]>
Commit | Line | Data |
---|---|---|
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 EB |
68 | |
69 | tt_waypoint, | |
70 | tt_waypoint_coord, | |
71 | tt_waypoint_name, | |
8c4f1350 EB |
72 | } tag_type; |
73 | ||
74 | typedef struct tag_mapping { | |
75 | tag_type tag_type; /* enum from above for this tag */ | |
76 | const char *tag_name; /* xpath-ish tag name */ | |
77 | } tag_mapping; | |
78 | ||
0b72c435 OK |
79 | typedef struct { |
80 | GpxWritingOptions *options; | |
81 | FILE *file; | |
82 | } GpxWritingContext; | |
83 | ||
8c4f1350 EB |
84 | /* |
85 | * xpath(ish) mappings between full tag paths and internal identifers. | |
86 | * These appear in the order they appear in the GPX specification. | |
87 | * If it's not a tag we explictly handle, it doesn't go here. | |
88 | */ | |
89 | ||
90 | tag_mapping tag_path_map[] = { | |
8c4f1350 EB |
91 | |
92 | { tt_wpt, "/gpx/wpt" }, | |
bf35388d EB |
93 | |
94 | { tt_waypoint, "/loc/waypoint" }, | |
95 | { tt_waypoint_coord, "/loc/waypoint/coord" }, | |
96 | { tt_waypoint_name, "/loc/waypoint/name" }, | |
97 | ||
8c4f1350 EB |
98 | { tt_wpt_ele, "/gpx/wpt/ele" }, |
99 | { tt_wpt_name, "/gpx/wpt/name" }, | |
100 | { tt_wpt_desc, "/gpx/wpt/desc" }, | |
42c2ac3e | 101 | { tt_wpt_sym, "/gpx/wpt/sym" }, |
08b251ec | 102 | { tt_wpt_sym, "/loc/waypoint/type" }, |
8c4f1350 EB |
103 | { tt_wpt_link, "/gpx/wpt/link" }, /* GPX 1.1 */ |
104 | ||
105 | { tt_trk, "/gpx/trk" }, | |
561e6ad0 | 106 | { tt_trk, "/gpx/rte" }, |
8c4f1350 EB |
107 | { tt_trk_name, "/gpx/trk/name" }, |
108 | { tt_trk_desc, "/gpx/trk/desc" }, | |
109 | { tt_trk_trkseg, "/gpx/trk/trkseg" }, | |
8c4f1350 | 110 | { tt_trk_trkseg_trkpt, "/gpx/trk/trkseg/trkpt" }, |
561e6ad0 | 111 | { tt_trk_trkseg_trkpt, "/gpx/rte/rtept" }, |
8c4f1350 EB |
112 | { tt_trk_trkseg_trkpt_ele, "/gpx/trk/trkseg/trkpt/ele" }, |
113 | { tt_trk_trkseg_trkpt_time, "/gpx/trk/trkseg/trkpt/time" }, | |
a2817d3c QT |
114 | /* extended */ |
115 | { tt_trk_trkseg_trkpt_course, "/gpx/trk/trkseg/trkpt/course" }, | |
116 | { tt_trk_trkseg_trkpt_speed, "/gpx/trk/trkseg/trkpt/speed" }, | |
117 | { tt_trk_trkseg_trkpt_fix, "/gpx/trk/trkseg/trkpt/fix" }, | |
118 | { tt_trk_trkseg_trkpt_sat, "/gpx/trk/trkseg/trkpt/sat" }, | |
8c4f1350 EB |
119 | |
120 | {0} | |
121 | }; | |
122 | ||
123 | static tag_type get_tag(const char *t) | |
124 | { | |
125 | tag_mapping *tm; | |
126 | for (tm = tag_path_map; tm->tag_type != 0; tm++) | |
127 | if (0 == strcmp(tm->tag_name, t)) | |
128 | return tm->tag_type; | |
129 | return tt_unknown; | |
130 | } | |
131 | ||
132 | /******************************************/ | |
133 | ||
134 | tag_type current_tag = tt_unknown; | |
135 | GString *xpath = NULL; | |
136 | GString *c_cdata = NULL; | |
137 | ||
138 | /* current ("c_") objects */ | |
139 | VikTrackpoint *c_tp = NULL; | |
140 | VikWaypoint *c_wp = NULL; | |
141 | VikTrack *c_tr = NULL; | |
142 | ||
143 | gchar *c_wp_name = NULL; | |
144 | gchar *c_tr_name = NULL; | |
145 | ||
146 | /* temporary things so we don't have to create them lots of times */ | |
147 | const gchar *c_slat, *c_slon; | |
148 | struct LatLon c_ll; | |
149 | ||
150 | /* specialty flags / etc */ | |
151 | gboolean f_tr_newseg; | |
152 | guint unnamed_waypoints = 0; | |
153 | guint unnamed_tracks = 0; | |
154 | ||
155 | ||
156 | static const char *get_attr ( const char **attr, const char *key ) | |
157 | { | |
158 | while ( *attr ) { | |
159 | if ( strcmp(*attr,key) == 0 ) | |
160 | return *(attr + 1); | |
161 | attr += 2; | |
162 | } | |
163 | return NULL; | |
164 | } | |
165 | ||
166 | static gboolean set_c_ll ( const char **attr ) | |
167 | { | |
