src/geonamessearch.c

   1 /*
   2  * viking -- GPS Data and Topo Analyzer, Explorer, and Manager
   3  *
   4  * Copyright (C) 2003-2005, Evan Battaglia <gtoevan@gmx.net>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  * Created by Quy Tonthat <qtonthat@gmail.com>
  21  */
  22 #ifdef HAVE_CONFIG_H
  23 #include "config.h"
  24 #endif
  25 #include <stdlib.h>
  26 #include <stdio.h>
  27 #include <string.h>
  28 #include <glib.h>
  29 #include <glib/gstdio.h>
  30 #include <glib/gprintf.h>
  31 #include <glib/gi18n.h>
  32
  33 #include "viking.h"
  34 #include "util.h"
  35 #include "curl_download.h"
  36
  37 #define GEONAMES_WIKIPEDIA_URL_FMT "http://ws.geonames.org/wikipediaBoundingBoxJSON?formatted=true&north=%s&south=%s&east=%s&west=%s"
  38 #define GEONAMES_COUNTRY_PATTERN "\"countryName\": \""
  39 #define GEONAMES_LONGITUDE_PATTERN "\"lng\": "
  40 #define GEONAMES_NAME_PATTERN "\"name\": \""
  41 #define GEONAMES_LATITUDE_PATTERN "\"lat\": "
  42 #define GEONAMES_TITLE_PATTERN "\"title\": \""
  43 #define GEONAMES_WIKIPEDIAURL_PATTERN "\"wikipediaUrl\": \""
  44 #define GEONAMES_THUMBNAILIMG_PATTERN "\"thumbnailImg\": \""
  45 #define GEONAMES_SEARCH_NOT_FOUND "not understand the location"
  46
  47 /* found_geoname: Type to contain data returned from GeoNames.org */
  48
  49 typedef struct {
  50   gchar *name;
  51   gchar *country;
  52   struct LatLon ll;
  53   gchar *desc;
  54 } found_geoname;
  55
  56 found_geoname *new_found_geoname()
  57 {
  58   found_geoname *ret;
  59
  60   ret = (found_geoname *)g_malloc(sizeof(found_geoname));
  61   ret->name = NULL;
  62   ret->country = NULL;
  63   ret->desc = NULL;
  64   ret->ll.lat = 0.0;
  65   ret->ll.lon = 0.0;
  66   return(ret);
  67 }
  68
  69 found_geoname *copy_found_geoname(found_geoname *src)
  70 {
  71   found_geoname *dest = new_found_geoname();
  72   dest->name = g_strdup(src->name);
  73   dest->country = g_strdup(src->country);
  74   dest->ll.lat = src->ll.lat;
  75   dest->ll.lon = src->ll.lon;
  76   dest->desc = g_strdup(src->desc);
  77   return(dest);
  78 }
  79
  80 static void free_list_geonames(found_geoname *geoname, gpointer userdata)
  81 {
  82   g_free(geoname->name);
  83   g_free(geoname->country);
  84   g_free(geoname->desc);
  85 }
  86
  87 void free_geoname_list(GList *found_places)
  88 {
  89   g_list_foreach(found_places, (GFunc)free_list_geonames, NULL);
  90   g_list_free(found_places);
  91 }
  92
  93 static void none_found(VikWindow *vw)
  94 {
  95   GtkWidget *dialog = NULL;
  96
  97   dialog = gtk_dialog_new_with_buttons ( "", GTK_WINDOW(vw), 0, GTK_STOCK_OK, GTK_RESPONSE_ACCEPT, NULL );
  98   gtk_window_set_title(GTK_WINDOW(dialog), _("Search"));
  99
 100   GtkWidget *search_label = gtk_label_new(_("No entries found!"));
 101   gtk_box_pack_start ( GTK_BOX(GTK_DIALOG(dialog)->vbox), search_label, FALSE, FALSE, 5 );
 102   gtk_widget_show_all(dialog);
 103
 104   gtk_dialog_run ( GTK_DIALOG(dialog) );
 105   gtk_widget_destroy(dialog);
 106 }
 107
 108 void buttonToggled(GtkCellRendererToggle* renderer, gchar* pathStr, gpointer data)
 109 {
 110    GtkTreeIter iter;
 111    gboolean enabled;
 112    GtkTreePath* path = gtk_tree_path_new_from_string(pathStr);
 113    gtk_tree_model_get_iter(GTK_TREE_MODEL (data), &iter, path);
 114    gtk_tree_model_get(GTK_TREE_MODEL (data), &iter, 0, &enabled, -1);
 115    enabled = !enabled;
 116    gtk_tree_store_set(GTK_TREE_STORE (data), &iter, 0, enabled, -1);
