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_image;
77 static gchar *line_symbol;
78 static gboolean line_newsegment = FALSE;
79 static gboolean line_has_timestamp = FALSE;
80 static time_t line_timestamp = 0;
81 static gdouble line_altitude = VIK_DEFAULT_ALTITUDE;
82 static gboolean line_visible = TRUE;
84 static gboolean line_extended = FALSE;
85 static gdouble line_speed = NAN;
86 static gdouble line_course = NAN;
87 static gint line_sat = 0;
88 static gint line_fix = 0;
89 /* other possible properties go here */
92 static void gpspoint_process_tag ( const gchar *tag, gint len );
93 static void gpspoint_process_key_and_value ( const gchar *key, gint key_len, const gchar *value, gint value_len );
95 static gchar *slashdup(const gchar *str)
97 guint16 len = strlen(str);
98 guint16 need_bs_count, i, j;
100 for ( i = 0, need_bs_count = 0; i < len; i++ )
101 if ( str[i] == '\\' || str[i] == '"' )
103 rv = g_malloc ( (len+need_bs_count+1) * sizeof(gchar) );
104 for ( i = 0, j = 0; i < len; i++, j++ )
106 if ( str[i] == '\\' || str[i] == '"' )
114 static gchar *deslashndup ( const gchar *str, guint16 len )
116 guint16 i,j, bs_count, new_len;
117 gboolean backslash = FALSE;
123 for ( i = 0, bs_count = 0; i < len; i++ )
124 if ( str[i] == '\\' )
130 if ( str[i-1] == '\\' && (len == 1 || str[i-2] != '\\') )
133 new_len = len - bs_count;
134 rv = g_malloc ( (new_len+1) * sizeof(gchar) );
135 for ( i = 0, j = 0; i < len && j < new_len; i++ )
136 if ( str[i] == '\\' && !backslash )
149 * Returns whether file read was a success
150 * No obvious way to test for a 'gpspoint' file,
151 * thus set a flag if any actual tag found during processing of the file
153 gboolean a_gpspoint_read_file(VikTrwLayer *trw, FILE *f ) {
154 VikCoordMode coord_mode = vik_trw_layer_get_coord_mode ( trw );
155 gchar *tag_start, *tag_end;
156 g_assert ( f != NULL && trw != NULL );
159 line_newsegment = FALSE;
162 current_track = NULL;
163 gboolean have_read_something = FALSE;
165 while (fgets(line_buffer, 2048, f))
167 gboolean inside_quote = 0;
168 gboolean backslash = 0;
170 line_buffer[strlen(line_buffer)-1] = '\0'; /* chop off newline */
172 /* for gpspoint files wrapped inside */
173 if ( strlen(line_buffer) >= 13 && strncmp ( line_buffer, "~EndLayerData", 13 ) == 0 )
176 /* each line: nullify stuff, make thing if nes, free name if ness */
177 tag_start = line_buffer;
180 /* my addition: find first non-whitespace character. if the null, skip line. */
181 while (*tag_start != '\0' && isspace(*tag_start))
183 if (tag_start == '\0')
186 if (*tag_start == '#')
191 inside_quote = !inside_quote;
192 while (*tag_end != '\0' && (!isspace(*tag_end) || inside_quote)) {
194 if (*tag_end == '\\' && !backslash)
198 else if (*tag_end == '"')
199 inside_quote = !inside_quote;
202 gpspoint_process_tag ( tag_start, tag_end - tag_start );
204 if (*tag_end == '\0' )
207 tag_start = tag_end+1;
209 if (line_type == GPSPOINT_TYPE_WAYPOINT && line_name)
211 have_read_something = TRUE;
212 VikWaypoint *wp = vik_waypoint_new();
213 wp->visible = line_visible;
214 wp->altitude = line_altitude;
216 vik_coord_load_from_latlon ( &(wp->coord), coord_mode, &line_latlon );
218 vik_trw_layer_filein_add_waypoint ( trw, line_name, wp );
219 g_free ( line_name );
224 vik_waypoint_set_comment ( wp, line_comment );
230 vik_waypoint_set_image ( wp, line_image );
236 vik_waypoint_set_symbol ( wp, line_symbol );
240 else if (line_type == GPSPOINT_TYPE_TRACK && line_name)
242 have_read_something = TRUE;
243 VikTrack *pl = vik_track_new();
245 /* Thanks to Peter Jones for this Fix */
246 if (!line_name) line_name = g_strdup("UNK");
248 pl->visible = line_visible;
252 vik_track_set_comment ( pl, line_comment );
256 pl->trackpoints = NULL;
257 vik_trw_layer_filein_add_track ( trw, line_name, pl );
258 g_free ( line_name );
263 else if (line_type == GPSPOINT_TYPE_TRACKPOINT && current_track)
265 have_read_something = TRUE;
266 VikTrackpoint *tp = vik_trackpoint_new();
267 vik_coord_load_from_latlon ( &(tp->coord), coord_mode, &line_latlon );
268 tp->newsegment = line_newsegment;
269 tp->has_timestamp = line_has_timestamp;
270 tp->timestamp = line_timestamp;
271 tp->altitude = line_altitude;
273 tp->speed = line_speed;
274 tp->course = line_course;
275 tp->nsats = line_sat;
276 tp->fix_mode = line_fix;
278 current_track->trackpoints = g_list_append ( current_track->trackpoints, tp );
282 g_free ( line_name );
285 g_free ( line_comment );
287 g_free ( line_image );
289 g_free ( line_symbol );
293 line_type = GPSPOINT_TYPE_NONE;
294 line_newsegment = FALSE;
295 line_has_timestamp = FALSE;
297 line_altitude = VIK_DEFAULT_ALTITUDE;
301 line_extended = FALSE;
308 return have_read_something;
311 /* Tag will be of a few defined forms:
317 So we must determine end of tag name, start of value, end of value.
319 static void gpspoint_process_tag ( const gchar *tag, gint len )
321 const gchar *key_end, *value_start, *value_end;
323 /* Searching for key end */
326 while (++key_end - tag < len)
330 if (key_end - tag == len)
331 return; /* no good */
333 if (key_end - tag == len + 1)
334 value_start = value_end = 0; /* size = 0 */
337 value_start = key_end + 1; /* equal_sign plus one */
339 if (*value_start == '"')
342 if (*value_start == '"')
343 value_start = value_end = 0; /* size = 0 */
346 if (*(tag+len-1) == '"')
347 value_end = tag + len - 1;
353 value_end = tag + len; /* value start really IS value start. */
355 gpspoint_process_key_and_value(tag, key_end - tag, value_start, value_end - value_start);
360 value = NULL for none
362 static void gpspoint_process_key_and_value ( const gchar *key, gint key_len, const gchar *value, gint value_len )
364 if (key_len == 4 && strncasecmp( key, "type", key_len ) == 0 )
367 line_type = GPSPOINT_TYPE_NONE;
368 else if (value_len == 5 && strncasecmp( value, "track", value_len ) == 0 )
369 line_type = GPSPOINT_TYPE_TRACK;
370 else if (value_len == 10 && strncasecmp( value, "trackpoint", value_len ) == 0 )
371 line_type = GPSPOINT_TYPE_TRACKPOINT;
372 else if (value_len == 8 && strncasecmp( value, "waypoint", value_len ) == 0 )
373 line_type = GPSPOINT_TYPE_WAYPOINT;
375 /* all others are ignored */
376 line_type = GPSPOINT_TYPE_NONE;
378 else if (key_len == 4 && strncasecmp( key, "name", key_len ) == 0 && value != NULL)
380 if (line_name == NULL)
382 line_name = g_strndup ( value, value_len );
385 else if (key_len == 7 && strncasecmp( key, "comment", key_len ) == 0 && value != NULL)
387 if (line_comment == NULL)
388 line_comment = deslashndup ( value, value_len );
390 else if (key_len == 5 && strncasecmp( key, "image", key_len ) == 0 && value != NULL)
392 if (line_image == NULL)
393 line_image = deslashndup ( value, value_len );
395 else if (key_len == 8 && strncasecmp( key, "latitude", key_len ) == 0 && value != NULL)
397 line_latlon.lat = g_ascii_strtod(value, NULL);
399 else if (key_len == 9 && strncasecmp( key, "longitude", key_len ) == 0 && value != NULL)
401 line_latlon.lon = g_ascii_strtod(value, NULL);
403 else if (key_len == 8 && strncasecmp( key, "altitude", key_len ) == 0 && value != NULL)
405 line_altitude = g_ascii_strtod(value, NULL);
407 else if (key_len == 7 && strncasecmp( key, "visible", key_len ) == 0 && value[0] != 'y' && value[0] != 'Y' && value[0] != 't' && value[0] != 'T')
409 line_visible = FALSE;
411 else if (key_len == 6 && strncasecmp( key, "symbol", key_len ) == 0 && value != NULL)
413 line_symbol = g_strndup ( value, value_len );
415 else if (key_len == 8 && strncasecmp( key, "unixtime", key_len ) == 0 && value != NULL)
417 line_timestamp = g_ascii_strtod(value, NULL);
418 if ( line_timestamp != 0x80000000 )
419 line_has_timestamp = TRUE;
421 else if (key_len == 10 && strncasecmp( key, "newsegment", key_len ) == 0 && value != NULL)
423 line_newsegment = TRUE;
425 else if (key_len == 8 && strncasecmp( key, "extended", key_len ) == 0 && value != NULL)
427 line_extended = TRUE;
429 else if (key_len == 5 && strncasecmp( key, "speed", key_len ) == 0 && value != NULL)
431 line_speed = g_ascii_strtod(value, NULL);
433 else if (key_len == 6 && strncasecmp( key, "course", key_len ) == 0 && value != NULL)
