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1 | /* | |
2 | * viking -- GPS Data and Topo Analyzer, Explorer, and Manager | |
3 | * | |
4 | * Copyright (C) 2003-2007, 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 | */ | |
21 | #include <gtk/gtk.h> | |
22 | #include <glib/gi18n.h> | |
23 | #include <string.h> | |
24 | #include <stdlib.h> | |
25 | #include <stdio.h> | |
26 | #include <glib/gstdio.h> | |
27 | #include "preferences.h" | |
28 | #include "file.h" | |
29 | ||
30 | // TODO: register_group | |
31 | // TODO: STRING_LIST | |
32 | // TODO: share code in file reading | |
33 | // TODO: remove hackaround in show_window | |
34 | // TODO: move typeddata to uibuilder, make it more used & general, it's a "prettier" solution methinks | |
35 | // maybe this wasn't such a good idea... | |
36 | ||
37 | #define VIKING_PREFS_FILE "viking.prefs" | |
38 | ||
39 | #define TEST_BOOLEAN(str) (! ((str)[0] == '\0' || (str)[0] == '0' || (str)[0] == 'n' || (str)[0] == 'N' || (str)[0] == 'f' || (str)[0] == 'F') ) | |
40 | ||
41 | static GPtrArray *params; | |
42 | static GHashTable *values; | |
43 | gboolean loaded; | |
44 | ||
45 | /************ groups *********/ | |
46 | ||
47 | static GPtrArray *groups_names; | |
48 | static GHashTable *groups_keys_to_indices; // contains gint, NULL (0) is not found, instead 1 is used for 0, 2 for 1, etc. | |
49 | ||
50 | static void preferences_groups_init() | |
51 | { | |
52 | groups_names = g_ptr_array_new(); | |
53 | groups_keys_to_indices = g_hash_table_new_full ( g_str_hash, g_str_equal, g_free, NULL ); | |
54 | } | |
55 | ||
56 | static void preferences_groups_uninit() | |
57 | { | |
58 | g_ptr_array_free ( groups_names, TRUE ); | |
59 | g_hash_table_destroy ( groups_keys_to_indices ); | |
60 | } | |
61 | ||
62 | void a_preferences_register_group ( const gchar *key, const gchar *name ) | |
63 | { | |
64 | if ( g_hash_table_lookup ( groups_keys_to_indices, key ) ) | |
65 | g_error("Duplicate preferences group keys"); | |
66 | else { | |
67 | g_ptr_array_add ( groups_names, g_strdup(name) ); | |
68 | g_hash_table_insert ( groups_keys_to_indices, g_strdup(key), GINT_TO_POINTER ( (gint) groups_names->len ) ); /* index + 1 */ | |
69 | } | |
70 | } | |
71 | ||
72 | /* returns -1 if not found. */ | |
73 | static gint16 preferences_groups_key_to_index( const gchar *key ) | |
74 | { | |
75 | gint index = GPOINTER_TO_INT ( g_hash_table_lookup ( groups_keys_to_indices, key ) ); | |
76 | if ( ! index ) | |
77 | return VIK_LAYER_GROUP_NONE; /* which should be -1 anyway */ | |
78 | return (gint16) (index - 1); | |
79 | } | |
80 | ||
81 | /*****************************/ | |
82 | ||
83 | /************/ | |
84 | ||
85 | typedef struct { | |
86 | VikLayerParamData data; | |
87 | guint8 type; | |
88 | gpointer freeme; // because data.s is const and the compiler complains | |
89 | } VikLayerTypedParamData; | |
90 | ||
91 | void layer_typed_param_data_free(gpointer p) | |
92 | { | |
93 | VikLayerTypedParamData *val = (VikLayerTypedParamData *)p; | |
94 | switch ( val->type ) { | |
95 | case VIK_LAYER_PARAM_STRING: | |
96 | if ( val->freeme ) | |
97 | g_free ( val->freeme ); | |
98 | break; | |
99 | /* TODO: APPLICABLE TO US? NOTE: string layer works auniquely: data.sl should NOT be free'd when | |
