| // -*- C++ -*- |
| // $Id: writers.h,v 1.11 2002/07/02 22:11:16 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_WRITERS_H_ |
| #define _ID3LIB_WRITERS_H_ |
| |
| #include "id3/writer.h" |
| #include "id3/id3lib_streams.h" |
| #include <cstring> |
| |
| class ID3_CPP_EXPORT ID3_OStreamWriter : public ID3_Writer |
| { |
| ostream& _stream; |
| pos_type _beg; |
| protected: |
| ostream& getWriter() const { return _stream; } |
| public: |
| ID3_OStreamWriter(ostream& writer) : _stream(writer), _beg(_stream.tellp()) { ; } |
| virtual ~ID3_OStreamWriter() { ; } |
| |
| virtual void close() { ; } |
| virtual void flush() { _stream.flush(); } |
| |
| virtual int_type writeChar(char_type ch) |
| { |
| _stream.put(ch); |
| return ch; |
| } |
| |
| /** Write up to \c len chars into buf and advance the internal position |
| ** accordingly. Returns the number of characters write into buf. |
| **/ |
| virtual size_type writeChars(const char buf[], size_type len) |
| { |
| _stream.write(buf, len); |
| return len; |
| } |
| virtual size_type writeChars(const char_type buf[], size_type len) |
| { |
| _stream.write(reinterpret_cast<const char*>(buf), len); |
| return len; |
| } |
| |
| virtual pos_type getBeg() { return _beg; } |
| virtual pos_type getCur() { return _stream.tellp(); } |
| }; |
| |
| class ID3_CPP_EXPORT ID3_OFStreamWriter : public ID3_OStreamWriter |
| { |
| ofstream& _file; |
| public: |
| ID3_OFStreamWriter(ofstream& writer) |
| : ID3_OStreamWriter(writer), _file(writer) { ; } |
| |
| virtual void close() |
| { |
| _file.close(); |
| } |
| }; |
| |
| class ID3_CPP_EXPORT ID3_IOStreamWriter : public ID3_Writer |
| { |
| iostream& _stream; |
| pos_type _beg; |
| protected: |
| iostream& getWriter() const { return _stream; } |
| public: |
| ID3_IOStreamWriter(iostream& writer) : _stream(writer), _beg(_stream.tellp()) { ; } |
| virtual ~ID3_IOStreamWriter() { ; } |
| |
| virtual void close() { ; } |
| virtual void flush() { _stream.flush(); } |
| |
| virtual int_type writeChar(char_type ch) |
| { |
| _stream.put(ch); |
| return ch; |
| } |
| |
| /** Write up to \c len chars into buf and advance the internal position |
| ** accordingly. Returns the number of characters write into buf. |
| **/ |
| virtual size_type writeChars(const char buf[], size_type len) |
| { |
| _stream.write(buf, len); |
| return len; |
| } |
| virtual size_type writeChars(const char_type buf[], size_type len) |
| { |
| _stream.write(reinterpret_cast<const char*>(buf), len); |
| return len; |
| } |
| |
| virtual pos_type getBeg() { return _beg; } |
| virtual pos_type getCur() { return _stream.tellp(); } |
| }; |
| |
| class ID3_CPP_EXPORT ID3_FStreamWriter : public ID3_IOStreamWriter |
| { |
| fstream& _file; |
| public: |
| ID3_FStreamWriter(fstream& writer) |
| : ID3_IOStreamWriter(writer), _file(writer) { ; } |
| |
| virtual void close() |
| { |
| _file.close(); |
| } |
| }; |
| |
| class ID3_CPP_EXPORT ID3_MemoryWriter : public ID3_Writer |
| { |
| const char_type* _beg; |
| /* */ char_type* _cur; |
| const char_type* _end; |
| protected: |
| void setBuffer(char_type* buf, size_t size) |
| { |
| _beg = buf; |
| _cur = buf; |
| _end = buf + size; |
| }; |
| public: |
| ID3_MemoryWriter() |
| { |
| this->setBuffer(NULL, 0); |
| } |
| ID3_MemoryWriter(char_type buf[], size_t size) |
| { |
| this->setBuffer(buf, size); |
| } |
| virtual ~ID3_MemoryWriter() { ; } |
| virtual void close() { ; } |
| virtual void flush() { ; } |
| |
| /** Write up to \c len chars from buf and advance the internal position |
| ** accordingly. Returns the number of characters written from buf. |
| **/ |
| virtual size_type writeChars(const char buf[], size_type len) |
| { |
| return this->writeChars(reinterpret_cast<const char_type *>(buf), len); |
| } |
| virtual size_type writeChars(const char_type buf[], size_type len) |
| { |
| size_type remaining = _end - _cur; |
| size_type size = (remaining > len) ? len : remaining; |
| ::memcpy(_cur, buf, size); |
| _cur += size; |
| return size; |
| } |
| |
| virtual pos_type getCur() |
| { |
| return _cur - _beg; |
| } |
| |
| virtual pos_type getBeg() |
| { |
| return _beg - _beg; |
| } |
| |
| virtual pos_type getEnd() |
| { |
| return _end - _beg; |
| } |
| }; |
| |
| #endif /* _ID3LIB_WRITERS_H_ */ |
| |