2 * viking -- GPS Data and Topo Analyzer, Explorer, and Manager
4 * Copyright (C) 2003-2005, Evan Battaglia <gtoevan@gmx.net>
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.
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.
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
29 #include <glib/gstdio.h>
31 #define TEST_BOOLEAN(str) (! ((str)[0] == '\0' || (str)[0] == '0' || (str)[0] == 'n' || (str)[0] == 'N' || (str)[0] == 'f' || (str)[0] == 'F') )
32 #define VIK_MAGIC "#VIK"
33 #define GPX_MAGIC "<?xm"
34 #define VIK_MAGIC_LEN 4
42 typedef struct _Stack Stack;
49 static void pop(Stack **stack) {
50 Stack *tmp = (*stack)->under;
55 static void push(Stack **stack)
57 Stack *tmp = g_malloc ( sizeof ( Stack ) );
62 static gboolean check_magic ( FILE *f, const gchar *magic_number )
64 gchar magic[VIK_MAGIC_LEN];
67 if ( fread(magic, 1, sizeof(magic), f) == sizeof(magic) &&
68 strncmp(magic, magic_number, sizeof(magic)) == 0 )
70 for ( i = sizeof(magic)-1; i >= 0; i-- ) /* the ol' pushback */
76 static gboolean str_starts_with ( const gchar *haystack, const gchar *needle, guint16 len_needle, gboolean must_be_longer )
78 if ( strlen(haystack) > len_needle - (!must_be_longer) && strncasecmp ( haystack, needle, len_needle ) == 0 )
83 static guint16 layer_type_from_string ( const gchar *str )
86 for ( i = 0; i < VIK_LAYER_NUM_TYPES; i++ )
87 if ( strcasecmp ( str, vik_layer_get_interface(i)->name ) == 0 )
92 static void write_layer_params_and_data ( VikLayer *l, FILE *f )
94 VikLayerParam *params = vik_layer_get_interface(l->type)->params;
95 VikLayerFuncGetParam get_param = vik_layer_get_interface(l->type)->get_param;
97 fprintf ( f, "name=%s\n", l->name ? l->name : "" );
99 fprintf ( f, "visible=f\n" );
101 if ( params && get_param )
103 VikLayerParamData data;
104 guint16 i, params_count = vik_layer_get_interface(l->type)->params_count;
105 for ( i = 0; i < params_count; i++ )
107 data = get_param(l,i);
109 /* string lists are handled differently. We get a GList (that shouldn't
110 * be freed) back for get_param and if it is null we shouldn't write
111 * anything at all (otherwise we'd read in a list with an empty string,
112 * not an empty string list.
114 if ( params[i].type == VIK_LAYER_PARAM_STRING_LIST ) {
116 GList *iter = (GList *)data.sl;
118 fprintf ( f, "%s=", params[i].name );
119 fprintf ( f, "%s\n", (gchar *)(iter->data) );
124 fprintf ( f, "%s=", params[i].name );
125 switch ( params[i].type )
127 case VIK_LAYER_PARAM_DOUBLE: {
128 // char buf[15]; /* locale independent */
129 // fprintf ( f, "%s\n", (char *) g_dtostr (data.d, buf, sizeof (buf)) ); break;
130 fprintf ( f, "%f\n", data.d );
133 case VIK_LAYER_PARAM_UINT: fprintf ( f, "%d\n", data.u ); break;
134 case VIK_LAYER_PARAM_INT: fprintf ( f, "%d\n", data.i ); break;
135 case VIK_LAYER_PARAM_BOOLEAN: fprintf ( f, "%c\n", data.b ? 't' : 'f' ); break;
136 case VIK_LAYER_PARAM_STRING: fprintf ( f, "%s\n", data.s ); break;
137 case VIK_LAYER_PARAM_COLOR: fprintf ( f, "#%.2x%.2x%.2x\n", (int)(data.c.red/256),(int)(data.c.green/256),(int)(data.c.blue/256)); break;
142 if ( vik_layer_get_interface(l->type)->write_file_data )
144 fprintf ( f, "\n\n~LayerData\n" );
145 vik_layer_get_interface(l->type)->write_file_data ( l, f );
146 fprintf ( f, "~EndLayerData\n" );
149 write param, and get_value, etc.
