300 lines
8.1 KiB
C++
300 lines
8.1 KiB
C++
// terrasync.cxx -- "JIT" scenery fetcher
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//
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// Written by Curtis Olson, started November 2002.
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//
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// Copyright (C) 2002 Curtis L. Olson - http://www.flightgear.org/~curt
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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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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#ifdef HAVE_WINDOWS_H
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#include <windows.h>
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#endif
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#include <stdlib.h> // atoi() atof() abs() system()
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#include <simgear/compiler.h>
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#include STL_IOSTREAM
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#include STL_STRING
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#include <plib/netSocket.h>
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#include <plib/ul.h>
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#include <simgear/bucket/newbucket.hxx>
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SG_USING_STD(string);
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SG_USING_STD(cout);
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SG_USING_STD(endl);
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static string server = "scenery.flightgear.org";
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static string source_module = "Scenery";
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static string source_base = server + (string)"::" + source_module;
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static string dest_base = "/dest/scenery/dir";
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// display usage
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static void usage( const string& prog ) {
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cout << "Usage: " << prog
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<< " -p <port> [ -s <rsync_source> ] -d <rsync_dest>" << endl;
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}
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// parse message
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static void parse_message( const string &msg, int *lat, int *lon ) {
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double dlat, dlon;
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string text = msg;
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// find GGA string and advance to start of lat
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string::size_type pos = text.find( "$GPGGA" );
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string tmp = text.substr( pos + 7 );
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pos = text.find( "," );
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tmp = tmp.substr( pos + 1 );
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// cout << "-> " << tmp << endl;
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// find lat then advance to start of hemisphere
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pos = tmp.find( "," );
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string lats = tmp.substr( 0, pos );
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dlat = atof( lats.c_str() ) / 100.0;
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tmp = tmp.substr( pos + 1 );
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// find N/S hemisphere and advance to start of lon
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if ( tmp.substr( 0, 1 ) == "S" ) {
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dlat = -dlat;
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}
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pos = tmp.find( "," );
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tmp = tmp.substr( pos + 1 );
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// find lon
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pos = tmp.find( "," );
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string lons = tmp.substr( 0, pos );
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dlon = atof( lons.c_str() ) / 100.0;
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tmp = tmp.substr( pos + 1 );
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// find E/W hemisphere and advance to start of lon
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if ( tmp.substr( 0, 1 ) == "W" ) {
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dlon = -dlon;
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}
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if ( dlat < 0 ) {
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*lat = (int)dlat - 1;
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} else {
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*lat = (int)dlat;
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}
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if ( dlon < 0 ) {
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*lon = (int)dlon - 1;
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} else {
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*lon = (int)dlon;
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}
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}
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// sync area
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static void sync_area( int lat, int lon ) {
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char NS, EW;
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int baselat, baselon;
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if ( lat < 0 ) {
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int base = (int)(lat / 10);
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if ( lat == base * 10 ) {
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baselat = base * 10;
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} else {
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baselat = (base - 1) * 10;
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}
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NS = 's';
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} else {
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baselat = (int)(lat / 10) * 10;
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NS = 'n';
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}
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if ( lon < 0 ) {
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int base = (int)(lon / 10);
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if ( lon == base * 10 ) {
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baselon = base * 10;
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} else {
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baselon = (base - 1) * 10;
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}
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EW = 'w';
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} else {
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baselon = (int)(lon / 10) * 10;
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EW = 'e';
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}
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char command[512];
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char container_dir[512];
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char dir[512];
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// Sync Terrain
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snprintf( container_dir, 512, "%s/Terrain/%c%03d%c%02d",
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dest_base.c_str(), EW, abs(baselon), NS, abs(baselat) );
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snprintf( command, 512, "mkdir -p %s", container_dir );
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cout << command << endl;
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system( command );
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snprintf( dir, 512, "Terrain/%c%03d%c%02d/%c%03d%c%02d",
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EW, abs(baselon), NS, abs(baselat),
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EW, abs(lon), NS, abs(lat) );
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snprintf( command, 512,
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"rsync --verbose --archive --delete --perms --owner --group %s/%s/ %s/%s",
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source_base.c_str(), dir, dest_base.c_str(), dir );
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cout << command << endl;
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system( command );
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// Sync Objects
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snprintf( container_dir, 512, "%s/Objects/%c%03d%c%02d",
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dest_base.c_str(), EW, abs(baselon), NS, abs(baselat) );
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snprintf( command, 512, "mkdir -p %s", container_dir );
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cout << command << endl;
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system( command );
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snprintf( dir, 512, "Objects/%c%03d%c%02d/%c%03d%c%02d",
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EW, abs(baselon), NS, abs(baselat),
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EW, abs(lon), NS, abs(lat) );
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snprintf( command, 512,
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"rsync --verbose --archive --delete --perms --owner --group %s/%s/ %s/%s",
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source_base.c_str(), dir, dest_base.c_str(), dir );
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cout << command << endl;
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system( command );
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}
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// sync areas
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static void sync_areas( int lat, int lon, int lat_dir, int lon_dir ) {
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// do current 1x1 degree area first
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sync_area( lat, lon );
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if ( lat_dir == 0 && lon_dir == 0 ) {
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// now do surrounding 8 1x1 degree areas.
