| // $Id: field_integer.cpp,v 1.21 2002/07/02 22:12:13 t1mpy Exp $ |
| |
| // id3lib: a C++ library for creating and manipulating id3v1/v2 tags |
| // Copyright 1999, 2000 Scott Thomas Haug |
| |
| // This library is free software; you can redistribute it and/or modify it |
| // under the terms of the GNU Library General Public License as published by |
| // the Free Software Foundation; either version 2 of the License, or (at your |
| // option) any later version. |
| // |
| // This library 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 Library General Public |
| // License for more details. |
| // |
| // You should have received a copy of the GNU Library General Public License |
| // along with this library; if not, write to the Free Software Foundation, |
| // Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| |
| // The id3lib authors encourage improvements and optimisations to be sent to |
| // the id3lib coordinator. Please see the README file for details on where to |
| // send such submissions. See the AUTHORS file for a list of people who have |
| // contributed to id3lib. See the ChangeLog file for a list of changes to |
| // id3lib. These files are distributed with id3lib at |
| // http://download.sourceforge.net/id3lib/ |
| |
| #include "field_impl.h" |
| #include "id3/utils.h" // has <config.h> "id3/id3lib_streams.h" "id3/globals.h" "id3/id3lib_strings.h" |
| #include "io_helpers.h" |
| |
| using namespace dami; |
| |
| /** \fn ID3_Field& ID3_Field::operator=(uint32 val) |
| ** \brief A shortcut for the Set method. |
| ** |
| ** \code |
| ** myFrame.GetField(ID3FN_PICTURETYPE)->= 0x0B; |
| ** \endcode |
| ** |
| ** \param val The data to assign to this field |
| ** \sa Set(uint32) |
| **/ |
| |
| /** \brief Sets the value of the field to the specified integer. |
| ** \param data The data to assign to this field |
| **/ |
| void ID3_FieldImpl::Set(uint32 val) |
| { |
| this->SetInteger(val); |
| } |
| |
| void ID3_FieldImpl::SetInteger(uint32 val) |
| { |
| if (this->GetType() == ID3FTY_INTEGER) |
| { |
| this->Clear(); |
| |
| _integer = val; |
| _changed = true; |
| } |
| } |
| |
| /** \fn uint32 ID3_Field::Get() const |
| ** \brief Returns the value of the integer field. |
| ** |
| ** \code |
| ** uint32 picType = myFrame.GetField(ID3FN_PICTURETYPE)->Get(); |
| ** \endcode |
| ** |
| ** \return The value of the integer field |
| **/ |
| uint32 ID3_FieldImpl::Get() const |
| { |
| return this->GetInteger(); |
| } |
| |
| uint32 ID3_FieldImpl::GetInteger() const |
| { |
| uint32 val = 0; |
| if (this->GetType() == ID3FTY_INTEGER) |
| { |
| val = _integer; |
| } |
| return val; |
| } |
| |
| bool ID3_FieldImpl::ParseInteger(ID3_Reader& reader) |
| { |
| ID3D_NOTICE( "ID3_FieldImpl::ParseInteger(): beg = " << reader.getBeg() ); |
| ID3D_NOTICE( "ID3_FieldImpl::ParseInteger(): cur = " << reader.getCur() ); |
| ID3D_NOTICE( "ID3_FieldImpl::ParseInteger(): end = " << reader.getEnd() ); |
| bool success = false; |
| if (!reader.atEnd()) |
| { |
| this->Clear(); |
| size_t fixed = this->Size(); |
| size_t nBytes = (fixed > 0) ? fixed : sizeof(uint32); |
| this->Set(io::readBENumber(reader, nBytes)); |
| _changed = false; |
| success = true; |
| } |
| return success; |
| } |
| |
| void ID3_FieldImpl::RenderInteger(ID3_Writer& writer) const |
| { |
| io::writeBENumber(writer, _integer, this->Size()); |
| } |
| |