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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, | |
6b2f262e | 52 | tt_wpt_cmt, |
8c4f1350 EB |
53 | tt_wpt_desc, |
54 | tt_wpt_name, | |
55 | tt_wpt_ele, | |
42c2ac3e | 56 | tt_wpt_sym, |
8c4f1350 EB |
57 | tt_wpt_link, /* New in GPX 1.1 */ |
58 | ||
59 | tt_trk, | |
6b2f262e | 60 | tt_trk_cmt, |
8c4f1350 EB |
61 | tt_trk_desc, |
62 | tt_trk_name, | |
63 | ||
64 | tt_trk_trkseg, | |
65 | tt_trk_trkseg_trkpt, | |
66 | tt_trk_trkseg_trkpt_ele, | |
67 | tt_trk_trkseg_trkpt_time, | |
a2817d3c QT |
68 | /* extended */ |
69 | tt_trk_trkseg_trkpt_course, | |
70 | tt_trk_trkseg_trkpt_speed, | |
71 | tt_trk_trkseg_trkpt_fix, | |
72 | tt_trk_trkseg_trkpt_sat, | |
bf35388d | 73 | |
4a42b254 T |
74 | tt_trk_trkseg_trkpt_hdop, |
75 | tt_trk_trkseg_trkpt_vdop, | |
76 | tt_trk_trkseg_trkpt_pdop, | |
77 | ||
bf35388d EB |
78 | tt_waypoint, |
79 | tt_waypoint_coord, | |
80 | tt_waypoint_name, | |
8c4f1350 EB |
81 | } tag_type; |
82 | ||
83 | typedef struct tag_mapping { | |
84 | tag_type tag_type; /* enum from above for this tag */ | |
85 | const char *tag_name; /* xpath-ish tag name */ | |
86 | } tag_mapping; | |
87 | ||
0b72c435 OK |
88 | typedef struct { |
89 | GpxWritingOptions *options; | |
90 | FILE *file; | |
91 | } GpxWritingContext; | |
92 | ||
8c4f1350 EB |
93 | /* |
94 | * xpath(ish) mappings between full tag paths and internal identifers. | |
95 | * These appear in the order they appear in the GPX specification. | |
96 | * If it's not a tag we explictly handle, it doesn't go here. | |
97 | */ | |
98 | ||
99 | tag_mapping tag_path_map[] = { | |
8c4f1350 EB |
100 | |
101 | { tt_wpt, "/gpx/wpt" }, | |
bf35388d EB |
102 | |
103 | { tt_waypoint, "/loc/waypoint" }, | |
104 | { tt_waypoint_coord, "/loc/waypoint/coord" }, | |
105 | { tt_waypoint_name, "/loc/waypoint/name" }, | |
106 | ||
8c4f1350 EB |
107 | { tt_wpt_ele, "/gpx/wpt/ele" }, |
108 | { tt_wpt_name, "/gpx/wpt/name" }, | |
6b2f262e | 109 | { tt_wpt_cmt, "/gpx/wpt/cmt" }, |
8c4f1350 | 110 | { tt_wpt_desc, "/gpx/wpt/desc" }, |
42c2ac3e | 111 | { tt_wpt_sym, "/gpx/wpt/sym" }, |
08b251ec | 112 | { tt_wpt_sym, "/loc/waypoint/type" }, |
8c4f1350 EB |
113 | { tt_wpt_link, "/gpx/wpt/link" }, /* GPX 1.1 */ |
114 | ||
115 | { tt_trk, "/gpx/trk" }, | |
561e6ad0 | 116 | { tt_trk, "/gpx/rte" }, |
8c4f1350 | 117 | { tt_trk_name, "/gpx/trk/name" }, |
6b2f262e | 118 | { tt_trk_cmt, "/gpx/trk/cmt" }, |
8c4f1350 EB |
119 | { tt_trk_desc, "/gpx/trk/desc" }, |
120 | { tt_trk_trkseg, "/gpx/trk/trkseg" }, | |
8c4f1350 | 121 | { tt_trk_trkseg_trkpt, "/gpx/trk/trkseg/trkpt" }, |
561e6ad0 | 122 | { tt_trk_trkseg_trkpt, "/gpx/rte/rtept" }, |
8c4f1350 EB |
123 | { tt_trk_trkseg_trkpt_ele, "/gpx/trk/trkseg/trkpt/ele" }, |
124 | { tt_trk_trkseg_trkpt_time, "/gpx/trk/trkseg/trkpt/time" }, | |
a2817d3c QT |
125 | /* extended */ |
126 | { tt_trk_trkseg_trkpt_course, "/gpx/trk/trkseg/trkpt/course" }, | |
127 | { tt_trk_trkseg_trkpt_speed, "/gpx/trk/trkseg/trkpt/speed" }, | |
128 | { tt_trk_trkseg_trkpt_fix, "/gpx/trk/trkseg/trkpt/fix" }, | |
129 | { tt_trk_trkseg_trkpt_sat, "/gpx/trk/trkseg/trkpt/sat" }, | |
8c4f1350 | 130 | |
4a42b254 T |
131 | { tt_trk_trkseg_trkpt_hdop, "/gpx/trk/trkseg/trkpt/hdop" }, |
132 | { tt_trk_trkseg_trkpt_vdop, "/gpx/trk/trkseg/trkpt/vdop" }, | |
133 | { tt_trk_trkseg_trkpt_pdop, "/gpx/trk/trkseg/trkpt/pdop" }, | |
8c4f1350 EB |
134 | {0} |
135 | }; | |
136 | ||
137 | static tag_type get_tag(const char *t) | |
138 | { | |
139 | tag_mapping *tm; | |
140 | for (tm = tag_path_map; tm->tag_type != 0; tm++) | |
141 | if (0 == strcmp(tm->tag_name, t)) | |
142 | return tm->tag_type; | |
143 | return tt_unknown; | |
144 | } | |
145 | ||
146 | /******************************************/ | |
147 | ||
148 | tag_type current_tag = tt_unknown; | |
149 | GString *xpath = NULL; | |
150 | GString *c_cdata = NULL; | |
151 | ||
152 | /* current ("c_") objects */ | |
153 | VikTrackpoint *c_tp = NULL; | |
154 | VikWaypoint *c_wp = NULL; | |