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for ( int i = lat - 1; i <= lat + 1; ++i ) {
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for ( int j = lon - 1; j <= lon + 1; ++j ) {
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if ( i != lat || j != lon ) {
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sync_area( i, j );
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}
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}
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}
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} else {
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if ( lat_dir != 0 ) {
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sync_area( lat + lat_dir, lon );
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sync_area( lat + lat_dir, lon - 1 );
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sync_area( lat + lat_dir, lon + 1 );
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}
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if ( lon_dir != 0 ) {
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sync_area( lat, lon + lon_dir );
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sync_area( lat - 1, lon + lon_dir );
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sync_area( lat + 1, lon + lon_dir );
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}
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}
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}
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int main( int argc, char **argv ) {
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int port = 5501;
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char host[256] = ""; // accept messages from anyone
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// parse arguments
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int i = 1;
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while ( i < argc ) {
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if ( (string)argv[i] == "-p" ) {
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++i;
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port = atoi( argv[i] );
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} else if ( (string)argv[i] == "-s" ) {
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++i;
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source_base = argv[i];
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} else if ( (string)argv[i] == "-d" ) {
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++i;
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dest_base = argv[i];
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} else {
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usage( argv[0] );
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exit(-1);
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}
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++i;
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}
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// Must call this before any other net stuff
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netInit( &argc,argv );
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netSocket s;
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if ( ! s.open( false ) ) { // open a UDP socket
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printf("error opening socket\n");
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return -1;
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}
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s.setBlocking( false );
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if ( s.bind( host, port ) == -1 ) {
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printf("error binding to port %d\n", port);
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return -1;
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}
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char msg[256];
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int maxlen = 256;
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int len;
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int lat, lon;
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int last_lat = -9999;
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int last_lon = -9999;
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bool recv_msg = false;
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while ( true ) {
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recv_msg = false;
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while ( (len = s.recv(msg, maxlen, 0)) >= 0 ) {
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msg[len] = '\0';
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recv_msg = true;
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parse_message( msg, &lat, &lon );
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cout << "pos = " << lat << "," << lon << endl;
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}
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if ( recv_msg ) {
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if ( lat != last_lat || lon != last_lon ) {
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int lat_dir, lon_dir, dist;
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if ( last_lat == -9999 || last_lon == -9999 ) {
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lat_dir = lon_dir = 0;
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} else {
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dist = lat - last_lat;
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if ( dist != 0 ) {
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lat_dir = dist / abs(dist);
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} else {
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lat_dir = 0;
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}
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dist = lon - last_lon;
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if ( dist != 0 ) {
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lon_dir = dist / abs(dist);
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} else {
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lon_dir = 0;
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}
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}
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cout << "lat = " << lat << " lon = " << lon << endl;
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cout << "lat_dir = " << lat_dir << " " << " lon_dir = " << lon_dir << endl;
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sync_areas( lat, lon, lat_dir, lon_dir );
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}
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last_lat = lat;
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last_lon = lon;
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}
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ulSleep( 1 );
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}
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return 0;
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}
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