168 | if ( (c_slat = get_attr ( attr, "lat" )) && (c_slon = get_attr ( attr, "lon" )) ) { | |
3a96ce6b EB |
169 | c_ll.lat = g_strtod(c_slat, NULL); |
170 | c_ll.lon = g_strtod(c_slon, NULL); | |
8c4f1350 EB |
171 | return TRUE; |
172 | } | |
173 | return FALSE; | |
174 | } | |
175 | ||
176 | static void gpx_start(VikTrwLayer *vtl, const char *el, const char **attr) | |
177 | { | |
bf35388d EB |
178 | static const gchar *tmp; |
179 | ||
8c4f1350 EB |
180 | g_string_append_c ( xpath, '/' ); |
181 | g_string_append ( xpath, el ); | |
182 | current_tag = get_tag ( xpath->str ); | |
183 | ||
184 | switch ( current_tag ) { | |
185 | ||
186 | case tt_wpt: | |
187 | if ( set_c_ll( attr ) ) { | |
188 | c_wp = vik_waypoint_new (); | |
189 | c_wp->altitude = VIK_DEFAULT_ALTITUDE; | |
190 | if ( ! get_attr ( attr, "hidden" ) ) | |
191 | c_wp->visible = TRUE; | |
192 | ||
193 | vik_coord_load_from_latlon ( &(c_wp->coord), vik_trw_layer_get_coord_mode ( vtl ), &c_ll ); | |
194 | } | |
195 | break; | |
196 | ||
197 | case tt_trk: | |
198 | c_tr = vik_track_new (); | |
199 | if ( ! get_attr ( attr, "hidden" ) ) | |
200 | c_tr->visible = TRUE; | |
201 | break; | |
202 | ||
203 | case tt_trk_trkseg: | |
204 | f_tr_newseg = TRUE; | |
205 | break; | |
206 | ||
207 | case tt_trk_trkseg_trkpt: | |
208 | if ( set_c_ll( attr ) ) { | |
209 | c_tp = vik_trackpoint_new (); | |
210 | c_tp->altitude = VIK_DEFAULT_ALTITUDE; | |
211 | vik_coord_load_from_latlon ( &(c_tp->coord), vik_trw_layer_get_coord_mode ( vtl ), &c_ll ); | |
212 | if ( f_tr_newseg ) { | |
213 | c_tp->newsegment = TRUE; | |
214 | f_tr_newseg = FALSE; | |
215 | } | |
216 | c_tr->trackpoints = g_list_append ( c_tr->trackpoints, c_tp ); | |
217 | } | |
218 | break; | |
219 | ||
220 | case tt_trk_trkseg_trkpt_ele: | |
221 | case tt_trk_trkseg_trkpt_time: | |
222 | case tt_wpt_desc: | |
223 | case tt_wpt_name: | |
224 | case tt_wpt_ele: | |
225 | case tt_wpt_link: | |
226 | case tt_trk_desc: | |
227 | case tt_trk_name: | |
228 | g_string_erase ( c_cdata, 0, -1 ); /* clear the cdata buffer */ | |
bf35388d | 229 | break; |
8c4f1350 | 230 | |
bf35388d EB |
231 | case tt_waypoint: |
232 | c_wp = vik_waypoint_new (); | |
233 | c_wp->altitude = VIK_DEFAULT_ALTITUDE; | |
234 | c_wp->visible = TRUE; | |
235 | break; | |
236 | ||
237 | case tt_waypoint_coord: | |
238 | if ( set_c_ll( attr ) ) | |
239 | vik_coord_load_from_latlon ( &(c_wp->coord), vik_trw_layer_get_coord_mode ( vtl ), &c_ll ); | |
240 | break; | |
241 | ||
242 | case tt_waypoint_name: | |
243 | if ( ( tmp = get_attr(attr, "id") ) ) { | |
244 | if ( c_wp_name ) | |
245 | g_free ( c_wp_name ); | |
246 | c_wp_name = g_strdup ( tmp ); | |
247 | } | |
248 | g_string_erase ( c_cdata, 0, -1 ); /* clear the cdata buffer for description */ | |
249 | break; | |
250 | ||
8c4f1350 EB |
251 | default: break; |
252 | } | |
253 | } | |
254 | ||
255 | static void gpx_end(VikTrwLayer *vtl, const char *el) | |
256 | { | |
dd81e762 GB |
257 | static GTimeVal tp_time; |
258 | ||
8c4f1350 EB |
259 | g_string_truncate ( xpath, xpath->len - strlen(el) - 1 ); |
260 | ||
261 | switch ( current_tag ) { | |
262 | ||
bf35388d | 263 | case tt_waypoint: |
8c4f1350 EB |
264 | case tt_wpt: |
265 | if ( ! c_wp_name ) | |
266 | c_wp_name = g_strdup_printf("VIKING_WP%d", unnamed_waypoints++); | |
805d282e EB |
267 | vik_trw_layer_filein_add_waypoint ( vtl, c_wp_name, c_wp ); |
268 | g_free ( c_wp_name ); | |
8c4f1350 EB |
269 | c_wp = NULL; |
270 | c_wp_name = NULL; | |
271 | break; | |
272 | ||
273 | case tt_trk: | |
274 | if ( ! c_tr_name ) | |
275 | c_tr_name = g_strdup_printf("VIKING_TR%d", unnamed_waypoints++); | |
805d282e EB |
276 | vik_trw_layer_filein_add_track ( vtl, c_tr_name, c_tr ); |
