Changed OpenMesh directory structure
git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@106 fdac6126-5c0c-442c-9429-916003d36597
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282
src/OpenMesh/Core/System/mostream.hh
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282
src/OpenMesh/Core/System/mostream.hh
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/*===========================================================================*\
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* *
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* OpenMesh *
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* Copyright (C) 2001-2003 by Computer Graphics Group, RWTH Aachen *
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* www.openmesh.org *
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* *
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*---------------------------------------------------------------------------*
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* *
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* License *
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* *
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* This library is free software; you can redistribute it and/or modify it *
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* under the terms of the GNU Lesser General Public License as published *
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* by the Free Software Foundation, version 2.1. *
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* *
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* This library is distributed in the hope that it will be useful, but *
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* WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
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* Lesser General Public License for more details. *
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* *
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* You should have received a copy of the GNU Lesser General Public *
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* License along with this library; if not, write to the Free Software *
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. *
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* *
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\*===========================================================================*/
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//=============================================================================
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//
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// multiplex streams & ultilities
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//
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//=============================================================================
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#ifndef OPENMESH_MOSTREAM_HH
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#define OPENMESH_MOSTREAM_HH
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//== INCLUDES =================================================================
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#include <OpenMesh/Core/System/config.h>
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#include <iostream>
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#if defined( OM_CC_GCC ) && OM_CC_VERSION < 30000
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# include <streambuf.h>
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#else
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# include <streambuf>
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#endif
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#include <vector>
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#include <map>
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#include <string>
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#include <algorithm>
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//== NAMESPACES ===============================================================
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namespace OpenMesh {
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#ifndef DOXY_IGNORE_THIS
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//== CLASS DEFINITION =========================================================
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class basic_multiplex_target
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{
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public:
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virtual ~basic_multiplex_target() {}
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virtual void operator<<(const std::string& _s) = 0;
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};
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template <class T>
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class multiplex_target : public basic_multiplex_target
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{
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public:
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multiplex_target(T& _t) : target_(_t) {}
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virtual void operator<<(const std::string& _s) { target_ << _s; }
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private:
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T& target_;
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};
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//== CLASS DEFINITION =========================================================
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#if defined( OM_CC_GCC ) && OM_CC_VERSION < 30000
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# define STREAMBUF streambuf
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# define INT_TYPE int
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# define TRAITS_TYPE
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#else
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# define STREAMBUF std::basic_streambuf<char>
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#endif
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class multiplex_streambuf : public STREAMBUF
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{
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public:
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typedef STREAMBUF base_type;
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#if defined( OM_CC_GCC ) && OM_CC_VERSION < 30000
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typedef int int_type;
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struct traits_type
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{
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static int_type eof() { return -1; }
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static char to_char_type(int_type c) { return char(c); }
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};
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#else
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typedef base_type::int_type int_type;
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typedef base_type::traits_type traits_type;
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#endif
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// Constructor
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multiplex_streambuf() : enabled_(true) { buffer_.reserve(100); }
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// Destructor
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~multiplex_streambuf()
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{
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tmap_iter t_it(target_map_.begin()), t_end(target_map_.end());
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for (; t_it!=t_end; ++t_it)
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delete t_it->second;
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}
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// buffer enable/disable
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bool is_enabled() const { return enabled_; }
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void enable() { enabled_ = true; }
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void disable() { enabled_ = false; }
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// construct multiplex_target<T> and add it to targets
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template <class T> bool connect(T& _target)
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{
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void* key = (void*) &_target;
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if (target_map_.find(key) != target_map_.end())
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return false;
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target_type* mtarget = new multiplex_target<T>(_target);
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target_map_[key] = mtarget;
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__connect(mtarget);
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return true;
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}
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// disconnect target from multiplexer
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template <class T> bool disconnect(T& _target)
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{
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void* key = (void*) &_target;
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tmap_iter t_it = target_map_.find(key);
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if (t_it != target_map_.end())
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{
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__disconnect(t_it->second);
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target_map_.erase(t_it);
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return true;
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}
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return false;
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}
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protected:
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// output what's in buffer_
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virtual int sync()
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{
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if (!buffer_.empty())
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{
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if (enabled_) multiplex();
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#if defined(OM_CC_GCC) || OM_CC_VERSION < 30000
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buffer_ = ""; // member clear() not available!
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#else
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buffer_.clear();
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#endif
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}
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return base_type::sync();
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}
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// take on char and add it to buffer_
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// if '\n' is encountered, trigger a sync()
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virtual
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int_type overflow(int_type _c = multiplex_streambuf::traits_type::eof())
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{
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char c = traits_type::to_char_type(_c);
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buffer_.push_back(c);
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if (c == '\n') sync();
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return 0;
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}
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private:
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typedef basic_multiplex_target target_type;
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typedef std::vector<target_type*> target_list;
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typedef target_list::iterator tlist_iter;
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typedef std::map<void*, target_type*> target_map;
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typedef target_map::iterator tmap_iter;
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// add _target to list of multiplex targets
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void __connect(target_type* _target) { targets_.push_back(_target); }
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// remove _target from list of multiplex targets
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void __disconnect(target_type* _target) {
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targets_.erase(std::find(targets_.begin(), targets_.end(), _target));
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}
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// multiplex output of buffer_ to all targets
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void multiplex()
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{
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tlist_iter t_it(targets_.begin()), t_end(targets_.end());
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for (; t_it!=t_end; ++t_it)
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**t_it << buffer_;
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}
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private:
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target_list targets_;
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target_map target_map_;
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std::string buffer_;
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bool enabled_;
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};
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#undef STREAMBUF
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//== CLASS DEFINITION =========================================================
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/** \class mostream mostream.hh <OpenMesh/Core/System/mostream.hh>
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This class provides streams that can easily be multiplexed (using
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the connect() method) and toggled on/off (using enable() /
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disable()).
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\see omlog, omout, omerr
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*/
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class mostream : public std::ostream
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{
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public:
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/// Explicit constructor
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explicit mostream() : std::ostream(NULL) { init(&streambuffer_); }
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/// Connect target to multiplexer
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template <class T> bool connect(T& _target)
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{
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return streambuffer_.connect(_target);
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}
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/// Disconnect target from multiplexer
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template <class T> bool disconnect(T& _target)
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{
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return streambuffer_.disconnect(_target);
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}
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/// is buffer enabled
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bool is_enabled() const { return streambuffer_.is_enabled(); }
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/// enable this buffer
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void enable() { streambuffer_.enable(); }
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/// disable this buffer
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void disable() { streambuffer_.disable(); }
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private:
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multiplex_streambuf streambuffer_;
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};
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//=============================================================================
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#endif
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} // namespace OpenMesh
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//=============================================================================
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#endif // OPENMESH_MOSTREAM_HH defined
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//=============================================================================
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