2 * This file is part of mapper
4 * Copyright (C) 2006-2007 John Costigan.
6 * POI and GPS-Info code originally written by Cezary Jackiewicz.
8 * Default map data provided by http://www.openstreetmap.org/
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.
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.
20 * You should have received a copy of the GNU General Public License along
21 * with this program; if not, write to the Free Software Foundation, Inc.,
22 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
35 #include <glib/gstdio.h>
36 #include <glib/gi18n.h>
39 #include <libgnomevfs/gnome-vfs.h>
40 #include <curl/multi.h>
41 #include <gconf/gconf-client.h>
42 #include <libxml/parser.h>
49 #include "ui-common.h"
53 #include "mapper-types.h"
59 #define XML_DATE_FORMAT "%FT%T"
61 #define WRITE_STRING(string) { \
62 GnomeVFSResult vfs_result; \
63 GnomeVFSFileSize size; \
64 if(GNOME_VFS_OK != (vfs_result = gnome_vfs_write(handle, (string), strlen((string)), &size))) \
66 gchar buffer[BUFFER_SIZE]; \
67 g_snprintf(buffer, sizeof(buffer), \
68 "%s:\n%s\n%s", _("Error while writing to file"), _("File is incomplete."), \
69 gnome_vfs_result_to_string(vfs_result)); \
70 popup_error(_window, buffer); \
75 /** This enum defines the states of the SAX parsing state machine. */
82 INSIDE_PATH_POINT_ELE,
83 INSIDE_PATH_POINT_TIME,
84 INSIDE_PATH_POINT_DESC,
90 /** Data used during the SAX parsing operation. */
91 typedef struct _SaxData SaxData;
97 gboolean at_least_one_trkpt;
109 localtime_r(&time1, &time2);
110 g_snprintf(XML_TZONE, sizeof(XML_TZONE), "%+03ld:%02ld",
111 (time2.tm_gmtoff / 60 / 60), (time2.tm_gmtoff / 60) % 60);
115 write_gpx(Path * path, GnomeVFSHandle * handle)
118 WayPoint *wcurr = NULL;
119 gboolean trkseg_break = FALSE;
121 /* Find first non-zero point. */
122 for (curr = path->head - 1, wcurr = path->whead; curr++ != path->tail;) {
125 else if (wcurr && curr == wcurr->point)
129 /* Write the header. */
130 WRITE_STRING("<?xml version=\"1.0\"?>\n"
131 "<gpx version=\"1.0\" creator=\"mapper\" "
132 "xmlns=\"http://www.topografix.com/GPX/1/0\">\n"
133 " <trk>\n" " <trkseg>\n");
135 /* Curr points to first non-zero point. */
136 for (curr--; curr++ != path->tail;) {
140 gboolean first_sub = TRUE;
142 /* First trkpt of the segment - write trkseg header. */
143 WRITE_STRING(" </trkseg>\n"
145 trkseg_break = FALSE;
147 unit2latlon(curr->unitx, curr->unity, lat, lon);
148 WRITE_STRING(" <trkpt lat=\"");
149 g_ascii_formatd(buffer, sizeof(buffer), "%.06f", lat);
150 WRITE_STRING(buffer);
151 WRITE_STRING("\" lon=\"");
152 g_ascii_formatd(buffer, sizeof(buffer), "%.06f", lon);
153 WRITE_STRING(buffer);
156 /* write the elevation */
157 if (!isnan(curr->altitude)) {
162 WRITE_STRING(" <ele>");
164 g_ascii_formatd(buffer, 80, "%.2f",
166 WRITE_STRING(buffer);
168 WRITE_STRING("</ele>\n");
177 WRITE_STRING(" <time>");
178 strftime(buffer, 80, XML_DATE_FORMAT,
179 localtime(&curr->time));
180 WRITE_STRING(buffer);
181 WRITE_STRING(XML_TZONE);
182 WRITE_STRING("</time>\n");
185 if (wcurr && curr == wcurr->point) {
190 WRITE_STRING(" <desc>");
191 WRITE_STRING(wcurr->desc);
192 WRITE_STRING("</desc>\n");
196 WRITE_STRING("/>\n");
198 WRITE_STRING(" </trkpt>\n");
204 /* Write the footer. */
205 WRITE_STRING(" </trkseg>\n" " </trk>\n" "</gpx>\n");
211 * Handle a start tag in the parsing of a GPX file.
