2 * viking -- GPS Data and Topo Analyzer, Explorer, and Manager
4 * Copyright (C) 2003-2005, Evan Battaglia <gtoevan@gmx.net>
5 * Copyright (C) 2012, Guilhem Bonnefille <guilhem.bonnefille@gmail.com>
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.
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.
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
38 #include <glib/gstdio.h>
39 #include <glib/gi18n.h>
41 #define TEST_BOOLEAN(str) (! ((str)[0] == '\0' || (str)[0] == '0' || (str)[0] == 'n' || (str)[0] == 'N' || (str)[0] == 'f' || (str)[0] == 'F') )
42 #define VIK_MAGIC "#VIK"
43 #define GPX_MAGIC "<?xm"
44 #define VIK_MAGIC_LEN 4
52 #define VIKING_FILE_VERSION 1
54 typedef struct _Stack Stack;
61 static void pop(Stack **stack) {
62 Stack *tmp = (*stack)->under;
67 static void push(Stack **stack)
69 Stack *tmp = g_malloc ( sizeof ( Stack ) );
74 static gboolean check_magic ( FILE *f, const gchar *magic_number )
76 gchar magic[VIK_MAGIC_LEN];
79 if ( fread(magic, 1, sizeof(magic), f) == sizeof(magic) &&
80 strncmp(magic, magic_number, sizeof(magic)) == 0 )
82 for ( i = sizeof(magic)-1; i >= 0; i-- ) /* the ol' pushback */
88 static gboolean str_starts_with ( const gchar *haystack, const gchar *needle, guint16 len_needle, gboolean must_be_longer )
90 if ( strlen(haystack) > len_needle - (!must_be_longer) && strncasecmp ( haystack, needle, len_needle ) == 0 )
95 static guint16 layer_type_from_string ( const gchar *str )
98 for ( i = 0; i < VIK_LAYER_NUM_TYPES; i++ )
99 if ( strcasecmp ( str, vik_layer_get_interface(i)->fixed_layer_name ) == 0 )
104 void file_write_layer_param ( FILE *f, const gchar *name, guint8 type, VikLayerParamData data ) {
105 /* string lists are handled differently. We get a GList (that shouldn't
106 * be freed) back for get_param and if it is null we shouldn't write
107 * anything at all (otherwise we'd read in a list with an empty string,
108 * not an empty string list.
110 if ( type == VIK_LAYER_PARAM_STRING_LIST ) {
112 GList *iter = (GList *)data.sl;
114 fprintf ( f, "%s=", name );
115 fprintf ( f, "%s\n", (gchar *)(iter->data) );
120 fprintf ( f, "%s=", name );
123 case VIK_LAYER_PARAM_DOUBLE: {
124 // char buf[15]; /* locale independent */
125 // fprintf ( f, "%s\n", (char *) g_dtostr (data.d, buf, sizeof (buf)) ); break;
126 fprintf ( f, "%f\n", data.d );
129 case VIK_LAYER_PARAM_UINT: fprintf ( f, "%d\n", data.u ); break;
130 case VIK_LAYER_PARAM_INT: fprintf ( f, "%d\n", data.i ); break;
131 case VIK_LAYER_PARAM_BOOLEAN: fprintf ( f, "%c\n", data.b ? 't' : 'f' ); break;
132 case VIK_LAYER_PARAM_STRING: fprintf ( f, "%s\n", data.s ); break;
133 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;
138 static void write_layer_params_and_data ( VikLayer *l, FILE *f )
140 VikLayerParam *params = vik_layer_get_interface(l->type)->params;
141 VikLayerFuncGetParam get_param = vik_layer_get_interface(l->type)->get_param;
143 fprintf ( f, "name=%s\n", l->name ? l->name : "" );
145 fprintf ( f, "visible=f\n" );
147 if ( params && get_param )
149 VikLayerParamData data;
150 guint16 i, params_count = vik_layer_get_interface(l->type)->params_count;
151 for ( i = 0; i < params_count; i++ )
153 data = get_param(l, i, TRUE);
154 file_write_layer_param(f, params[i].name, params[i].type, data);
157 if ( vik_layer_get_interface(l->type)->write_file_data )
159 fprintf ( f, "\n\n~LayerData\n" );
160 vik_layer_get_interface(l->type)->write_file_data ( l, f );
161 fprintf ( f, "~EndLayerData\n" );
164 write param, and get_value, etc.
