598 lines
16 KiB
C++
598 lines
16 KiB
C++
// metar interface class demo
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//
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// Written by Melchior FRANZ, started December 2003.
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//
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// Copyright (C) 2003 Melchior FRANZ - mfranz@aon.at
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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//
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// $Id$
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#include <iomanip>
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#include <sstream>
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#include <iostream>
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#include <string.h>
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#include <time.h>
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#include <cstdlib>
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#include <cstdio>
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#include <boost/algorithm/string.hpp>
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#include <simgear/environment/metar.hxx>
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#include <simgear/structure/exception.hxx>
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#include <simgear/io/HTTPClient.hxx>
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#include <simgear/io/HTTPMemoryRequest.hxx>
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#include <simgear/io/raw_socket.hxx>
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#include <simgear/timing/timestamp.hxx>
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using namespace std;
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using namespace simgear;
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// text color
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#if defined(__linux__) || defined(__sun) || defined(__CYGWIN__) || defined( __FreeBSD__ ) || defined ( sgi )
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# define R "\033[31;1m" // red
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# define G "\033[32;1m" // green
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# define Y "\033[33;1m" // yellow
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# define B "\033[34;1m" // blue
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# define M "\033[35;1m" // magenta
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# define C "\033[36;1m" // cyan
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# define W "\033[37;1m" // white
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# define N "\033[m" // normal
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#else
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# define R ""
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# define G ""
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# define Y ""
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# define B ""
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# define M ""
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# define C ""
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# define W ""
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# define N ""
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#endif
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const char *azimuthName(double d)
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{
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const char *dir[] = {
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"N", "NNE", "NE", "ENE",
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"E", "ESE", "SE", "SSE",
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"S", "SSW", "SW", "WSW",
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"W", "WNW", "NW", "NNW"
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};
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d += 11.25;
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while (d < 0)
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d += 360;
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while (d >= 360)
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d -= 360;
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return dir[int(d / 22.5)];
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}
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// round double to 10^g
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double rnd(double r, int g = 0)
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{
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double f = pow(10.0, g);
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return f * floor(r / f + 0.5);
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}
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ostream& operator<<(ostream& s, const SGMetarVisibility& v)
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{
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ostringstream buf;
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int m = v.getModifier();
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const char *mod;
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if (m == SGMetarVisibility::GREATER_THAN)
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mod = ">=";
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else if (m == SGMetarVisibility::LESS_THAN)
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mod = "<";
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else
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mod = "";
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buf << mod;
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double dist = rnd(v.getVisibility_m(), 1);
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if (dist < 1000.0)
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buf << rnd(dist, 1) << " m";
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else
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buf << rnd(dist / 1000.0, -1) << " km";
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const char *dir = "";
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int i;
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if ((i = v.getDirection()) != -1) {
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dir = azimuthName(i);
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buf << " " << dir;
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}
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buf << "\t\t\t\t\t" << mod << rnd(v.getVisibility_sm(), -1) << " US-miles " << dir;
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return s << buf.str();
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}
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void printReport(SGMetar *m)
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{
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#define NaN SGMetarNaN
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const char *s;
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char buf[256];
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double d;
