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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 | * | |
a482007a GB |
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> | |
8c4f1350 | 8 | * |
bf35388d EB |
9 | * Some of the code adapted from GPSBabel 1.2.7 |
10 | * http://gpsbabel.sf.net/ | |
11 | * Copyright (C) 2002, 2003, 2004, 2005 Robert Lipe, robertlipe@usa.net | |
12 | * | |
8c4f1350 EB |
13 | * This program is free software; you can redistribute it and/or modify |
14 | * it under the terms of the GNU General Public License as published by | |
15 | * the Free Software Foundation; either version 2 of the License, or | |
16 | * (at your option) any later version. | |
17 | * | |
18 | * This program is distributed in the hope that it will be useful, | |
19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | * GNU General Public License for more details. | |
22 | * | |
23 | * You should have received a copy of the GNU General Public License | |
24 | * along with this program; if not, write to the Free Software | |
25 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
26 | * | |
27 | */ | |
8c00358d GB |
28 | #ifdef HAVE_CONFIG_H |
29 | #include "config.h" | |
30 | #endif | |
8c4f1350 EB |
31 | |
32 | #define _XOPEN_SOURCE /* glibc2 needs this */ | |
33 | ||
0b72c435 | 34 | #include "gpx.h" |
8c4f1350 EB |
35 | #include "viking.h" |
36 | #include <expat.h> | |
8c00358d | 37 | #ifdef HAVE_STRING_H |
8c4f1350 | 38 | #include <string.h> |
8c00358d | 39 | #endif |
8904c540 | 40 | #include <glib.h> |
8c00358d | 41 | #ifdef HAVE_MATH_H |
8904c540 | 42 | #include <math.h> |
8c00358d | 43 | #endif |
e3449376 | 44 | #include <time.h> |
8c4f1350 | 45 | |
8c4f1350 EB |
46 | typedef enum { |
47 | tt_unknown = 0, | |
48 | ||
49 | tt_gpx, | |
50 | ||
51 | tt_wpt, | |
52 | tt_wpt_desc, | |
53 | tt_wpt_name, | |
54 | tt_wpt_ele, | |
42c2ac3e | 55 | tt_wpt_sym, |
8c4f1350 EB |
56 | tt_wpt_link, /* New in GPX 1.1 */ |
57 | ||
58 | tt_trk, | |
59 | tt_trk_desc, | |
60 | tt_trk_name, | |
61 | ||
62 | tt_trk_trkseg, | |
63 | tt_trk_trkseg_trkpt, | |
64 | tt_trk_trkseg_trkpt_ele, | |
65 | tt_trk_trkseg_trkpt_time, | |
a2817d3c QT |
66 | /* extended */ |
67 | tt_trk_trkseg_trkpt_course, | |
68 | tt_trk_trkseg_trkpt_speed, | |
69 | tt_trk_trkseg_trkpt_fix, | |
70 | tt_trk_trkseg_trkpt_sat, | |
bf35388d | 71 | |
4a42b254 T |
72 | tt_trk_trkseg_trkpt_hdop, |
73 | tt_trk_trkseg_trkpt_vdop, | |
74 | tt_trk_trkseg_trkpt_pdop, | |
75 | ||
bf35388d EB |
76 | tt_waypoint, |
77 | tt_waypoint_coord, | |
78 | tt_waypoint_name, | |
8c4f1350 EB |
79 | } tag_type; |
80 | ||
81 | typedef struct tag_mapping { | |
82 | tag_type tag_type; /* enum from above for this tag */ | |
83 | const char *tag_name; /* xpath-ish tag name */ | |
84 | } tag_mapping; | |
85 | ||
0b72c435 OK |
86 | typedef struct { |
87 | GpxWritingOptions *options; | |
88 | FILE *file; | |
89 | } GpxWritingContext; | |
90 | ||
8c4f1350 EB |
91 | /* |
92 | * xpath(ish) mappings between full tag paths and internal identifers. | |
93 | * These appear in the order they appear in the GPX specification. | |
94 | * If it's not a tag we explictly handle, it doesn't go here. | |
95 | */ | |
96 | ||
97 | tag_mapping tag_path_map[] = { | |
8c4f1350 EB |
98 | |
99 | { tt_wpt, "/gpx/wpt" }, | |
bf35388d EB |
100 | |
101 | { tt_waypoint, "/loc/waypoint" }, | |
102 | { tt_waypoint_coord, "/loc/waypoint/coord" }, | |
103 | { tt_waypoint_name, "/loc/waypoint/name" }, | |
104 | ||
8c4f1350 EB |
105 | { tt_wpt_ele, "/gpx/wpt/ele" }, |
106 | { tt_wpt_name, "/gpx/wpt/name" }, | |
107 | { tt_wpt_desc, "/gpx/wpt/desc" }, | |
42c2ac3e | 108 | { tt_wpt_sym, "/gpx/wpt/sym" }, |
08b251ec | 109 | { tt_wpt_sym, "/loc/waypoint/type" }, |
8c4f1350 EB |
110 | { tt_wpt_link, "/gpx/wpt/link" }, /* GPX 1.1 */ |
111 | ||
112 | { tt_trk, "/gpx/trk" }, | |
561e6ad0 | 113 | { tt_trk, "/gpx/rte" }, |
8c4f1350 EB |
114 | { tt_trk_name, "/gpx/trk/name" }, |
115 | { tt_trk_desc, "/gpx/trk/desc" }, | |
116 | { tt_trk_trkseg, "/gpx/trk/trkseg" }, | |