165 then run layer data, and that's it.
169 static void file_write ( VikAggregateLayer *top, FILE *f, gpointer vp )
172 VikLayer *current_layer;
174 VikViewportDrawMode mode;
175 gchar *modestring = NULL;
178 stack->data = (gpointer) vik_aggregate_layer_get_children(VIK_AGGREGATE_LAYER(top));
182 vik_coord_to_latlon ( vik_viewport_get_center ( VIK_VIEWPORT(vp) ), &ll );
184 mode = vik_viewport_get_drawmode ( VIK_VIEWPORT(vp) );
186 case VIK_VIEWPORT_DRAWMODE_UTM: modestring = "utm"; break;
187 case VIK_VIEWPORT_DRAWMODE_EXPEDIA: modestring = "expedia"; break;
188 case VIK_VIEWPORT_DRAWMODE_MERCATOR: modestring = "mercator"; break;
189 case VIK_VIEWPORT_DRAWMODE_LATLON: modestring = "latlon"; break;
191 g_critical("Houston, we've had a problem. mode=%d", mode);
194 fprintf ( f, "#VIKING GPS Data file " VIKING_URL "\n" );
195 fprintf ( f, "FILE_VERSION=%d\n", VIKING_FILE_VERSION );
196 fprintf ( f, "\nxmpp=%f\nympp=%f\nlat=%f\nlon=%f\nmode=%s\ncolor=%s\nhighlightcolor=%s\ndrawscale=%s\ndrawcentermark=%s\ndrawhighlight=%s\n",
197 vik_viewport_get_xmpp ( VIK_VIEWPORT(vp) ), vik_viewport_get_ympp ( VIK_VIEWPORT(vp) ), ll.lat, ll.lon,
198 modestring, vik_viewport_get_background_color(VIK_VIEWPORT(vp)),
199 vik_viewport_get_highlight_color(VIK_VIEWPORT(vp)),
200 vik_viewport_get_draw_scale(VIK_VIEWPORT(vp)) ? "t" : "f",
201 vik_viewport_get_draw_centermark(VIK_VIEWPORT(vp)) ? "t" : "f",
202 vik_viewport_get_draw_highlight(VIK_VIEWPORT(vp)) ? "t" : "f" );
204 if ( ! VIK_LAYER(top)->visible )
205 fprintf ( f, "visible=f\n" );
207 while (stack && stack->data)
209 current_layer = VIK_LAYER(((GList *)stack->data)->data);
210 fprintf ( f, "\n~Layer %s\n", vik_layer_get_interface(current_layer->type)->fixed_layer_name );
211 write_layer_params_and_data ( current_layer, f );
212 if ( current_layer->type == VIK_LAYER_AGGREGATE && !vik_aggregate_layer_is_empty(VIK_AGGREGATE_LAYER(current_layer)) )
215 stack->data = (gpointer) vik_aggregate_layer_get_children(VIK_AGGREGATE_LAYER(current_layer));
217 else if ( current_layer->type == VIK_LAYER_GPS && !vik_gps_layer_is_empty(VIK_GPS_LAYER(current_layer)) )
220 stack->data = (gpointer) vik_gps_layer_get_children(VIK_GPS_LAYER(current_layer));
224 stack->data = (gpointer) ((GList *)stack->data)->next;
225 fprintf ( f, "~EndLayer\n\n" );
226 while ( stack && (!stack->data) )
231 stack->data = (gpointer) ((GList *)stack->data)->next;
232 fprintf ( f, "~EndLayer\n\n" );
238 get vikaggregatelayer's children (?)
