//
// simple.cxx -- a really simplistic class to manage airport ID,
-// lat, lon of the center of one of it's runways, and
-// elevation in feet.
+// lat, lon of the center of one of it's runways, and
+// elevation in feet.
//
// Written by Curtis Olson, started April 1998.
//
//
// $Id$
-
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
-#include <sys/types.h> // for gdbm open flags
-#include <sys/stat.h> // for gdbm open flags
-
-#ifdef HAVE_GDBM
-# include <gdbm.h>
-#else
-# include <simgear/gdbm/gdbm.h>
-#endif
+#include <math.h>
#include <simgear/compiler.h>
#include <simgear/debug/logstream.hxx>
-#include <simgear/misc/fgstream.hxx>
-
-#include <Main/options.hxx>
+#include <simgear/misc/sgstream.hxx>
#include STL_STRING
-#include STL_FUNCTIONAL
-#include STL_ALGORITHM
+#include STL_IOSTREAM
#include "simple.hxx"
-
-FGAirports::FGAirports( const string& file ) {
- dbf = gdbm_open( (char *)file.c_str(), 0, GDBM_READER, 0, NULL );
- if ( dbf == NULL ) {
- cout << "Error opening " << file << endl;
- exit(-1);
- } else {
- cout << "successfully opened " << file << endl;
- }
-}
+SG_USING_NAMESPACE(std);
+SG_USING_STD(istream);
-// search for the specified id
-bool
-FGAirports::search( const string& id, FGAirport* a ) const
+inline istream&
+operator >> ( istream& in, FGAirport& a )
{
- FGAirport *tmp;
- datum content;
- datum key;
-
- key.dptr = (char *)id.c_str();
- key.dsize = id.length();
-
- content = gdbm_fetch( dbf, key );
-
- cout << "gdbm_fetch() finished" << endl;
-
- if ( content.dptr != NULL ) {
- tmp = (FGAirport *)content.dptr;
-
- // a->id = tmp->id;
- a->longitude = tmp->longitude;
- a->latitude = tmp->latitude;
- a->elevation = tmp->elevation;
+ string junk;
+ in >> junk >> a.id >> a.latitude >> a.longitude >> a.elevation
+ >> a.code;
- free( content.dptr );
+ getline( in,a.name );
- } else {
- return false;
+ // Remove the space before the name
+ if ( a.name.substr(0,1) == " " ) {
+ a.name = a.name.erase(0,1);
}
- return true;
-}
-
-
-FGAirport
-FGAirports::search( const string& id ) const
-{
- FGAirport a, *tmp;
- datum content;
- datum key;
+ a.has_metar = false;
- key.dptr = (char *)id.c_str();
- key.dsize = id.length();
-
- content = gdbm_fetch( dbf, key );
-
- if ( content.dptr != NULL ) {
- tmp = (FGAirport *)content.dptr;
- a = *tmp;
- }
+#if 0
+ // As a quick seed for the has_metar value, only airports with
+ // four-letter codes can have metar stations
+ a.has_metar = (isalpha(a.id[0]) && isalpha(a.id[1]) && isalpha(a.id[2])
+ && isalpha(a.id[3]) && !a.id[4]);
+#endif
- return a;
+ return in;
}
-// Destructor
-FGAirports::~FGAirports( void ) {
- gdbm_close( dbf );
-}
-
+FGAirportList::FGAirportList( const string &airport_file,
+ const string &metar_file ) {
+ SG_LOG( SG_GENERAL, SG_INFO, "Reading simple airport list: "
+ << airport_file );
-// Constructor
-FGAirportsUtil::FGAirportsUtil() {
-}
+ // open the specified file for reading
+ sg_gzifstream apt_in( airport_file );
+ if ( !apt_in.is_open() ) {
+ SG_LOG( SG_GENERAL, SG_ALERT, "Cannot open file: " << airport_file );
+ exit(-1);
+ }
+ // skip header line
+ apt_in >> skipeol;
-// load the data
-int FGAirportsUtil::load( const string& file ) {
FGAirport a;
-
- airports.erase( airports.begin(), airports.end() );
-
- fg_gzifstream in( file );
- if ( !in.is_open() ) {
- FG_LOG( FG_GENERAL, FG_ALERT, "Cannot open file: " << file );
- exit(-1);
+ while ( apt_in ) {
+ apt_in >> a;
+ airports_by_id[a.id] = a;
+ airports_array.push_back( &airports_by_id[a.id] );
}
- /*
- // We can use the STL copy algorithm because the input
- // file doesn't contain and comments or blank lines.