8c4f1350 | 117 | { tt_trk_trkseg_trkpt, "/gpx/trk/trkseg/trkpt" }, |
561e6ad0 | 118 | { tt_trk_trkseg_trkpt, "/gpx/rte/rtept" }, |
8c4f1350 EB |
119 | { tt_trk_trkseg_trkpt_ele, "/gpx/trk/trkseg/trkpt/ele" }, |
120 | { tt_trk_trkseg_trkpt_time, "/gpx/trk/trkseg/trkpt/time" }, | |
a2817d3c QT |
121 | /* extended */ |
122 | { tt_trk_trkseg_trkpt_course, "/gpx/trk/trkseg/trkpt/course" }, | |
123 | { tt_trk_trkseg_trkpt_speed, "/gpx/trk/trkseg/trkpt/speed" }, | |
124 | { tt_trk_trkseg_trkpt_fix, "/gpx/trk/trkseg/trkpt/fix" }, | |
125 | { tt_trk_trkseg_trkpt_sat, "/gpx/trk/trkseg/trkpt/sat" }, | |
8c4f1350 | 126 | |
4a42b254 T |
127 | { tt_trk_trkseg_trkpt_hdop, "/gpx/trk/trkseg/trkpt/hdop" }, |
128 | { tt_trk_trkseg_trkpt_vdop, "/gpx/trk/trkseg/trkpt/vdop" }, | |
129 | { tt_trk_trkseg_trkpt_pdop, "/gpx/trk/trkseg/trkpt/pdop" }, | |
8c4f1350 EB |
130 | {0} |
131 | }; | |
132 | ||
133 | static tag_type get_tag(const char *t) | |
134 | { | |
135 | tag_mapping *tm; | |
136 | for (tm = tag_path_map; tm->tag_type != 0; tm++) | |
137 | if (0 == strcmp(tm->tag_name, t)) | |
138 | return tm->tag_type; | |
139 | return tt_unknown; | |
140 | } | |
141 | ||
142 | /******************************************/ | |
143 | ||
144 | tag_type current_tag = tt_unknown; | |
145 | GString *xpath = NULL; | |
146 | GString *c_cdata = NULL; | |
147 | ||
148 | /* current ("c_") objects */ | |
149 | VikTrackpoint *c_tp = NULL; | |
150 | VikWaypoint *c_wp = NULL; | |
151 | VikTrack *c_tr = NULL; | |
152 | ||
153 | gchar *c_wp_name = NULL; | |
154 | gchar *c_tr_name = NULL; | |
155 | ||
156 | /* temporary things so we don't have to create them lots of times */ | |
157 | const gchar *c_slat, *c_slon; | |
158 | struct LatLon c_ll; | |
159 | ||
160 | /* specialty flags / etc */ | |
161 | gboolean f_tr_newseg; | |
162 | guint unnamed_waypoints = 0; | |
163 | guint unnamed_tracks = 0; | |
164 | ||
165 | ||
166 | static const char *get_attr ( const char **attr, const char *key ) | |
167 | { | |
168 | while ( *attr ) { | |
169 | if ( strcmp(*attr,key) == 0 ) | |
170 | return *(attr + 1); | |
171 | attr += 2; | |
172 | } | |
173 | return NULL; | |
174 | } | |
175 | ||
176 | static gboolean set_c_ll ( const char **attr ) | |
177 | { | |
178 | if ( (c_slat = get_attr ( attr, "lat" )) && (c_slon = get_attr ( attr, "lon" )) ) { | |
d1cd12c0 T |
179 | c_ll.lat = g_ascii_strtod(c_slat, NULL); |
180 | c_ll.lon = g_ascii_strtod(c_slon, NULL); | |
8c4f1350 EB |
181 | return TRUE; |
182 | } | |
183 | return FALSE; | |
184 | } | |
185 | ||
186 | static void gpx_start(VikTrwLayer *vtl, const char *el, const char **attr) | |
187 | { | |
bf35388d EB |
188 | static const gchar *tmp; |
189 | ||
8c4f1350 EB |
190 | g_string_append_c ( xpath, '/' ); |
191 | g_string_append ( xpath, el ); | |
192 | current_tag = get_tag ( xpath->str ); | |
193 | ||
194 | switch ( current_tag ) { | |
195 | ||
196 | case tt_wpt: | |
197 | if ( set_c_ll( attr ) ) { | |
198 | c_wp = vik_waypoint_new (); | |
0b9f279d RN |
199 | c_wp->visible = TRUE; |
200 | if ( get_attr ( attr, "hidden" ) ) | |
201 | c_wp->visible = FALSE; | |
8c4f1350 EB |
202 | |
203 | vik_coord_load_from_latlon ( &(c_wp->coord), vik_trw_layer_get_coord_mode ( vtl ), &c_ll ); | |
204 | } | |
205 | break; | |
206 | ||
207 | case tt_trk: | |
208 | c_tr = vik_track_new (); | |
0b9f279d RN |
209 | c_tr->visible = TRUE; |
210 | if ( get_attr ( attr, "hidden" ) ) | |
211 | c_tr->visible = FALSE; | |
8c4f1350 EB |
212 | break; |
213 | ||
214 | case tt_trk_trkseg: | |
215 | f_tr_newseg = TRUE; | |
216 | break; | |
217 | ||
218 | case tt_trk_trkseg_trkpt: | |
219 | if ( set_c_ll( attr ) ) { | |
220 | c_tp = vik_trackpoint_new (); | |
8c4f1350 EB |
221 | vik_coord_load_from_latlon ( &(c_tp->coord), vik_trw_layer_get_coord_mode ( vtl ), &c_ll ); |
222 | if ( f_tr_newseg ) { | |
223 | c_tp->newsegment = TRUE; | |
224 | f_tr_newseg = FALSE; | |
225 | } | |
226 | c_tr->trackpoints = g_list_append ( c_tr->trackpoints, c_tp ); | |
227 | } | |
228 | break; | |
229 | ||
230 | case tt_trk_trkseg_trkpt_ele: | |
231 | case tt_trk_trkseg_trkpt_time: | |