239 foreach write ALL params,
240 then layer data (IF function exists)
244 stack of layers (LIST) we are working on
245 when layer->next == NULL ...
250 static void string_list_delete ( gpointer key, gpointer l, gpointer user_data )
252 /* 20071021 bugfix */
253 GList *iter = (GList *) l;
255 g_free ( iter->data );
258 g_list_free ( (GList *) l );
261 static void string_list_set_param (gint i, GList *list, gpointer *layer_and_vp)
265 vik_layer_set_param ( VIK_LAYER(layer_and_vp[0]), i, x, layer_and_vp[1], TRUE );
269 * Read in a Viking file and return how successful the parsing was
270 * ATM this will always work, in that even if there are parsing problems
271 * then there will be no new values to override the defaults
273 * TODO flow up line number(s) / error messages of problems encountered...
276 static gboolean file_read ( VikAggregateLayer *top, FILE *f, VikViewport *vp )
279 struct LatLon ll = { 0.0, 0.0 };
285 VikLayerParam *params = NULL; /* for current layer, so we don't have to keep on looking up interface */
286 guint8 params_count = 0;
288 GHashTable *string_lists = g_hash_table_new(g_direct_hash,g_direct_equal);
290 gboolean successful_read = TRUE;
294 stack->data = (gpointer) top;
296 while ( fgets ( buffer, 4096, f ) )
301 while ( *line == ' ' || *line =='\t' )
304 if ( line[0] == '#' )
309 if ( len > 0 && line[len-1] == '\n' )
311 if ( len > 0 && line[len-1] == '\r' )
318 if ( line[0] == '~' )
323 else if ( str_starts_with ( line, "Layer ", 6, TRUE ) )
325 int parent_type = VIK_LAYER(stack->data)->type;
326 if ( ( ! stack->data ) || ((parent_type != VIK_LAYER_AGGREGATE) && (parent_type != VIK_LAYER_GPS)) )
328 successful_read = FALSE;
329 g_warning ( "Line %ld: Layer command inside non-Aggregate Layer (type %d)", line_num, parent_type );
330 push(&stack); /* inside INVALID layer */
336 gint16 type = layer_type_from_string ( line+6 );
340 successful_read = FALSE;
341 g_warning ( "Line %ld: Unknown type %s", line_num, line+6 );
344 else if (parent_type == VIK_LAYER_GPS)
346 stack->data = (gpointer) vik_gps_layer_get_a_child(VIK_GPS_LAYER(stack->under->data));
347 params = vik_layer_get_interface(type)->params;
348 params_count = vik_layer_get_interface(type)->params_count;
352 stack->data = (gpointer) vik_layer_create ( type, vp, NULL, FALSE );
353 params = vik_layer_get_interface(type)->params;
354 params_count = vik_layer_get_interface(type)->params_count;
358 else if ( str_starts_with ( line, "EndLayer", 8, FALSE ) )
360 if ( stack->under == NULL ) {
361 successful_read = FALSE;
362 g_warning ( "Line %ld: Mismatched ~EndLayer command", line_num );
366 /* add any string lists we've accumulated */
367 gpointer layer_and_vp[2];
368 layer_and_vp[0] = stack->data;
369 layer_and_vp[1] = vp;
370 g_hash_table_foreach ( string_lists, (GHFunc) string_list_set_param, layer_and_vp );
371 g_hash_table_remove_all ( string_lists );
373 if ( stack->data && stack->under->data )
375 if (VIK_LAYER(stack->under->data)->type == VIK_LAYER_AGGREGATE) {
376 vik_aggregate_layer_add_layer ( VIK_AGGREGATE_LAYER(stack->under->data), VIK_LAYER(stack->data) );
377 vik_layer_post_read ( VIK_LAYER(stack->data), vp, TRUE );