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int i, lineno;
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if ((i = m->getReportType()) == SGMetar::AUTO)
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s = "\t\t(automatically generated)";
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else if (i == SGMetar::COR)
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s = "\t\t(manually corrected)";
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else if (i == SGMetar::RTD)
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s = "\t\t(routine delayed)";
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else
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s = "";
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cout << "METAR Report" << s << endl;
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cout << "============" << endl;
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cout << "Airport-Id:\t\t" << m->getId() << endl;
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// date/time
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int year = m->getYear();
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int month = m->getMonth();
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cout << "Report time:\t\t" << year << '/' << month << '/' << m->getDay();
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cout << ' ' << m->getHour() << ':';
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cout << setw(2) << setfill('0') << m->getMinute() << " UTC" << endl;
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// visibility
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SGMetarVisibility minvis = m->getMinVisibility();
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SGMetarVisibility maxvis = m->getMaxVisibility();
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double min = minvis.getVisibility_m();
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double max = maxvis.getVisibility_m();
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if (min != NaN) {
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if (max != NaN) {
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cout << "min. Visibility:\t" << minvis << endl;
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cout << "max. Visibility:\t" << maxvis << endl;
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} else
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cout << "Visibility:\t\t" << minvis << endl;
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}
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// directed visibility
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const SGMetarVisibility *dirvis = m->getDirVisibility();
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for (i = 0; i < 8; i++, dirvis++)
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if (dirvis->getVisibility_m() != NaN)
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cout << "\t\t\t" << *dirvis << endl;
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// vertical visibility
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SGMetarVisibility vertvis = m->getVertVisibility();
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if ((d = vertvis.getVisibility_ft()) != NaN)
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cout << "Vert. visibility:\t" << vertvis << endl;
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else if (vertvis.getModifier() == SGMetarVisibility::NOGO)
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cout << "Vert. visibility:\timpossible to determine" << endl;
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// wind
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d = m->getWindSpeed_kmh();
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cout << "Wind:\t\t\t";
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if (d < .1)
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cout << "none" << endl;
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else {
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if ((i = m->getWindDir()) == -1)
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cout << "from variable directions";
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else
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cout << "from the " << azimuthName(i) << " (" << i << "°)";
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cout << " at " << rnd(d, -1) << " km/h";
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cout << "\t\t" << rnd(m->getWindSpeed_kt(), -1) << " kt";
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cout << " = " << rnd(m->getWindSpeed_mph(), -1) << " mph";
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cout << " = " << rnd(m->getWindSpeed_mps(), -1) << " m/s";
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cout << endl;
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if ((d = m->getGustSpeed_kmh()) != NaN) {
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cout << "\t\t\twith gusts at " << rnd(d, -1) << " km/h";
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cout << "\t\t\t" << rnd(m->getGustSpeed_kt(), -1) << " kt";
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cout << " = " << rnd(m->getGustSpeed_mph(), -1) << " mph";
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cout << " = " << rnd(m->getGustSpeed_mps(), -1) << " m/s";
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cout << endl;
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}
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int from = m->getWindRangeFrom();
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int to = m->getWindRangeTo();
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if (from != to) {
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cout << "\t\t\tvariable from " << azimuthName(from);
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cout << " to " << azimuthName(to);
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cout << " (" << from << "°--" << to << "°)" << endl;
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}
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}
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// temperature/humidity/air pressure
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if ((d = m->getTemperature_C()) != NaN) {
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cout << "Temperature:\t\t" << d << "°C\t\t\t\t\t";
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cout << rnd(m->getTemperature_F(), -1) << "°F" << endl;
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if ((d = m->getDewpoint_C()) != NaN) {
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cout << "Dewpoint:\t\t" << d << "°C\t\t\t\t\t";
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cout << rnd(m->getDewpoint_F(), -1) << "°F" << endl;
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cout << "Rel. Humidity:\t\t" << rnd(m->getRelHumidity()) << "%" << endl;
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}
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}
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if ((d = m->getPressure_hPa()) != NaN) {
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cout << "Pressure:\t\t" << rnd(d) << " hPa\t\t\t\t";
