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369126f3 QT |
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 | #include <stdlib.h> | |
23 | #include <string.h> | |
24 | #include <glib/gprintf.h> | |
25 | ||
26 | #include "viking.h" | |
27 | #include "curl_download.h" | |
28 | ||
29 | #define GOOGLE_SEARCH_URL_FMT "http://maps.google.com/maps?q=%s&output=js" | |
844fde6c QT |
30 | #define GOOGLE_SEARCH_PATTERN_1 "{center:{lat:" |
31 | #define GOOGLE_SEARCH_PATTERN_2 ",lng:" | |
369126f3 QT |
32 | |
33 | static gchar *last_search_str = NULL; | |
014128f6 QT |
34 | static VikCoord *last_coord = NULL; |
35 | static gchar *last_successful_search_str = NULL; | |
36 | ||
a3188993 GB |
37 | static DownloadOptions googlesearch_options = { 0, "http://maps.google.com/" }; |
38 | ||
014128f6 QT |
39 | gchar * a_googlesearch_get_search_string_for_this_place(VikWindow *vw) |
40 | { | |
812909d1 QT |
41 | if (!last_coord) |
42 | return NULL; | |
43 | ||
014128f6 QT |
44 | VikViewport *vvp = vik_window_viewport(vw); |
45 | VikCoord *cur_center = vik_viewport_get_center(vvp); | |
46 | if (vik_coord_equals(cur_center, last_coord)) { | |
47 | return(last_successful_search_str); | |
48 | } | |
49 | else | |
50 | return NULL; | |
51 | } | |
369126f3 QT |
52 | |
53 | static gboolean prompt_try_again(VikWindow *vw) | |
54 | { | |
55 | GtkWidget *dialog = NULL; | |
56 | gboolean ret = TRUE; | |
57 | ||
58 | dialog = gtk_dialog_new_with_buttons ( "", GTK_WINDOW(vw), 0, GTK_STOCK_OK, GTK_RESPONSE_ACCEPT, GTK_STOCK_CANCEL, GTK_RESPONSE_REJECT, NULL ); | |
59 | gtk_window_set_title(GTK_WINDOW(dialog), "Search"); | |
60 | ||
61 | GtkWidget *search_label = gtk_label_new("I don't know that place. Do you want another search?"); | |
62 | gtk_box_pack_start ( GTK_BOX(GTK_DIALOG(dialog)->vbox), search_label, FALSE, FALSE, 5 ); | |
63 | gtk_widget_show_all(dialog); | |
64 | ||
65 | if ( gtk_dialog_run ( GTK_DIALOG(dialog) ) != GTK_RESPONSE_ACCEPT ) | |
66 | ret = FALSE; | |
67 | ||
68 | gtk_widget_destroy(dialog); | |
69 | return ret; | |
70 | } | |
71 | ||
72 | static gchar * a_prompt_for_search_string(VikWindow *vw) | |
73 | { | |
74 | GtkWidget *dialog = NULL; | |
75 | ||
76 | dialog = gtk_dialog_new_with_buttons ( "", GTK_WINDOW(vw), 0, GTK_STOCK_OK, GTK_RESPONSE_ACCEPT, GTK_STOCK_CANCEL, GTK_RESPONSE_REJECT, NULL ); | |
77 | gtk_window_set_title(GTK_WINDOW(dialog), "Search"); | |
78 | ||
79 | GtkWidget *search_label = gtk_label_new("Enter address or place name:"); | |
80 | GtkWidget *search_entry = gtk_entry_new(); | |
81 | if (last_search_str) | |
82 | gtk_entry_set_text(GTK_ENTRY(search_entry), last_search_str); | |
83 | ||
84 | gtk_box_pack_start ( GTK_BOX(GTK_DIALOG(dialog)->vbox), search_label, FALSE, FALSE, 5 ); | |
85 | gtk_box_pack_start ( GTK_BOX(GTK_DIALOG(dialog)->vbox), search_entry, FALSE, FALSE, 5 ); | |