 117 }
 118
 119 GList *a_select_geoname_from_list(GtkWindow *parent, GList *geonames, gboolean multiple_selection_allowed, const gchar *title, const gchar *msg)
 120 {
 121   GtkTreeIter iter;
 122   GtkCellRenderer *renderer;
 123   GtkCellRenderer *toggle_render;
 124   GtkWidget *view;
 125   found_geoname *geoname;
 126   gchar *latlon_string;
 127   int column_runner;
 128   gboolean checked;
 129   gboolean to_copy;
 130
 131   GtkWidget *dialog = gtk_dialog_new_with_buttons (title,
 132                                                   parent,
 133                                                   GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
 134                                                   GTK_STOCK_CANCEL,
 135                                                   GTK_RESPONSE_REJECT,
 136                                                   GTK_STOCK_OK,
 137                                                   GTK_RESPONSE_ACCEPT,
 138                                                   NULL);
 139   GtkWidget *label = gtk_label_new ( msg );
 140   GtkTreeStore *store;
 141   if (multiple_selection_allowed)
 142   {
 143     store = gtk_tree_store_new(4, G_TYPE_BOOLEAN, G_TYPE_STRING, G_TYPE_STRING, G_TYPE_STRING);
 144   }
 145   else
 146   {
 147     store = gtk_tree_store_new(3, G_TYPE_STRING, G_TYPE_STRING, G_TYPE_STRING);
 148   }
 149   GList *geoname_runner = geonames;
 150   while (geoname_runner)
 151   {
 152     geoname = (found_geoname *)geoname_runner->data;
 153     latlon_string = g_strdup_printf("(%f,%f)", geoname->ll.lat, geoname->ll.lon);
 154     gtk_tree_store_append(store, &iter, NULL);
 155     if (multiple_selection_allowed)
 156     {
 157       gtk_tree_store_set(store, &iter, 0, FALSE, 1, geoname->name, 2, geoname->country, 3, latlon_string, -1);
 158     }
 159     else
 160     {
 161       gtk_tree_store_set(store, &iter, 0, geoname->name, 1, geoname->country, 2, latlon_string, -1);
 162     }
 163     geoname_runner = g_list_next(geoname_runner);
 164     g_free(latlon_string);
 165   }
 166   view = gtk_tree_view_new();
 167   renderer = gtk_cell_renderer_text_new();
 168   column_runner = 0;
 169   if (multiple_selection_allowed)
 170   {
 171     toggle_render = gtk_cell_renderer_toggle_new();
 172     g_object_set(toggle_render, "activatable", TRUE, NULL);
 173     g_signal_connect(toggle_render, "toggled", (GCallback) buttonToggled, GTK_TREE_MODEL(store));
 174     gtk_tree_view_insert_column_with_attributes( GTK_TREE_VIEW(view), -1, "Select", toggle_render, "active", column_runner, NULL);
 175     column_runner++;
 176   }
 177   gtk_tree_view_insert_column_with_attributes( GTK_TREE_VIEW(view), -1, "Name", renderer, "text", column_runner, NULL);
 178   column_runner++;
 179   gtk_tree_view_insert_column_with_attributes( GTK_TREE_VIEW(view), -1, "Country", renderer, "text", column_runner, NULL);
 180   column_runner++;
 181   gtk_tree_view_insert_column_with_attributes( GTK_TREE_VIEW(view), -1, "Lat/Lon", renderer, "text", column_runner, NULL);
 182   gtk_tree_view_set_headers_visible( GTK_TREE_VIEW(view), TRUE);
 183   gtk_tree_view_set_model(GTK_TREE_VIEW(view), GTK_TREE_MODEL(store));
 184   gtk_tree_selection_set_mode( gtk_tree_view_get_selection(GTK_TREE_VIEW(view)),
 185       multiple_selection_allowed ? GTK_SELECTION_MULTIPLE : GTK_SELECTION_BROWSE );
 186   g_object_unref(store);
 187
