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 #define TEST_BOOLEAN(str) (! ((str)[0] == '\0' || (str)[0] == '0' || (str)[0] == 'n' || (str)[0] == 'N' || (str)[0] == 'f' || (str)[0] == 'F') )
30 #define VIK_MAGIC "#VIK"
31 #define GPX_MAGIC "<?xm"
32 #define VIK_MAGIC_LEN 4
40 typedef struct _Stack Stack;
47 static void pop(Stack **stack) {
48 Stack *tmp = (*stack)->under;
53 static void push(Stack **stack)
55 Stack *tmp = g_malloc ( sizeof ( Stack ) );
60 static gboolean check_magic ( FILE *f, const gchar *magic_number )
62 gchar magic[VIK_MAGIC_LEN];
65 if ( fread(magic, 1, sizeof(magic), f) == sizeof(magic) &&
66 strncmp(magic, magic_number, sizeof(magic)) == 0 )
68 for ( i = sizeof(magic)-1; i >= 0; i-- ) /* the ol' pushback */
74 static gboolean str_starts_with ( const gchar *haystack, const gchar *needle, guint16 len_needle, gboolean must_be_longer )
76 if ( strlen(haystack) > len_needle - (!must_be_longer) && strncasecmp ( haystack, needle, len_needle ) == 0 )
81 static guint16 layer_type_from_string ( const gchar *str )
84 for ( i = 0; i < VIK_LAYER_NUM_TYPES; i++ )
85 if ( strcasecmp ( str, vik_layer_get_interface(i)->name ) == 0 )
90 static void write_layer_params_and_data ( VikLayer *l, FILE *f )
92 VikLayerParam *params = vik_layer_get_interface(l->type)->params;
93 VikLayerFuncGetParam get_param = vik_layer_get_interface(l->type)->get_param;
95 fprintf ( f, "name=%s\n", l->name ? l->name : "" );
97 fprintf ( f, "visible=f\n" );
99 if ( params && get_param )
101 VikLayerParamData data;
102 guint16 i, params_count = vik_layer_get_interface(l->type)->params_count;
103 for ( i = 0; i < params_count; i++ )
105 data = get_param(l,i);
106 fprintf ( f, "%s=", params[i].name );
107 switch ( params[i].type )
109 case VIK_LAYER_PARAM_DOUBLE: fprintf ( f, "%f\n", data.d ); break;
110 case VIK_LAYER_PARAM_UINT: fprintf ( f, "%d\n", data.u ); break;
111 case VIK_LAYER_PARAM_INT: fprintf ( f, "%d\n", data.i ); break;
112 case VIK_LAYER_PARAM_BOOLEAN: fprintf ( f, "%c\n", data.b ? 't' : 'f' ); break;
113 case VIK_LAYER_PARAM_STRING: fprintf ( f, "%s\n", data.s ); break;
114 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;
118 if ( vik_layer_get_interface(l->type)->write_file_data )
120 fprintf ( f, "\n\n~LayerData\n" );
121 vik_layer_get_interface(l->type)->write_file_data ( l, f );
122 fprintf ( f, "~EndLayerData\n" );
125 write param, and get_value, etc.
126 then run layer data, and that's it.