150 then run layer data, and that's it.
154 static void file_write ( VikAggregateLayer *top, FILE *f, gpointer vp )
157 VikLayer *current_layer;
162 stack->data = (gpointer) vik_aggregate_layer_get_children(VIK_AGGREGATE_LAYER(top));
166 vik_coord_to_latlon ( vik_viewport_get_center ( VIK_VIEWPORT(vp) ), &ll );
168 switch ( vik_viewport_get_drawmode ( VIK_VIEWPORT(vp) ) ) {
169 case VIK_VIEWPORT_DRAWMODE_UTM: modestring = "utm"; break;
170 case VIK_VIEWPORT_DRAWMODE_EXPEDIA: modestring = "expedia"; break;
171 case VIK_VIEWPORT_DRAWMODE_GOOGLE: modestring = "google"; break;
172 case VIK_VIEWPORT_DRAWMODE_KH: modestring = "kh"; break;
173 default: modestring = "mercator";
176 fprintf ( f, "#VIKING GPS Data file " VIKING_URL "\n\nxmpp=%f\nympp=%f\nlat=%f\nlon=%f\nmode=%s\ncolor=%s\ndrawscale=%s\ndrawcentermark=%s",
177 vik_viewport_get_xmpp ( VIK_VIEWPORT(vp) ), vik_viewport_get_ympp ( VIK_VIEWPORT(vp) ), ll.lat, ll.lon,
178 modestring, vik_viewport_get_background_color(VIK_VIEWPORT(vp)),
179 vik_viewport_get_draw_scale(VIK_VIEWPORT(vp)) ? "t" : "f",
180 vik_viewport_get_draw_centermark(VIK_VIEWPORT(vp)) ? "t" : "f" );
182 if ( ! VIK_LAYER(top)->visible )
183 fprintf ( f, "visible=f\n" );
185 while (stack && stack->data)
187 current_layer = VIK_LAYER(((GList *)stack->data)->data);
188 fprintf ( f, "\n~Layer %s\n", vik_layer_get_interface(current_layer->type)->name );
189 write_layer_params_and_data ( current_layer, f );
190 if ( current_layer->type == VIK_LAYER_AGGREGATE && !vik_aggregate_layer_is_empty(VIK_AGGREGATE_LAYER(current_layer)) )
193 stack->data = (gpointer) vik_aggregate_layer_get_children(VIK_AGGREGATE_LAYER(current_layer));
195 else if ( current_layer->type == VIK_LAYER_GPS && !vik_gps_layer_is_empty(VIK_GPS_LAYER(current_layer)) )
198 stack->data = (gpointer) vik_gps_layer_get_children(VIK_GPS_LAYER(current_layer));
202 stack->data = (gpointer) ((GList *)stack->data)->next;
203 fprintf ( f, "~EndLayer\n\n" );
204 while ( stack && (!stack->data) )
209 stack->data = (gpointer) ((GList *)stack->data)->next;
210 fprintf ( f, "~EndLayer\n\n" );
216 get vikaggregatelayer's children (?)
217 foreach write ALL params,
218 then layer data (IF function exists)
222 stack of layers (LIST) we are working on
223 when layer->next == NULL ...
