src/GraphvizHelpers.cpp

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/* dlvhex -- Answer-Set Programming with external interfaces.
 * Copyright (C) 2005-2007 Roman Schindlauer
 * Copyright (C) 2006-2015 Thomas Krennwallner
 * Copyright (C) 2009-2016 Peter Schüller
 * Copyright (C) 2011-2016 Christoph Redl
 * Copyright (C) 2015-2016 Tobias Kaminski
 * Copyright (C) 2015-2016 Antonius Weinzierl
 *
 * This file is part of dlvhex.
 *
 * dlvhex is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * dlvhex is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with dlvhex; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif                           // HAVE_CONFIG_H

#include "dlvhex2/GraphvizHelpers.h"

#include <ostream>
#include <string>

DLVHEX_NAMESPACE_BEGIN

namespace graphviz
{

    void escape(std::ostream& o, const std::string& s) {
        for(std::string::const_iterator c = s.begin();
        c != s.end(); ++c) {
            // escape " into \"
            // escape < into <
            // escape > into >
            // escape # into \#
            // escape { into \{
            // escape } into \}
            // escape \n into \\n
            switch( *c ) {
                case '"': o << "\\\""; break;
                case '<': o << "\\<"; break;
                case '>': o << "\\>"; break;
                case '#': o << "\\#"; break;
                case '{': o << "\\{"; break;
                case '}': o << "\\}"; break;
                case '\n': o << "\\n"; break;
                default: o << *c; break;
            }
        }
    }

}


DLVHEX_NAMESPACE_END

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