2 * viking -- GPS Data and Topo Analyzer, Explorer, and Manager
4 * Copyright (C) 2003-2005, Evan Battaglia <gtoevan@gmx.net>
5 * Copyright (C) 2012, Rob Norris <rw_norris@hotmail.com>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
45 static void a_gpspoint_write_track ( const gpointer id, const VikTrack *t, FILE *f );
46 static void a_gpspoint_write_trackpoint ( VikTrackpoint *tp, TP_write_info_type *write_info );
47 static void a_gpspoint_write_waypoint ( const gpointer id, const VikWaypoint *wp, FILE *f );
50 /* outline for file gpspoint.c
55 get first tag, if not type, skip it.
56 if type, record type. if waypoint list, etc move on. if track, make a new track, make it current track, add it, etc.
57 if waypoint, read on and store to the waypoint.
58 if trackpoint, make trackpoint, store to current track (error / skip if none)
62 /* Thanks to etrex-cache's gpsbabel's gpspoint.c for starting me off! */
64 static char line_buffer[2048];
66 #define GPSPOINT_TYPE_NONE 0
67 #define GPSPOINT_TYPE_WAYPOINT 1
68 #define GPSPOINT_TYPE_TRACKPOINT 2
69 #define GPSPOINT_TYPE_ROUTEPOINT 3
70 #define GPSPOINT_TYPE_TRACK 4
71 #define GPSPOINT_TYPE_ROUTE 5
73 static VikTrack *current_track; /* pointer to pointer to first GList */
75 static gint line_type = GPSPOINT_TYPE_NONE;
76 static struct LatLon line_latlon;
77 static gchar *line_name;
78 static gchar *line_comment;
79 static gchar *line_description;
80 static gchar *line_image;
81 static gchar *line_symbol;
82 static gboolean line_newsegment = FALSE;
83 static gboolean line_has_timestamp = FALSE;
84 static time_t line_timestamp = 0;
85 static gdouble line_altitude = VIK_DEFAULT_ALTITUDE;
86 static gboolean line_visible = TRUE;
88 static gboolean line_extended = FALSE;
89 static gdouble line_speed = NAN;
90 static gdouble line_course = NAN;
91 static gint line_sat = 0;
92 static gint line_fix = 0;
93 /* other possible properties go here */
96 static void gpspoint_process_tag ( const gchar *tag, gint len );
97 static void gpspoint_process_key_and_value ( const gchar *key, gint key_len, const gchar *value, gint value_len );
99 static gchar *slashdup(const gchar *str)
101 guint16 len = strlen(str);
102 guint16 need_bs_count, i, j;
104 for ( i = 0, need_bs_count = 0; i < len; i++ )
105 if ( str[i] == '\\' || str[i] == '"' )
107 rv = g_malloc ( (len+need_bs_count+1) * sizeof(gchar) );
108 for ( i = 0, j = 0; i < len; i++, j++ )
110 if ( str[i] == '\\' || str[i] == '"' )
118 static gchar *deslashndup ( const gchar *str, guint16 len )
120 guint16 i,j, bs_count, new_len;
121 gboolean backslash = FALSE;
127 for ( i = 0, bs_count = 0; i < len; i++ )
128 if ( str[i] == '\\' )
134 if ( str[i-1] == '\\' && (len == 1 || str[i-2] != '\\') )
137 new_len = len - bs_count;
138 rv = g_malloc ( (new_len+1) * sizeof(gchar) );
139 for ( i = 0, j = 0; i < len && j < new_len; i++ )
140 if ( str[i] == '\\' && !backslash )
153 * Returns whether file read was a success
154 * No obvious way to test for a 'gpspoint' file,
155 * thus set a flag if any actual tag found during processing of the file
157 gboolean a_gpspoint_read_file(VikTrwLayer *trw, FILE *f ) {
158 VikCoordMode coord_mode = vik_trw_layer_get_coord_mode ( trw );
159 gchar *tag_start, *tag_end;
160 g_assert ( f != NULL && trw != NULL );
163 line_newsegment = FALSE;
166 current_track = NULL;
