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flightgear/src/Airports/apt_loader.cxx

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Replace the data/Airports/basic.dat.gz and data/Airports/runways.dat.gz with a single apt.dat.gz file which is in the native X-Plane format. To do this I wrote a front end loader than builds the airport and runway list. Some of the changes I needed to make had a cascading effect, so there are minor naming changes scattered throughout the code.
2004-12-22 23:57:07 +00:00
// apt_loader.cxx -- a front end loader of the apt.dat file. This loader
// populates the runway and basic classes.
//
// Written by Curtis Olson, started August 2000.
//
// Copyright (C) 2000 Curtis L. Olson - http://www.flightgear.org/~curt
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
// published by the Free Software Foundation; either version 2 of the
// License, or (at your option) any later version.
//
// This program 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
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
new FSF address
2006-02-21 01:16:04 +00:00
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
Replace the data/Airports/basic.dat.gz and data/Airports/runways.dat.gz with a single apt.dat.gz file which is in the native X-Plane format. To do this I wrote a front end loader than builds the airport and runway list. Some of the changes I needed to make had a cascading effect, so there are minor naming changes scattered throughout the code.
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//
// $Id$
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <simgear/compiler.h>
#include <stdlib.h> // atof(), atoi()
Some small fixes and security updates.
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#include <string.h> // memchr()
Fix a number of build issues; Not all compilers support strnlen(), some platforms use more than one lend-ending character and capture lines starting with a whitespace also.
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#include <ctype.h> // isspace()
Replace the data/Airports/basic.dat.gz and data/Airports/runways.dat.gz with a single apt.dat.gz file which is in the native X-Plane format. To do this I wrote a front end loader than builds the airport and runway list. Some of the changes I needed to make had a cascading effect, so there are minor naming changes scattered throughout the code.
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#include <simgear/constants.h>
#include <simgear/debug/logstream.hxx>
#include <simgear/misc/sgstream.hxx>
#include <simgear/misc/strutils.hxx>
#include STL_STRING
#include "simple.hxx"
#include "runways.hxx"
#include "apt_loader.hxx"
// Load the airport data base from the specified aptdb file. The
// metar file is used to mark the airports as having metar available
// or not.
bool fgAirportDBLoad( FGAirportList *airports, FGRunwayList *runways,
const string &aptdb_file, const string &metar_file )
{
//
// Load the apt.dat file
//
sg_gzifstream in( aptdb_file );
if ( !in.is_open() ) {
SG_LOG( SG_GENERAL, SG_ALERT, "Cannot open file: " << aptdb_file );
exit(-1);
}
vector<string> token;
string last_apt_id = "";
double last_apt_elev = 0.0;
string last_apt_name = "";
string last_apt_info = "";
string last_apt_type = "";
string line;
Some small fixes and security updates.
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char tmp[2049];
tmp[2048] = 0;
Be a tad more clever on readin the apt database; optimize the if statements a bit and dont tokenize strings we don't want to see anyhow.
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Some small fixes and security updates.
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unsigned int line_id = 0;
unsigned int line_num = 0;
Replace the data/Airports/basic.dat.gz and data/Airports/runways.dat.gz with a single apt.dat.gz file which is in the native X-Plane format. To do this I wrote a front end loader than builds the airport and runway list. Some of the changes I needed to make had a cascading effect, so there are minor naming changes scattered throughout the code.
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double rwy_lon_accum = 0.0;
double rwy_lat_accum = 0.0;
int rwy_count = 0;
while ( ! in.eof() ) {
in.getline(tmp, 2048);
line = tmp;
Some small fixes and security updates.
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line_num++;
Be a tad more clever on readin the apt database; optimize the if statements a bit and dont tokenize strings we don't want to see anyhow.
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Some small fixes and security updates.
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SG_LOG( SG_GENERAL, SG_BULK, "#" << line_num << " '" << line << "'" );
Fix a number of build issues; Not all compilers support strnlen(), some platforms use more than one lend-ending character and capture lines starting with a whitespace also.
2005-05-27 18:49:45 +00:00
if ( !line.size() || isspace(tmp[0]))
Be a tad more clever on readin the apt database; optimize the if statements a bit and dont tokenize strings we don't want to see anyhow.
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continue;
Some small fixes and security updates.
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if (line.size() >= 3) {
Be a tad more clever on readin the apt database; optimize the if statements a bit and dont tokenize strings we don't want to see anyhow.
