULL;
}
}
return c;
}
char *get_revision_mark(const struct rev_info *revs, const struct commit *commit)
{
if (commit->object.flags & BOUNDARY)
return "-";
else if (commit->object.flags & UNINTERESTING)
return "^";
else if (commit->object.flags & PATCHSAME)
return "=";
else if (!revs || revs->left_right) {
if (commit->object.flags & SYMMETRIC_LEFT)
return "<";
else
return ">";
} else if (revs->graph)
return "*";
else if (revs->cherry_mark)
return "+";
return "";
}
void put_revision_mark(const struct rev_info *revs, const struct commit *commit)
{
char *mark = get_revision_mark(revs, commit);
if (!strlen(mark))
return;
fputs(mark, stdout);
putchar(' ');
}
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