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
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#pragma once
#include <svtools/svtdllapi.h>
#include <tools/link.hxx>
#include <tools/ref.hxx>
#include <tools/long.hxx>
#include <rtl/textenc.h>
#include <rtl/ustrbuf.hxx>
#include <rtl/ustring.hxx>
#include <memory>
template<typename T> struct SvParser_Impl;
class SvStream;
enum class SvParserState
{
Accepted = 0,
NotStarted,
Working,
Pending,
Error
};
template<typename T>
class SVT_DLLPUBLIC SvParser : public SvRefBase
{
DECL_DLLPRIVATE_LINK( NewDataRead, LinkParamNone*, void );
protected:
SvStream& rInput;
OUStringBuffer aToken; // scanned token
sal_uInt32 nlLineNr; // current line number
sal_uInt32 nlLinePos; // current column number
std::unique_ptr<SvParser_Impl<T>> pImplData; // internal data
tools::Long m_nTokenIndex; // current token index to detect loops for seeking backwards
tools::Long nTokenValue; // additional value (RTF)
bool bTokenHasValue; // indicates whether nTokenValue is valid
SvParserState eState; // status also in derived classes
rtl_TextEncoding eSrcEnc; // Source encoding
sal_uInt64 nNextChPos;
sal_uInt32 nNextCh; // current character codepoint in UTF32 for the "lex"
bool bSwitchToUCS2 : 1; // switching is allowed
bool bRTF_InTextRead : 1; // only for RTF-Parser!!!
struct TokenStackType
{
OUString sToken;
tools::Long nTokenValue;
bool bTokenHasValue;
T nTokenId;
TokenStackType();
};
// methods for Token stack
T SkipToken( short nCnt = -1 ); // "skip" n Tokens back
TokenStackType* GetStackPtr( short nCnt );
// scan the next token:
// work off Token stack and call GetNextToken_() if necessary.
// That one is responsible for the recognition of new Tokens.
T GetNextToken();
virtual T GetNextToken_() = 0;
// is called for each Token that is recognized in CallParser
virtual void NextToken( T nToken ) = 0;
// at times of SvRefBase derivation, not everybody may delete
virtual ~SvParser() override;
void ClearTxtConvContext();
private:
std::unique_ptr<TokenStackType[]> pTokenStack;
TokenStackType *pTokenStackPos;
sal_uInt8 nTokenStackSize, nTokenStackPos;
public:
SvParser( SvStream& rIn, sal_uInt8 nStackSize = 3 );
virtual SvParserState CallParser() = 0; // calling of the parser
SvParserState GetStatus() const; // StatusInfo
sal_uInt32 GetLineNr() const;
sal_uInt32 GetLinePos() const;
void IncLineNr();
sal_uInt32 IncLinePos();
void SetLineNr( sal_uInt32 nlNum );
void SetLinePos( sal_uInt32 nlPos );
sal_uInt32 GetNextChar(); // Return next Unicode codepoint in UTF32.
void RereadLookahead();
bool IsParserWorking() const;
Link<LinkParamNone*,void> GetAsynchCallLink() const;
// for asynchronous reading from the SvStream
void SaveState( T nToken );
void RestoreState();
virtual void Continue( T nToken );
// Set/get source encoding. The UCS2BEncoding flag is valid if source
// encoding is UCS2. It specifies a big endian encoding.
void SetSrcEncoding( rtl_TextEncoding eSrcEnc );
rtl_TextEncoding GetSrcEncoding() const;
// May the character set be switched to UCS/2, if a BOM
// is in the first two characters of the stream?
void SetSwitchToUCS2( bool bSet );
bool IsSwitchToUCS2() const;
// how many bytes a character consists of
sal_uInt16 GetCharSize() const;
T GetSaveToken() const;
};
/*========================================================================
*
* SvKeyValue.
*
*======================================================================*/
class SvKeyValue
{
/** Representation.
*/
OUString m_aKey;
OUString m_aValue;
public:
/** Construction.
*/
SvKeyValue()
{}
SvKeyValue (const OUString &rKey, const OUString &rValue)
: m_aKey (rKey), m_aValue (rValue)
{}
SvKeyValue (const SvKeyValue &rOther)
: m_aKey (rOther.m_aKey), m_aValue (rOther.m_aValue)
{}
/** Assignment.
*/
SvKeyValue& operator= (SvKeyValue const &rOther)
{
m_aKey = rOther.m_aKey;
m_aValue = rOther.m_aValue;
return *this;
}
/** Operation.
*/
const OUString& GetKey() const { return m_aKey; }
const OUString& GetValue() const { return m_aValue; }
};
/*========================================================================
*
* SvKeyValueIterator.
*
*======================================================================*/
class SVT_DLLPUBLIC SvKeyValueIterator : public SvRefBase
{
struct Impl;
std::unique_ptr<Impl> mpImpl;
public:
/** Construction/Destruction.
*/
SvKeyValueIterator();
virtual ~SvKeyValueIterator() override;
SvKeyValueIterator(const SvKeyValueIterator&) = delete;
SvKeyValueIterator& operator=( const SvKeyValueIterator& ) = delete;
/** Operation.
*/
virtual bool GetFirst (SvKeyValue &rKeyVal);
virtual bool GetNext (SvKeyValue &rKeyVal);
virtual void Append (const SvKeyValue &rKeyVal);
};
typedef tools::SvRef<SvKeyValueIterator> SvKeyValueIteratorRef;
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