167 gboolean have_read_something = FALSE;
169 while (fgets(line_buffer, 2048, f))
171 gboolean inside_quote = 0;
172 gboolean backslash = 0;
174 line_buffer[strlen(line_buffer)-1] = '\0'; /* chop off newline */
176 /* for gpspoint files wrapped inside */
177 if ( strlen(line_buffer) >= 13 && strncmp ( line_buffer, "~EndLayerData", 13 ) == 0 ) {
178 // Even just a blank TRW is ok when in a .vik file
179 have_read_something = TRUE;
183 /* each line: nullify stuff, make thing if nes, free name if ness */
184 tag_start = line_buffer;
187 /* my addition: find first non-whitespace character. if the null, skip line. */
188 while (*tag_start != '\0' && isspace(*tag_start))
190 if (tag_start == '\0')
193 if (*tag_start == '#')
198 inside_quote = !inside_quote;
199 while (*tag_end != '\0' && (!isspace(*tag_end) || inside_quote)) {
201 if (*tag_end == '\\' && !backslash)
205 else if (*tag_end == '"')
206 inside_quote = !inside_quote;
209 gpspoint_process_tag ( tag_start, tag_end - tag_start );
211 if (*tag_end == '\0' )
214 tag_start = tag_end+1;
216 if (line_type == GPSPOINT_TYPE_WAYPOINT && line_name)
218 have_read_something = TRUE;
219 VikWaypoint *wp = vik_waypoint_new();
220 wp->visible = line_visible;
221 wp->altitude = line_altitude;
223 vik_coord_load_from_latlon ( &(wp->coord), coord_mode, &line_latlon );
225 vik_trw_layer_filein_add_waypoint ( trw, line_name, wp );
226 g_free ( line_name );
231 vik_waypoint_set_comment ( wp, line_comment );
235 if ( line_description )
237 vik_waypoint_set_description ( wp, line_description );
238 line_description = NULL;
243 vik_waypoint_set_image ( wp, line_image );
249 vik_waypoint_set_symbol ( wp, line_symbol );
253 else if ((line_type == GPSPOINT_TYPE_TRACK || line_type == GPSPOINT_TYPE_ROUTE) && line_name)
255 have_read_something = TRUE;
256 VikTrack *pl = vik_track_new();
258 /* Thanks to Peter Jones for this Fix */
259 if (!line_name) line_name = g_strdup("UNK");
261 pl->visible = line_visible;
262 pl->is_route = (line_type == GPSPOINT_TYPE_ROUTE);
266 vik_track_set_comment ( pl, line_comment );
270 if ( line_description )
272 vik_track_set_description ( pl, line_description );
273 line_description = NULL;
276 pl->trackpoints = NULL;
277 vik_trw_layer_filein_add_track ( trw, line_name, pl );
278 g_free ( line_name );
283 else if ((line_type == GPSPOINT_TYPE_TRACKPOINT || line_type == GPSPOINT_TYPE_ROUTEPOINT) && current_track)
285 have_read_something = TRUE;
286 VikTrackpoint *tp = vik_trackpoint_new();
287 vik_coord_load_from_latlon ( &(tp->coord), coord_mode, &line_latlon );
288 tp->newsegment = line_newsegment;
289 tp->has_timestamp = line_has_timestamp;
290 tp->timestamp = line_timestamp;
291 tp->altitude = line_altitude;
293 tp->speed = line_speed;
294 tp->course = line_course;
295 tp->nsats = line_sat;
296 tp->fix_mode = line_fix;
298 current_track->trackpoints = g_list_append ( current_track->trackpoints, tp );
302 g_free ( line_name );
305 g_free ( line_comment );
306 if (line_description)
307 g_free ( line_description );
309 g_free ( line_image );
311 g_free ( line_symbol );
313 line_description = NULL;
316 line_type = GPSPOINT_TYPE_NONE;
317 line_newsegment = FALSE;
318 line_has_timestamp = FALSE;
320 line_altitude = VIK_DEFAULT_ALTITUDE;
324 line_extended = FALSE;
331 return have_read_something;
334 /* Tag will be of a few defined forms:
340 So we must determine end of tag name, start of value, end of value.
342 static void gpspoint_process_tag ( const gchar *tag, gint len )
344 const gchar *key_end, *value_start, *value_end;
346 /* Searching for key end */
349 while (++key_end - tag < len)
353 if (key_end - tag == len)
354 return; /* no good */
356 if (key_end - tag == len + 1)
357 value_start = value_end = 0; /* size = 0 */
360 value_start = key_end + 1; /* equal_sign plus one */
362 if (*value_start == '"')
365 if (*value_start == '"')
366 value_start = value_end = 0; /* size = 0 */
369 if (*(tag+len-1) == '"')
370 value_end = tag + len - 1;
376 value_end = tag + len; /* value start really IS value start. */
378 gpspoint_process_key_and_value(tag, key_end - tag, value_start, value_end - value_start);
383 value = NULL for none
385 static void gpspoint_process_key_and_value ( const gchar *key, gint key_len, const gchar *value, gint value_len )
387 if (key_len == 4 && strncasecmp( key, "type", key_len ) == 0 )
390 line_type = GPSPOINT_TYPE_NONE;
391 else if (value_len == 5 && strncasecmp( value, "track", value_len ) == 0 )
392 line_type = GPSPOINT_TYPE_TRACK;
393 else if (value_len == 10 && strncasecmp( value, "trackpoint", value_len ) == 0 )
394 line_type = GPSPOINT_TYPE_TRACKPOINT;
395 else if (value_len == 8 && strncasecmp( value, "waypoint", value_len ) == 0 )
396 line_type = GPSPOINT_TYPE_WAYPOINT;
397 else if (value_len == 5 && strncasecmp( value, "route", value_len ) == 0 )
398 line_type = GPSPOINT_TYPE_ROUTE;
399 else if (value_len == 10 && strncasecmp( value, "routepoint", value_len ) == 0 )
400 line_type = GPSPOINT_TYPE_ROUTEPOINT;
402 /* all others are ignored */
403 line_type = GPSPOINT_TYPE_NONE;
405 else if (key_len == 4 && strncasecmp( key, "name", key_len ) == 0 && value != NULL)
407 if (line_name == NULL)
409 line_name = g_strndup ( value, value_len );
412 else if (key_len == 7 && strncasecmp( key, "comment", key_len ) == 0 && value != NULL)
414 if (line_comment == NULL)
415 line_comment = deslashndup ( value, value_len );
417 else if (key_len == 11 && strncasecmp( key, "description", key_len ) == 0 && value != NULL)
419 if (line_description == NULL)
420 line_description = deslashndup ( value, value_len );
422 else if (key_len == 5 && strncasecmp( key, "image", key_len ) == 0 && value != NULL)
424 if (line_image == NULL)
425 line_image = deslashndup ( value, value_len );
427 else if (key_len == 8 && strncasecmp( key, "latitude", key_len ) == 0 && value != NULL)
429 line_latlon.lat = g_ascii_strtod(value, NULL);
431 else if (key_len == 9 && strncasecmp( key, "longitude", key_len ) == 0 && value != NULL)
433 line_latlon.lon = g_ascii_strtod(value, NULL);
435 else if (key_len == 8 && strncasecmp( key, "altitude", key_len ) == 0 && value != NULL)
437 line_altitude = g_ascii_strtod(value, NULL);
439 else if (key_len == 7 && strncasecmp( key, "visible", key_len ) == 0 && value[0] != 'y' && value[0] != 'Y' && value[0] != 't' && value[0] != 'T')
441 line_visible = FALSE;
443 else if (key_len == 6 && strncasecmp( key, "symbol", key_len ) == 0 && value != NULL)
445 line_symbol = g_strndup ( value, value_len );
447 else if (key_len == 8 && strncasecmp( key, "unixtime", key_len ) == 0 && value != NULL)
449 line_timestamp = g_ascii_strtod(value, NULL);
450 if ( line_timestamp != 0x80000000 )
451 line_has_timestamp = TRUE;
453 else if (key_len == 10 && strncasecmp( key, "newsegment", key_len ) == 0 && value != NULL)
455 line_newsegment = TRUE;
457 else if (key_len == 8 && strncasecmp( key, "extended", key_len ) == 0 && value != NULL)
459 line_extended = TRUE;
461 else if (key_len == 5 && strncasecmp( key, "speed", key_len ) == 0 && value != NULL)
463 line_speed = g_ascii_strtod(value, NULL);
465 else if (key_len == 6 && strncasecmp( key, "course", key_len ) == 0 && value != NULL)
467 line_course = g_ascii_strtod(value, NULL);
