81 lines
2.1 KiB
C
81 lines
2.1 KiB
C
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// Copyright (c) 1997
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// Utrecht University (The Netherlands),
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// ETH Zurich (Switzerland),
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// INRIA Sophia-Antipolis (France),
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// Max-Planck-Institute Saarbruecken (Germany),
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// and Tel-Aviv University (Israel). All rights reserved.
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//
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// This file is part of CGAL (www.cgal.org); you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 3 of the License,
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// or (at your option) any later version.
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//
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// Licensees holding a valid commercial license may use this file in
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// accordance with the commercial license agreement provided with the software.
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//
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// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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//
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// $URL$
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// $Id$
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// SPDX-License-Identifier: LGPL-3.0+
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//
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//
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// Author(s) : Lutz Kettner <kettner@inf.ethz.ch>
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#ifndef CGAL_IO_VERBOSE_OSTREAM_H
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#define CGAL_IO_VERBOSE_OSTREAM_H
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#include <iostream>
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namespace CGAL {
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#define CGAL__VERB(x) if (b) *o << x; return *this
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class Verbose_ostream {
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bool b;
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std::ostream* o;
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public:
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Verbose_ostream( bool active = false, std::ostream& out = std::cerr)
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: b(active), o(&out){}
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bool verbose() const { return b; }
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void set_verbose(bool active) { b = active; }
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std::ostream& out() { return *o; }
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template < class T >
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Verbose_ostream& operator<<(const T& t)
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{ CGAL__VERB(t); }
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Verbose_ostream& operator<<( std::ostream& (*f)(std::ostream&))
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{ CGAL__VERB(f); }
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Verbose_ostream& operator<<( std::ios& (*f)(std::ios&))
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{ CGAL__VERB(f); }
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Verbose_ostream& flush()
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{
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if (b)
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o->flush();
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return *this;
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}
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Verbose_ostream& put(char c)
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{
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if (b)
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o->put(c);
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return *this;
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}
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Verbose_ostream& write(const char* s, int n)
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{
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if (b)
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o->write(s, n);
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return *this;
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}
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};
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} //namespace CGAL
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#endif // CGAL_IO_VERBOSE_OSTREAM_H
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