blob: 555c04b204a72c42b0fa7918df3fd0933034330e (
plain)
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
|
// -*- C++ -*-
//=============================================================================
/**
* @file CharStream.h
*
* @author Nanbor Wang <nanbor@cs.wustl.edu>
*/
//=============================================================================
#ifndef _ACEXML_CHARSTREAM_H_
#define _ACEXML_CHARSTREAM_H_
#include /**/ "ace/pre.h"
#include "ACEXML/common/ACEXML_Export.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
#pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "ACEXML/common/XML_Types.h"
/**
* @class ACEXML_CharStream
*
* ACEXML_CharStream is an abstract class (interface) which defines the
* basic opertions a parser could use to retrieve XML charater sequence.
* The sequence can be read from a file or a character buffer.
*/
class ACEXML_Export ACEXML_CharStream
{
public:
/**
* Virtual destructor, must have.
*/
virtual ~ACEXML_CharStream () = 0;
/**
* Returns the available ACEXML_Char in the buffer. -1
* if the object is not initialized properly.
*/
virtual int available () = 0;
/**
* Close this stream and release all resources used by it.
*/
virtual int close () = 0;
/**
* Read the next ACEXML_Char. Return -1 if we are not able to
* return an ACEXML_Char, 0 if EOS is reached, or 1 if succeed.
*/
virtual int get (ACEXML_Char& ch) = 0;
/**
* Read the next batch of ACEXML_Char strings
*/
virtual int read (ACEXML_Char *str, size_t len) = 0;
/**
* Peek the next ACEXML_Char in the CharStream. Return the
* character if succeess, -1 if EOS is reached.
*/
virtual int peek () = 0;
/**
* Resets the pointer to the beginning of the stream.
*/
virtual void rewind () = 0;
/*
* Get the character encoding for a byte stream or URI.
*/
virtual const ACEXML_Char *getEncoding () = 0;
/*
* Get the systemId for the underlying CharStream
*/
virtual const ACEXML_Char* getSystemId () = 0;
};
#include /**/ "ace/post.h"
#endif /* _ACEXML_CHARSTREAM_H_ */
|