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cout << rnd(m->getPressure_inHg(), -2) << " in. Hg" << endl;
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}
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// weather phenomena
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vector<string> wv = m->getWeather();
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vector<string>::iterator weather;
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for (i = 0, weather = wv.begin(); weather != wv.end(); weather++, i++) {
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cout << (i ? ", " : "Weather:\t\t") << weather->c_str();
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}
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if (i)
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cout << endl;
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// cloud layers
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const char *coverage_string[5] = {
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"clear skies", "few clouds", "scattered clouds", "broken clouds", "sky overcast"
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};
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vector<SGMetarCloud> cv = m->getClouds();
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vector<SGMetarCloud>::iterator cloud;
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for (lineno = 0, cloud = cv.begin(); cloud != cv.end(); cloud++, lineno++) {
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cout << (lineno ? "\t\t\t" : "Sky condition:\t\t");
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if ((i = cloud->getCoverage()) != -1)
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cout << coverage_string[i];
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if ((d = cloud->getAltitude_ft()) != NaN)
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cout << " at " << rnd(d, 1) << " ft";
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if ((s = cloud->getTypeLongString()))
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cout << " (" << s << ')';
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if (d != NaN)
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cout << "\t\t\t" << rnd(cloud->getAltitude_m(), 1) << " m";
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cout << endl;
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}
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// runways
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map<string, SGMetarRunway> rm = m->getRunways();
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map<string, SGMetarRunway>::iterator runway;
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for (runway = rm.begin(); runway != rm.end(); runway++) {
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lineno = 0;
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if (!strcmp(runway->first.c_str(), "ALL"))
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cout << "All runways:\t\t";
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else
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cout << "Runway " << runway->first << ":\t\t";
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SGMetarRunway rwy = runway->second;
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// assemble surface string
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vector<string> surface;
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if ((s = rwy.getDepositString()) && strlen(s))
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surface.push_back(s);
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if ((s = rwy.getExtentString()) && strlen(s))
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surface.push_back(s);
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if ((d = rwy.getDepth()) != NaN) {
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sprintf(buf, "%.1lf mm", d * 1000.0);
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surface.push_back(buf);
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}
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if ((s = rwy.getFrictionString()) && strlen(s))
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surface.push_back(s);
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if ((d = rwy.getFriction()) != NaN) {
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sprintf(buf, "friction: %.2lf", d);
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surface.push_back(buf);
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}
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if (! surface.empty()) {
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vector<string>::iterator rwysurf = surface.begin();
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for (i = 0; rwysurf != surface.end(); rwysurf++, i++) {
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if (i)
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cout << ", ";
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cout << *rwysurf;
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}
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lineno++;
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}
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// assemble visibility string
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SGMetarVisibility minvis = rwy.getMinVisibility();
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SGMetarVisibility maxvis = rwy.getMaxVisibility();
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if ((d = minvis.getVisibility_m()) != NaN) {
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if (lineno++)
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cout << endl << "\t\t\t";
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cout << minvis;
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}
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if (maxvis.getVisibility_m() != d) {
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cout << endl << "\t\t\t" << maxvis << endl;
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lineno++;
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}
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if (rwy.getWindShear()) {
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if (lineno++)
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cout << endl << "\t\t\t";
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cout << "critical wind shear" << endl;
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}
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cout << endl;
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}
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cout << endl;
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#undef NaN
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}
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void printArgs(SGMetar *m, double airport_elevation)
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{
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#define NaN SGMetarNaN
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vector<string> args;
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char buf[256];
