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
41 static void a_gpspoint_write_track ( const gpointer id, const VikTrack *t, FILE *f );
42 static void a_gpspoint_write_trackpoint ( VikTrackpoint *tp, FILE *f );
43 static void a_gpspoint_write_waypoint ( const gpointer id, const VikWaypoint *wp, FILE *f );
46 /* outline for file gpspoint.c
51 get first tag, if not type, skip it.
52 if type, record type. if waypoint list, etc move on. if track, make a new track, make it current track, add it, etc.
53 if waypoint, read on and store to the waypoint.
54 if trackpoint, make trackpoint, store to current track (error / skip if none)
58 /* Thanks to etrex-cache's gpsbabel's gpspoint.c for starting me off! */
60 static char line_buffer[2048];
62 #define GPSPOINT_TYPE_NONE 0
63 #define GPSPOINT_TYPE_WAYPOINT 1
64 #define GPSPOINT_TYPE_TRACKPOINT 2
65 /* #define GPSPOINT_TYPE_ROUTEPOINT 3 */
66 #define GPSPOINT_TYPE_TRACK 4
68 /* #define GPSPOINT_TYPE_ROUTE 5 */
70 static VikTrack *current_track; /* pointer to pointer to first GList */
72 static gint line_type = GPSPOINT_TYPE_NONE;
73 static struct LatLon line_latlon;
74 static gchar *line_name;
75 static gchar *line_comment;
76 static gchar *line_description;
77 static gchar *line_image;
78 static gchar *line_symbol;
79 static gboolean line_newsegment = FALSE;
80 static gboolean line_has_timestamp = FALSE;
81 static time_t line_timestamp = 0;
82 static gdouble line_altitude = VIK_DEFAULT_ALTITUDE;
83 static gboolean line_visible = TRUE;
85 static gboolean line_extended = FALSE;
86 static gdouble line_speed = NAN;
87 static gdouble line_course = NAN;
88 static gint line_sat = 0;
89 static gint line_fix = 0;
90 /* other possible properties go here */
93 static void gpspoint_process_tag ( const gchar *tag, gint len );
94 static void gpspoint_process_key_and_value ( const gchar *key, gint key_len, const gchar *value, gint value_len );
96 static gchar *slashdup(const gchar *str)
98 guint16 len = strlen(str);
99 guint16 need_bs_count, i, j;
101 for ( i = 0, need_bs_count = 0; i < len; i++ )
102 if ( str[i] == '\\' || str[i] == '"' )
104 rv = g_malloc ( (len+need_bs_count+1) * sizeof(gchar) );
105 for ( i = 0, j = 0; i < len; i++, j++ )
107 if ( str[i] == '\\' || str[i] == '"' )
115 static gchar *deslashndup ( const gchar *str, guint16 len )
117 guint16 i,j, bs_count, new_len;
118 gboolean backslash = FALSE;
124 for ( i = 0, bs_count = 0; i < len; i++ )
125 if ( str[i] == '\\' )
131 if ( str[i-1] == '\\' && (len == 1 || str[i-2] != '\\') )
134 new_len = len - bs_count;
135 rv = g_malloc ( (new_len+1) * sizeof(gchar) );
136 for ( i = 0, j = 0; i < len && j < new_len; i++ )
137 if ( str[i] == '\\' && !backslash )
150 * Returns whether file read was a success
151 * No obvious way to test for a 'gpspoint' file,
152 * thus set a flag if any actual tag found during processing of the file
154 gboolean a_gpspoint_read_file(VikTrwLayer *trw, FILE *f ) {
155 VikCoordMode coord_mode = vik_trw_layer_get_coord_mode ( trw );
156 gchar *tag_start, *tag_end;
157 g_assert ( f != NULL && trw != NULL );
160 line_newsegment = FALSE;
163 current_track = NULL;
164 gboolean have_read_something = FALSE;