- copy( istream_iterator<FGAirport,ptrdiff_t>(in.stream()),
- istream_iterator<FGAirport,ptrdiff_t>(),
- inserter( airports, airports.begin() ) );
- */
-
- // read in each line of the file
-
-#ifdef __MWERKS__
-
- in >> skipcomment;
- char c = 0;
- while ( in.get(c) && c != '\0' ) {
- in.putback(c);
- in >> a;
- airports.insert(a);
- in >> skipcomment;
- }
-#else
+ SG_LOG( SG_GENERAL, SG_INFO, "Reading simple metar station list: "
+ << metar_file );
- in >> skipcomment;
- while ( ! in.eof() ) {
- in >> a;
- airports.insert(a);
- in >> skipcomment;
+ // open the specified file for reading
+ sg_gzifstream metar_in( metar_file );
+ if ( !metar_in.is_open() ) {
+ SG_LOG( SG_GENERAL, SG_ALERT, "Cannot open file: " << metar_file );
}
-#endif
-
- return 1;
+ string ident;
+ while ( metar_in ) {
+ metar_in >> ident;
+ if ( ident == "#" || ident == "//" ) {
+ metar_in >> skipeol;
+ } else {
+ airport_map_iterator apt = airports_by_id.find( ident );
+ if ( apt == airports_by_id.end() ) {
+ SG_LOG( SG_GENERAL, SG_DEBUG, "no apt = " << ident );
+ } else {
+ SG_LOG( SG_GENERAL, SG_DEBUG, "metar = " << ident );
+ airports_by_id[ident].has_metar = true;
+ }
+ }
+ }
}
-// save the data in gdbm format
-bool FGAirportsUtil::dump_gdbm( const string& file ) {
-
- GDBM_FILE dbf;
+// search for the specified id
+FGAirport FGAirportList::search( const string& id) {
+ return airports_by_id[id];
+}
-#if !defined( MACOS )
- dbf = gdbm_open( (char *)file.c_str(), 0, GDBM_NEWDB | GDBM_FAST,
- S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH,
- NULL );
-#else
- dbf = gdbm_open( (char *)file.c_str(), 0, GDBM_NEWDB | GDBM_FAST,
- NULL, NULL );
-#endif
- if ( dbf == NULL ) {
- cout << "Error opening " << file << endl;
- exit(-1);
- } else {
- cout << "successfully opened " << file << endl;
+// search for the airport nearest the specified position
+FGAirport FGAirportList::search( double lon_deg, double lat_deg,
+ bool with_metar ) {
+ int closest = 0;
+ double min_dist = 360.0;
+ unsigned int i;
+ for ( i = 0; i < airports_array.size(); ++i ) {
+ // crude manhatten distance based on lat/lon difference
+ double d = fabs(lon_deg - airports_array[i]->longitude)
+ + fabs(lat_deg - airports_array[i]->latitude);
+ if ( d < min_dist ) {
+ if ( !with_metar || (with_metar && airports_array[i]->has_metar) ) {
+ closest = i;
+ min_dist = d;
+ }
+ }
}
- iterator current = airports.begin();
- const_iterator end = airports.end();
- while ( current != end ) {
- datum key;
- key.dptr = (char *)current->id.c_str();
- key.dsize = current->id.length();
-
- datum content;
- FGAirport tmp = *current;
- content.dptr = (char *)(& tmp);
- content.dsize = sizeof( *current );
-
- gdbm_store( dbf, key, content, GDBM_REPLACE );
-
- ++current;
- }
+ return *airports_array[closest];
+}
- gdbm_close( dbf );
- return true;
+// Destructor
+FGAirportList::~FGAirportList( void ) {
}
-
-// search for the specified id
-bool
-FGAirportsUtil::search( const string& id, FGAirport* a ) const
+int
+FGAirportList::size () const
{
- const_iterator it = airports.find( FGAirport(id) );
- if ( it != airports.end() )
- {
- *a = *it;
- return true;
- }
- else
- {
- return false;
- }
+ return airports_array.size();
}
-
-FGAirport
-FGAirportsUtil::search( const string& id ) const
+const FGAirport *FGAirportList::getAirport( int index ) const
{
- FGAirport a;
- this->search( id, &a );
- return a;
+ return airports_array[index];
}
-// Destructor
-FGAirportsUtil::~FGAirportsUtil( void ) {
+/**
+ * Mark the specified airport record as not having metar
+ */
+void FGAirportList::no_metar( const string &id ) {
+ airports_by_id[id].has_metar = false;
}
-
-
projects / flightgear.git / blobdiff