379 else if (VIK_LAYER(stack->under->data)->type == VIK_LAYER_GPS) {
380 /* TODO: anything else needs to be done here ? */
383 successful_read = FALSE;
384 g_warning ( "Line %ld: EndLayer command inside non-Aggregate Layer (type %d)", line_num, VIK_LAYER(stack->data)->type );
390 else if ( str_starts_with ( line, "LayerData", 9, FALSE ) )
392 if ( stack->data && vik_layer_get_interface(VIK_LAYER(stack->data)->type)->read_file_data )
394 /* must read until hits ~EndLayerData */
395 if ( ! vik_layer_get_interface(VIK_LAYER(stack->data)->type)->read_file_data ( VIK_LAYER(stack->data), f ) )
396 successful_read = FALSE;
399 { /* simply skip layer data over */
400 while ( fgets ( buffer, 4096, f ) )
407 if ( len > 0 && line[len-1] == '\n' )
409 if ( len > 0 && line[len-1] == '\r' )
411 if ( strcasecmp ( line, "~EndLayerData" ) == 0 )
419 successful_read = FALSE;
420 g_warning ( "Line %ld: Unknown tilde command", line_num );
430 for ( i = 0; i < len; i++ )
431 if ( line[i] == '=' )
434 if ( stack->under == NULL && eq_pos == 12 && strncasecmp ( line, "FILE_VERSION", eq_pos ) == 0) {
435 gint version = strtol(line+13, NULL, 10);
436 g_debug ( "%s: reading file version %d", __FUNCTION__, version );
437 if ( version > VIKING_FILE_VERSION )
438 successful_read = FALSE;
439 // However we'll still carry and attempt to read whatever we can
441 else if ( stack->under == NULL && eq_pos == 4 && strncasecmp ( line, "xmpp", eq_pos ) == 0) /* "hard coded" params: global & for all layer-types */
442 vik_viewport_set_xmpp ( VIK_VIEWPORT(vp), strtod ( line+5, NULL ) );
443 else if ( stack->under == NULL && eq_pos == 4 && strncasecmp ( line, "ympp", eq_pos ) == 0)
444 vik_viewport_set_ympp ( VIK_VIEWPORT(vp), strtod ( line+5, NULL ) );
445 else if ( stack->under == NULL && eq_pos == 3 && strncasecmp ( line, "lat", eq_pos ) == 0 )
446 ll.lat = strtod ( line+4, NULL );
447 else if ( stack->under == NULL && eq_pos == 3 && strncasecmp ( line, "lon", eq_pos ) == 0 )
448 ll.lon = strtod ( line+4, NULL );
449 else if ( stack->under == NULL && eq_pos == 4 && strncasecmp ( line, "mode", eq_pos ) == 0 && strcasecmp ( line+5, "utm" ) == 0)
450 vik_viewport_set_drawmode ( VIK_VIEWPORT(vp), VIK_VIEWPORT_DRAWMODE_UTM);
451 else if ( stack->under == NULL && eq_pos == 4 && strncasecmp ( line, "mode", eq_pos ) == 0 && strcasecmp ( line+5, "expedia" ) == 0)
452 vik_viewport_set_drawmode ( VIK_VIEWPORT(vp), VIK_VIEWPORT_DRAWMODE_EXPEDIA );
453 else if ( stack->under == NULL && eq_pos == 4 && strncasecmp ( line, "mode", eq_pos ) == 0 && strcasecmp ( line+5, "google" ) == 0)
455 successful_read = FALSE;
456 g_warning ( _("Draw mode '%s' no more supported"), "google" );
458 else if ( stack->under == NULL && eq_pos == 4 && strncasecmp ( line, "mode", eq_pos ) == 0 && strcasecmp ( line+5, "kh" ) == 0)
460 successful_read = FALSE;
461 g_warning ( _("Draw mode '%s' no more supported"), "kh" );
463 else if ( stack->under == NULL && eq_pos == 4 && strncasecmp ( line, "mode", eq_pos ) == 0 && strcasecmp ( line+5, "mercator" ) == 0)
464 vik_viewport_set_drawmode ( VIK_VIEWPORT(vp), VIK_VIEWPORT_DRAWMODE_MERCATOR );