213 #define MACRO_SET_UNKNOWN() { \
214 data->prev_state = data->state; \
215 data->state = UNKNOWN; \
216 data->unknown_depth = 1; \
220 gpx_start_element(SaxData * data, const xmlChar * name, const xmlChar ** attrs)
223 switch (data->state) {
227 if (!strcmp((gchar *) name, "gpx"))
228 data->state = INSIDE_GPX;
233 if (!strcmp((gchar *) name, "trk"))
234 data->state = INSIDE_PATH;
239 if (!strcmp((gchar *) name, "trkseg")) {
240 data->state = INSIDE_PATH_SEGMENT;
241 data->at_least_one_trkpt = FALSE;
245 case INSIDE_PATH_SEGMENT:
246 if (!strcmp((gchar *) name, "trkpt")) {
247 const xmlChar **curr_attr;
249 gdouble lat = 0.f, lon = 0.f;
250 gboolean has_lat, has_lon;
253 for (curr_attr = attrs; *curr_attr != NULL;) {
254 const gchar *attr_name = *curr_attr++;
255 const gchar *attr_val = *curr_attr++;
256 if (!strcmp(attr_name, "lat")) {
257 lat = g_ascii_strtod(attr_val, &error_check);
258 if (error_check != attr_val)
260 } else if (!strcmp(attr_name, "lon")) {
261 lon = g_ascii_strtod(attr_val, &error_check);
262 if (error_check != attr_val)
266 if (has_lat && has_lon) {
267 MACRO_PATH_INCREMENT_TAIL(data->path);
268 latlon2unit(lat, lon, data->path.tail->unitx, data->path.tail->unity);
269 data->path.tail->time = 0;
270 data->path.tail->altitude = NAN;
271 data->state = INSIDE_PATH_POINT;
277 case INSIDE_PATH_POINT:
278 if (!strcmp((gchar *) name, "time"))
279 data->state = INSIDE_PATH_POINT_TIME;
280 else if (!strcmp((gchar *) name, "ele"))
281 data->state = INSIDE_PATH_POINT_ELE;
282 else if (!strcmp((gchar *) name, "desc"))
283 data->state = INSIDE_PATH_POINT_DESC;
289 data->unknown_depth++;
298 * Handle an end tag in the parsing of a GPX file.
301 gpx_end_element(SaxData * data, const xmlChar * name)
304 switch (data->state) {
311 if (!strcmp((gchar *) name, "gpx"))
312 data->state = FINISH;
317 if (!strcmp((gchar *) name, "trk"))
318 data->state = INSIDE_GPX;
322 case INSIDE_PATH_SEGMENT:
323 if (!strcmp((gchar *) name, "trkseg")) {
324 if (data->at_least_one_trkpt) {
325 MACRO_PATH_INCREMENT_TAIL(data->path);
326 *data->path.tail = _point_null;
328 data->state = INSIDE_PATH;
332 case INSIDE_PATH_POINT:
333 if (!strcmp((gchar *) name, "trkpt")) {
334 data->state = INSIDE_PATH_SEGMENT;
335 data->at_least_one_trkpt = TRUE;
339 case INSIDE_PATH_POINT_ELE:
340 if (!strcmp((gchar *) name, "ele")) {
342 data->path.tail->altitude = g_ascii_strtod(data->chars->str, &error_check);
343 if (error_check == data->chars->str)
344 data->path.tail->altitude = NAN;
345 data->state = INSIDE_PATH_POINT;
346 g_string_free(data->chars, TRUE);
347 data->chars = g_string_new("");
351 case INSIDE_PATH_POINT_TIME:
352 if (!strcmp((gchar *) name, "time")) {
356 if (NULL == (ptr = strptime(data->chars->str,
357 XML_DATE_FORMAT, &time)))
358 /* Failed to parse dateTime format. */
361 /* Parse was successful. Now we have to parse timezone.
