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Diffstat (limited to 'src/field_impl.h')
| -rw-r--r-- | src/field_impl.h | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/src/field_impl.h b/src/field_impl.h new file mode 100644 index 0000000..2163ce6 --- /dev/null +++ b/src/field_impl.h @@ -0,0 +1,154 @@ +// -*- C++ -*- +// $Id: field_impl.h,v 1.4 2002/06/29 14:43:00 t1mpy Exp $ + +// id3lib: a C++ 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_FIELD_IMPL_H_ +#define _ID3LIB_FIELD_IMPL_H_ + +#include <stdlib.h> +#include "field.h" +#include "id3/id3lib_strings.h" + +struct ID3_FieldDef; +struct ID3_FrameDef; +class ID3_Frame; +class ID3_Reader; + +class ID3_FieldImpl : public ID3_Field +{ + friend class ID3_FrameImpl; +public: + ~ID3_FieldImpl(); + + void Clear(); + + size_t Size() const; + size_t BinSize() const; + size_t GetNumTextItems() const; + + // integer field functions + ID3_Field& operator= (uint32 val) { this->Set(val); return *this; } + void Set(uint32); // we have SetInteger functions. Why do we try to overload Set? + uint32 Get() const; // same for GetInteger + + // text field functions + dami::String GetText( size_t index = 0, ID3_TextEnc enc = ID3TE_ISO8859_1 ) const; + size_t SetText( dami::String data, size_t index = 0, ID3_TextEnc enc = ID3TE_ISO8859_1 ); + + // ASCII string field functions + ID3_Field& operator= (const char* s) { this->Set(s); return *this; } + size_t Set(const char* data); + size_t Get(char*, size_t) const; + size_t Get(char*, size_t, size_t) const; + const char* GetRawText() const; + const char* GetRawTextItem(size_t) const; + size_t Add(const char* data); + + // Unicode string field functions + ID3_Field& operator= (const unicode_t* s) { this->Set(s); return *this; } + size_t Set(const unicode_t*); + size_t Get(unicode_t *buffer, size_t) const; + size_t Get(unicode_t *buffer, size_t, size_t) const; + const unicode_t* GetRawUnicodeText() const; + const unicode_t* GetRawUnicodeTextItem(size_t) const; + size_t Add(const unicode_t*); + + // binary field functions + size_t Set(const uchar* buf, size_t size); + size_t Set(const char* buf, size_t size) + { + return this->Set(reinterpret_cast<const uchar *>(buf), size); + } + size_t Get(uchar*, size_t) const; + const uchar* GetRawBinary() const; + void FromFile(const char*); + void ToFile(const char *sInfo) const; + size_t GetBinaryStartPosition(); + + // miscelaneous functions + ID3_Field& operator=( const ID3_Field & ); + bool InScope(ID3_V2Spec spec) const + { return _spec_begin <= spec && spec <= _spec_end; } + + ID3_FieldID GetID() const { return _id; } + ID3_FieldType GetType() const { return _type; } + bool SetEncoding(ID3_TextEnc enc); + ID3_TextEnc GetEncoding() const { return _enc; } + bool IsEncodable() const { return (_flags & ID3FF_ENCODABLE) > 0; } + + + void Render(ID3_Writer&) const; + bool Parse(ID3_Reader&); + bool HasChanged() const; + +private: + size_t GetRawTextItemLen( size_t index =0 ) const; + +private: + // To prevent public instantiation, the constructor is made private + ID3_FieldImpl(); + ID3_FieldImpl(const ID3_FieldDef&); + + const ID3_FieldID _id; // the ID of this field + const ID3_FieldType _type; // what type is this field or should be + const ID3_V2Spec _spec_begin; // spec end + const ID3_V2Spec _spec_end; // spec begin + const flags_t _flags; // special field flags + mutable bool _changed; // field changed since last parse/render? + + dami::BString _binary; // for binary strings + dami::String _text; // for all strings + uint32 _integer; // for numbers + + const size_t _fixed_size; // for fixed length fields (0 if not) + size_t _num_items; // the number of items in the text string + ID3_TextEnc _enc; // encoding for text fields + + uint32 _start_position; +protected: + void SetInteger(uint32); + uint32 GetInteger() const; + + size_t SetBinary(dami::BString); + dami::BString GetBinary() const; + + void RenderInteger(ID3_Writer&) const; + void RenderText(ID3_Writer&) const; + void RenderBinary(ID3_Writer&) const; + + bool ParseInteger(ID3_Reader&); + bool ParseText(ID3_Reader&); + bool ParseBinary(ID3_Reader&); + +}; + + +// Ack! Not for public use +ID3_FrameDef *ID3_FindFrameDef(ID3_FrameID id); +ID3_FrameID ID3_FindFrameID(const char *id); + +#endif /* _ID3LIB_FIELD_H_ */ + |