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Commit | Line | Data |
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8c4f1350 EB |
1 | /* |
2 | * viking -- GPS Data and Topo Analyzer, Explorer, and Manager | |
3 | * | |
4 | * Copyright (C) 2003-2005, Evan Battaglia <gtoevan@gmx.net> | |
5 | * | |
bf35388d EB |
6 | * Some of the code adapted from GPSBabel 1.2.7 |
7 | * http://gpsbabel.sf.net/ | |
8 | * Copyright (C) 2002, 2003, 2004, 2005 Robert Lipe, robertlipe@usa.net | |
9 | * | |
8c4f1350 EB |
10 | * This program is free software; you can redistribute it and/or modify |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or | |
13 | * (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
23 | * | |
24 | */ | |
8c00358d GB |
25 | #ifdef HAVE_CONFIG_H |
26 | #include "config.h" | |
27 | #endif | |
8c4f1350 EB |
28 | |
29 | #define _XOPEN_SOURCE /* glibc2 needs this */ | |
30 | ||
0b72c435 | 31 | #include "gpx.h" |
8c4f1350 EB |
32 | #include "viking.h" |
33 | #include <expat.h> | |
8c00358d | 34 | #ifdef HAVE_STRING_H |
8c4f1350 | 35 | #include <string.h> |
8c00358d | 36 | #endif |
8904c540 | 37 | #include <glib.h> |
8c00358d | 38 | #ifdef HAVE_MATH_H |
8904c540 | 39 | #include <math.h> |
8c00358d | 40 | #endif |
e3449376 | 41 | #include <time.h> |
8c4f1350 | 42 | |
8c4f1350 EB |
43 | typedef enum { |
44 | tt_unknown = 0, | |
45 | ||
46 | tt_gpx, | |
47 | ||
48 | tt_wpt, | |
49 | tt_wpt_desc, | |
50 | tt_wpt_name, | |
51 | tt_wpt_ele, | |
42c2ac3e | 52 | tt_wpt_sym, |
8c4f1350 EB |
53 | tt_wpt_link, /* New in GPX 1.1 */ |
54 | ||
55 | tt_trk, | |
56 | tt_trk_desc, | |
57 | tt_trk_name, | |
58 | ||
59 | tt_trk_trkseg, | |
60 | tt_trk_trkseg_trkpt, | |
61 | tt_trk_trkseg_trkpt_ele, | |
62 | tt_trk_trkseg_trkpt_time, | |
a2817d3c QT |
63 | /* extended */ |
64 | tt_trk_trkseg_trkpt_course, | |
65 | tt_trk_trkseg_trkpt_speed, | |
66 | tt_trk_trkseg_trkpt_fix, | |
67 | tt_trk_trkseg_trkpt_sat, | |
bf35388d | 68 | |
4a42b254 T |
69 | tt_trk_trkseg_trkpt_hdop, |
70 | tt_trk_trkseg_trkpt_vdop, | |
71 | tt_trk_trkseg_trkpt_pdop, | |
72 | ||
bf35388d EB |
73 | tt_waypoint, |
74 | tt_waypoint_coord, | |
75 | tt_waypoint_name, | |
8c4f1350 EB |
76 | } tag_type; |
77 | ||
78 | typedef struct tag_mapping { | |
79 | tag_type tag_type; /* enum from above for this tag */ | |
80 | const char *tag_name; /* xpath-ish tag name */ | |
81 | } tag_mapping; | |
82 | ||
0b72c435 OK |
83 | typedef struct { |
84 | GpxWritingOptions *options; | |
85 | FILE *file; | |
86 | } GpxWritingContext; | |
87 | ||
8c4f1350 EB |
88 | /* |
89 | * xpath(ish) mappings between full tag paths and internal identifers. | |
90 | * These appear in the order they appear in the GPX specification. | |
91 | * If it's not a tag we explictly handle, it doesn't go here. | |
92 | */ | |
93 | ||
94 | tag_mapping tag_path_map[] = { | |
8c4f1350 EB |
95 | |
96 | { tt_wpt, "/gpx/wpt" }, | |
bf35388d EB |
97 | |
98 | { tt_waypoint, "/loc/waypoint" }, | |
99 | { tt_waypoint_coord, "/loc/waypoint/coord" }, | |
100 | { tt_waypoint_name, "/loc/waypoint/name" }, | |
101 | ||
8c4f1350 EB |
102 | { tt_wpt_ele, "/gpx/wpt/ele" }, |
103 | { tt_wpt_name, "/gpx/wpt/name" }, | |
104 | { tt_wpt_desc, "/gpx/wpt/desc" }, | |
42c2ac3e | 105 | { tt_wpt_sym, "/gpx/wpt/sym" }, |
08b251ec | 106 | { tt_wpt_sym, "/loc/waypoint/type" }, |
8c4f1350 EB |
107 | { tt_wpt_link, "/gpx/wpt/link" }, /* GPX 1.1 */ |
108 | ||
109 | { tt_trk, "/gpx/trk" }, | |
561e6ad0 | 110 | { tt_trk, "/gpx/rte" }, |
8c4f1350 EB |
111 | { tt_trk_name, "/gpx/trk/name" }, |
112 | { tt_trk_desc, "/gpx/trk/desc" }, | |
113 | { tt_trk_trkseg, "/gpx/trk/trkseg" }, | |
8c4f1350 | 114 | { tt_trk_trkseg_trkpt, "/gpx/trk/trkseg/trkpt" }, |
561e6ad0 | 115 | { tt_trk_trkseg_trkpt, "/gpx/rte/rtept" }, |
8c4f1350 EB |
116 | { tt_trk_trkseg_trkpt_ele, "/gpx/trk/trkseg/trkpt/ele" }, |
117 | { tt_trk_trkseg_trkpt_time, "/gpx/trk/trkseg/trkpt/time" }, | |
a2817d3c QT |
118 | /* extended */ |
119 | { tt_trk_trkseg_trkpt_course, "/gpx/trk/trkseg/trkpt/course" }, | |
120 | { tt_trk_trkseg_trkpt_speed, "/gpx/trk/trkseg/trkpt/speed" }, | |
121 | { tt_trk_trkseg_trkpt_fix, "/gpx/trk/trkseg/trkpt/fix" }, | |