232 | case tt_wpt_desc: | |
233 | case tt_wpt_name: | |
234 | case tt_wpt_ele: | |
235 | case tt_wpt_link: | |
236 | case tt_trk_desc: | |
237 | case tt_trk_name: | |
238 | g_string_erase ( c_cdata, 0, -1 ); /* clear the cdata buffer */ | |
bf35388d | 239 | break; |
8c4f1350 | 240 | |
bf35388d EB |
241 | case tt_waypoint: |
242 | c_wp = vik_waypoint_new (); | |
bf35388d EB |
243 | c_wp->visible = TRUE; |
244 | break; | |
245 | ||
246 | case tt_waypoint_coord: | |
247 | if ( set_c_ll( attr ) ) | |
248 | vik_coord_load_from_latlon ( &(c_wp->coord), vik_trw_layer_get_coord_mode ( vtl ), &c_ll ); | |
249 | break; | |
250 | ||
251 | case tt_waypoint_name: | |
252 | if ( ( tmp = get_attr(attr, "id") ) ) { | |
253 | if ( c_wp_name ) | |
254 | g_free ( c_wp_name ); | |
255 | c_wp_name = g_strdup ( tmp ); | |
256 | } | |
257 | g_string_erase ( c_cdata, 0, -1 ); /* clear the cdata buffer for description */ | |
258 | break; | |
259 | ||
8c4f1350 EB |
260 | default: break; |
261 | } | |
262 | } | |
263 | ||
264 | static void gpx_end(VikTrwLayer *vtl, const char *el) | |
265 | { | |
dd81e762 GB |
266 | static GTimeVal tp_time; |
267 | ||
8c4f1350 EB |
268 | g_string_truncate ( xpath, xpath->len - strlen(el) - 1 ); |
269 | ||
270 | switch ( current_tag ) { | |
271 | ||
bf35388d | 272 | case tt_waypoint: |
8c4f1350 EB |
273 | case tt_wpt: |
274 | if ( ! c_wp_name ) | |
275 | c_wp_name = g_strdup_printf("VIKING_WP%d", unnamed_waypoints++); | |
805d282e EB |
276 | vik_trw_layer_filein_add_waypoint ( vtl, c_wp_name, c_wp ); |
277 | g_free ( c_wp_name ); | |
8c4f1350 EB |
278 | c_wp = NULL; |
279 | c_wp_name = NULL; | |
280 | break; | |
281 | ||
282 | case tt_trk: | |
283 | if ( ! c_tr_name ) | |
a20877b7 | 284 | c_tr_name = g_strdup_printf("VIKING_TR%d", unnamed_tracks++); |
805d282e EB |
285 | vik_trw_layer_filein_add_track ( vtl, c_tr_name, c_tr ); |
286 | g_free ( c_tr_name ); | |
8c4f1350 EB |
287 | c_tr = NULL; |
288 | c_tr_name = NULL; | |
289 | break; | |
290 | ||
291 | case tt_wpt_name: | |
292 | if ( c_wp_name ) | |
293 | g_free ( c_wp_name ); | |
294 | c_wp_name = g_strdup ( c_cdata->str ); | |
295 | g_string_erase ( c_cdata, 0, -1 ); | |
296 | break; | |
297 | ||
298 | case tt_trk_name: | |
299 | if ( c_tr_name ) | |
300 | g_free ( c_tr_name ); | |
301 | c_tr_name = g_strdup ( c_cdata->str ); | |
302 | g_string_erase ( c_cdata, 0, -1 ); | |
303 | break; | |
304 | ||
305 | case tt_wpt_ele: | |
d1cd12c0 | 306 | c_wp->altitude = g_ascii_strtod ( c_cdata->str, NULL ); |
8c4f1350 EB |
307 | g_string_erase ( c_cdata, 0, -1 ); |
308 | break; | |
309 | ||
310 | case tt_trk_trkseg_trkpt_ele: | |
d1cd12c0 | 311 | c_tp->altitude = g_ascii_strtod ( c_cdata->str, NULL ); |
8c4f1350 EB |
312 | g_string_erase ( c_cdata, 0, -1 ); |
313 | break; | |
314 | ||
bf35388d | 315 | case tt_waypoint_name: /* .loc name is really description. */ |
8c4f1350 EB |
316 | case tt_wpt_desc: |
317 | vik_waypoint_set_comment ( c_wp, c_cdata->str ); | |
318 | g_string_erase ( c_cdata, 0, -1 ); | |
319 | break; | |
320 | ||
321 | case tt_wpt_link: | |
322 | vik_waypoint_set_image ( c_wp, c_cdata->str ); | |
323 | g_string_erase ( c_cdata, 0, -1 ); | |
324 | break; | |
325 | ||
ea3933fc EB |
326 | case tt_wpt_sym: { |
327 | gchar *tmp_lower = g_utf8_strdown(c_cdata->str, -1); /* for things like <type>Geocache</type> */ | |
328 | vik_waypoint_set_symbol ( c_wp, tmp_lower ); | |
329 | g_free ( tmp_lower ); | |
42c2ac3e AF |
330 | g_string_erase ( c_cdata, 0, -1 ); |
331 | break; | |
ea3933fc | 332 | } |
42c2ac3e | 333 | |
8c4f1350 EB |
334 | case tt_trk_desc: |
335 | vik_track_set_comment ( c_tr, c_cdata->str ); | |
336 | g_string_erase ( c_cdata, 0, -1 ); | |
337 | break; | |
338 | ||
339 | case tt_trk_trkseg_trkpt_time: | |
dd81e762 GB |
340 | if ( g_time_val_from_iso8601(c_cdata->str, &tp_time) ) { |
341 | c_tp->timestamp = tp_time.tv_sec; | |
8c4f1350 EB |
342 | c_tp->has_timestamp = TRUE; |
343 | } | |
344 | g_string_erase ( c_cdata, 0, -1 ); | |
bf35388d | 345 | break; |
8c4f1350 | 346 | |