277 | g_free ( c_tr_name ); | |
8c4f1350 EB |
278 | c_tr = NULL; |
279 | c_tr_name = NULL; | |
280 | break; | |
281 | ||
282 | case tt_wpt_name: | |
283 | if ( c_wp_name ) | |
284 | g_free ( c_wp_name ); | |
285 | c_wp_name = g_strdup ( c_cdata->str ); | |
286 | g_string_erase ( c_cdata, 0, -1 ); | |
287 | break; | |
288 | ||
289 | case tt_trk_name: | |
290 | if ( c_tr_name ) | |
291 | g_free ( c_tr_name ); | |
292 | c_tr_name = g_strdup ( c_cdata->str ); | |
293 | g_string_erase ( c_cdata, 0, -1 ); | |
294 | break; | |
295 | ||
296 | case tt_wpt_ele: | |
3a96ce6b | 297 | c_wp->altitude = g_strtod ( c_cdata->str, NULL ); |
8c4f1350 EB |
298 | g_string_erase ( c_cdata, 0, -1 ); |
299 | break; | |
300 | ||
301 | case tt_trk_trkseg_trkpt_ele: | |
3a96ce6b | 302 | c_tp->altitude = g_strtod ( c_cdata->str, NULL ); |
8c4f1350 EB |
303 | g_string_erase ( c_cdata, 0, -1 ); |
304 | break; | |
305 | ||
bf35388d | 306 | case tt_waypoint_name: /* .loc name is really description. */ |
8c4f1350 EB |
307 | case tt_wpt_desc: |
308 | vik_waypoint_set_comment ( c_wp, c_cdata->str ); | |
309 | g_string_erase ( c_cdata, 0, -1 ); | |
310 | break; | |
311 | ||
312 | case tt_wpt_link: | |
313 | vik_waypoint_set_image ( c_wp, c_cdata->str ); | |
314 | g_string_erase ( c_cdata, 0, -1 ); | |
315 | break; | |
316 | ||
ea3933fc EB |
317 | case tt_wpt_sym: { |
318 | gchar *tmp_lower = g_utf8_strdown(c_cdata->str, -1); /* for things like <type>Geocache</type> */ | |
319 | vik_waypoint_set_symbol ( c_wp, tmp_lower ); | |
320 | g_free ( tmp_lower ); | |
42c2ac3e AF |
321 | g_string_erase ( c_cdata, 0, -1 ); |
322 | break; | |
ea3933fc | 323 | } |
42c2ac3e | 324 | |
8c4f1350 EB |
325 | case tt_trk_desc: |
326 | vik_track_set_comment ( c_tr, c_cdata->str ); | |
327 | g_string_erase ( c_cdata, 0, -1 ); | |
328 | break; | |
329 | ||
330 | case tt_trk_trkseg_trkpt_time: | |
dd81e762 GB |
331 | if ( g_time_val_from_iso8601(c_cdata->str, &tp_time) ) { |
332 | c_tp->timestamp = tp_time.tv_sec; | |
8c4f1350 EB |
333 | c_tp->has_timestamp = TRUE; |
334 | } | |
335 | g_string_erase ( c_cdata, 0, -1 ); | |
bf35388d | 336 | break; |
8c4f1350 | 337 | |
a2817d3c QT |
338 | case tt_trk_trkseg_trkpt_course: |
339 | c_tp->extended = TRUE; | |
340 | c_tp->course = g_strtod ( c_cdata->str, NULL ); | |
341 | g_string_erase ( c_cdata, 0, -1 ); | |
342 | break; | |
343 | ||
344 | case tt_trk_trkseg_trkpt_speed: | |
345 | c_tp->extended = TRUE; | |
346 | c_tp->speed = g_strtod ( c_cdata->str, NULL ); | |
347 | g_string_erase ( c_cdata, 0, -1 ); | |
348 | break; | |
349 | ||
350 | case tt_trk_trkseg_trkpt_fix: | |
351 | c_tp->extended = TRUE; | |
352 | if (!strcmp("2d", c_cdata->str)) | |
353 | c_tp->fix_mode = VIK_GPS_MODE_2D; | |
354 | else if (!strcmp("3d", c_cdata->str)) | |
355 | c_tp->fix_mode = VIK_GPS_MODE_3D; | |
356 | else /* TODO: more fix modes here */ | |
357 | c_tp->fix_mode = VIK_GPS_MODE_NOT_SEEN; | |
358 | g_string_erase ( c_cdata, 0, -1 ); | |
359 | break; | |
360 | ||
361 | case tt_trk_trkseg_trkpt_sat: | |
362 | c_tp->extended = TRUE; | |
363 | c_tp->nsats = atoi ( c_cdata->str ); | |
364 | g_string_erase ( c_cdata, 0, -1 ); | |
365 | break; | |
366 | ||
8c4f1350 EB |
367 | default: break; |
368 | } | |
369 | ||
370 | current_tag = get_tag ( xpath->str ); | |
371 | } | |
372 | ||
373 | static void gpx_cdata(void *dta, const XML_Char *s, int len) | |
374 | { | |
375 | switch ( current_tag ) { | |
376 | case tt_wpt_name: | |
377 | case tt_trk_name: | |
378 | case tt_wpt_ele: | |
379 | case tt_trk_trkseg_trkpt_ele: | |
380 | case tt_wpt_desc: | |
42c2ac3e | 381 | case tt_wpt_sym: |
8c4f1350 EB |
382 | case tt_wpt_link: |
