85 lines
2.6 KiB
C++
85 lines
2.6 KiB
C++
/*
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EXAMPLE osmium_debug
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Dump the contents of the input file in a debug format.
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DEMONSTRATES USE OF:
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* file input reading only some types
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* the dump handler
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SIMPLER EXAMPLES you might want to understand first:
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* osmium_read
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* osmium_count
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LICENSE
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The code in this example file is released into the Public Domain.
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*/
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#include <cstdlib> // for std::exit
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#include <iostream> // for std::cout, std::cerr
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#include <string> // for std::string
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// The Dump handler
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#include <osmium/handler/dump.hpp>
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// Allow any format of input files (XML, PBF, ...)
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#include <osmium/io/any_input.hpp>
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int main(int argc, char* argv[]) {
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// Speed up output (not Osmium-specific)
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std::ios_base::sync_with_stdio(false);
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if (argc < 2 || argc > 3) {
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std::cerr << "Usage: " << argv[0] << " OSMFILE [TYPES]\n";
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std::cerr << "TYPES can be any combination of 'n', 'w', 'r', and 'c' to indicate what types of OSM entities you want (default: all).\n";
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std::exit(1);
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}
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// Default is all entity types: nodes, ways, relations, and changesets
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osmium::osm_entity_bits::type read_types = osmium::osm_entity_bits::all;
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// Get entity types from command line if there is a 2nd argument.
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if (argc == 3) {
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read_types = osmium::osm_entity_bits::nothing;
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std::string types = argv[2];
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if (types.find('n') != std::string::npos) {
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read_types |= osmium::osm_entity_bits::node;
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}
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if (types.find('w') != std::string::npos) {
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read_types |= osmium::osm_entity_bits::way;
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}
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if (types.find('r') != std::string::npos) {
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read_types |= osmium::osm_entity_bits::relation;
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}
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if (types.find('c') != std::string::npos) {
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read_types |= osmium::osm_entity_bits::changeset;
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}
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}
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// Initialize Reader with file name and the types of entities we want to
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// read.
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osmium::io::Reader reader{argv[1], read_types};
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// The file header can contain metadata such as the program that generated
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// the file and the bounding box of the data.
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osmium::io::Header header = reader.header();
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std::cout << "HEADER:\n generator=" << header.get("generator") << "\n";
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for (const auto& bbox : header.boxes()) {
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std::cout << " bbox=" << bbox << "\n";
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}
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// Initialize Dump handler.
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osmium::handler::Dump dump{std::cout};
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// Read from input and send everything to Dump handler.
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osmium::apply(reader, dump);
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// You do not have to close the Reader explicitly, but because the
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// destructor can't throw, you will not see any errors otherwise.
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reader.close();
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}
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