a2817d3c | 347 | case tt_trk_trkseg_trkpt_course: |
d1cd12c0 | 348 | c_tp->course = 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_speed: | |
d1cd12c0 | 353 | c_tp->speed = g_ascii_strtod ( c_cdata->str, NULL ); |
a2817d3c QT |
354 | g_string_erase ( c_cdata, 0, -1 ); |
355 | break; | |
356 | ||
357 | case tt_trk_trkseg_trkpt_fix: | |
a2817d3c QT |
358 | if (!strcmp("2d", c_cdata->str)) |
359 | c_tp->fix_mode = VIK_GPS_MODE_2D; | |
360 | else if (!strcmp("3d", c_cdata->str)) | |
361 | c_tp->fix_mode = VIK_GPS_MODE_3D; | |
362 | else /* TODO: more fix modes here */ | |
363 | c_tp->fix_mode = VIK_GPS_MODE_NOT_SEEN; | |
364 | g_string_erase ( c_cdata, 0, -1 ); | |
365 | break; | |
366 | ||
367 | case tt_trk_trkseg_trkpt_sat: | |
a2817d3c QT |
368 | c_tp->nsats = atoi ( c_cdata->str ); |
369 | g_string_erase ( c_cdata, 0, -1 ); | |
370 | break; | |
371 | ||
4a42b254 | 372 | case tt_trk_trkseg_trkpt_hdop: |
4a42b254 T |
373 | c_tp->hdop = g_strtod ( c_cdata->str, NULL ); |
374 | g_string_erase ( c_cdata, 0, -1 ); | |
375 | break; | |
376 | ||
377 | case tt_trk_trkseg_trkpt_vdop: | |
4a42b254 T |
378 | c_tp->vdop = g_strtod ( c_cdata->str, NULL ); |
379 | g_string_erase ( c_cdata, 0, -1 ); | |
380 | break; | |
381 | ||
382 | case tt_trk_trkseg_trkpt_pdop: | |
4a42b254 T |
383 | c_tp->pdop = g_strtod ( c_cdata->str, NULL ); |
384 | g_string_erase ( c_cdata, 0, -1 ); | |
385 | break; | |
386 | ||
8c4f1350 EB |
387 | default: break; |
388 | } | |
389 | ||
390 | current_tag = get_tag ( xpath->str ); | |
391 | } | |
392 | ||
393 | static void gpx_cdata(void *dta, const XML_Char *s, int len) | |
394 | { | |
395 | switch ( current_tag ) { | |
396 | case tt_wpt_name: | |
397 | case tt_trk_name: | |
398 | case tt_wpt_ele: | |
399 | case tt_trk_trkseg_trkpt_ele: | |
400 | case tt_wpt_desc: | |
42c2ac3e | 401 | case tt_wpt_sym: |
8c4f1350 EB |
402 | case tt_wpt_link: |
403 | case tt_trk_desc: | |
404 | case tt_trk_trkseg_trkpt_time: | |
a2817d3c QT |
405 | case tt_trk_trkseg_trkpt_course: |
406 | case tt_trk_trkseg_trkpt_speed: | |
407 | case tt_trk_trkseg_trkpt_fix: | |
408 | case tt_trk_trkseg_trkpt_sat: | |
4a42b254 T |
409 | case tt_trk_trkseg_trkpt_hdop: |
410 | case tt_trk_trkseg_trkpt_vdop: | |
411 | case tt_trk_trkseg_trkpt_pdop: | |
bf35388d | 412 | case tt_waypoint_name: /* .loc name is really description. */ |
8c4f1350 EB |
413 | g_string_append_len ( c_cdata, s, len ); |
414 | break; | |
415 | ||
416 | default: break; /* ignore cdata from other things */ | |
417 | } | |
418 | } | |
419 | ||
420 | // make like a "stack" of tag names | |
421 | // like gpspoint's separated like /gpx/wpt/whatever | |
422 | ||
efe9a9c3 | 423 | gboolean a_gpx_read_file( VikTrwLayer *vtl, FILE *f ) { |
8c4f1350 EB |
424 | XML_Parser parser = XML_ParserCreate(NULL); |
425 | int done=0, len; | |
efe9a9c3 | 426 | enum XML_Status status = XML_STATUS_ERROR; |
8c4f1350 EB |
427 | |
428 | XML_SetElementHandler(parser, (XML_StartElementHandler) gpx_start, (XML_EndElementHandler) gpx_end); | |
429 | XML_SetUserData(parser, vtl); /* in the future we could remove all global variables */ | |
430 | XML_SetCharacterDataHandler(parser, (XML_CharacterDataHandler) gpx_cdata); | |
431 | ||
432 | gchar buf[4096]; | |
433 | ||
bf35388d | 434 | g_assert ( f != NULL && vtl != NULL ); |
8c4f1350 EB |
435 | |
436 | xpath = g_string_new ( "" ); | |
437 | c_cdata = g_string_new ( "" ); | |
438 | ||
439 | unnamed_waypoints = 0; | |
440 | unnamed_tracks = 0; | |
441 | ||
442 | while (!done) { | |
443 | len = fread(buf, 1, sizeof(buf)-7, f); | |
444 | done = feof(f) || !len; | |
efe9a9c3 | 445 | status = XML_Parse(parser, buf, len, done); |
8c4f1350 EB |
446 | } |
447 | ||
6278ccc6 | 448 | XML_ParserFree (parser); |
8c4f1350 EB |
449 | g_string_free ( xpath, TRUE ); |
450 | g_string_free ( c_cdata, TRUE ); | |
efe9a9c3 GB |
451 | |
452 | return status != XML_STATUS_ERROR; | |
8c4f1350 | 453 | } |
561e6ad0 EB |
454 | |
455 | /**** entitize from GPSBabel ****/ | |
456 | typedef struct { | |
457 | const char * text; | |
458 | const char * entity; | |
