#include "commit.h"
#include "tree.h"
#include "blob.h"
-#include "epoch.h"
#include "diff.h"
#include "revision.h"
-/* bits #0 and #1 in revision.h */
+/* bits #0-4 in revision.h */
-#define COUNTED (1u << 2)
-#define SHOWN (1u << 3)
-#define TREECHANGE (1u << 4)
-#define TMP_MARK (1u << 5) /* for isolated cases; clean after use */
+#define COUNTED (1u<<5)
static const char rev_list_usage[] =
"git-rev-list [OPTION] <commit-id>... [ -- paths... ]\n"
" --remove-empty\n"
" --all\n"
" ordering output:\n"
-" --merge-order [ --show-breaks ]\n"
" --topo-order\n"
" --date-order\n"
" formatting output:\n"
struct rev_info revs;
-static int unpacked = 0;
static int bisect_list = 0;
static int verbose_header = 0;
static int abbrev = DEFAULT_ABBREV;
static int hdr_termination = 0;
static const char *commit_prefix = "";
static enum cmit_fmt commit_format = CMIT_FMT_RAW;
-static int merge_order = 0;
-static int show_breaks = 0;
-static int stop_traversal = 0;
-static int no_merges = 0;
static void show_commit(struct commit *commit)
{
- commit->object.flags |= SHOWN;
- if (show_breaks) {
- commit_prefix = "| ";
- if (commit->object.flags & DISCONTINUITY) {
- commit_prefix = "^ ";
- } else if (commit->object.flags & BOUNDARY) {
- commit_prefix = "= ";
- }
- }
printf("%s%s", commit_prefix, sha1_to_hex(commit->object.sha1));
if (show_parents) {
struct commit_list *parents = commit->parents;
fflush(stdout);
}
-static int rewrite_one(struct commit **pp)
-{
- for (;;) {
- struct commit *p = *pp;
- if (p->object.flags & (TREECHANGE | UNINTERESTING))
- return 0;
- if (!p->parents)
- return -1;
- *pp = p->parents->item;
- }
-}
-
-static void rewrite_parents(struct commit *commit)
-{
- struct commit_list **pp = &commit->parents;
- while (*pp) {
- struct commit_list *parent = *pp;
- if (rewrite_one(&parent->item) < 0) {
- *pp = parent->next;
- continue;
- }
- pp = &parent->next;
- }
-}
-
-static int filter_commit(struct commit * commit)
-{
- if (stop_traversal && (commit->object.flags & BOUNDARY))
- return STOP;
- if (commit->object.flags & (UNINTERESTING|SHOWN))
- return CONTINUE;
- if (revs.min_age != -1 && (commit->date > revs.min_age))
- return CONTINUE;
- if (revs.max_age != -1 && (commit->date < revs.max_age)) {
- stop_traversal=1;
- return CONTINUE;
- }
- if (no_merges && (commit->parents && commit->parents->next))
- return CONTINUE;
- if (revs.paths && revs.dense) {
- if (!(commit->object.flags & TREECHANGE))
- return CONTINUE;
- rewrite_parents(commit);
- }
- return DO;
-}
-
-static int process_commit(struct commit * commit)
-{
- int action=filter_commit(commit);
-
- if (action == STOP) {
- return STOP;
- }
-
- if (action == CONTINUE) {
- return CONTINUE;
- }
-
- if (revs.max_count != -1 && !revs.max_count--)
- return STOP;
-
- show_commit(commit);
-
- return CONTINUE;
-}
-
static struct object_list **process_blob(struct blob *blob,
struct object_list **p,
struct name_path *path,
return p;
}
-static struct object_list *pending_objects = NULL;
-
-static void show_commit_list(struct commit_list *list)
+static void show_commit_list(struct rev_info *revs)
{
+ struct commit *commit;
struct object_list *objects = NULL, **p = &objects, *pending;
- while (list) {
- struct commit *commit = pop_most_recent_commit(&list, SEEN);
+ while ((commit = get_revision(revs)) != NULL) {
p = process_tree(commit->tree, p, NULL, "");
- if (process_commit(commit) == STOP)
- break;
+ show_commit(commit);
}
- for (pending = pending_objects; pending; pending = pending->next) {
+ for (pending = revs->pending_objects; pending; pending = pending->next) {
struct object *obj = pending->item;
const char *name = pending->name;
if (obj->flags & (UNINTERESTING | SEEN))
}
}
-static int everybody_uninteresting(struct commit_list *orig)
-{
- struct commit_list *list = orig;
- while (list) {
- struct commit *commit = list->item;
- list = list->next;
- if (commit->object.flags & UNINTERESTING)
- continue;
- return 0;
- }
- return 1;
-}
-
/*
* This is a truly stupid algorithm, but it's only
* used for bisection, and we just don't care enough.