155 | VikTrack *c_tr = NULL; | |
156 | ||
157 | gchar *c_wp_name = NULL; | |
158 | gchar *c_tr_name = NULL; | |
159 | ||
160 | /* temporary things so we don't have to create them lots of times */ | |
161 | const gchar *c_slat, *c_slon; | |
162 | struct LatLon c_ll; | |
163 | ||
164 | /* specialty flags / etc */ | |
165 | gboolean f_tr_newseg; | |
166 | guint unnamed_waypoints = 0; | |
167 | guint unnamed_tracks = 0; | |
168 | ||
169 | ||
170 | static const char *get_attr ( const char **attr, const char *key ) | |
171 | { | |
172 | while ( *attr ) { | |
173 | if ( strcmp(*attr,key) == 0 ) | |
174 | return *(attr + 1); | |
175 | attr += 2; | |
176 | } | |
177 | return NULL; | |
178 | } | |
179 | ||
180 | static gboolean set_c_ll ( const char **attr ) | |
181 | { | |
182 | if ( (c_slat = get_attr ( attr, "lat" )) && (c_slon = get_attr ( attr, "lon" )) ) { | |
d1cd12c0 T |
183 | c_ll.lat = g_ascii_strtod(c_slat, NULL); |
184 | c_ll.lon = g_ascii_strtod(c_slon, NULL); | |
8c4f1350 EB |
185 | return TRUE; |
186 | } | |
187 | return FALSE; | |
188 | } | |
189 | ||
190 | static void gpx_start(VikTrwLayer *vtl, const char *el, const char **attr) | |
191 | { | |
bf35388d EB |
192 | static const gchar *tmp; |
193 | ||
8c4f1350 EB |
194 | g_string_append_c ( xpath, '/' ); |
195 | g_string_append ( xpath, el ); | |
196 | current_tag = get_tag ( xpath->str ); | |
197 | ||
198 | switch ( current_tag ) { | |
199 | ||
200 | case tt_wpt: | |
201 | if ( set_c_ll( attr ) ) { | |
202 | c_wp = vik_waypoint_new (); | |
0b9f279d RN |
203 | c_wp->visible = TRUE; |
204 | if ( get_attr ( attr, "hidden" ) ) | |
205 | c_wp->visible = FALSE; | |
8c4f1350 EB |
206 | |
207 | vik_coord_load_from_latlon ( &(c_wp->coord), vik_trw_layer_get_coord_mode ( vtl ), &c_ll ); | |
208 | } | |
209 | break; | |
210 | ||
211 | case tt_trk: | |
212 | c_tr = vik_track_new (); | |
0b9f279d RN |
213 | c_tr->visible = TRUE; |
214 | if ( get_attr ( attr, "hidden" ) ) | |
215 | c_tr->visible = FALSE; | |
8c4f1350 EB |
216 | break; |
217 | ||
218 | case tt_trk_trkseg: | |
219 | f_tr_newseg = TRUE; | |
220 | break; | |
221 | ||
222 | case tt_trk_trkseg_trkpt: | |
223 | if ( set_c_ll( attr ) ) { | |
224 | c_tp = vik_trackpoint_new (); | |
8c4f1350 EB |
225 | vik_coord_load_from_latlon ( &(c_tp->coord), vik_trw_layer_get_coord_mode ( vtl ), &c_ll ); |
226 | if ( f_tr_newseg ) { | |
227 | c_tp->newsegment = TRUE; | |
228 | f_tr_newseg = FALSE; | |
229 | } | |
230 | c_tr->trackpoints = g_list_append ( c_tr->trackpoints, c_tp ); | |
231 | } | |
232 | break; | |
233 | ||
234 | case tt_trk_trkseg_trkpt_ele: | |
235 | case tt_trk_trkseg_trkpt_time: | |
6b2f262e | 236 | case tt_wpt_cmt: |
8c4f1350 EB |
237 | case tt_wpt_desc: |
238 | case tt_wpt_name: | |
239 | case tt_wpt_ele: | |
240 | case tt_wpt_link: | |
6b2f262e | 241 | case tt_trk_cmt: |
8c4f1350 EB |
242 | case tt_trk_desc: |
243 | case tt_trk_name: | |
244 | g_string_erase ( c_cdata, 0, -1 ); /* clear the cdata buffer */ | |
bf35388d | 245 | break; |
8c4f1350 | 246 | |
bf35388d EB |
247 | case tt_waypoint: |
248 | c_wp = vik_waypoint_new (); | |
bf35388d EB |
249 | c_wp->visible = TRUE; |
250 | break; | |
251 | ||
252 | case tt_waypoint_coord: | |
253 | if ( set_c_ll( attr ) ) | |
254 | vik_coord_load_from_latlon ( &(c_wp->coord), vik_trw_layer_get_coord_mode ( vtl ), &c_ll ); | |
255 | break; | |
256 | ||
257 | case tt_waypoint_name: | |
258 | if ( ( tmp = get_attr(attr, "id") ) ) { | |
259 | if ( c_wp_name ) | |
260 | g_free ( c_wp_name ); | |
261 | c_wp_name = g_strdup ( tmp ); | |
262 | } | |
263 | g_string_erase ( c_cdata, 0, -1 ); /* clear the cdata buffer for description */ | |
264 | break; | |
265 | ||
8c4f1350 EB |
266 | default: break; |
267 | } | |
268 | } | |
269 | ||
270 | static void gpx_end(VikTrwLayer *vtl, const char *el) | |
271 | { | |
dd81e762 GB |
272 | static GTimeVal tp_time; |
273 | ||
8c4f1350 EB |
274 | g_string_truncate ( xpath, xpath->len - strlen(el) - 1 ); |
275 | ||
276 | switch ( current_tag ) { | |