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char *p = (char *)memchr(tmp, ' ', 3);
if ( p )
*p = 0;
Replace the data/Airports/basic.dat.gz and data/Airports/runways.dat.gz with a single apt.dat.gz file which is in the native X-Plane format. To do this I wrote a front end loader than builds the airport and runway list. Some of the changes I needed to make had a cascading effect, so there are minor naming changes scattered throughout the code.
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}
Some small fixes and security updates.
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line_id = atoi(tmp);
if ( tmp[0] == 'I' ) {
Replace the data/Airports/basic.dat.gz and data/Airports/runways.dat.gz with a single apt.dat.gz file which is in the native X-Plane format. To do this I wrote a front end loader than builds the airport and runway list. Some of the changes I needed to make had a cascading effect, so there are minor naming changes scattered throughout the code.
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// First line, indicates IBM (i.e. DOS line endings I
// believe.)
// move past this line and read and discard the next line
// which is the version and copyright information
in.getline(tmp, 2048);
Be a tad more clever on readin the apt database; optimize the if statements a bit and dont tokenize strings we don't want to see anyhow.
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// vector<string> vers_token = simgear::strutils::split( tmp );
Fix a number of build issues; Not all compilers support strnlen(), some platforms use more than one lend-ending character and capture lines starting with a whitespace also.
2005-05-27 18:49:45 +00:00
if ( strlen(tmp) > 4 ) {
Be a tad more clever on readin the apt database; optimize the if statements a bit and dont tokenize strings we don't want to see anyhow.
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char *p = (char *)memchr(tmp, ' ', 4);
if ( p )
*p = 0;
}
Replace the data/Airports/basic.dat.gz and data/Airports/runways.dat.gz with a single apt.dat.gz file which is in the native X-Plane format. To do this I wrote a front end loader than builds the airport and runway list. Some of the changes I needed to make had a cascading effect, so there are minor naming changes scattered throughout the code.
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SG_LOG( SG_GENERAL, SG_INFO, "Data file version = "
Be a tad more clever on readin the apt database; optimize the if statements a bit and dont tokenize strings we don't want to see anyhow.
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<< tmp );
Some small fixes and security updates.
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} else if ( line_id == 1 /* Airport */ ||
line_id == 16 /* Seaplane base */ ||
line_id == 17 /* Heliport */ ) {
Replace the data/Airports/basic.dat.gz and data/Airports/runways.dat.gz with a single apt.dat.gz file which is in the native X-Plane format. To do this I wrote a front end loader than builds the airport and runway list. Some of the changes I needed to make had a cascading effect, so there are minor naming changes scattered throughout the code.
2004-12-22 23:57:07 +00:00
Be a tad more clever on readin the apt database; optimize the if statements a bit and dont tokenize strings we don't want to see anyhow.
2005-05-27 17:46:35 +00:00
token.clear();
token = simgear::strutils::split(line);
Replace the data/Airports/basic.dat.gz and data/Airports/runways.dat.gz with a single apt.dat.gz file which is in the native X-Plane format. To do this I wrote a front end loader than builds the airport and runway list. Some of the changes I needed to make had a cascading effect, so there are minor naming changes scattered throughout the code.
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string id = token[4];
double elev = atof( token[1].c_str() );
Change debug level: try --log-level=debug and you see why (takes very, very, *very* long to output all 21.000 airports that way).
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SG_LOG( SG_GENERAL, SG_BULK, "Next airport = " << id << " "
Replace the data/Airports/basic.dat.gz and data/Airports/runways.dat.gz with a single apt.dat.gz file which is in the native X-Plane format. To do this I wrote a front end loader than builds the airport and runway list. Some of the changes I needed to make had a cascading effect, so there are minor naming changes scattered throughout the code.
2004-12-22 23:57:07 +00:00
<< elev );
if ( !last_apt_id.empty()) {
if ( rwy_count > 0 ) {
double lat = rwy_lat_accum / (double)rwy_count;
double lon = rwy_lon_accum / (double)rwy_count;
airports->add( last_apt_id, lon, lat, last_apt_elev,
last_apt_name, false );
} else {
if ( !last_apt_id.length() ) {
SG_LOG(SG_GENERAL, SG_ALERT,
"ERROR: No runways for " << last_apt_id
<< " skipping." );
}
}
}
last_apt_id = id;
last_apt_elev = atof( token[1].c_str() );
last_apt_name = "";
// build the name
for ( unsigned int i = 5; i < token.size() - 1; ++i ) {
last_apt_name += token[i];
last_apt_name += " ";
}
last_apt_name += token[token.size() - 1];
last_apt_info = line;
last_apt_type = token[0];
// clear runway list for start of next airport
rwy_lon_accum = 0.0;
rwy_lat_accum = 0.0;
rwy_count = 0;
Some small fixes and security updates.