166 while (fgets(line_buffer, 2048, f))
168 gboolean inside_quote = 0;
169 gboolean backslash = 0;
171 line_buffer[strlen(line_buffer)-1] = '\0'; /* chop off newline */
173 /* for gpspoint files wrapped inside */
174 if ( strlen(line_buffer) >= 13 && strncmp ( line_buffer, "~EndLayerData", 13 ) == 0 ) {
175 // Even just a blank TRW is ok when in a .vik file
176 have_read_something = TRUE;
180 /* each line: nullify stuff, make thing if nes, free name if ness */
181 tag_start = line_buffer;
184 /* my addition: find first non-whitespace character. if the null, skip line. */
185 while (*tag_start != '\0' && isspace(*tag_start))
187 if (tag_start == '\0')
190 if (*tag_start == '#')
195 inside_quote = !inside_quote;
196 while (*tag_end != '\0' && (!isspace(*tag_end) || inside_quote)) {
198 if (*tag_end == '\\' && !backslash)
202 else if (*tag_end == '"')
203 inside_quote = !inside_quote;
206 gpspoint_process_tag ( tag_start, tag_end - tag_start );
208 if (*tag_end == '\0' )
211 tag_start = tag_end+1;
213 if (line_type == GPSPOINT_TYPE_WAYPOINT && line_name)
215 have_read_something = TRUE;
216 VikWaypoint *wp = vik_waypoint_new();
217 wp->visible = line_visible;
218 wp->altitude = line_altitude;
220 vik_coord_load_from_latlon ( &(wp->coord), coord_mode, &line_latlon );
222 vik_trw_layer_filein_add_waypoint ( trw, line_name, wp );
223 g_free ( line_name );
228 vik_waypoint_set_comment ( wp, line_comment );
232 if ( line_description )
234 vik_waypoint_set_description ( wp, line_description );
235 line_description = NULL;
240 vik_waypoint_set_image ( wp, line_image );
246 vik_waypoint_set_symbol ( wp, line_symbol );
250 else if (line_type == GPSPOINT_TYPE_TRACK && line_name)
252 have_read_something = TRUE;
253 VikTrack *pl = vik_track_new();
255 /* Thanks to Peter Jones for this Fix */
256 if (!line_name) line_name = g_strdup("UNK");
258 pl->visible = line_visible;
262 vik_track_set_comment ( pl, line_comment );
266 if ( line_description )
268 vik_track_set_description ( pl, line_description );
269 line_description = NULL;
272 pl->trackpoints = NULL;
273 vik_trw_layer_filein_add_track ( trw, line_name, pl );
274 g_free ( line_name );
279 else if (line_type == GPSPOINT_TYPE_TRACKPOINT && current_track)
281 have_read_something = TRUE;
282 VikTrackpoint *tp = vik_trackpoint_new();
283 vik_coord_load_from_latlon ( &(tp->coord), coord_mode, &line_latlon );
284 tp->newsegment = line_newsegment;
285 tp->has_timestamp = line_has_timestamp;
286 tp->timestamp = line_timestamp;
287 tp->altitude = line_altitude;
289 tp->speed = line_speed;
290 tp->course = line_course;
291 tp->nsats = line_sat;
292 tp->fix_mode = line_fix;
294 current_track->trackpoints = g_list_append ( current_track->trackpoints, tp );
298 g_free ( line_name );
301 g_free ( line_comment );
302 if (line_description)
303 g_free ( line_description );
305 g_free ( line_image );
307 g_free ( line_symbol );
309 line_description = NULL;
312 line_type = GPSPOINT_TYPE_NONE;
313 line_newsegment = FALSE;
314 line_has_timestamp = FALSE;
316 line_altitude = VIK_DEFAULT_ALTITUDE;
320 line_extended = FALSE;
327 return have_read_something;
330 /* Tag will be of a few defined forms:
336 So we must determine end of tag name, start of value, end of value.
338 static void gpspoint_process_tag ( const gchar *tag, gint len )
340 const gchar *key_end, *value_start, *value_end;
342 /* Searching for key end */
345 while (++key_end - tag < len)
349 if (key_end - tag == len)
350 return; /* no good */
352 if (key_end - tag == len + 1)
353 value_start = value_end = 0; /* size = 0 */
356 value_start = key_end + 1; /* equal_sign plus one */
358 if (*value_start == '"')
361 if (*value_start == '"')
362 value_start = value_end = 0; /* size = 0 */
365 if (*(tag+len-1) == '"')
366 value_end = tag + len - 1;
372 value_end = tag + len; /* value start really IS value start. */
374 gpspoint_process_key_and_value(tag, key_end - tag, value_start, value_end - value_start);
379 value = NULL for none
381 static void gpspoint_process_key_and_value ( const gchar *key, gint key_len, const gchar *value, gint value_len )
383 if (key_len == 4 && strncasecmp( key, "type", key_len ) == 0 )
386 line_type = GPSPOINT_TYPE_NONE;
387 else if (value_len == 5 && strncasecmp( value, "track", value_len ) == 0 )
388 line_type = GPSPOINT_TYPE_TRACK;
389 else if (value_len == 10 && strncasecmp( value, "trackpoint", value_len ) == 0 )
390 line_type = GPSPOINT_TYPE_TRACKPOINT;
391 else if (value_len == 8 && strncasecmp( value, "waypoint", value_len ) == 0 )
392 line_type = GPSPOINT_TYPE_WAYPOINT;
394 /* all others are ignored */
395 line_type = GPSPOINT_TYPE_NONE;
397 else if (key_len == 4 && strncasecmp( key, "name", key_len ) == 0 && value != NULL)
399 if (line_name == NULL)
401 line_name = g_strndup ( value, value_len );
404 else if (key_len == 7 && strncasecmp( key, "comment", key_len ) == 0 && value != NULL)
406 if (line_comment == NULL)
407 line_comment = deslashndup ( value, value_len );
409 else if (key_len == 11 && strncasecmp( key, "description", key_len ) == 0 && value != NULL)
411 if (line_description == NULL)
412 line_description = deslashndup ( value, value_len );
414 else if (key_len == 5 && strncasecmp( key, "image", key_len ) == 0 && value != NULL)
416 if (line_image == NULL)
417 line_image = deslashndup ( value, value_len );
419 else if (key_len == 8 && strncasecmp( key, "latitude", key_len ) == 0 && value != NULL)
421 line_latlon.lat = g_ascii_strtod(value, NULL);
423 else if (key_len == 9 && strncasecmp( key, "longitude", key_len ) == 0 && value != NULL)
425 line_latlon.lon = g_ascii_strtod(value, NULL);
427 else if (key_len == 8 && strncasecmp( key, "altitude", key_len ) == 0 && value != NULL)
429 line_altitude = g_ascii_strtod(value, NULL);
431 else if (key_len == 7 && strncasecmp( key, "visible", key_len ) == 0 && value[0] != 'y' && value[0] != 'Y' && value[0] != 't' && value[0] != 'T')
433 line_visible = FALSE;
435 else if (key_len == 6 && strncasecmp( key, "symbol", key_len ) == 0 && value != NULL)
437 line_symbol = g_strndup ( value, value_len );
439 else if (key_len == 8 && strncasecmp( key, "unixtime", key_len ) == 0 && value != NULL)
441 line_timestamp = g_ascii_strtod(value, NULL);
442 if ( line_timestamp != 0x80000000 )
443 line_has_timestamp = TRUE;
445 else if (key_len == 10 && strncasecmp( key, "newsegment", key_len ) == 0 && value != NULL)
447 line_newsegment = TRUE;
449 else if (key_len == 8 && strncasecmp( key, "extended", key_len ) == 0 && value != NULL)
451 line_extended = TRUE;
453 else if (key_len == 5 && strncasecmp( key, "speed", key_len ) == 0 && value != NULL)
455 line_speed = g_ascii_strtod(value, NULL);
457 else if (key_len == 6 && strncasecmp( key, "course", key_len ) == 0 && value != NULL)
