1 |
/**
|
2 |
* Navit, a modular navigation system.
|
3 |
* Copyright (C) 2005-2008 Navit Team
|
4 |
*
|
5 |
* This program is free software; you can redistribute it and/or
|
6 |
* modify it under the terms of the GNU General Public License
|
7 |
* version 2 as published by the Free Software Foundation.
|
8 |
*
|
9 |
* This program is distributed in the hope that it will be useful,
|
10 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
11 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
12 |
* GNU General Public License for more details.
|
13 |
*
|
14 |
* You should have received a copy of the GNU General Public License
|
15 |
* along with this program; if not, write to the
|
16 |
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
17 |
* Boston, MA 02110-1301, USA.
|
18 |
*/
|
19 |
|
20 |
/** @file
|
21 |
*
|
22 |
* @brief Contains code used for loading more than one map
|
23 |
*
|
24 |
* The code in this file introduces "mapsets", which are collections of several maps.
|
25 |
* This enables navit to operate on more than one map at once. See map.c / map.h to learn
|
26 |
* how maps are handled.
|
27 |
*/
|
28 |
|
29 |
#include <string.h>
|
30 |
#include <glib.h>
|
31 |
#include <glib/gprintf.h>
|
32 |
#include "debug.h"
|
33 |
#include "item.h"
|
34 |
#include "mapset.h"
|
35 |
#include "projection.h"
|
36 |
#include "map.h"
|
37 |
|
38 |
/**
|
39 |
* @brief A mapset
|
40 |
*
|
41 |
* This structure holds a complete mapset
|
42 |
*/
|
43 |
struct mapset {
|
44 |
GList *maps; /**< Linked list of all the maps in the mapset */
|
45 |
};
|
46 |
|
47 |
struct attr_iter {
|
48 |
GList *last;
|
49 |
};
|
50 |
|
51 |
/**
|
52 |
* @brief Creates a new, empty mapset
|
53 |
*
|
54 |
* @return The new mapset
|
55 |
*/
|
56 |
struct mapset *mapset_new(struct attr *parent, struct attr **attrs)
|
57 |
{
|
58 |
struct mapset *ms;
|
59 |
|
60 |
ms=g_new0(struct mapset, 1);
|
61 |
|
62 |
return ms;
|
63 |
}
|
64 |
|
65 |
|
66 |
struct attr_iter *
|
67 |
mapset_attr_iter_new(void)
|
68 |
{
|
69 |
return g_new0(struct attr_iter, 1);
|
70 |
}
|
71 |
|
72 |
void
|
73 |
mapset_attr_iter_destroy(struct attr_iter *iter)
|
74 |
{
|
75 |
g_free(iter);
|
76 |
}
|
77 |
|
78 |
/**
|
79 |
* @brief Adds a map to a mapset
|
80 |
*
|
81 |
* @param ms The mapset to add the map to
|
82 |
* @param m The map to be added
|
83 |
*/
|
84 |
int
|
85 |
mapset_add_attr(struct mapset *ms, struct attr *attr)
|
86 |
{
|
87 |
switch (attr->type) {
|
88 |
case attr_map:
|
89 |
ms->maps=g_list_append(ms->maps, attr->u.map);
|
90 |
map_ref(attr->u.map);
|
91 |
return 1;
|
92 |
default:
|
93 |
return 0;
|
94 |
}
|
95 |
}
|
96 |
|
97 |
// copied from map.c !!!!!!!!!
|
98 |
// copied from map.c !!!!!!!!!
|
99 |
struct map {
|
100 |
struct map_methods meth; /**< Structure with pointers to the map plugin's functions */
|
101 |
struct map_priv *priv; /**< Private data of the map, only known to the map plugin */
|
102 |
struct attr **attrs; /**< Attributes of this map */
|
103 |
struct callback_list *attr_cbl; /**< List of callbacks that are called when attributes change */
|
104 |
int refcount;
|
105 |
};
|
106 |
// copied from map.c !!!!!!!!!
|
107 |
// copied from map.c !!!!!!!!!
