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#include "osm_xml_parser.hpp"
#include "../base/assert.hpp"
#include "../base/string_utils.hpp"
namespace osm
{
OsmIdAndTagHolder::OsmIdAndTagHolder(OsmId id, OsmTags const & tags)
: m_id(id), m_tags(tags)
{
}
bool OsmIdAndTagHolder::TagValueByKey(string const & key, string & outValue) const
{
for (OsmTags::const_iterator it = m_tags.begin(); it != m_tags.end(); ++it)
{
if (it->first == key)
{
outValue = it->second;
return true;
}
}
return false;
}
/////////////////////////////////////////////////////////
OsmNode::OsmNode(OsmId id, OsmTags const & tags, double lat, double lon)
: OsmIdAndTagHolder(id, tags), m_lat(lat), m_lon(lon)
{
}
/////////////////////////////////////////////////////////
OsmWay::OsmWay(OsmId id, OsmTags const & tags, OsmIds const & pointIds)
: OsmIdAndTagHolder(id, tags), m_points(pointIds)
{
CHECK_GREATER_OR_EQUAL(m_points.size(), 2, ("Can't construct a way with less than 2 points", id));
}
size_t OsmWay::PointsCount() const
{
return m_points.size();
}
bool OsmWay::IsClosed() const
{
return m_points.front() == m_points.back();
}
bool OsmWay::MergeWith(OsmWay const & way)
{
size_t const oldSize = m_points.size();
// first, try to connect our end with their start
if (m_points.back() == way.m_points.front())
m_points.insert(m_points.end(), ++way.m_points.begin(), way.m_points.end());
// our end and their end
else if (m_points.back() == way.m_points.back())
m_points.insert(m_points.end(), ++way.m_points.rbegin(), way.m_points.rend());
// our start and their end
else if (m_points.front() == way.m_points.back())
m_points.insert(m_points.begin(), way.m_points.begin(), --way.m_points.end());
// our start and their start
else if (m_points.front() == way.m_points.front())
m_points.insert(m_points.begin(), way.m_points.rbegin(), --way.m_points.rend());
return m_points.size() > oldSize;
}
///////////////////////////////////////////////////////////////
OsmRelation::OsmRelation(OsmId id, OsmTags const & tags, RelationMembers const & members)
: OsmIdAndTagHolder(id, tags), m_members(members)
{
CHECK(!m_members.empty(), ("Can't construct a relation without members", id));
}
OsmIds OsmRelation::MembersByTypeAndRole(string const & type, string const & role) const
{
OsmIds result;
for (RelationMembers::const_iterator it = m_members.begin(); it != m_members.end(); ++it)
if (it->m_type == type && it->m_role == role)
result.push_back(it->m_ref);
return result;
}
///////////////////////////////////////////////////////////////
void OsmRawData::AddNode(OsmId id, OsmTags const & tags, double lat, double lon)
{
m_nodes.insert(nodes_type::value_type(id, OsmNode(id, tags, lat, lon)));
}
void OsmRawData::AddWay(OsmId id, OsmTags const & tags, OsmIds const & nodeIds)
{
m_ways.insert(ways_type::value_type(id, OsmWay(id, tags, nodeIds)));
}
void OsmRawData::AddRelation(OsmId id, OsmTags const & tags, RelationMembers const & members)
{
m_relations.insert(relations_type::value_type(id, OsmRelation(id, tags, members)));
}
OsmNode OsmRawData::NodeById(OsmId id) const
{
nodes_type::const_iterator found = m_nodes.find(id);
if (found == m_nodes.end())
MYTHROW( OsmInvalidIdException, (id, "node not found") );
return found->second;
}
OsmWay OsmRawData::WayById(OsmId id) const
{
ways_type::const_iterator found = m_ways.find(id);
if (found == m_ways.end())
MYTHROW( OsmInvalidIdException, (id, "way not found") );
return found->second;
}
OsmRelation OsmRawData::RelationById(OsmId id) const
{
relations_type::const_iterator found = m_relations.find(id);
if (found == m_relations.end())
MYTHROW( OsmInvalidIdException, (id, "relation not found") );
return found->second;
}
OsmIds OsmRawData::RelationsByKey(string const & key) const
{
OsmIds result;
string value;
for (relations_type::const_iterator it = m_relations.begin(); it != m_relations.end(); ++it)
{
if (it->second.TagValueByKey(key, value))
result.push_back(it->first);
}
return result;
}
OsmIds OsmRawData::RelationsByTag(OsmTag const & tag) const
{
OsmIds result;
string value;
for (relations_type::const_iterator it = m_relations.begin(); it != m_relations.end(); ++it)
{
if (it->second.TagValueByKey(tag.first, value) && value == tag.second)
result.push_back(it->first);
}
return result;
}
/////////////////////////////////////////////////////////
OsmXmlParser::OsmXmlParser(OsmRawData & outData)
: m_osmRawData(outData)
{
}
bool OsmXmlParser::Push(string const & element)
{
m_xmlTags.push_back(element);
m_invalidTags.push_back(false);
return true;
}
void OsmXmlParser::Pop(string const & element)
{
bool invalid = m_invalidTags.back();
if (element == "node")
{
if (!invalid)
m_osmRawData.AddNode(m_id, m_tags, m_lat, m_lon);
m_tags.clear();
}
else if (element == "nd")
{
if (!invalid)
m_nds.push_back(m_ref);
}
else if (element == "way")
{
if (!invalid)
m_osmRawData.AddWay(m_id, m_tags, m_nds);
m_nds.clear();
m_tags.clear();
}
else if (element == "tag")
{
if (!invalid)
m_tags.push_back(OsmTag(m_k, m_v));
}
else if (element == "member")
{
if (!invalid)
m_members.push_back(m_member);
}
else if (element == "relation")
{
if (!invalid)
m_osmRawData.AddRelation(m_id, m_tags, m_members);
m_members.clear();
m_tags.clear();
}
m_invalidTags.pop_back();
m_xmlTags.pop_back();
}
void OsmXmlParser::AddAttr(string const & attr, string const & value)
{
string const & elem = m_xmlTags.back();
if (attr == "id" && (elem == "node" || elem == "way" || elem == "relation"))
{
CHECK(strings::to_int64(value, m_id), ());
CHECK_NOT_EQUAL(m_id, 0, ("id == 0 is invalid"));
}
else if (attr == "lat" && elem == "node")
{
CHECK(strings::to_double(value, m_lat), ());
}
else if (attr == "lon" && elem == "node")
{
CHECK(strings::to_double(value, m_lon), ());
}
else if (attr == "ref")
{
int64_t numVal;
CHECK(strings::to_int64(value, numVal), ());
if (elem == "nd")
m_ref = numVal;
else if (elem == "member")
m_member.m_ref = numVal;
}
else if (attr == "k" && elem == "tag")
{
m_k = value;
}
else if (attr == "v" && elem == "tag")
{
m_v = value;
}
else if (attr == "type" && elem == "member")
{
m_member.m_type = value;
}
else if (attr == "role" && elem == "member")
{
m_member.m_role = value;
}
else if ((attr == "action" && value == "delete")
|| (attr == "visible" && value == "false"))
{
m_invalidTags.back() = true;
}
}
}
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