1 // options.cxx -- class to handle command line options
3 // Written by Curtis Olson, started April 1998.
5 // Copyright (C) 1998 Curtis L. Olson - curt@me.umn.edu
7 // This program is free software; you can redistribute it and/or
8 // modify it under the terms of the GNU General Public License as
9 // published by the Free Software Foundation; either version 2 of the
10 // License, or (at your option) any later version.
12 // This program is distributed in the hope that it will be useful, but
13 // WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 // General Public License for more details.
17 // You should have received a copy of the GNU General Public License
18 // along with this program; if not, write to the Free Software
19 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 #include <simgear/compiler.h>
29 #include <simgear/misc/exception.hxx>
30 #include <simgear/debug/logstream.hxx>
32 #include <math.h> // rint()
34 #include <stdlib.h> // atof(), atoi()
35 #include <string.h> // strcmp()
42 #include <simgear/math/sg_random.h>
43 #include <simgear/misc/sgstream.hxx>
44 #include <simgear/misc/sg_path.hxx>
45 #include <simgear/route/route.hxx>
46 #include <simgear/route/waypoint.hxx>
48 // #include <Include/general.hxx>
49 // #include <Airports/simple.hxx>
50 // #include <Cockpit/cockpit.hxx>
51 // #include <FDM/flight.hxx>
52 // #include <FDM/UIUCModel/uiuc_aircraftdir.h>
54 # include <NetworkOLK/network.h>
59 #include "globals.hxx"
60 #include "fg_init.hxx"
61 #include "fg_props.hxx"
62 #include "options.hxx"
64 #include "viewmgr.hxx"
69 SG_USING_NAMESPACE(std);
72 #define NEW_DEFAULT_MODEL_HZ 120
79 FG_OPTIONS_VERBOSE_HELP = 3,
80 FG_OPTIONS_SHOW_AIRCRAFT = 4
84 atof( const string& str )
88 // -dw- if ::atof is called, then we get an infinite loop
89 return std::atof( str.c_str() );
91 return ::atof( str.c_str() );
96 atoi( const string& str )
99 // -dw- if ::atoi is called, then we get an infinite loop
100 return std::atoi( str.c_str() );
102 return ::atoi( str.c_str() );
108 * Set a few fail-safe default property values.
110 * These should all be set in $FG_ROOT/preferences.xml, but just
111 * in case, we provide some initial sane values here. This method
112 * should be invoked *before* reading any init files.
117 // set a possibly independent location for scenery data
118 char *envp = ::getenv( "FG_SCENERY" );
120 if ( envp != NULL ) {
121 // fg_root could be anywhere, so default to environmental
122 // variable $FG_ROOT if it is set.
123 globals->set_fg_scenery(envp);
125 // Otherwise, default to Scenery being in $FG_ROOT/Scenery
126 globals->set_fg_scenery("");
128 // Position (deliberately out of range)
129 fgSetDouble("/position/longitude-deg", 9999.0);
130 fgSetDouble("/position/latitude-deg", 9999.0);
131 fgSetDouble("/position/altitude-ft", -9999.0);
134 fgSetDouble("/orientation/heading-deg", 270);
135 fgSetDouble("/orientation/roll-deg", 0);
136 fgSetDouble("/orientation/pitch-deg", 0.424);
139 fgSetDouble("/velocities/uBody-fps", 0.0);
140 fgSetDouble("/velocities/vBody-fps", 0.0);
141 fgSetDouble("/velocities/wBody-fps", 0.0);
142 fgSetDouble("/velocities/speed-north-fps", 0.0);
143 fgSetDouble("/velocities/speed-east-fps", 0.0);
144 fgSetDouble("/velocities/speed-down-fps", 0.0);
145 fgSetDouble("/velocities/airspeed-kt", 0.0);
146 fgSetDouble("/velocities/mach", 0.0);
149 fgSetDouble("/sim/presets/longitude-deg", 9999.0);
150 fgSetDouble("/sim/presets/latitude-deg", 9999.0);
151 fgSetDouble("/sim/presets/altitude-ft", -9999.0);
153 fgSetDouble("/sim/presets/heading-deg", 270);
154 fgSetDouble("/sim/presets/roll-deg", 0);
155 fgSetDouble("/sim/presets/pitch-deg", 0.424);
157 fgSetString("/sim/presets/speed-set", "knots");
158 fgSetDouble("/sim/presets/airspeed-kt", 0.0);
159 fgSetDouble("/sim/presets/mach", 0.0);
160 fgSetDouble("/sim/presets/uBody-fps", 0.0);
161 fgSetDouble("/sim/presets/vBody-fps", 0.0);
162 fgSetDouble("/sim/presets/wBody-fps", 0.0);
163 fgSetDouble("/sim/presets/speed-north-fps", 0.0);
164 fgSetDouble("/sim/presets/speed-east-fps", 0.0);
165 fgSetDouble("/sim/presets/speed-down-fps", 0.0);
167 fgSetBool("/sim/presets/onground", true);
168 fgSetBool("/sim/presets/trim", false);
171 fgSetBool("/sim/startup/game-mode", false);
172 fgSetBool("/sim/startup/splash-screen", true);
173 fgSetBool("/sim/startup/intro-music", true);
174 // we want mouse-pointer to have an undefined value if nothing is
175 // specified so we can do the right thing for voodoo-1/2 cards.
