2 * viking -- GPS Data and Topo Analyzer, Explorer, and Manager
4 * Copyright (C) 2003-2007, Evan Battaglia <gtoevan@gmx.net>
5 * Copyright (C) 2007, Quy Tonthat <qtonthat@gmail.com>
6 * Copyright (C) 2008, Hein Ragas <viking@ragas.nl>
7 * Copyright (C) 2009, Tal B <tal.bav@gmail.com>
8 * Copyright (c) 2012-2014, Rob Norris <rw_norris@hotmail.com>
10 * Some of the code adapted from GPSBabel 1.2.7
11 * http://gpsbabel.sf.net/
12 * Copyright (C) 2002, 2003, 2004, 2005 Robert Lipe, robertlipe@usa.net
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
33 #define _XOPEN_SOURCE /* glibc2 needs this */
42 #include <glib/gstdio.h>
43 #include <glib/gi18n.h>
69 tt_wpt_link, /* New in GPX 1.1 */
82 tt_trk_trkseg_trkpt_ele,
83 tt_trk_trkseg_trkpt_time,
84 tt_trk_trkseg_trkpt_name,
86 tt_trk_trkseg_trkpt_course,
87 tt_trk_trkseg_trkpt_speed,
88 tt_trk_trkseg_trkpt_fix,
89 tt_trk_trkseg_trkpt_sat,
91 tt_trk_trkseg_trkpt_hdop,
92 tt_trk_trkseg_trkpt_vdop,
93 tt_trk_trkseg_trkpt_pdop,
100 typedef struct tag_mapping {
101 tag_type tag_type; /* enum from above for this tag */
102 const char *tag_name; /* xpath-ish tag name */
106 GpxWritingOptions *options;
111 * xpath(ish) mappings between full tag paths and internal identifiers.
112 * These appear in the order they appear in the GPX specification.
113 * If it's not a tag we explicitly handle, it doesn't go here.
116 tag_mapping tag_path_map[] = {
119 { tt_gpx_name, "/gpx/name" },
120 { tt_gpx_desc, "/gpx/desc" },
121 { tt_gpx_time, "/gpx/time" },
122 { tt_gpx_author, "/gpx/author" },
123 { tt_gpx_keywords, "/gpx/keywords" },
125 // GPX 1.1 variant - basic properties moved into metadata namespace
126 { tt_gpx_name, "/gpx/metadata/name" },
127 { tt_gpx_desc, "/gpx/metadata/desc" },
128 { tt_gpx_time, "/gpx/metadata/time" },
129 { tt_gpx_author, "/gpx/metadata/author" },
130 { tt_gpx_keywords, "/gpx/metadata/keywords" },
132 { tt_wpt, "/gpx/wpt" },
134 { tt_waypoint, "/loc/waypoint" },
135 { tt_waypoint_coord, "/loc/waypoint/coord" },
136 { tt_waypoint_name, "/loc/waypoint/name" },
138 { tt_wpt_ele, "/gpx/wpt/ele" },
139 { tt_wpt_time, "/gpx/wpt/time" },
140 { tt_wpt_name, "/gpx/wpt/name" },
141 { tt_wpt_cmt, "/gpx/wpt/cmt" },
142 { tt_wpt_desc, "/gpx/wpt/desc" },
143 { tt_wpt_src, "/gpx/wpt/src" },
144 { tt_wpt_type, "/gpx/wpt/type" },
145 { tt_wpt_sym, "/gpx/wpt/sym" },
146 { tt_wpt_sym, "/loc/waypoint/type" },
147 { tt_wpt_url, "/gpx/wpt/url" },
148 { tt_wpt_link, "/gpx/wpt/link" }, /* GPX 1.1 */
150 { tt_trk, "/gpx/trk" },
151 { tt_trk_name, "/gpx/trk/name" },
152 { tt_trk_cmt, "/gpx/trk/cmt" },
153 { tt_trk_desc, "/gpx/trk/desc" },
154 { tt_trk_src, "/gpx/trk/src" },
155 { tt_trk_type, "/gpx/trk/type" },
156 { tt_trk_trkseg, "/gpx/trk/trkseg" },
157 { tt_trk_trkseg_trkpt, "/gpx/trk/trkseg/trkpt" },
158 { tt_trk_trkseg_trkpt_ele, "/gpx/trk/trkseg/trkpt/ele" },
159 { tt_trk_trkseg_trkpt_time, "/gpx/trk/trkseg/trkpt/time" },
160 { tt_trk_trkseg_trkpt_name, "/gpx/trk/trkseg/trkpt/name" },
162 { tt_trk_trkseg_trkpt_course, "/gpx/trk/trkseg/trkpt/course" },
163 { tt_trk_trkseg_trkpt_speed, "/gpx/trk/trkseg/trkpt/speed" },
164 { tt_trk_trkseg_trkpt_fix, "/gpx/trk/trkseg/trkpt/fix" },
165 { tt_trk_trkseg_trkpt_sat, "/gpx/trk/trkseg/trkpt/sat" },
167 { tt_trk_trkseg_trkpt_hdop, "/gpx/trk/trkseg/trkpt/hdop" },
168 { tt_trk_trkseg_trkpt_vdop, "/gpx/trk/trkseg/trkpt/vdop" },
169 { tt_trk_trkseg_trkpt_pdop, "/gpx/trk/trkseg/trkpt/pdop" },
171 { tt_rte, "/gpx/rte" },
172 // NB Route reuses track point feature tags
173 { tt_trk_name, "/gpx/rte/name" },
174 { tt_trk_cmt, "/gpx/rte/cmt" },
175 { tt_trk_desc, "/gpx/rte/desc" },
