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
32 #include <glib/gstdio.h>
34 #define TEST_BOOLEAN(str) (! ((str)[0] == '\0' || (str)[0] == '0' || (str)[0] == 'n' || (str)[0] == 'N' || (str)[0] == 'f' || (str)[0] == 'F') )
35 #define VIK_MAGIC "#VIK"
36 #define GPX_MAGIC "<?xm"
37 #define VIK_MAGIC_LEN 4
45 typedef struct _Stack Stack;
52 static void pop(Stack **stack) {
53 Stack *tmp = (*stack)->under;
58 static void push(Stack **stack)
60 Stack *tmp = g_malloc ( sizeof ( Stack ) );
65 static gboolean check_magic ( FILE *f, const gchar *magic_number )
67 gchar magic[VIK_MAGIC_LEN];
70 if ( fread(magic, 1, sizeof(magic), f) == sizeof(magic) &&
71 strncmp(magic, magic_number, sizeof(magic)) == 0 )
73 for ( i = sizeof(magic)-1; i >= 0; i-- ) /* the ol' pushback */
79 static gboolean str_starts_with ( const gchar *haystack, const gchar *needle, guint16 len_needle, gboolean must_be_longer )
81 if ( strlen(haystack) > len_needle - (!must_be_longer) && strncasecmp ( haystack, needle, len_needle ) == 0 )
86 static guint16 layer_type_from_string ( const gchar *str )
89 for ( i = 0; i < VIK_LAYER_NUM_TYPES; i++ )
90 if ( strcasecmp ( str, vik_layer_get_interface(i)->name ) == 0 )
95 static void write_layer_params_and_data ( VikLayer *l, FILE *f )
97 VikLayerParam *params = vik_layer_get_interface(l->type)->params;
98 VikLayerFuncGetParam get_param = vik_layer_get_interface(l->type)->get_param;
100 fprintf ( f, "name=%s\n", l->name ? l->name : "" );
102 fprintf ( f, "visible=f\n" );
104 if ( params && get_param )
106 VikLayerParamData data;
107 guint16 i, params_count = vik_layer_get_interface(l->type)->params_count;
108 for ( i = 0; i < params_count; i++ )
110 data = get_param(l,i);
112 /* string lists are handled differently. We get a GList (that shouldn't
113 * be freed) back for get_param and if it is null we shouldn't write
114 * anything at all (otherwise we'd read in a list with an empty string,
115 * not an empty string list.
117 if ( params[i].type == VIK_LAYER_PARAM_STRING_LIST ) {
119 GList *iter = (GList *)data.sl;
121 fprintf ( f, "%s=", params[i].name );
122 fprintf ( f, "%s\n", (gchar *)(iter->data) );
127 fprintf ( f, "%s=", params[i].name );
128 switch ( params[i].type )
130 case VIK_LAYER_PARAM_DOUBLE: {
131 // char buf[15]; /* locale independent */
132 // fprintf ( f, "%s\n", (char *) g_dtostr (data.d, buf, sizeof (buf)) ); break;
133 fprintf ( f, "%f\n", data.d );
136 case VIK_LAYER_PARAM_UINT: fprintf ( f, "%d\n", data.u ); break;
137 case VIK_LAYER_PARAM_INT: fprintf ( f, "%d\n", data.i ); break;
138 case VIK_LAYER_PARAM_BOOLEAN: fprintf ( f, "%c\n", data.b ? 't' : 'f' ); break;
139 case VIK_LAYER_PARAM_STRING: fprintf ( f, "%s\n", data.s ); break;
140 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;
145 if ( vik_layer_get_interface(l->type)->write_file_data )
147 fprintf ( f, "\n\n~LayerData\n" );
148 vik_layer_get_interface(l->type)->write_file_data ( l, f );
149 fprintf ( f, "~EndLayerData\n" );
152 write param, and get_value, etc.
153 then run layer data, and that's it.
