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database_info: prioritize scanning cue/gdi files

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Scan them before the tracks so we can avoid scanning large
files we don't need to.
This commit is contained in:
Brian Koropoff 2017-09-17 19:17:10 -07:00
parent 46e78e9d1b
commit 93d05665c2
1 changed files with 27 additions and 0 deletions
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27
database_info.c
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@ -398,6 +398,31 @@ static int database_cursor_close(libretrodb_t *db, libretrodb_cursor_t *cur)
return 0;
}
static bool type_is_prioritized(enum msg_file_type type)
{
return (type == FILE_TYPE_CUE || type == FILE_TYPE_GDI);
}
static enum msg_file_type file_type(const char *path)
{
return msg_hash_to_file_type(msg_hash_calculate(path_get_extension(path)));
}
static int dir_entry_compare(const void *left, const void *right)
{
const struct string_list_elem *le = left;
const struct string_list_elem *re = right;
bool l = type_is_prioritized(file_type(le->data));
bool r = type_is_prioritized(file_type(re->data));
return (int) r - (int) l;
}
static void dir_list_prioritize(struct string_list *list)
{
qsort(list->elems, list->size, sizeof(*list->elems), dir_entry_compare);
}
database_info_handle_t *database_info_dir_init(const char *dir,
enum database_type type, retro_task_t *task)
{
@ -413,6 +438,8 @@ database_info_handle_t *database_info_dir_init(const char *dir,
if (!db->list)
goto error;
dir_list_prioritize(db->list);
db->list_ptr = 0;
db->status = DATABASE_STATUS_ITERATE;
db->type = type;