100 | * the internals call get_param -- i.e. it should be managed w/in the layer. | |
101 | * The value passed by the internals into set_param should also be managed | |
102 | * by the layer -- i.e. free'd by the layer. | |
103 | */ | |
104 | case VIK_LAYER_PARAM_STRING_LIST: | |
105 | g_error ( "Param strings not implemented in preferences"); //fake it | |
106 | break; | |
107 | } | |
108 | g_free ( val ); | |
109 | } | |
110 | ||
111 | VikLayerTypedParamData *layer_typed_param_data_copy_from_data(guint8 type, VikLayerParamData val) { | |
112 | VikLayerTypedParamData *newval = g_new(VikLayerTypedParamData,1); | |
113 | newval->data = val; | |
114 | newval->type = type; | |
115 | switch ( newval->type ) { | |
116 | case VIK_LAYER_PARAM_STRING: { | |
117 | gchar *s = g_strdup(newval->data.s); | |
118 | newval->data.s = s; | |
119 | newval->freeme = s; | |
120 | break; | |
121 | } | |
122 | /* TODO: APPLICABLE TO US? NOTE: string layer works auniquely: data.sl should NOT be free'd when | |
123 | * the internals call get_param -- i.e. it should be managed w/in the layer. | |
124 | * The value passed by the internals into set_param should also be managed | |
125 | * by the layer -- i.e. free'd by the layer. | |
126 | */ | |
127 | case VIK_LAYER_PARAM_STRING_LIST: | |
128 | g_error ( "Param strings not implemented in preferences"); //fake it | |
129 | break; | |
130 | } | |
131 | return newval; | |
132 | } | |
133 | ||
134 | /* TODO: share this code with file.c */ | |
135 | VikLayerTypedParamData *layer_data_typed_param_copy_from_string ( guint8 type, const gchar *str ) | |
136 | { | |
137 | g_assert ( type != VIK_LAYER_PARAM_STRING_LIST ); | |
138 | VikLayerTypedParamData *rv = g_new(VikLayerTypedParamData,1); | |
139 | rv->type = type; | |
140 | switch ( type ) | |
141 | { | |
142 | case VIK_LAYER_PARAM_DOUBLE: rv->data.d = strtod(str, NULL); break; | |
143 | case VIK_LAYER_PARAM_UINT: rv->data.u = strtoul(str, NULL, 10); break; | |
144 | case VIK_LAYER_PARAM_INT: rv->data.i = strtol(str, NULL, 10); break; | |
145 | case VIK_LAYER_PARAM_BOOLEAN: rv->data.b = TEST_BOOLEAN(str); break; | |
146 | case VIK_LAYER_PARAM_COLOR: memset(&(rv->data.c), 0, sizeof(rv->data.c)); /* default: black */ | |
147 | gdk_color_parse ( str, &(rv->data.c) ); break; | |
148 | /* STRING or STRING_LIST -- if STRING_LIST, just set param to add a STRING */ | |
149 | default: { | |
150 | gchar *s = g_strdup(str); | |
151 | rv->data.s = s; | |
152 | rv->freeme = s; | |
153 | } | |
154 | } | |
155 | return rv; | |
156 | } | |
157 | ||
158 | /************/ | |
159 | ||
160 | /* MAKES A COPY OF THE KEY!!! */ | |
161 | static gboolean preferences_load_parse_param(gchar *buf, gchar **key, gchar **val ) | |
162 | { | |
163 | gchar *eq_pos; | |
164 | gint len; | |
165 | ||
166 | // comments, special characters in viking file format | |
167 | if ( buf == NULL || buf[0] == '\0' || buf[0] == '~' || buf[0] == '=' || buf[0] == '#' ) | |
168 | return FALSE; | |
169 | eq_pos = strchr ( buf, '=' ); | |
170 | if ( ! eq_pos ) | |
171 | return FALSE; | |
172 | *key = g_strndup ( buf, eq_pos - buf ); | |
173 | *val = eq_pos + 1; | |
174 | len = strlen(*val); | |
175 | if ( len > 0 ) | |
176 | if ( (*val)[len - 1] == '\n' ) | |