157 static void file_write ( VikAggregateLayer *top, FILE *f, gpointer vp )
160 VikLayer *current_layer;
165 stack->data = (gpointer) vik_aggregate_layer_get_children(VIK_AGGREGATE_LAYER(top));
169 vik_coord_to_latlon ( vik_viewport_get_center ( VIK_VIEWPORT(vp) ), &ll );
171 switch ( vik_viewport_get_drawmode ( VIK_VIEWPORT(vp) ) ) {
172 case VIK_VIEWPORT_DRAWMODE_UTM: modestring = "utm"; break;
173 case VIK_VIEWPORT_DRAWMODE_EXPEDIA: modestring = "expedia"; break;
174 case VIK_VIEWPORT_DRAWMODE_GOOGLE: modestring = "google"; break;
175 case VIK_VIEWPORT_DRAWMODE_KH: modestring = "kh"; break;
176 default: modestring = "mercator";
179 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",
180 vik_viewport_get_xmpp ( VIK_VIEWPORT(vp) ), vik_viewport_get_ympp ( VIK_VIEWPORT(vp) ), ll.lat, ll.lon,
181 modestring, vik_viewport_get_background_color(VIK_VIEWPORT(vp)),
182 vik_viewport_get_draw_scale(VIK_VIEWPORT(vp)) ? "t" : "f",
183 vik_viewport_get_draw_centermark(VIK_VIEWPORT(vp)) ? "t" : "f" );
185 if ( ! VIK_LAYER(top)->visible )
186 fprintf ( f, "visible=f\n" );
188 while (stack && stack->data)
190 current_layer = VIK_LAYER(((GList *)stack->data)->data);
191 fprintf ( f, "\n~Layer %s\n", vik_layer_get_interface(current_layer->type)->name );
192 write_layer_params_and_data ( current_layer, f );
193 if ( current_layer->type == VIK_LAYER_AGGREGATE && !vik_aggregate_layer_is_empty(VIK_AGGREGATE_LAYER(current_layer)) )
196 stack->data = (gpointer) vik_aggregate_layer_get_children(VIK_AGGREGATE_LAYER(current_layer));
198 else if ( current_layer->type == VIK_LAYER_GPS && !vik_gps_layer_is_empty(VIK_GPS_LAYER(current_layer)) )
201 stack->data = (gpointer) vik_gps_layer_get_children(VIK_GPS_LAYER(current_layer));
205 stack->data = (gpointer) ((GList *)stack->data)->next;
206 fprintf ( f, "~EndLayer\n\n" );
207 while ( stack && (!stack->data) )
212 stack->data = (gpointer) ((GList *)stack->data)->next;
213 fprintf ( f, "~EndLayer\n\n" );
219 get vikaggregatelayer's children (?)
220 foreach write ALL params,
221 then layer data (IF function exists)
225 stack of layers (LIST) we are working on
226 when layer->next == NULL ...
231 static void string_list_delete ( gpointer key, gpointer l, gpointer user_data )
233 GList *iter = (GList *) iter;
235 g_free ( iter->data );
238 g_list_free ( (GList *) iter );
241 static void string_list_set_param (gint i, GList *list, gpointer *layer_and_vp)
245 vik_layer_set_param ( VIK_LAYER(layer_and_vp[0]), i, x, layer_and_vp[1] );
248 static void file_read ( VikAggregateLayer *top, FILE *f, VikViewport *vp )
251 struct LatLon ll = { 0.0, 0.0 };
257 VikLayerParam *params = NULL; /* for current layer, so we don't have to keep on looking up interface */
258 guint8 params_count = 0;
260 GHashTable *string_lists = g_hash_table_new(g_direct_hash,g_direct_equal);
264 stack->data = (gpointer) top;
266 while ( fgets ( buffer, 4096, f ) )
271 while ( *line == ' ' || *line =='\t' )
274 if ( line[0] == '#' )