176 { tt_trk_src, "/gpx/rte/src" },
177 { tt_trk_trkseg_trkpt, "/gpx/rte/rtept" },
178 { tt_trk_trkseg_trkpt_name, "/gpx/rte/rtept/name" },
179 { tt_trk_trkseg_trkpt_ele, "/gpx/rte/rtept/ele" },
184 static tag_type get_tag(const char *t)
187 for (tm = tag_path_map; tm->tag_type != 0; tm++)
188 if (0 == strcmp(tm->tag_name, t))
193 /******************************************/
195 tag_type current_tag = tt_unknown;
196 GString *xpath = NULL;
197 GString *c_cdata = NULL;
199 /* current ("c_") objects */
200 VikTrackpoint *c_tp = NULL;
201 VikWaypoint *c_wp = NULL;
202 VikTrack *c_tr = NULL;
203 VikTRWMetadata *c_md = NULL;
205 gchar *c_wp_name = NULL;
206 gchar *c_tr_name = NULL;
208 /* temporary things so we don't have to create them lots of times */
209 const gchar *c_slat, *c_slon;
212 /* specialty flags / etc */
213 gboolean f_tr_newseg;
214 guint unnamed_waypoints = 0;
215 guint unnamed_tracks = 0;
216 guint unnamed_routes = 0;
218 static const char *get_attr ( const char **attr, const char *key )
221 if ( strcmp(*attr,key) == 0 )
228 static gboolean set_c_ll ( const char **attr )
230 if ( (c_slat = get_attr ( attr, "lat" )) && (c_slon = get_attr ( attr, "lon" )) ) {
231 c_ll.lat = g_ascii_strtod(c_slat, NULL);
232 c_ll.lon = g_ascii_strtod(c_slon, NULL);
238 static void gpx_start(VikTrwLayer *vtl, const char *el, const char **attr)
240 static const gchar *tmp;
242 g_string_append_c ( xpath, '/' );
243 g_string_append ( xpath, el );
244 current_tag = get_tag ( xpath->str );
246 switch ( current_tag ) {
249 c_md = vik_trw_metadata_new();
253 if ( set_c_ll( attr ) ) {
254 c_wp = vik_waypoint_new ();
255 c_wp->visible = TRUE;
256 if ( get_attr ( attr, "hidden" ) )
257 c_wp->visible = FALSE;
259 vik_coord_load_from_latlon ( &(c_wp->coord), vik_trw_layer_get_coord_mode ( vtl ), &c_ll );
265 c_tr = vik_track_new ();
266 vik_track_set_defaults ( c_tr );
267 c_tr->is_route = (current_tag == tt_rte) ? TRUE : FALSE;
268 c_tr->visible = TRUE;
269 if ( get_attr ( attr, "hidden" ) )
270 c_tr->visible = FALSE;
277 case tt_trk_trkseg_trkpt:
278 if ( set_c_ll( attr ) ) {
279 c_tp = vik_trackpoint_new ();
280 vik_coord_load_from_latlon ( &(c_tp->coord), vik_trw_layer_get_coord_mode ( vtl ), &c_ll );
282 c_tp->newsegment = TRUE;
285 c_tr->trackpoints = g_list_append ( c_tr->trackpoints, c_tp );
292 case tt_gpx_keywords:
294 case tt_trk_trkseg_trkpt_name:
295 case tt_trk_trkseg_trkpt_ele:
296 case tt_trk_trkseg_trkpt_time:
311 g_string_erase ( c_cdata, 0, -1 ); /* clear the cdata buffer */
315 c_wp = vik_waypoint_new ();
316 c_wp->visible = TRUE;
319 case tt_waypoint_coord:
320 if ( set_c_ll( attr ) )
321 vik_coord_load_from_latlon ( &(c_wp->coord), vik_trw_layer_get_coord_mode ( vtl ), &c_ll );
324 case tt_waypoint_name:
325 if ( ( tmp = get_attr(attr, "id") ) ) {
327 g_free ( c_wp_name );
328 c_wp_name = g_strdup ( tmp );
330 g_string_erase ( c_cdata, 0, -1 ); /* clear the cdata buffer for description */
337 // Allow user override / refinement of GPX tidying
338 #define VIK_SETTINGS_GPX_TIDY "gpx_tidy_points"
339 #define VIK_SETTINGS_GPX_TIDY_SPEED "gpx_tidy_points_max_speed"
344 static void track_tidy_processing ( VikTrwLayer *vtl )
346 // Default to automatically attempt tiding
347 gboolean do_tidy = TRUE;
348 gboolean btmp = TRUE;
349 if ( a_settings_get_boolean ( VIK_SETTINGS_GPX_TIDY, &btmp ) )
353 // highly unlikely to be going faster than this, especially for the first point
354 guint speed = 340; // Speed of Sound
357 if ( a_settings_get_integer ( VIK_SETTINGS_GPX_TIDY_SPEED, &itmp ) )
360 // NB bounds calculated in subsequent layer post read,
