88 lines
2.1 KiB
C++
88 lines
2.1 KiB
C++
#include <cstdio>
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#include <fstream>
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#include <sstream>
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#include <stdexcept>
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#include <dirent.h>
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#include <unistd.h> // for usleep
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#include <sqlite3.h>
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#include "config.h"
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#include "POIAttributes.h"
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#include "util.h"
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POIAttributes::POIAttributes(const std::string &worldDir)
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{
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std::ifstream ifs(worldDir + "world.mt");
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if (!ifs.good())
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throw std::runtime_error("Failed to read world.mt");
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std::string backend = read_setting_default("mod_storage_backend", ifs, "sqlite3");
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ifs.close();
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if (backend == "sqlite3")
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readSqlite(worldDir + "mod_storage.sqlite");
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else
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throw std::runtime_error(std::string("Unknown poi backend: ") + backend);
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}
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/**********/
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#define SQLRES(f, good) \
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result = (sqlite3_##f); \
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if (result != good) { \
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throw std::runtime_error(sqlite3_errmsg(db));\
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}
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#define SQLOK(f) SQLRES(f, SQLITE_OK)
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void POIAttributes::readSqlite(const std::string &db_name)
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{
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int result;
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sqlite3 *db;
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sqlite3_stmt *stmt_get_poi_pos;
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SQLOK(open_v2(db_name.c_str(), &db, SQLITE_OPEN_READONLY |
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SQLITE_OPEN_PRIVATECACHE, 0))
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SQLOK(prepare_v2(db,
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"SELECT key, value FROM entries WHERE modname = 'poi'",
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-1, &stmt_get_poi_pos, NULL))
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while ((result = sqlite3_step(stmt_get_poi_pos)) != SQLITE_DONE) {
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if (result == SQLITE_BUSY) { // Wait some time and try again
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usleep(10000);
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} else if (result != SQLITE_ROW) {
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throw std::runtime_error(sqlite3_errmsg(db));
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}
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POI poi;
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const unsigned char *name_ = sqlite3_column_text(stmt_get_poi_pos, 0);
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poi.name = reinterpret_cast<const char*>(name_);
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const char *pos_ = reinterpret_cast<const char*>(sqlite3_column_text(stmt_get_poi_pos, 1));
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float x, y, z;
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int items = sscanf(pos_, "(%f,%f,%f)", &x, &y, &z);
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if (items != 3) {
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std::cerr << "Failed to parse POI position '" << pos_ << "'" << std::endl;
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return;
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}
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poi.x = x;
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poi.y = y;
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poi.z = z;
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m_pois.push_back(poi);
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}
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sqlite3_finalize(stmt_get_poi_pos);
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sqlite3_close(db);
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}
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/**********/
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POIAttributes::POIs::const_iterator POIAttributes::begin() const
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{
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return m_pois.cbegin();
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}
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POIAttributes::POIs::const_iterator POIAttributes::end() const
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{
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return m_pois.cend();
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}
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