 188   gtk_box_pack_start (GTK_BOX(GTK_DIALOG(dialog)->vbox), label, FALSE, FALSE, 0);
 189   gtk_widget_show ( label );
 190   gtk_box_pack_start (GTK_BOX(GTK_DIALOG(dialog)->vbox), view, FALSE, FALSE, 0);
 191   gtk_widget_show ( view );
 192   while ( gtk_dialog_run (GTK_DIALOG (dialog)) == GTK_RESPONSE_ACCEPT )
 193   {
 194     GtkTreeSelection *selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(view));
 195     GList *selected_geonames = NULL;
 196
 197     gtk_tree_model_get_iter_first( GTK_TREE_MODEL(store), &iter);
 198     geoname_runner = geonames;
 199     while (geoname_runner)
 200     {
 201       to_copy = FALSE;
 202       if (multiple_selection_allowed)
 203       {
 204         gtk_tree_model_get(GTK_TREE_MODEL(store), &iter, 0, &checked, -1);
 205         if (checked) {
 206           to_copy = TRUE;
 207         }
 208       }
 209       else
 210       {
 211         if (gtk_tree_selection_iter_is_selected(selection, &iter))
 212         {
 213           to_copy = TRUE;
 214         }
 215       }
 216       if (to_copy) {
 217         found_geoname *copied = copy_found_geoname(geoname_runner->data);
 218         selected_geonames = g_list_prepend(selected_geonames, copied);
 219       }
 220       geoname_runner = g_list_next(geoname_runner);
 221       gtk_tree_model_iter_next(GTK_TREE_MODEL(store), &iter);
 222     }
 223     if (selected_geonames)
 224     {
 225       gtk_widget_destroy ( dialog );
 226       return (selected_geonames);
 227     }
 228     a_dialog_error_msg(parent, _("Nothing was selected"));
 229   }
 230   gtk_widget_destroy ( dialog );
 231   return NULL;
 232 }
 233
 234 GList *get_entries_from_file(gchar *file_name)
 235 {
 236   gchar *text, *pat;
 237   GMappedFile *mf;
 238   gsize len;
 239   gboolean more = TRUE;
 240   gchar lat_buf[32], lon_buf[32];
 241   gchar *s;
 242   gint fragment_len;
 243   GList *found_places = NULL;
 244   found_geoname *geoname = NULL;
 245   gchar **found_entries;
 246   gchar *entry;
 247   int entry_runner;
 248   gchar *wikipedia_url = NULL;
 249   gchar *thumbnail_url = NULL;
 250
 251   lat_buf[0] = lon_buf[0] = '\0';
 252
 253   if ((mf = g_mapped_file_new(file_name, FALSE, NULL)) == NULL) {
 254     g_critical(_("couldn't map temp file"));
 255     exit(1);
 256   }
 257   len = g_mapped_file_get_length(mf);
 258   text = g_mapped_file_get_contents(mf);
 259
 260   if (g_strstr_len(text, len, GEONAMES_SEARCH_NOT_FOUND) != NULL) {
 261     more = FALSE;
 262   }
 263   found_entries = g_strsplit(text, "},", 0);
 264   entry_runner = 0;
 265   entry = found_entries[entry_runner];
 266   while (entry)
 267   {
 268     more = TRUE;
 269     geoname = new_found_geoname();
 270     if ((pat = g_strstr_len(entry, strlen(entry), GEONAMES_COUNTRY_PATTERN))) {
 271       pat += strlen(GEONAMES_COUNTRY_PATTERN);
 272       fragment_len = 0;
 273       s = pat;
 274       while (*pat != '"') {
 275         fragment_len++;
 276         pat++;
 277       }
 278       geoname -> country = g_strndup(s, fragment_len);
 279     }
 280     if ((pat = g_strstr_len(entry, strlen(entry), GEONAMES_LONGITUDE_PATTERN)) == NULL) {
 281       more = FALSE;
 282     }
 283     else {
 284       pat += strlen(GEONAMES_LONGITUDE_PATTERN);
 285       s = lon_buf;
 286       if (*pat == '-')
 287         *s++ = *pat++;
 288       while ((s < (lon_buf + sizeof(lon_buf))) && (pat < (text + len)) &&
 289               (g_ascii_isdigit(*pat) || (*pat == '.')))