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int i;
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// ICAO id
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sprintf(buf, "--airport=%s ", m->getId());
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args.push_back(buf);
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// report time
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sprintf(buf, "--start-date-gmt=%4d:%02d:%02d:%02d:%02d:00 ",
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m->getYear(), m->getMonth(), m->getDay(),
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m->getHour(), m->getMinute());
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args.push_back(buf);
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// cloud layers
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const char *coverage_string[5] = {
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"clear", "few", "scattered", "broken", "overcast"
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};
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vector<SGMetarCloud> cv = m->getClouds();
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vector<SGMetarCloud>::iterator cloud;
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for (i = 0, cloud = cv.begin(); i < 5; i++) {
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int coverage = 0;
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double altitude = -99999;
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if (cloud != cv.end()) {
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coverage = cloud->getCoverage();
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altitude = coverage ? cloud->getAltitude_ft() + airport_elevation : -99999;
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cloud++;
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}
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sprintf(buf, "--prop:/environment/clouds/layer[%d]/coverage=%s ", i, coverage_string[coverage]);
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args.push_back(buf);
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sprintf(buf, "--prop:/environment/clouds/layer[%d]/elevation-ft=%.0lf ", i, altitude);
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args.push_back(buf);
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sprintf(buf, "--prop:/environment/clouds/layer[%d]/thickness-ft=500 ", i);
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args.push_back(buf);
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}
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// environment (temperature, dewpoint, visibility, pressure)
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// metar sets don't provide aloft information; we have to
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// set the same values for all boundary levels
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int wind_dir = m->getWindDir();
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double visibility = m->getMinVisibility().getVisibility_m();
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double dewpoint = m->getDewpoint_C();
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double temperature = m->getTemperature_C();
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double pressure = m->getPressure_inHg();
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double wind_speed = m->getWindSpeed_kt();
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double elevation = -100;
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for (i = 0; i < 3; i++, elevation += 2000.0) {
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sprintf(buf, "--prop:/environment/config/boundary/entry[%d]/", i);
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int pos = strlen(buf);
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sprintf(&buf[pos], "elevation-ft=%.0lf", elevation);
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args.push_back(buf);
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sprintf(&buf[pos], "turbulence-norm=%.0lf", 0.0);
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args.push_back(buf);
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if (visibility != NaN) {
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sprintf(&buf[pos], "visibility-m=%.0lf", visibility);
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args.push_back(buf);
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}
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if (temperature != NaN) {
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sprintf(&buf[pos], "temperature-degc=%.0lf", temperature);
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args.push_back(buf);
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}
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if (dewpoint != NaN) {
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sprintf(&buf[pos], "dewpoint-degc=%.0lf", dewpoint);
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args.push_back(buf);
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}
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if (pressure != NaN) {
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sprintf(&buf[pos], "pressure-sea-level-inhg=%.0lf", pressure);
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args.push_back(buf);
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}
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if (wind_dir != NaN) {
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sprintf(&buf[pos], "wind-from-heading-deg=%d", wind_dir);
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args.push_back(buf);
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}
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if (wind_speed != NaN) {
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sprintf(&buf[pos], "wind-speed-kt=%.0lf", wind_speed);
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args.push_back(buf);
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}
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}
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// wind dir@speed
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int range_from = m->getWindRangeFrom();
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int range_to = m->getWindRangeTo();
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double gust_speed = m->getGustSpeed_kt();
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if (wind_speed != NaN && wind_dir != -1) {
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strcpy(buf, "--wind=");
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if (range_from != -1 && range_to != -1)
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sprintf(&buf[strlen(buf)], "%d:%d", range_from, range_to);
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else
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sprintf(&buf[strlen(buf)], "%d", wind_dir);
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sprintf(&buf[strlen(buf)], "@%.0lf", wind_speed);
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if (gust_speed != NaN)
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sprintf(&buf[strlen(buf)], ":%.0lf", gust_speed);