465 else if ( stack->under == NULL && eq_pos == 4 && strncasecmp ( line, "mode", eq_pos ) == 0 && strcasecmp ( line+5, "latlon" ) == 0)
466 vik_viewport_set_drawmode ( VIK_VIEWPORT(vp), VIK_VIEWPORT_DRAWMODE_LATLON );
467 else if ( stack->under == NULL && eq_pos == 5 && strncasecmp ( line, "color", eq_pos ) == 0 )
468 vik_viewport_set_background_color ( VIK_VIEWPORT(vp), line+6 );
469 else if ( stack->under == NULL && eq_pos == 14 && strncasecmp ( line, "highlightcolor", eq_pos ) == 0 )
470 vik_viewport_set_highlight_color ( VIK_VIEWPORT(vp), line+15 );
471 else if ( stack->under == NULL && eq_pos == 9 && strncasecmp ( line, "drawscale", eq_pos ) == 0 )
472 vik_viewport_set_draw_scale ( VIK_VIEWPORT(vp), TEST_BOOLEAN(line+10) );
473 else if ( stack->under == NULL && eq_pos == 14 && strncasecmp ( line, "drawcentermark", eq_pos ) == 0 )
474 vik_viewport_set_draw_centermark ( VIK_VIEWPORT(vp), TEST_BOOLEAN(line+15) );
475 else if ( stack->under == NULL && eq_pos == 13 && strncasecmp ( line, "drawhighlight", eq_pos ) == 0 )
476 vik_viewport_set_draw_highlight ( VIK_VIEWPORT(vp), TEST_BOOLEAN(line+14) );
477 else if ( stack->under && eq_pos == 4 && strncasecmp ( line, "name", eq_pos ) == 0 )
478 vik_layer_rename ( VIK_LAYER(stack->data), line+5 );
479 else if ( eq_pos == 7 && strncasecmp ( line, "visible", eq_pos ) == 0 )
480 VIK_LAYER(stack->data)->visible = TEST_BOOLEAN(line+8);
481 else if ( eq_pos != -1 && stack->under )
483 gboolean found_match = FALSE;
485 /* go thru layer params. if len == eq_pos && starts_with jazz, set it. */
486 /* also got to check for name and visible. */
490 successful_read = FALSE;
491 g_warning ( "Line %ld: No options for this kind of layer", line_num );
495 for ( i = 0; i < params_count; i++ )
496 if ( strlen(params[i].name) == eq_pos && strncasecmp ( line, params[i].name, eq_pos ) == 0 )
500 if ( params[i].type == VIK_LAYER_PARAM_STRING_LIST ) {
501 GList *l = g_list_append ( g_hash_table_lookup ( string_lists, GINT_TO_POINTER ((gint) i) ),
503 g_hash_table_replace ( string_lists, GINT_TO_POINTER ((gint)i), l );
504 /* add the value to a list, possibly making a new list.
505 * this will be passed to the layer when we read an ~EndLayer */
507 switch ( params[i].type )
509 case VIK_LAYER_PARAM_DOUBLE: x.d = strtod(line, NULL); break;
510 case VIK_LAYER_PARAM_UINT: x.u = strtoul(line, NULL, 10); break;
511 case VIK_LAYER_PARAM_INT: x.i = strtol(line, NULL, 10); break;
512 case VIK_LAYER_PARAM_BOOLEAN: x.b = TEST_BOOLEAN(line); break;
513 case VIK_LAYER_PARAM_COLOR: memset(&(x.c), 0, sizeof(x.c)); /* default: black */
514 gdk_color_parse ( line, &(x.c) ); break;
515 /* STRING or STRING_LIST -- if STRING_LIST, just set param to add a STRING */
518 vik_layer_set_param ( VIK_LAYER(stack->data), i, x, vp, TRUE );
523 if ( ! found_match ) {
524 // ATM don't flow up this issue because at least one internal parameter has changed from version 1.3
525 // and don't what to worry users about raising such issues
526 // TODO Maybe hold old values here - compare the line value against them and if a match
527 // generate a different style of message in the GUI...
