1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
|
// -*- 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_ */
|