459 line_course = g_ascii_strtod(value, NULL);
461 else if (key_len == 3 && strncasecmp( key, "sat", key_len ) == 0 && value != NULL)
463 line_sat = atoi(value);
465 else if (key_len == 3 && strncasecmp( key, "fix", key_len ) == 0 && value != NULL)
467 line_fix = atoi(value);
471 static void a_gpspoint_write_waypoint ( const gpointer id, const VikWaypoint *wp, FILE *f )
473 static struct LatLon ll;
474 gchar *s_lat, *s_lon;
476 if ( wp && !(wp->name) ) {
479 vik_coord_to_latlon ( &(wp->coord), &ll );
480 s_lat = a_coords_dtostr(ll.lat);
481 s_lon = a_coords_dtostr(ll.lon);
482 fprintf ( f, "type=\"waypoint\" latitude=\"%s\" longitude=\"%s\" name=\"%s\"", s_lat, s_lon, wp->name );
486 if ( wp->altitude != VIK_DEFAULT_ALTITUDE ) {
487 gchar *s_alt = a_coords_dtostr(wp->altitude);
488 fprintf ( f, " altitude=\"%s\"", s_alt );
493 gchar *tmp_comment = slashdup(wp->comment);
494 fprintf ( f, " comment=\"%s\"", tmp_comment );
495 g_free ( tmp_comment );
497 if ( wp->description )
499 gchar *tmp_description = slashdup(wp->description);
500 fprintf ( f, " description=\"%s\"", tmp_description );
501 g_free ( tmp_description );
505 gchar *tmp_image = slashdup(wp->image);
506 fprintf ( f, " image=\"%s\"", tmp_image );
507 g_free ( tmp_image );
511 fprintf ( f, " symbol=\"%s\"", wp->symbol );
514 fprintf ( f, " visible=\"n\"" );
518 static void a_gpspoint_write_trackpoint ( VikTrackpoint *tp, FILE *f )
520 static struct LatLon ll;
521 gchar *s_lat, *s_lon;
522 vik_coord_to_latlon ( &(tp->coord), &ll );
524 /* TODO: modify a_coords_dtostr() to accept (optional) buffer
525 * instead of doing malloc/free everytime */
526 s_lat = a_coords_dtostr(ll.lat);
527 s_lon = a_coords_dtostr(ll.lon);
528 fprintf ( f, "type=\"trackpoint\" latitude=\"%s\" longitude=\"%s\"", s_lat, s_lon );
532 if ( tp->altitude != VIK_DEFAULT_ALTITUDE ) {
533 gchar *s_alt = a_coords_dtostr(tp->altitude);
534 fprintf ( f, " altitude=\"%s\"", s_alt );
537 if ( tp->has_timestamp )
538 fprintf ( f, " unixtime=\"%ld\"", tp->timestamp );
539 if ( tp->newsegment )
540 fprintf ( f, " newsegment=\"yes\"" );
542 if (!isnan(tp->speed) || !isnan(tp->course) || tp->nsats > 0) {
543 fprintf ( f, " extended=\"yes\"" );
544 if (!isnan(tp->speed)) {
545 gchar *s_speed = a_coords_dtostr(tp->speed);
546 fprintf ( f, " speed=\"%s\"", s_speed );
549 if (!isnan(tp->course)) {
550 gchar *s_course = a_coords_dtostr(tp->course);
551 fprintf ( f, " course=\"%s\"", s_course );
555 fprintf ( f, " sat=\"%d\"", tp->nsats );
556 if (tp->fix_mode > 0)
557 fprintf ( f, " fix=\"%d\"", tp->fix_mode );
563 static void a_gpspoint_write_track ( const gpointer id, const VikTrack *trk, FILE *f )
571 fprintf ( f, "type=\"track\" name=\"%s\"", trk->name);
573 if ( trk->comment ) {
574 gchar *tmp = slashdup(trk->comment);
575 fprintf ( f, " comment=\"%s\"", tmp );
579 if ( trk->description ) {
580 gchar *tmp = slashdup(trk->description);
581 fprintf ( f, " description=\"%s\"", tmp );
585 if ( ! trk->visible ) {
586 fprintf ( f, " visible=\"n\"" );
590 g_list_foreach ( trk->trackpoints, (GFunc) a_gpspoint_write_trackpoint, f );
591 fprintf ( f, "type=\"trackend\"\n" );
594 void a_gpspoint_write_file ( VikTrwLayer *trw, FILE *f )
596 GHashTable *tracks = vik_trw_layer_get_tracks ( trw );
597 GHashTable *waypoints = vik_trw_layer_get_waypoints ( trw );
599 fprintf ( f, "type=\"waypointlist\"\n" );
600 g_hash_table_foreach ( waypoints, (GHFunc) a_gpspoint_write_waypoint, f );
601 fprintf ( f, "type=\"waypointlistend\"\n" );
602 g_hash_table_foreach ( tracks, (GHFunc) a_gpspoint_write_track, f );