122 | { tt_trk_trkseg_trkpt_sat, "/gpx/trk/trkseg/trkpt/sat" }, | |
8c4f1350 | 123 | |
4a42b254 T |
124 | { tt_trk_trkseg_trkpt_hdop, "/gpx/trk/trkseg/trkpt/hdop" }, |
125 | { tt_trk_trkseg_trkpt_vdop, "/gpx/trk/trkseg/trkpt/vdop" }, | |
126 | { tt_trk_trkseg_trkpt_pdop, "/gpx/trk/trkseg/trkpt/pdop" }, | |
8c4f1350 EB |
127 | {0} |
128 | }; | |
129 | ||
130 | static tag_type get_tag(const char *t) | |
131 | { | |
132 | tag_mapping *tm; | |
133 | for (tm = tag_path_map; tm->tag_type != 0; tm++) | |
134 | if (0 == strcmp(tm->tag_name, t)) | |
135 | return tm->tag_type; | |
136 | return tt_unknown; | |
137 | } | |
138 | ||
139 | /******************************************/ | |
140 | ||
141 | tag_type current_tag = tt_unknown; | |
142 | GString *xpath = NULL; | |
143 | GString *c_cdata = NULL; | |
144 | ||
145 | /* current ("c_") objects */ | |
146 | VikTrackpoint *c_tp = NULL; | |
147 | VikWaypoint *c_wp = NULL; | |
148 | VikTrack *c_tr = NULL; | |
149 | ||
150 | gchar *c_wp_name = NULL; | |
151 | gchar *c_tr_name = NULL; | |
152 | ||
153 | /* temporary things so we don't have to create them lots of times */ | |
154 | const gchar *c_slat, *c_slon; | |
155 | struct LatLon c_ll; | |
156 | ||
157 | /* specialty flags / etc */ | |
158 | gboolean f_tr_newseg; | |
159 | guint unnamed_waypoints = 0; | |
160 | guint unnamed_tracks = 0; | |
161 | ||
162 | ||
163 | static const char *get_attr ( const char **attr, const char *key ) | |
164 | { | |
165 | while ( *attr ) { | |
166 | if ( strcmp(*attr,key) == 0 ) | |
167 | return *(attr + 1); | |
168 | attr += 2; | |
169 | } | |
170 | return NULL; | |
171 | } | |
172 | ||
173 | static gboolean set_c_ll ( const char **attr ) | |
174 | { | |
175 | if ( (c_slat = get_attr ( attr, "lat" )) && (c_slon = get_attr ( attr, "lon" )) ) { | |
d1cd12c0 T |
176 | c_ll.lat = g_ascii_strtod(c_slat, NULL); |
177 | c_ll.lon = g_ascii_strtod(c_slon, NULL); | |
8c4f1350 EB |
178 | return TRUE; |
179 | } | |
180 | return FALSE; | |
181 | } | |
182 | ||
183 | static void gpx_start(VikTrwLayer *vtl, const char *el, const char **attr) | |
184 | { | |
bf35388d EB |
185 | static const gchar *tmp; |
186 | ||
8c4f1350 EB |
187 | g_string_append_c ( xpath, '/' ); |
188 | g_string_append ( xpath, el ); | |
189 | current_tag = get_tag ( xpath->str ); | |
190 | ||
191 | switch ( current_tag ) { | |
192 | ||
193 | case tt_wpt: | |
194 | if ( set_c_ll( attr ) ) { | |
195 | c_wp = vik_waypoint_new (); | |
8c4f1350 EB |
196 | if ( ! get_attr ( attr, "hidden" ) ) |
197 | c_wp->visible = TRUE; | |
198 | ||
199 | vik_coord_load_from_latlon ( &(c_wp->coord), vik_trw_layer_get_coord_mode ( vtl ), &c_ll ); | |
200 | } | |
201 | break; | |
202 | ||
203 | case tt_trk: | |
204 | c_tr = vik_track_new (); | |
205 | if ( ! get_attr ( attr, "hidden" ) ) | |
206 | c_tr->visible = TRUE; | |
207 | break; | |
208 | ||
209 | case tt_trk_trkseg: | |
210 | f_tr_newseg = TRUE; | |
211 | break; | |
212 | ||
213 | case tt_trk_trkseg_trkpt: | |
214 | if ( set_c_ll( attr ) ) { | |
215 | c_tp = vik_trackpoint_new (); | |
8c4f1350 EB |
216 | vik_coord_load_from_latlon ( &(c_tp->coord), vik_trw_layer_get_coord_mode ( vtl ), &c_ll ); |
217 | if ( f_tr_newseg ) { | |
218 | c_tp->newsegment = TRUE; | |
219 | f_tr_newseg = FALSE; | |
220 | } | |
221 | c_tr->trackpoints = g_list_append ( c_tr->trackpoints, c_tp ); | |
222 | } | |
223 | break; | |
224 | ||
225 | case tt_trk_trkseg_trkpt_ele: | |
226 | case tt_trk_trkseg_trkpt_time: | |
227 | case tt_wpt_desc: | |
228 | case tt_wpt_name: | |
229 | case tt_wpt_ele: | |
230 | case tt_wpt_link: | |
231 | case tt_trk_desc: | |
232 | case tt_trk_name: | |
233 | g_string_erase ( c_cdata, 0, -1 ); /* clear the cdata buffer */ | |
bf35388d | 234 | break; |
8c4f1350 | 235 | |
bf35388d EB |
236 | case tt_waypoint: |
237 | c_wp = vik_waypoint_new (); | |
bf35388d EB |
238 | c_wp->visible = TRUE; |
239 | break; | |
240 | ||
241 | case tt_waypoint_coord: | |
242 | if ( set_c_ll( attr ) ) | |
243 | vik_coord_load_from_latlon ( &(c_wp->coord), vik_trw_layer_get_coord_mode ( vtl ), &c_ll ); | |
244 | break; | |
245 | ||
246 | case tt_waypoint_name: | |