228 static void string_list_delete ( gpointer key, gpointer l, gpointer user_data )
230 GList *iter = (GList *) iter;
232 g_free ( iter->data );
235 g_list_free ( (GList *) iter );
238 static void string_list_set_param (gint i, GList *list, gpointer *layer_and_vp)
242 vik_layer_set_param ( VIK_LAYER(layer_and_vp[0]), i, x, layer_and_vp[1] );
245 static void file_read ( VikAggregateLayer *top, FILE *f, gpointer vp )
248 struct LatLon ll = { 0.0, 0.0 };
254 VikLayerParam *params = NULL; /* for current layer, so we don't have to keep on looking up interface */
255 guint8 params_count = 0;
257 GHashTable *string_lists = g_hash_table_new(g_direct_hash,g_direct_equal);
261 stack->data = (gpointer) top;
263 while ( fgets ( buffer, 4096, f ) )
268 while ( *line == ' ' || *line =='\t' )
271 if ( line[0] == '#' )
276 if ( len > 0 && line[len-1] == '\n' )
278 if ( len > 0 && line[len-1] == '\r' )
285 if ( line[0] == '~' )
290 else if ( str_starts_with ( line, "Layer ", 6, TRUE ) )
292 int parent_type = VIK_LAYER(stack->data)->type;
293 if ( ( ! stack->data ) || ((parent_type != VIK_LAYER_AGGREGATE) && (parent_type != VIK_LAYER_GPS)) )
295 g_warning ( "Line %ld: Layer command inside non-Aggregate Layer (type %d)", line_num, parent_type );
296 push(&stack); /* inside INVALID layer */
302 gint16 type = layer_type_from_string ( line+6 );
306 g_warning ( "Line %ld: Unknown type %s\n", line_num, line+6 );
309 else if (parent_type == VIK_LAYER_GPS)
311 stack->data = (gpointer) vik_gps_layer_get_a_child(VIK_GPS_LAYER(stack->under->data));
312 params = vik_layer_get_interface(type)->params;
313 params_count = vik_layer_get_interface(type)->params_count;
317 stack->data = (gpointer) vik_layer_create ( type, vp, NULL, FALSE );
318 params = vik_layer_get_interface(type)->params;
319 params_count = vik_layer_get_interface(type)->params_count;
323 else if ( str_starts_with ( line, "EndLayer", 8, FALSE ) )
325 if ( stack->under == NULL )
326 g_warning ( "Line %ld: Mismatched ~EndLayer command", line_num );
329 /* add any string lists we've accumulated */
330 gpointer layer_and_vp[2];
331 layer_and_vp[0] = stack->data;
332 layer_and_vp[1] = vp;
333 g_hash_table_foreach ( string_lists, (GHFunc) string_list_set_param, layer_and_vp );
334 g_hash_table_remove_all ( string_lists );
336 if ( stack->data && stack->under->data )
338 if (VIK_LAYER(stack->under->data)->type == VIK_LAYER_AGGREGATE) {
339 vik_aggregate_layer_add_layer ( VIK_AGGREGATE_LAYER(stack->under->data), VIK_LAYER(stack->data) );
340 vik_layer_post_read ( VIK_LAYER(stack->data), vp );
342 else if (VIK_LAYER(stack->under->data)->type == VIK_LAYER_GPS) {
343 /* TODO: anything else needs to be done here ? */
346 g_warning ( "Line %ld: EndLayer command inside non-Aggregate Layer (type %d)", line_num, VIK_LAYER(stack->data)->type );
351 else if ( str_starts_with ( line, "LayerData", 9, FALSE ) )
353 if ( stack->data && vik_layer_get_interface(VIK_LAYER(stack->data)->type)->read_file_data )
354 vik_layer_get_interface(VIK_LAYER(stack->data)->type)->read_file_data ( VIK_LAYER(stack->data), f );
355 /* must read until hits ~EndLayerData */
358 { /* simply skip layer data over */
359 while ( fgets ( buffer, 4096, f ) )
366 if ( len > 0 && line[len-1] == '\n' )
368 if ( len > 0 && line[len-1] == '\r' )
370 if ( strcasecmp ( line, "~EndLayerData" ) == 0 )
