/**
* a_babel_convert_from:
* @vt: The TRW layer to place data into. Duplicate items will be overwritten.
* @process_options: The options to control the appropriate processing function. See #ProcessOptions for more detail
* @cb: Optional callback function. Same usage as in a_babel_convert().
* @user_data: passed along to cb
* @download_options: If downloading from a URL use these options (may be NULL)
*
* Loads data into a trw layer from a file, using gpsbabel. This routine is synchronous;
* that is, it will block the calling program until the conversion is done. To avoid blocking, call
* this routine from a worker thread.
*
* Returns: %TRUE on success
*/
gboolean a_babel_convert_from ( VikTrwLayer *vt, ProcessOptions *process_options, BabelStatusFunc cb, gpointer user_data, DownloadFileOptions *download_options )
{
if ( !process_options ) return FALSE;
if ( process_options->url )
return a_babel_convert_from_url_filter ( vt, process_options->url, process_options->input_file_type, process_options->babel_filters, cb, user_data, download_options );
if ( process_options->babelargs )
return a_babel_convert_from_filter ( vt, process_options->babelargs, process_options->filename, process_options->babel_filters, cb, user_data, download_options );
if ( process_options->shell_command )
return a_babel_convert_from_shellcommand ( vt, process_options->shell_command, process_options->input_file_type, cb, user_data, download_options );
return FALSE;
}
/**
* a_babel_convert_from_url_or_shell:
* @vt: The #VikTrwLayer where to insert the collected data
* @url: the URL to fetch
* @cb: Optional callback function. Same usage as in a_babel_convert().
* @user_data: passed along to cb
* @options: download options. Maybe NULL.
*
* Download the file pointed by the URL and optionally uses GPSBabel to convert from input_file_type.
* If input_file_type is %NULL, doesn't use GPSBabel. Input must be GPX.
*
* Returns: %TRUE on successful invocation of GPSBabel or read of the GPX
*
*/
gboolean a_babel_convert_from_url_or_shell ( VikTrwLayer *vt, const char *input, const char *input_type, BabelStatusFunc cb, gpointer user_data, DownloadMapOptions *options )
{
/* Check nature of input */
gboolean isUrl = FALSE;
int i = 0;
for (i = 0 ; PROTOS[i] != NULL ; i++)
{
const gchar *proto = PROTOS[i];
if (strncmp (input, proto, strlen(proto)) == 0)
{
/* Procotol matches: save result */
isUrl = TRUE;
}
}
/* Do the job */
if (isUrl)
return a_babel_convert_from_url (vt, input, input_type, cb, user_data, options);
else
return a_babel_convert_from_shellcommand (vt, input, input_type, cb, user_data, options);
}
/* this routine is the worker thread. there is only one simultaneous download allowed */
static void get_from_anything ( w_and_interface_t *wi )
{
gchar *cmd = wi->cmd;
gchar *extra = wi->extra;
gboolean result = TRUE;
VikTrwLayer *vtl = NULL;
gboolean creating_new_layer = TRUE;
acq_dialog_widgets_t *w = wi->w;
VikDataSourceInterface *source_interface = wi->w->source_interface;
g_free ( wi );
wi = NULL;
gdk_threads_enter();
if (source_interface->mode == VIK_DATASOURCE_ADDTOLAYER) {
VikLayer *current_selected = vik_layers_panel_get_selected ( w->vlp );
if ( IS_VIK_TRW_LAYER(current_selected) ) {
vtl = VIK_TRW_LAYER(current_selected);
creating_new_layer = FALSE;
}
}
if ( creating_new_layer ) {
vtl = VIK_TRW_LAYER ( vik_layer_create ( VIK_LAYER_TRW, w->vvp, NULL, FALSE ) );
vik_layer_rename ( VIK_LAYER ( vtl ), _(source_interface->layer_title) );
gtk_label_set_text ( GTK_LABEL(w->status), _("Working...") );
}
gdk_threads_leave();
switch ( source_interface->type ) {
case VIK_DATASOURCE_GPSBABEL_DIRECT:
result = a_babel_convert_from (vtl, cmd, (BabelStatusFunc) progress_func, extra, w);
break;
case VIK_DATASOURCE_URL:
result = a_babel_convert_from_url (vtl, cmd, extra, (BabelStatusFunc) progress_func, w);
break;
case VIK_DATASOURCE_SHELL_CMD:
result = a_babel_convert_from_shellcommand ( vtl, cmd, extra, (BabelStatusFunc) progress_func, w);
break;
default:
g_critical("Houston, we've had a problem.");
}
g_free ( cmd );
g_free ( extra );
if (!result) {
gdk_threads_enter();
gtk_label_set_text ( GTK_LABEL(w->status), _("Error: acquisition failed.") );
if ( creating_new_layer )
g_object_unref ( G_OBJECT ( vtl ) );
gdk_threads_leave();
}
else {
gdk_threads_enter();
if (w->ok) {
gtk_label_set_text ( GTK_LABEL(w->status), _("Done.") );
if ( creating_new_layer ) {
/* Only create the layer if it actually contains anything useful */
if ( g_hash_table_size (vik_trw_layer_get_tracks(vtl)) ||
g_hash_table_size (vik_trw_layer_get_waypoints(vtl)) )
vik_aggregate_layer_add_layer( vik_layers_panel_get_top_layer(w->vlp), VIK_LAYER(vtl));
else
gtk_label_set_text ( GTK_LABEL(w->status), _("No data.") );
}
/* View this data if available and is desired */
if ( vtl && source_interface->autoview ) {
vik_trw_layer_auto_set_view ( vtl, vik_layers_panel_get_viewport(w->vlp) );
vik_layers_panel_emit_update (w->vlp);
}
if ( source_interface->keep_dialog_open ) {
gtk_dialog_set_response_sensitive ( GTK_DIALOG(w->dialog), GTK_RESPONSE_ACCEPT, TRUE );
gtk_dialog_set_response_sensitive ( GTK_DIALOG(w->dialog), GTK_RESPONSE_REJECT, FALSE );
} else {
gtk_dialog_response ( GTK_DIALOG(w->dialog), GTK_RESPONSE_ACCEPT );
}
} else {
/* canceled */
if ( creating_new_layer )
g_object_unref(vtl);
}
}
if ( source_interface->cleanup_func )
source_interface->cleanup_func ( w->user_data );
if ( w->ok ) {
w->ok = FALSE;
} else {
g_free ( w );
}
gdk_threads_leave();
g_thread_exit ( NULL );
}