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121 lines
3.4 KiB
C++
121 lines
3.4 KiB
C++
/***************************************************************************
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qgsgrass.cpp - Data provider for GRASS format
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-------------------
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begin : March, 2004
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copyright : (C) 2004 by Radim Blazek
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email : blazek@itc.it
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***************************************************************************/
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/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#include <iostream>
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#include "qstring.h"
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#include "qgsgrass.h"
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void QgsGrass::init( void ) {
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if ( !initialized ) {
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// Is it active mode ?
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if ( getenv ("GISRC") ) {
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active = true;
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// Store default values
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defaultGisdbase = G_gisdbase();
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defaultLocation = G_location();
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defaultMapset = G_mapset();
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} else {
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active = false;
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}
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// Don't use GISRC file and read/write GRASS variables (from location G_VAR_GISRC) to memory only.
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G_set_gisrc_mode ( G_GISRC_MODE_MEMORY );
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// Init GRASS libraries (required)
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G_no_gisinit(); // Doesn't check write permissions for mapset compare to G_gisinit("libgrass++");
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// Set error function
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G_set_error_routine ( &error_routine );
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initialized = 1;
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}
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}
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bool QgsGrass::activeMode( void )
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{
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init();
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return active;
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}
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QString QgsGrass::getDefaultGisdbase ( void ) {
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init();
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return defaultGisdbase;
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}
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QString QgsGrass::getDefaultLocation ( void ) {
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init();
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return defaultLocation;
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}
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QString QgsGrass::getDefaultMapset ( void ) {
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init();
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return defaultMapset;
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}
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void QgsGrass::setLocation( QString gisdbase, QString location )
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{
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#ifdef QGISDEBUG
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std::cerr << "QgsGrass::setLocation(): gisdbase = " << gisdbase << " location = "
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<< location << std::endl;
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#endif
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init();
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// Set principal GRASS variables (in memory)
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G__setenv( "GISDBASE", (char *) gisdbase.ascii() );
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G__setenv( "LOCATION_NAME", (char *) location.ascii() );
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G__setenv( "MAPSET", "PERMANENT"); // PERMANENT must always exist
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// Add all available mapsets to search path
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char **ms = G_available_mapsets();
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for ( int i = 0; ms[i]; i++ ) G_add_mapset_to_search_path ( ms[i] );
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}
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int QgsGrass::initialized = 0;
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bool QgsGrass::active = 0;
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QgsGrass::ERROR QgsGrass::error = QgsGrass::OK;
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QString QgsGrass::error_message;
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QString QgsGrass::defaultGisdbase;
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QString QgsGrass::defaultLocation;
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QString QgsGrass::defaultMapset;
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int QgsGrass::error_routine ( char *msg, int fatal) {
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std::cerr << "error_routine (fatal = " << fatal << "): " << msg << std::endl;
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if ( fatal ) error = FATAL;
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else error = WARNING;
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error_message = msg;
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return 1;
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}
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void QgsGrass::resetError ( void ) {
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error = OK;
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}
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int QgsGrass::getError ( void ) {
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return error;
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}
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QString QgsGrass::getErrorMessage ( void ) {
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return error_message;
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}
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