|
108 |
|
109 |
int
|
110 |
mapset_add_attr_name(struct mapset *ms, struct attr *attr)
|
111 |
{
|
112 |
struct attr map_name;
|
113 |
|
114 |
dbg(0,"****** ADD MAP from sdcard ******");
|
115 |
switch (attr->type) {
|
116 |
case attr_map:
|
117 |
ms->maps=g_list_append(ms->maps, attr->u.map);
|
118 |
map_ref(attr->u.map);
|
119 |
|
120 |
struct map *m;
|
121 |
m=g_new0(struct map, 1);
|
122 |
m=attr->u.map;
|
123 |
struct attr *map_file_name=attr_search(m->attrs, NULL, attr_data);
|
124 |
map_name.type=attr_name;
|
125 |
// map_name.u.str="_ms_sdcard_map";
|
126 |
map_name.u.str=g_strconcat("_ms_sdcard_map:",map_file_name->u.str,NULL);
|
127 |
// map_name.u.str=g_strdup(map_file_name->u.str);
|
128 |
|
129 |
dbg(0,"====== map name=%s",map_name.u.str);
|
130 |
map_set_attr(attr->u.map, &map_name);
|
131 |
|
132 |
return 1;
|
133 |
default:
|
134 |
return 0;
|
135 |
}
|
136 |
}
|
137 |
|
138 |
|
139 |
int
|
140 |
mapset_remove_attr(struct mapset *ms, struct attr *attr)
|
141 |
{
|
142 |
switch (attr->type) {
|
143 |
case attr_map:
|
144 |
ms->maps=g_list_remove(ms->maps, attr->u.map);
|
145 |
return 1;
|
146 |
default:
|
147 |
return 0;
|
148 |
}
|
149 |
}
|
150 |
|
151 |
int
|
152 |
mapset_get_attr(struct mapset *ms, enum attr_type type, struct attr *attr, struct attr_iter *iter)
|
153 |
{
|
154 |
GList *map;
|
155 |
map=ms->maps;
|
156 |
attr->type=type;
|
157 |
switch (type) {
|
158 |
case attr_map:
|
159 |
while (map) {
|
160 |
if (!iter || iter->last == g_list_previous(map)) {
|
161 |
attr->u.map=map->data;
|
162 |
if (iter)
|
163 |
iter->last=map;
|
164 |
return 1;
|
165 |
}
|
166 |
map=g_list_next(map);
|
167 |
}
|
168 |
break;
|
169 |
default:
|
170 |
break;
|
171 |
}
|
172 |
return 0;
|
173 |
}
|
174 |
|
175 |
|
176 |
#if 0
|
177 |
static void mapset_maps_free(struct mapset *ms)
|
178 |
{
|
179 |
/* todo */
|
180 |
}
|
181 |
#endif
|
182 |
|
183 |
/**
|
184 |
* @brief Destroys a mapset.
|
185 |
*
|
186 |
* This destroys a mapset. Please note that it does not touch the contained maps
|
187 |
* in any way.
|
188 |
*
|
189 |
* @param ms The mapset to be destroyed
|
190 |
*/
|
191 |
void mapset_destroy(struct mapset *ms)
|
192 |
{
|
193 |
GList *map;
|
194 |
map=ms->maps;
|
195 |
while (map) {
|
196 |
map_destroy(map->data);
|
197 |
map=g_list_next(map);
|
198 |
}
|
199 |
g_free(ms);
|
200 |
}
|
201 |
|
202 |
/**
|
203 |
* @brief Handle for a mapset in use
|
204 |
*
|
205 |
* This struct is used for a mapset that is in use. With this it is possible to iterate
|
206 |
* all maps in a mapset.
|
207 |
*/
|
208 |
struct mapset_handle {
|
209 |
GList *l; /**< Pointer to the current (next) map */
|
210 |
};
|
211 |
|
212 |
/**
|
213 |
* @brief Returns a new handle for a mapset
|
214 |
*
|
215 |
* This returns a new handle for an existing mapset. The new handle points to the first
|
216 |
* map in the set.
