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- // -*- C++ -*-
- // $Id: writer.h,v 1.8 2002/07/02 22:11:10 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_WRITER_H_
- #define _ID3LIB_WRITER_H_
-
- #include "id3/globals.h" //has <stdlib.h> "id3/sized_types.h"
-
- class ID3_CPP_EXPORT ID3_Writer
- {
- public:
- typedef uint32 size_type;
- typedef uint8 char_type;
- typedef uint32 pos_type;
- typedef int32 off_type;
- typedef int16 int_type;
- static const int_type END_OF_WRITER;
-
- /** Close the writer. Any further actions on the writer should fail. **/
- virtual void close() = 0;
-
- /** Flush the writer. **/
- virtual void flush() = 0;
-
- /** Return the beginning position in the writer **/
- virtual pos_type getBeg() { return static_cast<pos_type>(0); }
-
- /** Return the first position that can't be written to. A return value of
- ** -1 indicates no (reasonable) limit to the writer.
- **/
- virtual pos_type getEnd() { return static_cast<pos_type>(-1); }
-
- /** Return the next position that will be written to */
- virtual pos_type getCur() = 0;
-
- /** Return the number of bytes written **/
- virtual size_type getSize() { return this->getCur() - this->getBeg(); }
-
- /** Return the maximum number of bytes that can be written **/
- virtual size_type getMaxSize() { return this->getEnd() - this->getBeg(); }
-
- /** Write a single character and advance the internal position. Note that
- ** the interal position may advance more than one byte for a single
- ** character write. Returns END_OF_WRITER if there isn't a character to
- ** write.
- **/
- virtual int_type writeChar(char_type ch)
- {
- if (this->atEnd())
- {
- return END_OF_WRITER;
- }
- this->writeChars(&ch, 1);
- return ch;
- }
-
- /** Write up to \c len characters into buf and advance the internal position
- ** accordingly. Returns the number of characters write into buf. Note that
- ** the value returned may be less than the number of bytes that the internal
- ** position advances, due to multi-byte characters.
- **/
- virtual size_type writeChars(const char_type buf[], size_type len) = 0;
- virtual size_type writeChars(const char buf[], size_type len)
- {
- return this->writeChars(reinterpret_cast<const char_type *>(buf), len);
- }
-
- virtual bool atEnd()
- {
- return this->getCur() >= this->getEnd();
- }
- };
-
- #endif /* _ID3LIB_WRITER_H_ */
-
-