247 | if ( ( tmp = get_attr(attr, "id") ) ) { | |
248 | if ( c_wp_name ) | |
249 | g_free ( c_wp_name ); | |
250 | c_wp_name = g_strdup ( tmp ); | |
251 | } | |
252 | g_string_erase ( c_cdata, 0, -1 ); /* clear the cdata buffer for description */ | |
253 | break; | |
254 | ||
8c4f1350 EB |
255 | default: break; |
256 | } | |
257 | } | |
258 | ||
259 | static void gpx_end(VikTrwLayer *vtl, const char *el) | |
260 | { | |
dd81e762 GB |
261 | static GTimeVal tp_time; |
262 | ||
8c4f1350 EB |
263 | g_string_truncate ( xpath, xpath->len - strlen(el) - 1 ); |
264 | ||
265 | switch ( current_tag ) { | |
266 | ||
bf35388d | 267 | case tt_waypoint: |
8c4f1350 EB |
268 | case tt_wpt: |
269 | if ( ! c_wp_name ) | |
270 | c_wp_name = g_strdup_printf("VIKING_WP%d", unnamed_waypoints++); | |
805d282e EB |
271 | vik_trw_layer_filein_add_waypoint ( vtl, c_wp_name, c_wp ); |
272 | g_free ( c_wp_name ); | |
8c4f1350 EB |
273 | c_wp = NULL; |
274 | c_wp_name = NULL; | |
275 | break; | |
276 | ||
277 | case tt_trk: | |
278 | if ( ! c_tr_name ) | |
279 | c_tr_name = g_strdup_printf("VIKING_TR%d", unnamed_waypoints++); | |
805d282e EB |
280 | vik_trw_layer_filein_add_track ( vtl, c_tr_name, c_tr ); |
281 | g_free ( c_tr_name ); | |
8c4f1350 EB |
282 | c_tr = NULL; |
283 | c_tr_name = NULL; | |
284 | break; | |
285 | ||
286 | case tt_wpt_name: | |
287 | if ( c_wp_name ) | |
288 | g_free ( c_wp_name ); | |
289 | c_wp_name = g_strdup ( c_cdata->str ); | |
290 | g_string_erase ( c_cdata, 0, -1 ); | |
291 | break; | |
292 | ||
293 | case tt_trk_name: | |
294 | if ( c_tr_name ) | |
295 | g_free ( c_tr_name ); | |
296 | c_tr_name = g_strdup ( c_cdata->str ); | |
297 | g_string_erase ( c_cdata, 0, -1 ); | |
298 | break; | |
299 | ||
300 | case tt_wpt_ele: | |
d1cd12c0 | 301 | c_wp->altitude = g_ascii_strtod ( c_cdata->str, NULL ); |
8c4f1350 EB |
302 | g_string_erase ( c_cdata, 0, -1 ); |
303 | break; | |
304 | ||
305 | case tt_trk_trkseg_trkpt_ele: | |
d1cd12c0 | 306 | c_tp->altitude = g_ascii_strtod ( c_cdata->str, NULL ); |
8c4f1350 EB |
307 | g_string_erase ( c_cdata, 0, -1 ); |
308 | break; | |
309 | ||
bf35388d | 310 | case tt_waypoint_name: /* .loc name is really description. */ |
8c4f1350 EB |
311 | case tt_wpt_desc: |
312 | vik_waypoint_set_comment ( c_wp, c_cdata->str ); | |
313 | g_string_erase ( c_cdata, 0, -1 ); | |
314 | break; | |
315 | ||
316 | case tt_wpt_link: | |
317 | vik_waypoint_set_image ( c_wp, c_cdata->str ); | |
318 | g_string_erase ( c_cdata, 0, -1 ); | |
319 | break; | |
320 | ||
ea3933fc EB |
321 | case tt_wpt_sym: { |
322 | gchar *tmp_lower = g_utf8_strdown(c_cdata->str, -1); /* for things like <type>Geocache</type> */ | |
323 | vik_waypoint_set_symbol ( c_wp, tmp_lower ); | |
324 | g_free ( tmp_lower ); | |
42c2ac3e AF |
325 | g_string_erase ( c_cdata, 0, -1 ); |
326 | break; | |
ea3933fc | 327 | } |
42c2ac3e | 328 | |
8c4f1350 EB |
329 | case tt_trk_desc: |
330 | vik_track_set_comment ( c_tr, c_cdata->str ); | |
331 | g_string_erase ( c_cdata, 0, -1 ); | |
332 | break; | |
333 | ||
334 | case tt_trk_trkseg_trkpt_time: | |
dd81e762 GB |
335 | if ( g_time_val_from_iso8601(c_cdata->str, &tp_time) ) { |
336 | c_tp->timestamp = tp_time.tv_sec; | |
8c4f1350 EB |
337 | c_tp->has_timestamp = TRUE; |
338 | } | |
339 | g_string_erase ( c_cdata, 0, -1 ); | |
bf35388d | 340 | break; |
8c4f1350 | 341 | |
a2817d3c | 342 | case tt_trk_trkseg_trkpt_course: |
d1cd12c0 | 343 | c_tp->course = g_ascii_strtod ( c_cdata->str, NULL ); |
a2817d3c QT |
344 | g_string_erase ( c_cdata, 0, -1 ); |
345 | break; | |
346 | ||
347 | case tt_trk_trkseg_trkpt_speed: | |
d1cd12c0 | 348 | c_tp->speed = g_ascii_strtod ( c_cdata->str, NULL ); |
a2817d3c QT |
349 | g_string_erase ( c_cdata, 0, -1 ); |
350 | break; | |
351 | ||
352 | case tt_trk_trkseg_trkpt_fix: | |
a2817d3c QT |
353 | if (!strcmp("2d", c_cdata->str)) |
354 | c_tp->fix_mode = VIK_GPS_MODE_2D; | |
355 | else if (!strcmp("3d", c_cdata->str)) | |
356 | c_tp->fix_mode = VIK_GPS_MODE_3D; | |
357 | else /* TODO: more fix modes here */ | |
358 | c_tp->fix_mode = VIK_GPS_MODE_NOT_SEEN; | |
359 | g_string_erase ( c_cdata, 0, -1 ); | |
360 | break; | |
361 | ||