459 | int not_html; | |
460 | } entity_types; | |
461 | ||
462 | static | |
463 | entity_types stdentities[] = { | |
464 | { "&", "&", 0 }, | |
465 | { "'", "'", 1 }, | |
466 | { "<", "<", 0 }, | |
467 | { ">", ">", 0 }, | |
468 | { "\"", """, 0 }, | |
469 | { NULL, NULL, 0 } | |
470 | }; | |
471 | ||
472 | void utf8_to_int( const char *cp, int *bytes, int *value ) | |
473 | { | |
474 | if ( (*cp & 0xe0) == 0xc0 ) { | |
475 | if ( (*(cp+1) & 0xc0) != 0x80 ) goto dodefault; | |
476 | *bytes = 2; | |
477 | *value = ((*cp & 0x1f) << 6) | | |
478 | (*(cp+1) & 0x3f); | |
479 | } | |
480 | else if ( (*cp & 0xf0) == 0xe0 ) { | |
481 | if ( (*(cp+1) & 0xc0) != 0x80 ) goto dodefault; | |
482 | if ( (*(cp+2) & 0xc0) != 0x80 ) goto dodefault; | |
483 | *bytes = 3; | |
484 | *value = ((*cp & 0x0f) << 12) | | |
485 | ((*(cp+1) & 0x3f) << 6) | | |
486 | (*(cp+2) & 0x3f); | |
487 | } | |
488 | else if ( (*cp & 0xf8) == 0xf0 ) { | |
489 | if ( (*(cp+1) & 0xc0) != 0x80 ) goto dodefault; | |
490 | if ( (*(cp+2) & 0xc0) != 0x80 ) goto dodefault; | |
491 | if ( (*(cp+3) & 0xc0) != 0x80 ) goto dodefault; | |
492 | *bytes = 4; | |
493 | *value = ((*cp & 0x07) << 18) | | |
494 | ((*(cp+1) & 0x3f) << 12) | | |
495 | ((*(cp+2) & 0x3f) << 6) | | |
496 | (*(cp+3) & 0x3f); | |
497 | } | |
498 | else if ( (*cp & 0xfc) == 0xf8 ) { | |
499 | if ( (*(cp+1) & 0xc0) != 0x80 ) goto dodefault; | |
500 | if ( (*(cp+2) & 0xc0) != 0x80 ) goto dodefault; | |
501 | if ( (*(cp+3) & 0xc0) != 0x80 ) goto dodefault; | |
502 | if ( (*(cp+4) & 0xc0) != 0x80 ) goto dodefault; | |
503 | *bytes = 5; | |
504 | *value = ((*cp & 0x03) << 24) | | |
505 | ((*(cp+1) & 0x3f) << 18) | | |
506 | ((*(cp+2) & 0x3f) << 12) | | |
507 | ((*(cp+3) & 0x3f) << 6) | | |
508 | (*(cp+4) & 0x3f); | |
509 | } | |
510 | else if ( (*cp & 0xfe) == 0xfc ) { | |
511 | if ( (*(cp+1) & 0xc0) != 0x80 ) goto dodefault; | |
512 | if ( (*(cp+2) & 0xc0) != 0x80 ) goto dodefault; | |
513 | if ( (*(cp+3) & 0xc0) != 0x80 ) goto dodefault; | |
514 | if ( (*(cp+4) & 0xc0) != 0x80 ) goto dodefault; | |
515 | if ( (*(cp+5) & 0xc0) != 0x80 ) goto dodefault; | |
516 | *bytes = 6; | |
517 | *value = ((*cp & 0x01) << 30) | | |
518 | ((*(cp+1) & 0x3f) << 24) | | |
519 | ((*(cp+2) & 0x3f) << 18) | | |
520 | ((*(cp+3) & 0x3f) << 12) | | |
521 | ((*(cp+4) & 0x3f) << 6) | | |
522 | (*(cp+5) & 0x3f); | |
523 | } | |
524 | else { | |
525 | dodefault: | |
526 | *bytes = 1; | |
527 | *value = (unsigned char)*cp; | |
528 | } | |
529 | } | |
530 | ||
531 | static | |
532 | char * | |
533 | entitize(const char * str) | |
534 | { | |
535 | int elen, ecount, nsecount; | |
536 | entity_types *ep; | |
537 | const char * cp; | |
538 | char * p, * tmp, * xstr; | |
539 | ||
540 | char tmpsub[20]; | |
541 | int bytes = 0; | |
542 | int value = 0; | |
543 | ep = stdentities; | |
544 | elen = ecount = nsecount = 0; | |
545 | ||
546 | /* figure # of entity replacements and additional size. */ | |
547 | while (ep->text) { | |
548 | cp = str; | |
549 | while ((cp = strstr(cp, ep->text)) != NULL) { | |
550 | elen += strlen(ep->entity) - strlen(ep->text); | |
551 | ecount++; | |
552 | cp += strlen(ep->text); | |
553 | } | |
554 | ep++; | |
555 | } | |
556 | ||
557 | /* figure the same for other than standard entities (i.e. anything | |
558 | * that isn't in the range U+0000 to U+007F */ | |
559 | for ( cp = str; *cp; cp++ ) { | |
560 | if ( *cp & 0x80 ) { | |
561 | ||
562 | utf8_to_int( cp, &bytes, &value ); | |
563 | cp += bytes-1; | |
564 | elen += sprintf( tmpsub, "&#x%x;", value ) - bytes; | |
565 | nsecount++; | |
566 | } | |
567 | } | |
568 | ||
569 | /* enough space for the whole string plus entity replacements, if any */ | |
570 | tmp = g_malloc((strlen(str) + elen + 1)); | |
571 | strcpy(tmp, str); | |
572 | ||
573 | /* no entity replacements */ | |
574 | if (ecount == 0 && nsecount == 0) | |
575 | return (tmp); | |
576 | ||
577 | if ( ecount != 0 ) { | |
578 | for (ep = stdentities; ep->text; ep++) { | |
579 | p = tmp; | |
580 | while ((p = strstr(p, ep->text)) != NULL) { | |