86 | gtk_widget_show_all(dialog); | |
87 | ||
88 | if ( gtk_dialog_run ( GTK_DIALOG(dialog) ) != GTK_RESPONSE_ACCEPT ) { | |
89 | gtk_widget_destroy(dialog); | |
90 | return NULL; | |
91 | } | |
92 | ||
93 | gchar *search_str = g_strdup ( gtk_entry_get_text ( GTK_ENTRY(search_entry) ) ); | |
94 | ||
369126f3 QT |
95 | gtk_widget_destroy(dialog); |
96 | ||
97 | if (search_str[0] != '\0') { | |
98 | if (last_search_str) | |
99 | g_free(last_search_str); | |
100 | last_search_str = g_strdup(search_str); | |
101 | } | |
102 | ||
103 | return(search_str); /* search_str needs to be freed by caller */ | |
104 | } | |
105 | ||
106 | static gboolean parse_file_for_latlon(gchar *file_name, struct LatLon *ll) | |
107 | { | |
108 | gchar *text, *pat; | |
109 | GMappedFile *mf; | |
110 | gsize len; | |
111 | gboolean found = TRUE; | |
112 | gchar lat_buf[32], lon_buf[32]; | |
113 | gchar *s; | |
114 | ||
369126f3 QT |
115 | lat_buf[0] = lon_buf[0] = '\0'; |
116 | ||
117 | if ((mf = g_mapped_file_new(file_name, FALSE, NULL)) == NULL) { | |
118 | g_critical("couldn't map temp file\n"); | |
119 | exit(1); | |
120 | } | |
121 | len = g_mapped_file_get_length(mf); | |
122 | text = g_mapped_file_get_contents(mf); | |
123 | ||
124 | if ((pat = g_strstr_len(text, len, GOOGLE_SEARCH_PATTERN_1)) == NULL) { | |
369126f3 QT |
125 | found = FALSE; |
126 | goto done; | |
127 | } | |
369126f3 QT |
128 | pat += strlen(GOOGLE_SEARCH_PATTERN_1); |
129 | s = lat_buf; | |
130 | if (*pat == '-') | |
131 | *s++ = *pat++; | |
132 | while ((s < (lat_buf + sizeof(lat_buf))) && (pat < (text + len)) && | |
133 | (g_ascii_isdigit(*pat) || (*pat == '.'))) | |
134 | *s++ = *pat++; | |
135 | *s = '\0'; | |
136 | if ((pat >= (text + len)) || (lat_buf[0] == '\0')) { | |
137 | found = FALSE; | |
138 | goto done; | |
139 | } | |
140 | ||
141 | if (strncmp(pat, GOOGLE_SEARCH_PATTERN_2, strlen(GOOGLE_SEARCH_PATTERN_2))) { | |
142 | found = FALSE; | |
143 | goto done; | |
144 | } | |
369126f3 QT |
145 | |
146 | pat += strlen(GOOGLE_SEARCH_PATTERN_2); | |
147 | s = lon_buf; | |
148 | ||
149 | if (*pat == '-') | |
150 | *s++ = *pat++; | |
151 | while ((s < (lon_buf + sizeof(lon_buf))) && (pat < (text + len)) && | |
152 | (g_ascii_isdigit(*pat) || (*pat == '.'))) | |
153 | *s++ = *pat++; | |
154 | *s = '\0'; | |
155 | if ((pat >= (text + len)) || (lon_buf[0] == '\0')) { | |
156 | found = FALSE; | |
157 | goto done; | |
158 | } | |
159 | ||
160 | ll->lat = g_ascii_strtod(lat_buf, NULL); | |
161 | ll->lon = g_ascii_strtod(lon_buf, NULL); | |
162 | ||
369126f3 QT |
163 | done: |
164 | g_mapped_file_free(mf); | |
369126f3 QT |
165 | return (found); |
166 | ||
167 | } | |
168 | ||
169 | gchar *uri_escape(gchar *str) | |
170 | { | |
171 | gchar *esc_str = g_malloc(3*strlen(str)); | |
172 | gchar *dst = esc_str; | |
173 | gchar *src; | |
174 | ||