130 static void file_write ( VikAggregateLayer *top, FILE *f, gpointer vp )
133 VikLayer *current_layer;
138 stack->data = (gpointer) vik_aggregate_layer_get_children(VIK_AGGREGATE_LAYER(top));
142 vik_coord_to_latlon ( vik_viewport_get_center ( VIK_VIEWPORT(vp) ), &ll );
144 switch ( vik_viewport_get_drawmode ( VIK_VIEWPORT(vp) ) ) {
145 case VIK_VIEWPORT_DRAWMODE_UTM: modestring = "utm"; break;
146 case VIK_VIEWPORT_DRAWMODE_EXPEDIA: modestring = "expedia"; break;
147 case VIK_VIEWPORT_DRAWMODE_GOOGLE: modestring = "google"; break;
148 case VIK_VIEWPORT_DRAWMODE_KH: modestring = "kh"; break;
149 default: modestring = "mercator";
152 fprintf ( f, "#VIKING GPS Data file http://gpsmaps.org/viking/\n\nxmpp=%f\nympp=%f\nlat=%f\nlon=%f\nmode=%s\ncolor=%s\n",
153 vik_viewport_get_xmpp ( VIK_VIEWPORT(vp) ), vik_viewport_get_ympp ( VIK_VIEWPORT(vp) ), ll.lat, ll.lon,
154 modestring, vik_viewport_get_background_color(VIK_VIEWPORT(vp)) );
156 if ( ! VIK_LAYER(top)->visible )
157 fprintf ( f, "visible=f\n" );
159 while (stack && stack->data)
161 current_layer = VIK_LAYER(((GList *)stack->data)->data);
162 fprintf ( f, "\n~Layer %s\n", vik_layer_get_interface(current_layer->type)->name );
163 write_layer_params_and_data ( current_layer, f );
164 if ( current_layer->type == VIK_LAYER_AGGREGATE && !vik_aggregate_layer_is_empty(VIK_AGGREGATE_LAYER(current_layer)) )
167 stack->data = (gpointer) vik_aggregate_layer_get_children(VIK_AGGREGATE_LAYER(current_layer));
171 stack->data = (gpointer) ((GList *)stack->data)->next;
172 fprintf ( f, "~EndLayer\n\n" );
173 while ( stack && (!stack->data) )
178 stack->data = (gpointer) ((GList *)stack->data)->next;
179 fprintf ( f, "~EndLayer\n\n" );
185 get vikaggregatelayer's children (?)
186 foreach write ALL params,
187 then layer data (IF function exists)
191 stack of layers (LIST) we are working on
192 when layer->next == NULL ...
197 static void file_read ( VikAggregateLayer *top, FILE *f, gpointer vp )
200 struct LatLon ll = { 0.0, 0.0 };
206 VikLayerParam *params; /* for current layer, so we don't have to keep on looking up interface */
211 stack->data = (gpointer) top;
213 while ( fgets ( buffer, 4096, f ) )
218 while ( *line == ' ' || *line =='\t' )
221 if ( line[0] == '#' )
226 if ( len > 0 && line[len-1] == '\n' )
228 if ( len > 0 && line[len-1] == '\r' )
235 if ( line[0] == '~' )
240 else if ( str_starts_with ( line, "Layer ", 6, TRUE ) )
242 if ( ( ! stack->data ) || VIK_LAYER(stack->data)->type != VIK_LAYER_AGGREGATE )
244 g_warning ( "Line %ld: Layer command inside non-Aggregate Layer", line_num );
245 push(&stack); /* inside INVALID layer */
251 gint16 type = layer_type_from_string ( line+6 );
255 g_warning ( "Line %ld: Unknown type %s\n", line_num, line+6 );
260 stack->data = (gpointer) vik_layer_create ( type, vp, NULL, FALSE );
261 params = vik_layer_get_interface(type)->params;
262 params_count = vik_layer_get_interface(type)->params_count;
266 else if ( str_starts_with ( line, "EndLayer", 8, FALSE ) )
268 if ( stack->under == NULL )
269 g_warning ( "Line %ld: Mismatched ~EndLayer command", line_num );
272 if ( stack->data && stack->under->data )