383 | case tt_trk_desc: | |
384 | case tt_trk_trkseg_trkpt_time: | |
a2817d3c QT |
385 | case tt_trk_trkseg_trkpt_course: |
386 | case tt_trk_trkseg_trkpt_speed: | |
387 | case tt_trk_trkseg_trkpt_fix: | |
388 | case tt_trk_trkseg_trkpt_sat: | |
bf35388d | 389 | case tt_waypoint_name: /* .loc name is really description. */ |
8c4f1350 EB |
390 | g_string_append_len ( c_cdata, s, len ); |
391 | break; | |
392 | ||
393 | default: break; /* ignore cdata from other things */ | |
394 | } | |
395 | } | |
396 | ||
397 | // make like a "stack" of tag names | |
398 | // like gpspoint's separated like /gpx/wpt/whatever | |
399 | ||
400 | void a_gpx_read_file( VikTrwLayer *vtl, FILE *f ) { | |
401 | XML_Parser parser = XML_ParserCreate(NULL); | |
402 | int done=0, len; | |
403 | ||
404 | XML_SetElementHandler(parser, (XML_StartElementHandler) gpx_start, (XML_EndElementHandler) gpx_end); | |
405 | XML_SetUserData(parser, vtl); /* in the future we could remove all global variables */ | |
406 | XML_SetCharacterDataHandler(parser, (XML_CharacterDataHandler) gpx_cdata); | |
407 | ||
408 | gchar buf[4096]; | |
409 | ||
bf35388d | 410 | g_assert ( f != NULL && vtl != NULL ); |
8c4f1350 EB |
411 | |
412 | xpath = g_string_new ( "" ); | |
413 | c_cdata = g_string_new ( "" ); | |
414 | ||
415 | unnamed_waypoints = 0; | |
416 | unnamed_tracks = 0; | |
417 | ||
418 | while (!done) { | |
419 | len = fread(buf, 1, sizeof(buf)-7, f); | |
420 | done = feof(f) || !len; | |
421 | XML_Parse(parser, buf, len, done); | |
422 | } | |
423 | ||
6278ccc6 | 424 | XML_ParserFree (parser); |
8c4f1350 EB |
425 | g_string_free ( xpath, TRUE ); |
426 | g_string_free ( c_cdata, TRUE ); | |
427 | } | |
561e6ad0 EB |
428 | |
429 | /**** entitize from GPSBabel ****/ | |
430 | typedef struct { | |
431 | const char * text; | |
432 | const char * entity; | |
433 | int not_html; | |
434 | } entity_types; | |
435 | ||
436 | static | |
437 | entity_types stdentities[] = { | |
438 | { "&", "&", 0 }, | |
439 | { "'", "'", 1 }, | |
440 | { "<", "<", 0 }, | |
441 | { ">", ">", 0 }, | |
442 | { "\"", """, 0 }, | |
443 | { NULL, NULL, 0 } | |
444 | }; | |
445 | ||
446 | void utf8_to_int( const char *cp, int *bytes, int *value ) | |
447 | { | |
448 | if ( (*cp & 0xe0) == 0xc0 ) { | |
449 | if ( (*(cp+1) & 0xc0) != 0x80 ) goto dodefault; | |
450 | *bytes = 2; | |
451 | *value = ((*cp & 0x1f) << 6) | | |
452 | (*(cp+1) & 0x3f); | |
453 | } | |
454 | else if ( (*cp & 0xf0) == 0xe0 ) { | |
455 | if ( (*(cp+1) & 0xc0) != 0x80 ) goto dodefault; | |
456 | if ( (*(cp+2) & 0xc0) != 0x80 ) goto dodefault; | |
457 | *bytes = 3; | |
458 | *value = ((*cp & 0x0f) << 12) | | |
459 | ((*(cp+1) & 0x3f) << 6) | | |
460 | (*(cp+2) & 0x3f); | |
461 | } | |
462 | else if ( (*cp & 0xf8) == 0xf0 ) { | |
463 | if ( (*(cp+1) & 0xc0) != 0x80 ) goto dodefault; | |
464 | if ( (*(cp+2) & 0xc0) != 0x80 ) goto dodefault; | |
465 | if ( (*(cp+3) & 0xc0) != 0x80 ) goto dodefault; | |
466 | *bytes = 4; | |
467 | *value = ((*cp & 0x07) << 18) | | |
468 | ((*(cp+1) & 0x3f) << 12) | | |
469 | ((*(cp+2) & 0x3f) << 6) | | |
470 | (*(cp+3) & 0x3f); | |
471 | } | |
472 | else if ( (*cp & 0xfc) == 0xf8 ) { | |
473 | if ( (*(cp+1) & 0xc0) != 0x80 ) goto dodefault; | |
474 | if ( (*(cp+2) & 0xc0) != 0x80 ) goto dodefault; | |
475 | if ( (*(cp+3) & 0xc0) != 0x80 ) goto dodefault; | |
476 | if ( (*(cp+4) & 0xc0) != 0x80 ) goto dodefault; | |
477 | *bytes = 5; | |
478 | *value = ((*cp & 0x03) << 24) | | |
479 | ((*(cp+1) & 0x3f) << 18) | | |
480 | ((*(cp+2) & 0x3f) << 12) | | |
481 | ((*(cp+3) & 0x3f) << 6) | | |
482 | (*(cp+4) & 0x3f); | |
483 | } | |
484 | else if ( (*cp & 0xfe) == 0xfc ) { | |
