2 * viking -- GPS Data and Topo Analyzer, Explorer, and Manager
4 * Copyright (C) 2003-2005, Evan Battaglia <gtoevan@gmx.net>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
40 static void a_gpspoint_write_track ( const gchar *name, VikTrack *t, FILE *f );
41 static void a_gpspoint_write_trackpoint ( VikTrackpoint *tp, FILE *f );
42 static void a_gpspoint_write_waypoint ( const gchar *name, VikWaypoint *wp, FILE *f );
45 /* outline for file gpspoint.c
50 get first tag, if not type, skip it.
51 if type, record type. if waypoint list, etc move on. if track, make a new track, make it current track, add it, etc.
52 if waypoint, read on and store to the waypoint.
53 if trackpoint, make trackpoint, store to current track (error / skip if none)
57 /* Thanks to etrex-cache's gpsbabel's gpspoint.c for starting me off! */
59 static char line_buffer[2048];
61 #define GPSPOINT_TYPE_NONE 0
62 #define GPSPOINT_TYPE_WAYPOINT 1
63 #define GPSPOINT_TYPE_TRACKPOINT 2
64 /* #define GPSPOINT_TYPE_ROUTEPOINT 3 */
65 #define GPSPOINT_TYPE_TRACK 4
67 /* #define GPSPOINT_TYPE_ROUTE 5 */
69 static VikTrack *current_track; /* pointer to pointer to first GList */
71 static gint line_type = GPSPOINT_TYPE_NONE;
72 static struct LatLon line_latlon;
73 static gchar *line_name;
74 static gchar *line_comment;
75 static gchar *line_image;
76 static gchar *line_symbol;
77 static gboolean line_newsegment = FALSE;
78 static gboolean line_has_timestamp = FALSE;
79 static time_t line_timestamp = 0;
80 static gdouble line_altitude = VIK_DEFAULT_ALTITUDE;
81 static gboolean line_visible = TRUE;
83 static gboolean line_extended = FALSE;
84 static gdouble line_speed = NAN;
85 static gdouble line_course = NAN;
86 static gint line_sat = 0;
87 static gint line_fix = 0;
88 /* other possible properties go here */
91 static void gpspoint_process_tag ( const gchar *tag, gint len );
92 static void gpspoint_process_key_and_value ( const gchar *key, gint key_len, const gchar *value, gint value_len );
94 static gchar *slashdup(const gchar *str)
96 guint16 len = strlen(str);
97 guint16 need_bs_count, i, j;
99 for ( i = 0, need_bs_count = 0; i < len; i++ )
100 if ( str[i] == '\\' || str[i] == '"' )
102 rv = g_malloc ( (len+need_bs_count+1) * sizeof(gchar) );
103 for ( i = 0, j = 0; i < len; i++, j++ )
105 if ( str[i] == '\\' || str[i] == '"' )
113 static gchar *deslashndup ( const gchar *str, guint16 len )
115 guint16 i,j, bs_count, new_len;
116 gboolean backslash = FALSE;
122 for ( i = 0, bs_count = 0; i < len; i++ )
123 if ( str[i] == '\\' )
129 if ( str[i-1] == '\\' && (len == 1 || str[i-2] != '\\') )
132 new_len = len - bs_count;
133 rv = g_malloc ( (new_len+1) * sizeof(gchar) );
134 for ( i = 0, j = 0; i < len && j < new_len; i++ )
135 if ( str[i] == '\\' && !backslash )
147 void a_gpspoint_read_file(VikTrwLayer *trw, FILE *f ) {