274 vik_aggregate_layer_add_layer ( VIK_AGGREGATE_LAYER(stack->under->data), VIK_LAYER(stack->data) );
275 vik_layer_post_read ( VIK_LAYER(stack->data), vp );
280 else if ( str_starts_with ( line, "LayerData", 9, FALSE ) )
282 if ( stack->data && vik_layer_get_interface(VIK_LAYER(stack->data)->type)->read_file_data )
283 vik_layer_get_interface(VIK_LAYER(stack->data)->type)->read_file_data ( VIK_LAYER(stack->data), f );
284 /* must read until hits ~EndLayerData */
287 { /* simply skip layer data over */
288 while ( fgets ( buffer, 4096, f ) )
295 if ( len > 0 && line[len-1] == '\n' )
297 if ( len > 0 && line[len-1] == '\r' )
299 if ( strcasecmp ( line, "~EndLayerData" ) == 0 )
307 g_warning ( "Line %ld: Unknown tilde command", line_num );
317 for ( i = 0; i < len; i++ )
318 if ( line[i] == '=' )
321 if ( stack->under == NULL && eq_pos == 4 && strncasecmp ( line, "xmpp", eq_pos ) == 0) /* "hard coded" params: global & for all layer-types */
322 vik_viewport_set_xmpp ( VIK_VIEWPORT(vp), strtod ( line+5, NULL ) );
323 else if ( stack->under == NULL && eq_pos == 4 && strncasecmp ( line, "ympp", eq_pos ) == 0)
324 vik_viewport_set_ympp ( VIK_VIEWPORT(vp), strtod ( line+5, NULL ) );
325 else if ( stack->under == NULL && eq_pos == 3 && strncasecmp ( line, "lat", eq_pos ) == 0 )
326 ll.lat = strtod ( line+4, NULL );
327 else if ( stack->under == NULL && eq_pos == 3 && strncasecmp ( line, "lon", eq_pos ) == 0 )
328 ll.lon = strtod ( line+4, NULL );
329 else if ( stack->under == NULL && eq_pos == 4 && strncasecmp ( line, "mode", eq_pos ) == 0 && strcasecmp ( line+5, "utm" ) == 0)
330 vik_viewport_set_drawmode ( VIK_VIEWPORT(vp), VIK_VIEWPORT_DRAWMODE_UTM);
331 else if ( stack->under == NULL && eq_pos == 4 && strncasecmp ( line, "mode", eq_pos ) == 0 && strcasecmp ( line+5, "expedia" ) == 0)
332 vik_viewport_set_drawmode ( VIK_VIEWPORT(vp), VIK_VIEWPORT_DRAWMODE_EXPEDIA );
333 else if ( stack->under == NULL && eq_pos == 4 && strncasecmp ( line, "mode", eq_pos ) == 0 && strcasecmp ( line+5, "google" ) == 0)
334 vik_viewport_set_drawmode ( VIK_VIEWPORT(vp), VIK_VIEWPORT_DRAWMODE_GOOGLE );
335 else if ( stack->under == NULL && eq_pos == 4 && strncasecmp ( line, "mode", eq_pos ) == 0 && strcasecmp ( line+5, "kh" ) == 0)
336 vik_viewport_set_drawmode ( VIK_VIEWPORT(vp), VIK_VIEWPORT_DRAWMODE_KH );
337 else if ( stack->under == NULL && eq_pos == 4 && strncasecmp ( line, "mode", eq_pos ) == 0 && strcasecmp ( line+5, "mercator" ) == 0)
338 vik_viewport_set_drawmode ( VIK_VIEWPORT(vp), VIK_VIEWPORT_DRAWMODE_MERCATOR );
339 else if ( stack->under == NULL && eq_pos == 5 && strncasecmp ( line, "color", eq_pos ) == 0 )
340 vik_viewport_set_background_color ( VIK_VIEWPORT(vp), line+6 );
341 else if ( stack->under && eq_pos == 4 && strncasecmp ( line, "name", eq_pos ) == 0 )
342 vik_layer_rename ( VIK_LAYER(stack->data), line+5 );
343 else if ( eq_pos == 7 && strncasecmp ( line, "visible", eq_pos ) == 0 )
344 VIK_LAYER(stack->data)->visible = TEST_BOOLEAN(line+8);
345 else if ( eq_pos != -1 && stack->under )
347 gboolean found_match = FALSE;
348 /* go thru layer params. if len == eq_pos && starts_with jazz, set it. */
349 /* also got to check for name and visible. */