361 // so no need to do it now
362 vik_trw_layer_tidy_tracks ( vtl, speed, FALSE );
366 static void gpx_end(VikTrwLayer *vtl, const char *el)
368 static GTimeVal tp_time;
369 static GTimeVal wp_time;
371 g_string_truncate ( xpath, xpath->len - strlen(el) - 1 );
373 switch ( current_tag ) {
376 vik_trw_layer_set_metadata ( vtl, c_md );
379 // Essentially the end for a TrackWaypoint layer,
380 // so any specific GPX post processing can occur here
381 track_tidy_processing ( vtl );
386 vik_layer_rename ( VIK_LAYER(vtl), c_cdata->str );
387 g_string_erase ( c_cdata, 0, -1 );
392 g_free ( c_md->author );
393 c_md->author = g_strdup ( c_cdata->str );
394 g_string_erase ( c_cdata, 0, -1 );
398 if ( c_md->description )
399 g_free ( c_md->description );
400 c_md->description = g_strdup ( c_cdata->str );
401 g_string_erase ( c_cdata, 0, -1 );
404 case tt_gpx_keywords:
405 if ( c_md->keywords )
406 g_free ( c_md->keywords );
407 c_md->keywords = g_strdup ( c_cdata->str );
408 g_string_erase ( c_cdata, 0, -1 );
412 if ( c_md->timestamp )
413 g_free ( c_md->timestamp );
414 c_md->timestamp = g_strdup ( c_cdata->str );
415 g_string_erase ( c_cdata, 0, -1 );
421 c_wp_name = g_strdup_printf("VIKING_WP%04d", unnamed_waypoints++);
422 vik_trw_layer_filein_add_waypoint ( vtl, c_wp_name, c_wp );
423 g_free ( c_wp_name );
430 c_tr_name = g_strdup_printf("VIKING_TR%03d", unnamed_tracks++);
431 // Delibrate fall through
434 c_tr_name = g_strdup_printf("VIKING_RT%03d", unnamed_routes++);
435 vik_trw_layer_filein_add_track ( vtl, c_tr_name, c_tr );
436 g_free ( c_tr_name );
443 g_free ( c_wp_name );
444 c_wp_name = g_strdup ( c_cdata->str );
445 g_string_erase ( c_cdata, 0, -1 );
450 g_free ( c_tr_name );
451 c_tr_name = g_strdup ( c_cdata->str );
452 g_string_erase ( c_cdata, 0, -1 );
456 c_wp->altitude = g_ascii_strtod ( c_cdata->str, NULL );
457 g_string_erase ( c_cdata, 0, -1 );
460 case tt_trk_trkseg_trkpt_ele:
461 c_tp->altitude = g_ascii_strtod ( c_cdata->str, NULL );
462 g_string_erase ( c_cdata, 0, -1 );
465 case tt_waypoint_name: /* .loc name is really description. */
467 vik_waypoint_set_description ( c_wp, c_cdata->str );
468 g_string_erase ( c_cdata, 0, -1 );
472 vik_waypoint_set_comment ( c_wp, c_cdata->str );
473 g_string_erase ( c_cdata, 0, -1 );
477 vik_waypoint_set_source ( c_wp, c_cdata->str );
478 g_string_erase ( c_cdata, 0, -1 );
482 vik_waypoint_set_type ( c_wp, c_cdata->str );
483 g_string_erase ( c_cdata, 0, -1 );
487 vik_waypoint_set_url ( c_wp, c_cdata->str );
488 g_string_erase ( c_cdata, 0, -1 );
492 vik_waypoint_set_image ( c_wp, c_cdata->str );
493 g_string_erase ( c_cdata, 0, -1 );
497 vik_waypoint_set_symbol ( c_wp, c_cdata->str );
498 g_string_erase ( c_cdata, 0, -1 );
503 vik_track_set_description ( c_tr, c_cdata->str );
504 g_string_erase ( c_cdata, 0, -1 );
508 vik_track_set_source ( c_tr, c_cdata->str );
509 g_string_erase ( c_cdata, 0, -1 );
513 vik_track_set_type ( c_tr, c_cdata->str );
514 g_string_erase ( c_cdata, 0, -1 );
518 vik_track_set_comment ( c_tr, c_cdata->str );
519 g_string_erase ( c_cdata, 0, -1 );
523 if ( g_time_val_from_iso8601(c_cdata->str, &wp_time) ) {
524 c_wp->timestamp = wp_time.tv_sec;
525 c_wp->has_timestamp = TRUE;
527 g_string_erase ( c_cdata, 0, -1 );
530 case tt_trk_trkseg_trkpt_name:
531 vik_trackpoint_set_name ( c_tp, c_cdata->str );
532 g_string_erase ( c_cdata, 0, -1 );
535 case tt_trk_trkseg_trkpt_time:
536 if ( g_time_val_from_iso8601(c_cdata->str, &tp_time) ) {
537 c_tp->timestamp = tp_time.tv_sec;
538 c_tp->has_timestamp = TRUE;
540 g_string_erase ( c_cdata, 0, -1 );
543 case tt_trk_trkseg_trkpt_course:
