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
|
/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef COMMON_TOKENIZER_H
#define COMMON_TOKENIZER_H
#include "common/scummsys.h"
#include "common/str-array.h"
namespace Common {
/**
* @defgroup common_tokenizer String tokenizer
* @ingroup common
*
* @brief String tokenizer for creating tokens out of parts of a string.
*
* @{
*/
/**
* A simple non-optimized string tokenizer.
*
* Example of use:
* StringTokenizer("Now, this is a test!", " ,!") gives tokens "Now", "this", "is", "a" and "test" using nextToken().
*/
class StringTokenizer {
public:
/**
* Creates a StringTokenizer.
* @param str The string to be tokenized.
* @param delimiters String containing all the delimiter characters (i.e. the characters to be ignored).
* @note Uses space, horizontal tab, carriage return, newline, form feed and vertical tab as delimiters by default.
*/
StringTokenizer(const String &str, const String &delimiters = " \t\r\n\f\v");
void reset(); ///< Resets the tokenizer to its initial state
bool empty() const; ///< Returns true if there are no more tokens left in the string, false otherwise
String nextToken(); ///< Returns the next token from the string (Or an empty string if there are no more tokens)
StringArray split(); ///< Returns StringArray with all tokens. Beware of the memory usage
String delimitersAtTokenBegin() const; ///< Returns a String with all delimiters between the current and previous token
String delimitersAtTokenEnd() const; ///< Returns a String with all delimiters between the current and next token
private:
const String _str; ///< The string to be tokenized
const String _delimiters; ///< String containing all the delimiter characters
uint _tokenBegin; ///< Latest found token's begin (Valid after a call to nextToken(), zero otherwise)
uint _tokenEnd; ///< Latest found token's end (Valid after a call to nextToken(), zero otherwise)
};
/**
* A simple non-optimized unicode-string tokenizer.
*
* Example of use:
* U32StringTokenizer("Now, this is a test!", " ,!") gives tokens "Now", "this", "is", "a" and "test" using nextToken().
* Using non-ascii chars will also work, and is recommended to use this over StringTokenizer if string contains unicode chars.
*/
class U32StringTokenizer {
public:
/**
* Creates a UnicodeStringTokenizer.
* @param str The unicode string to be tokenized.
* @param delimiters String containing all the delimiter characters (i.e. the characters to be ignored).
* @note Uses space, horizontal tab, carriage return, newline, form feed and vertical tab as delimiters by default.
*/
U32StringTokenizer(const U32String &str, const String &delimiters = " \t\r\n\f\v");
void reset(); ///< Resets the tokenizer to its initial state, i.e points boten token iterators to the beginning
bool empty() const; ///< Returns true if there are no more tokens left in the string, false otherwise
U32String nextToken(); ///< Returns the next token from the string (Or an empty string if there are no more tokens)
U32StringArray split(); ///< Returns StringArray with all tokens. Beware of the memory usage
U32String delimitersAtTokenBegin() const; ///< Returns a U32String with all delimiters between the current and previous token
U32String delimitersAtTokenEnd() const; ///< Returns a U32String with all delimiters between the current and next token
private:
const U32String _str; ///< The unicode string to be tokenized
const String _delimiters; ///< String containing all the delimiter characters
U32String::const_iterator _tokenBegin; ///< Latest found token's begin iterator (Valid after a call to nextToken())
U32String::const_iterator _tokenEnd; ///< Latest found token's end iterator (Valid after a call to nextToken())
};
/** @} */
} // End of namespace Common
#endif
|