378 g_warning ( "Line %ld: Unknown tilde command", line_num );
388 for ( i = 0; i < len; i++ )
389 if ( line[i] == '=' )
392 if ( stack->under == NULL && eq_pos == 4 && strncasecmp ( line, "xmpp", eq_pos ) == 0) /* "hard coded" params: global & for all layer-types */
393 vik_viewport_set_xmpp ( VIK_VIEWPORT(vp), strtod ( line+5, NULL ) );
394 else if ( stack->under == NULL && eq_pos == 4 && strncasecmp ( line, "ympp", eq_pos ) == 0)
395 vik_viewport_set_ympp ( VIK_VIEWPORT(vp), strtod ( line+5, NULL ) );
396 else if ( stack->under == NULL && eq_pos == 3 && strncasecmp ( line, "lat", eq_pos ) == 0 )
397 ll.lat = strtod ( line+4, NULL );
398 else if ( stack->under == NULL && eq_pos == 3 && strncasecmp ( line, "lon", eq_pos ) == 0 )
399 ll.lon = strtod ( line+4, NULL );
400 else if ( stack->under == NULL && eq_pos == 4 && strncasecmp ( line, "mode", eq_pos ) == 0 && strcasecmp ( line+5, "utm" ) == 0)
401 vik_viewport_set_drawmode ( VIK_VIEWPORT(vp), VIK_VIEWPORT_DRAWMODE_UTM);
402 else if ( stack->under == NULL && eq_pos == 4 && strncasecmp ( line, "mode", eq_pos ) == 0 && strcasecmp ( line+5, "expedia" ) == 0)
403 vik_viewport_set_drawmode ( VIK_VIEWPORT(vp), VIK_VIEWPORT_DRAWMODE_EXPEDIA );
404 else if ( stack->under == NULL && eq_pos == 4 && strncasecmp ( line, "mode", eq_pos ) == 0 && strcasecmp ( line+5, "google" ) == 0)
405 vik_viewport_set_drawmode ( VIK_VIEWPORT(vp), VIK_VIEWPORT_DRAWMODE_GOOGLE );
406 else if ( stack->under == NULL && eq_pos == 4 && strncasecmp ( line, "mode", eq_pos ) == 0 && strcasecmp ( line+5, "kh" ) == 0)
407 vik_viewport_set_drawmode ( VIK_VIEWPORT(vp), VIK_VIEWPORT_DRAWMODE_KH );
408 else if ( stack->under == NULL && eq_pos == 4 && strncasecmp ( line, "mode", eq_pos ) == 0 && strcasecmp ( line+5, "mercator" ) == 0)
409 vik_viewport_set_drawmode ( VIK_VIEWPORT(vp), VIK_VIEWPORT_DRAWMODE_MERCATOR );
410 else if ( stack->under == NULL && eq_pos == 5 && strncasecmp ( line, "color", eq_pos ) == 0 )
411 vik_viewport_set_background_color ( VIK_VIEWPORT(vp), line+6 );
412 else if ( stack->under == NULL && eq_pos == 9 && strncasecmp ( line, "drawscale", eq_pos ) == 0 )
413 vik_viewport_set_draw_scale ( VIK_VIEWPORT(vp), TEST_BOOLEAN(line+10) );
414 else if ( stack->under == NULL && eq_pos == 14 && strncasecmp ( line, "drawcentermark", eq_pos ) == 0 )
415 vik_viewport_set_draw_centermark ( VIK_VIEWPORT(vp), TEST_BOOLEAN(line+15) );
416 else if ( stack->under && eq_pos == 4 && strncasecmp ( line, "name", eq_pos ) == 0 )
417 vik_layer_rename ( VIK_LAYER(stack->data), line+5 );
418 else if ( eq_pos == 7 && strncasecmp ( line, "visible", eq_pos ) == 0 )
419 VIK_LAYER(stack->data)->visible = TEST_BOOLEAN(line+8);
420 else if ( eq_pos != -1 && stack->under )
422 gboolean found_match = FALSE;
424 /* go thru layer params. if len == eq_pos && starts_with jazz, set it. */
425 /* also got to check for name and visible. */
429 g_warning ( "Line %ld: No options for this kind of layer", line_num );
433 for ( i = 0; i < params_count; i++ )
434 if ( strlen(params[i].name) == eq_pos && strncasecmp ( line, params[i].name, eq_pos ) == 0 )
438 if ( params[i].type == VIK_LAYER_PARAM_STRING_LIST ) {
439 GList *l = g_list_append ( g_hash_table_lookup ( string_lists, (gpointer) ((gint) i) ), g_strdup(line) );
440 g_hash_table_replace ( string_lists, (gpointer) ((gint)i), l );
441 /* add the value to a list, possibly making a new list.