544 c_tp->course = g_ascii_strtod ( c_cdata->str, NULL );
545 g_string_erase ( c_cdata, 0, -1 );
548 case tt_trk_trkseg_trkpt_speed:
549 c_tp->speed = g_ascii_strtod ( c_cdata->str, NULL );
550 g_string_erase ( c_cdata, 0, -1 );
553 case tt_trk_trkseg_trkpt_fix:
554 if (!strcmp("2d", c_cdata->str))
555 c_tp->fix_mode = VIK_GPS_MODE_2D;
556 else if (!strcmp("3d", c_cdata->str))
557 c_tp->fix_mode = VIK_GPS_MODE_3D;
558 else if (!strcmp("dgps", c_cdata->str))
559 c_tp->fix_mode = VIK_GPS_MODE_DGPS;
560 else if (!strcmp("pps", c_cdata->str))
561 c_tp->fix_mode = VIK_GPS_MODE_PPS;
563 c_tp->fix_mode = VIK_GPS_MODE_NOT_SEEN;
564 g_string_erase ( c_cdata, 0, -1 );
567 case tt_trk_trkseg_trkpt_sat:
568 c_tp->nsats = atoi ( c_cdata->str );
569 g_string_erase ( c_cdata, 0, -1 );
572 case tt_trk_trkseg_trkpt_hdop:
573 c_tp->hdop = g_strtod ( c_cdata->str, NULL );
574 g_string_erase ( c_cdata, 0, -1 );
577 case tt_trk_trkseg_trkpt_vdop:
578 c_tp->vdop = g_strtod ( c_cdata->str, NULL );
579 g_string_erase ( c_cdata, 0, -1 );
582 case tt_trk_trkseg_trkpt_pdop:
583 c_tp->pdop = g_strtod ( c_cdata->str, NULL );
584 g_string_erase ( c_cdata, 0, -1 );
590 current_tag = get_tag ( xpath->str );
593 static void gpx_cdata(void *dta, const XML_Char *s, int len)
595 switch ( current_tag ) {
599 case tt_gpx_keywords:
604 case tt_trk_trkseg_trkpt_ele:
616 case tt_trk_trkseg_trkpt_time:
618 case tt_trk_trkseg_trkpt_name:
619 case tt_trk_trkseg_trkpt_course:
620 case tt_trk_trkseg_trkpt_speed:
621 case tt_trk_trkseg_trkpt_fix:
622 case tt_trk_trkseg_trkpt_sat:
623 case tt_trk_trkseg_trkpt_hdop:
624 case tt_trk_trkseg_trkpt_vdop:
625 case tt_trk_trkseg_trkpt_pdop:
626 case tt_waypoint_name: /* .loc name is really description. */
627 g_string_append_len ( c_cdata, s, len );
630 default: break; /* ignore cdata from other things */
634 // make like a "stack" of tag names
635 // like gpspoint's separated like /gpx/wpt/whatever
637 gboolean a_gpx_read_file( VikTrwLayer *vtl, FILE *f ) {
638 XML_Parser parser = XML_ParserCreate(NULL);
640 enum XML_Status status = XML_STATUS_ERROR;
642 XML_SetElementHandler(parser, (XML_StartElementHandler) gpx_start, (XML_EndElementHandler) gpx_end);
643 XML_SetUserData(parser, vtl); /* in the future we could remove all global variables */
644 XML_SetCharacterDataHandler(parser, (XML_CharacterDataHandler) gpx_cdata);
648 g_assert ( f != NULL && vtl != NULL );
650 xpath = g_string_new ( "" );
651 c_cdata = g_string_new ( "" );
653 unnamed_waypoints = 1;
658 len = fread(buf, 1, sizeof(buf)-7, f);
659 done = feof(f) || !len;
660 status = XML_Parse(parser, buf, len, done);
663 XML_ParserFree (parser);
664 g_string_free ( xpath, TRUE );
665 g_string_free ( c_cdata, TRUE );
667 return status != XML_STATUS_ERROR;
670 /**** entitize from GPSBabel ****/
678 entity_types stdentities[] = {
680 { "'", "'", 1 },
683 { "\"", """, 0 },
687 void utf8_to_int( const char *cp, int *bytes, int *value )
689 if ( (*cp & 0xe0) == 0xc0 ) {
690 if ( (*(cp+1) & 0xc0) != 0x80 ) goto dodefault;
692 *value = ((*cp & 0x1f) << 6) |
695 else if ( (*cp & 0xf0) == 0xe0 ) {
696 if ( (*(cp+1) & 0xc0) != 0x80 ) goto dodefault;
697 if ( (*(cp+2) & 0xc0) != 0x80 ) goto dodefault;
699 *value = ((*cp & 0x0f) << 12) |
700 ((*(cp+1) & 0x3f) << 6) |
703 else if ( (*cp & 0xf8) == 0xf0 ) {
704 if ( (*(cp+1) & 0xc0) != 0x80 ) goto dodefault;
705 if ( (*(cp+2) & 0xc0) != 0x80 ) goto dodefault;
706 if ( (*(cp+3) & 0xc0) != 0x80 ) goto dodefault;
708 *value = ((*cp & 0x07) << 18) |
709 ((*(cp+1) & 0x3f) << 12) |
710 ((*(cp+2) & 0x3f) << 6) |
713 else if ( (*cp & 0xfc) == 0xf8 ) {
