diff options
Diffstat (limited to 'shallow.c')
| -rw-r--r-- | shallow.c | 78 |
1 files changed, 78 insertions, 0 deletions
@@ -10,6 +10,8 @@ #include "diff.h" #include "revision.h" #include "commit-slab.h" +#include "revision.h" +#include "list-objects.h" static int is_shallow = -1; static struct stat_validity shallow_stat; @@ -137,6 +139,82 @@ struct commit_list *get_shallow_commits(struct object_array *heads, int depth, return result; } +static void show_commit(struct commit *commit, void *data) +{ + commit_list_insert(commit, data); +} + +/* + * Given rev-list arguments, run rev-list. All reachable commits + * except border ones are marked with not_shallow_flag. Border commits + * are marked with shallow_flag. The list of border/shallow commits + * are also returned. + */ +struct commit_list *get_shallow_commits_by_rev_list(int ac, const char **av, + int shallow_flag, + int not_shallow_flag) +{ + struct commit_list *result = NULL, *p; + struct commit_list *not_shallow_list = NULL; + struct rev_info revs; + int both_flags = shallow_flag | not_shallow_flag; + + /* + * SHALLOW (excluded) and NOT_SHALLOW (included) should not be + * set at this point. But better be safe than sorry. + */ + clear_object_flags(both_flags); + + is_repository_shallow(); /* make sure shallows are read */ + + init_revisions(&revs, NULL); + save_commit_buffer = 0; + setup_revisions(ac, av, &revs, NULL); + + if (prepare_revision_walk(&revs)) + die("revision walk setup failed"); + traverse_commit_list(&revs, show_commit, NULL, ¬_shallow_list); + + /* Mark all reachable commits as NOT_SHALLOW */ + for (p = not_shallow_list; p; p = p->next) + p->item->object.flags |= not_shallow_flag; + + /* + * mark border commits SHALLOW + NOT_SHALLOW. + * We cannot clear NOT_SHALLOW right now. Imagine border + * commit A is processed first, then commit B, whose parent is + * A, later. If NOT_SHALLOW on A is cleared at step 1, B + * itself is considered border at step 2, which is incorrect. + */ + for (p = not_shallow_list; p; p = p->next) { + struct commit *c = p->item; + struct commit_list *parent; + + if (parse_commit(c)) + die("unable to parse commit %s", + oid_to_hex(&c->object.oid)); + + for (parent = c->parents; parent; parent = parent->next) + if (!(parent->item->object.flags & not_shallow_flag)) { + c->object.flags |= shallow_flag; + commit_list_insert(c, &result); + break; + } + } + free_commit_list(not_shallow_list); + + /* + * Now we can clean up NOT_SHALLOW on border commits. Having + * both flags set can confuse the caller. + */ + for (p = result; p; p = p->next) { + struct object *o = &p->item->object; + if ((o->flags & both_flags) == both_flags) + o->flags &= ~not_shallow_flag; + } + return result; +} + static void check_shallow_file_for_update(void) { if (is_shallow == -1) |