|
217 |
*
|
218 |
* @param ms The mapset to get a handle of
|
219 |
* @return The new mapset handle
|
220 |
*/
|
221 |
struct mapset_handle *
|
222 |
mapset_open(struct mapset *ms)
|
223 |
{
|
224 |
struct mapset_handle *ret=NULL;
|
225 |
if(ms)
|
226 |
{
|
227 |
ret=g_new(struct mapset_handle, 1);
|
228 |
ret->l=ms->maps;
|
229 |
}
|
230 |
|
231 |
return ret;
|
232 |
}
|
233 |
|
234 |
/**
|
235 |
* @brief Gets the next map from a mapset handle
|
236 |
*
|
237 |
* If you set active to true, this function will not return any maps that
|
238 |
* have the attr_active attribute associated with them and set to false.
|
239 |
*
|
240 |
* @param msh The mapset handle to get the next map of
|
241 |
* @param active Set to true to only get active maps (See description)
|
242 |
* @return The next map
|
243 |
*/
|
244 |
struct map * mapset_next(struct mapset_handle *msh, int active)
|
245 |
{
|
246 |
struct map *ret;
|
247 |
struct attr active_attr;
|
248 |
|
249 |
for (;;) {
|
250 |
if (!msh || !msh->l)
|
251 |
return NULL;
|
252 |
ret=msh->l->data;
|
253 |
msh->l=g_list_next(msh->l);
|
254 |
if (!active)
|
255 |
return ret;
|
256 |
if (active == 2 && map_get_attr(ret, attr_route_active, &active_attr, NULL)) {
|
257 |
if (active_attr.u.num)
|
258 |
return ret;
|
259 |
else
|
260 |
continue;
|
261 |
}
|
262 |
if (active == 3 && map_get_attr(ret, attr_search_active, &active_attr, NULL)) {
|
263 |
if (active_attr.u.num)
|
264 |
return ret;
|
265 |
else
|
266 |
continue;
|
267 |
}
|
268 |
if (!map_get_attr(ret, attr_active, &active_attr, NULL))
|
269 |
return ret;
|
270 |
if (active_attr.u.num)
|
271 |
return ret;
|
272 |
}
|
273 |
}
|
274 |
|
275 |
/**
|
276 |
* @brief Gets a map from the mapset by name
|
277 |
*
|
278 |
* @param ms The map
|
279 |
* @param map_name the map name used by the search
|
280 |
* @return The next map
|
281 |
*/
|
282 |
struct map *
|
283 |
mapset_get_map_by_name(struct mapset *ms, char*map_name)
|
284 |
{
|
285 |
struct mapset_handle*msh;
|
286 |
struct map*curr_map;
|
287 |
struct attr map_attr;
|
288 |
if( !ms || !map_name ) {
|
289 |
return NULL;
|
290 |
}
|
291 |
msh=mapset_open(ms);
|
292 |
while ((curr_map=mapset_next(msh, 1))) {
|
293 |
//get map name
|
294 |
if(map_get_attr(curr_map,attr_name, &map_attr,NULL)) {
|
295 |
if( ! strcmp(map_attr.u.str, map_name)) {
|
296 |
break;
|
297 |
}
|
298 |
}
|
299 |
}
|
300 |
return curr_map;
|
301 |
}
|
302 |
|
303 |
/**
|
304 |
* @brief Closes a mapset handle after it is no longer used
|
305 |
*
|
306 |
* @param msh Mapset handle to be closed
|
307 |
*/
|
308 |
void
|
309 |
mapset_close(struct mapset_handle *msh)
|
310 |
{
|
311 |
g_free(msh);
|
312 |
}
|
313 |
|
314 |
/**
|
315 |
* @brief Holds information about a search in a mapset
|
316 |
*
|
317 |
* This struct holds information about a search (e.g. for a street) in a mapset.
|
318 |
*
|
319 |
* @sa For a more detailed description see the documentation of mapset_search_new().
|
320 |
*/
|
321 |
struct mapset_search {
|
322 |
GList *map; /**< The list of maps to be searched within */
|
323 |
struct map_search *ms; /**< A map search struct for the map currently active */
|
324 |
struct item *item; /**< "Superior" item. */
|
325 |
struct attr *search_attr; /**< Attribute to be searched for. */
|
326 |
int partial; /**< Indicates if one would like to have partial matches */
|
327 |
};
|
328 |
|
329 |
/**
|
330 |
* @brief Starts a search on a mapset
|
331 |
*
|
332 |
* This function starts a search on a mapset. What attributes one can search for depends on the
|
333 |
* map plugin. See the description of map_search_new() in map.c for details.
