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Path.h

00001 /*****************************************************************************
00002  * Author:   Valient Gough <vgough@pobox.com>
00003  *
00004  *****************************************************************************
00005  * Copyright (c) 2001, Valient Gough
00006  *
00007  * This library is free software; you can distribute it and/or modify it under
00008  * the terms of the GNU Lesser General Public License (LGPL), as published by
00009  * the Free Software Foundation; either version 2.1 of the License, or (at your
00010  * option) any later version.
00011  *
00012  * This library is distributed in the hope that it will be useful, but WITHOUT
00013  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
00014  * FITNESS FOR A PARTICULAR PURPOSE.  See the LGPL in the file COPYING for more
00015  * details.
00016  *
00017  */
00018 
00019 
00020 #ifndef _Path_incl_
00021 #define _Path_incl_
00022 
00023 #include <rel/TypeStream.h>
00024 #include <rel/StringIODevice.h>
00025 
00026 
00027 namespace rel
00028 {
00029 
00030 
00031     // TypeStream is not virtual, so we can't overwrite it's operation, but we
00032     // can add our own functions..
00033     class Path : public TypeStream
00034     {
00035     public:
00036         Path(const std::string &path, char separator = '/');
00037         Path(const char *path, char separator = '/');
00038         Path(const Path &src);
00039         Path();
00040         virtual ~Path();
00041 
00042         Path &operator = (const Path &src);
00043 
00044         // single path element
00045         bool append(const string &name);  
00046         // possibly multi-element
00047         bool append(const string &name, char separator); 
00048         bool append(const char *name, char separator = '/');
00049 
00050         // create new path from arguments.
00051         static OpaqueValue New(const TypeStream *);
00052 
00053         // empty path
00054         void clear();
00055 
00056 
00057         // These are public so that associated operators can call them..
00058         void Encode(TypeStream &) const;
00059         void Decode(const TypeStream &);
00060     private:
00061 
00062         StreamCoder fCoder;
00063         StringIODevice fBuffer;
00064     };
00065 
00066 } // namespace rel
00067     
00068 rel::TypeStream &operator << (rel::TypeStream &output, const rel::Path &src);
00069 
00070 #endif
00071 

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