485 | if ( (*(cp+1) & 0xc0) != 0x80 ) goto dodefault; | |
486 | if ( (*(cp+2) & 0xc0) != 0x80 ) goto dodefault; | |
487 | if ( (*(cp+3) & 0xc0) != 0x80 ) goto dodefault; | |
488 | if ( (*(cp+4) & 0xc0) != 0x80 ) goto dodefault; | |
489 | if ( (*(cp+5) & 0xc0) != 0x80 ) goto dodefault; | |
490 | *bytes = 6; | |
491 | *value = ((*cp & 0x01) << 30) | | |
492 | ((*(cp+1) & 0x3f) << 24) | | |
493 | ((*(cp+2) & 0x3f) << 18) | | |
494 | ((*(cp+3) & 0x3f) << 12) | | |
495 | ((*(cp+4) & 0x3f) << 6) | | |
496 | (*(cp+5) & 0x3f); | |
497 | } | |
498 | else { | |
499 | dodefault: | |
500 | *bytes = 1; | |
501 | *value = (unsigned char)*cp; | |
502 | } | |
503 | } | |
504 | ||
505 | static | |
506 | char * | |
507 | entitize(const char * str) | |
508 | { | |
509 | int elen, ecount, nsecount; | |
510 | entity_types *ep; | |
511 | const char * cp; | |
512 | char * p, * tmp, * xstr; | |
513 | ||
514 | char tmpsub[20]; | |
515 | int bytes = 0; | |
516 | int value = 0; | |
517 | ep = stdentities; | |
518 | elen = ecount = nsecount = 0; | |
519 | ||
520 | /* figure # of entity replacements and additional size. */ | |
521 | while (ep->text) { | |
522 | cp = str; | |
523 | while ((cp = strstr(cp, ep->text)) != NULL) { | |
524 | elen += strlen(ep->entity) - strlen(ep->text); | |
525 | ecount++; | |
526 | cp += strlen(ep->text); | |
527 | } | |
528 | ep++; | |
529 | } | |
530 | ||
531 | /* figure the same for other than standard entities (i.e. anything | |
532 | * that isn't in the range U+0000 to U+007F */ | |
533 | for ( cp = str; *cp; cp++ ) { | |
534 | if ( *cp & 0x80 ) { | |
535 | ||
536 | utf8_to_int( cp, &bytes, &value ); | |
537 | cp += bytes-1; | |
538 | elen += sprintf( tmpsub, "&#x%x;", value ) - bytes; | |
539 | nsecount++; | |
540 | } | |
541 | } | |
542 | ||
543 | /* enough space for the whole string plus entity replacements, if any */ | |
544 | tmp = g_malloc((strlen(str) + elen + 1)); | |
545 | strcpy(tmp, str); | |
546 | ||
547 | /* no entity replacements */ | |
548 | if (ecount == 0 && nsecount == 0) | |
549 | return (tmp); | |
550 | ||
551 | if ( ecount != 0 ) { | |
552 | for (ep = stdentities; ep->text; ep++) { | |
553 | p = tmp; | |
554 | while ((p = strstr(p, ep->text)) != NULL) { | |
555 | elen = strlen(ep->entity); | |
556 | ||
557 | xstr = g_strdup(p + strlen(ep->text)); | |
558 | ||
559 | strcpy(p, ep->entity); | |
560 | strcpy(p + elen, xstr); | |
561 | ||
562 | g_free(xstr); | |
563 | ||
564 | p += elen; | |
565 | } | |
566 | } | |
567 | } | |
568 | ||
569 | if ( nsecount != 0 ) { | |
570 | p = tmp; | |
571 | while (*p) { | |
572 | if ( *p & 0x80 ) { | |
573 | utf8_to_int( p, &bytes, &value ); | |
574 | if ( p[bytes] ) { | |
575 | xstr = g_strdup( p + bytes ); | |
576 | } | |
577 | else { | |
578 | xstr = NULL; | |
579 | } | |
580 | sprintf( p, "&#x%x;", value ); | |
581 | p = p+strlen(p); | |
582 | if ( xstr ) { | |
583 | strcpy( p, xstr ); | |
584 | g_free(xstr); | |
585 | } | |
586 | } | |
587 | else { | |
588 | p++; | |
589 | } | |
590 | } | |
591 | } | |
592 | return (tmp); | |
593 | } | |
594 | /**** end GPSBabel code ****/ | |
595 | ||
596 | /* export GPX */ | |
8904c540 | 597 | |
0b72c435 | 598 | static void gpx_write_waypoint ( const gchar *name, VikWaypoint *wp, GpxWritingContext *context ) |
561e6ad0 | 599 | { |
0b72c435 | 600 | FILE *f = context->file; |
561e6ad0 | 601 | static struct LatLon ll; |
8904c540 | 602 | gchar *s_lat,*s_lon; |
561e6ad0 EB |
603 | gchar *tmp; |
604 | vik_coord_to_latlon ( &(wp->coord), &ll ); | |
161aa492 EB |
605 | s_lat = a_coords_dtostr( ll.lat ); |
606 | s_lon = a_coords_dtostr( ll.lon ); | |
8904c540 GB |
607 | fprintf ( f, "<wpt lat=\"%s\" lon=\"%s\"%s>\n", |