581 | elen = strlen(ep->entity); | |
582 | ||
583 | xstr = g_strdup(p + strlen(ep->text)); | |
584 | ||
585 | strcpy(p, ep->entity); | |
586 | strcpy(p + elen, xstr); | |
587 | ||
588 | g_free(xstr); | |
589 | ||
590 | p += elen; | |
591 | } | |
592 | } | |
593 | } | |
594 | ||
595 | if ( nsecount != 0 ) { | |
596 | p = tmp; | |
597 | while (*p) { | |
598 | if ( *p & 0x80 ) { | |
599 | utf8_to_int( p, &bytes, &value ); | |
600 | if ( p[bytes] ) { | |
601 | xstr = g_strdup( p + bytes ); | |
602 | } | |
603 | else { | |
604 | xstr = NULL; | |
605 | } | |
606 | sprintf( p, "&#x%x;", value ); | |
607 | p = p+strlen(p); | |
608 | if ( xstr ) { | |
609 | strcpy( p, xstr ); | |
610 | g_free(xstr); | |
611 | } | |
612 | } | |
613 | else { | |
614 | p++; | |
615 | } | |
616 | } | |
617 | } | |
618 | return (tmp); | |
619 | } | |
620 | /**** end GPSBabel code ****/ | |
621 | ||
622 | /* export GPX */ | |
8904c540 | 623 | |
c9570f86 | 624 | static void gpx_write_waypoint ( VikWaypoint *wp, GpxWritingContext *context ) |
561e6ad0 | 625 | { |
208d2084 RN |
626 | // Don't write invisible waypoints when specified |
627 | if (context->options && !context->options->hidden && !wp->visible) | |
628 | return; | |
629 | ||
0b72c435 | 630 | FILE *f = context->file; |
561e6ad0 | 631 | static struct LatLon ll; |
8904c540 | 632 | gchar *s_lat,*s_lon; |
561e6ad0 EB |
633 | gchar *tmp; |
634 | vik_coord_to_latlon ( &(wp->coord), &ll ); | |
161aa492 EB |
635 | s_lat = a_coords_dtostr( ll.lat ); |
636 | s_lon = a_coords_dtostr( ll.lon ); | |
208d2084 RN |
637 | // NB 'hidden' is not part of any GPX standard - this appears to be a made up Viking 'extension' |
638 | // luckily most other GPX processing software ignores things they don't understand | |
8904c540 GB |
639 | fprintf ( f, "<wpt lat=\"%s\" lon=\"%s\"%s>\n", |
640 | s_lat, s_lon, wp->visible ? "" : " hidden=\"hidden\"" ); | |
641 | g_free ( s_lat ); | |
642 | g_free ( s_lon ); | |
561e6ad0 | 643 | |
c9570f86 RN |
644 | // Sanity clause |
645 | if ( wp->name ) | |
646 | tmp = entitize ( wp->name ); | |
647 | else | |
648 | tmp = g_strdup ("waypoint"); | |
649 | ||
561e6ad0 EB |
650 | fprintf ( f, " <name>%s</name>\n", tmp ); |
651 | g_free ( tmp); | |
652 | ||
653 | if ( wp->altitude != VIK_DEFAULT_ALTITUDE ) | |
8904c540 | 654 | { |
161aa492 | 655 | tmp = a_coords_dtostr ( wp->altitude ); |
8904c540 GB |
656 | fprintf ( f, " <ele>%s</ele>\n", tmp ); |
657 | g_free ( tmp ); | |
658 | } | |
561e6ad0 EB |
659 | if ( wp->comment ) |
660 | { | |
661 | tmp = entitize(wp->comment); | |
662 | fprintf ( f, " <desc>%s</desc>\n", tmp ); | |
663 | g_free ( tmp ); | |
664 | } | |
665 | if ( wp->image ) | |
666 | { | |
667 | tmp = entitize(wp->image); | |
668 | fprintf ( f, " <link>%s</link>\n", tmp ); | |
669 | g_free ( tmp ); | |
670 | } | |
42c2ac3e AF |
671 | if ( wp->symbol ) |
672 | { | |
673 | tmp = entitize(wp->symbol); | |
674 | fprintf ( f, " <sym>%s</sym>\n", tmp); | |
675 | g_free ( tmp ); | |
676 | } | |
677 | ||
561e6ad0 EB |
678 | fprintf ( f, "</wpt>\n" ); |
679 | } | |
680 | ||
0b72c435 | 681 | static void gpx_write_trackpoint ( VikTrackpoint *tp, GpxWritingContext *context ) |
561e6ad0 | 682 | { |
0b72c435 | 683 | FILE *f = context->file; |
561e6ad0 | 684 | static struct LatLon ll; |
4a42b254 | 685 | gchar *s_lat,*s_lon, *s_alt, *s_dop; |
dd81e762 | 686 | gchar *time_iso8601; |
561e6ad0 EB |
687 | vik_coord_to_latlon ( &(tp->coord), &ll ); |
688 | ||
689 | if ( tp->newsegment ) | |
690 | fprintf ( f, " </trkseg>\n <trkseg>\n" ); | |
691 | ||
161aa492 EB |
692 | s_lat = a_coords_dtostr( ll.lat ); |
693 | s_lon = a_coords_dtostr( ll.lon ); | |
8904c540 | 694 | fprintf ( f, " <trkpt lat=\"%s\" lon=\"%s\">\n", s_lat, s_lon ); |
0b72c435 OK |
695 | g_free ( s_lat ); s_lat = NULL; |
696 | g_free ( s_lon ); s_lon = NULL; | |
561e6ad0 | 697 | |
0b72c435 | 698 | s_alt = NULL; |
561e6ad0 | 699 | if ( tp->altitude != VIK_DEFAULT_ALTITUDE ) |
8904c540 | 700 | { |
161aa492 | 701 | s_alt = a_coords_dtostr ( tp->altitude ); |
8904c540 | 702 | } |