362 * From here on, if there is an error, I just assume local
363 * timezone. Yes, this is not proper XML, but I don't
367 /* First, set time in "local" time zone. */
368 data->path.tail->time = (mktime(&time));
370 /* Now, skip inconsequential characters */
371 while (*ptr && *ptr != 'Z' && *ptr != '-'
375 /* Check if we ran to the end of the string. */
377 /* Next character is either 'Z', '-', or '+' */
379 /* Zulu (UTC) time. Undo the local time zone's
381 data->path.tail->time += time.tm_gmtoff;
383 /* Not Zulu (UTC). Must parse hours and minutes. */
385 strtol(ptr, &error_check,
387 if (error_check != ptr
389 error_check) == ':') {
390 /* Parse of hours worked. Check minutes. */
397 /* Parse of minutes worked. Calculate. */
398 data->path.tail->time +=
400 (offhours * 60 * 60 + offmins * 60));
405 /* Successfully parsed dateTime. */
406 data->state = INSIDE_PATH_POINT;
409 g_string_free(data->chars, TRUE);
410 data->chars = g_string_new("");
414 case INSIDE_PATH_POINT_DESC:
415 /* only parse description for routes */
416 if (!strcmp((gchar *) name, "desc")) {
417 MACRO_PATH_INCREMENT_WTAIL(data->path);
418 data->path.wtail->point = data->path.tail;
419 data->path.wtail->desc
420 = g_string_free(data->chars, FALSE);
421 data->chars = g_string_new("");
422 data->state = INSIDE_PATH_POINT;
427 if (!--data->unknown_depth)
428 data->state = data->prev_state;
439 * Handle char data in the parsing of a GPX file.
442 gpx_chars(SaxData * data, const xmlChar * ch, int len)
446 switch (data->state) {
450 case INSIDE_PATH_POINT_ELE:
451 case INSIDE_PATH_POINT_TIME:
452 case INSIDE_PATH_POINT_DESC:
453 for (i = 0; i < len; i++)
454 data->chars = g_string_append_c(data->chars, ch[i]);
455 vprintf("%s\n", data->chars->str);
464 * Handle an entity in the parsing of a GPX file. We don't do anything
468 gpx_get_entity(SaxData * data, const xmlChar * name)
470 return xmlGetPredefinedEntity(name);
474 * Handle an error in the parsing of a GPX file.
477 gpx_error(SaxData * data, const gchar * msg, ...)
483 parse_gpx(Path * to_replace, gchar * buffer, gint size, gint policy_old)
486 xmlSAXHandler sax_handler;
488 MACRO_PATH_INIT(data.path);
490 data.chars = g_string_new("");
492 memset(&sax_handler, 0, sizeof(sax_handler));
493 sax_handler.characters = (charactersSAXFunc) gpx_chars;
494 sax_handler.startElement = (startElementSAXFunc) gpx_start_element;
495 sax_handler.endElement = (endElementSAXFunc) gpx_end_element;
496 sax_handler.entityDecl = (entityDeclSAXFunc) gpx_get_entity;
497 sax_handler.warning = (warningSAXFunc) gpx_error;
498 sax_handler.error = (errorSAXFunc) gpx_error;
499 sax_handler.fatalError = (fatalErrorSAXFunc) gpx_error;
501 xmlSAXUserParseMemory(&sax_handler, &data, buffer, size);
502 g_string_free(data.chars, TRUE);
504 if (data.state != FINISH) {
508 if (policy_old && to_replace->head != to_replace->tail) {
512 if (policy_old > 0) {
513 /* Append to current path. Make sure last path point is zero. */
514 if (to_replace->tail->unity != 0) {
515 MACRO_PATH_INCREMENT_TAIL((*to_replace));
516 *to_replace->tail = _point_null;
521 /* Prepend to current route. */
526 /* Find src_first non-zero point. */
527 for (src_first = src->head - 1; src_first++ != src->tail;)
528 if (src_first->unity)
531 /* Append route points from src to dest. */
532 if (src->tail >= src_first) {
534 guint num_dest_points = dest->tail - dest->head + 1;
535 guint num_src_points = src->tail - src_first + 1;
537 /* Adjust dest->tail to be able to fit src route data
538 * plus room for more route data. */
539 path_resize(dest, num_dest_points + num_src_points);
541 memcpy(dest->tail + 1, src_first,
542 num_src_points * sizeof(Point));
544 dest->tail += num_src_points;
546 /* Append waypoints from src to dest->. */
547 path_wresize(dest, (dest->wtail - dest->whead)
548 + (src->wtail - src->whead) + 2);
549 for (curr = src->whead - 1; curr++ != src->wtail;) {
550 (++(dest->wtail))->point =
551 dest->head + num_dest_points +
552 (curr->point - src_first);
553 dest->wtail->desc = curr->desc;
558 /* Kill old route - don't use MACRO_PATH_FREE(), because that
559 * would free the string desc's that we just moved to data.route. */
563 (*to_replace) = *dest;
565 MACRO_PATH_FREE((*to_replace));
566 /* Overwrite with data.route. */
567 (*to_replace) = data.path;
568 path_resize(to_replace,
569 to_replace->tail - to_replace->head + 1);
570 path_wresize(to_replace,
571 to_replace->wtail - to_replace->whead + 1);