608 | s_lat, s_lon, wp->visible ? "" : " hidden=\"hidden\"" ); | |
609 | g_free ( s_lat ); | |
610 | g_free ( s_lon ); | |
561e6ad0 EB |
611 | |
612 | tmp = entitize ( name ); | |
613 | fprintf ( f, " <name>%s</name>\n", tmp ); | |
614 | g_free ( tmp); | |
615 | ||
616 | if ( wp->altitude != VIK_DEFAULT_ALTITUDE ) | |
8904c540 | 617 | { |
161aa492 | 618 | tmp = a_coords_dtostr ( wp->altitude ); |
8904c540 GB |
619 | fprintf ( f, " <ele>%s</ele>\n", tmp ); |
620 | g_free ( tmp ); | |
621 | } | |
561e6ad0 EB |
622 | if ( wp->comment ) |
623 | { | |
624 | tmp = entitize(wp->comment); | |
625 | fprintf ( f, " <desc>%s</desc>\n", tmp ); | |
626 | g_free ( tmp ); | |
627 | } | |
628 | if ( wp->image ) | |
629 | { | |
630 | tmp = entitize(wp->image); | |
631 | fprintf ( f, " <link>%s</link>\n", tmp ); | |
632 | g_free ( tmp ); | |
633 | } | |
42c2ac3e AF |
634 | if ( wp->symbol ) |
635 | { | |
636 | tmp = entitize(wp->symbol); | |
637 | fprintf ( f, " <sym>%s</sym>\n", tmp); | |
638 | g_free ( tmp ); | |
639 | } | |
640 | ||
561e6ad0 EB |
641 | fprintf ( f, "</wpt>\n" ); |
642 | } | |
643 | ||
0b72c435 | 644 | static void gpx_write_trackpoint ( VikTrackpoint *tp, GpxWritingContext *context ) |
561e6ad0 | 645 | { |
0b72c435 | 646 | FILE *f = context->file; |
561e6ad0 | 647 | static struct LatLon ll; |
8904c540 | 648 | gchar *s_lat,*s_lon, *s_alt; |
dd81e762 | 649 | gchar *time_iso8601; |
561e6ad0 EB |
650 | vik_coord_to_latlon ( &(tp->coord), &ll ); |
651 | ||
652 | if ( tp->newsegment ) | |
653 | fprintf ( f, " </trkseg>\n <trkseg>\n" ); | |
654 | ||
161aa492 EB |
655 | s_lat = a_coords_dtostr( ll.lat ); |
656 | s_lon = a_coords_dtostr( ll.lon ); | |
8904c540 | 657 | fprintf ( f, " <trkpt lat=\"%s\" lon=\"%s\">\n", s_lat, s_lon ); |
0b72c435 OK |
658 | g_free ( s_lat ); s_lat = NULL; |
659 | g_free ( s_lon ); s_lon = NULL; | |
561e6ad0 | 660 | |
0b72c435 | 661 | s_alt = NULL; |
561e6ad0 | 662 | if ( tp->altitude != VIK_DEFAULT_ALTITUDE ) |
8904c540 | 663 | { |
161aa492 | 664 | s_alt = a_coords_dtostr ( tp->altitude ); |
8904c540 | 665 | } |
0b72c435 | 666 | else if ( context->options != NULL && context->options->force_ele ) |
36179a2e OK |
667 | { |
668 | s_alt = a_coords_dtostr ( 0 ); | |
669 | } | |
0b72c435 OK |
670 | if (s_alt != NULL) |
671 | fprintf ( f, " <ele>%s</ele>\n", s_alt ); | |
672 | g_free ( s_alt ); s_alt = NULL; | |
36179a2e | 673 | |
dd81e762 | 674 | time_iso8601 = NULL; |
561e6ad0 | 675 | if ( tp->has_timestamp ) { |
dd81e762 GB |
676 | GTimeVal timestamp; |
677 | timestamp.tv_sec = tp->timestamp; | |
61f37ac9 | 678 | timestamp.tv_usec = 0; |
dd81e762 GB |
679 | |
680 | time_iso8601 = g_time_val_to_iso8601 ( ×tamp ); | |
561e6ad0 | 681 | } |
0b72c435 | 682 | else if ( context->options != NULL && context->options->force_time ) |
36179a2e | 683 | { |
dd81e762 GB |
684 | GTimeVal current; |
685 | g_get_current_time ( ¤t ); | |
36179a2e | 686 | |
dd81e762 | 687 | time_iso8601 = g_time_val_to_iso8601 ( ¤t ); |
36179a2e | 688 | } |
dd81e762 GB |
689 | if ( time_iso8601 != NULL ) |
690 | fprintf ( f, " <time>%s</time>\n", time_iso8601 ); | |
691 | g_free(time_iso8601); | |
692 | time_iso8601 = NULL; | |
36179a2e | 693 | |
a2817d3c QT |
694 | if (tp->extended && (tp->fix_mode >= VIK_GPS_MODE_2D)) { |
695 | if (!isnan(tp->course)) { | |
696 | gchar *s_course = a_coords_dtostr(tp->course); | |
697 | fprintf ( f, " <course>%s</course>\n", s_course ); | |
698 | g_free(s_course); | |
699 | } | |
700 | if (!isnan(tp->speed)) { | |
701 | gchar *s_speed = a_coords_dtostr(tp->speed); | |
702 | fprintf ( f, " <speed>%s</speed>\n", s_speed ); | |
703 | g_free(s_speed); | |
704 | } | |
705 | if (tp->fix_mode == VIK_GPS_MODE_2D) | |
