-// Read the state back from the file descriptor made by make_tempfile,
-// and close it.
-CubemapStateProto read_tempfile(int state_fd)
-{
- if (lseek(state_fd, 0, SEEK_SET) == -1) {
- perror("lseek");
- exit(1);
- }
-
- string serialized;
- char buf[4096];
- for ( ;; ) {
- ssize_t ret = read(state_fd, buf, sizeof(buf));
- if (ret == -1) {
- perror("read");
- exit(1);
- }
- if (ret == 0) {
- // EOF.
- break;
- }
-
- serialized.append(string(buf, buf + ret));
- }
-
- close(state_fd); // Implicitly deletes the file.
-
- CubemapStateProto state;
- if (!state.ParseFromString(serialized)) {
- fprintf(stderr, "PANIC: Failed deserialization of state.\n");
- exit(1);
- }
-
- return state;
-}
-
-// Reuse mark pools if one already exists.
-MarkPool *get_mark_pool(map<pair<int, int>, MarkPool *> *mark_pools, int from, int to)
-{
- pair<int, int> mark_range(from, to);
- if (mark_pools->count(mark_range) != 0) {
- return (*mark_pools)[mark_range];
- }
-
- // Check if we're overlapping some other mark pool.
- for (map<pair<int, int>, MarkPool *>::const_iterator mp_it = mark_pools->begin();
- mp_it != mark_pools->end();
- ++mp_it) {
- int other_from = mp_it->first.first;
- int other_to = mp_it->first.second;
- if ((from >= other_from && from < other_to) ||
- (to >= other_from && to < other_to)) {
- fprintf(stderr, "WARNING: Mark pool %d-%d partially overlaps with %d-%d, you may get duplicate marks.\n",
- from, to, other_from, other_to);
- fprintf(stderr, " Mark pools must either be completely disjunct, or completely overlapping.\n");
- }
- }
-
- MarkPool *mark_pool = new MarkPool(from, to);
- mark_pools->insert(make_pair(mark_range, mark_pool));
- return mark_pool;
-}
-
-MarkPool *parse_mark_pool(map<pair<int, int>, MarkPool *> *mark_pools, const string &mark_str)
-{
- size_t split = mark_str.find_first_of('-');
- if (split == string::npos) {
- fprintf(stderr, "WARNING: Invalid mark specification '%s' (expected 'X-Y'), ignoring.\n",
- mark_str.c_str());
- return NULL;
- }
-
- string from_str(mark_str.begin(), mark_str.begin() + split);
- string to_str(mark_str.begin() + split + 1, mark_str.end());
- int from = atoi(from_str.c_str());
- int to = atoi(to_str.c_str());
-
- if (from <= 0 || from >= 65536 || to <= 0 || to >= 65536) {
- fprintf(stderr, "WARNING: Mark pool range %d-%d is outside legal range [1,65536>, ignoring.\n",
- from, to);
- return NULL;
- }
-
- return get_mark_pool(mark_pools, from, to);
-}
-