435 line_course = g_ascii_strtod(value, NULL);
437 else if (key_len == 3 && strncasecmp( key, "sat", key_len ) == 0 && value != NULL)
439 line_sat = atoi(value);
441 else if (key_len == 3 && strncasecmp( key, "fix", key_len ) == 0 && value != NULL)
443 line_fix = atoi(value);
447 static void a_gpspoint_write_waypoint ( const gpointer id, const VikWaypoint *wp, FILE *f )
449 static struct LatLon ll;
450 gchar *s_lat, *s_lon;
452 if ( wp && !(wp->name) ) {
455 vik_coord_to_latlon ( &(wp->coord), &ll );
456 s_lat = a_coords_dtostr(ll.lat);
457 s_lon = a_coords_dtostr(ll.lon);
458 fprintf ( f, "type=\"waypoint\" latitude=\"%s\" longitude=\"%s\" name=\"%s\"", s_lat, s_lon, wp->name );
462 if ( wp->altitude != VIK_DEFAULT_ALTITUDE ) {
463 gchar *s_alt = a_coords_dtostr(wp->altitude);
464 fprintf ( f, " altitude=\"%s\"", s_alt );
469 gchar *tmp_comment = slashdup(wp->comment);
470 fprintf ( f, " comment=\"%s\"", tmp_comment );
471 g_free ( tmp_comment );
475 gchar *tmp_image = slashdup(wp->image);
476 fprintf ( f, " image=\"%s\"", tmp_image );
477 g_free ( tmp_image );
481 fprintf ( f, " symbol=\"%s\"", wp->symbol );
484 fprintf ( f, " visible=\"n\"" );
488 static void a_gpspoint_write_trackpoint ( VikTrackpoint *tp, FILE *f )
490 static struct LatLon ll;
491 gchar *s_lat, *s_lon;
492 vik_coord_to_latlon ( &(tp->coord), &ll );
494 /* TODO: modify a_coords_dtostr() to accept (optional) buffer
495 * instead of doing malloc/free everytime */
496 s_lat = a_coords_dtostr(ll.lat);
497 s_lon = a_coords_dtostr(ll.lon);
498 fprintf ( f, "type=\"trackpoint\" latitude=\"%s\" longitude=\"%s\"", s_lat, s_lon );
502 if ( tp->altitude != VIK_DEFAULT_ALTITUDE ) {
503 gchar *s_alt = a_coords_dtostr(tp->altitude);
504 fprintf ( f, " altitude=\"%s\"", s_alt );
507 if ( tp->has_timestamp )
508 fprintf ( f, " unixtime=\"%ld\"", tp->timestamp );
509 if ( tp->newsegment )
510 fprintf ( f, " newsegment=\"yes\"" );
512 if (!isnan(tp->speed) || !isnan(tp->course) || tp->nsats > 0) {
513 fprintf ( f, " extended=\"yes\"" );
514 if (!isnan(tp->speed)) {
515 gchar *s_speed = a_coords_dtostr(tp->speed);
516 fprintf ( f, " speed=\"%s\"", s_speed );
519 if (!isnan(tp->course)) {
520 gchar *s_course = a_coords_dtostr(tp->course);
521 fprintf ( f, " course=\"%s\"", s_course );
525 fprintf ( f, " sat=\"%d\"", tp->nsats );
526 if (tp->fix_mode > 0)
527 fprintf ( f, " fix=\"%d\"", tp->fix_mode );
533 static void a_gpspoint_write_track ( const gpointer id, const VikTrack *t, FILE *f )
536 if ( t && !(t->name) ) {
541 gchar *tmp_comment = slashdup(t->comment);
542 fprintf ( f, "type=\"track\" name=\"%s\" comment=\"%s\"%s\n", t->name, tmp_comment, t->visible ? "" : " visible=\"n\"" );
543 g_free ( tmp_comment );
546 fprintf ( f, "type=\"track\" name=\"%s\"%s\n", t->name, t->visible ? "" : " visible=\"n\"" );
547 g_list_foreach ( t->trackpoints, (GFunc) a_gpspoint_write_trackpoint, f );
548 fprintf ( f, "type=\"trackend\"\n" );
551 void a_gpspoint_write_file ( VikTrwLayer *trw, FILE *f )
553 GHashTable *tracks = vik_trw_layer_get_tracks ( trw );
554 GHashTable *waypoints = vik_trw_layer_get_waypoints ( trw );
556 fprintf ( f, "type=\"waypointlist\"\n" );
557 g_hash_table_foreach ( waypoints, (GHFunc) a_gpspoint_write_waypoint, f );
558 fprintf ( f, "type=\"waypointlistend\"\n" );
559 g_hash_table_foreach ( tracks, (GHFunc) a_gpspoint_write_track, f );