 290         *s++ = *pat++;
 291       *s = '\0';
 292       if ((pat >= (text + len)) || (lon_buf[0] == '\0')) {
 293         more = FALSE;
 294       }
 295       geoname->ll.lon = g_ascii_strtod(lon_buf, NULL);
 296     }
 297     if ((pat = g_strstr_len(entry, strlen(entry), GEONAMES_NAME_PATTERN))) {
 298       pat += strlen(GEONAMES_NAME_PATTERN);
 299       fragment_len = 0;
 300       s = pat;
 301       while (*pat != '"') {
 302         fragment_len++;
 303         pat++;
 304       }
 305       geoname -> name = g_strndup(s, fragment_len);
 306     }
 307     if ((pat = g_strstr_len(entry, strlen(entry), GEONAMES_TITLE_PATTERN))) {
 308       pat += strlen(GEONAMES_TITLE_PATTERN);
 309       fragment_len = 0;
 310       s = pat;
 311       while (*pat != '"') {
 312         fragment_len++;
 313         pat++;
 314       }
 315       geoname -> name = g_strndup(s, fragment_len);
 316     }
 317     if ((pat = g_strstr_len(entry, strlen(entry), GEONAMES_WIKIPEDIAURL_PATTERN))) {
 318       pat += strlen(GEONAMES_WIKIPEDIAURL_PATTERN);
 319       fragment_len = 0;
 320       s = pat;
 321       while (*pat != '"') {
 322         fragment_len++;
 323         pat++;
 324       }
 325       wikipedia_url = g_strndup(s, fragment_len);
 326     }
 327     if ((pat = g_strstr_len(entry, strlen(entry), GEONAMES_THUMBNAILIMG_PATTERN))) {
 328       pat += strlen(GEONAMES_THUMBNAILIMG_PATTERN);
 329       fragment_len = 0;
 330       s = pat;
 331       while (*pat != '"') {
 332         fragment_len++;
 333         pat++;
 334       }
 335       thumbnail_url = g_strndup(s, fragment_len);
 336     }
 337     if ((pat = g_strstr_len(entry, strlen(entry), GEONAMES_LATITUDE_PATTERN)) == NULL) {
 338       more = FALSE;
 339     }
 340     else {
 341       pat += strlen(GEONAMES_LATITUDE_PATTERN);
 342       s = lat_buf;
 343       if (*pat == '-')
 344         *s++ = *pat++;
 345       while ((s < (lat_buf + sizeof(lat_buf))) && (pat < (text + len)) &&
 346               (g_ascii_isdigit(*pat) || (*pat == '.')))