706 | fprintf ( f, " <fix>2d</fix>\n"); | |
707 | if (tp->fix_mode == VIK_GPS_MODE_3D) | |
708 | fprintf ( f, " <fix>3d</fix>\n"); | |
709 | if (tp->nsats > 0) | |
710 | fprintf ( f, " <sat>%d</sat>\n", tp->nsats ); | |
711 | } | |
712 | ||
561e6ad0 EB |
713 | fprintf ( f, " </trkpt>\n" ); |
714 | } | |
715 | ||
716 | ||
0b72c435 | 717 | static void gpx_write_track ( const gchar *name, VikTrack *t, GpxWritingContext *context ) |
561e6ad0 | 718 | { |
0b72c435 | 719 | FILE *f = context->file; |
561e6ad0 | 720 | gchar *tmp; |
494eb388 | 721 | gboolean first_tp_is_newsegment = FALSE; /* must temporarily make it not so, but we want to restore state. not that it matters. */ |
561e6ad0 EB |
722 | |
723 | tmp = entitize ( name ); | |
724 | fprintf ( f, "<trk%s>\n <name>%s</name>\n", t->visible ? "" : " hidden=\"hidden\"", tmp ); | |
725 | g_free ( tmp ); | |
726 | ||
727 | if ( t->comment ) | |
728 | { | |
729 | tmp = entitize ( t->comment ); | |
730 | fprintf ( f, " <desc>%s</desc>\n", tmp ); | |
731 | g_free ( tmp ); | |
732 | } | |
733 | ||
734 | fprintf ( f, " <trkseg>\n" ); | |
735 | ||
736 | if ( t->trackpoints && t->trackpoints->data ) { | |
737 | first_tp_is_newsegment = VIK_TRACKPOINT(t->trackpoints->data)->newsegment; | |
738 | VIK_TRACKPOINT(t->trackpoints->data)->newsegment = FALSE; /* so we won't write </trkseg><trkseg> already */ | |
0b72c435 | 739 | g_list_foreach ( t->trackpoints, (GFunc) gpx_write_trackpoint, context ); |
561e6ad0 | 740 | VIK_TRACKPOINT(t->trackpoints->data)->newsegment = first_tp_is_newsegment; /* restore state */ |
494eb388 | 741 | } |
561e6ad0 EB |
742 | |
743 | fprintf ( f, "</trkseg>\n</trk>\n" ); | |
744 | } | |
745 | ||
5092de80 | 746 | static void gpx_write_header( FILE *f ) |
561e6ad0 EB |
747 | { |
748 | fprintf(f, "<?xml version=\"1.0\"?>\n" | |
749 | "<gpx version=\"1.0\" creator=\"Viking -- http://viking.sf.net/\"\n" | |
750 | "xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n" | |
751 | "xmlns=\"http://www.topografix.com/GPX/1/0\"\n" | |
752 | "xsi:schemaLocation=\"http://www.topografix.com/GPX/1/0 http://www.topografix.com/GPX/1/0/gpx.xsd\">\n"); | |
5092de80 GB |
753 | } |
754 | ||
755 | static void gpx_write_footer( FILE *f ) | |
756 | { | |
561e6ad0 | 757 | fprintf(f, "</gpx>\n"); |
5092de80 | 758 | } |
561e6ad0 | 759 | |
eab858a1 EB |
760 | |
761 | ||
762 | typedef struct { | |
763 | VikWaypoint *wp; | |
764 | const gchar *name; | |
765 | } gpx_waypoint_and_name; | |
766 | ||
767 | typedef struct { | |
768 | gpx_waypoint_and_name *wps; | |
769 | guint i; | |
770 | guint n_wps; | |
771 | } gpx_gather_waypoints_passalong_t; | |
772 | ||
e3449376 HR |
773 | /* Type to hold name of track and timestamp of first trackpoint */ |
774 | typedef struct { | |
775 | time_t first_timestamp; | |
776 | const gchar *name; | |
777 | } gpx_track_and_timestamp; | |
778 | ||
779 | typedef struct { | |
780 | gpx_track_and_timestamp *trks; | |
781 | guint i; | |
782 | guint n_trks; | |
783 | } gpx_gather_tracks_passalong_t; | |
784 | ||
eab858a1 EB |
785 | static void gpx_collect_waypoint ( const gchar *name, VikWaypoint *wp, gpx_gather_waypoints_passalong_t *passalong ) |
786 | { | |
787 | if ( passalong->i < passalong->n_wps ) { | |
788 | passalong->wps[passalong->i].name = name; | |
789 | passalong->wps[passalong->i].wp = wp; | |
790 | passalong->i++; | |
791 | } | |
792 | } | |
793 | ||
e3449376 HR |
794 | /* Function to collect a track and the first timestamp in the list */ |
795 | static void gpx_collect_track (const gchar *name, VikTrack *track, gpx_gather_tracks_passalong_t *passalong) | |
796 | { | |
797 | if (passalong->i < passalong->n_trks) | |
798 | { | |