362 | case tt_trk_trkseg_trkpt_sat: | |
a2817d3c QT |
363 | c_tp->nsats = atoi ( c_cdata->str ); |
364 | g_string_erase ( c_cdata, 0, -1 ); | |
365 | break; | |
366 | ||
4a42b254 | 367 | case tt_trk_trkseg_trkpt_hdop: |
4a42b254 T |
368 | c_tp->hdop = g_strtod ( c_cdata->str, NULL ); |
369 | g_string_erase ( c_cdata, 0, -1 ); | |
370 | break; | |
371 | ||
372 | case tt_trk_trkseg_trkpt_vdop: | |
4a42b254 T |
373 | c_tp->vdop = g_strtod ( c_cdata->str, NULL ); |
374 | g_string_erase ( c_cdata, 0, -1 ); | |
375 | break; | |
376 | ||
377 | case tt_trk_trkseg_trkpt_pdop: | |
4a42b254 T |
378 | c_tp->pdop = g_strtod ( c_cdata->str, NULL ); |
379 | g_string_erase ( c_cdata, 0, -1 ); | |
380 | break; | |
381 | ||
8c4f1350 EB |
382 | default: break; |
383 | } | |
384 | ||
385 | current_tag = get_tag ( xpath->str ); | |
386 | } | |
387 | ||
388 | static void gpx_cdata(void *dta, const XML_Char *s, int len) | |
389 | { | |
390 | switch ( current_tag ) { | |
391 | case tt_wpt_name: | |
392 | case tt_trk_name: | |
393 | case tt_wpt_ele: | |
394 | case tt_trk_trkseg_trkpt_ele: | |
395 | case tt_wpt_desc: | |
42c2ac3e | 396 | case tt_wpt_sym: |
8c4f1350 EB |
397 | case tt_wpt_link: |
398 | case tt_trk_desc: | |
399 | case tt_trk_trkseg_trkpt_time: | |
a2817d3c QT |
400 | case tt_trk_trkseg_trkpt_course: |
401 | case tt_trk_trkseg_trkpt_speed: | |
402 | case tt_trk_trkseg_trkpt_fix: | |
403 | case tt_trk_trkseg_trkpt_sat: | |
4a42b254 T |
404 | case tt_trk_trkseg_trkpt_hdop: |
405 | case tt_trk_trkseg_trkpt_vdop: | |
406 | case tt_trk_trkseg_trkpt_pdop: | |
bf35388d | 407 | case tt_waypoint_name: /* .loc name is really description. */ |
8c4f1350 EB |
408 | g_string_append_len ( c_cdata, s, len ); |
409 | break; | |
410 | ||
411 | default: break; /* ignore cdata from other things */ | |
412 | } | |
413 | } | |
414 | ||
415 | // make like a "stack" of tag names | |
416 | // like gpspoint's separated like /gpx/wpt/whatever | |
417 | ||
418 | void a_gpx_read_file( VikTrwLayer *vtl, FILE *f ) { | |
419 | XML_Parser parser = XML_ParserCreate(NULL); | |
420 | int done=0, len; | |
421 | ||
422 | XML_SetElementHandler(parser, (XML_StartElementHandler) gpx_start, (XML_EndElementHandler) gpx_end); | |
423 | XML_SetUserData(parser, vtl); /* in the future we could remove all global variables */ | |
424 | XML_SetCharacterDataHandler(parser, (XML_CharacterDataHandler) gpx_cdata); | |
425 | ||
426 | gchar buf[4096]; | |
427 | ||
bf35388d | 428 | g_assert ( f != NULL && vtl != NULL ); |
8c4f1350 EB |
429 | |
430 | xpath = g_string_new ( "" ); | |
431 | c_cdata = g_string_new ( "" ); | |
432 | ||
433 | unnamed_waypoints = 0; | |
434 | unnamed_tracks = 0; | |
435 | ||
436 | while (!done) { | |
437 | len = fread(buf, 1, sizeof(buf)-7, f); | |
438 | done = feof(f) || !len; | |
439 | XML_Parse(parser, buf, len, done); | |
440 | } | |
441 | ||
6278ccc6 | 442 | XML_ParserFree (parser); |
8c4f1350 EB |
443 | g_string_free ( xpath, TRUE ); |
444 | g_string_free ( c_cdata, TRUE ); | |
445 | } | |
561e6ad0 EB |
446 | |
447 | /**** entitize from GPSBabel ****/ | |
448 | typedef struct { | |
449 | const char * text; | |
450 | const char * entity; | |
451 | int not_html; | |
452 | } entity_types; | |
453 | ||
454 | static | |
455 | entity_types stdentities[] = { | |
456 | { "&", "&", 0 }, | |
457 | { "'", "'", 1 }, | |
458 | { "<", "<", 0 }, | |
459 | { ">", ">", 0 }, | |
460 | { "\"", """, 0 }, | |
461 | { NULL, NULL, 0 } | |
462 | }; | |
463 | ||
464 | void utf8_to_int( const char *cp, int *bytes, int *value ) | |
465 | { | |
466 | if ( (*cp & 0xe0) == 0xc0 ) { | |
467 | if ( (*(cp+1) & 0xc0) != 0x80 ) goto dodefault; | |
468 | *bytes = 2; | |
469 | *value = ((*cp & 0x1f) << 6) | | |
470 | (*(cp+1) & 0x3f); | |
471 | } | |
472 | else if ( (*cp & 0xf0) == 0xe0 ) { | |
473 | if ( (*(cp+1) & 0xc0) != 0x80 ) goto dodefault; | |
474 | if ( (*(cp+2) & 0xc0) != 0x80 ) goto dodefault; | |
475 | *bytes = 3; | |
476 | *value = ((*cp & 0x0f) << 12) | | |
477 | ((*(cp+1) & 0x3f) << 6) | | |
478 | (*(cp+2) & 0x3f); | |
479 | } | |
480 | else if ( (*cp & 0xf8) == 0xf0 ) { | |
481 | if ( (*(cp+1) & 0xc0) != 0x80 ) goto dodefault; | |
