void Column<Float>::set(Int row_id, const Datum &datum) {
Float new_value = parse_datum(datum);
if (!table_->test_row(row_id)) {
throw "Invalid row ID"; // TODO
}
if (new_value.is_na()) {
unset(row_id);
return;
}
Float old_value = get(row_id);
if (old_value.match(new_value)) {
return;
}
if (!old_value.is_na()) {
// Remove the old value from indexes.
for (size_t i = 0; i < num_indexes(); ++i) {
indexes_[i]->remove(row_id, old_value);
}
}
size_t value_id = row_id.raw();
if (value_id >= values_.size()) {
values_.resize(value_id + 1, Float::na());
}
// Insert the new value into indexes.
for (size_t i = 0; i < num_indexes(); ++i) try {
indexes_[i]->insert(row_id, datum);
} catch (...) {
for (size_t j = 0; j < i; ++i) {
indexes_[j]->remove(row_id, datum);
}
throw;
}
values_[value_id] = new_value;
}
static void
garmin_txt_read(void)
{
char *buff;
current_line = 0;
while ((buff = gbfgetstr(fin))) {
char *cin;
if ((current_line++ == 0) && fin->unicode) cet_convert_init(CET_CHARSET_UTF8, 1);
cin = lrtrim(buff);
if (*cin == '\0') continue;
cin = csv_lineparse(cin, "\t", "", 0);
if (cin == NULL) continue;
if (case_ignore_strcmp(cin, "Header") == 0) parse_header();
else if (case_ignore_strcmp(cin, "Grid") == 0) parse_grid();
else if (case_ignore_strcmp(cin, "Datum") == 0) parse_datum();
else if (case_ignore_strcmp(cin, "Waypoint") == 0) parse_waypoint();
else if (case_ignore_strcmp(cin, "Route Waypoint") == 0) parse_route_waypoint();
else if (case_ignore_strcmp(cin, "Trackpoint") == 0) parse_track_waypoint();
else if (case_ignore_strcmp(cin, "Route") == 0) parse_route_header();
else if (case_ignore_strcmp(cin, "Track") == 0) parse_track_header();
else if (case_ignore_strcmp(cin, "Map") == 0) /* do nothing */ ;
else
fatal(MYNAME ": Unknwon identifier (%s) at line %d!\n", cin, current_line);
/* flush pending data */
while (csv_lineparse(NULL, "\t", "", 0));
}
}
Int Column<Float>::find_one(const Datum &datum) const {
// TODO: Choose the best index.
Float value = parse_datum(datum);
if (!value.is_na() && !indexes_.is_empty()) {
return indexes_[0]->find_one(datum);
}
return scan(value);
}
bool Column<Float>::contains(const Datum &datum) const {
// TODO: Choose the best index.
Float value = parse_datum(datum);
if (!indexes_.is_empty()) {
if (value.is_na()) {
return table_->num_rows() != indexes_[0]->num_entries();
}
return indexes_[0]->contains(datum);
}
return !scan(value).is_na();
}
void Column<Vector<GeoPoint>>::set(Int row_id, const Datum &datum) {
Vector<GeoPoint> new_value = parse_datum(datum);
if (!table_->test_row(row_id)) {
throw "Invalid row ID"; // TODO
}
if (new_value.is_na()) {
unset(row_id);
return;
}
Vector<GeoPoint> old_value = get(row_id);
if (old_value.match(new_value)) {
return;
}
if (!old_value.is_na()) {
// TODO: Remove the old value from indexes.
// for (size_t i = 0; i < num_indexes(); ++i) {
// indexes_[i]->remove(row_id, old_value);
// }
}
size_t value_id = row_id.raw();
if (value_id >= headers_.size()) {
headers_.resize(value_id + 1, na_header());
}
// TODO: Insert the new value into indexes.
// for (size_t i = 0; i < num_indexes(); ++i) try {
// indexes_[i]->insert(row_id, datum)) {
// } catch (...) {
// for (size_t j = 0; j < i; ++i) {
// indexes_[j]->remove(row_id, datum);
// }
// throw;
// }
// TODO: Error handling.
size_t offset = bodies_.size();
size_t size = new_value.raw_size();
uint64_t header;
if (size < 0xFFFF) {
bodies_.resize(offset + size);
std::memcpy(&bodies_[offset], new_value.raw_data(),
sizeof(GeoPoint) * size);
header = (offset << 16) | size;
} else {
// The size of a long vector is stored in front of the body.
if ((offset % sizeof(uint64_t)) != 0) {
offset += sizeof(uint64_t) - (offset % sizeof(uint64_t));
}
bodies_.resize(offset + sizeof(uint64_t) + size);
*reinterpret_cast<uint64_t *>(&bodies_[offset]) = size;
std::memcpy(&bodies_[offset + sizeof(uint64_t)],
new_value.raw_data(), sizeof(GeoPoint) * size);
header = (offset << 16) | 0xFFFF;
}
headers_[value_id] = header;
}
Int Column<Vector<GeoPoint>>::find_one(const Datum &datum) const {
// TODO: Use an index if exists.
return scan(parse_datum(datum));
}
bool Column<Vector<GeoPoint>>::contains(const Datum &datum) const {
// TODO: Use an index if exists.
return !scan(parse_datum(datum)).is_na();
}