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args.push_back(buf);
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}
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// output everything
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//cout << "fgfs" << endl;
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vector<string>::iterator arg;
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for (i = 0, arg = args.begin(); arg != args.end(); i++, arg++) {
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cout << "\t" << *arg << endl;
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}
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cout << endl;
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#undef NaN
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}
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void getproxy(string& host, string& port)
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{
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host = "";
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port = "80";
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const char *p = getenv("http_proxy");
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if (!p)
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return;
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while (isspace(*p))
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p++;
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if (!strncmp(p, "http://", 7))
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p += 7;
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if (!*p)
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return;
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char s[256], *t;
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strncpy(s, p, 255);
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s[255] = '\0';
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for (t = s + strlen(s); t > s; t--)
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if (!isspace(t[-1]) && t[-1] != '/')
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break;
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*t = '\0';
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t = strchr(s, ':');
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if (t) {
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*t++ = '\0';
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port = t;
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}
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host = s;
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}
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void usage()
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{
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printf(
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"Usage: metar [-v] [-e elevation] [-r|-c] <list of ICAO airport ids or METAR strings>\n"
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" metar -h\n"
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"\n"
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" -h|--help show this help\n"
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" -v|--verbose verbose output\n"
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" -r|--report print report (default)\n"
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" -c|--command-line print command line\n"
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" -e E|--elevation E set airport elevation to E meters\n"
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" (added to cloud bases in command line mode)\n"
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"Environment:\n"
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" http_proxy set proxy in the form \"http://host:port/\"\n"
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"\n"
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"Examples:\n"
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" $ metar ksfo koak\n"
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" $ metar -c ksfo -r ksfo\n"
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" $ metar \"LOWL 161500Z 19004KT 160V240 9999 FEW035 SCT300 29/23 Q1006 NOSIG\"\n"
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" $ fgfs `metar -e 183 -c loww`\n"
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" $ http_proxy=http://localhost:3128/ metar ksfo\n"
|
|
"\n"
|
|
);
|
|
}
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
bool report = true;
|
|
bool verbose = false;
|
|
double elevation = 0.0;
|
|
|
|
if (argc <= 1) {
|
|
usage();
|
|
return 0;
|
|
}
|
|
|
|
string proxy_host, proxy_port;
|
|
getproxy(proxy_host, proxy_port);
|
|
|
|
Socket::initSockets();
|
|
|
|
HTTP::Client http;
|
|
http.setProxy(proxy_host, atoi(proxy_port.c_str()));
|
|
|
|
for (int i = 1; i < argc; i++) {
|
|
if (!strcmp(argv[i], "-h") || !strcmp(argv[i], "--help"))
|
|
usage();
|
|
else if (!strcmp(argv[i], "-v") || !strcmp(argv[i], "--verbose"))
|
|
verbose = true;
|
|
else if (!strcmp(argv[i], "-r") || !strcmp(argv[i], "--report"))
|
|
report = true;
|
|
else if (!strcmp(argv[i], "-c") || !strcmp(argv[i], "--command-line"))
|
|
report = false;
|
|
else if (!strcmp(argv[i], "-e") || !strcmp(argv[i], "--elevation")) {
|
|
if (++i >= argc) {
|
|
cerr << "-e option used without elevation" << endl;
|
|
return 1;
|
|
}
|
|
elevation = strtod(argv[i], 0);
|
|
} else {
|
|
static bool shown = false;
|
|
if (verbose && !shown) {
|
|
cerr << "Proxy host: '" << proxy_host << "'" << endl;
|
|
cerr << "Proxy port: '" << proxy_port << "'" << endl << endl;
|
|
shown = true;
|
|
}
|
|
|
|
try
|
|
{
|
|
static const std::string NOAA_BASE_URL =
|
|
"http://weather.noaa.gov/pub/data/observations/metar/stations/";
|
|
HTTP::MemoryRequest* mr = new HTTP::MemoryRequest
|
|
(
|
|
NOAA_BASE_URL
|
|
+ boost::to_upper_copy<std::string>(argv[i]) + ".TXT"
|
|
);
|
|
HTTP::Request_ptr own(mr);
|
|
http.makeRequest(mr);
|
|
|
|
// spin until the request completes, fails or times out
|
|
SGTimeStamp start(SGTimeStamp::now());
|
|
while (start.elapsedMSec() < 8000) {
|
|
http.update();
|
|
if( mr->isComplete() )
|
|
break;
|
|
SGTimeStamp::sleepForMSec(1);
|
|
}
|
|
|
|
if( !mr->isComplete() )
|
|
throw sg_io_exception("metar download timed out");
|
|
if( mr->responseCode() != 200 )
|
|
{
|
|
std::cerr << "metar download failed: "
|
|
<< mr->url()
|
|
<< " (" << mr->responseCode()
|
|
<< " " << mr->responseReason() << ")"
|
|
<< std::endl;
|
|
throw sg_io_exception("metar download failed");
|
|
}
|
|
|
|
SGMetar *m = new SGMetar(mr->responseBody());
|
|
|
|
//SGMetar *m = new SGMetar("2004/01/11 01:20\nLOWG 110120Z AUTO VRB01KT 0050 1600N R35/0600 FG M06/M06 Q1019 88//////\n");
|
|
|
|
if (verbose) {
|
|
cerr << G "INPUT: " << m->getData() << "" N << endl;
|
|
|
|
const char *unused = m->getUnusedData();
|
|
if (*unused)
|
|
cerr << R "UNUSED: " << unused << "" N << endl;
|
|
}
|
|
|
|
if (report)
|
|
printReport(m);
|
|
else
|
|
printArgs(m, elevation);
|
|
|
|
delete m;
|
|
} catch (const sg_io_exception& e) {
|
|
cerr << R "ERROR: " << e.getFormattedMessage().c_str() << "" N << endl << endl;
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|