714 if ( (*(cp+1) & 0xc0) != 0x80 ) goto dodefault;
715 if ( (*(cp+2) & 0xc0) != 0x80 ) goto dodefault;
716 if ( (*(cp+3) & 0xc0) != 0x80 ) goto dodefault;
717 if ( (*(cp+4) & 0xc0) != 0x80 ) goto dodefault;
719 *value = ((*cp & 0x03) << 24) |
720 ((*(cp+1) & 0x3f) << 18) |
721 ((*(cp+2) & 0x3f) << 12) |
722 ((*(cp+3) & 0x3f) << 6) |
725 else if ( (*cp & 0xfe) == 0xfc ) {
726 if ( (*(cp+1) & 0xc0) != 0x80 ) goto dodefault;
727 if ( (*(cp+2) & 0xc0) != 0x80 ) goto dodefault;
728 if ( (*(cp+3) & 0xc0) != 0x80 ) goto dodefault;
729 if ( (*(cp+4) & 0xc0) != 0x80 ) goto dodefault;
730 if ( (*(cp+5) & 0xc0) != 0x80 ) goto dodefault;
732 *value = ((*cp & 0x01) << 30) |
733 ((*(cp+1) & 0x3f) << 24) |
734 ((*(cp+2) & 0x3f) << 18) |
735 ((*(cp+3) & 0x3f) << 12) |
736 ((*(cp+4) & 0x3f) << 6) |
742 *value = (unsigned char)*cp;
748 entitize(const char * str)
750 int elen, ecount, nsecount;
753 char * p, * tmp, * xstr;
759 elen = ecount = nsecount = 0;
761 /* figure # of entity replacements and additional size. */
764 while ((cp = strstr(cp, ep->text)) != NULL) {
765 elen += strlen(ep->entity) - strlen(ep->text);
767 cp += strlen(ep->text);
772 /* figure the same for other than standard entities (i.e. anything
773 * that isn't in the range U+0000 to U+007F */
774 for ( cp = str; *cp; cp++ ) {
777 utf8_to_int( cp, &bytes, &value );
779 elen += sprintf( tmpsub, "&#x%x;", value ) - bytes;
784 /* enough space for the whole string plus entity replacements, if any */
785 tmp = g_malloc((strlen(str) + elen + 1));
788 /* no entity replacements */
789 if (ecount == 0 && nsecount == 0)
793 for (ep = stdentities; ep->text; ep++) {
795 while ((p = strstr(p, ep->text)) != NULL) {
796 elen = strlen(ep->entity);
798 xstr = g_strdup(p + strlen(ep->text));
800 strcpy(p, ep->entity);
801 strcpy(p + elen, xstr);
810 if ( nsecount != 0 ) {
814 utf8_to_int( p, &bytes, &value );
816 xstr = g_strdup( p + bytes );
821 sprintf( p, "&#x%x;", value );
835 /**** end GPSBabel code ****/
839 static void gpx_write_waypoint ( VikWaypoint *wp, GpxWritingContext *context )
841 // Don't write invisible waypoints when specified
842 if (context->options && !context->options->hidden && !wp->visible)
845 FILE *f = context->file;
847 gchar s_lat[COORDS_STR_BUFFER_SIZE];
848 gchar s_lon[COORDS_STR_BUFFER_SIZE];
850 vik_coord_to_latlon ( &(wp->coord), &ll );
851 a_coords_dtostr_buffer ( ll.lat, s_lat );
852 a_coords_dtostr_buffer ( ll.lon, s_lon );
853 // NB 'hidden' is not part of any GPX standard - this appears to be a made up Viking 'extension'
854 // luckily most other GPX processing software ignores things they don't understand
855 fprintf ( f, "<wpt lat=\"%s\" lon=\"%s\"%s>\n",
856 s_lat, s_lon, wp->visible ? "" : " hidden=\"hidden\"" );
860 tmp = entitize ( wp->name );
862 tmp = g_strdup ("waypoint");
864 fprintf ( f, " <name>%s</name>\n", tmp );
867 if ( wp->altitude != VIK_DEFAULT_ALTITUDE )
869 gchar s_alt[COORDS_STR_BUFFER_SIZE];
870 a_coords_dtostr_buffer ( wp->altitude, s_alt );
871 fprintf ( f, " <ele>%s</ele>\n", s_alt );
874 if ( wp->has_timestamp ) {
876 timestamp.tv_sec = wp->timestamp;
877 timestamp.tv_usec = 0;
879 gchar *time_iso8601 = g_time_val_to_iso8601 ( ×tamp );
880 if ( time_iso8601 != NULL )
881 fprintf ( f, " <time>%s</time>\n", time_iso8601 );
882 g_free ( time_iso8601 );
887 tmp = entitize(wp->comment);
888 fprintf ( f, " <cmt>%s</cmt>\n", tmp );
891 if ( wp->description )
893 tmp = entitize(wp->description);
894 fprintf ( f, " <desc>%s</desc>\n", tmp );
899 tmp = entitize(wp->source);
900 fprintf ( f, " <src>%s</src>\n", tmp );
905 tmp = entitize(wp->type);
