id3lib 3.8.3
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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