469 else if (key_len == 3 && strncasecmp( key, "sat", key_len ) == 0 && value != NULL)
471 line_sat = atoi(value);
473 else if (key_len == 3 && strncasecmp( key, "fix", key_len ) == 0 && value != NULL)
475 line_fix = atoi(value);
479 static void a_gpspoint_write_waypoint ( const gpointer id, const VikWaypoint *wp, FILE *f )
481 static struct LatLon ll;
482 gchar *s_lat, *s_lon;
484 if ( wp && !(wp->name) ) {
487 vik_coord_to_latlon ( &(wp->coord), &ll );
488 s_lat = a_coords_dtostr(ll.lat);
489 s_lon = a_coords_dtostr(ll.lon);
490 fprintf ( f, "type=\"waypoint\" latitude=\"%s\" longitude=\"%s\" name=\"%s\"", s_lat, s_lon, wp->name );
494 if ( wp->altitude != VIK_DEFAULT_ALTITUDE ) {
495 gchar *s_alt = a_coords_dtostr(wp->altitude);
496 fprintf ( f, " altitude=\"%s\"", s_alt );
501 gchar *tmp_comment = slashdup(wp->comment);
502 fprintf ( f, " comment=\"%s\"", tmp_comment );
503 g_free ( tmp_comment );
505 if ( wp->description )
507 gchar *tmp_description = slashdup(wp->description);
508 fprintf ( f, " description=\"%s\"", tmp_description );
509 g_free ( tmp_description );
513 gchar *tmp_image = slashdup(wp->image);
514 fprintf ( f, " image=\"%s\"", tmp_image );
515 g_free ( tmp_image );
519 fprintf ( f, " symbol=\"%s\"", wp->symbol );
522 fprintf ( f, " visible=\"n\"" );
526 static void a_gpspoint_write_trackpoint ( VikTrackpoint *tp, TP_write_info_type *write_info )
528 static struct LatLon ll;
529 gchar *s_lat, *s_lon;
530 vik_coord_to_latlon ( &(tp->coord), &ll );
532 FILE *f = write_info->f;
534 /* TODO: modify a_coords_dtostr() to accept (optional) buffer
535 * instead of doing malloc/free everytime */
536 s_lat = a_coords_dtostr(ll.lat);
537 s_lon = a_coords_dtostr(ll.lon);
538 fprintf ( f, "type=\"%spoint\" latitude=\"%s\" longitude=\"%s\"", write_info->is_route ? "route" : "track", s_lat, s_lon );
542 if ( tp->altitude != VIK_DEFAULT_ALTITUDE ) {
543 gchar *s_alt = a_coords_dtostr(tp->altitude);
544 fprintf ( f, " altitude=\"%s\"", s_alt );
547 if ( tp->has_timestamp )
548 fprintf ( f, " unixtime=\"%ld\"", tp->timestamp );
549 if ( tp->newsegment )
550 fprintf ( f, " newsegment=\"yes\"" );
552 if (!isnan(tp->speed) || !isnan(tp->course) || tp->nsats > 0) {
553 fprintf ( f, " extended=\"yes\"" );
554 if (!isnan(tp->speed)) {
555 gchar *s_speed = a_coords_dtostr(tp->speed);
556 fprintf ( f, " speed=\"%s\"", s_speed );
559 if (!isnan(tp->course)) {
560 gchar *s_course = a_coords_dtostr(tp->course);
561 fprintf ( f, " course=\"%s\"", s_course );
565 fprintf ( f, " sat=\"%d\"", tp->nsats );
566 if (tp->fix_mode > 0)
567 fprintf ( f, " fix=\"%d\"", tp->fix_mode );
573 static void a_gpspoint_write_track ( const gpointer id, const VikTrack *trk, FILE *f )
581 fprintf ( f, "type=\"%s\" name=\"%s\"", trk->is_route ? "route" : "track", trk->name);
583 if ( trk->comment ) {
584 gchar *tmp = slashdup(trk->comment);
585 fprintf ( f, " comment=\"%s\"", tmp );
589 if ( trk->description ) {
590 gchar *tmp = slashdup(trk->description);
591 fprintf ( f, " description=\"%s\"", tmp );
595 if ( ! trk->visible ) {
596 fprintf ( f, " visible=\"n\"" );
600 TP_write_info_type tp_write_info = { f, trk->is_route };
601 g_list_foreach ( trk->trackpoints, (GFunc) a_gpspoint_write_trackpoint, &tp_write_info );
602 fprintf ( f, "type=\"%send\"\n", trk->is_route ? "route" : "track" );
605 void a_gpspoint_write_file ( VikTrwLayer *trw, FILE *f )
607 GHashTable *tracks = vik_trw_layer_get_tracks ( trw );
608 GHashTable *routes = vik_trw_layer_get_routes ( trw );
609 GHashTable *waypoints = vik_trw_layer_get_waypoints ( trw );
611 fprintf ( f, "type=\"waypointlist\"\n" );
612 g_hash_table_foreach ( waypoints, (GHFunc) a_gpspoint_write_waypoint, f );
613 fprintf ( f, "type=\"waypointlistend\"\n" );
614 g_hash_table_foreach ( tracks, (GHFunc) a_gpspoint_write_track, f );
615 g_hash_table_foreach ( routes, (GHFunc) a_gpspoint_write_track, f );