279 if ( len > 0 && line[len-1] == '\n' )
281 if ( len > 0 && line[len-1] == '\r' )
288 if ( line[0] == '~' )
293 else if ( str_starts_with ( line, "Layer ", 6, TRUE ) )
295 int parent_type = VIK_LAYER(stack->data)->type;
296 if ( ( ! stack->data ) || ((parent_type != VIK_LAYER_AGGREGATE) && (parent_type != VIK_LAYER_GPS)) )
298 g_warning ( "Line %ld: Layer command inside non-Aggregate Layer (type %d)", line_num, parent_type );
299 push(&stack); /* inside INVALID layer */
305 gint16 type = layer_type_from_string ( line+6 );
309 g_warning ( "Line %ld: Unknown type %s\n", line_num, line+6 );
312 else if (parent_type == VIK_LAYER_GPS)
314 stack->data = (gpointer) vik_gps_layer_get_a_child(VIK_GPS_LAYER(stack->under->data));
315 params = vik_layer_get_interface(type)->params;
316 params_count = vik_layer_get_interface(type)->params_count;
320 stack->data = (gpointer) vik_layer_create ( type, vp, NULL, FALSE );
321 params = vik_layer_get_interface(type)->params;
322 params_count = vik_layer_get_interface(type)->params_count;
326 else if ( str_starts_with ( line, "EndLayer", 8, FALSE ) )
328 if ( stack->under == NULL )
329 g_warning ( "Line %ld: Mismatched ~EndLayer command", line_num );
332 /* add any string lists we've accumulated */
333 gpointer layer_and_vp[2];
334 layer_and_vp[0] = stack->data;
335 layer_and_vp[1] = vp;
336 g_hash_table_foreach ( string_lists, (GHFunc) string_list_set_param, layer_and_vp );
337 g_hash_table_remove_all ( string_lists );
339 if ( stack->data && stack->under->data )
341 if (VIK_LAYER(stack->under->data)->type == VIK_LAYER_AGGREGATE) {
342 vik_aggregate_layer_add_layer ( VIK_AGGREGATE_LAYER(stack->under->data), VIK_LAYER(stack->data) );
343 vik_layer_post_read ( VIK_LAYER(stack->data), vp, TRUE );
345 else if (VIK_LAYER(stack->under->data)->type == VIK_LAYER_GPS) {
346 /* TODO: anything else needs to be done here ? */
349 g_warning ( "Line %ld: EndLayer command inside non-Aggregate Layer (type %d)", line_num, VIK_LAYER(stack->data)->type );
354 else if ( str_starts_with ( line, "LayerData", 9, FALSE ) )
356 if ( stack->data && vik_layer_get_interface(VIK_LAYER(stack->data)->type)->read_file_data )
357 vik_layer_get_interface(VIK_LAYER(stack->data)->type)->read_file_data ( VIK_LAYER(stack->data), f );
358 /* must read until hits ~EndLayerData */
361 { /* simply skip layer data over */
362 while ( fgets ( buffer, 4096, f ) )
369 if ( len > 0 && line[len-1] == '\n' )
371 if ( len > 0 && line[len-1] == '\r' )
373 if ( strcasecmp ( line, "~EndLayerData" ) == 0 )
381 g_warning ( "Line %ld: Unknown tilde command", line_num );
391 for ( i = 0; i < len; i++ )
392 if ( line[i] == '=' )
395 if ( stack->under == NULL && eq_pos == 4 && strncasecmp ( line, "xmpp", eq_pos ) == 0) /* "hard coded" params: global & for all layer-types */
396 vik_viewport_set_xmpp ( VIK_VIEWPORT(vp), strtod ( line+5, NULL ) );
397 else if ( stack->under == NULL && eq_pos == 4 && strncasecmp ( line, "ympp", eq_pos ) == 0)