906 fprintf ( f, " <type>%s</type>\n", tmp );
911 tmp = entitize(wp->url);
912 fprintf ( f, " <url>%s</url>\n", tmp );
917 tmp = entitize(wp->image);
918 fprintf ( f, " <link>%s</link>\n", tmp );
923 tmp = entitize(wp->symbol);
924 if ( a_vik_gpx_export_wpt_sym_name ( ) ) {
925 // Lowercase the symbol name
926 gchar *tmp2 = g_utf8_strdown ( tmp, -1 );
927 fprintf ( f, " <sym>%s</sym>\n", tmp2 );
931 fprintf ( f, " <sym>%s</sym>\n", tmp);
935 fprintf ( f, "</wpt>\n" );
938 static void gpx_write_trackpoint ( VikTrackpoint *tp, GpxWritingContext *context )
940 FILE *f = context->file;
942 gchar s_lat[COORDS_STR_BUFFER_SIZE];
943 gchar s_lon[COORDS_STR_BUFFER_SIZE];
944 gchar s_alt[COORDS_STR_BUFFER_SIZE];
945 gchar s_dop[COORDS_STR_BUFFER_SIZE];
947 vik_coord_to_latlon ( &(tp->coord), &ll );
949 // No such thing as a rteseg! So make sure we don't put them in
950 if ( context->options && !context->options->is_route && tp->newsegment )
951 fprintf ( f, " </trkseg>\n <trkseg>\n" );
953 a_coords_dtostr_buffer ( ll.lat, s_lat );
954 a_coords_dtostr_buffer ( ll.lon, s_lon );
955 fprintf ( f, " <%spt lat=\"%s\" lon=\"%s\">\n", (context->options && context->options->is_route) ? "rte" : "trk", s_lat, s_lon );
958 gchar *s_name = entitize(tp->name);
959 fprintf ( f, " <name>%s</name>\n", s_name );
963 if ( tp->altitude != VIK_DEFAULT_ALTITUDE )
965 a_coords_dtostr_buffer ( tp->altitude, s_alt );
966 fprintf ( f, " <ele>%s</ele>\n", s_alt );
968 else if ( context->options != NULL && context->options->force_ele )
970 fprintf ( f, " <ele>0</ele>\n" );
974 if ( tp->has_timestamp ) {
976 timestamp.tv_sec = tp->timestamp;
977 timestamp.tv_usec = 0;
979 time_iso8601 = g_time_val_to_iso8601 ( ×tamp );
981 else if ( context->options != NULL && context->options->force_time )
984 g_get_current_time ( ¤t );
986 time_iso8601 = g_time_val_to_iso8601 ( ¤t );
988 if ( time_iso8601 != NULL )
989 fprintf ( f, " <time>%s</time>\n", time_iso8601 );
990 g_free(time_iso8601);
993 if (!isnan(tp->course)) {
994 gchar s_course[COORDS_STR_BUFFER_SIZE];
995 a_coords_dtostr_buffer ( tp->course, s_course );
996 fprintf ( f, " <course>%s</course>\n", s_course );
998 if (!isnan(tp->speed)) {
999 gchar s_speed[COORDS_STR_BUFFER_SIZE];
1000 a_coords_dtostr_buffer ( tp->speed, s_speed );
1001 fprintf ( f, " <speed>%s</speed>\n", s_speed );
1003 if (tp->fix_mode == VIK_GPS_MODE_2D)
1004 fprintf ( f, " <fix>2d</fix>\n");
1005 if (tp->fix_mode == VIK_GPS_MODE_3D)
1006 fprintf ( f, " <fix>3d</fix>\n");
1007 if (tp->fix_mode == VIK_GPS_MODE_DGPS)
1008 fprintf ( f, " <fix>dgps</fix>\n");
1009 if (tp->fix_mode == VIK_GPS_MODE_PPS)
1010 fprintf ( f, " <fix>pps</fix>\n");
1012 fprintf ( f, " <sat>%d</sat>\n", tp->nsats );
1014 if ( tp->hdop != VIK_DEFAULT_DOP ) {
1015 a_coords_dtostr_buffer ( tp->hdop, s_dop );
1016 fprintf ( f, " <hdop>%s</hdop>\n", s_dop );
1019 if ( tp->vdop != VIK_DEFAULT_DOP ) {
1020 a_coords_dtostr_buffer ( tp->vdop, s_dop );
1021 fprintf ( f, " <vdop>%s</vdop>\n", s_dop );
1024 if ( tp->pdop != VIK_DEFAULT_DOP ) {
1025 a_coords_dtostr_buffer ( tp->pdop, s_dop );
1026 fprintf ( f, " <pdop>%s</pdop>\n", s_dop );
1029 fprintf ( f, " </%spt>\n", (context->options && context->options->is_route) ? "rte" : "trk" );
1033 static void gpx_write_track ( VikTrack *t, GpxWritingContext *context )
1035 // Don't write invisible tracks when specified
1036 if (context->options && !context->options->hidden && !t->visible)
1039 FILE *f = context->file;
1041 gboolean first_tp_is_newsegment = FALSE; /* must temporarily make it not so, but we want to restore state. not that it matters. */
1045 tmp = entitize ( t->name );