528 // successful_read = FALSE;
529 g_warning ( "Line %ld: Unknown parameter. Line:\n%s", line_num, line );
533 successful_read = FALSE;
534 g_warning ( "Line %ld: Invalid parameter or parameter outside of layer.", line_num );
548 if ( stack->under && stack->under->data && stack->data )
550 vik_aggregate_layer_add_layer ( VIK_AGGREGATE_LAYER(stack->under->data), VIK_LAYER(stack->data) );
551 vik_layer_post_read ( VIK_LAYER(stack->data), vp, TRUE );
556 if ( ll.lat != 0.0 || ll.lon != 0.0 )
557 vik_viewport_set_center_latlon ( VIK_VIEWPORT(vp), &ll );
559 if ( ( ! VIK_LAYER(top)->visible ) && VIK_LAYER(top)->realized )
560 vik_treeview_item_set_visible ( VIK_LAYER(top)->vt, &(VIK_LAYER(top)->iter), FALSE );
562 /* delete anything we've forgotten about -- should only happen when file ends before an EndLayer */
563 g_hash_table_foreach ( string_lists, string_list_delete, NULL );
564 g_hash_table_destroy ( string_lists );
566 return successful_read;
573 new default layer of type (str_to_type) (check interface->name)
575 VikLayer *vl = stack->data;
577 vik_aggregate_layer_add_layer(stack->data, vl);
579 vik_layer_data ( VIK_LAYER_DATA(stack->data), f, vp );
583 /* ---------------------------------------------------- */
585 static FILE *xfopen ( const char *fn, const char *mode )
587 if ( strcmp(fn,"-") == 0 )
590 return g_fopen(fn, "r");
593 static void xfclose ( FILE *f )
595 if ( f != stdin && f != stdout ) {
602 * Function to determine if a filename is a 'viking' type file
604 gboolean check_file_magic_vik ( const gchar *filename )
606 gboolean result = FALSE;
607 FILE *ff = xfopen ( filename, "r" );
609 result = check_magic ( ff, VIK_MAGIC );
615 VikLoadType_t a_file_load ( VikAggregateLayer *top, VikViewport *vp, const gchar *filename_or_uri )
617 g_return_val_if_fail ( vp != NULL, LOAD_TYPE_READ_FAILURE );
619 char *filename = (char *)filename_or_uri;
620 if (strncmp(filename, "file://", 7) == 0)
621 filename = filename + 7;
623 FILE *f = xfopen ( filename, "r" );
626 return LOAD_TYPE_READ_FAILURE;
628 VikLoadType_t load_answer = LOAD_TYPE_OTHER_SUCCESS;
630 // Attempt loading the primary file type first - our internal .vik file:
631 if ( check_magic ( f, VIK_MAGIC ) )
633 if ( file_read ( top, f, vp ) )
634 load_answer = LOAD_TYPE_VIK_SUCCESS;
636 load_answer = LOAD_TYPE_VIK_FAILURE_NON_FATAL;
640 // For all other file types which consist of tracks, routes and/or waypoints,
641 // must be loaded into a new TrackWaypoint layer (hence it be created)
642 gboolean success = TRUE; // Detect load failures - mainly to remove the layer created as it's not required
644 VikLayer *vtl = vik_layer_create ( VIK_LAYER_TRW, vp, NULL, FALSE );
646 // In fact both kml & gpx files start the same as they are in xml
647 if ( check_file_ext ( filename, ".kml" ) && check_magic ( f, GPX_MAGIC ) ) {
648 // Implicit Conversion
649 if ( ! ( success = a_babel_convert_from ( VIK_TRW_LAYER(vtl), "-i kml", filename, NULL, NULL, NULL ) ) ) {
650 load_answer = LOAD_TYPE_GPSBABEL_FAILURE;
653 // NB use a extension check first, as a GPX file header may have a Byte Order Mark (BOM) in it
654 // - which currently confuses our check_magic function