0b72c435 | 703 | else if ( context->options != NULL && context->options->force_ele ) |
36179a2e OK |
704 | { |
705 | s_alt = a_coords_dtostr ( 0 ); | |
706 | } | |
0b72c435 OK |
707 | if (s_alt != NULL) |
708 | fprintf ( f, " <ele>%s</ele>\n", s_alt ); | |
709 | g_free ( s_alt ); s_alt = NULL; | |
36179a2e | 710 | |
dd81e762 | 711 | time_iso8601 = NULL; |
561e6ad0 | 712 | if ( tp->has_timestamp ) { |
dd81e762 GB |
713 | GTimeVal timestamp; |
714 | timestamp.tv_sec = tp->timestamp; | |
61f37ac9 | 715 | timestamp.tv_usec = 0; |
dd81e762 GB |
716 | |
717 | time_iso8601 = g_time_val_to_iso8601 ( ×tamp ); | |
561e6ad0 | 718 | } |
0b72c435 | 719 | else if ( context->options != NULL && context->options->force_time ) |
36179a2e | 720 | { |
dd81e762 GB |
721 | GTimeVal current; |
722 | g_get_current_time ( ¤t ); | |
36179a2e | 723 | |
dd81e762 | 724 | time_iso8601 = g_time_val_to_iso8601 ( ¤t ); |
36179a2e | 725 | } |
dd81e762 GB |
726 | if ( time_iso8601 != NULL ) |
727 | fprintf ( f, " <time>%s</time>\n", time_iso8601 ); | |
728 | g_free(time_iso8601); | |
729 | time_iso8601 = NULL; | |
36179a2e | 730 | |
ad54cd32 T |
731 | if (!isnan(tp->course)) { |
732 | gchar *s_course = a_coords_dtostr(tp->course); | |
733 | fprintf ( f, " <course>%s</course>\n", s_course ); | |
734 | g_free(s_course); | |
a2817d3c | 735 | } |
ad54cd32 T |
736 | if (!isnan(tp->speed)) { |
737 | gchar *s_speed = a_coords_dtostr(tp->speed); | |
738 | fprintf ( f, " <speed>%s</speed>\n", s_speed ); | |
739 | g_free(s_speed); | |
740 | } | |
741 | if (tp->fix_mode == VIK_GPS_MODE_2D) | |
742 | fprintf ( f, " <fix>2d</fix>\n"); | |
743 | if (tp->fix_mode == VIK_GPS_MODE_3D) | |
744 | fprintf ( f, " <fix>3d</fix>\n"); | |
745 | if (tp->nsats > 0) | |
746 | fprintf ( f, " <sat>%d</sat>\n", tp->nsats ); | |
a2817d3c | 747 | |
4a42b254 T |
748 | s_dop = NULL; |
749 | if ( tp->hdop != VIK_DEFAULT_DOP ) | |
750 | { | |
751 | s_dop = a_coords_dtostr ( tp->hdop ); | |
752 | } | |
753 | if (s_dop != NULL) | |
754 | fprintf ( f, " <hdop>%s</hdop>\n", s_dop ); | |
755 | g_free ( s_dop ); s_dop = NULL; | |
756 | ||
757 | if ( tp->vdop != VIK_DEFAULT_DOP ) | |
758 | { | |
759 | s_dop = a_coords_dtostr ( tp->vdop ); | |
760 | } | |
761 | if (s_dop != NULL) | |
762 | fprintf ( f, " <vdop>%s</vdop>\n", s_dop ); | |
763 | g_free ( s_dop ); s_dop = NULL; | |
764 | ||
765 | if ( tp->pdop != VIK_DEFAULT_DOP ) | |
766 | { | |
767 | s_dop = a_coords_dtostr ( tp->pdop ); | |
768 | } | |
769 | if (s_dop != NULL) | |
770 | fprintf ( f, " <pdop>%s</pdop>\n", s_dop ); | |
771 | g_free ( s_dop ); s_dop = NULL; | |
772 | ||
773 | ||
561e6ad0 EB |
774 | fprintf ( f, " </trkpt>\n" ); |
775 | } | |
776 | ||
777 | ||
ce4bd1cf | 778 | static void gpx_write_track ( VikTrack *t, GpxWritingContext *context ) |
561e6ad0 | 779 | { |
208d2084 RN |
780 | // Don't write invisible tracks when specified |
781 | if (context->options && !context->options->hidden && !t->visible) | |
782 | return; | |
783 | ||
0b72c435 | 784 | FILE *f = context->file; |
561e6ad0 | 785 | gchar *tmp; |
494eb388 | 786 | gboolean first_tp_is_newsegment = FALSE; /* must temporarily make it not so, but we want to restore state. not that it matters. */ |
561e6ad0 | 787 | |
ce4bd1cf RN |
788 | // Sanity clause |
789 | if ( t->name ) | |
790 | tmp = entitize ( t->name ); | |
791 | else | |
792 | tmp = g_strdup ("track"); | |
793 | ||
208d2084 RN |
794 | // NB 'hidden' is not part of any GPX standard - this appears to be a made up Viking 'extension' |
795 | // luckily most other GPX processing software ignores things they don't understand | |
561e6ad0 EB |
796 | fprintf ( f, "<trk%s>\n <name>%s</name>\n", t->visible ? "" : " hidden=\"hidden\"", tmp ); |
797 | g_free ( tmp ); | |
798 | ||
799 | if ( t->comment ) | |
800 | { | |
801 | tmp = entitize ( t->comment ); | |
802 | fprintf ( f, " <desc>%s</desc>\n", tmp ); | |
803 | g_free ( tmp ); | |
804 | } | |
561e6ad0 EB |
805 | fprintf ( f, " <trkseg>\n" ); |
806 | ||
807 | if ( t->trackpoints && t->trackpoints->data ) { | |