2005-05-30 08:47:00 +00:00
} else if ( line_id == 10 ) {
Be a tad more clever on readin the apt database; optimize the if statements a bit and dont tokenize strings we don't want to see anyhow.
2005-05-27 17:46:35 +00:00
token.clear();
token = simgear::strutils::split(line);
Replace the data/Airports/basic.dat.gz and data/Airports/runways.dat.gz with a single apt.dat.gz file which is in the native X-Plane format. To do this I wrote a front end loader than builds the airport and runway list. Some of the changes I needed to make had a cascading effect, so there are minor naming changes scattered throughout the code.
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// runway entry
double lat = atof( token[1].c_str() );
double lon = atof( token[2].c_str() );
rwy_lat_accum += lat;
rwy_lon_accum += lon;
rwy_count++;
string rwy_no = token[3];
double heading = atof( token[4].c_str() );
double length = atoi( token[5].c_str() );
double width = atoi( token[8].c_str() );
string rwy_displ_threshold = token[6];
vector<string> displ
= simgear::strutils::split( rwy_displ_threshold, "." );
double displ_thresh1 = atof( displ[0].c_str() );
double displ_thresh2 = atof( displ[1].c_str() );
string rwy_stopway = token[7];
vector<string> stop
= simgear::strutils::split( rwy_stopway, "." );
double stopway1 = atof( stop[0].c_str() );
double stopway2 = atof( stop[1].c_str() );
string lighting_flags = token[9];
int surface_code = atoi( token[10].c_str() );
string shoulder_code = token[11];
int marking_code = atoi( token[12].c_str() );
double smoothness = atof( token[13].c_str() );
bool dist_remaining = (atoi( token[14].c_str() ) == 1 );
runways->add( last_apt_id, rwy_no, lon, lat, heading, length,
width, displ_thresh1, displ_thresh2,
stopway1, stopway2, lighting_flags, surface_code,
shoulder_code, marking_code, smoothness,
dist_remaining );
Some small fixes and security updates.
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} else if ( line_id == 18 ) {
Replace the data/Airports/basic.dat.gz and data/Airports/runways.dat.gz with a single apt.dat.gz file which is in the native X-Plane format. To do this I wrote a front end loader than builds the airport and runway list. Some of the changes I needed to make had a cascading effect, so there are minor naming changes scattered throughout the code.
2004-12-22 23:57:07 +00:00
// beacon entry (ignore)
Some small fixes and security updates.
2005-05-30 08:47:00 +00:00
} else if ( line_id == 14 ) {
Replace the data/Airports/basic.dat.gz and data/Airports/runways.dat.gz with a single apt.dat.gz file which is in the native X-Plane format. To do this I wrote a front end loader than builds the airport and runway list. Some of the changes I needed to make had a cascading effect, so there are minor naming changes scattered throughout the code.
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// control tower entry (ignore)
Some small fixes and security updates.
2005-05-30 08:47:00 +00:00
} else if ( line_id == 19 ) {
Replace the data/Airports/basic.dat.gz and data/Airports/runways.dat.gz with a single apt.dat.gz file which is in the native X-Plane format. To do this I wrote a front end loader than builds the airport and runway list. Some of the changes I needed to make had a cascading effect, so there are minor naming changes scattered throughout the code.
2004-12-22 23:57:07 +00:00
// windsock entry (ignore)
Some small fixes and security updates.
2005-05-30 08:47:00 +00:00
} else if ( line_id == 15 ) {
Replace the data/Airports/basic.dat.gz and data/Airports/runways.dat.gz with a single apt.dat.gz file which is in the native X-Plane format. To do this I wrote a front end loader than builds the airport and runway list. Some of the changes I needed to make had a cascading effect, so there are minor naming changes scattered throughout the code.
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// custom startup locations (ignore)
Some small fixes and security updates.