277 | ||
bf35388d | 278 | case tt_waypoint: |
8c4f1350 EB |
279 | case tt_wpt: |
280 | if ( ! c_wp_name ) | |
281 | c_wp_name = g_strdup_printf("VIKING_WP%d", unnamed_waypoints++); | |
805d282e EB |
282 | vik_trw_layer_filein_add_waypoint ( vtl, c_wp_name, c_wp ); |
283 | g_free ( c_wp_name ); | |
8c4f1350 EB |
284 | c_wp = NULL; |
285 | c_wp_name = NULL; | |
286 | break; | |
287 | ||
288 | case tt_trk: | |
289 | if ( ! c_tr_name ) | |
a20877b7 | 290 | c_tr_name = g_strdup_printf("VIKING_TR%d", unnamed_tracks++); |
805d282e EB |
291 | vik_trw_layer_filein_add_track ( vtl, c_tr_name, c_tr ); |
292 | g_free ( c_tr_name ); | |
8c4f1350 EB |
293 | c_tr = NULL; |
294 | c_tr_name = NULL; | |
295 | break; | |
296 | ||
297 | case tt_wpt_name: | |
298 | if ( c_wp_name ) | |
299 | g_free ( c_wp_name ); | |
300 | c_wp_name = g_strdup ( c_cdata->str ); | |
301 | g_string_erase ( c_cdata, 0, -1 ); | |
302 | break; | |
303 | ||
304 | case tt_trk_name: | |
305 | if ( c_tr_name ) | |
306 | g_free ( c_tr_name ); | |
307 | c_tr_name = g_strdup ( c_cdata->str ); | |
308 | g_string_erase ( c_cdata, 0, -1 ); | |
309 | break; | |
310 | ||
311 | case tt_wpt_ele: | |
d1cd12c0 | 312 | c_wp->altitude = g_ascii_strtod ( c_cdata->str, NULL ); |
8c4f1350 EB |
313 | g_string_erase ( c_cdata, 0, -1 ); |
314 | break; | |
315 | ||
316 | case tt_trk_trkseg_trkpt_ele: | |
d1cd12c0 | 317 | c_tp->altitude = g_ascii_strtod ( c_cdata->str, NULL ); |
8c4f1350 EB |
318 | g_string_erase ( c_cdata, 0, -1 ); |
319 | break; | |
320 | ||
bf35388d | 321 | case tt_waypoint_name: /* .loc name is really description. */ |
8c4f1350 | 322 | case tt_wpt_desc: |
6b2f262e RN |
323 | vik_waypoint_set_description ( c_wp, c_cdata->str ); |
324 | g_string_erase ( c_cdata, 0, -1 ); | |
325 | break; | |
326 | ||
327 | case tt_wpt_cmt: | |
8c4f1350 EB |
328 | vik_waypoint_set_comment ( c_wp, c_cdata->str ); |
329 | g_string_erase ( c_cdata, 0, -1 ); | |
330 | break; | |
331 | ||
332 | case tt_wpt_link: | |
333 | vik_waypoint_set_image ( c_wp, c_cdata->str ); | |
334 | g_string_erase ( c_cdata, 0, -1 ); | |
335 | break; | |
336 | ||
ea3933fc EB |
337 | case tt_wpt_sym: { |
338 | gchar *tmp_lower = g_utf8_strdown(c_cdata->str, -1); /* for things like <type>Geocache</type> */ | |
339 | vik_waypoint_set_symbol ( c_wp, tmp_lower ); | |
340 | g_free ( tmp_lower ); | |
42c2ac3e AF |
341 | g_string_erase ( c_cdata, 0, -1 ); |
342 | break; | |
ea3933fc | 343 | } |
42c2ac3e | 344 | |
8c4f1350 | 345 | case tt_trk_desc: |
6b2f262e RN |
346 | vik_track_set_description ( c_tr, c_cdata->str ); |
347 | g_string_erase ( c_cdata, 0, -1 ); | |
348 | break; | |
349 | ||
350 | case tt_trk_cmt: | |
8c4f1350 EB |
351 | vik_track_set_comment ( c_tr, c_cdata->str ); |
352 | g_string_erase ( c_cdata, 0, -1 ); | |
353 | break; | |
354 | ||
355 | case tt_trk_trkseg_trkpt_time: | |
dd81e762 GB |
356 | if ( g_time_val_from_iso8601(c_cdata->str, &tp_time) ) { |
357 | c_tp->timestamp = tp_time.tv_sec; | |
8c4f1350 EB |
358 | c_tp->has_timestamp = TRUE; |
359 | } | |
360 | g_string_erase ( c_cdata, 0, -1 ); | |
bf35388d | 361 | break; |
8c4f1350 | 362 | |
a2817d3c | 363 | case tt_trk_trkseg_trkpt_course: |
d1cd12c0 | 364 | c_tp->course = g_ascii_strtod ( c_cdata->str, NULL ); |
a2817d3c QT |
365 | g_string_erase ( c_cdata, 0, -1 ); |
366 | break; | |
367 | ||
368 | case tt_trk_trkseg_trkpt_speed: | |
d1cd12c0 | 369 | c_tp->speed = g_ascii_strtod ( c_cdata->str, NULL ); |
a2817d3c QT |
370 | g_string_erase ( c_cdata, 0, -1 ); |
371 | break; | |
372 | ||
373 | case tt_trk_trkseg_trkpt_fix: | |
a2817d3c QT |
374 | if (!strcmp("2d", c_cdata->str)) |
375 | c_tp->fix_mode = VIK_GPS_MODE_2D; | |
376 | else if (!strcmp("3d", c_cdata->str)) | |
377 | c_tp->fix_mode = VIK_GPS_MODE_3D; | |
378 | else /* TODO: more fix modes here */ | |
379 | c_tp->fix_mode = VIK_GPS_MODE_NOT_SEEN; | |
380 | g_string_erase ( c_cdata, 0, -1 ); | |
381 | break; | |
382 | ||
383 | case tt_trk_trkseg_trkpt_sat: | |
a2817d3c QT |