442 * this will be passed to the layer when we read an ~EndLayer */
444 switch ( params[i].type )
446 case VIK_LAYER_PARAM_DOUBLE: x.d = strtod(line, NULL); break;
447 case VIK_LAYER_PARAM_UINT: x.u = strtoul(line, NULL, 10); break;
448 case VIK_LAYER_PARAM_INT: x.i = strtol(line, NULL, 10); break;
449 case VIK_LAYER_PARAM_BOOLEAN: x.b = TEST_BOOLEAN(line); break;
450 case VIK_LAYER_PARAM_COLOR: memset(&(x.c), 0, sizeof(x.c)); /* default: black */
451 gdk_color_parse ( line, &(x.c) ); break;
452 /* STRING or STRING_LIST -- if STRING_LIST, just set param to add a STRING */
455 vik_layer_set_param ( VIK_LAYER(stack->data), i, x, vp );
461 g_warning ( "Line %ld: Unknown parameter. Line:\n%s", line_num, line );
464 g_warning ( "Line %ld: Invalid parameter or parameter outside of layer.", line_num );
477 if ( stack->under && stack->under->data && stack->data )
479 vik_aggregate_layer_add_layer ( VIK_AGGREGATE_LAYER(stack->under->data), VIK_LAYER(stack->data) );
480 vik_layer_post_read ( VIK_LAYER(stack->data), vp );
485 if ( ll.lat != 0.0 || ll.lon != 0.0 )
486 vik_viewport_set_center_latlon ( VIK_VIEWPORT(vp), &ll );
488 if ( ( ! VIK_LAYER(top)->visible ) && VIK_LAYER(top)->realized )
489 vik_treeview_item_set_visible ( VIK_LAYER(top)->vt, &(VIK_LAYER(top)->iter), FALSE );
491 /* delete anything we've forgotten about -- should only happen when file ends before an EndLayer */
492 g_hash_table_foreach ( string_lists, string_list_delete, NULL );
493 g_hash_table_destroy ( string_lists );
500 new default layer of type (str_to_type) (check interface->name)
502 VikLayer *vl = stack->data;
504 vik_aggregate_layer_add_layer(stack->data, vl);
506 vik_layer_data ( VIK_LAYER_DATA(stack->data), f, vp );
510 /* ---------------------------------------------------- */
512 static FILE *xfopen ( const char *fn, const char *mode )
514 if ( strcmp(fn,"-") == 0 )
517 return fopen(fn, "r");
520 static void xfclose ( FILE *f )
522 if ( f != stdin && f != stdout )
526 /* 0 on failure, 1 on success (vik file) 2 on success (other file) */
527 gshort a_file_load ( VikAggregateLayer *top, gpointer vp, const gchar *filename )
529 FILE *f = xfopen ( filename, "r" );
536 if ( check_magic ( f, VIK_MAGIC ) )
538 file_read ( top, f, vp );
546 VikLayer *vtl = vik_layer_create ( VIK_LAYER_TRW, vp, NULL, FALSE );
547 vik_layer_rename ( vtl, a_file_basename ( filename ) );
549 if ( check_magic ( f, GPX_MAGIC ) )
550 a_gpx_read_file ( VIK_TRW_LAYER(vtl), f );
552 a_gpspoint_read_file ( VIK_TRW_LAYER(vtl), f );
554 vik_layer_post_read ( vtl, vp );
556 vik_aggregate_layer_add_layer ( top, vtl );
558 if ( vik_trw_layer_find_center ( VIK_TRW_LAYER(vtl), &new_center ) )
559 vik_viewport_set_center_coord ( VIK_VIEWPORT(vp), &new_center );
565 gboolean a_file_save ( VikAggregateLayer *top, gpointer vp, const gchar *filename )
567 FILE *f = fopen(filename, "w");
572 file_write ( top, f, vp );
580 const gchar *a_file_basename ( const gchar *filename )
582 const gchar *t = filename + strlen(filename) - 1;
583 while ( --t > filename )
584 if ( *(t-1) == FILE_SEP )
591 gboolean a_file_export ( VikTrwLayer *vtl, const gchar *filename, gshort file_type )
593 FILE *f = fopen ( filename, "w" );
596 if ( file_type == FILE_TYPE_GPSMAPPER )
597 a_gpsmapper_write_file ( vtl, f );
598 else if ( file_type == FILE_TYPE_GPX )
599 a_gpx_write_file ( vtl, f );
601 a_gpspoint_write_file ( vtl, f );
608 const gchar *a_get_viking_dir()
610 static gchar *viking_dir = NULL;
613 static gchar temp[] = {"/tmp/vikXXXXXX"};
614 gchar *home = getenv("HOME");
615 if (!home || access(home, W_OK))
616 home = mkdtemp(temp);
617 viking_dir = g_strdup_printf("%s/%s", home, ".viking");
618 if (access(viking_dir, F_OK))
619 g_mkdir(viking_dir, 0755);