176 // fgSetString("/sim/startup/mouse-pointer", "disabled");
177 fgSetString("/sim/control-mode", "joystick");
178 fgSetBool("/sim/auto-coordination", false);
180 fgSetString("/sim/startup/browser-app", "netscape");
182 fgSetString("/sim/startup/browser-app", "webrun.bat");
184 fgSetInt("/sim/log-level", SG_WARN);
187 fgSetBool("/sim/hud/visibility", false);
188 fgSetBool("/sim/panel/visibility", true);
189 fgSetBool("/sim/sound/audible", true);
190 fgSetBool("/sim/hud/antialiased", false);
192 // Flight Model options
193 fgSetString("/sim/flight-model", "jsb");
194 fgSetString("/sim/aero", "c172");
195 fgSetInt("/sim/model-hz", NEW_DEFAULT_MODEL_HZ);
196 fgSetInt("/sim/speed-up", 1);
199 fgSetString("/sim/rendering/fog", "nicest");
200 fgSetBool("/environment/clouds/status", true);
201 fgSetBool("/sim/startup/fullscreen", false);
202 fgSetBool("/sim/rendering/shading", true);
203 fgSetBool("/sim/rendering/skyblend", true);
204 fgSetBool("/sim/rendering/textures", true);
205 fgSetBool("/sim/rendering/wireframe", false);
206 fgSetBool("/sim/rendering/distance-attenuation", false);
207 fgSetInt("/sim/startup/xsize", 800);
208 fgSetInt("/sim/startup/ysize", 600);
209 fgSetInt("/sim/rendering/bits-per-pixel", 16);
210 fgSetString("/sim/view-mode", "pilot");
211 fgSetDouble("/sim/current-view/heading-offset-deg", 0);
214 fgSetString("/sim/startup/units", "feet");
215 fgSetString("/sim/hud/frame-stat-type", "tris");
218 fgSetInt("/sim/startup/time-offset", 0);
219 fgSetString("/sim/startup/time-offset-type", "system-offset");
220 fgSetLong("/sim/time/cur-time-override", 0);
222 fgSetBool("/sim/networking/network-olk", false);
223 fgSetString("/sim/networking/call-sign", "Johnny");
226 fgSetBool("/sim/freeze/master", false);
227 fgSetBool("/sim/freeze/position", false);
228 fgSetBool("/sim/freeze/clock", false);
229 fgSetBool("/sim/freeze/fuel", false);
232 fgSetString("/sim/multiplay/callsign", "callsign");
233 fgSetString("/sim/multiplay/rxhost", "0");
234 fgSetString("/sim/multiplay/txhost", "0");
235 fgSetInt("/sim/multiplay/rxport", 0);
236 fgSetInt("/sim/multiplay/txport", 0);
243 parse_wind (const string &wind, double * min_hdg, double * max_hdg,
244 double * speed, double * gust)
246 string::size_type pos = wind.find('@');
247 if (pos == string::npos)
249 string dir = wind.substr(0, pos);
250 string spd = wind.substr(pos+1);
252 if (pos == string::npos) {
253 *min_hdg = *max_hdg = atof(dir.c_str());
255 *min_hdg = atof(dir.substr(0,pos).c_str());
256 *max_hdg = atof(dir.substr(pos+1).c_str());
259 if (pos == string::npos) {
260 *speed = *gust = atof(spd.c_str());
262 *speed = atof(spd.substr(0,pos).c_str());
263 *gust = atof(spd.substr(pos+1).c_str());
268 // parse a time string ([+/-]%f[:%f[:%f]]) into hours
270 parse_time(const string& time_in) {
271 char *time_str, num[256];
272 double hours, minutes, seconds;
277 time_str = (char *)time_in.c_str();
279 // printf("parse_time(): %s\n", time_str);
282 if ( strlen(time_str) ) {
283 if ( time_str[0] == '+' ) {
286 } else if ( time_str[0] == '-' ) {
291 // printf("sign = %d\n", sign);
294 if ( strlen(time_str) ) {
296 while ( (time_str[0] != ':') && (time_str[0] != '\0') ) {
297 num[i] = time_str[0];
301 if ( time_str[0] == ':' ) {
306 // printf("hours = %.2lf\n", hours);
312 if ( strlen(time_str) ) {
314 while ( (time_str[0] != ':') && (time_str[0] != '\0') ) {
315 num[i] = time_str[0];
319 if ( time_str[0] == ':' ) {
324 // printf("minutes = %.2lf\n", minutes);
326 result += minutes / 60.0;
330 if ( strlen(time_str) ) {
332 while ( (time_str[0] != ':') && (time_str[0] != '\0') ) {
333 num[i] = time_str[0];
339 // printf("seconds = %.2lf\n", seconds);
341 result += seconds / 3600.0;
344 SG_LOG( SG_GENERAL, SG_INFO, " parse_time() = " << sign * result );
346 return(sign * result);
350 // parse a date string (yyyy:mm:dd:hh:mm:ss) into a time_t (seconds)
352 parse_date( const string& date)
355 char * date_str, num[256];
357 // initialize to zero
364 gmt.tm_isdst = 0; // ignore daylight savings time for the moment
365 date_str = (char *)date.c_str();
367 if ( strlen(date_str) ) {
369 while ( (date_str[0] != ':') && (date_str[0] != '\0') ) {
370 num[i] = date_str[0];
374 if ( date_str[0] == ':' ) {
378 gmt.tm_year = atoi(num) - 1900;
381 if ( strlen(date_str) ) {
383 while ( (date_str[0] != ':') && (date_str[0] != '\0') ) {
384 num[i] = date_str[0];
388 if ( date_str[0] == ':' ) {
392 gmt.tm_mon = atoi(num) -1;
395 if ( strlen(date_str) ) {
397 while ( (date_str[0] != ':') && (date_str[0] != '\0') ) {
398 num[i] = date_str[0];
402 if ( date_str[0] == ':' ) {
406 gmt.tm_mday = atoi(num);
409 if ( strlen(date_str) ) {
411 while ( (date_str[0] != ':') && (date_str[0] != '\0') ) {
412 num[i] = date_str[0];
416 if ( date_str[0] == ':' ) {
420 gmt.tm_hour = atoi(num);
423 if ( strlen(date_str) ) {
425 while ( (date_str[0] != ':') && (date_str[0] != '\0') ) {
426 num[i] = date_str[0];
430 if ( date_str[0] == ':' ) {
434 gmt.tm_min = atoi(num);
437 if ( strlen(date_str) ) {
439 while ( (date_str[0] != ':') && (date_str[0] != '\0') ) {
440 num[i] = date_str[0];
444 if ( date_str[0] == ':' ) {
448 gmt.tm_sec = atoi(num);
450 time_t theTime = sgTimeGetGMT( gmt.tm_year, gmt.tm_mon, gmt.tm_mday,
451 gmt.tm_hour, gmt.tm_min, gmt.tm_sec );
452 //printf ("Date is %s\n", ctime(&theTime));
453 //printf ("in seconds that is %d\n", theTime);
459 // parse angle in the form of [+/-]ddd:mm:ss into degrees
461 parse_degree( const string& degree_str) {
462 double result = parse_time( degree_str );
464 // printf("Degree = %.4f\n", result);
470 // parse time offset string into seconds
472 parse_time_offset( const string& time_str) {
475 // printf("time offset = %s\n", time_str);
478 result = (int)rint(parse_time(time_str) * 3600.0);
480 result = (int)(parse_time(time_str) * 3600.0);
483 // printf("parse_time_offset(): %d\n", result);
489 // Parse --fov=x.xx type option
491 parse_fov( const string& arg ) {
492 double fov = atof(arg);
494 if ( fov < FG_FOV_MIN ) { fov = FG_FOV_MIN; }
495 if ( fov > FG_FOV_MAX ) { fov = FG_FOV_MAX; }
497 fgSetDouble("/sim/current-view/field-of-view", fov);
499 // printf("parse_fov(): result = %.4f\n", fov);
505 // Parse I/O channel option
507 // Format is "--protocol=medium,direction,hz,medium_options,..."
509 // protocol = { native, nmea, garmin, fgfs, rul, pve, etc. }
510 // medium = { serial, socket, file, etc. }
511 // direction = { in, out, bi }
512 // hz = number of times to process channel per second (floating
513 // point values are ok.