799 | VikTrackpoint *first_point = (VikTrackpoint *)track->trackpoints->data; | |
800 | passalong->trks[passalong->i].name = name; | |
801 | passalong->trks[passalong->i].first_timestamp = first_point->timestamp; | |
802 | passalong->i++; | |
803 | } | |
804 | } | |
805 | ||
eab858a1 EB |
806 | static int gpx_waypoint_and_name_compar(const void *x, const void *y) |
807 | { | |
808 | gpx_waypoint_and_name *a = (gpx_waypoint_and_name *)x; | |
809 | gpx_waypoint_and_name *b = (gpx_waypoint_and_name *)y; | |
810 | return strcmp(a->name,b->name); | |
811 | } | |
812 | ||
e3449376 HR |
813 | /* Function to compare two tracks by their first timestamp */ |
814 | static int gpx_track_and_timestamp_compar(const void *x, const void *y) | |
815 | { | |
816 | gpx_track_and_timestamp *a = (gpx_track_and_timestamp *)x; | |
817 | gpx_track_and_timestamp *b = (gpx_track_and_timestamp *)y; | |
818 | if (a->first_timestamp < b->first_timestamp) | |
819 | { | |
820 | return -1; | |
821 | } | |
822 | if (a->first_timestamp > b->first_timestamp) | |
823 | { | |
824 | return 1; | |
825 | } | |
826 | return 0; | |
827 | } | |
828 | ||
5092de80 GB |
829 | void a_gpx_write_file( VikTrwLayer *vtl, FILE *f ) |
830 | { | |
0b72c435 OK |
831 | a_gpx_write_file_options(NULL, vtl, f); |
832 | } | |
833 | ||
834 | void a_gpx_write_file_options ( GpxWritingOptions *options, VikTrwLayer *vtl, FILE *f ) | |
835 | { | |
836 | GpxWritingContext context = { options, f }; | |
eab858a1 EB |
837 | int i; |
838 | ||
5092de80 | 839 | gpx_write_header ( f ); |
eab858a1 | 840 | |
0b72c435 | 841 | |
eab858a1 EB |
842 | gpx_gather_waypoints_passalong_t passalong; |
843 | passalong.n_wps = g_hash_table_size ( vik_trw_layer_get_waypoints ( vtl ) ); | |
844 | passalong.i = 0; | |
845 | passalong.wps = g_new(gpx_waypoint_and_name,passalong.n_wps); | |
846 | g_hash_table_foreach ( vik_trw_layer_get_waypoints ( vtl ), (GHFunc) gpx_collect_waypoint, &passalong ); | |
847 | /* gather waypoints in a list, then sort */ | |
848 | qsort(passalong.wps, passalong.n_wps, sizeof(gpx_waypoint_and_name), gpx_waypoint_and_name_compar); | |
849 | for ( i = 0; i < passalong.n_wps; i++ ) | |
0b72c435 | 850 | gpx_write_waypoint ( passalong.wps[i].name, passalong.wps[i].wp, &context); |
eab858a1 EB |
851 | g_free ( passalong.wps ); |
852 | ||
e3449376 HR |
853 | gpx_gather_tracks_passalong_t passalong_tracks; |
854 | passalong_tracks.n_trks = g_hash_table_size ( vik_trw_layer_get_tracks (vtl) ); | |
855 | passalong_tracks.i = 0; | |
856 | passalong_tracks.trks = g_new(gpx_track_and_timestamp,passalong_tracks.n_trks); | |
857 | g_hash_table_foreach (vik_trw_layer_get_tracks(vtl), (GHFunc) gpx_collect_track, &passalong_tracks); | |
858 | /* Sort by timestamp */ | |
859 | qsort(passalong_tracks.trks, passalong_tracks.n_trks, sizeof(gpx_track_and_timestamp), gpx_track_and_timestamp_compar); | |
860 | for (i=0;i<passalong_tracks.n_trks; i++) | |
861 | { | |
862 | 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); | |
863 | } | |
864 | g_free ( passalong_tracks.trks ); | |
5092de80 GB |
865 | gpx_write_footer ( f ); |
866 | } | |
561e6ad0 | 867 | |
5092de80 GB |
868 | void a_gpx_write_track_file ( const gchar *name, VikTrack *t, FILE *f ) |
869 | { | |
0b72c435 OK |
870 | a_gpx_write_track_file_options ( NULL, name, t, f ); |
871 | } | |
872 | ||
873 | void a_gpx_write_track_file_options ( GpxWritingOptions *options, const gchar *name, VikTrack *t, FILE *f ) | |
874 | { | |
875 | GpxWritingContext context = {options, f}; | |
5092de80 | 876 | gpx_write_header ( f ); |
0b72c435 | 877 | gpx_write_track ( name, t, &context ); |
5092de80 | 878 | gpx_write_footer ( f ); |
561e6ad0 | 879 | } |