148 VikCoordMode coord_mode = vik_trw_layer_get_coord_mode ( trw );
149 gchar *tag_start, *tag_end;
150 g_assert ( f != NULL && trw != NULL );
153 line_newsegment = FALSE;
157 current_track = NULL;
158 while (fgets(line_buffer, 2048, f))
160 gboolean inside_quote = 0;
161 gboolean backslash = 0;
163 line_buffer[strlen(line_buffer)-1] = '\0'; /* chop off newline */
165 /* for gpspoint files wrapped inside */
166 if ( strlen(line_buffer) >= 13 && strncmp ( line_buffer, "~EndLayerData", 13 ) == 0 )
169 /* each line: nullify stuff, make thing if nes, free name if ness */
170 tag_start = line_buffer;
173 /* my addition: find first non-whitespace character. if the null, skip line. */
174 while (*tag_start != '\0' && isspace(*tag_start))
176 if (tag_start == '\0')
179 if (*tag_start == '#')
184 inside_quote = !inside_quote;
185 while (*tag_end != '\0' && (!isspace(*tag_end) || inside_quote)) {
187 if (*tag_end == '\\' && !backslash)
191 else if (*tag_end == '"')
192 inside_quote = !inside_quote;
195 gpspoint_process_tag ( tag_start, tag_end - tag_start );
197 if (*tag_end == '\0' )
200 tag_start = tag_end+1;
202 if (line_type == GPSPOINT_TYPE_WAYPOINT && line_name)
204 VikWaypoint *wp = vik_waypoint_new();
205 wp->visible = line_visible;
206 wp->altitude = line_altitude;
208 vik_coord_load_from_latlon ( &(wp->coord), coord_mode, &line_latlon );
210 vik_trw_layer_filein_add_waypoint ( trw, line_name, wp );
211 g_free ( line_name );
216 vik_waypoint_set_comment ( wp, line_comment );
222 vik_waypoint_set_image ( wp, line_image );
228 vik_waypoint_set_symbol ( wp, line_symbol );
232 else if (line_type == GPSPOINT_TYPE_TRACK && line_name)
234 VikTrack *pl = vik_track_new();
236 /* Thanks to Peter Jones for this Fix */
237 if (!line_name) line_name = g_strdup("UNK");
239 pl->visible = line_visible;
243 vik_track_set_comment ( pl, line_comment );
247 pl->trackpoints = NULL;
248 vik_trw_layer_filein_add_track ( trw, line_name, pl );
249 g_free ( line_name );
254 else if (line_type == GPSPOINT_TYPE_TRACKPOINT && current_track)
256 VikTrackpoint *tp = vik_trackpoint_new();
257 vik_coord_load_from_latlon ( &(tp->coord), coord_mode, &line_latlon );
258 tp->newsegment = line_newsegment;
259 tp->has_timestamp = line_has_timestamp;
260 tp->timestamp = line_timestamp;
261 tp->altitude = line_altitude;
263 tp->speed = line_speed;
264 tp->course = line_course;
265 tp->nsats = line_sat;
266 tp->fix_mode = line_fix;
268 current_track->trackpoints = g_list_append ( current_track->trackpoints, tp );
272 g_free ( line_name );
275 g_free ( line_comment );
277 g_free ( line_image );
279 g_free ( line_symbol );
283 line_type = GPSPOINT_TYPE_NONE;
284 line_newsegment = FALSE;
285 line_has_timestamp = FALSE;
287 line_altitude = VIK_DEFAULT_ALTITUDE;
291 line_extended = FALSE;
299 /* Tag will be of a few defined forms:
305 So we must determine end of tag name, start of value, end of value.
307 static void gpspoint_process_tag ( const gchar *tag, gint len )
309 const gchar *key_end, *value_start, *value_end;
311 /* Searching for key end */
314 while (++key_end - tag < len)
318 if (key_end - tag == len)
319 return; /* no good */
321 if (key_end - tag == len + 1)
322 value_start = value_end = 0; /* size = 0 */
325 value_start = key_end + 1; /* equal_sign plus one */
327 if (*value_start == '"')
330 if (*value_start == '"')
331 value_start = value_end = 0; /* size = 0 */
334 if (*(tag+len-1) == '"')
335 value_end = tag + len - 1;
341 value_end = tag + len; /* value start really IS value start. */
343 gpspoint_process_key_and_value(tag, key_end - tag, value_start, value_end - value_start);
348 value = NULL for none
350 static void gpspoint_process_key_and_value ( const gchar *key, gint key_len, const gchar *value, gint value_len )
352 if (key_len == 4 && strncasecmp( key, "type", key_len ) == 0 )
355 line_type = GPSPOINT_TYPE_NONE;
356 else if (value_len == 5 && strncasecmp( value, "track", value_len ) == 0 )
357 line_type = GPSPOINT_TYPE_TRACK;
358 else if (value_len == 10 && strncasecmp( value, "trackpoint", value_len ) == 0 )
359 line_type = GPSPOINT_TYPE_TRACKPOINT;
360 else if (value_len == 8 && strncasecmp( value, "waypoint", value_len ) == 0 )
361 line_type = GPSPOINT_TYPE_WAYPOINT;
363 /* all others are ignored */
364 line_type = GPSPOINT_TYPE_NONE;
366 else if (key_len == 4 && strncasecmp( key, "name", key_len ) == 0 && value != NULL)
368 if (line_name == NULL)
370 line_name = g_strndup ( value, value_len );
373 else if (key_len == 7 && strncasecmp( key, "comment", key_len ) == 0 && value != NULL)
375 if (line_comment == NULL)
376 line_comment = deslashndup ( value, value_len );
378 else if (key_len == 5 && strncasecmp( key, "image", key_len ) == 0 && value != NULL)
380 if (line_image == NULL)
381 line_image = deslashndup ( value, value_len );
383 else if (key_len == 8 && strncasecmp( key, "latitude", key_len ) == 0 && value != NULL)
385 line_latlon.lat = g_ascii_strtod(value, NULL);
387 else if (key_len == 9 && strncasecmp( key, "longitude", key_len ) == 0 && value != NULL)
389 line_latlon.lon = g_ascii_strtod(value, NULL);
391 else if (key_len == 8 && strncasecmp( key, "altitude", key_len ) == 0 && value != NULL)
393 line_altitude = g_ascii_strtod(value, NULL);
395 else if (key_len == 7 && strncasecmp( key, "visible", key_len ) == 0 && value[0] != 'y' && value[0] != 'Y' && value[0] != 't' && value[0] != 'T')
397 line_visible = FALSE;
399 else if (key_len == 6 && strncasecmp( key, "symbol", key_len ) == 0 && value != NULL)
401 line_symbol = g_strndup ( value, value_len );
403 else if (key_len == 8 && strncasecmp( key, "unixtime", key_len ) == 0 && value != NULL)
405 line_timestamp = g_ascii_strtod(value, NULL);
406 if ( line_timestamp != 0x80000000 )
407 line_has_timestamp = TRUE;
409 else if (key_len == 10 && strncasecmp( key, "newsegment", key_len ) == 0 && value != NULL)
411 line_newsegment = TRUE;
413 else if (key_len == 8 && strncasecmp( key, "extended", key_len ) == 0 && value != NULL)
415 line_extended = TRUE;
417 else if (key_len == 5 && strncasecmp( key, "speed", key_len ) == 0 && value != NULL)
419 line_speed = g_ascii_strtod(value, NULL);