|
334 |
*
|
335 |
* If you enable partial matches bear in mind that the search matches only the begin of the
|
336 |
* strings - a search for a street named "street" would match to "streetfoo", but not to
|
337 |
* "somestreet". Search is case insensitive.
|
338 |
*
|
339 |
* The item passed to this function specifies a "superior item" to "search within" - e.g. a town
|
340 |
* in which we want to search for a street, or a country in which to search for a town.
|
341 |
*
|
342 |
* @param ms The mapset that should be searched
|
343 |
* @param item Specifies a superior item to "search within" (see description)
|
344 |
* @param search_attr Attribute specifying what to search for. See description.
|
345 |
* @param partial Set this to true to also have partial matches. See description.
|
346 |
* @return A new mapset search struct for this search
|
347 |
*/
|
348 |
struct mapset_search *
|
349 |
mapset_search_new(struct mapset *ms, struct item *item, struct attr *search_attr, int partial)
|
350 |
{
|
351 |
struct mapset_search *this;
|
352 |
dbg(1,"enter(%p,%p,%p,%d)\n", ms, item, search_attr, partial);
|
353 |
this=g_new0(struct mapset_search,1);
|
354 |
if(this != NULL && ms!=NULL )
|
355 |
{
|
356 |
this->map=ms->maps;
|
357 |
this->item=item;
|
358 |
this->search_attr=search_attr;
|
359 |
this->partial=partial;
|
360 |
this->ms=map_search_new(this->map->data, item, search_attr, partial);
|
361 |
return this;
|
362 |
}
|
363 |
else
|
364 |
{
|
365 |
return NULL;
|
366 |
}
|
367 |
}
|
368 |
|
369 |
/**
|
370 |
* @brief Returns the next found item from a mapset search
|
371 |
*
|
372 |
* This function returns the next item from a mapset search or NULL if there are no more items found.
|
373 |
* It automatically iterates through all the maps in the mapset. Please note that maps which have the
|
374 |
* attr_active attribute associated with them and set to false are not searched.
|
375 |
*
|
376 |
* @param this The mapset search to return an item from
|
377 |
* @return The next found item or NULL if there are no more items found
|
378 |
*/
|
379 |
struct item *
|
380 |
mapset_search_get_item(struct mapset_search *this_)
|
381 |
{
|
382 |
struct item *ret=NULL;
|
383 |
struct attr active_attr;
|
384 |
|
385 |
while ((this_) && (!this_->ms || !(ret=map_search_get_item(this_->ms)))) { /* The current map has no more items to be returned */
|
386 |
if (this_->search_attr->type >= attr_country_all && this_->search_attr->type <= attr_country_name)
|
387 |
break;
|
388 |
for (;;) {
|
389 |
this_->map=g_list_next(this_->map);
|
390 |
if (! this_->map)
|
391 |
break;
|
392 |
if (map_get_attr(this_->map->data, attr_search_active, &active_attr, NULL)) {
|
393 |
if (!active_attr.u.num)
|
394 |
continue;
|
395 |
}
|
396 |
if (!map_get_attr(this_->map->data, attr_active, &active_attr, NULL))
|
397 |
break;
|
398 |
if (active_attr.u.num)
|
399 |
break;
|
400 |
}
|
401 |
if (! this_->map)
|
402 |
break;
|
403 |
map_search_destroy(this_->ms);
|
404 |
this_->ms=map_search_new(this_->map->data, this_->item, this_->search_attr, this_->partial);
|
405 |
}
|
406 |
return ret;
|
407 |
}
|
408 |
|
409 |
/**
|
410 |
* @brief Destroys a mapset search
|
411 |
*
|
412 |
* @param this The mapset search to be destroyed
|
413 |
*/
|
414 |
void
|
415 |
mapset_search_destroy(struct mapset_search *this_)
|
416 |
{
|
417 |
if (this_) {
|
418 |
map_search_destroy(this_->ms);
|
419 |
g_free(this_);
|
420 |
}
|
421 |
}
|