482 | if ( (*(cp+2) & 0xc0) != 0x80 ) goto dodefault; | |
483 | if ( (*(cp+3) & 0xc0) != 0x80 ) goto dodefault; | |
484 | *bytes = 4; | |
485 | *value = ((*cp & 0x07) << 18) | | |
486 | ((*(cp+1) & 0x3f) << 12) | | |
487 | ((*(cp+2) & 0x3f) << 6) | | |
488 | (*(cp+3) & 0x3f); | |
489 | } | |
490 | else if ( (*cp & 0xfc) == 0xf8 ) { | |
491 | if ( (*(cp+1) & 0xc0) != 0x80 ) goto dodefault; | |
492 | if ( (*(cp+2) & 0xc0) != 0x80 ) goto dodefault; | |
493 | if ( (*(cp+3) & 0xc0) != 0x80 ) goto dodefault; | |
494 | if ( (*(cp+4) & 0xc0) != 0x80 ) goto dodefault; | |
495 | *bytes = 5; | |
496 | *value = ((*cp & 0x03) << 24) | | |
497 | ((*(cp+1) & 0x3f) << 18) | | |
498 | ((*(cp+2) & 0x3f) << 12) | | |
499 | ((*(cp+3) & 0x3f) << 6) | | |
500 | (*(cp+4) & 0x3f); | |
501 | } | |
502 | else if ( (*cp & 0xfe) == 0xfc ) { | |
503 | if ( (*(cp+1) & 0xc0) != 0x80 ) goto dodefault; | |
504 | if ( (*(cp+2) & 0xc0) != 0x80 ) goto dodefault; | |
505 | if ( (*(cp+3) & 0xc0) != 0x80 ) goto dodefault; | |
506 | if ( (*(cp+4) & 0xc0) != 0x80 ) goto dodefault; | |
507 | if ( (*(cp+5) & 0xc0) != 0x80 ) goto dodefault; | |
508 | *bytes = 6; | |
509 | *value = ((*cp & 0x01) << 30) | | |
510 | ((*(cp+1) & 0x3f) << 24) | | |
511 | ((*(cp+2) & 0x3f) << 18) | | |
512 | ((*(cp+3) & 0x3f) << 12) | | |
513 | ((*(cp+4) & 0x3f) << 6) | | |
514 | (*(cp+5) & 0x3f); | |
515 | } | |
516 | else { | |
517 | dodefault: | |
518 | *bytes = 1; | |
519 | *value = (unsigned char)*cp; | |
520 | } | |
521 | } | |
522 | ||
523 | static | |
524 | char * | |
525 | entitize(const char * str) | |
526 | { | |
527 | int elen, ecount, nsecount; | |
528 | entity_types *ep; | |
529 | const char * cp; | |
530 | char * p, * tmp, * xstr; | |
531 | ||
532 | char tmpsub[20]; | |
533 | int bytes = 0; | |
534 | int value = 0; | |
535 | ep = stdentities; | |
536 | elen = ecount = nsecount = 0; | |
537 | ||
538 | /* figure # of entity replacements and additional size. */ | |
539 | while (ep->text) { | |
540 | cp = str; | |
541 | while ((cp = strstr(cp, ep->text)) != NULL) { | |
542 | elen += strlen(ep->entity) - strlen(ep->text); | |
543 | ecount++; | |
544 | cp += strlen(ep->text); | |
545 | } | |
546 | ep++; | |
547 | } | |
548 | ||
549 | /* figure the same for other than standard entities (i.e. anything | |
550 | * that isn't in the range U+0000 to U+007F */ | |
551 | for ( cp = str; *cp; cp++ ) { | |
552 | if ( *cp & 0x80 ) { | |
553 | ||
554 | utf8_to_int( cp, &bytes, &value ); | |
555 | cp += bytes-1; | |
556 | elen += sprintf( tmpsub, "&#x%x;", value ) - bytes; | |
557 | nsecount++; | |
558 | } | |
559 | } | |
560 | ||
561 | /* enough space for the whole string plus entity replacements, if any */ | |
562 | tmp = g_malloc((strlen(str) + elen + 1)); | |
563 | strcpy(tmp, str); | |
564 | ||
565 | /* no entity replacements */ | |
566 | if (ecount == 0 && nsecount == 0) | |
567 | return (tmp); | |
568 | ||
569 | if ( ecount != 0 ) { | |
570 | for (ep = stdentities; ep->text; ep++) { | |
571 | p = tmp; | |
572 | while ((p = strstr(p, ep->text)) != NULL) { | |
573 | elen = strlen(ep->entity); | |
574 | ||
575 | xstr = g_strdup(p + strlen(ep->text)); | |
576 | ||
577 | strcpy(p, ep->entity); | |
578 | strcpy(p + elen, xstr); | |
579 | ||
580 | g_free(xstr); | |
581 | ||
582 | p += elen; | |
583 | } | |
584 | } | |
585 | } | |
586 | ||
587 | if ( nsecount != 0 ) { | |
588 | p = tmp; | |
589 | while (*p) { | |
590 | if ( *p & 0x80 ) { | |
591 | utf8_to_int( p, &bytes, &value ); | |
592 | if ( p[bytes] ) { | |
593 | xstr = g_strdup( p + bytes ); | |
594 | } | |
595 | else { | |
596 | xstr = NULL; | |
597 | } | |
598 | sprintf( p, "&#x%x;", value ); | |
599 | p = p+strlen(p); | |
600 | if ( xstr ) { | |
601 | strcpy( p, xstr ); | |
602 | g_free(xstr); | |
603 | } | |
604 | } | |
605 | else { | |
606 | p++; | |
607 | } | |
608 | } | |
609 | } | |
610 | return (tmp); | |
611 | } | |
612 | /**** end GPSBabel code ****/ | |
613 | ||
614 | /* export GPX */ | |
8904c540 | 615 | |
0b72c435 | 616 | static void gpx_write_waypoint ( const gchar *name, VikWaypoint *wp, GpxWritingContext *context ) |
561e6ad0 | 617 | { |
0b72c435 | 618 | FILE *f = context->file; |