 347         *s++ = *pat++;
 348       *s = '\0';
 349       if ((pat >= (text + len)) || (lat_buf[0] == '\0')) {
 350         more = FALSE;
 351       }
 352       geoname->ll.lat = g_ascii_strtod(lat_buf, NULL);
 353     }
 354     if (!more) {
 355       if (geoname) {
 356         g_free(geoname);
 357       }
 358     }
 359     else {
 360       if (wikipedia_url) {
 361         if (thumbnail_url) {
 362           geoname -> desc = g_strdup_printf("<a href=\"http://%s\" target=\"_blank\"><img src=\"%s\" border=\"0\"/></a>", wikipedia_url, thumbnail_url);
 363         }
 364         else {
 365           geoname -> desc = g_strdup_printf("<a href=\"http://%s\" target=\"_blank\">%s</a>", wikipedia_url, geoname->name);
 366         }
 367       }
 368       if (wikipedia_url) {
 369         g_free(wikipedia_url);
 370         wikipedia_url = NULL;
 371       }
 372       if (thumbnail_url) {
 373         g_free(thumbnail_url);
 374         thumbnail_url = NULL;
 375       }
 376       found_places = g_list_prepend(found_places, geoname);
 377     }
 378     entry_runner++;
 379     entry = found_entries[entry_runner];
 380   }
 381   g_strfreev(found_entries);
 382   found_places = g_list_reverse(found_places);
 383   g_mapped_file_free(mf);
 384   return(found_places);
 385 }
 386
 387
 388 gchar *download_url(gchar *uri)
 389 {
 390   FILE *tmp_file;
 391   int tmp_fd;
 392   gchar *tmpname;
 393
 394   if ((tmp_fd = g_file_open_tmp ("vikgsearch.XXXXXX", &tmpname, NULL)) == -1) {
 395     g_critical(_("couldn't open temp file"));
 396     exit(1);
 397   }
 398   tmp_file = fdopen(tmp_fd, "r+");
 399
 400   // TODO: curl may not be available
 401   if (curl_download_uri(uri, tmp_file, NULL, 0)) {  // error
 402     fclose(tmp_file);
 403     tmp_file = NULL;
 404     g_remove(tmpname);
 405     g_free(tmpname);
 406     return(NULL);
 407   }
 408   fclose(tmp_file);
 409   tmp_file = NULL;
 410   return(tmpname);
 411 }
 412
 413 void a_geonames_wikipedia_box(VikWindow *vw, VikTrwLayer *vtl, VikLayersPanel *vlp, struct LatLon maxmin[2])
 414 {
 415   gchar *uri;
 416   gchar *tmpname;
 417   GList *wiki_places;
 418   GList *selected;
 419   GList *wp_runner;
 420   VikWaypoint *wiki_wp;
 421   found_geoname *wiki_geoname;
 422
 423   /* encode doubles in a C locale */
 424   gchar *north = a_coords_dtostr(maxmin[0].lat);
 425   gchar *south = a_coords_dtostr(maxmin[1].lat);
 426   gchar *east = a_coords_dtostr(maxmin[0].lon);
 427   gchar *west = a_coords_dtostr(maxmin[1].lon);
 428   uri = g_strdup_printf(GEONAMES_WIKIPEDIA_URL_FMT, north, south, east, west);
 429   g_free(north); north = NULL;
 430   g_free(south); south = NULL;
 431   g_free(east);  east = NULL;
 432   g_free(west);  west = NULL;
 433   tmpname = download_url(uri);
 434   if (!tmpname) {
 435     none_found(vw);
 436     return;
 437   }
 438   wiki_places = get_entries_from_file(tmpname);
 439   if (g_list_length(wiki_places) == 0) {
 440     none_found(vw);
 441     return;
 442   }
 443   selected = a_select_geoname_from_list(VIK_GTK_WINDOW_FROM_WIDGET(vw), wiki_places, TRUE, "Select articles", "Select the articles you want to add.");
 444   wp_runner = selected;
 445   while (wp_runner) {
 446     wiki_geoname = (found_geoname *)wp_runner->data;
 447     wiki_wp = vik_waypoint_new();
 448     wiki_wp->visible = TRUE;
 449     vik_coord_load_from_latlon(&(wiki_wp->coord), vik_trw_layer_get_coord_mode ( vtl ), &(wiki_geoname->ll));
 450     vik_waypoint_set_comment(wiki_wp, wiki_geoname->desc);
 451     vik_trw_layer_filein_add_waypoint ( vtl, wiki_geoname->name, wiki_wp );
 452     wp_runner = g_list_next(wp_runner);
 453   }
 454   free_geoname_list(wiki_places);
 455   free_geoname_list(selected);
 456   g_free(uri);
 457   if (tmpname) {
 458     g_free(tmpname);
 459   }
 460   vik_layers_panel_emit_update(vlp);
 461 }