353 g_warning ( "Line %ld: No options for this kind of layer", line_num );
357 for ( i = 0; i < params_count; i++ )
358 if ( strlen(params[i].name) == eq_pos && strncasecmp ( line, params[i].name, eq_pos ) == 0 )
362 switch ( params[i].type )
364 case VIK_LAYER_PARAM_DOUBLE: x.d = strtod(line, NULL); break;
365 case VIK_LAYER_PARAM_UINT: x.u = strtoul(line, NULL, 10); break;
366 case VIK_LAYER_PARAM_INT: x.i = strtol(line, NULL, 10); break;
367 case VIK_LAYER_PARAM_BOOLEAN: x.b = TEST_BOOLEAN(line); break;
368 case VIK_LAYER_PARAM_COLOR: memset(&(x.c), 0, sizeof(x.c)); /* default: black */
369 gdk_color_parse ( line, &(x.c) ); break;
372 vik_layer_set_param ( VIK_LAYER(stack->data), i, x, vp );
377 g_warning ( "Line %ld: Unknown parameter", line_num );
380 g_warning ( "Line %ld: Invalid parameter or parameter outside of layer.", line_num );
393 if ( stack->under && stack->under->data && stack->data )
395 vik_aggregate_layer_add_layer ( VIK_AGGREGATE_LAYER(stack->under->data), VIK_LAYER(stack->data) );
396 vik_layer_post_read ( VIK_LAYER(stack->data), vp );
401 if ( ll.lat != 0.0 || ll.lon != 0.0 )
402 vik_viewport_set_center_latlon ( VIK_VIEWPORT(vp), &ll );
404 if ( ( ! VIK_LAYER(top)->visible ) && VIK_LAYER(top)->realized )
405 vik_treeview_item_set_visible ( VIK_LAYER(top)->vt, &(VIK_LAYER(top)->iter), FALSE );
412 new default layer of type (str_to_type) (check interface->name)
414 VikLayer *vl = stack->data;
416 vik_aggregate_layer_add_layer(stack->data, vl);
418 vik_layer_data ( VIK_LAYER_DATA(stack->data), f, vp );
422 /* ---------------------------------------------------- */
424 static FILE *xfopen ( const char *fn, const char *mode )
426 if ( strcmp(fn,"-") == 0 )
429 return fopen(fn, "r");
432 static void xfclose ( FILE *f )
434 if ( f != stdin && f != stdout )
438 /* 0 on failure, 1 on success (vik file) 2 on success (other file) */
439 gshort a_file_load ( VikAggregateLayer *top, gpointer vp, const gchar *filename )
441 FILE *f = xfopen ( filename, "r" );
448 if ( check_magic ( f, VIK_MAGIC ) )
450 file_read ( top, f, vp );
458 VikLayer *vtl = vik_layer_create ( VIK_LAYER_TRW, vp, NULL, FALSE );
459 vik_layer_rename ( vtl, a_file_basename ( filename ) );
461 if ( check_magic ( f, GPX_MAGIC ) )
462 a_gpx_read_file ( VIK_TRW_LAYER(vtl), f );
464 a_gpspoint_read_file ( VIK_TRW_LAYER(vtl), f );
466 vik_layer_post_read ( vtl, vp );
468 vik_aggregate_layer_add_layer ( top, vtl );
470 if ( vik_trw_layer_find_center ( VIK_TRW_LAYER(vtl), &new_center ) )
471 vik_viewport_set_center_coord ( VIK_VIEWPORT(vp), &new_center );
477 gboolean a_file_save ( VikAggregateLayer *top, gpointer vp, const gchar *filename )
479 FILE *f = fopen(filename, "w");
484 file_write ( top, f, vp );
492 const gchar *a_file_basename ( const gchar *filename )
494 const gchar *t = filename + strlen(filename) - 1;
495 while ( --t > filename )
496 if ( *(t-1) == FILE_SEP )
503 gboolean a_file_export ( VikTrwLayer *vtl, const gchar *filename, gshort file_type )
505 FILE *f = fopen ( filename, "w" );
508 if ( file_type == FILE_TYPE_GPSMAPPER )
509 a_gpsmapper_write_file ( vtl, f );
510 else if ( file_type == FILE_TYPE_GPX )
511 a_gpx_write_file ( vtl, f );
513 a_gpspoint_write_file ( vtl, f );