/usr/include/osmium/input/xml.hpp is in libosmium-dev 0.0~20111213-g7f3500a-3build5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 | #ifndef OSMIUM_INPUT_XML_HPP
#define OSMIUM_INPUT_XML_HPP
/*
Copyright 2011 Jochen Topf <jochen@topf.org> and others (see README).
This file is part of Osmium (https://github.com/joto/osmium).
Osmium is free software: you can redistribute it and/or modify it under the
terms of the GNU Lesser General Public License or (at your option) the GNU
General Public License as published by the Free Software Foundation, either
version 3 of the Licenses, or (at your option) any later version.
Osmium is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE. See the GNU Lesser General Public License and the GNU
General Public License for more details.
You should have received a copy of the Licenses along with Osmium. If not, see
<http://www.gnu.org/licenses/>.
*/
#include <cstdio>
#include <cstdlib>
#include <iostream>
#include <string>
#include <unistd.h>
#include <cstring>
#include <sstream>
#include <expat.h>
namespace Osmium {
namespace Input {
/**
* Class for parsing OSM XML files.
*
* Generally you are not supposed to instantiate this class yourself.
* Instead create an OSMFile object and call its read() method.
*
* @tparam THandler A handler class (subclass of Osmium::Handler::Base).
*/
template <class THandler>
class XML : public Base<THandler> {
public:
/**
* Instantiate XML Parser.
*
* @param file OSMFile instance.
* @param handler Instance of THandler.
*/
XML(Osmium::OSMFile& file, THandler& handler) : Base<THandler>(file, handler), m_current_object(NULL), m_in_delete_section(false) {
}
void parse() {
int done;
XML_Parser parser = XML_ParserCreate(0);
if (!parser) {
throw std::runtime_error("Error creating parser");
}
XML_SetUserData(parser, this);
XML_SetElementHandler(parser, Osmium::Input::XML<THandler>::start_element_wrapper, Osmium::Input::XML<THandler>::end_element_wrapper);
try {
do {
void* buffer = XML_GetBuffer(parser, c_buffer_size);
if (buffer == 0) {
throw std::runtime_error("out of memory");
}
int result = read(this->get_fd(), buffer, c_buffer_size);
if (result < 0) {
exit(1);
}
done = (result == 0);
if (XML_ParseBuffer(parser, result, done) == XML_STATUS_ERROR) {
XML_Error errorCode = XML_GetErrorCode(parser);
long errorLine = XML_GetCurrentLineNumber(parser);
long errorCol = XML_GetCurrentColumnNumber(parser);
const XML_LChar *errorString = XML_ErrorString(errorCode);
std::stringstream errorDesc;
errorDesc << "XML parsing error at line " << errorLine << ":" << errorCol;
errorDesc << ": " << errorString;
throw std::runtime_error(errorDesc.str());
}
} while (!done);
XML_ParserFree(parser);
this->call_after_and_before_on_handler(UNKNOWN);
} catch (Osmium::Input::StopReading) {
// if a handler says to stop reading, we do
}
this->call_final_on_handler();
}
private:
static const int c_buffer_size = 10240;
Osmium::OSM::Object* m_current_object;
/**
* This is used only for change files which contain create, modify,
* and delete sections.
*/
bool m_in_delete_section;
static void XMLCALL start_element_wrapper(void* data, const XML_Char* element, const XML_Char** attrs) {
((Osmium::Input::XML<THandler> *)data)->start_element(element, attrs);
}
static void XMLCALL end_element_wrapper(void* data, const XML_Char* element) {
((Osmium::Input::XML<THandler> *)data)->end_element(element);
}
void init_object(Osmium::OSM::Object& obj, const XML_Char** attrs) {
if (m_in_delete_section) {
obj.visible(false);
}
m_current_object = &obj;
for (int count = 0; attrs[count]; count += 2) {
if (!strcmp(attrs[count], "lon")) {
if (this->m_node) {
this->m_node->set_x(atof(attrs[count+1]));
}
} else if (!strcmp(attrs[count], "lat")) {
if (this->m_node) {
this->m_node->set_y(atof(attrs[count+1]));
}
} else {
m_current_object->set_attribute(attrs[count], attrs[count+1]);
}
}
}
void start_element(const XML_Char* element, const XML_Char** attrs) {
// order in the following "if" statements is based on frequency of tags in planet file
if (!strcmp(element, "nd")) {
for (int count = 0; attrs[count]; count += 2) {
if (!strcmp(attrs[count], "ref")) {
this->m_way->add_node(atoll(attrs[count+1]));
}
}
} else if (!strcmp(element, "node")) {
this->call_after_and_before_on_handler(NODE);
init_object(this->prepare_node(), attrs);
} else if (!strcmp(element, "tag")) {
const char *key = "", *value = "";
for (int count = 0; attrs[count]; count += 2) {
if (attrs[count][0] == 'k' && attrs[count][1] == 0) {
key = attrs[count+1];
}
if (attrs[count][0] == 'v' && attrs[count][1] == 0) {
value = attrs[count+1];
}
}
// XXX assert key, value exist
if (m_current_object) {
m_current_object->tags().add(key, value);
}
} else if (!strcmp(element, "way")) {
this->call_after_and_before_on_handler(WAY);
init_object(this->prepare_way(), attrs);
} else if (!strcmp(element, "member")) {
char type = 'x';
uint64_t ref = 0;
const char *role = "";
for (int count = 0; attrs[count]; count += 2) {
if (!strcmp(attrs[count], "type")) {
type = (char)attrs[count+1][0];
} else if (!strcmp(attrs[count], "ref")) {
ref = atoll(attrs[count+1]);
} else if (!strcmp(attrs[count], "role")) {
role = (char *)attrs[count+1];
}
}
// XXX assert type, ref, role are set
if (m_current_object && this->m_relation) {
this->m_relation->add_member(type, ref, role);
}
} else if (!strcmp(element, "relation")) {
this->call_after_and_before_on_handler(RELATION);
init_object(this->prepare_relation(), attrs);
} else if (!strcmp(element, "bounds")) {
Osmium::OSM::Position min;
Osmium::OSM::Position max;
for (int count = 0; attrs[count]; count += 2) {
if (!strcmp(attrs[count], "minlon")) {
min.lon(atof(attrs[count+1]));
} else if (!strcmp(attrs[count], "minlat")) {
min.lat(atof(attrs[count+1]));
} else if (!strcmp(attrs[count], "maxlon")) {
max.lon(atof(attrs[count+1]));
} else if (!strcmp(attrs[count], "maxlat")) {
max.lat(atof(attrs[count+1]));
}
}
this->meta().bounds().extend(min).extend(max);
} else if (!strcmp(element, "delete")) {
m_in_delete_section = true;
}
}
void end_element(const XML_Char* element) {
if (!strcmp(element, "node")) {
this->call_node_on_handler();
m_current_object = NULL;
} else if (!strcmp(element, "way")) {
this->call_way_on_handler();
m_current_object = NULL;
} else if (!strcmp(element, "relation")) {
this->call_relation_on_handler();
m_current_object = NULL;
} else if (!strcmp(element, "delete")) {
m_in_delete_section = false;
}
}
}; // class XML
} // namespace Input
} // namespace Osmium
#endif // OSMIUM_INPUT_XML_HPP
|