655 else if ( check_file_ext ( filename, ".gpx" ) || check_magic ( f, GPX_MAGIC ) ) {
656 if ( ! ( success = a_gpx_read_file ( VIK_TRW_LAYER(vtl), f ) ) ) {
657 load_answer = LOAD_TYPE_GPX_FAILURE;
661 // Try final supported file type
662 if ( ! ( success = a_gpspoint_read_file ( VIK_TRW_LAYER(vtl), f ) ) ) {
663 // Failure here means we don't know how to handle the file
664 load_answer = LOAD_TYPE_UNSUPPORTED_FAILURE;
668 // Clean up when we can't handle the file
671 g_object_unref ( vtl );
674 // Complete the setup from the successful load
675 vik_layer_rename ( vtl, a_file_basename ( filename ) );
676 vik_layer_post_read ( vtl, vp, TRUE );
677 vik_aggregate_layer_add_layer ( top, vtl );
678 vik_trw_layer_auto_set_view ( VIK_TRW_LAYER(vtl), vp );
685 gboolean a_file_save ( VikAggregateLayer *top, gpointer vp, const gchar *filename )
689 if (strncmp(filename, "file://", 7) == 0)
690 filename = filename + 7;
692 f = g_fopen(filename, "w");
697 file_write ( top, f, vp );
706 const gchar *a_file_basename ( const gchar *filename )
708 const gchar *t = filename + strlen(filename) - 1;
709 while ( --t > filename )
710 if ( *(t-1) == FILE_SEP )
718 gboolean is_gpx = check_file_ext ( "a/b/c.gpx", ".gpx" );
720 gboolean check_file_ext ( const gchar *filename, const gchar *fileext )
722 g_return_val_if_fail ( filename != NULL, FALSE );
723 g_return_val_if_fail ( fileext && fileext[0]=='.', FALSE );
724 const gchar *basename = a_file_basename(filename);
728 const char * dot = strrchr(basename, '.');
729 if (dot && !strcmp(dot, fileext))
737 * @vtl: The TrackWaypoint to export data from
738 * @filename: The name of the file to be written
739 * @file_type: Choose one of the supported file types for the export
740 * @trk: If specified then only export this track rather than the whole layer
741 * @write_hidden: Whether to write invisible items
743 * A general export command to convert from Viking TRW layer data to an external supported format.
744 * The write_hidden option is provided mainly to be able to transfer selected items when uploading to a GPS
746 gboolean a_file_export ( VikTrwLayer *vtl, const gchar *filename, VikFileType_t file_type, VikTrack *trk, gboolean write_hidden )
748 GpxWritingOptions options = { FALSE, FALSE, write_hidden, FALSE };
749 FILE *f = g_fopen ( filename, "w" );
753 switch ( file_type ) {
755 // trk defined so can set the option
756 options.is_route = trk->is_route;
757 a_gpx_write_track_file ( trk, f, &options );
760 g_critical("Houston, we've had a problem. file_type=%d", file_type);
763 switch ( file_type ) {
764 case FILE_TYPE_GPSMAPPER:
765 a_gpsmapper_write_file ( vtl, f );
768 a_gpx_write_file ( vtl, f, &options );
770 case FILE_TYPE_GPSPOINT:
771 a_gpspoint_write_file ( vtl, f );
776 switch ( a_vik_get_kml_export_units () ) {
777 case VIK_KML_EXPORT_UNITS_STATUTE:
778 return a_babel_convert_to ( vtl, NULL, "-o kml", filename, NULL, NULL );
780 case VIK_KML_EXPORT_UNITS_NAUTICAL:
781 return a_babel_convert_to ( vtl, NULL, "-o kml,units=n", filename, NULL, NULL );
784 // VIK_KML_EXPORT_UNITS_METRIC:
785 return a_babel_convert_to ( vtl, NULL, "-o kml,units=m", filename, NULL, NULL );
790 g_critical("Houston, we've had a problem. file_type=%d", file_type);