384 | c_tp->nsats = atoi ( c_cdata->str ); |
385 | g_string_erase ( c_cdata, 0, -1 ); | |
386 | break; | |
387 | ||
4a42b254 | 388 | case tt_trk_trkseg_trkpt_hdop: |
4a42b254 T |
389 | c_tp->hdop = g_strtod ( c_cdata->str, NULL ); |
390 | g_string_erase ( c_cdata, 0, -1 ); | |
391 | break; | |
392 | ||
393 | case tt_trk_trkseg_trkpt_vdop: | |
4a42b254 T |
394 | c_tp->vdop = g_strtod ( c_cdata->str, NULL ); |
395 | g_string_erase ( c_cdata, 0, -1 ); | |
396 | break; | |
397 | ||
398 | case tt_trk_trkseg_trkpt_pdop: | |
4a42b254 T |
399 | c_tp->pdop = g_strtod ( c_cdata->str, NULL ); |
400 | g_string_erase ( c_cdata, 0, -1 ); | |
401 | break; | |
402 | ||
8c4f1350 EB |
403 | default: break; |
404 | } | |
405 | ||
406 | current_tag = get_tag ( xpath->str ); | |
407 | } | |
408 | ||
409 | static void gpx_cdata(void *dta, const XML_Char *s, int len) | |
410 | { | |
411 | switch ( current_tag ) { | |
412 | case tt_wpt_name: | |
413 | case tt_trk_name: | |
414 | case tt_wpt_ele: | |
415 | case tt_trk_trkseg_trkpt_ele: | |
6b2f262e | 416 | case tt_wpt_cmt: |
8c4f1350 | 417 | case tt_wpt_desc: |
42c2ac3e | 418 | case tt_wpt_sym: |
8c4f1350 | 419 | case tt_wpt_link: |
6b2f262e | 420 | case tt_trk_cmt: |
8c4f1350 EB |
421 | case tt_trk_desc: |
422 | case tt_trk_trkseg_trkpt_time: | |
a2817d3c QT |
423 | case tt_trk_trkseg_trkpt_course: |
424 | case tt_trk_trkseg_trkpt_speed: | |
425 | case tt_trk_trkseg_trkpt_fix: | |
426 | case tt_trk_trkseg_trkpt_sat: | |
4a42b254 T |
427 | case tt_trk_trkseg_trkpt_hdop: |
428 | case tt_trk_trkseg_trkpt_vdop: | |
429 | case tt_trk_trkseg_trkpt_pdop: | |
bf35388d | 430 | case tt_waypoint_name: /* .loc name is really description. */ |
8c4f1350 EB |
431 | g_string_append_len ( c_cdata, s, len ); |
432 | break; | |
433 | ||
434 | default: break; /* ignore cdata from other things */ | |
435 | } | |
436 | } | |
437 | ||
438 | // make like a "stack" of tag names | |
439 | // like gpspoint's separated like /gpx/wpt/whatever | |
440 | ||
efe9a9c3 | 441 | gboolean a_gpx_read_file( VikTrwLayer *vtl, FILE *f ) { |
8c4f1350 EB |
442 | XML_Parser parser = XML_ParserCreate(NULL); |
443 | int done=0, len; | |
efe9a9c3 | 444 | enum XML_Status status = XML_STATUS_ERROR; |
8c4f1350 EB |
445 | |
446 | XML_SetElementHandler(parser, (XML_StartElementHandler) gpx_start, (XML_EndElementHandler) gpx_end); | |
447 | XML_SetUserData(parser, vtl); /* in the future we could remove all global variables */ | |
448 | XML_SetCharacterDataHandler(parser, (XML_CharacterDataHandler) gpx_cdata); | |
449 | ||
450 | gchar buf[4096]; | |
451 | ||
bf35388d | 452 | g_assert ( f != NULL && vtl != NULL ); |
8c4f1350 EB |
453 | |
454 | xpath = g_string_new ( "" ); | |
455 | c_cdata = g_string_new ( "" ); | |
456 | ||
457 | unnamed_waypoints = 0; | |
458 | unnamed_tracks = 0; | |
459 | ||
460 | while (!done) { | |
461 | len = fread(buf, 1, sizeof(buf)-7, f); | |
462 | done = feof(f) || !len; | |
efe9a9c3 | 463 | status = XML_Parse(parser, buf, len, done); |
8c4f1350 EB |
464 | } |
465 | ||
6278ccc6 | 466 | XML_ParserFree (parser); |
8c4f1350 EB |
467 | g_string_free ( xpath, TRUE ); |
468 | g_string_free ( c_cdata, TRUE ); | |
efe9a9c3 GB |
469 | |
470 | return status != XML_STATUS_ERROR; | |
8c4f1350 | 471 | } |
561e6ad0 EB |
472 | |
473 | /**** entitize from GPSBabel ****/ | |
474 | typedef struct { | |
475 | const char * text; | |
476 | const char * entity; | |
477 | int not_html; | |
478 | } entity_types; | |
479 | ||
480 | static | |
481 | entity_types stdentities[] = { | |
482 | { "&", "&", 0 }, | |
483 | { "'", "'", 1 }, | |
484 | { "<", "<", 0 }, | |
485 | { ">", ">", 0 }, | |
486 | { "\"", """, 0 }, | |
487 | { NULL, NULL, 0 } | |
488 | }; | |
489 | ||
490 | void utf8_to_int( const char *cp, int *bytes, int *value ) | |
491 | { | |
492 | if ( (*cp & 0xe0) == 0xc0 ) { | |
493 | if ( (*(cp+1) & 0xc0) != 0x80 ) goto dodefault; | |
494 | *bytes = 2; | |
495 | *value = ((*cp & 0x1f) << 6) | | |
496 | (*(cp+1) & 0x3f); | |
497 | } | |
498 | else if ( (*cp & 0xf0) == 0xe0 ) { | |