808 | first_tp_is_newsegment = VIK_TRACKPOINT(t->trackpoints->data)->newsegment; | |
809 | VIK_TRACKPOINT(t->trackpoints->data)->newsegment = FALSE; /* so we won't write </trkseg><trkseg> already */ | |
0b72c435 | 810 | g_list_foreach ( t->trackpoints, (GFunc) gpx_write_trackpoint, context ); |
561e6ad0 | 811 | VIK_TRACKPOINT(t->trackpoints->data)->newsegment = first_tp_is_newsegment; /* restore state */ |
494eb388 | 812 | } |
561e6ad0 EB |
813 | |
814 | fprintf ( f, "</trkseg>\n</trk>\n" ); | |
815 | } | |
816 | ||
5092de80 | 817 | static void gpx_write_header( FILE *f ) |
561e6ad0 EB |
818 | { |
819 | fprintf(f, "<?xml version=\"1.0\"?>\n" | |
820 | "<gpx version=\"1.0\" creator=\"Viking -- http://viking.sf.net/\"\n" | |
821 | "xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n" | |
822 | "xmlns=\"http://www.topografix.com/GPX/1/0\"\n" | |
823 | "xsi:schemaLocation=\"http://www.topografix.com/GPX/1/0 http://www.topografix.com/GPX/1/0/gpx.xsd\">\n"); | |
5092de80 GB |
824 | } |
825 | ||
826 | static void gpx_write_footer( FILE *f ) | |
827 | { | |
561e6ad0 | 828 | fprintf(f, "</gpx>\n"); |
5092de80 | 829 | } |
561e6ad0 | 830 | |
c9570f86 | 831 | static int gpx_waypoint_compare(const void *x, const void *y) |
eab858a1 | 832 | { |
c9570f86 RN |
833 | VikWaypoint *a = (VikWaypoint *)x; |
834 | VikWaypoint *b = (VikWaypoint *)y; | |
eab858a1 EB |
835 | return strcmp(a->name,b->name); |
836 | } | |
837 | ||
e3449376 | 838 | /* Function to compare two tracks by their first timestamp */ |
0dabdc4f | 839 | static int gpx_track_compare_timestamp (const void *x, const void *y) |
e3449376 | 840 | { |
0dabdc4f RN |
841 | VikTrack *a = (VikTrack *)x; |
842 | VikTrack *b = (VikTrack *)y; | |
843 | ||
844 | VikTrackpoint *tpa = NULL; | |
845 | VikTrackpoint *tpb = NULL; | |
846 | ||
847 | if ( a->trackpoints ) | |
848 | tpa = VIK_TRACKPOINT(g_list_first(a->trackpoints)->data); | |
849 | ||
850 | if ( b->trackpoints ) | |
851 | tpb = VIK_TRACKPOINT(g_list_first(b->trackpoints)->data); | |
852 | ||
853 | if ( tpa && tpb ) { | |
854 | if ( tpa->timestamp < tpb->timestamp ) | |
855 | return -1; | |
856 | if ( tpa->timestamp > tpb->timestamp ) | |
857 | return 1; | |
e3449376 | 858 | } |
0dabdc4f RN |
859 | |
860 | if ( tpa && !tpb ) | |
e3449376 | 861 | return 1; |
0dabdc4f RN |
862 | |
863 | if ( !tpa && tpb ) | |
864 | return -1; | |
865 | ||
e3449376 HR |
866 | return 0; |
867 | } | |
868 | ||
208d2084 | 869 | void a_gpx_write_file ( VikTrwLayer *vtl, FILE *f, GpxWritingOptions *options ) |
0b72c435 OK |
870 | { |
871 | GpxWritingContext context = { options, f }; | |
eab858a1 | 872 | |
5092de80 | 873 | gpx_write_header ( f ); |
eab858a1 | 874 | |
c9570f86 RN |
875 | // gather waypoints in a list, then sort |
876 | // g_hash_table_get_values: glib 2.14+ | |
877 | GList *gl = g_hash_table_get_values ( vik_trw_layer_get_waypoints ( vtl ) ); | |
878 | gl = g_list_sort ( gl, gpx_waypoint_compare ); | |
0b72c435 | 879 | |
c9570f86 RN |
880 | GList *iter; |
881 | for (iter = g_list_first (gl); iter != NULL; iter = g_list_next (iter)) { | |
882 | gpx_write_waypoint ( (VikWaypoint*)iter->data, &context ); | |
883 | } | |
eab858a1 | 884 | |
c9570f86 | 885 | g_list_free ( gl ); |
e3449376 | 886 | /* Sort by timestamp */ |
ce4bd1cf | 887 | gl = g_hash_table_get_values ( vik_trw_layer_get_tracks ( vtl ) ); |
0dabdc4f | 888 | gl = g_list_sort ( gl, gpx_track_compare_timestamp ); |
ce4bd1cf RN |
889 | |
890 | for (iter = g_list_first (gl); iter != NULL; iter = g_list_next (iter)) { | |
891 | gpx_write_track ( (VikTrack*)iter->data, &context ); | |
e3449376 | 892 | } |
ce4bd1cf RN |
893 | |
894 | g_list_free ( gl ); | |
895 | ||
5092de80 GB |
896 | gpx_write_footer ( f ); |
897 | } | |
561e6ad0 | 898 | |
208d2084 | 899 | void a_gpx_write_track_file ( VikTrack *trk, FILE *f, GpxWritingOptions *options ) |
0b72c435 OK |
900 | { |
901 | GpxWritingContext context = {options, f}; | |
5092de80 | 902 | gpx_write_header ( f ); |
ce4bd1cf | 903 | gpx_write_track ( trk, &context ); |
5092de80 | 904 | gpx_write_footer ( f ); |
561e6ad0 | 905 | } |