/**
* Tries to parse a relation as a turn restriction. This can fail for a number of
* reasons. The return type is a boost::optional<T>.
*
* Some restrictions can also be ignored: See the ```get_restrictions``` function
* in the corresponding profile. We use it for both namespacing restrictions, as in
* restriction:motorcar as well as whitelisting if its in except:motorcar.
*/
boost::optional<InputRestrictionContainer>
RestrictionParser::TryParse(const osmium::Relation &relation) const
{
// return if turn restrictions should be ignored
if (!use_turn_restrictions)
{
return {};
}
osmium::tags::KeyFilter filter(false);
filter.add(true, "restriction");
// Not only use restriction= but also e.g. restriction:motorcar=
for (const auto &namespaced : restrictions)
filter.add(true, "restriction:" + namespaced);
const osmium::TagList &tag_list = relation.tags();
osmium::tags::KeyFilter::iterator fi_begin(filter, tag_list.begin(), tag_list.end());
osmium::tags::KeyFilter::iterator fi_end(filter, tag_list.end(), tag_list.end());
// if it's not a restriction, continue;
if (std::distance(fi_begin, fi_end) == 0)
{
return {};
}
// check if the restriction should be ignored
const char *except = relation.get_value_by_key("except");
if (except != nullptr && ShouldIgnoreRestriction(except))
{
return {};
}
bool is_only_restriction = false;
for (; fi_begin != fi_end; ++fi_begin)
{
const std::string key(fi_begin->key());
const std::string value(fi_begin->value());
// documented OSM restriction tags start either with only_* or no_*;
// check and return on these values, and ignore unrecognized values
if (value.find("only_") == 0)
{
is_only_restriction = true;
}
else if (value.find("no_") == 0)
{
is_only_restriction = false;
}
else // unrecognized value type
{
return {};
}
}
InputRestrictionContainer restriction_container(is_only_restriction);
for (const auto &member : relation.members())
{
const char *role = member.role();
if (strcmp("from", role) != 0 && strcmp("to", role) != 0 && strcmp("via", role) != 0)
{
continue;
}
switch (member.type())
{
case osmium::item_type::node:
// Make sure nodes appear only in the role if a via node
if (0 == strcmp("from", role) || 0 == strcmp("to", role))
{
continue;
}
BOOST_ASSERT(0 == strcmp("via", role));
// set via node id
restriction_container.restriction.via.node = member.ref();
break;
case osmium::item_type::way:
BOOST_ASSERT(0 == strcmp("from", role) || 0 == strcmp("to", role) ||
0 == strcmp("via", role));
if (0 == strcmp("from", role))
{
restriction_container.restriction.from.way = member.ref();
}
else if (0 == strcmp("to", role))
{
restriction_container.restriction.to.way = member.ref();
}
// else if (0 == strcmp("via", role))
// {
// not yet suppported
// restriction_container.restriction.via.way = member.ref();
// }
break;
case osmium::item_type::relation:
// not yet supported, but who knows what the future holds...
break;
default:
// shouldn't ever happen
break;
}
}
return boost::make_optional(std::move(restriction_container));
}
mapbox::util::optional<InputRestrictionContainer>
RestrictionParser::TryParse(const osmium::Relation &relation) const
{
// return if turn restrictions should be ignored
if (!use_turn_restrictions)
{
return mapbox::util::optional<InputRestrictionContainer>();
}
osmium::tags::KeyPrefixFilter filter(false);
filter.add(true, "restriction");
const osmium::TagList &tag_list = relation.tags();
osmium::tags::KeyPrefixFilter::iterator fi_begin(filter, tag_list.begin(), tag_list.end());
osmium::tags::KeyPrefixFilter::iterator fi_end(filter, tag_list.end(), tag_list.end());
// if it's a restriction, continue;
if (std::distance(fi_begin, fi_end) == 0)
{
return mapbox::util::optional<InputRestrictionContainer>();
}
// check if the restriction should be ignored
const char *except = relation.get_value_by_key("except");
if (except != nullptr && ShouldIgnoreRestriction(except))
{
return mapbox::util::optional<InputRestrictionContainer>();
}
bool is_only_restriction = false;
for (auto iter = fi_begin; iter != fi_end; ++iter)
{
if (std::string("restriction") == iter->key() ||
std::string("restriction::hgv") == iter->key())
{
const std::string restriction_value(iter->value());
if (restriction_value.find("only_") == 0)
{
is_only_restriction = true;
}
}
}
InputRestrictionContainer restriction_container(is_only_restriction);
for (const auto &member : relation.members())
{
const char *role = member.role();
if (strcmp("from", role) != 0 && strcmp("to", role) != 0 && strcmp("via", role) != 0)
{
continue;
}
switch (member.type())
{
case osmium::item_type::node:
// Make sure nodes appear only in the role if a via node
if (0 == strcmp("from", role) || 0 == strcmp("to", role))
{
continue;
}
BOOST_ASSERT(0 == strcmp("via", role));
// set via node id
restriction_container.restriction.via.node = member.ref();
break;
case osmium::item_type::way:
BOOST_ASSERT(0 == strcmp("from", role) || 0 == strcmp("to", role) ||
0 == strcmp("via", role));
if (0 == strcmp("from", role))
{
restriction_container.restriction.from.way = member.ref();
}
else if (0 == strcmp("to", role))
{
restriction_container.restriction.to.way = member.ref();
}
// else if (0 == strcmp("via", role))
// {
// not yet suppported
// restriction_container.restriction.via.way = member.ref();
// }
break;
case osmium::item_type::relation:
// not yet supported, but who knows what the future holds...
break;
default:
// shouldn't ever happen
break;
}
}
return mapbox::util::optional<InputRestrictionContainer>(restriction_container);
}
/**
* Tries to parse a relation as a turn restriction. This can fail for a number of
* reasons. The return type is a boost::optional<T>.