499 | if ( (*(cp+1) & 0xc0) != 0x80 ) goto dodefault; | |
500 | if ( (*(cp+2) & 0xc0) != 0x80 ) goto dodefault; | |
501 | *bytes = 3; | |
502 | *value = ((*cp & 0x0f) << 12) | | |
503 | ((*(cp+1) & 0x3f) << 6) | | |
504 | (*(cp+2) & 0x3f); | |
505 | } | |
506 | else if ( (*cp & 0xf8) == 0xf0 ) { | |
507 | if ( (*(cp+1) & 0xc0) != 0x80 ) goto dodefault; | |
508 | if ( (*(cp+2) & 0xc0) != 0x80 ) goto dodefault; | |
509 | if ( (*(cp+3) & 0xc0) != 0x80 ) goto dodefault; | |
510 | *bytes = 4; | |
511 | *value = ((*cp & 0x07) << 18) | | |
512 | ((*(cp+1) & 0x3f) << 12) | | |
513 | ((*(cp+2) & 0x3f) << 6) | | |
514 | (*(cp+3) & 0x3f); | |
515 | } | |
516 | else if ( (*cp & 0xfc) == 0xf8 ) { | |
517 | if ( (*(cp+1) & 0xc0) != 0x80 ) goto dodefault; | |
518 | if ( (*(cp+2) & 0xc0) != 0x80 ) goto dodefault; | |
519 | if ( (*(cp+3) & 0xc0) != 0x80 ) goto dodefault; | |
520 | if ( (*(cp+4) & 0xc0) != 0x80 ) goto dodefault; | |
521 | *bytes = 5; | |
522 | *value = ((*cp & 0x03) << 24) | | |
523 | ((*(cp+1) & 0x3f) << 18) | | |
524 | ((*(cp+2) & 0x3f) << 12) | | |
525 | ((*(cp+3) & 0x3f) << 6) | | |
526 | (*(cp+4) & 0x3f); | |
527 | } | |
528 | else if ( (*cp & 0xfe) == 0xfc ) { | |
529 | if ( (*(cp+1) & 0xc0) != 0x80 ) goto dodefault; | |
530 | if ( (*(cp+2) & 0xc0) != 0x80 ) goto dodefault; | |
531 | if ( (*(cp+3) & 0xc0) != 0x80 ) goto dodefault; | |
532 | if ( (*(cp+4) & 0xc0) != 0x80 ) goto dodefault; | |
533 | if ( (*(cp+5) & 0xc0) != 0x80 ) goto dodefault; | |
534 | *bytes = 6; | |
535 | *value = ((*cp & 0x01) << 30) | | |
536 | ((*(cp+1) & 0x3f) << 24) | | |
537 | ((*(cp+2) & 0x3f) << 18) | | |
538 | ((*(cp+3) & 0x3f) << 12) | | |
539 | ((*(cp+4) & 0x3f) << 6) | | |
540 | (*(cp+5) & 0x3f); | |
541 | } | |
542 | else { | |
543 | dodefault: | |
544 | *bytes = 1; | |
545 | *value = (unsigned char)*cp; | |
546 | } | |
547 | } | |
548 | ||
549 | static | |
550 | char * | |
551 | entitize(const char * str) | |
552 | { | |
553 | int elen, ecount, nsecount; | |
554 | entity_types *ep; | |
555 | const char * cp; | |
556 | char * p, * tmp, * xstr; | |
557 | ||
558 | char tmpsub[20]; | |
559 | int bytes = 0; | |
560 | int value = 0; | |
561 | ep = stdentities; | |
562 | elen = ecount = nsecount = 0; | |
563 | ||
564 | /* figure # of entity replacements and additional size. */ | |
565 | while (ep->text) { | |
566 | cp = str; | |
567 | while ((cp = strstr(cp, ep->text)) != NULL) { | |
568 | elen += strlen(ep->entity) - strlen(ep->text); | |
569 | ecount++; | |
570 | cp += strlen(ep->text); | |
571 | } | |
572 | ep++; | |
573 | } | |
574 | ||
575 | /* figure the same for other than standard entities (i.e. anything | |
576 | * that isn't in the range U+0000 to U+007F */ | |
577 | for ( cp = str; *cp; cp++ ) { | |
578 | if ( *cp & 0x80 ) { | |
579 | ||
580 | utf8_to_int( cp, &bytes, &value ); | |
581 | cp += bytes-1; | |
582 | elen += sprintf( tmpsub, "&#x%x;", value ) - bytes; | |
583 | nsecount++; | |
584 | } | |
585 | } | |
586 | ||
587 | /* enough space for the whole string plus entity replacements, if any */ | |
588 | tmp = g_malloc((strlen(str) + elen + 1)); | |
589 | strcpy(tmp, str); | |
590 | ||
591 | /* no entity replacements */ | |
592 | if (ecount == 0 && nsecount == 0) | |
593 | return (tmp); | |
594 | ||
595 | if ( ecount != 0 ) { | |
596 | for (ep = stdentities; ep->text; ep++) { | |
597 | p = tmp; | |
598 | while ((p = strstr(p, ep->text)) != NULL) { | |
599 | elen = strlen(ep->entity); | |
600 | ||
601 | xstr = g_strdup(p + strlen(ep->text)); | |
602 | ||
603 | strcpy(p, ep->entity); | |
604 | strcpy(p + elen, xstr); | |
605 | ||
606 | g_free(xstr); | |
607 | ||
608 | p += elen; | |
609 | } | |
610 | } | |
611 | } | |
612 | ||
613 | if ( nsecount != 0 ) { | |
614 | p = tmp; | |
615 | while (*p) { | |
616 | if ( *p & 0x80 ) { | |
617 | utf8_to_int( p, &bytes, &value ); | |
618 | if ( p[bytes] ) { | |
619 | xstr = g_strdup( p + bytes ); | |
620 | } | |
621 | else { | |
622 | xstr = NULL; | |
623 | } | |