561e6ad0 | 619 | static struct LatLon ll; |
8904c540 | 620 | gchar *s_lat,*s_lon; |
561e6ad0 EB |
621 | gchar *tmp; |
622 | vik_coord_to_latlon ( &(wp->coord), &ll ); | |
161aa492 EB |
623 | s_lat = a_coords_dtostr( ll.lat ); |
624 | s_lon = a_coords_dtostr( ll.lon ); | |
8904c540 GB |
625 | fprintf ( f, "<wpt lat=\"%s\" lon=\"%s\"%s>\n", |
626 | s_lat, s_lon, wp->visible ? "" : " hidden=\"hidden\"" ); | |
627 | g_free ( s_lat ); | |
628 | g_free ( s_lon ); | |
561e6ad0 EB |
629 | |
630 | tmp = entitize ( name ); | |
631 | fprintf ( f, " <name>%s</name>\n", tmp ); | |
632 | g_free ( tmp); | |
633 | ||
634 | if ( wp->altitude != VIK_DEFAULT_ALTITUDE ) | |
8904c540 | 635 | { |
161aa492 | 636 | tmp = a_coords_dtostr ( wp->altitude ); |
8904c540 GB |
637 | fprintf ( f, " <ele>%s</ele>\n", tmp ); |
638 | g_free ( tmp ); | |
639 | } | |
561e6ad0 EB |
640 | if ( wp->comment ) |
641 | { | |
642 | tmp = entitize(wp->comment); | |
643 | fprintf ( f, " <desc>%s</desc>\n", tmp ); | |
644 | g_free ( tmp ); | |
645 | } | |
646 | if ( wp->image ) | |
647 | { | |
648 | tmp = entitize(wp->image); | |
649 | fprintf ( f, " <link>%s</link>\n", tmp ); | |
650 | g_free ( tmp ); | |
651 | } | |
42c2ac3e AF |
652 | if ( wp->symbol ) |
653 | { | |
654 | tmp = entitize(wp->symbol); | |
655 | fprintf ( f, " <sym>%s</sym>\n", tmp); | |
656 | g_free ( tmp ); | |
657 | } | |
658 | ||
561e6ad0 EB |
659 | fprintf ( f, "</wpt>\n" ); |
660 | } | |
661 | ||
0b72c435 | 662 | static void gpx_write_trackpoint ( VikTrackpoint *tp, GpxWritingContext *context ) |
561e6ad0 | 663 | { |
0b72c435 | 664 | FILE *f = context->file; |
561e6ad0 | 665 | static struct LatLon ll; |
4a42b254 | 666 | gchar *s_lat,*s_lon, *s_alt, *s_dop; |
dd81e762 | 667 | gchar *time_iso8601; |
561e6ad0 EB |
668 | vik_coord_to_latlon ( &(tp->coord), &ll ); |
669 | ||
670 | if ( tp->newsegment ) | |
671 | fprintf ( f, " </trkseg>\n <trkseg>\n" ); | |
672 | ||
161aa492 EB |
673 | s_lat = a_coords_dtostr( ll.lat ); |
674 | s_lon = a_coords_dtostr( ll.lon ); | |
8904c540 | 675 | fprintf ( f, " <trkpt lat=\"%s\" lon=\"%s\">\n", s_lat, s_lon ); |
0b72c435 OK |
676 | g_free ( s_lat ); s_lat = NULL; |
677 | g_free ( s_lon ); s_lon = NULL; | |
561e6ad0 | 678 | |
0b72c435 | 679 | s_alt = NULL; |
561e6ad0 | 680 | if ( tp->altitude != VIK_DEFAULT_ALTITUDE ) |
8904c540 | 681 | { |
161aa492 | 682 | s_alt = a_coords_dtostr ( tp->altitude ); |
8904c540 | 683 | } |
0b72c435 | 684 | else if ( context->options != NULL && context->options->force_ele ) |
36179a2e OK |
685 | { |
686 | s_alt = a_coords_dtostr ( 0 ); | |
687 | } | |
0b72c435 OK |
688 | if (s_alt != NULL) |
689 | fprintf ( f, " <ele>%s</ele>\n", s_alt ); | |
690 | g_free ( s_alt ); s_alt = NULL; | |
36179a2e | 691 | |
dd81e762 | 692 | time_iso8601 = NULL; |
561e6ad0 | 693 | if ( tp->has_timestamp ) { |
dd81e762 GB |
694 | GTimeVal timestamp; |
695 | timestamp.tv_sec = tp->timestamp; | |
61f37ac9 | 696 | timestamp.tv_usec = 0; |
dd81e762 GB |
697 | |
698 | time_iso8601 = g_time_val_to_iso8601 ( ×tamp ); | |
561e6ad0 | 699 | } |
0b72c435 | 700 | else if ( context->options != NULL && context->options->force_time ) |
36179a2e | 701 | { |
dd81e762 GB |
702 | GTimeVal current; |
703 | g_get_current_time ( ¤t ); | |
36179a2e | 704 | |
dd81e762 | 705 | time_iso8601 = g_time_val_to_iso8601 ( ¤t ); |
36179a2e | 706 | } |
dd81e762 GB |
707 | if ( time_iso8601 != NULL ) |
708 | fprintf ( f, " <time>%s</time>\n", time_iso8601 ); | |
709 | g_free(time_iso8601); | |
710 | time_iso8601 = NULL; | |
36179a2e | 711 | |
ad54cd32 T |
712 | if (!isnan(tp->course)) { |
713 | gchar *s_course = a_coords_dtostr(tp->course); | |
714 | fprintf ( f, " <course>%s</course>\n", s_course ); | |
715 | g_free(s_course); | |
a2817d3c | 716 | } |
ad54cd32 T |
717 | if (!isnan(tp->speed)) { |
718 | gchar *s_speed = a_coords_dtostr(tp->speed); | |
719 | fprintf ( f, " <speed>%s</speed>\n", s_speed ); | |
720 | g_free(s_speed); | |
721 | } | |
722 | if (tp->fix_mode == VIK_GPS_MODE_2D) | |
723 | fprintf ( f, " <fix>2d</fix>\n"); | |
724 | if (tp->fix_mode == VIK_GPS_MODE_3D) | |
725 | fprintf ( f, " <fix>3d</fix>\n"); | |
726 | if (tp->nsats > 0) | |