177 | (*val) [ len - 1 ] = '\0'; /* cut off newline */ | |
178 | return TRUE; | |
179 | } | |
180 | ||
181 | static gboolean preferences_load_from_file() | |
182 | { | |
183 | gchar *fn = g_build_filename(a_get_viking_dir(), VIKING_PREFS_FILE, NULL); | |
184 | FILE *f = g_fopen(fn, "r"); | |
185 | g_free ( fn ); | |
186 | ||
187 | if ( f ) { | |
188 | gchar buf[4096]; | |
189 | gchar *key, *val; | |
190 | VikLayerTypedParamData *oldval, *newval; | |
191 | while ( ! feof (f) ) { | |
192 | if (fgets(buf,sizeof(buf),f) == NULL) | |
193 | break; | |
194 | if ( preferences_load_parse_param(buf, &key, &val ) ) { | |
195 | // if it's not in there, ignore it | |
196 | oldval = g_hash_table_lookup ( values, key ); | |
197 | if ( ! oldval ) { | |
198 | g_free(key); | |
199 | continue; | |
200 | } | |
201 | ||
202 | // otherwise change it (you know the type!) | |
203 | // if it's a string list do some funky stuff ... yuck... not yet. | |
204 | if ( oldval->type == VIK_LAYER_PARAM_STRING_LIST ) | |
205 | g_error ( "Param strings not implemented in preferences"); // fake it | |
206 | ||
207 | newval = layer_data_typed_param_copy_from_string ( oldval->type, val ); | |
208 | g_hash_table_insert ( values, key, newval ); | |
209 | ||
210 | g_free(key); | |
211 | ||
212 | // change value | |
213 | } | |
214 | } | |
215 | fclose(f); | |
216 | f = NULL; | |
217 | return TRUE; | |
218 | } | |
219 | return FALSE; | |
220 | } | |
221 | ||
222 | static void preferences_run_setparam ( gpointer notused, guint16 i, VikLayerParamData data, VikLayerParam *params ) | |
223 | { | |
224 | if ( params[i].type == VIK_LAYER_PARAM_STRING_LIST ) | |
225 | g_error ( "Param strings not implemented in preferences"); //fake it | |
226 | g_hash_table_insert ( values, (gchar *)(params[i].name), layer_typed_param_data_copy_from_data(params[i].type, data) ); | |
227 | } | |
228 | ||
229 | /* Allow preferences to be manipulated externally */ | |
230 | void a_preferences_run_setparam ( VikLayerParamData data, VikLayerParam *params ) | |
231 | { | |
232 | preferences_run_setparam (NULL, 0, data, params); | |
233 | } | |
234 | ||
235 | static VikLayerParamData preferences_run_getparam ( gpointer notused, guint16 i, gboolean notused2 ) | |
236 | { | |
237 | VikLayerTypedParamData *val = (VikLayerTypedParamData *) g_hash_table_lookup ( values, ((VikLayerParam *)g_ptr_array_index(params,i))->name ); | |
238 | g_assert ( val != NULL ); | |
239 | if ( val->type == VIK_LAYER_PARAM_STRING_LIST ) | |
240 | g_error ( "Param strings not implemented in preferences"); //fake it | |
241 | return val->data; | |
242 | } | |
243 | ||
244 | /* TRUE on success */ | |
245 | gboolean a_preferences_save_to_file() | |
246 | { | |
247 | gchar *fn = g_build_filename(a_get_viking_dir(), VIKING_PREFS_FILE, NULL); | |
248 | ||
249 | // TODO: error checking | |
250 | FILE *f = g_fopen(fn, "w"); | |
251 | /* Since preferences files saves OSM login credentials, | |
252 | * it'll be better to store it in secret. | |
253 | */ | |
254 | g_chmod(fn, 0600); | |
255 | g_free ( fn ); | |
256 | ||
257 | if ( f ) { | |
258 | VikLayerParam *param; | |
259 | VikLayerTypedParamData *val; | |
260 | int i; | |
261 | for ( i = 0; i < params->len; i++ ) { | |