515 // Serial example "--nmea=serial,dir,hz,device,baud" where
517 // device = OS device name of serial line to be open()'ed
518 // baud = {300, 1200, 2400, ..., 230400}
520 // Socket exacmple "--native=socket,dir,hz,machine,port,style" where
522 // machine = machine name or ip address if client (leave empty if server)
523 // port = port, leave empty to let system choose
524 // style = tcp or udp
526 // File example "--garmin=file,dir,hz,filename" where
528 // filename = file system file name
531 add_channel( const string& type, const string& channel_str ) {
532 SG_LOG(SG_GENERAL, SG_INFO, "Channel string = " << channel_str );
534 globals->get_channel_options_list()->push_back( type + "," + channel_str );
536 // cout << "here" << endl;
543 setup_wind (double min_hdg, double max_hdg, double speed, double gust)
545 fgDefaultWeatherValue("wind-from-heading-deg", min_hdg);
546 fgDefaultWeatherValue("wind-speed-kt", speed);
548 SG_LOG(SG_GENERAL, SG_INFO, "WIND: " << min_hdg << '@' <<
549 speed << " knots" << endl);
553 speed *= SG_NM_TO_METER * SG_METER_TO_FEET * (1.0/3600);
554 while (min_hdg > 360)
558 min_hdg *= SGD_DEGREES_TO_RADIANS;
559 fgSetDouble("/environment/wind-from-north-fps", speed * cos(dir));
560 fgSetDouble("/environment/wind-from-east-fps", speed * sin(dir));
561 #endif // FG_WEATHERCM
565 // Parse --wp=ID[@alt]
567 parse_wp( const string& arg ) {
571 string::size_type pos = arg.find( "@" );
572 if ( pos != string::npos ) {
573 id = arg.substr( 0, pos );
574 alt_str = arg.substr( pos + 1 );
575 // cout << "id str = " << id << " alt str = " << alt_str << endl;
576 alt = atof( alt_str.c_str() );
577 if ( !strcmp(fgGetString("/sim/startup/units"), "feet") ) {
578 alt *= SG_FEET_TO_METER;
585 if ( fgFindAirportID( id, &a ) ) {
586 SGWayPoint wp( a.longitude, a.latitude, alt, SGWayPoint::WGS84, id );
587 globals->get_route()->add_waypoint( wp );
596 // Parse --flight-plan=[file]
598 parse_flightplan(const string& arg)
600 sg_gzifstream in(arg.c_str());
601 if ( !in.is_open() ) {
607 #if defined( macintosh )
608 getline( in, line, '\r' );
610 getline( in, line, '\n' );
613 // catch extraneous (DOS) line ending character
614 if ( line[line.length() - 1] < 32 ) {
615 line = line.substr( 0, line.length()-1 );
628 fgOptLanguage( const char *arg )
630 globals->set_locale( fgInitLocale( arg ) );
631 return FG_OPTIONS_OK;
637 fgSetString("/sim/presets/airport-id", "");
638 fgSetString("/sim/presets/vor-id", "");
639 fgSetString("/sim/presets/ndb-id", "");
640 fgSetString("/sim/presets/fix", "");
644 fgOptVOR( const char * arg )
647 fgSetString("/sim/presets/vor-id", arg);
648 return FG_OPTIONS_OK;
652 fgOptNDB( const char * arg )
655 fgSetString("/sim/presets/ndb-id", arg);
656 return FG_OPTIONS_OK;
660 fgOptFIX( const char * arg )
663 fgSetString("/sim/presets/fix", arg);
664 return FG_OPTIONS_OK;
668 fgOptLon( const char *arg )
671 fgSetDouble("/sim/presets/longitude-deg", parse_degree( arg ));
672 fgSetDouble("/position/longitude-deg", parse_degree( arg ));
673 return FG_OPTIONS_OK;
677 fgOptLat( const char *arg )
680 fgSetDouble("/sim/presets/latitude-deg", parse_degree( arg ));
681 fgSetDouble("/position/latitude-deg", parse_degree( arg ));
682 return FG_OPTIONS_OK;
686 fgOptAltitude( const char *arg )
688 fgSetBool("/sim/presets/onground", false);
689 if ( !strcmp(fgGetString("/sim/startup/units"), "feet") )
690 fgSetDouble("/sim/presets/altitude-ft", atof( arg ));
692 fgSetDouble("/sim/presets/altitude-ft",
693 atof( arg ) * SG_METER_TO_FEET);
694 return FG_OPTIONS_OK;
698 fgOptUBody( const char *arg )
700 fgSetString("/sim/presets/speed-set", "UVW");
701 if ( !strcmp(fgGetString("/sim/startup/units"), "feet") )
702 fgSetDouble("/sim/presets/uBody-fps", atof( arg ));
704 fgSetDouble("/sim/presets/uBody-fps",
705 atof( arg ) * SG_METER_TO_FEET);
706 return FG_OPTIONS_OK;
710 fgOptVBody( const char *arg )
712 fgSetString("/sim/presets/speed-set", "UVW");
713 if ( !strcmp(fgGetString("/sim/startup/units"), "feet") )
714 fgSetDouble("/sim/presets/vBody-fps", atof( arg ));
716 fgSetDouble("/sim/presets/vBody-fps",
717 atof( arg ) * SG_METER_TO_FEET);
718 return FG_OPTIONS_OK;
722 fgOptWBody( const char *arg )
724 fgSetString("/sim/presets/speed-set", "UVW");
725 if ( !strcmp(fgGetString("/sim/startup/units"), "feet") )
726 fgSetDouble("/sim/presets/wBody-fps", atof(arg));
728 fgSetDouble("/sim/presets/wBody-fps",
729 atof(arg) * SG_METER_TO_FEET);
730 return FG_OPTIONS_OK;
734 fgOptVNorth( const char *arg )
736 fgSetString("/sim/presets/speed-set", "NED");
737 if ( !strcmp(fgGetString("/sim/startup/units"), "feet") )
738 fgSetDouble("/sim/presets/speed-north-fps", atof( arg ));
740 fgSetDouble("/sim/presets/speed-north-fps",