727 | fprintf ( f, " <sat>%d</sat>\n", tp->nsats ); | |
a2817d3c | 728 | |
4a42b254 T |
729 | s_dop = NULL; |
730 | if ( tp->hdop != VIK_DEFAULT_DOP ) | |
731 | { | |
732 | s_dop = a_coords_dtostr ( tp->hdop ); | |
733 | } | |
734 | if (s_dop != NULL) | |
735 | fprintf ( f, " <hdop>%s</hdop>\n", s_dop ); | |
736 | g_free ( s_dop ); s_dop = NULL; | |
737 | ||
738 | if ( tp->vdop != VIK_DEFAULT_DOP ) | |
739 | { | |
740 | s_dop = a_coords_dtostr ( tp->vdop ); | |
741 | } | |
742 | if (s_dop != NULL) | |
743 | fprintf ( f, " <vdop>%s</vdop>\n", s_dop ); | |
744 | g_free ( s_dop ); s_dop = NULL; | |
745 | ||
746 | if ( tp->pdop != VIK_DEFAULT_DOP ) | |
747 | { | |
748 | s_dop = a_coords_dtostr ( tp->pdop ); | |
749 | } | |
750 | if (s_dop != NULL) | |
751 | fprintf ( f, " <pdop>%s</pdop>\n", s_dop ); | |
752 | g_free ( s_dop ); s_dop = NULL; | |
753 | ||
754 | ||
561e6ad0 EB |
755 | fprintf ( f, " </trkpt>\n" ); |
756 | } | |
757 | ||
758 | ||
0b72c435 | 759 | static void gpx_write_track ( const gchar *name, VikTrack *t, GpxWritingContext *context ) |
561e6ad0 | 760 | { |
0b72c435 | 761 | FILE *f = context->file; |
561e6ad0 | 762 | gchar *tmp; |
494eb388 | 763 | gboolean first_tp_is_newsegment = FALSE; /* must temporarily make it not so, but we want to restore state. not that it matters. */ |
561e6ad0 EB |
764 | |
765 | tmp = entitize ( name ); | |
766 | fprintf ( f, "<trk%s>\n <name>%s</name>\n", t->visible ? "" : " hidden=\"hidden\"", tmp ); | |
767 | g_free ( tmp ); | |
768 | ||
769 | if ( t->comment ) | |
770 | { | |
771 | tmp = entitize ( t->comment ); | |
772 | fprintf ( f, " <desc>%s</desc>\n", tmp ); | |
773 | g_free ( tmp ); | |
774 | } | |
775 | ||
776 | fprintf ( f, " <trkseg>\n" ); | |
777 | ||
778 | if ( t->trackpoints && t->trackpoints->data ) { | |
779 | first_tp_is_newsegment = VIK_TRACKPOINT(t->trackpoints->data)->newsegment; | |
780 | VIK_TRACKPOINT(t->trackpoints->data)->newsegment = FALSE; /* so we won't write </trkseg><trkseg> already */ | |
0b72c435 | 781 | g_list_foreach ( t->trackpoints, (GFunc) gpx_write_trackpoint, context ); |
561e6ad0 | 782 | VIK_TRACKPOINT(t->trackpoints->data)->newsegment = first_tp_is_newsegment; /* restore state */ |
494eb388 | 783 | } |
561e6ad0 EB |
784 | |
785 | fprintf ( f, "</trkseg>\n</trk>\n" ); | |
786 | } | |
787 | ||
5092de80 | 788 | static void gpx_write_header( FILE *f ) |
561e6ad0 EB |
789 | { |
790 | fprintf(f, "<?xml version=\"1.0\"?>\n" | |
791 | "<gpx version=\"1.0\" creator=\"Viking -- http://viking.sf.net/\"\n" | |
792 | "xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n" | |
793 | "xmlns=\"http://www.topografix.com/GPX/1/0\"\n" | |
794 | "xsi:schemaLocation=\"http://www.topografix.com/GPX/1/0 http://www.topografix.com/GPX/1/0/gpx.xsd\">\n"); | |
5092de80 GB |
795 | } |
796 | ||
797 | static void gpx_write_footer( FILE *f ) | |
798 | { | |
561e6ad0 | 799 | fprintf(f, "</gpx>\n"); |
5092de80 | 800 | } |
561e6ad0 | 801 | |
eab858a1 EB |
802 | |
803 | ||
804 | typedef struct { | |
805 | VikWaypoint *wp; | |
806 | const gchar *name; | |
807 | } gpx_waypoint_and_name; | |
808 | ||
809 | typedef struct { | |
810 | gpx_waypoint_and_name *wps; | |
811 | guint i; | |
812 | guint n_wps; | |
813 | } gpx_gather_waypoints_passalong_t; | |
814 | ||
e3449376 HR |
815 | /* Type to hold name of track and timestamp of first trackpoint */ |
816 | typedef struct { | |
817 | time_t first_timestamp; | |
818 | const gchar *name; | |
819 | } gpx_track_and_timestamp; | |
820 | ||
821 | typedef struct { | |
822 | gpx_track_and_timestamp *trks; | |
823 | guint i; | |
824 | guint n_trks; | |
825 | } gpx_gather_tracks_passalong_t; | |
826 | ||
eab858a1 EB |
827 | static void gpx_collect_waypoint ( const gchar *name, VikWaypoint *wp, gpx_gather_waypoints_passalong_t *passalong ) |
828 | { | |
829 | if ( passalong->i < passalong->n_wps ) { | |
830 | passalong->wps[passalong->i].name = name; | |
831 | passalong->wps[passalong->i].wp = wp; | |
832 | passalong->i++; | |
833 | } | |
834 | } | |
835 | ||
e3449376 HR |
836 | /* Function to collect a track and the first timestamp in the list */ |