*
* Some restrictions can also be ignored: See the ```get_restrictions``` function
* in the corresponding profile. We use it for both namespacing restrictions, as in
* restriction:motorcar as well as whitelisting if its in except:motorcar.
*/
std::vector<InputRestrictionContainer>
RestrictionParser::TryParse(const osmium::Relation &relation) const
{
std::vector<InputRestrictionContainer> parsed_restrictions;
// return if turn restrictions should be ignored
if (!use_turn_restrictions)
{
return {};
}
osmium::tags::KeyFilter filter(false);
filter.add(true, "restriction");
if (parse_conditionals)
{
filter.add(true, "restriction:conditional");
for (const auto &namespaced : restrictions)
{
filter.add(true, "restriction:" + namespaced + ":conditional");
}
}
// Not only use restriction= but also e.g. restriction:motorcar=
// Include restriction:{mode}:conditional if flagged
for (const auto &namespaced : restrictions)
{
filter.add(true, "restriction:" + namespaced);
}
const osmium::TagList &tag_list = relation.tags();
osmium::tags::KeyFilter::iterator fi_begin(filter, tag_list.begin(), tag_list.end());
osmium::tags::KeyFilter::iterator fi_end(filter, tag_list.end(), tag_list.end());
// if it's not a restriction, continue;
if (std::distance(fi_begin, fi_end) == 0)
{
return {};
}
// check if the restriction should be ignored
const char *except = relation.get_value_by_key("except");
if (except != nullptr && ShouldIgnoreRestriction(except))
{
return {};
}
bool is_only_restriction = false;
for (; fi_begin != fi_end; ++fi_begin)
{
const std::string key(fi_begin->key());
const std::string value(fi_begin->value());
// documented OSM restriction tags start either with only_* or no_*;
// check and return on these values, and ignore unrecognized values
if (value.find("only_") == 0)
{
is_only_restriction = true;
}
else if (value.find("no_") == 0)
{
is_only_restriction = false;
}
else // unrecognized value type
{
return {};
}
}
InputRestrictionContainer restriction_container(is_only_restriction);
for (const auto &member : relation.members())
{
const char *role = member.role();
if (strcmp("from", role) != 0 && strcmp("to", role) != 0 && strcmp("via", role) != 0)
{
continue;
}
switch (member.type())
{
case osmium::item_type::node:
// Make sure nodes appear only in the role if a via node
if (0 == strcmp("from", role) || 0 == strcmp("to", role))
{
continue;
}
BOOST_ASSERT(0 == strcmp("via", role));
// set via node id
restriction_container.restriction.via.node = member.ref();
break;
case osmium::item_type::way:
BOOST_ASSERT(0 == strcmp("from", role) || 0 == strcmp("to", role) ||
0 == strcmp("via", role));
if (0 == strcmp("from", role))
{
restriction_container.restriction.from.way = member.ref();
}
else if (0 == strcmp("to", role))
{
restriction_container.restriction.to.way = member.ref();
}
// else if (0 == strcmp("via", role))
// {
// not yet suppported
// restriction_container.restriction.via.way = member.ref();
// }
break;
case osmium::item_type::relation:
// not yet supported, but who knows what the future holds...
break;
default:
// shouldn't ever happen
break;
}
}
// parse conditional tags
if (parse_conditionals)
{
osmium::tags::KeyFilter::iterator fi_begin(filter, tag_list.begin(), tag_list.end());
osmium::tags::KeyFilter::iterator fi_end(filter, tag_list.end(), tag_list.end());
for (; fi_begin != fi_end; ++fi_begin)
{
const std::string key(fi_begin->key());
const std::string value(fi_begin->value());
// Parse condition and add independent value/condition pairs
const auto &parsed = osrm::util::ParseConditionalRestrictions(value);
if (parsed.empty())
continue;
for (const auto &p : parsed)
{
std::vector<util::OpeningHours> hours = util::ParseOpeningHours(p.condition);
// found unrecognized condition, continue
if (hours.empty())
return {};
restriction_container.restriction.condition = std::move(hours);
}
}
}
// push back a copy of turn restriction
if (restriction_container.restriction.via.node != SPECIAL_NODEID &&
restriction_container.restriction.from.node != SPECIAL_NODEID &&
restriction_container.restriction.to.node != SPECIAL_NODEID)
parsed_restrictions.push_back(restriction_container);
return parsed_restrictions;
}