398 vik_viewport_set_ympp ( VIK_VIEWPORT(vp), strtod ( line+5, NULL ) );
399 else if ( stack->under == NULL && eq_pos == 3 && strncasecmp ( line, "lat", eq_pos ) == 0 )
400 ll.lat = strtod ( line+4, NULL );
401 else if ( stack->under == NULL && eq_pos == 3 && strncasecmp ( line, "lon", eq_pos ) == 0 )
402 ll.lon = strtod ( line+4, NULL );
403 else if ( stack->under == NULL && eq_pos == 4 && strncasecmp ( line, "mode", eq_pos ) == 0 && strcasecmp ( line+5, "utm" ) == 0)
404 vik_viewport_set_drawmode ( VIK_VIEWPORT(vp), VIK_VIEWPORT_DRAWMODE_UTM);
405 else if ( stack->under == NULL && eq_pos == 4 && strncasecmp ( line, "mode", eq_pos ) == 0 && strcasecmp ( line+5, "expedia" ) == 0)
406 vik_viewport_set_drawmode ( VIK_VIEWPORT(vp), VIK_VIEWPORT_DRAWMODE_EXPEDIA );
407 else if ( stack->under == NULL && eq_pos == 4 && strncasecmp ( line, "mode", eq_pos ) == 0 && strcasecmp ( line+5, "google" ) == 0)
408 vik_viewport_set_drawmode ( VIK_VIEWPORT(vp), VIK_VIEWPORT_DRAWMODE_GOOGLE );
409 else if ( stack->under == NULL && eq_pos == 4 && strncasecmp ( line, "mode", eq_pos ) == 0 && strcasecmp ( line+5, "kh" ) == 0)
410 vik_viewport_set_drawmode ( VIK_VIEWPORT(vp), VIK_VIEWPORT_DRAWMODE_KH );
411 else if ( stack->under == NULL && eq_pos == 4 && strncasecmp ( line, "mode", eq_pos ) == 0 && strcasecmp ( line+5, "mercator" ) == 0)
412 vik_viewport_set_drawmode ( VIK_VIEWPORT(vp), VIK_VIEWPORT_DRAWMODE_MERCATOR );
413 else if ( stack->under == NULL && eq_pos == 5 && strncasecmp ( line, "color", eq_pos ) == 0 )
414 vik_viewport_set_background_color ( VIK_VIEWPORT(vp), line+6 );
415 else if ( stack->under == NULL && eq_pos == 9 && strncasecmp ( line, "drawscale", eq_pos ) == 0 )
416 vik_viewport_set_draw_scale ( VIK_VIEWPORT(vp), TEST_BOOLEAN(line+10) );
417 else if ( stack->under == NULL && eq_pos == 14 && strncasecmp ( line, "drawcentermark", eq_pos ) == 0 )
418 vik_viewport_set_draw_centermark ( VIK_VIEWPORT(vp), TEST_BOOLEAN(line+15) );
419 else if ( stack->under && eq_pos == 4 && strncasecmp ( line, "name", eq_pos ) == 0 )
420 vik_layer_rename ( VIK_LAYER(stack->data), line+5 );
421 else if ( eq_pos == 7 && strncasecmp ( line, "visible", eq_pos ) == 0 )
422 VIK_LAYER(stack->data)->visible = TEST_BOOLEAN(line+8);
423 else if ( eq_pos != -1 && stack->under )
425 gboolean found_match = FALSE;
427 /* go thru layer params. if len == eq_pos && starts_with jazz, set it. */
428 /* also got to check for name and visible. */
432 g_warning ( "Line %ld: No options for this kind of layer", line_num );
436 for ( i = 0; i < params_count; i++ )
437 if ( strlen(params[i].name) == eq_pos && strncasecmp ( line, params[i].name, eq_pos ) == 0 )
441 if ( params[i].type == VIK_LAYER_PARAM_STRING_LIST ) {
442 GList *l = g_list_append ( g_hash_table_lookup ( string_lists, (gpointer) ((gint) i) ), g_strdup(line) );
443 g_hash_table_replace ( string_lists, (gpointer) ((gint)i), l );
444 /* add the value to a list, possibly making a new list.
