src/field_integer.cpp

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00001 // $Id: field_integer.cpp,v 1.21 2002/07/02 22:12:13 t1mpy Exp $
00002 
00003 // id3lib: a C++ library for creating and manipulating id3v1/v2 tags
00004 // Copyright 1999, 2000  Scott Thomas Haug
00005 
00006 // This library is free software; you can redistribute it and/or modify it
00007 // under the terms of the GNU Library General Public License as published by
00008 // the Free Software Foundation; either version 2 of the License, or (at your
00009 // option) any later version.
00010 //
00011 // This library is distributed in the hope that it will be useful, but WITHOUT
00012 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
00013 // FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
00014 // License for more details.
00015 //
00016 // You should have received a copy of the GNU Library General Public License
00017 // along with this library; if not, write to the Free Software Foundation,
00018 // Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
00019 
00020 // The id3lib authors encourage improvements and optimisations to be sent to
00021 // the id3lib coordinator.  Please see the README file for details on where to
00022 // send such submissions.  See the AUTHORS file for a list of people who have
00023 // contributed to id3lib.  See the ChangeLog file for a list of changes to
00024 // id3lib.  These files are distributed with id3lib at
00025 // http://download.sourceforge.net/id3lib/
00026 
00027 #include "field_impl.h"
00028 #include "id3/utils.h" // has <config.h> "id3/id3lib_streams.h" "id3/globals.h" "id3/id3lib_strings.h"
00029 #include "io_helpers.h"
00030 
00031 using namespace dami;
00032 
00047 void ID3_FieldImpl::Set(uint32 val)
00048 {
00049   this->SetInteger(val);
00050 }
00051 
00052 void ID3_FieldImpl::SetInteger(uint32 val)
00053 {
00054   if (this->GetType() == ID3FTY_INTEGER)
00055   {
00056     this->Clear();
00057     
00058     _integer = val;
00059     _changed = true;
00060   }
00061 }
00062 
00072 uint32 ID3_FieldImpl::Get() const
00073 {
00074   return this->GetInteger();
00075 }
00076 
00077 uint32 ID3_FieldImpl::GetInteger() const
00078 {
00079   uint32 val = 0;
00080   if (this->GetType() == ID3FTY_INTEGER)
00081   {
00082     val = _integer;
00083   }
00084   return val;
00085 }
00086 
00087 bool ID3_FieldImpl::ParseInteger(ID3_Reader& reader)
00088 {
00089   ID3D_NOTICE( "ID3_FieldImpl::ParseInteger(): beg = " << reader.getBeg() );
00090   ID3D_NOTICE( "ID3_FieldImpl::ParseInteger(): cur = " << reader.getCur() );
00091   ID3D_NOTICE( "ID3_FieldImpl::ParseInteger(): end = " << reader.getEnd() );
00092   bool success = false;
00093   if (!reader.atEnd())
00094   {
00095     this->Clear();
00096     size_t fixed = this->Size();
00097     size_t nBytes = (fixed > 0) ? fixed : sizeof(uint32);
00098     this->Set(io::readBENumber(reader, nBytes));
00099     _changed = false;
00100     success = true;
00101   }
00102   return success;
00103 }
00104 
00105 void ID3_FieldImpl::RenderInteger(ID3_Writer& writer) const
00106 {
00107   io::writeBENumber(writer, _integer, this->Size());
00108 }
00109 

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