741 atof( arg ) * SG_METER_TO_FEET);
742 return FG_OPTIONS_OK;
746 fgOptVEast( const char *arg )
748 fgSetString("/sim/presets/speed-set", "NED");
749 if ( !strcmp(fgGetString("/sim/startup/units"), "feet") )
750 fgSetDouble("/sim/presets/speed-east-fps", atof(arg));
752 fgSetDouble("/sim/presets/speed-east-fps",
753 atof(arg) * SG_METER_TO_FEET);
754 return FG_OPTIONS_OK;
758 fgOptVDown( const char *arg )
760 fgSetString("/sim/presets/speed-set", "NED");
761 if ( !strcmp(fgGetString("/sim/startup/units"), "feet") )
762 fgSetDouble("/sim/presets/speed-down-fps", atof(arg));
764 fgSetDouble("/sim/presets/speed-down-fps",
765 atof(arg) * SG_METER_TO_FEET);
766 return FG_OPTIONS_OK;
770 fgOptVc( const char *arg )
772 // fgSetString("/sim/presets/speed-set", "knots");
773 // fgSetDouble("/velocities/airspeed-kt", atof(arg.substr(5)));
774 fgSetString("/sim/presets/speed-set", "knots");
775 fgSetDouble("/sim/presets/airspeed-kt", atof(arg));
776 return FG_OPTIONS_OK;
780 fgOptMach( const char *arg )
782 fgSetString("/sim/presets/speed-set", "mach");
783 fgSetDouble("/sim/presets/mach", atof(arg));
784 return FG_OPTIONS_OK;
788 fgOptRoc( const char *arg )
790 fgSetDouble("/velocities/vertical-speed-fps", atof(arg)/60);
791 return FG_OPTIONS_OK;
795 fgOptFgRoot( const char *arg )
797 globals->set_fg_root(arg);
798 return FG_OPTIONS_OK;
802 fgOptFgScenery( const char *arg )
804 globals->set_fg_scenery(arg);
805 return FG_OPTIONS_OK;
809 fgOptFov( const char *arg )
812 return FG_OPTIONS_OK;
816 fgOptGeometry( const char *arg )
818 bool geometry_ok = true;
819 int xsize = 0, ysize = 0;
820 string geometry = arg;
821 string::size_type i = geometry.find('x');
823 if (i != string::npos) {
824 xsize = atoi(geometry.substr(0, i));
825 ysize = atoi(geometry.substr(i+1));
830 if ( xsize <= 0 || ysize <= 0 ) {
836 if ( !geometry_ok ) {
837 SG_LOG( SG_GENERAL, SG_ALERT, "Unknown geometry: " << geometry );
838 SG_LOG( SG_GENERAL, SG_ALERT,
839 "Setting geometry to " << xsize << 'x' << ysize << '\n');
841 SG_LOG( SG_GENERAL, SG_INFO,
842 "Setting geometry to " << xsize << 'x' << ysize << '\n');
843 fgSetInt("/sim/startup/xsize", xsize);
844 fgSetInt("/sim/startup/ysize", ysize);
846 return FG_OPTIONS_OK;
850 fgOptBpp( const char *arg )
852 string bits_per_pix = arg;
853 if ( bits_per_pix == "16" ) {
854 fgSetInt("/sim/rendering/bits-per-pixel", 16);
855 } else if ( bits_per_pix == "24" ) {
856 fgSetInt("/sim/rendering/bits-per-pixel", 24);
857 } else if ( bits_per_pix == "32" ) {
858 fgSetInt("/sim/rendering/bits-per-pixel", 32);
860 SG_LOG(SG_GENERAL, SG_ALERT, "Unsupported bpp " << bits_per_pix);
862 return FG_OPTIONS_OK;
866 fgOptTimeOffset( const char *arg )
868 fgSetInt("/sim/startup/time-offset",
869 parse_time_offset( arg ));
870 fgSetString("/sim/startup/time-offset-type", "system-offset");
871 return FG_OPTIONS_OK;
875 fgOptStartDateSys( const char *arg )
877 fgSetInt("/sim/startup/time-offset", parse_date( arg ) );
878 fgSetString("/sim/startup/time-offset-type", "system");
879 return FG_OPTIONS_OK;
883 fgOptStartDateLat( const char *arg )
885 fgSetInt("/sim/startup/time-offset", parse_date( arg ) );
886 fgSetString("/sim/startup/time-offset-type", "latitude");
887 return FG_OPTIONS_OK;
891 fgOptStartDateGmt( const char *arg )
893 fgSetInt("/sim/startup/time-offset", parse_date( arg ) );
894 fgSetString("/sim/startup/time-offset-type", "gmt");
895 return FG_OPTIONS_OK;
898 #ifdef FG_NETWORK_OLK
900 fgOptNetHud( const char *arg )
902 fgSetBool("/sim/hud/net-display", true);
903 net_hud_display = 1; // FIXME
904 return FG_OPTIONS_OK;
909 fgOptTraceRead( const char *arg )
912 SG_LOG(SG_GENERAL, SG_INFO, "Tracing reads for property " << name);
913 fgGetNode(name.c_str(), true)
914 ->setAttribute(SGPropertyNode::TRACE_READ, true);
915 return FG_OPTIONS_OK;
919 fgOptTraceWrite( const char *arg )
922 SG_LOG(SG_GENERAL, SG_INFO, "Tracing writes for property " << name);
923 fgGetNode(name.c_str(), true)
924 ->setAttribute(SGPropertyNode::TRACE_WRITE, true);
925 return FG_OPTIONS_OK;
929 fgOptViewOffset( const char *arg )
931 // $$$ begin - added VS Renganathan, 14 Oct 2K
932 // for multi-window outside window imagery
933 string woffset = arg;
934 double default_view_offset = 0.0;
935 if ( woffset == "LEFT" ) {
936 default_view_offset = SGD_PI * 0.25;
937 } else if ( woffset == "RIGHT" ) {
938 default_view_offset = SGD_PI * 1.75;
939 } else if ( woffset == "CENTER" ) {
940 default_view_offset = 0.00;
942 default_view_offset = atof( woffset.c_str() ) * SGD_DEGREES_TO_RADIANS;
944 /* apparently not used (CLO, 11 Jun 2002)
945 FGViewer *pilot_view =
946 (FGViewer *)globals->get_viewmgr()->get_view( 0 ); */
947 // this will work without calls to the viewer...
