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// The authors have released ID3Lib as Public Domain (PD) and claim no copyright,
// patent or other intellectual property protection in this work. This means that
// it may be modified, redistributed and used in commercial and non-commercial
// software and hardware without restrictions. ID3Lib is distributed on an "AS IS"
// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.
//
// The ID3Lib authors encourage improvements and optimisations to be sent to the
// ID3Lib coordinator, currently Dirk Mahoney (dirk@id3.org). Approved
// submissions may be altered, and will be included and released under these terms.
//
// Mon Nov 23 18:34:01 1998
#include <stdio.h>
#include <memory.h>
#include "id3_field.h"
void ID3_Field::Set ( uchar *newData, luint newSize )
{
Clear();
if ( newSize )
{
if ( ! ( data = new uchar[ newSize ] ) )
ID3_THROW ( ID3E_NoMemory );
memcpy ( data, newData, newSize );
size = newSize;
type = ID3FTY_BINARY;
hasChanged = true;
}
return;
}
void ID3_Field::Get ( uchar *buffer, luint buffLength )
{
if ( ! buffer )
ID3_THROW ( ID3E_NoBuffer );
if ( data && size )
{
luint actualBytes = MIN ( buffLength, size );
memcpy ( buffer, data, actualBytes );
}
return;
}
void ID3_Field::FromFile ( char *info )
{
FILE *temp;
luint fileSize;
uchar *buffer;
if ( ! info )
ID3_THROW ( ID3E_NoData );
if ( temp = fopen ( info, "rb" ) )
{
fseek ( temp, 0, SEEK_END );
fileSize = ftell ( temp );
fseek ( temp, 0, SEEK_SET );
if ( buffer = new uchar[ fileSize ] )
{
fread ( buffer, 1, fileSize, temp );
Set ( buffer, fileSize );
delete[] buffer;
}
fclose ( temp );
}
return;
}
void ID3_Field::ToFile ( char *info )
{
if ( ! info )
ID3_THROW ( ID3E_NoData );
if ( ( data != NULL ) && ( size > 0 ) )
{
FILE *temp;
if ( temp = fopen ( info, "wb" ) )
{
fwrite ( data, 1, size, temp );
fclose ( temp );
}
}
return;
}
luint ID3_Field::ParseBinary ( uchar *buffer, luint posn, luint buffSize )
{
luint bytesUsed = 0;
bytesUsed = buffSize - posn;
if ( fixedLength != -1 )
bytesUsed = MIN ( fixedLength, bytesUsed );
Set ( &buffer[ posn ], bytesUsed );
hasChanged = false;
return bytesUsed;
}
luint ID3_Field::RenderBinary ( uchar *buffer )
{
luint bytesUsed = 0;
bytesUsed = BinSize();
memcpy ( buffer, (uchar *) data, bytesUsed );
hasChanged = false;
return bytesUsed;
}
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