1047 tmp = g_strdup ("track");
1049 // NB 'hidden' is not part of any GPX standard - this appears to be a made up Viking 'extension'
1050 // luckily most other GPX processing software ignores things they don't understand
1051 fprintf ( f, "<%s%s>\n <name>%s</name>\n",
1052 t->is_route ? "rte" : "trk",
1053 t->visible ? "" : " hidden=\"hidden\"",
1059 tmp = entitize ( t->comment );
1060 fprintf ( f, " <cmt>%s</cmt>\n", tmp );
1064 if ( t->description )
1066 tmp = entitize ( t->description );
1067 fprintf ( f, " <desc>%s</desc>\n", tmp );
1073 tmp = entitize ( t->source );
1074 fprintf ( f, " <src>%s</src>\n", tmp );
1080 tmp = entitize ( t->type );
1081 fprintf ( f, " <type>%s</type>\n", tmp );
1085 /* No such thing as a rteseg! */
1087 fprintf ( f, " <trkseg>\n" );
1089 if ( t->trackpoints && t->trackpoints->data ) {
1090 first_tp_is_newsegment = VIK_TRACKPOINT(t->trackpoints->data)->newsegment;
1091 VIK_TRACKPOINT(t->trackpoints->data)->newsegment = FALSE; /* so we won't write </trkseg><trkseg> already */
1092 g_list_foreach ( t->trackpoints, (GFunc) gpx_write_trackpoint, context );
1093 VIK_TRACKPOINT(t->trackpoints->data)->newsegment = first_tp_is_newsegment; /* restore state */
1096 /* NB apparently no such thing as a rteseg! */
1098 fprintf ( f, " </trkseg>\n");
1100 fprintf ( f, "</%s>\n", t->is_route ? "rte" : "trk" );
1103 static void gpx_write_header( FILE *f )
1105 fprintf(f, "<?xml version=\"1.0\"?>\n"
1106 "<gpx version=\"1.0\" creator=\"Viking -- http://viking.sf.net/\"\n"
1107 "xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n"
1108 "xmlns=\"http://www.topografix.com/GPX/1/0\"\n"
1109 "xsi:schemaLocation=\"http://www.topografix.com/GPX/1/0 http://www.topografix.com/GPX/1/0/gpx.xsd\">\n");
1112 static void gpx_write_footer( FILE *f )
1114 fprintf(f, "</gpx>\n");
1117 static int gpx_waypoint_compare(const void *x, const void *y)
1119 VikWaypoint *a = (VikWaypoint *)x;
1120 VikWaypoint *b = (VikWaypoint *)y;
1121 return strcmp(a->name,b->name);
1124 static int gpx_track_compare_name(const void *x, const void *y)
1126 VikTrack *a = (VikTrack *)x;
1127 VikTrack *b = (VikTrack *)y;
1128 return strcmp(a->name,b->name);
1131 void a_gpx_write_file ( VikTrwLayer *vtl, FILE *f, GpxWritingOptions *options )
1133 GpxWritingContext context = { options, f };
1135 gpx_write_header ( f );
1138 const gchar *name = vik_layer_get_name(VIK_LAYER(vtl));
1140 tmp = entitize ( name );
1141 fprintf ( f, " <name>%s</name>\n", tmp );
1145 VikTRWMetadata *md = vik_trw_layer_get_metadata (vtl);
1147 if ( md->author && strlen(md->author) > 0 ) {
1148 tmp = entitize ( md->author );
1149 fprintf ( f, " <author>%s</author>\n", tmp );
1152 if ( md->description && strlen(md->description) > 0) {
1153 tmp = entitize ( md->description );
1154 fprintf ( f, " <desc>%s</desc>\n", tmp );
1157 if ( md->timestamp ) {
1158 tmp = entitize ( md->timestamp );
1159 fprintf ( f, " <time>%s</time>\n", tmp );
1162 if ( md->keywords && strlen(md->keywords) > 0) {
1163 tmp = entitize ( md->keywords );
1164 fprintf ( f, " <keywords>%s</keywords>\n", tmp );
1169 if ( vik_trw_layer_get_waypoints_visibility(vtl) || (options && options->hidden) ) {
1170 // gather waypoints in a list, then sort
1171 GList *gl = g_hash_table_get_values ( vik_trw_layer_get_waypoints ( vtl ) );
1172 gl = g_list_sort ( gl, gpx_waypoint_compare );
1174 for (GList *iter = g_list_first (gl); iter != NULL; iter = g_list_next (iter)) {
1175 gpx_write_waypoint ( (VikWaypoint*)iter->data, &context );
1181 if ( vik_trw_layer_get_tracks_visibility(vtl) || (options && options->hidden) ) {