948 fgSetDouble( "/sim/current-view/heading-offset-deg",
949 default_view_offset * SGD_RADIANS_TO_DEGREES );
950 // $$$ end - added VS Renganathan, 14 Oct 2K
951 return FG_OPTIONS_OK;
955 fgOptVisibilityMeters( const char *arg )
957 double visibility = atof( arg );
958 fgDefaultWeatherValue("visibility-m", visibility);
959 return FG_OPTIONS_OK;
963 fgOptVisibilityMiles( const char *arg )
965 double visibility = atof( arg ) * 5280.0 * SG_FEET_TO_METER;
966 fgDefaultWeatherValue("visibility-m", visibility);
967 return FG_OPTIONS_OK;
971 fgOptRandomWind( const char *arg )
973 double min_hdg = sg_random() * 360.0;
974 double max_hdg = min_hdg + (20 - sqrt(sg_random() * 400));
975 double speed = 40 - sqrt(sg_random() * 1600.0);
976 double gust = speed + (10 - sqrt(sg_random() * 100));
977 setup_wind(min_hdg, max_hdg, speed, gust);
978 return FG_OPTIONS_OK;
982 fgOptWind( const char *arg )
984 double min_hdg, max_hdg, speed, gust;
985 if (!parse_wind( arg, &min_hdg, &max_hdg, &speed, &gust)) {
986 SG_LOG( SG_GENERAL, SG_ALERT, "bad wind value " << arg );
987 return FG_OPTIONS_ERROR;
989 setup_wind(min_hdg, max_hdg, speed, gust);
990 return FG_OPTIONS_OK;
994 fgOptTurbulence( const char *arg)
996 fgDefaultWeatherValue("turbulence-norm", atof(arg));
997 return FG_OPTIONS_OK;
1001 fgOptWp( const char *arg )
1004 return FG_OPTIONS_OK;
1008 fgOptFlightPlan( const char *arg )
1010 parse_flightplan ( arg );
1011 return FG_OPTIONS_OK;
1015 fgOptConfig( const char *arg )
1019 readProperties(file, globals->get_props());
1020 } catch (const sg_exception &e) {
1021 string message = "Error loading config file: ";
1022 message += e.getFormattedMessage();
1023 SG_LOG(SG_INPUT, SG_ALERT, message);
1026 return FG_OPTIONS_OK;
1029 static map<string,size_t> fgOptionMap;
1032 option has_param type property b_param s_param func
1035 option : name of the option
1036 has_param : option is --name=value if true or --name if false
1037 type : OPTION_BOOL - property is a boolean
1038 OPTION_STRING - property is a string
1039 OPTION_DOUBLE - property is a double
1040 OPTION_INT - property is an integer
1041 OPTION_CHANNEL - name of option is the name of a channel
1042 OPTION_FUNC - the option trigger a function
1043 b_param : if type==OPTION_BOOL,
1044 value set to the property (has_param is false for boolean)
1045 s_param : if type==OPTION_STRING,
1046 value set to the property if has_param is false
1047 func : function called if type==OPTION_FUNC. if has_param is true,
1048 the value is passed to the function as a string, otherwise,
1051 For OPTION_DOUBLE and OPTION_INT, the parameter value is converted into a
1052 double or an integer and set to the property.
1054 For OPTION_CHANNEL, add_channel is called with the parameter value as the
1058 enum OptionType { OPTION_BOOL, OPTION_STRING, OPTION_DOUBLE, OPTION_INT, OPTION_CHANNEL, OPTION_FUNC };
1062 enum OptionType type;
1066 int (*func)( const char * );
1067 } fgOptionArray[] = {
1069 {"language", true, OPTION_FUNC, "", false, "", fgOptLanguage },
1070 {"disable-game-mode", false, OPTION_BOOL, "/sim/startup/game-mode", false, "", 0 },
1071 {"enable-game-mode", false, OPTION_BOOL, "/sim/startup/game-mode", true, "", 0 },
1072 {"disable-splash-screen", false, OPTION_BOOL, "/sim/startup/splash-screen", false, "", 0 },
1073 {"enable-splash-screen", false, OPTION_BOOL, "/sim/startup/splash-screen", true, "", 0 },
1074 {"disable-intro-music", false, OPTION_BOOL, "/sim/startup/intro-music", false, "", 0 },
1075 {"enable-intro-music", false, OPTION_BOOL, "/sim/startup/intro-music", true, "", 0 },
1076 {"disable-mouse-pointer", false, OPTION_STRING, "/sim/startup/mouse-pointer", false, "disabled", 0 },
1077 {"enable-mouse-pointer", false, OPTION_STRING, "/sim/startup/mouse-pointer", false, "enabled", 0 },
1078 {"disable-random-objects", false, OPTION_BOOL, "/sim/rendering/random-objects", false, "", 0 },
1079 {"enable-random-objects", false, OPTION_BOOL, "/sim/rendering/random-objects", true, "", 0 },
1080 {"disable-freeze", false, OPTION_BOOL, "/sim/freeze/master", false, "", 0 },
1081 {"enable-freeze", false, OPTION_BOOL, "/sim/freeze/master", true, "", 0 },
1082 {"disable-fuel-freeze", false, OPTION_BOOL, "/sim/freeze/fuel", false, "", 0 },
1083 {"enable-fuel-freeze", false, OPTION_BOOL, "/sim/freeze/fuel", true, "", 0 },
1084 {"disable-clock-freeze", false, OPTION_BOOL, "/sim/freeze/clock", false, "", 0 },
1085 {"enable-clock-freeze", false, OPTION_BOOL, "/sim/freeze/clock", true, "", 0 },
1086 {"disable-anti-alias-hud", false, OPTION_BOOL, "/sim/hud/antialiased", false, "", 0 },
1087 {"enable-anti-alias-hud", false, OPTION_BOOL, "/sim/hud/antialiased", true, "", 0 },
1088 {"control", true, OPTION_STRING, "/sim/control-mode", false, "", 0 },
1089 {"disable-auto-coordination", false, OPTION_BOOL, "/sim/auto-coordination", false, "", 0 },
1090 {"enable-auto-coordination", false, OPTION_BOOL, "/sim/auto-coordination", true, "", 0 },
1091 {"browser-app", true, OPTION_STRING, "/sim/startup/browser-app", false, "", 0 },
1092 {"disable-hud", false, OPTION_BOOL, "/sim/hud/visibility", false, "", 0 },
1093 {"enable-hud", false, OPTION_BOOL, "/sim/hud/visibility", true, "", 0 },
1094 {"disable-panel", false, OPTION_BOOL, "/sim/panel/visibility", false, "", 0 },
1095 {"enable-panel", false, OPTION_BOOL, "/sim/panel/visibility", true, "", 0 },
1096 {"disable-sound", false, OPTION_BOOL, "/sim/sound/audible", false, "", 0 },
1097 {"enable-sound", false, OPTION_BOOL, "/sim/sound/audible", true, "", 0 },
1098 {"airport", true, OPTION_STRING, "/sim/presets/airport-id", false, "", 0 },
