std::u32string StringToUTF32(const StringView str)
{
if (str.empty())
{
return std::u32string();
}
const wchar* begin = &str[0];
const wchar* end = begin + str.length();
if (const auto length = detail::CountCodePoints(begin, end))
{
std::u32string result(length.value(), L'\0');
while (begin != end)
{
const auto ch = *begin++;
if (!IsUTF16Surrogate(ch))
{
result.push_back(ch);
}
else
{
result.push_back(SurrogateToUTF32(ch, *begin++));
}
}
return result;
}
else
{
return std::u32string();
}
}
void Write(StringView data)
{
NEPTOOLS_CHECK(SinkOverflow, offset+buf_put+data.length() <= size,
"Sink overflow during write");
auto cp = std::min(data.length(), size_t(buf_size - buf_put));
memcpy(buf+buf_put, data.data(), cp);
data.remove_prefix(cp);
buf_put += cp;
if (!data.empty()) Write_(data);
}
void ExtractProtocol::execute(Pos data, size_t size, Pos & res_data, size_t & res_size)
{
res_data = data;
res_size = 0;
StringView scheme = getURLScheme(StringView(data, size));
Pos pos = data + scheme.size();
if (scheme.empty() || (data + size) - pos < 4)
return;
if (pos[0] == ':')
res_size = pos - data;
}
bool AbstractParser::evalSpecialCommandMap(StringView args)
{
if (args.empty())
return false;
auto first = args.takeFirstWord();
auto &map = m_specialCommandMap;
const std::string key = first.toQString().toStdString();
auto it = map.find(key);
if (it == map.end())
return false;
// REVISIT: add # of calls to the record?
ParserRecord &rec = it->second;
const auto qs = QString::fromStdString(rec.fullCommand);
const auto matched = std::vector<StringView>{StringView{qs}};
return rec.callback(matched, args);
}
inline bool requiresNameAnnounced(const StringView &from_name,
const StringView &from_ref,
const StringView &from_pronunciation,
const StringView &from_exits,
const StringView &to_name,
const StringView &to_ref,
const StringView &to_pronunciation,
const StringView &to_exits,
const SuffixTable &suffix_table)
{
// first is empty and the second is not
if ((from_name.empty() && from_ref.empty()) && !(to_name.empty() && to_ref.empty()))
return true;
// FIXME, handle in profile to begin with?
// Input for this function should be a struct separating streetname, suffix (e.g. road,
// boulevard, North, West ...), and a list of references
// check similarity of names
const auto names_are_empty = from_name.empty() && to_name.empty();
const auto name_is_contained =
boost::starts_with(from_name, to_name) || boost::starts_with(to_name, from_name);
const auto checkForPrefixOrSuffixChange =
[](const StringView &first, const StringView &second, const SuffixTable &suffix_table) {
std::string first_prefix, first_suffix, second_prefix, second_suffix;
std::tie(first_prefix, first_suffix, second_prefix, second_suffix) =
decompose(first, second);
const auto checkTable = [&](const std::string &str) {
return str.empty() || suffix_table.isSuffix(str);
};
return checkTable(first_prefix) && checkTable(first_suffix) &&
checkTable(second_prefix) && checkTable(second_suffix);
};
const auto is_suffix_change = checkForPrefixOrSuffixChange(from_name, to_name, suffix_table);
const auto names_are_equal = from_name == to_name || name_is_contained || is_suffix_change;
const auto name_is_removed = !from_name.empty() && to_name.empty();
// references are contained in one another
const auto refs_are_empty = from_ref.empty() && to_ref.empty();
const auto ref_is_contained =
from_ref.empty() || to_ref.empty() ||
(from_ref.find(to_ref) != std::string::npos || to_ref.find(from_ref) != std::string::npos);
const auto ref_is_removed = !from_ref.empty() && to_ref.empty();
const auto obvious_change =
(names_are_empty && refs_are_empty) || (names_are_equal && ref_is_contained) ||
(names_are_equal && refs_are_empty) || (ref_is_contained && name_is_removed) ||
(names_are_equal && ref_is_removed) || is_suffix_change;
const auto needs_announce =
// " (Ref)" -> "Name " and reverse
(from_name.empty() && !from_ref.empty() && !to_name.empty() && to_ref.empty()) ||
(!from_name.empty() && from_ref.empty() && to_name.empty() && !to_ref.empty());
const auto pronunciation_changes = from_pronunciation != to_pronunciation;
// when exiting onto ramps, we need to be careful about exit numbers. These can often be only
// assigned to the first part of the ramp
//
// a . . b . c . . d
// ` e . . f
//
// could assign the exit number to `be` when exiting `abcd` instead of the full ramp.
//
// Issuing a new-name instruction here would result in the turn assuming the short segment to be
// irrelevant and remove the exit number in a collapse scenario. We don't want to issue any
// instruction from be-ef, since we only loose the exit number. So we want to make sure that we
// don't just loose an exit number, when exits change
const auto exits_change = from_exits != to_exits;
const auto looses_exit = (names_are_equal && !from_exits.empty() && to_exits.empty());
return !obvious_change || needs_announce || pronunciation_changes ||
(exits_change && !looses_exit);
}