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} else if ( line_id >= 50 && line_id <= 56 ) {
Replace the data/Airports/basic.dat.gz and data/Airports/runways.dat.gz with a single apt.dat.gz file which is in the native X-Plane format. To do this I wrote a front end loader than builds the airport and runway list. Some of the changes I needed to make had a cascading effect, so there are minor naming changes scattered throughout the code.
2004-12-22 23:57:07 +00:00
// frequency entries (ignore)
Some small fixes and security updates.
2005-05-30 08:47:00 +00:00
} else if ( line_id == 99 ) {
Replace the data/Airports/basic.dat.gz and data/Airports/runways.dat.gz with a single apt.dat.gz file which is in the native X-Plane format. To do this I wrote a front end loader than builds the airport and runway list. Some of the changes I needed to make had a cascading effect, so there are minor naming changes scattered throughout the code.
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SG_LOG( SG_GENERAL, SG_DEBUG, "End of file reached" );
} else {
SG_LOG( SG_GENERAL, SG_ALERT,
Some small fixes and security updates.
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"Unknown line(#" << line_num << ") in file: " << line );
Replace the data/Airports/basic.dat.gz and data/Airports/runways.dat.gz with a single apt.dat.gz file which is in the native X-Plane format. To do this I wrote a front end loader than builds the airport and runway list. Some of the changes I needed to make had a cascading effect, so there are minor naming changes scattered throughout the code.
2004-12-22 23:57:07 +00:00
exit(-1);
}
}
if ( !last_apt_id.empty()) {
if ( rwy_count > 0 ) {
double lat = rwy_lat_accum / (double)rwy_count;
double lon = rwy_lon_accum / (double)rwy_count;
airports->add( last_apt_id, lon, lat, last_apt_elev,
last_apt_name, false );
} else {
if ( !last_apt_id.length() ) {
SG_LOG(SG_GENERAL, SG_ALERT,
"ERROR: No runways for " << last_apt_id
<< " skipping." );
}
}
}
//
// Load the metar.dat file and update apt db with stations that
// have metar data.
//
sg_gzifstream metar_in( metar_file );
if ( !metar_in.is_open() ) {
SG_LOG( SG_GENERAL, SG_ALERT, "Cannot open file: " << metar_file );
}
string ident;
while ( metar_in ) {
metar_in >> ident;
if ( ident == "#" || ident == "//" ) {
metar_in >> skipeol;
} else {
David Luff: Attached is a patch to the airport data storage that I would like committed after review if acceptable. Currently the storage of airports mapped by ID is by locally created objects - about 12 Meg or so created on the stack if I am not mistaken. I've changed this to creating the airports on the heap, and storing pointers to them - see FGAirportList.add(...) in src/Airports/simple.cxx. I believe that this is probably better practice, and it's certainly cured some strange problems I was seeing when accessing the airport data with some gps unit code. Changes resulting from this have cascaded through a few files which access the data - 11 files are modified in all. Melchior and Durk - you might want to test this and shout if there are problems since the metar and traffic code are probably the biggest users of the airport data. I've also added a fuzzy search function that returns the next matching airport code in ASCII sequence in order to support gps units that have autocompletion of partially entered codes. More generally, the simple airport class seems to have grown a lot with the fairly recent addition of the parking, runway preference and schedule time code. It is no longer just an encapsulation of the global airport data file, and has grown to 552 bytes in size when unpopulated (about 1/2 a K!). My personal opinion is that we should look to just store the basic data in apt.dat for all global airports in a simple airport class, plus globally needed data (metar available?), and then have the traffic, AI and ATC subsystems create more advanced airports for themselves as needed in the area of interest. Once a significant number of airports worldwide have ground networks and parking defined, it will be impractical and unnecessary to store them all in memory. That's just a thought for the future though.
2005-09-20 20:26:57 +00:00
const FGAirport* a = airports->search( ident );
if ( a ) airports->has_metar( ident );
Replace the data/Airports/basic.dat.gz and data/Airports/runways.dat.gz with a single apt.dat.gz file which is in the native X-Plane format. To do this I wrote a front end loader than builds the airport and runway list. Some of the changes I needed to make had a cascading effect, so there are minor naming changes scattered throughout the code.
2004-12-22 23:57:07 +00:00
}
}
SG_LOG(SG_GENERAL, SG_INFO, "[FINISHED LOADING]");
return true;
}
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