1099 {"airport-id", true, OPTION_STRING, "/sim/presets/airport-id", false, "", 0 },
1100 {"runway", true, OPTION_STRING, "/sim/presets/runway", false, "", 0 },
1101 {"vor", true, OPTION_FUNC, "", false, "", fgOptVOR },
1102 {"ndb", true, OPTION_FUNC, "", false, "", fgOptNDB },
1103 {"fix", true, OPTION_FUNC, "", false, "", fgOptFIX },
1104 {"offset-distance", true, OPTION_DOUBLE, "/sim/presets/offset-distance", false, "", 0 },
1105 {"offset-azimuth", true, OPTION_DOUBLE, "/sim/presets/offset-azimuth", false, "", 0 },
1106 {"lon", true, OPTION_FUNC, "", false, "", fgOptLon },
1107 {"lat", true, OPTION_FUNC, "", false, "", fgOptLat },
1108 {"altitude", true, OPTION_FUNC, "", false, "", fgOptAltitude },
1109 {"uBody", true, OPTION_FUNC, "", false, "", fgOptUBody },
1110 {"vBody", true, OPTION_FUNC, "", false, "", fgOptVBody },
1111 {"wBody", true, OPTION_FUNC, "", false, "", fgOptWBody },
1112 {"vNorth", true, OPTION_FUNC, "", false, "", fgOptVNorth },
1113 {"vEast", true, OPTION_FUNC, "", false, "", fgOptVEast },
1114 {"vDown", true, OPTION_FUNC, "", false, "", fgOptVDown },
1115 {"vc", true, OPTION_FUNC, "", false, "", fgOptVc },
1116 {"mach", true, OPTION_FUNC, "", false, "", fgOptMach },
1117 {"heading", true, OPTION_DOUBLE, "/sim/presets/heading-deg", false, "", 0 },
1118 {"roll", true, OPTION_DOUBLE, "/sim/presets/roll-deg", false, "", 0 },
1119 {"pitch", true, OPTION_DOUBLE, "/sim/presets/pitch-deg", false, "", 0 },
1120 {"glideslope", true, OPTION_DOUBLE, "/sim/presets/glideslope-deg", false, "", 0 },
1121 {"roc", true, OPTION_FUNC, "", false, "", fgOptRoc },
1122 {"fg-root", true, OPTION_FUNC, "", false, "", fgOptFgRoot },
1123 {"fg-scenery", true, OPTION_FUNC, "", false, "", fgOptFgScenery },
1124 {"fdm", true, OPTION_STRING, "/sim/flight-model", false, "", 0 },
1125 {"aero", true, OPTION_STRING, "/sim/aero", false, "", 0 },
1126 {"aircraft-dir", true, OPTION_STRING, "/sim/aircraft-dir", false, "", 0 },
1127 {"model-hz", true, OPTION_INT, "/sim/model-hz", false, "", 0 },
1128 {"speed", true, OPTION_INT, "/sim/speed-up", false, "", 0 },
1129 {"trim", false, OPTION_BOOL, "/sim/presets/trim", true, "", 0 },
1130 {"notrim", false, OPTION_BOOL, "/sim/presets/trim", false, "", 0 },
1131 {"on-ground", false, OPTION_BOOL, "/sim/presets/onground", true, "", 0 },
1132 {"in-air", false, OPTION_BOOL, "/sim/presets/onground", false, "", 0 },
1133 {"fog-disable", false, OPTION_STRING, "/sim/rendering/fog", false, "disabled", 0 },
1134 {"fog-fastest", false, OPTION_STRING, "/sim/rendering/fog", false, "fastest", 0 },
1135 {"fog-nicest", false, OPTION_STRING, "/sim/fog", false, "nicest", 0 },
1136 {"disable-distance-attenuation", false, OPTION_BOOL, "/environment/distance-attenuation", false, "", 0 },
1137 {"enable-distance-attenuation", false, OPTION_BOOL, "/environment/distance-attenuation", true, "", 0 },
1138 {"disable-clouds", false, OPTION_BOOL, "/environment/clouds/status", false, "", 0 },
1139 {"enable-clouds", false, OPTION_BOOL, "/environment/clouds/status", true, "", 0 },
1140 #ifdef FG_USE_CLOUDS_3D
1141 {"disable-clouds3d", false, OPTION_BOOL, "/sim/rendering/clouds3d", false, "", 0 },
1142 {"enable-clouds3d", false, OPTION_BOOL, "/sim/rendering/clouds3d", true, "", 0 },
1144 {"fov", true, OPTION_FUNC, "", false, "", fgOptFov },
1145 {"disable-fullscreen", false, OPTION_BOOL, "/sim/startup/fullscreen", false, "", 0 },
1146 {"enable-fullscreen", false, OPTION_BOOL, "/sim/startup/fullscreen", true, "", 0 },
1147 {"shading-flat", false, OPTION_BOOL, "/sim/rendering/shading", false, "", 0 },
1148 {"shading-smooth", false, OPTION_BOOL, "/sim/rendering/shading", true, "", 0 },
1149 {"disable-skyblend", false, OPTION_BOOL, "/sim/rendering/skyblend", false, "", 0 },
1150 {"enable-skyblend", false, OPTION_BOOL, "/sim/rendering/skyblend", true, "", 0 },
1151 {"disable-textures", false, OPTION_BOOL, "/sim/rendering/textures", false, "", 0 },
1152 {"enable-textures", false, OPTION_BOOL, "/sim/rendering/textures", true, "", 0 },
1153 {"disable-wireframe", false, OPTION_BOOL, "/sim/rendering/wireframe", false, "", 0 },
1154 {"enable-wireframe", false, OPTION_BOOL, "/sim/rendering/wireframe", true, "", 0 },
1155 {"geometry", true, OPTION_FUNC, "", false, "", fgOptGeometry },
1156 {"bpp", true, OPTION_FUNC, "", false, "", fgOptBpp },
1157 {"units-feet", false, OPTION_STRING, "/sim/startup/units", false, "feet", 0 },
1158 {"units-meters", false, OPTION_STRING, "/sim/startup/units", false, "meters", 0 },
1159 {"time-offset", true, OPTION_FUNC, "", false, "", fgOptTimeOffset },
1160 {"time-match-real", false, OPTION_STRING, "/sim/startup/time-offset-type", false, "system-offset", 0 },
1161 {"time-match-local", false, OPTION_STRING, "/sim/startup/time-offset-type", false, "latitude-offset", 0 },
1162 {"start-date-sys", true, OPTION_FUNC, "", false, "", fgOptStartDateSys },
1163 {"start-date-lat", true, OPTION_FUNC, "", false, "", fgOptStartDateLat },
1164 {"start-date-gmt", true, OPTION_FUNC, "", false, "", fgOptStartDateGmt },
1165 {"hud-tris", false, OPTION_STRING, "/sim/hud/frame-stat-type", false, "tris", 0 },
1166 {"hud-culled", false, OPTION_STRING, "/sim/hud/frame-stat-type", false, "culled", 0 },
1167 {"atc610x", true, OPTION_CHANNEL, "", false, "dummy", 0 },
1168 {"atlas", true, OPTION_CHANNEL, "", false, "", 0 },
1169 {"httpd", true, OPTION_CHANNEL, "", false, "", 0 },
1170 #ifdef FG_JPEG_SERVER
1171 {"jpg-httpd", true, OPTION_CHANNEL, "", false, "", 0 },
1173 {"native", true, OPTION_CHANNEL, "", false, "", 0 },
1174 {"native-ctrls", true, OPTION_CHANNEL, "", false, "", 0 },
