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Diffstat (limited to 'mmdb2/mmdb_io_stream.cpp')
| -rw-r--r-- | mmdb2/mmdb_io_stream.cpp | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/mmdb2/mmdb_io_stream.cpp b/mmdb2/mmdb_io_stream.cpp new file mode 100644 index 0000000..4dbdd46 --- /dev/null +++ b/mmdb2/mmdb_io_stream.cpp @@ -0,0 +1,112 @@ +// $Id: mmdb_io_stream.cpp $ +// ================================================================= +// +// CCP4 Coordinate Library: support of coordinate-related +// functionality in protein crystallography applications. +// +// Copyright (C) Eugene Krissinel 2000-2013. +// +// This library is free software: you can redistribute it and/or +// modify it under the terms of the GNU Lesser General Public +// License version 3, modified in accordance with the provisions +// of the license to address the requirements of UK law. +// +// You should have received a copy of the modified GNU Lesser +// General Public License along with this library. If not, copies +// may be downloaded from http://www.ccp4.ac.uk/ccp4license.php +// +// This program 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. +// +// ================================================================= +// +// 11.09.13 <-- Date of Last Modification. +// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +// ----------------------------------------------------------------- +// +// **** Module : Stream_ <interface> +// ~~~~~~~~~ +// **** Classes : mmdb::io::Stream ( Basic Stream Class ) +// ~~~~~~~~~ +// +// (C) E. Krissinel 1995-2013 +// +// ================================================================= +// + +#include "mmdb_io_stream.h" + +namespace mmdb { + + namespace io { + + // ========================== CStream =========================== + + // Each streamable class should be derived from Stream + // and have constructor Class(PStream & Object), which should + // initialize all memory of the class, and virtual functions + // read(..) and write(..) (see below). Constructor Class(PStream&) + // must not touch the Object variable. This constructor is used + // only once just before read(..) function. It is assumed that + // read/write functions of Class provide storage/reading of + // all vital data. Function read(..) must read data in exactly + // the same way as function write(..) stores it. + // For using Class in streams, three following functions should + // be supplied: + // + // 1. + // void StreamWrite ( RFile f, RPClass Object ) { + // StreamWrite ( f,(PStream)PClass ); + // } + // + // 2. + // PCStream ClassInit ( RPStream Object ) { + // return (PStream)(new Class(Object)); + // } + // + // 3. + // void StreamRead ( RFile f, RPClass Object ) { + // StreamRead_ ( f,(PStream)Object,ClassInit ); + // } + // + // All these functions are automatically generated by macros + // DefineStreamFunctions(CClass) -- in the header -- and + // MakeStreamFunctions(CClass) -- in the implementation body. + // Then CClass may be streamed in/out using functions #1 and #3. + // StreamRead will return NULL for Object if it was not + // in the stream. If Object existed before StreamRead(..) but + // was not found in the stream, it will be disposed. + + void StreamRead_ ( RFile f, RPStream Object, + InitStreamObject Init ) { + int i; + f.ReadInt ( &i ); + if (i) { + if (!Object) + Object = Init(Object); //Object = new CStream ( Object ); + Object->read ( f ); + } else { + if (Object) delete Object; + Object = NULL; + } + } + + void StreamWrite_ ( RFile f, RPStream Object ) { + int i; + if (Object) { + i = 1; + f.WriteInt ( &i ); + Object->write ( f ); + } else { + i = 0; + f.WriteInt ( &i ); + } + } + + MakeStreamFunctions(Stream) + + } + +} |