837 | static void gpx_collect_track (const gchar *name, VikTrack *track, gpx_gather_tracks_passalong_t *passalong) | |
838 | { | |
839 | if (passalong->i < passalong->n_trks) | |
840 | { | |
e3449376 | 841 | passalong->trks[passalong->i].name = name; |
72db0d24 GB |
842 | if (track && track->trackpoints && track->trackpoints->data) |
843 | { | |
844 | VikTrackpoint *first_point = (VikTrackpoint *)track->trackpoints->data; | |
845 | passalong->trks[passalong->i].first_timestamp = first_point->timestamp; | |
846 | } | |
847 | else | |
848 | { | |
849 | passalong->trks[passalong->i].first_timestamp = 0; | |
850 | } | |
e3449376 HR |
851 | passalong->i++; |
852 | } | |
853 | } | |
854 | ||
eab858a1 EB |
855 | static int gpx_waypoint_and_name_compar(const void *x, const void *y) |
856 | { | |
857 | gpx_waypoint_and_name *a = (gpx_waypoint_and_name *)x; | |
858 | gpx_waypoint_and_name *b = (gpx_waypoint_and_name *)y; | |
859 | return strcmp(a->name,b->name); | |
860 | } | |
861 | ||
e3449376 HR |
862 | /* Function to compare two tracks by their first timestamp */ |
863 | static int gpx_track_and_timestamp_compar(const void *x, const void *y) | |
864 | { | |
865 | gpx_track_and_timestamp *a = (gpx_track_and_timestamp *)x; | |
866 | gpx_track_and_timestamp *b = (gpx_track_and_timestamp *)y; | |
867 | if (a->first_timestamp < b->first_timestamp) | |
868 | { | |
869 | return -1; | |
870 | } | |
871 | if (a->first_timestamp > b->first_timestamp) | |
872 | { | |
873 | return 1; | |
874 | } | |
875 | return 0; | |
876 | } | |
877 | ||
5092de80 GB |
878 | void a_gpx_write_file( VikTrwLayer *vtl, FILE *f ) |
879 | { | |
0b72c435 OK |
880 | a_gpx_write_file_options(NULL, vtl, f); |
881 | } | |
882 | ||
883 | void a_gpx_write_file_options ( GpxWritingOptions *options, VikTrwLayer *vtl, FILE *f ) | |
884 | { | |
885 | GpxWritingContext context = { options, f }; | |
eab858a1 EB |
886 | int i; |
887 | ||
5092de80 | 888 | gpx_write_header ( f ); |
eab858a1 | 889 | |
0b72c435 | 890 | |
eab858a1 EB |
891 | gpx_gather_waypoints_passalong_t passalong; |
892 | passalong.n_wps = g_hash_table_size ( vik_trw_layer_get_waypoints ( vtl ) ); | |
893 | passalong.i = 0; | |
894 | passalong.wps = g_new(gpx_waypoint_and_name,passalong.n_wps); | |
895 | g_hash_table_foreach ( vik_trw_layer_get_waypoints ( vtl ), (GHFunc) gpx_collect_waypoint, &passalong ); | |
896 | /* gather waypoints in a list, then sort */ | |
897 | qsort(passalong.wps, passalong.n_wps, sizeof(gpx_waypoint_and_name), gpx_waypoint_and_name_compar); | |
898 | for ( i = 0; i < passalong.n_wps; i++ ) | |
0b72c435 | 899 | gpx_write_waypoint ( passalong.wps[i].name, passalong.wps[i].wp, &context); |
eab858a1 EB |
900 | g_free ( passalong.wps ); |
901 | ||
e3449376 HR |
902 | gpx_gather_tracks_passalong_t passalong_tracks; |
903 | passalong_tracks.n_trks = g_hash_table_size ( vik_trw_layer_get_tracks (vtl) ); | |
904 | passalong_tracks.i = 0; | |
905 | passalong_tracks.trks = g_new(gpx_track_and_timestamp,passalong_tracks.n_trks); | |
906 | g_hash_table_foreach (vik_trw_layer_get_tracks(vtl), (GHFunc) gpx_collect_track, &passalong_tracks); | |
907 | /* Sort by timestamp */ | |
908 | qsort(passalong_tracks.trks, passalong_tracks.n_trks, sizeof(gpx_track_and_timestamp), gpx_track_and_timestamp_compar); | |
909 | for (i=0;i<passalong_tracks.n_trks; i++) | |
910 | { | |
911 | gpx_write_track(passalong_tracks.trks[i].name, (VikTrack *)g_hash_table_lookup(vik_trw_layer_get_tracks(vtl), passalong_tracks.trks[i].name), &context); | |
912 | } | |
913 | g_free ( passalong_tracks.trks ); | |
5092de80 GB |
914 | gpx_write_footer ( f ); |
915 | } | |
561e6ad0 | 916 | |
5092de80 GB |
917 | void a_gpx_write_track_file ( const gchar *name, VikTrack *t, FILE *f ) |
918 | { | |
0b72c435 OK |
919 | a_gpx_write_track_file_options ( NULL, name, t, f ); |
920 | } | |
921 | ||
922 | void a_gpx_write_track_file_options ( GpxWritingOptions *options, const gchar *name, VikTrack *t, FILE *f ) | |
923 | { | |
924 | GpxWritingContext context = {options, f}; | |
5092de80 | 925 | gpx_write_header ( f ); |
0b72c435 | 926 | gpx_write_track ( name, t, &context ); |
5092de80 | 927 | gpx_write_footer ( f ); |
561e6ad0 | 928 | } |