}
}
-#define TREE_SAME 0
-#define TREE_NEW 1
-#define TREE_DIFFERENT 2
-static int tree_difference = TREE_SAME;
-
-static void file_add_remove(struct diff_options *options,
- int addremove, unsigned mode,
- const unsigned char *sha1,
- const char *base, const char *path)
-{
- int diff = TREE_DIFFERENT;
-
- /*
- * Is it an add of a new file? It means that
- * the old tree didn't have it at all, so we
- * will turn "TREE_SAME" -> "TREE_NEW", but
- * leave any "TREE_DIFFERENT" alone (and if
- * it already was "TREE_NEW", we'll keep it
- * "TREE_NEW" of course).
- */
- if (addremove == '+') {
- diff = tree_difference;
- if (diff != TREE_SAME)
- return;
- diff = TREE_NEW;
- }
- tree_difference = diff;
-}
-
-static void file_change(struct diff_options *options,
- unsigned old_mode, unsigned new_mode,
- const unsigned char *old_sha1,
- const unsigned char *new_sha1,
- const char *base, const char *path)
-{
- tree_difference = TREE_DIFFERENT;
-}
-
-static struct diff_options diff_opt = {
- .recursive = 1,
- .add_remove = file_add_remove,
- .change = file_change,
-};
-
-static int compare_tree(struct tree *t1, struct tree *t2)
-{
- if (!t1)
- return TREE_NEW;
- if (!t2)
- return TREE_DIFFERENT;
- tree_difference = TREE_SAME;
- if (diff_tree_sha1(t1->object.sha1, t2->object.sha1, "", &diff_opt) < 0)
- return TREE_DIFFERENT;
- return tree_difference;
-}
-
-static int same_tree_as_empty(struct tree *t1)
-{
- int retval;
- void *tree;
- struct tree_desc empty, real;
-
- if (!t1)
- return 0;
-
- tree = read_object_with_reference(t1->object.sha1, "tree", &real.size, NULL);
- if (!tree)
- return 0;
- real.buf = tree;
-
- empty.buf = "";
- empty.size = 0;
-
- tree_difference = 0;
- retval = diff_tree(&empty, &real, "", &diff_opt);
- free(tree);
-
- return retval >= 0 && !tree_difference;
-}
-
-static void try_to_simplify_commit(struct commit *commit)
-{
- struct commit_list **pp, *parent;
-
- if (!commit->tree)
- return;
-
- if (!commit->parents) {
- if (!same_tree_as_empty(commit->tree))
- commit->object.flags |= TREECHANGE;
- return;
- }
-
- pp = &commit->parents;
- while ((parent = *pp) != NULL) {
- struct commit *p = parent->item;
-
- if (p->object.flags & UNINTERESTING) {
- pp = &parent->next;
- continue;
- }
-
- parse_commit(p);
- switch (compare_tree(p->tree, commit->tree)) {
- case TREE_SAME:
- parent->next = NULL;
- commit->parents = parent;
- return;
-
- case TREE_NEW:
- if (revs.remove_empty_trees && same_tree_as_empty(p->tree)) {
- *pp = parent->next;
- continue;
- }
- /* fallthrough */
- case TREE_DIFFERENT:
- pp = &parent->next;
- continue;
- }
- die("bad tree compare for commit %s", sha1_to_hex(commit->object.sha1));
- }
- commit->object.flags |= TREECHANGE;
-}
-
-static void add_parents_to_list(struct commit *commit, struct commit_list **list)
-{
- struct commit_list *parent = commit->parents;
-
- /*
- * 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;
- parse_commit(p);
- p->object.flags |= UNINTERESTING;
- if (p->parents)
- mark_parents_uninteresting(p);
- if (p->object.flags & SEEN)
- continue;
- p->object.flags |= SEEN;
- insert_by_date(p, list);
- }
- return;
- }
-
- /*
- * 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.