445 * this will be passed to the layer when we read an ~EndLayer */
447 switch ( params[i].type )
449 case VIK_LAYER_PARAM_DOUBLE: x.d = strtod(line, NULL); break;
450 case VIK_LAYER_PARAM_UINT: x.u = strtoul(line, NULL, 10); break;
451 case VIK_LAYER_PARAM_INT: x.i = strtol(line, NULL, 10); break;
452 case VIK_LAYER_PARAM_BOOLEAN: x.b = TEST_BOOLEAN(line); break;
453 case VIK_LAYER_PARAM_COLOR: memset(&(x.c), 0, sizeof(x.c)); /* default: black */
454 gdk_color_parse ( line, &(x.c) ); break;
455 /* STRING or STRING_LIST -- if STRING_LIST, just set param to add a STRING */
458 vik_layer_set_param ( VIK_LAYER(stack->data), i, x, vp );
464 g_warning ( "Line %ld: Unknown parameter. Line:\n%s", line_num, line );
467 g_warning ( "Line %ld: Invalid parameter or parameter outside of layer.", line_num );
480 if ( stack->under && stack->under->data && stack->data )
482 vik_aggregate_layer_add_layer ( VIK_AGGREGATE_LAYER(stack->under->data), VIK_LAYER(stack->data) );
483 vik_layer_post_read ( VIK_LAYER(stack->data), vp, TRUE );
488 if ( ll.lat != 0.0 || ll.lon != 0.0 )
489 vik_viewport_set_center_latlon ( VIK_VIEWPORT(vp), &ll );
491 if ( ( ! VIK_LAYER(top)->visible ) && VIK_LAYER(top)->realized )
492 vik_treeview_item_set_visible ( VIK_LAYER(top)->vt, &(VIK_LAYER(top)->iter), FALSE );
494 /* delete anything we've forgotten about -- should only happen when file ends before an EndLayer */
495 g_hash_table_foreach ( string_lists, string_list_delete, NULL );
496 g_hash_table_destroy ( string_lists );
503 new default layer of type (str_to_type) (check interface->name)
505 VikLayer *vl = stack->data;
507 vik_aggregate_layer_add_layer(stack->data, vl);
509 vik_layer_data ( VIK_LAYER_DATA(stack->data), f, vp );
513 /* ---------------------------------------------------- */
515 static FILE *xfopen ( const char *fn, const char *mode )
517 if ( strcmp(fn,"-") == 0 )
520 return fopen(fn, "r");
523 static void xfclose ( FILE *f )
525 if ( f != stdin && f != stdout )
529 /* 0 on failure, 1 on success (vik file) 2 on success (other file) */
530 gshort a_file_load ( VikAggregateLayer *top, VikViewport *vp, const gchar *filename )
532 FILE *f = xfopen ( filename, "r" );
539 if ( check_magic ( f, VIK_MAGIC ) )
541 file_read ( top, f, vp );
549 VikLayer *vtl = vik_layer_create ( VIK_LAYER_TRW, vp, NULL, FALSE );
550 vik_layer_rename ( vtl, a_file_basename ( filename ) );
552 if ( check_magic ( f, GPX_MAGIC ) )
553 a_gpx_read_file ( VIK_TRW_LAYER(vtl), f );
555 a_gpspoint_read_file ( VIK_TRW_LAYER(vtl), f );
557 vik_layer_post_read ( vtl, vp, TRUE );
559 vik_aggregate_layer_add_layer ( top, vtl );
561 if ( vik_trw_layer_find_center ( VIK_TRW_LAYER(vtl), &new_center ) )
562 vik_viewport_set_center_coord ( VIK_VIEWPORT(vp), &new_center );
568 gboolean a_file_save ( VikAggregateLayer *top, gpointer vp, const gchar *filename )
570 FILE *f = fopen(filename, "w");
575 file_write ( top, f, vp );
583 const gchar *a_file_basename ( const gchar *filename )
585 const gchar *t = filename + strlen(filename) - 1;
586 while ( --t > filename )
587 if ( *(t-1) == FILE_SEP )
594 gboolean a_file_export ( VikTrwLayer *vtl, const gchar *filename, gshort file_type )
596 FILE *f = fopen ( filename, "w" );
599 if ( file_type == FILE_TYPE_GPSMAPPER )
600 a_gpsmapper_write_file ( vtl, f );
601 else if ( file_type == FILE_TYPE_GPX )
602 a_gpx_write_file ( vtl, f );
604 a_gpspoint_write_file ( vtl, f );
611 const gchar *a_get_viking_dir()
613 static gchar *viking_dir = NULL;
616 const gchar *home = g_getenv("HOME");
617 if (!home || access(home, W_OK))
618 home = g_get_home_dir ();
620 if (!home || access(home, W_OK))
622 static gchar temp[] = {"/tmp/vikXXXXXX"};
623 home = mkdtemp(temp);
626 if (!home || access(home, W_OK))
628 g_critical("Unable to find a base directory");
630 /* Build the name of the directory */
631 viking_dir = g_build_filename(home, ".viking", NULL);
632 if (access(viking_dir, F_OK))
633 g_mkdir(viking_dir, 0755);