Libosmium
2.15.6
Fast and flexible C++ library for working with OpenStreetMap data
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Go to the documentation of this file. 1 #ifndef OSMIUM_IO_READER_HPP
2 #define OSMIUM_IO_READER_HPP
37 #include <osmium/io/detail/input_format.hpp>
38 #include <osmium/io/detail/queue_util.hpp>
39 #include <osmium/io/detail/read_thread.hpp>
40 #include <osmium/io/detail/read_write.hpp>
56 #include <system_error>
61 # include <sys/wait.h>
74 inline std::size_t get_input_queue_size() noexcept {
78 inline std::size_t get_osmdata_queue_size() noexcept {
145 const detail::ParserFactory::create_parser_type& creator,
146 detail::future_string_queue_type& input_queue,
147 detail::future_buffer_queue_type& osmdata_queue,
148 std::promise<osmium::io::Header>&& header_promise,
151 std::promise<osmium::io::Header> promise{std::move(header_promise)};
152 osmium::io::detail::parser_arguments args = {
160 creator(args)->parse();
175 static int execute(
const std::string& command,
const std::string& filename,
int* childpid) {
177 if (pipe(pipefd) < 0) {
178 throw std::system_error{errno, std::system_category(),
"opening pipe failed"};
180 const pid_t pid = fork();
182 throw std::system_error{errno, std::system_category(),
"fork failed"};
186 for (
int i = 0; i < 32; ++i) {
187 if (i != pipefd[1]) {
191 if (dup2(pipefd[1], 1) < 0) {
195 ::open(
"/dev/null", O_RDONLY);
196 ::open(
"/dev/null", O_WRONLY);
201 if (::execlp(command.c_str(), command.c_str(),
"-g", filename.c_str(),
nullptr) < 0) {
221 const std::string protocol{filename.substr(0, filename.find_first_of(
':'))};
222 if (protocol ==
"http" || protocol ==
"https" || protocol ==
"ftp" || protocol ==
"file") {
224 return execute(
"curl", filename, childpid);
226 throw io_error{
"Reading OSM files from the network currently not supported on Windows."};
229 return osmium::io::detail::open_for_reading(filename);
256 template <
typename... TArgs>
269 (void)std::initializer_list<int>{
277 std::promise<osmium::io::Header> header_promise;
282 template <
typename... TArgs>
283 explicit Reader(
const std::string& filename, TArgs&&... args) :
287 template <
typename... TArgs>
288 explicit Reader(
const char* filename, TArgs&&... args) :
331 #pragma GCC diagnostic push
332 #pragma GCC diagnostic ignored "-Wold-style-cast"
333 if (pid < 0 || !WIFEXITED(
status) || WEXITSTATUS(
status) != 0) {
334 throw std::system_error{errno, std::system_category(),
"subprocess returned error"};
336 #pragma GCC diagnostic pop
350 throw io_error{
"Can not get header from reader when in status 'error'"};
389 throw io_error{
"Can not read from reader when in status 'closed', 'eof', or 'error'"};
404 if (detail::at_end_of_data(buffer)) {
468 template <
typename... TArgs>
472 Reader reader{std::forward<TArgs>(args)...};
473 while (
auto read_buffer = reader.read()) {
474 buffer.add_buffer(read_buffer);
485 #endif // OSMIUM_IO_READER_HPP
std::size_t offset() const noexcept
Definition: reader.hpp:454
osmium::io::Header header()
Definition: reader.hpp:348
static int execute(const std::string &command, const std::string &filename, int *childpid)
Definition: reader.hpp:175
@ nothing
Definition: entity_bits.hpp:67
osmium::memory::Buffer m_back_buffers
Definition: reader.hpp:95
static void parser_thread(osmium::thread::Pool &pool, const detail::ParserFactory::create_parser_type &creator, detail::future_string_queue_type &input_queue, detail::future_buffer_queue_type &osmdata_queue, std::promise< osmium::io::Header > &&header_promise, osmium::osm_entity_bits::type read_which_entities, osmium::io::read_meta read_metadata)
Definition: reader.hpp:144
void set_option(osmium::io::read_meta value) noexcept
Definition: reader.hpp:139
Reader(const std::string &filename, TArgs &&... args)
Definition: reader.hpp:283
~Reader() noexcept
Definition: reader.hpp:298
static int open_input_file_or_url(const std::string &filename, int *childpid)
Definition: reader.hpp:220
detail::future_buffer_queue_type m_osmdata_queue
Definition: reader.hpp:118
osmium::thread::thread_handler m_thread
Definition: reader.hpp:124
std::unique_ptr< Buffer > get_last_nested()
Definition: buffer.hpp:447
std::size_t committed() const noexcept
Definition: buffer.hpp:356
void set_option(osmium::thread::Pool &pool) noexcept
Definition: reader.hpp:131
Reader(const Reader &)=delete
osmium::io::Header m_header
Definition: reader.hpp:122
detail::ParserFactory::create_parser_type m_creator
Definition: reader.hpp:101
Definition: buffer.hpp:97
std::size_t get_max_queue_size(const char *queue_name, const std::size_t default_value) noexcept
Definition: config.hpp:83
bool has_nested_buffers() const noexcept
Definition: buffer.hpp:437
status
Definition: reader.hpp:103
void close()
Definition: reader.hpp:314
static Pool & default_instance()
Definition: pool.hpp:180
Namespace for everything in the Osmium library.
Definition: assembler.hpp:53
osmium::memory::Buffer read()
Definition: reader.hpp:374
detail::queue_wrapper< osmium::memory::Buffer > m_osmdata_queue_wrapper
Definition: reader.hpp:119
osmium::osm_entity_bits::type m_read_which_entities
Definition: reader.hpp:128
osmium::memory::Buffer read_file(TArgs &&... args)
Definition: reader.hpp:469
Reader(const osmium::io::File &file, TArgs &&... args)
Definition: reader.hpp:257
bool eof() const
Definition: reader.hpp:428
std::size_t file_size() const noexcept
Definition: reader.hpp:436
int m_childpid
Definition: reader.hpp:110
enum osmium::io::Reader::status m_status
@ all
object or changeset
Definition: entity_bits.hpp:76
read_meta
Definition: file_format.hpp:54
osmium::io::read_meta m_read_metadata
Definition: reader.hpp:129
Reader(const char *filename, TArgs &&... args)
Definition: reader.hpp:288
Reader & operator=(const Reader &)=delete
Reader & operator=(Reader &&)=delete
Definition: location.hpp:551
Definition: compression.hpp:137
std::future< osmium::io::Header > m_header_future
Definition: reader.hpp:121
Definition: reader.hpp:90
detail::future_string_queue_type m_input_queue
Definition: reader.hpp:112
std::unique_ptr< osmium::io::Decompressor > m_decompressor
Definition: reader.hpp:114
osmium::io::File m_file
Definition: reader.hpp:97
osmium::thread::Pool * m_pool
Definition: reader.hpp:99
void set_option(osmium::osm_entity_bits::type value) noexcept
Definition: reader.hpp:135
osmium::io::detail::ReadThreadManager m_read_thread_manager
Definition: reader.hpp:116
type
Definition: entity_bits.hpp:63
std::size_t m_file_size
Definition: reader.hpp:126