624 | sprintf( p, "&#x%x;", value ); | |
625 | p = p+strlen(p); | |
626 | if ( xstr ) { | |
627 | strcpy( p, xstr ); | |
628 | g_free(xstr); | |
629 | } | |
630 | } | |
631 | else { | |
632 | p++; | |
633 | } | |
634 | } | |
635 | } | |
636 | return (tmp); | |
637 | } | |
638 | /**** end GPSBabel code ****/ | |
639 | ||
640 | /* export GPX */ | |
8904c540 | 641 | |
c9570f86 | 642 | static void gpx_write_waypoint ( VikWaypoint *wp, GpxWritingContext *context ) |
561e6ad0 | 643 | { |
208d2084 RN |
644 | // Don't write invisible waypoints when specified |
645 | if (context->options && !context->options->hidden && !wp->visible) | |
646 | return; | |
647 | ||
0b72c435 | 648 | FILE *f = context->file; |
561e6ad0 | 649 | static struct LatLon ll; |
8904c540 | 650 | gchar *s_lat,*s_lon; |
561e6ad0 EB |
651 | gchar *tmp; |
652 | vik_coord_to_latlon ( &(wp->coord), &ll ); | |
161aa492 EB |
653 | s_lat = a_coords_dtostr( ll.lat ); |
654 | s_lon = a_coords_dtostr( ll.lon ); | |
208d2084 RN |
655 | // NB 'hidden' is not part of any GPX standard - this appears to be a made up Viking 'extension' |
656 | // luckily most other GPX processing software ignores things they don't understand | |
8904c540 GB |
657 | fprintf ( f, "<wpt lat=\"%s\" lon=\"%s\"%s>\n", |
658 | s_lat, s_lon, wp->visible ? "" : " hidden=\"hidden\"" ); | |
659 | g_free ( s_lat ); | |
660 | g_free ( s_lon ); | |
561e6ad0 | 661 | |
c9570f86 RN |
662 | // Sanity clause |
663 | if ( wp->name ) | |
664 | tmp = entitize ( wp->name ); | |
665 | else | |
666 | tmp = g_strdup ("waypoint"); | |
667 | ||
561e6ad0 EB |
668 | fprintf ( f, " <name>%s</name>\n", tmp ); |
669 | g_free ( tmp); | |
670 | ||
671 | if ( wp->altitude != VIK_DEFAULT_ALTITUDE ) | |
8904c540 | 672 | { |
161aa492 | 673 | tmp = a_coords_dtostr ( wp->altitude ); |
8904c540 GB |
674 | fprintf ( f, " <ele>%s</ele>\n", tmp ); |
675 | g_free ( tmp ); | |
676 | } | |
561e6ad0 EB |
677 | if ( wp->comment ) |
678 | { | |
679 | tmp = entitize(wp->comment); | |
6b2f262e RN |
680 | fprintf ( f, " <cmt>%s</cmt>\n", tmp ); |
681 | g_free ( tmp ); | |
682 | } | |
683 | if ( wp->description ) | |
684 | { | |
685 | tmp = entitize(wp->description); | |
561e6ad0 EB |
686 | fprintf ( f, " <desc>%s</desc>\n", tmp ); |
687 | g_free ( tmp ); | |
688 | } | |
689 | if ( wp->image ) | |
690 | { | |
691 | tmp = entitize(wp->image); | |
692 | fprintf ( f, " <link>%s</link>\n", tmp ); | |
693 | g_free ( tmp ); | |
694 | } | |
42c2ac3e AF |
695 | if ( wp->symbol ) |
696 | { | |
697 | tmp = entitize(wp->symbol); | |
698 | fprintf ( f, " <sym>%s</sym>\n", tmp); | |
699 | g_free ( tmp ); | |
700 | } | |
701 | ||
561e6ad0 EB |
702 | fprintf ( f, "</wpt>\n" ); |
703 | } | |
704 | ||
0b72c435 | 705 | static void gpx_write_trackpoint ( VikTrackpoint *tp, GpxWritingContext *context ) |
561e6ad0 | 706 | { |
0b72c435 | 707 | FILE *f = context->file; |
561e6ad0 | 708 | static struct LatLon ll; |
4a42b254 | 709 | gchar *s_lat,*s_lon, *s_alt, *s_dop; |
dd81e762 | 710 | gchar *time_iso8601; |
561e6ad0 EB |
711 | vik_coord_to_latlon ( &(tp->coord), &ll ); |
712 | ||
713 | if ( tp->newsegment ) | |
714 | fprintf ( f, " </trkseg>\n <trkseg>\n" ); | |
715 | ||
161aa492 EB |
716 | s_lat = a_coords_dtostr( ll.lat ); |
717 | s_lon = a_coords_dtostr( ll.lon ); | |
8904c540 | 718 | fprintf ( f, " <trkpt lat=\"%s\" lon=\"%s\">\n", s_lat, s_lon ); |
0b72c435 OK |
719 | g_free ( s_lat ); s_lat = NULL; |
720 | g_free ( s_lon ); s_lon = NULL; | |
561e6ad0 | 721 | |
0b72c435 | 722 | s_alt = NULL; |
561e6ad0 | 723 | if ( tp->altitude != VIK_DEFAULT_ALTITUDE ) |
8904c540 | 724 | { |
161aa492 | 725 | s_alt = a_coords_dtostr ( tp->altitude ); |
8904c540 | 726 | } |
0b72c435 | 727 | else if ( context->options != NULL && context->options->force_ele ) |
36179a2e OK |
728 | { |
729 | s_alt = a_coords_dtostr ( 0 ); | |
730 | } | |
0b72c435 OK |
731 | if (s_alt != NULL) |
732 | fprintf ( f, " <ele>%s</ele>\n", s_alt ); | |
733 | g_free ( s_alt ); s_alt = NULL; | |
36179a2e | 734 | |
