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1 | /* | |
2 | * viking -- GPS Data and Topo Analyzer, Explorer, and Manager | |
3 | * | |
4 | * Copyright (C) 2003-2005, Quy Tonthat <qtonthat@gmail.com> | |
5 | * Copyright (C) 2009, Guilhem Bonnefille <guilhem.bonnefille@gmail.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | */ | |
21 | #ifdef HAVE_CONFIG_H | |
22 | #include "config.h" | |
23 | #endif | |
24 | #include <stdlib.h> | |
25 | #include <stdio.h> | |
26 | #include <string.h> | |
27 | #include <glib.h> | |
28 | #include <glib/gstdio.h> | |
29 | #include <glib/gprintf.h> | |
30 | #include <glib/gi18n.h> | |
31 | ||
32 | #include "viking.h" | |
33 | #include "util.h" | |
34 | #include "curl_download.h" | |
35 | ||
36 | #include "googlesearch.h" | |
37 | ||
38 | /* Compatibility */ | |
39 | #if ! GLIB_CHECK_VERSION(2,22,0) | |
40 | #define g_mapped_file_unref g_mapped_file_free | |
41 | #endif | |
42 | ||
43 | #define GOOGLE_GOTO_URL_FMT "http://maps.google.com/maps?q=%s&output=js" | |
44 | #define GOOGLE_GOTO_PATTERN_1 "{center:{lat:" | |
45 | #define GOOGLE_GOTO_PATTERN_2 ",lng:" | |
46 | #define GOOGLE_GOTO_NOT_FOUND "not understand the location" | |
47 | ||
48 | static DownloadMapOptions googlesearch_options = { FALSE, FALSE, "http://maps.google.com/", 2, a_check_map_file, NULL }; | |
49 | ||
50 | static void google_goto_tool_finalize ( GObject *gob ); | |
51 | ||
52 | static gchar *google_goto_tool_get_url_format ( VikGotoTool *self ); | |
53 | static DownloadMapOptions *google_goto_tool_get_download_options ( VikGotoTool *self ); | |
54 | static gboolean google_goto_tool_parse_file_for_latlon(VikGotoTool *self, gchar *filename, struct LatLon *ll); | |
55 | ||
56 | G_DEFINE_TYPE (GoogleGotoTool, google_goto_tool, VIK_GOTO_TOOL_TYPE) | |
57 | ||
58 | static void google_goto_tool_class_init ( GoogleGotoToolClass *klass ) | |
59 | { | |
60 | GObjectClass *object_class; | |
61 | VikGotoToolClass *parent_class; | |
62 | ||
63 | object_class = G_OBJECT_CLASS (klass); | |
64 | ||
65 | object_class->finalize = google_goto_tool_finalize; | |
66 | ||
67 | parent_class = VIK_GOTO_TOOL_CLASS (klass); | |
68 | ||
69 | parent_class->get_url_format = google_goto_tool_get_url_format; | |
70 | parent_class->get_download_options = google_goto_tool_get_download_options; | |
71 | parent_class->parse_file_for_latlon = google_goto_tool_parse_file_for_latlon; | |
72 | } | |
73 | ||
74 | GoogleGotoTool *google_goto_tool_new () | |
75 | { | |
76 | return GOOGLE_GOTO_TOOL ( g_object_new ( GOOGLE_GOTO_TOOL_TYPE, "label", "Google", NULL ) ); | |
77 | } | |
78 | ||
79 | static void google_goto_tool_init ( GoogleGotoTool *vlp ) | |
80 | { | |
81 | } | |
82 | ||
83 | static void google_goto_tool_finalize ( GObject *gob ) | |
84 | { | |
85 | G_OBJECT_GET_CLASS(gob)->finalize(gob); | |
86 | } | |
87 | ||
88 | static gboolean google_goto_tool_parse_file_for_latlon(VikGotoTool *self, gchar *file_name, struct LatLon *ll) | |
89 | { | |
90 | gchar *text, *pat; | |
91 | GMappedFile *mf; | |
92 | gsize len; | |
93 | gboolean found = TRUE; | |
94 | gchar lat_buf[32], lon_buf[32]; | |
95 | gchar *s; | |
96 | ||
97 | lat_buf[0] = lon_buf[0] = '\0'; | |
98 | ||
99 | if ((mf = g_mapped_file_new(file_name, FALSE, NULL)) == NULL) { | |
100 | g_critical(_("couldn't map temp file")); | |
101 | return FALSE; | |
102 | } | |
103 | len = g_mapped_file_get_length(mf); | |
104 | text = g_mapped_file_get_contents(mf); | |
105 | ||
106 | if (g_strstr_len(text, len, GOOGLE_GOTO_NOT_FOUND) != NULL) { | |
107 | found = FALSE; | |
108 | goto done; | |
109 | } | |
110 | ||
111 | if ((pat = g_strstr_len(text, len, GOOGLE_GOTO_PATTERN_1)) == NULL) { | |
112 | found = FALSE; | |
113 | goto done; | |
114 | } | |
115 | pat += strlen(GOOGLE_GOTO_PATTERN_1); | |
116 | s = lat_buf; | |
117 | if (*pat == '-') | |
118 | *s++ = *pat++; | |
119 | while ((s < (lat_buf + sizeof(lat_buf))) && (pat < (text + len)) && | |
120 | (g_ascii_isdigit(*pat) || (*pat == '.'))) | |
121 | *s++ = *pat++; | |
122 | *s = '\0'; | |
123 | if ((pat >= (text + len)) || (lat_buf[0] == '\0')) { | |
124 | found = FALSE; | |
125 | goto done; | |
126 | } | |
127 | ||
128 | if (strncmp(pat, GOOGLE_GOTO_PATTERN_2, strlen(GOOGLE_GOTO_PATTERN_2))) { | |
129 | found = FALSE; | |
130 | goto done; | |
131 | } | |
132 | ||
133 | pat += strlen(GOOGLE_GOTO_PATTERN_2); | |
134 | s = lon_buf; | |
135 | ||
136 | if (*pat == '-') | |
137 | *s++ = *pat++; | |
138 | while ((s < (lon_buf + sizeof(lon_buf))) && (pat < (text + len)) && | |
139 | (g_ascii_isdigit(*pat) || (*pat == '.'))) | |
140 | *s++ = *pat++; | |
141 | *s = '\0'; | |
142 | if ((pat >= (text + len)) || (lon_buf[0] == '\0')) { | |
143 | found = FALSE; | |
144 | goto done; | |
145 | } | |
146 | ||
147 | ll->lat = g_ascii_strtod(lat_buf, NULL); | |
148 | ll->lon = g_ascii_strtod(lon_buf, NULL); | |
149 | ||
150 | done: | |
151 | g_mapped_file_unref(mf); | |
152 | return (found); | |
153 | ||
154 | } | |
155 | ||
156 | static gchar *google_goto_tool_get_url_format ( VikGotoTool *self ) | |
157 | { | |
158 | return GOOGLE_GOTO_URL_FMT; | |
159 | } | |
160 | ||
161 | DownloadMapOptions *google_goto_tool_get_download_options ( VikGotoTool *self ) | |
162 | { | |
163 | return &googlesearch_options; | |
164 | } |