1182 //gl = g_hash_table_get_values ( vik_trw_layer_get_tracks ( vtl ) );
1183 // Forming the list manually seems to produce one that is more likely to be nearer to the creation order
1184 gpointer key, value;
1185 GHashTableIter ght_iter;
1186 g_hash_table_iter_init ( &ght_iter, vik_trw_layer_get_tracks ( vtl ) );
1187 while ( g_hash_table_iter_next (&ght_iter, &key, &value) ) {
1188 gl = g_list_prepend ( gl ,value );
1190 gl = g_list_reverse ( gl );
1192 // Sort method determined by preference
1193 if ( a_vik_get_gpx_export_trk_sort() == VIK_GPX_EXPORT_TRK_SORT_TIME )
1194 gl = g_list_sort ( gl, vik_track_compare_timestamp );
1195 else if ( a_vik_get_gpx_export_trk_sort() == VIK_GPX_EXPORT_TRK_SORT_ALPHA )
1196 gl = g_list_sort ( gl, gpx_track_compare_name );
1199 GList *glrte = NULL;
1200 // Routes sorted by name
1201 if ( vik_trw_layer_get_routes_visibility(vtl) || (options && options->hidden) ) {
1202 glrte = g_hash_table_get_values ( vik_trw_layer_get_routes ( vtl ) );
1203 glrte = g_list_sort ( glrte, gpx_track_compare_name );
1206 // g_list_concat doesn't copy memory properly
1207 // so process each list separately
1209 GpxWritingContext context_tmp = context;
1210 GpxWritingOptions opt_tmp = { FALSE, FALSE, FALSE, FALSE };
1211 // Force trackpoints on tracks
1212 if ( !context.options )
1213 context_tmp.options = &opt_tmp;
1214 context_tmp.options->is_route = FALSE;
1216 // Loop around each list and write each one
1217 for (GList *iter = g_list_first (gl); iter != NULL; iter = g_list_next (iter)) {
1218 gpx_write_track ( (VikTrack*)iter->data, &context_tmp );
1221 // Routes (to get routepoints)
1222 context_tmp.options->is_route = TRUE;
1223 for (GList *iter = g_list_first (glrte); iter != NULL; iter = g_list_next (iter)) {
1224 gpx_write_track ( (VikTrack*)iter->data, &context_tmp );
1228 g_list_free ( glrte );
1230 gpx_write_footer ( f );
1233 void a_gpx_write_track_file ( VikTrack *trk, FILE *f, GpxWritingOptions *options )
1235 GpxWritingContext context = {options, f};
1236 gpx_write_header ( f );
1237 gpx_write_track ( trk, &context );
1238 gpx_write_footer ( f );
1242 * Common write of a temporary GPX file
1244 static gchar* write_tmp_file ( VikTrwLayer *vtl, VikTrack *trk, GpxWritingOptions *options )
1246 gchar *tmp_filename = NULL;
1247 GError *error = NULL;
1248 // Opening temporary file
1249 int fd = g_file_open_tmp("viking_XXXXXX.gpx", &tmp_filename, &error);
1251 g_warning ( _("failed to open temporary file: %s"), error->message );
1252 g_clear_error ( &error );
1255 g_debug ("%s: temporary file = %s", __FUNCTION__, tmp_filename);
1257 FILE *ff = fdopen (fd, "w");
1260 a_gpx_write_track_file ( trk, ff, options );
1262 a_gpx_write_file ( vtl, ff, options );
1266 return tmp_filename;
1270 * a_gpx_write_tmp_file:
1271 * @vtl: The #VikTrwLayer to write
1272 * @options: Possible ways of writing the file data (can be NULL)
1274 * Returns: The name of newly created temporary GPX file
1275 * This file should be removed once used and the string freed.
1276 * If NULL then the process failed.
1278 gchar* a_gpx_write_tmp_file ( VikTrwLayer *vtl, GpxWritingOptions *options )
1280 return write_tmp_file ( vtl, NULL, options );
1284 * a_gpx_write_track_tmp_file:
1285 * @trk: The #VikTrack to write
1286 * @options: Possible ways of writing the file data (can be NULL)
1288 * Returns: The name of newly created temporary GPX file
1289 * This file should be removed once used and the string freed.
1290 * If NULL then the process failed.
1292 gchar* a_gpx_write_track_tmp_file ( VikTrack *trk, GpxWritingOptions *options )
1294 return write_tmp_file ( NULL, trk, options );