175 | for (src = str; *src; src++) { | |
176 | if (*src == ' ') | |
177 | *dst++ = '+'; | |
178 | else if (g_ascii_isalnum(*src)) | |
179 | *dst++ = *src; | |
180 | else { | |
181 | g_sprintf(dst, "%%%02X", *src); | |
182 | dst += 3; | |
183 | } | |
184 | } | |
185 | ||
186 | return(esc_str); | |
187 | } | |
188 | ||
189 | static int google_search_get_coord(VikWindow *vw, VikViewport *vvp, gchar *srch_str, VikCoord *coord) | |
190 | { | |
191 | FILE *tmp_file; | |
192 | int tmp_fd; | |
193 | gchar *tmpname; | |
194 | gchar *uri; | |
195 | gchar *escaped_srch_str; | |
196 | int ret = 0; /* OK */ | |
197 | struct LatLon ll; | |
198 | ||
199 | escaped_srch_str = uri_escape(srch_str); | |
200 | ||
201 | if ((tmp_fd = g_file_open_tmp (NULL, &tmpname, NULL)) == -1) { | |
202 | g_critical("couldn't open temp file\n"); | |
203 | exit(1); | |
204 | } | |
205 | ||
206 | tmp_file = fdopen(tmp_fd, "r+"); | |
207 | //uri = g_strdup_printf(GOOGLE_SEARCH_URL_FMT, srch_str); | |
208 | uri = g_strdup_printf(GOOGLE_SEARCH_URL_FMT, escaped_srch_str); | |
209 | ||
369126f3 | 210 | /* TODO: curl may not be available */ |
a3188993 | 211 | if (curl_download_uri(uri, tmp_file, &googlesearch_options)) { /* error */ |
88a914be | 212 | fprintf(stderr, "DEBUG: %s() download error\n", __PRETTY_FUNCTION__); |
369126f3 QT |
213 | fclose(tmp_file); |
214 | ret = -1; | |
215 | goto done; | |
216 | } | |
217 | ||
218 | fclose(tmp_file); | |
219 | if (!parse_file_for_latlon(tmpname, &ll)) { | |
220 | ret = -1; | |
221 | goto done; | |
222 | } | |
223 | ||
224 | vik_coord_load_from_latlon ( coord, vik_viewport_get_coord_mode(vvp), &ll ); | |
225 | ||
014128f6 QT |
226 | if (last_coord) |
227 | g_free(last_coord); | |
228 | last_coord = g_malloc(sizeof(VikCoord)); | |
229 | *last_coord = *coord; | |
230 | if (last_successful_search_str) | |
231 | g_free(last_successful_search_str); | |
232 | last_successful_search_str = g_strdup(last_search_str); | |
233 | ||
369126f3 QT |
234 | done: |
235 | g_free(escaped_srch_str); | |
236 | g_free(uri); | |
237 | remove(tmpname); | |
238 | g_free(tmpname); | |
239 | return ret; | |
240 | } | |
241 | ||
242 | void a_google_search(VikWindow *vw, VikLayersPanel *vlp, VikViewport *vvp) | |
243 | { | |
244 | VikCoord new_center; | |
245 | gchar *s_str; | |
246 | gboolean more = TRUE; | |
247 | ||
248 | do { | |
249 | s_str = a_prompt_for_search_string(vw); | |
250 | if ((!s_str) || (s_str[0] == 0)) { | |
251 | more = FALSE; | |
252 | } | |
253 | ||
254 | else if (!google_search_get_coord(vw, vvp, s_str, &new_center)) { | |
255 | vik_viewport_set_center_coord(vvp, &new_center); | |
256 | vik_layers_panel_emit_update(vlp); | |
257 | more = FALSE; | |
258 | } | |
259 | else if (!prompt_try_again(vw)) | |
260 | more = FALSE; | |
261 | g_free(s_str); | |
262 | } while (more); | |
263 | } | |
264 |