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include/id3/io_helpers.h

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00001 // -*- C++ -*- 00002 // $Id: io_helpers.h,v 1.7 2002/06/29 17:43:19 t1mpy Exp $ 00003 00004 // id3lib: a software library for creating and manipulating id3v1/v2 tags 00005 // Copyright 1999, 2000 Scott Thomas Haug 00006 00007 // This library is free software; you can redistribute it and/or modify it 00008 // under the terms of the GNU Library General Public License as published by 00009 // the Free Software Foundation; either version 2 of the License, or (at your 00010 // option) any later version. 00011 // 00012 // This library is distributed in the hope that it will be useful, but WITHOUT 00013 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 00014 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public 00015 // License for more details. 00016 // 00017 // You should have received a copy of the GNU Library General Public License 00018 // along with this library; if not, write to the Free Software Foundation, 00019 // Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 00020 00021 // The id3lib authors encourage improvements and optimisations to be sent to 00022 // the id3lib coordinator. Please see the README file for details on where to 00023 // send such submissions. See the AUTHORS file for a list of people who have 00024 // contributed to id3lib. See the ChangeLog file for a list of changes to 00025 // id3lib. These files are distributed with id3lib at 00026 // http://download.sourceforge.net/id3lib/ 00027 00028 #ifndef _ID3LIB_IO_HELPERS_H_ 00029 #define _ID3LIB_IO_HELPERS_H_ 00030 00031 #include "id3/id3lib_strings.h" 00032 #include "reader.h" 00033 #include "writer.h" 00034 00035 namespace dami 00036 { 00037 namespace io 00038 { 00041 class ID3_CPP_EXPORT ExitTrigger 00042 { 00043 ID3_Reader& _reader; 00044 ID3_Reader::pos_type _pos; 00045 bool _locked; 00046 public: 00047 ExitTrigger(ID3_Reader& rdr) 00048 : _reader(rdr), _pos(rdr.getCur()), _locked(true) 00049 { ; } 00050 ExitTrigger(ID3_Reader& rdr, ID3_Reader::pos_type pos) 00051 : _reader(rdr), _pos(pos) 00052 { ; } 00053 virtual ~ExitTrigger() { if (_locked) _reader.setCur(_pos); } 00054 00055 void release() { _locked = false; } 00056 void update() { _pos = _reader.getCur(); } 00057 void setExitPos(ID3_Reader::pos_type pos) { _pos = pos; } 00058 }; 00059 00060 ID3_C_EXPORT String readString(ID3_Reader&); 00061 ID3_C_EXPORT String readText(ID3_Reader&, size_t); 00062 ID3_C_EXPORT String readUnicodeString(ID3_Reader&); 00063 ID3_C_EXPORT String readUnicodeText(ID3_Reader&, size_t); 00064 ID3_C_EXPORT BString readAllBinary(ID3_Reader&); 00065 ID3_C_EXPORT BString readBinary(ID3_Reader&, size_t); 00066 ID3_C_EXPORT uint32 readLENumber(ID3_Reader&, size_t); 00067 ID3_C_EXPORT uint32 readBENumber(ID3_Reader&, size_t); 00068 ID3_C_EXPORT String readTrailingSpaces(ID3_Reader&, size_t); 00069 ID3_C_EXPORT uint32 readUInt28(ID3_Reader&); 00070 00071 ID3_C_EXPORT size_t writeString(ID3_Writer&, String); 00072 ID3_C_EXPORT size_t writeText(ID3_Writer&, String); 00073 ID3_C_EXPORT size_t writeUnicodeString(ID3_Writer&, String, bool = true); 00074 ID3_C_EXPORT size_t writeUnicodeText(ID3_Writer&, String, bool = true); 00075 ID3_C_EXPORT size_t writeBENumber(ID3_Writer&, uint32 val, size_t); 00076 ID3_C_EXPORT size_t writeTrailingSpaces(ID3_Writer&, String, size_t); 00077 ID3_C_EXPORT size_t writeUInt28(ID3_Writer&, uint32); 00078 }; 00079 }; 00080 00081 #endif /* _ID3LIB_IO_HELPERS_H_ */ 00082

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