- */
- if (revs.paths)
- try_to_simplify_commit(commit);
-
- parent = commit->parents;
- while (parent) {
- struct commit *p = parent->item;
-
- parent = parent->next;
-
- parse_commit(p);
- if (p->object.flags & SEEN)
- continue;
- p->object.flags |= SEEN;
- insert_by_date(p, list);
- }
-}
-
-static struct commit_list *limit_list(struct commit_list *list)
-{
- struct commit_list *newlist = NULL;
- struct commit_list **p = &newlist;
- while (list) {
- struct commit_list *entry = list;
- struct commit *commit = list->item;
- struct object *obj = &commit->object;
-
- list = list->next;
- free(entry);
-
- if (revs.max_age != -1 && (commit->date < revs.max_age))
- obj->flags |= UNINTERESTING;
- if (unpacked && has_sha1_pack(obj->sha1))
- obj->flags |= UNINTERESTING;
- add_parents_to_list(commit, &list);
- if (obj->flags & UNINTERESTING) {
- mark_parents_uninteresting(commit);
- if (everybody_uninteresting(list))
- break;
- continue;
- }
- if (revs.min_age != -1 && (commit->date > revs.min_age))
- continue;
- p = &commit_list_insert(commit, p)->next;
- }
- if (revs.tree_objects)
- mark_edges_uninteresting(newlist);
- if (bisect_list)
- newlist = find_bisection(newlist);
- return newlist;
-}
-
int main(int argc, const char **argv)
{
struct commit_list *list;
- int i, limited = 0;
+ int i;
- argc = setup_revisions(argc, argv, &revs);
+ argc = setup_revisions(argc, argv, &revs, NULL);
for (i = 1 ; i < argc; i++) {
const char *arg = argv[i];
commit_prefix = "commit ";
continue;
}
- if (!strncmp(arg, "--no-merges", 11)) {
- no_merges = 1;
- continue;
- }
if (!strcmp(arg, "--parents")) {
show_parents = 1;
continue;
bisect_list = 1;
continue;
}
- if (!strcmp(arg, "--unpacked")) {
- unpacked = 1;
- limited = 1;
- continue;
- }
- if (!strcmp(arg, "--merge-order")) {
- merge_order = 1;
- continue;
- }
- if (!strcmp(arg, "--show-breaks")) {
- show_breaks = 1;
- continue;
- }
usage(rev_list_usage);
}
list = revs.commits;
- if (list && list->next)
- limited = 1;
-
- if (revs.topo_order)
- limited = 1;
if (!list &&
(!(revs.tag_objects||revs.tree_objects||revs.blob_objects) && !revs.pending_objects))
usage(rev_list_usage);
- if (revs.paths) {
- limited = 1;
- diff_tree_setup_paths(revs.paths);
- }
- if (revs.max_age || revs.min_age)
- limited = 1;
+ prepare_revision_walk(&revs);
+ if (revs.tree_objects)
+ mark_edges_uninteresting(revs.commits);
+
+ if (bisect_list)
+ revs.commits = find_bisection(revs.commits);
save_commit_buffer = verbose_header;
track_object_refs = 0;
- if (!merge_order) {
- sort_by_date(&list);
- if (list && !limited && revs.max_count == 1 &&
- !revs.tag_objects && !revs.tree_objects && !revs.blob_objects) {
- show_commit(list->item);
- return 0;
- }
- if (limited)
- list = limit_list(list);
- if (revs.topo_order)
- sort_in_topological_order(&list, revs.lifo);
- show_commit_list(list);
- } else {
-#ifndef NO_OPENSSL
- if (sort_list_in_merge_order(list, &process_commit)) {
- die("merge order sort failed\n");
- }
-#else
- die("merge order sort unsupported, OpenSSL not linked");
-#endif
- }
+ show_commit_list(&revs);
return 0;
}