1175 {"native-fdm", true, OPTION_CHANNEL, "", false, "", 0 },
1176 {"native-gui", true, OPTION_CHANNEL, "", false, "", 0 },
1177 {"opengc", true, OPTION_CHANNEL, "", false, "", 0 },
1178 {"garmin", true, OPTION_CHANNEL, "", false, "", 0 },
1179 {"nmea", true, OPTION_CHANNEL, "", false, "", 0 },
1180 {"generic", true, OPTION_CHANNEL, "", false, "", 0 },
1181 {"props", true, OPTION_CHANNEL, "", false, "", 0 },
1182 {"telnet", true, OPTION_CHANNEL, "", false, "", 0 },
1183 {"pve", true, OPTION_CHANNEL, "", false, "", 0 },
1184 {"ray", true, OPTION_CHANNEL, "", false, "", 0 },
1185 {"rul", true, OPTION_CHANNEL, "", false, "", 0 },
1186 {"joyclient", true, OPTION_CHANNEL, "", false, "", 0 },
1187 #ifdef FG_NETWORK_OLK
1188 {"disable-network-olk", false, OPTION_BOOL, "/sim/networking/olk", false, "", 0 },
1189 {"enable-network-olk", false, OPTION_BOOL, "/sim/networking/olk", true, "", 0 },
1190 {"net-hud", false, OPTION_FUNC, "", false, "", fgOptNetHud },
1191 {"net-id", true, OPTION_STRING, "sim/networking/call-sign", false, "", 0 },
1193 #ifdef FG_MPLAYER_AS
1194 {"callsign", true, OPTION_STRING, "sim/multiplay/callsign", false, "", 0 },
1195 {"multiplay", true, OPTION_CHANNEL, "", false, "", 0 },
1197 {"trace-read", true, OPTION_FUNC, "", false, "", fgOptTraceRead },
1198 {"trace-write", true, OPTION_FUNC, "", false, "", fgOptTraceWrite },
1199 {"log-level", true, OPTION_INT, "/sim/log-level", false, "", 0 },
1200 {"view-offset", true, OPTION_FUNC, "", false, "", fgOptViewOffset },
1201 {"visibility", true, OPTION_FUNC, "", false, "", fgOptVisibilityMeters },
1202 {"visibility-miles", true, OPTION_FUNC, "", false, "", fgOptVisibilityMiles },
1203 {"random-wind", false, OPTION_FUNC, "", false, "", fgOptRandomWind },
1204 {"wind", true, OPTION_FUNC, "", false, "", fgOptWind },
1205 {"turbulence", true, OPTION_FUNC, "", false, "", fgOptTurbulence },
1206 {"wp", true, OPTION_FUNC, "", false, "", fgOptWp },
1207 {"flight-plan", true, OPTION_FUNC, "", false, "", fgOptFlightPlan },
1208 {"config", true, OPTION_FUNC, "", false, "", fgOptConfig },
1209 {"aircraft", true, OPTION_STRING, "/sim/aircraft", false, "", 0 },
1214 // Parse a single option
1216 parse_option (const string& arg)
1218 if ( fgOptionMap.size() == 0 ) {
1220 OptionDesc *pt = &fgOptionArray[ 0 ];
1221 while ( pt->option != 0 ) {
1222 fgOptionMap[ pt->option ] = i;
1229 if ( (arg == "--help") || (arg == "-h") ) {
1230 // help/usage request
1231 return(FG_OPTIONS_HELP);
1232 } else if ( (arg == "--verbose") || (arg == "-v") ) {
1233 // verbose help/usage request
1234 return(FG_OPTIONS_VERBOSE_HELP);
1235 } else if ( arg.find( "--show-aircraft") == 0) {
1236 return(FG_OPTIONS_SHOW_AIRCRAFT);
1237 } else if ( arg.find( "--prop:" ) == 0 ) {
1238 string assign = arg.substr(7);
1239 string::size_type pos = assign.find('=');
1240 if ( pos == arg.npos || pos == 0 ) {
1241 SG_LOG( SG_GENERAL, SG_ALERT, "Bad property assignment: " << arg );
1242 return FG_OPTIONS_ERROR;
1244 string name = assign.substr(0, pos);
1245 string value = assign.substr(pos + 1);
1246 fgSetString(name.c_str(), value.c_str());
1247 // SG_LOG(SG_GENERAL, SG_INFO, "Setting default value of property "
1248 // << name << " to \"" << value << '"');
1249 } else if ( arg.find( "--" ) == 0 ) {
1250 size_t pos = arg.find( '=' );
1252 if ( pos == string::npos ) {
1253 arg_name = arg.substr( 2 );
1255 arg_name = arg.substr( 2, pos - 2 );
1257 map<string,size_t>::iterator it = fgOptionMap.find( arg_name );
1258 if ( it != fgOptionMap.end() ) {
1259 OptionDesc *pt = &fgOptionArray[ it->second ];
1260 switch ( pt->type ) {
1262 fgSetBool( pt->property, pt->b_param );
1265 if ( pt->has_param && pos != string::npos ) {
1266 fgSetString( pt->property, arg.substr( pos + 1 ).c_str() );
1267 } else if ( !pt->has_param && pos == string::npos ) {
1268 fgSetString( pt->property, pt->s_param );
1269 } else if ( pt->has_param ) {
1270 SG_LOG( SG_GENERAL, SG_ALERT, "Option '" << arg << "' needs a parameter" );
1271 return FG_OPTIONS_ERROR;
1273 SG_LOG( SG_GENERAL, SG_ALERT, "Option '" << arg << "' does not have a parameter" );
1274 return FG_OPTIONS_ERROR;
1278 if ( pos != string::npos ) {
1279 fgSetDouble( pt->property, atof( arg.substr( pos + 1 ) ) );
1281 SG_LOG( SG_GENERAL, SG_ALERT, "Option '" << arg << "' needs a parameter" );
1282 return FG_OPTIONS_ERROR;
1286 if ( pos != string::npos ) {
1287 fgSetInt( pt->property, atoi( arg.substr( pos + 1 ) ) );
1289 SG_LOG( SG_GENERAL, SG_ALERT, "Option '" << arg << "' needs a parameter" );
1290 return FG_OPTIONS_ERROR;
1293 case OPTION_CHANNEL:
1294 if ( pt->has_param && pos != string::npos ) {
1295 add_channel( pt->option, arg.substr( pos + 1 ) );
1296 } else if ( !pt->has_param && pos == string::npos ) {
1297 add_channel( pt->option, pt->s_param );
1298 } else if ( pt->has_param ) {
1299 SG_LOG( SG_GENERAL, SG_ALERT, "Option '" << arg << "' needs a parameter" );
1300 return FG_OPTIONS_ERROR;
1302 SG_LOG( SG_GENERAL, SG_ALERT, "Option '" << arg << "' does not have a parameter" );
1303 return FG_OPTIONS_ERROR;
1307 if ( pt->has_param && pos != string::npos ) {
1308 return pt->func( arg.substr( pos + 1 ).c_str() );
1309 } else if ( !pt->has_param && pos == string::npos ) {
1310 return pt->func( 0 );
1311 } else if ( pt->has_param ) {
1312 SG_LOG( SG_GENERAL, SG_ALERT, "Option '" << arg << "' needs a parameter" );
1313 return FG_OPTIONS_ERROR;
1315 SG_LOG( SG_GENERAL, SG_ALERT, "Option '" << arg << "' does not have a parameter" );
1316 return FG_OPTIONS_ERROR;
1321 SG_LOG( SG_GENERAL, SG_ALERT, "Unknown option '" << arg << "'" );
1322 return FG_OPTIONS_ERROR;