262 | param = (VikLayerParam *) g_ptr_array_index(params,i); | |
263 | val = (VikLayerTypedParamData *) g_hash_table_lookup ( values, param->name ); | |
264 | g_assert ( val != NULL ); | |
265 | file_write_layer_param ( f, param->name, val->type, val->data ); | |
266 | } | |
267 | fclose(f); | |
268 | f = NULL; | |
269 | return TRUE; | |
270 | } | |
271 | ||
272 | return FALSE; | |
273 | } | |
274 | ||
275 | ||
276 | void a_preferences_show_window(GtkWindow *parent) { | |
277 | //VikLayerParamData *a_uibuilder_run_dialog ( GtkWindow *parent, VikLayerParam \*params, // guint16 params_count, gchar **groups, guint8 groups_count, // VikLayerParamData *params_defaults ) | |
278 | // TODO: THIS IS A MAJOR HACKAROUND, but ok when we have only a couple preferences. | |
279 | gint params_count = params->len; | |
280 | VikLayerParam *contiguous_params = g_new(VikLayerParam,params_count); | |
281 | int i; | |
282 | for ( i = 0; i < params->len; i++ ) { | |
283 | contiguous_params[i] = *((VikLayerParam*)(g_ptr_array_index(params,i))); | |
284 | } | |
285 | loaded = TRUE; | |
286 | preferences_load_from_file(); | |
287 | if ( a_uibuilder_properties_factory ( _("Preferences"), parent, contiguous_params, params_count, | |
288 | (gchar **) groups_names->pdata, groups_names->len, // groups, groups_count, // groups? what groups?! | |
289 | (gboolean (*) (gpointer,guint16,VikLayerParamData,gpointer,gboolean)) preferences_run_setparam, | |
290 | NULL /* not used */, contiguous_params, | |
291 | preferences_run_getparam, NULL /* not used */ ) ) { | |
292 | a_preferences_save_to_file(); | |
293 | } | |
294 | g_free ( contiguous_params ); | |
295 | } | |
296 | ||
297 | void a_preferences_register(VikLayerParam *pref, VikLayerParamData defaultval, const gchar *group_key ) | |
298 | { | |
299 | /* copy value */ | |
300 | VikLayerParam *newpref = g_new(VikLayerParam,1); | |
301 | *newpref = *pref; | |
302 | VikLayerTypedParamData *newval = layer_typed_param_data_copy_from_data(pref->type, defaultval); | |
303 | if ( group_key ) | |
304 | newpref->group = preferences_groups_key_to_index ( group_key ); | |
305 | ||
306 | g_ptr_array_add ( params, newpref ); | |
307 | g_hash_table_insert ( values, (gchar *)pref->name, newval ); | |
308 | } | |
309 | ||
310 | void a_preferences_init() | |
311 | { | |
312 | preferences_groups_init(); | |
313 | ||
314 | /* not copied */ | |
315 | params = g_ptr_array_new (); | |
316 | ||
317 | /* key not copied (same ptr as in pref), actual param data yes */ | |
318 | values = g_hash_table_new_full ( g_str_hash, g_str_equal, NULL, layer_typed_param_data_free); | |
319 | ||
320 | loaded = FALSE; | |
321 | } | |
322 | ||
323 | void a_preferences_uninit() | |
324 | { | |
325 | preferences_groups_uninit(); | |
326 | ||
327 | g_ptr_array_free ( params, TRUE ); | |
328 | g_hash_table_destroy ( values ); | |
329 | } | |
330 | ||
331 | ||
332 | ||
333 | VikLayerParamData *a_preferences_get(const gchar *key) | |
334 | { | |
335 | if ( ! loaded ) { | |
336 | /* since we can't load the file in a_preferences_init (no params registered yet), | |
337 | * do it once before we get the first key. */ | |
338 | preferences_load_from_file(); | |
339 | loaded = TRUE; | |
340 | } | |
341 | return g_hash_table_lookup ( values, key ); | |
342 | } |