dd81e762 | 735 | time_iso8601 = NULL; |
561e6ad0 | 736 | if ( tp->has_timestamp ) { |
dd81e762 GB |
737 | GTimeVal timestamp; |
738 | timestamp.tv_sec = tp->timestamp; | |
61f37ac9 | 739 | timestamp.tv_usec = 0; |
dd81e762 GB |
740 | |
741 | time_iso8601 = g_time_val_to_iso8601 ( ×tamp ); | |
561e6ad0 | 742 | } |
0b72c435 | 743 | else if ( context->options != NULL && context->options->force_time ) |
36179a2e | 744 | { |
dd81e762 GB |
745 | GTimeVal current; |
746 | g_get_current_time ( ¤t ); | |
36179a2e | 747 | |
dd81e762 | 748 | time_iso8601 = g_time_val_to_iso8601 ( ¤t ); |
36179a2e | 749 | } |
dd81e762 GB |
750 | if ( time_iso8601 != NULL ) |
751 | fprintf ( f, " <time>%s</time>\n", time_iso8601 ); | |
752 | g_free(time_iso8601); | |
753 | time_iso8601 = NULL; | |
36179a2e | 754 | |
ad54cd32 T |
755 | if (!isnan(tp->course)) { |
756 | gchar *s_course = a_coords_dtostr(tp->course); | |
757 | fprintf ( f, " <course>%s</course>\n", s_course ); | |
758 | g_free(s_course); | |
a2817d3c | 759 | } |
ad54cd32 T |
760 | if (!isnan(tp->speed)) { |
761 | gchar *s_speed = a_coords_dtostr(tp->speed); | |
762 | fprintf ( f, " <speed>%s</speed>\n", s_speed ); | |
763 | g_free(s_speed); | |
764 | } | |
765 | if (tp->fix_mode == VIK_GPS_MODE_2D) | |
766 | fprintf ( f, " <fix>2d</fix>\n"); | |
767 | if (tp->fix_mode == VIK_GPS_MODE_3D) | |
768 | fprintf ( f, " <fix>3d</fix>\n"); | |
769 | if (tp->nsats > 0) | |
770 | fprintf ( f, " <sat>%d</sat>\n", tp->nsats ); | |
a2817d3c | 771 | |
4a42b254 T |
772 | s_dop = NULL; |
773 | if ( tp->hdop != VIK_DEFAULT_DOP ) | |
774 | { | |
775 | s_dop = a_coords_dtostr ( tp->hdop ); | |
776 | } | |
777 | if (s_dop != NULL) | |
778 | fprintf ( f, " <hdop>%s</hdop>\n", s_dop ); | |
779 | g_free ( s_dop ); s_dop = NULL; | |
780 | ||
781 | if ( tp->vdop != VIK_DEFAULT_DOP ) | |
782 | { | |
783 | s_dop = a_coords_dtostr ( tp->vdop ); | |
784 | } | |
785 | if (s_dop != NULL) | |
786 | fprintf ( f, " <vdop>%s</vdop>\n", s_dop ); | |
787 | g_free ( s_dop ); s_dop = NULL; | |
788 | ||
789 | if ( tp->pdop != VIK_DEFAULT_DOP ) | |
790 | { | |
791 | s_dop = a_coords_dtostr ( tp->pdop ); | |
792 | } | |
793 | if (s_dop != NULL) | |
794 | fprintf ( f, " <pdop>%s</pdop>\n", s_dop ); | |
795 | g_free ( s_dop ); s_dop = NULL; | |
796 | ||
797 | ||
561e6ad0 EB |
798 | fprintf ( f, " </trkpt>\n" ); |
799 | } | |
800 | ||
801 | ||
ce4bd1cf | 802 | static void gpx_write_track ( VikTrack *t, GpxWritingContext *context ) |
561e6ad0 | 803 | { |
208d2084 RN |
804 | // Don't write invisible tracks when specified |
805 | if (context->options && !context->options->hidden && !t->visible) | |
806 | return; | |
807 | ||
0b72c435 | 808 | FILE *f = context->file; |
561e6ad0 | 809 | gchar *tmp; |
494eb388 | 810 | gboolean first_tp_is_newsegment = FALSE; /* must temporarily make it not so, but we want to restore state. not that it matters. */ |
561e6ad0 | 811 | |
ce4bd1cf RN |
812 | // Sanity clause |
813 | if ( t->name ) | |
814 | tmp = entitize ( t->name ); | |
815 | else | |
816 | tmp = g_strdup ("track"); | |
817 | ||
208d2084 RN |
818 | // NB 'hidden' is not part of any GPX standard - this appears to be a made up Viking 'extension' |
819 | // luckily most other GPX processing software ignores things they don't understand | |
561e6ad0 EB |
820 | fprintf ( f, "<trk%s>\n <name>%s</name>\n", t->visible ? "" : " hidden=\"hidden\"", tmp ); |
821 | g_free ( tmp ); | |
822 | ||
823 | if ( t->comment ) | |
824 | { | |
825 | tmp = entitize ( t->comment ); | |
6b2f262e RN |
826 | fprintf ( f, " <cmt>%s</cmt>\n", tmp ); |
827 | g_free ( tmp ); | |
828 | } | |
829 | ||
830 | if ( t->description ) | |
831 | { | |
832 | tmp = entitize ( t->description ); | |
561e6ad0 EB |
833 | fprintf ( f, " <desc>%s</desc>\n", tmp ); |
834 | g_free ( tmp ); | |
835 | } | |
561e6ad0 EB |
836 | fprintf ( f, " <trkseg>\n" ); |
837 | ||
838 | if ( t->trackpoints && t->trackpoints->data ) { | |
839 | first_tp_is_newsegment = VIK_TRACKPOINT(t->trackpoints->data)->newsegment; | |