1325 SG_LOG( SG_GENERAL, SG_ALERT, "Unknown option '" << arg << "'" );
1326 return FG_OPTIONS_ERROR;
1329 return FG_OPTIONS_OK;
1333 // Parse the command line options
1335 fgParseArgs (int argc, char **argv)
1337 bool in_options = true;
1338 bool verbose = false;
1341 SG_LOG(SG_GENERAL, SG_INFO, "Processing command line arguments");
1343 for (int i = 1; i < argc; i++) {
1344 string arg = argv[i];
1346 if (in_options && (arg.find('-') == 0)) {
1350 int result = parse_option(arg);
1351 if ((result == FG_OPTIONS_HELP) || (result == FG_OPTIONS_ERROR))
1354 else if (result == FG_OPTIONS_VERBOSE_HELP)
1357 else if (result == FG_OPTIONS_SHOW_AIRCRAFT) {
1364 SG_LOG(SG_GENERAL, SG_INFO,
1365 "Reading command-line property file " << arg);
1366 readProperties(arg, globals->get_props());
1375 SG_LOG(SG_GENERAL, SG_INFO, "Finished command line arguments");
1379 // Parse config file options
1381 fgParseOptions (const string& path) {
1382 sg_gzifstream in( path );
1383 if ( !in.is_open() ) {
1387 SG_LOG( SG_GENERAL, SG_INFO, "Processing config file: " << path );
1391 while ( ! in.eof() ) {
1394 while ( in.get(c) && c != '\0' ) {
1399 #if defined( macintosh )
1400 getline( in, line, '\r' );
1402 getline( in, line, '\n' );
1405 // catch extraneous (DOS) line ending character
1406 if ( line[line.length() - 1] < 32 ) {
1407 line = line.substr( 0, line.length()-1 );
1410 if ( parse_option( line ) == FG_OPTIONS_ERROR ) {
1411 cerr << endl << "Config file parse error: " << path << " '"
1412 << line << "'" << endl;
1421 // Print usage message
1423 fgUsage (bool verbose)
1425 SGPropertyNode *locale = globals->get_locale();
1427 SGPropertyNode options_root;
1432 fgLoadProps("options.xml", &options_root);
1433 } catch (const sg_exception &ex) {
1434 cout << "Unable to read the help file." << endl;
1435 cout << "Make sure the file options.xml is located in the FlightGear base directory," << endl;
1436 cout << "and the location of the base directory is specified by setting $FG_ROOT or" << endl;
1437 cout << "by adding --fg-root=path as a program argument." << endl;
1442 SGPropertyNode *options = options_root.getNode("options");
1444 SG_LOG( SG_GENERAL, SG_ALERT,
1445 "Error reading options.xml: <options> directive not found." );
1449 SGPropertyNode *usage = locale->getNode(options->getStringValue("usage"));
1451 cout << "Usage: " << usage->getStringValue() << endl;
1454 vector<SGPropertyNode_ptr>section = options->getChildren("section");
1455 for (unsigned int j = 0; j < section.size(); j++) {
1458 vector<SGPropertyNode_ptr>option = section[j]->getChildren("option");
1459 for (unsigned int k = 0; k < option.size(); k++) {
1461 SGPropertyNode *name = option[k]->getNode("name");
1462 SGPropertyNode *short_name = option[k]->getNode("short");
1463 SGPropertyNode *key = option[k]->getNode("key");
1464 SGPropertyNode *arg = option[k]->getNode("arg");
1465 bool brief = option[k]->getNode("brief");
1467 if ((brief || verbose) && name) {
1468 string tmp = name->getStringValue();
1472 tmp.append(key->getStringValue());
1476 tmp.append(arg->getStringValue());
1480 tmp.append(short_name->getStringValue());
1484 if (tmp.size() <= 25) {
1485 snprintf(cstr, 96, " --%-27s", tmp.c_str());
1487 snprintf(cstr, 96, "\n --%s\n%32c", tmp.c_str(), ' ');
1490 // There may be more than one <description> tag assosiated
1494 vector<SGPropertyNode_ptr>desc =
1495 option[k]->getChildren("description");
1497 if (desc.size() > 0) {
1498 for ( unsigned int l = 0; l < desc.size(); l++) {
1500 // There may be more than one translation line.
1502 string t = desc[l]->getStringValue();
1503 SGPropertyNode *n = locale->getNode("strings");
1504 vector<SGPropertyNode_ptr>trans_desc =
1505 n->getChildren(t.substr(8).c_str());
1507 for ( unsigned int m = 0; m < trans_desc.size(); m++ ) {
1508 string t_str = trans_desc[m]->getStringValue();
1510 if ((m > 0) || ((l > 0) && m == 0)) {
1511 snprintf(cstr, 96, "%32c", ' ');
1516 // If the string is too large to fit on the screen,
1517 // then split it up in several pieces.
1519 while ( t_str.size() > 47 ) {
1521 unsigned int m = t_str.rfind(' ', 47);
1522 msg += t_str.substr(0, m);
1523 snprintf(cstr, 96, "\n%32c", ' ');
1526 t_str.erase(t_str.begin(), t_str.begin() + m + 1);
1528 msg += t_str + '\n';
1535 SGPropertyNode *name =
1536 locale->getNode(section[j]->getStringValue("name"));
1538 if (!msg.empty() && name) {
1539 cout << endl << name->getStringValue() << ":" << endl;
1547 cout << "For a complete list of options use --help --verbose" << endl;
1551 // Show available aircraft types
1552 void fgShowAircraft(void) {
1553 vector<string> aircraft;
1555 SGPath path( globals->get_fg_root() );
1556 path.append("Aircraft");
1561 dirp = ulOpenDir(path.c_str());
1563 cerr << "Unable to open aircraft directory." << endl;
1567 while ((dire = ulReadDir(dirp)) != NULL) {
1570 if ((ptr = strstr(dire->d_name, "-set.xml")) && ptr[8] == '\0' ) {
1571 SGPath afile = path;
1572 afile.append(dire->d_name);
1576 SGPropertyNode root;
1578 readProperties(afile.str(), &root);
1583 SGPropertyNode *desc = NULL;
1584 SGPropertyNode *node = root.getNode("sim");
1586 desc = node->getNode("description");
1590 if (strlen(dire->d_name) <= 27)
1591 snprintf(cstr, 96, " %-27s %s", dire->d_name,
1592 (desc) ? desc->getStringValue() : "" );
1595 snprintf(cstr, 96, " %-27s\n%32c%s", dire->d_name, ' ',
1596 (desc) ? desc->getStringValue() : "" );
1598 aircraft.push_back(cstr);
1602 sort(aircraft.begin(), aircraft.end());
1603 cout << "Available aircraft:" << endl;
1604 for ( unsigned int i = 0; i < aircraft.size(); i++ ) {
1605 cout << aircraft[i] << endl;