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// -*- C++ -*-
// $Id: io_strings.h,v 1.6 2002/06/29 17:43:24 t1mpy Exp $
// id3lib: a software 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/
#ifndef _ID3LIB_IO_STRINGS_H_
#define _ID3LIB_IO_STRINGS_H_
#include "id3/id3lib_strings.h"
#include "reader.h"
#include "writer.h"
#ifndef min
#define min(a,b) (((a) < (b)) ? (a) : (b))
#endif
namespace dami
{
namespace io
{
class ID3_CPP_EXPORT StringReader : public ID3_Reader
{
const String& _string;
pos_type _cur;
public:
StringReader(const String& string) : _string(string), _cur(0) { ; }
virtual ~StringReader() { ; }
virtual void close() { ; }
virtual int_type peekChar()
{
if (!this->atEnd())
{
return _string[_cur];
}
return END_OF_READER;
}
/** Read up to \c len chars into buf and advance the internal position
** accordingly. Returns the number of characters read into buf.
**/
size_type readChars(char buf[], size_type len)
{
return this->readChars((char_type*) buf, len);
}
virtual size_type readChars(char_type buf[], size_type len)
{
size_type size = min((unsigned int)len, (unsigned int)(_string.size() - _cur));
_string.copy(reinterpret_cast<String::value_type *>(buf), size, _cur);
_cur += size;
return size;
}
virtual pos_type getCur()
{
return _cur;
}
virtual pos_type getBeg()
{
return 0;
}
virtual pos_type getEnd()
{
return _string.size();
}
/** Set the value of the internal position for reading.
**/
virtual pos_type setCur(pos_type pos)
{
pos_type end = this->getEnd();
_cur = (pos < end) ? pos : end;
return _cur;
}
virtual bool atEnd()
{
return _cur >= _string.size();
}
virtual size_type skipChars(size_type len)
{
size_type size = min((unsigned int)len, (unsigned int)(_string.size() - _cur));
_cur += size;
return size;
}
};
class ID3_CPP_EXPORT BStringReader : public ID3_Reader
{
const BString& _string;
pos_type _cur;
public:
BStringReader(const BString& string) : _string(string), _cur(0) { ; }
virtual ~BStringReader() { ; }
virtual void close() { ; }
virtual int_type peekChar()
{
if (!this->atEnd())
{
return _string[_cur];
}
return END_OF_READER;
}
/** Read up to \c len chars into buf and advance the internal position
** accordingly. Returns the number of characters read into buf.
**/
size_type readChars(char buf[], size_type len)
{
return this->readChars((char_type*) buf, len);
}
virtual size_type readChars(char_type buf[], size_type len)
{
size_type size = min((unsigned int)len, (unsigned int)(_string.size() - _cur));
_string.copy(reinterpret_cast<BString::value_type *>(buf), size, _cur);
_cur += size;
return size;
}
virtual pos_type getCur()
{
return _cur;
}
virtual pos_type getBeg()
{
return 0;
}
virtual pos_type getEnd()
{
return _string.size();
}
/** Set the value of the internal position for reading.
**/
virtual pos_type setCur(pos_type pos)
{
pos_type end = this->getEnd();
_cur = (pos < end) ? pos : end;
return _cur;
}
virtual bool atEnd()
{
return _cur >= _string.size();
}
virtual size_type skipChars(size_type len)
{
size_type size = min((unsigned int)len,(unsigned int)( _string.size() - _cur));
_cur += size;
return size;
}
};
class ID3_CPP_EXPORT StringWriter : public ID3_Writer
{
String& _string;
public:
StringWriter(String& string) : _string(string) { ; }
virtual ~StringWriter() { ; }
void close() { ; }
void flush() { ; }
virtual size_type writeChars(const char buf[], size_type len)
{
_string.append(reinterpret_cast<const String::value_type *>(buf), len);
return len;
}
size_type writeChars(const char_type buf[], size_type len)
{
_string.append(reinterpret_cast<const String::value_type *>(buf), len);
return len;
}
pos_type getCur()
{
return _string.size();
}
};
class ID3_CPP_EXPORT BStringWriter : public ID3_Writer
{
BString& _string;
public:
BStringWriter(BString& string) : _string(string) { ; }
virtual ~BStringWriter() { ; }
void close() { ; }
void flush() { ; }
virtual size_type writeChars(const char buf[], size_type len)
{
_string.append(reinterpret_cast<const BString::value_type *>(buf), len);
return len;
}
size_type writeChars(const char_type buf[], size_type len)
{
_string.append(reinterpret_cast<const BString::value_type *>(buf), len);
return len;
}
pos_type getCur()
{
return _string.size();
}
};
};
};
#endif /* _ID3LIB_IO_STRINGS_H_ */
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