840 | VIK_TRACKPOINT(t->trackpoints->data)->newsegment = FALSE; /* so we won't write </trkseg><trkseg> already */ | |
0b72c435 | 841 | g_list_foreach ( t->trackpoints, (GFunc) gpx_write_trackpoint, context ); |
561e6ad0 | 842 | VIK_TRACKPOINT(t->trackpoints->data)->newsegment = first_tp_is_newsegment; /* restore state */ |
494eb388 | 843 | } |
561e6ad0 EB |
844 | |
845 | fprintf ( f, "</trkseg>\n</trk>\n" ); | |
846 | } | |
847 | ||
5092de80 | 848 | static void gpx_write_header( FILE *f ) |
561e6ad0 EB |
849 | { |
850 | fprintf(f, "<?xml version=\"1.0\"?>\n" | |
851 | "<gpx version=\"1.0\" creator=\"Viking -- http://viking.sf.net/\"\n" | |
852 | "xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n" | |
853 | "xmlns=\"http://www.topografix.com/GPX/1/0\"\n" | |
854 | "xsi:schemaLocation=\"http://www.topografix.com/GPX/1/0 http://www.topografix.com/GPX/1/0/gpx.xsd\">\n"); | |
5092de80 GB |
855 | } |
856 | ||
857 | static void gpx_write_footer( FILE *f ) | |
858 | { | |
561e6ad0 | 859 | fprintf(f, "</gpx>\n"); |
5092de80 | 860 | } |
561e6ad0 | 861 | |
c9570f86 | 862 | static int gpx_waypoint_compare(const void *x, const void *y) |
eab858a1 | 863 | { |
c9570f86 RN |
864 | VikWaypoint *a = (VikWaypoint *)x; |
865 | VikWaypoint *b = (VikWaypoint *)y; | |
eab858a1 EB |
866 | return strcmp(a->name,b->name); |
867 | } | |
868 | ||
e3449376 | 869 | /* Function to compare two tracks by their first timestamp */ |
0dabdc4f | 870 | static int gpx_track_compare_timestamp (const void *x, const void *y) |
e3449376 | 871 | { |
0dabdc4f RN |
872 | VikTrack *a = (VikTrack *)x; |
873 | VikTrack *b = (VikTrack *)y; | |
874 | ||
875 | VikTrackpoint *tpa = NULL; | |
876 | VikTrackpoint *tpb = NULL; | |
877 | ||
878 | if ( a->trackpoints ) | |
879 | tpa = VIK_TRACKPOINT(g_list_first(a->trackpoints)->data); | |
880 | ||
881 | if ( b->trackpoints ) | |
882 | tpb = VIK_TRACKPOINT(g_list_first(b->trackpoints)->data); | |
883 | ||
884 | if ( tpa && tpb ) { | |
885 | if ( tpa->timestamp < tpb->timestamp ) | |
886 | return -1; | |
887 | if ( tpa->timestamp > tpb->timestamp ) | |
888 | return 1; | |
e3449376 | 889 | } |
0dabdc4f RN |
890 | |
891 | if ( tpa && !tpb ) | |
e3449376 | 892 | return 1; |
0dabdc4f RN |
893 | |
894 | if ( !tpa && tpb ) | |
895 | return -1; | |
896 | ||
e3449376 HR |
897 | return 0; |
898 | } | |
899 | ||
208d2084 | 900 | void a_gpx_write_file ( VikTrwLayer *vtl, FILE *f, GpxWritingOptions *options ) |
0b72c435 OK |
901 | { |
902 | GpxWritingContext context = { options, f }; | |
eab858a1 | 903 | |
5092de80 | 904 | gpx_write_header ( f ); |
eab858a1 | 905 | |
c9570f86 RN |
906 | // gather waypoints in a list, then sort |
907 | // g_hash_table_get_values: glib 2.14+ | |
908 | GList *gl = g_hash_table_get_values ( vik_trw_layer_get_waypoints ( vtl ) ); | |
909 | gl = g_list_sort ( gl, gpx_waypoint_compare ); | |
0b72c435 | 910 | |
c9570f86 RN |
911 | GList *iter; |
912 | for (iter = g_list_first (gl); iter != NULL; iter = g_list_next (iter)) { | |
913 | gpx_write_waypoint ( (VikWaypoint*)iter->data, &context ); | |
914 | } | |
eab858a1 | 915 | |
c9570f86 | 916 | g_list_free ( gl ); |
e3449376 | 917 | /* Sort by timestamp */ |
ce4bd1cf | 918 | gl = g_hash_table_get_values ( vik_trw_layer_get_tracks ( vtl ) ); |
0dabdc4f | 919 | gl = g_list_sort ( gl, gpx_track_compare_timestamp ); |
ce4bd1cf RN |
920 | |
921 | for (iter = g_list_first (gl); iter != NULL; iter = g_list_next (iter)) { | |
922 | gpx_write_track ( (VikTrack*)iter->data, &context ); | |
e3449376 | 923 | } |
ce4bd1cf RN |
924 | |
925 | g_list_free ( gl ); | |
926 | ||
5092de80 GB |
927 | gpx_write_footer ( f ); |
928 | } | |
561e6ad0 | 929 | |
208d2084 | 930 | void a_gpx_write_track_file ( VikTrack *trk, FILE *f, GpxWritingOptions *options ) |
0b72c435 OK |
931 | { |
932 | GpxWritingContext context = {options, f}; | |
5092de80 | 933 | gpx_write_header ( f ); |
ce4bd1cf | 934 | gpx_write_track ( trk, &context ); |
5092de80 | 935 | gpx_write_footer ( f ); |
561e6ad0 | 936 | } |