421 else if (key_len == 6 && strncasecmp( key, "course", key_len ) == 0 && value != NULL)
423 line_course = g_ascii_strtod(value, NULL);
425 else if (key_len == 3 && strncasecmp( key, "sat", key_len ) == 0 && value != NULL)
427 line_sat = atoi(value);
429 else if (key_len == 3 && strncasecmp( key, "fix", key_len ) == 0 && value != NULL)
431 line_fix = atoi(value);
435 static void a_gpspoint_write_waypoint ( const gchar *name, VikWaypoint *wp, FILE *f )
437 static struct LatLon ll;
438 gchar *s_lat, *s_lon;
439 vik_coord_to_latlon ( &(wp->coord), &ll );
440 s_lat = a_coords_dtostr(ll.lat);
441 s_lon = a_coords_dtostr(ll.lon);
442 fprintf ( f, "type=\"waypoint\" latitude=\"%s\" longitude=\"%s\" name=\"%s\"", s_lat, s_lon, name );
446 if ( wp->altitude != VIK_DEFAULT_ALTITUDE ) {
447 gchar *s_alt = a_coords_dtostr(wp->altitude);
448 fprintf ( f, " altitude=\"%s\"", s_alt );
453 gchar *tmp_comment = slashdup(wp->comment);
454 fprintf ( f, " comment=\"%s\"", tmp_comment );
455 g_free ( tmp_comment );
459 gchar *tmp_image = slashdup(wp->image);
460 fprintf ( f, " image=\"%s\"", tmp_image );
461 g_free ( tmp_image );
465 fprintf ( f, " symbol=\"%s\"", wp->symbol );
468 fprintf ( f, " visible=\"n\"" );
472 static void a_gpspoint_write_trackpoint ( VikTrackpoint *tp, FILE *f )
474 static struct LatLon ll;
475 gchar *s_lat, *s_lon;
476 vik_coord_to_latlon ( &(tp->coord), &ll );
478 /* TODO: modify a_coords_dtostr() to accept (optional) buffer
479 * instead of doing malloc/free everytime */
480 s_lat = a_coords_dtostr(ll.lat);
481 s_lon = a_coords_dtostr(ll.lon);
482 fprintf ( f, "type=\"trackpoint\" latitude=\"%s\" longitude=\"%s\"", s_lat, s_lon );
486 if ( tp->altitude != VIK_DEFAULT_ALTITUDE ) {
487 gchar *s_alt = a_coords_dtostr(tp->altitude);
488 fprintf ( f, " altitude=\"%s\"", s_alt );
491 if ( tp->has_timestamp )
492 fprintf ( f, " unixtime=\"%ld\"", tp->timestamp );
493 if ( tp->newsegment )
494 fprintf ( f, " newsegment=\"yes\"" );
496 if (!isnan(tp->speed) || !isnan(tp->course) || tp->nsats > 0) {
497 fprintf ( f, " extended=\"yes\"" );
498 if (!isnan(tp->speed)) {
499 gchar *s_speed = a_coords_dtostr(tp->speed);
500 fprintf ( f, " speed=\"%s\"", s_speed );
503 if (!isnan(tp->course)) {
504 gchar *s_course = a_coords_dtostr(tp->course);
505 fprintf ( f, " course=\"%s\"", s_course );
509 fprintf ( f, " sat=\"%d\"", tp->nsats );
510 if (tp->fix_mode > 0)
511 fprintf ( f, " fix=\"%d\"", tp->fix_mode );
517 static void a_gpspoint_write_track ( const gchar *name, VikTrack *t, FILE *f )
521 gchar *tmp_comment = slashdup(t->comment);
522 fprintf ( f, "type=\"track\" name=\"%s\" comment=\"%s\"%s\n", name, tmp_comment, t->visible ? "" : " visible=\"n\"" );
523 g_free ( tmp_comment );
526 fprintf ( f, "type=\"track\" name=\"%s\"%s\n", name, t->visible ? "" : " visible=\"n\"" );
527 g_list_foreach ( t->trackpoints, (GFunc) a_gpspoint_write_trackpoint, f );
528 fprintf ( f, "type=\"trackend\"\n" );
531 void a_gpspoint_write_file ( VikTrwLayer *trw, FILE *f )
533 GHashTable *tracks = vik_trw_layer_get_tracks ( trw );
534 GHashTable *waypoints = vik_trw_layer_get_waypoints ( trw );
536 fprintf ( f, "type=\"waypointlist\"\n" );
537 g_hash_table_foreach ( waypoints, (GHFunc) a_gpspoint_write_waypoint, f );
538 fprintf ( f, "type=\"waypointlistend\"\n" );
539 g_hash_table_foreach ( tracks, (GHFunc) a_gpspoint_write_track, f );