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
|
// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
******************************************************************************
* Copyright (C) 1997-2010, International Business Machines
* Corporation and others. All Rights Reserved.
******************************************************************************
* Date Name Description
* 06/23/00 aliu Creation.
******************************************************************************
*/
#ifndef __UREP_H
#define __UREP_H
#include "unicode/utypes.h"
U_CDECL_BEGIN
/********************************************************************
* General Notes
********************************************************************
* TODO
* Add usage scenario
* Add test code
* Talk about pinning
* Talk about "can truncate result if out of memory"
*/
/********************************************************************
* Data Structures
********************************************************************/
/**
* \file
* \brief C API: Callbacks for UReplaceable
*/
/**
* An opaque replaceable text object. This will be manipulated only
* through the caller-supplied UReplaceableFunctor struct. Related
* to the C++ class Replaceable.
* This is currently only used in the Transliterator C API, see utrans.h .
* @stable ICU 2.0
*/
typedef void* UReplaceable;
/**
* A set of function pointers that transliterators use to manipulate a
* UReplaceable. The caller should supply the required functions to
* manipulate their text appropriately. Related to the C++ class
* Replaceable.
* @stable ICU 2.0
*/
typedef struct UReplaceableCallbacks {
/**
* Function pointer that returns the number of UChar code units in
* this text.
*
* @param rep A pointer to "this" UReplaceable object.
* @return The length of the text.
* @stable ICU 2.0
*/
int32_t (*length)(const UReplaceable* rep);
/**
* Function pointer that returns a UChar code units at the given
* offset into this text; 0 <= offset < n, where n is the value
* returned by (*length)(rep). See unistr.h for a description of
* charAt() vs. char32At().
*
* @param rep A pointer to "this" UReplaceable object.
* @param offset The index at which to fetch the UChar (code unit).
* @return The UChar (code unit) at offset, or U+FFFF if the offset is out of bounds.
* @stable ICU 2.0
*/
UChar (*charAt)(const UReplaceable* rep,
int32_t offset);
/**
* Function pointer that returns a UChar32 code point at the given
* offset into this text. See unistr.h for a description of
* charAt() vs. char32At().
*
* @param rep A pointer to "this" UReplaceable object.
* @param offset The index at which to fetch the UChar32 (code point).
* @return The UChar32 (code point) at offset, or U+FFFF if the offset is out of bounds.
* @stable ICU 2.0
*/
UChar32 (*char32At)(const UReplaceable* rep,
int32_t offset);
/**
* Function pointer that replaces text between start and limit in
* this text with the given text. Attributes (out of band info)
* should be retained.
*
* @param rep A pointer to "this" UReplaceable object.
* @param start the starting index of the text to be replaced,
* inclusive.
* @param limit the ending index of the text to be replaced,
* exclusive.
* @param text the new text to replace the UChars from
* start..limit-1.
* @param textLength the number of UChars at text, or -1 if text
* is null-terminated.
* @stable ICU 2.0
*/
void (*replace)(UReplaceable* rep,
int32_t start,
int32_t limit,
const UChar* text,
int32_t textLength);
/**
* Function pointer that copies the characters in the range
* [<tt>start</tt>, <tt>limit</tt>) into the array <tt>dst</tt>.
*
* @param rep A pointer to "this" UReplaceable object.
* @param start offset of first character which will be copied
* into the array
* @param limit offset immediately following the last character to
* be copied
* @param dst array in which to copy characters. The length of
* <tt>dst</tt> must be at least <tt>(limit - start)</tt>.
* @stable ICU 2.1
*/
void (*extract)(UReplaceable* rep,
int32_t start,
int32_t limit,
UChar* dst);
/**
* Function pointer that copies text between start and limit in
* this text to another index in the text. Attributes (out of
* band info) should be retained. After this call, there will be
* (at least) two copies of the characters originally located at
* start..limit-1.
*
* @param rep A pointer to "this" UReplaceable object.
* @param start the starting index of the text to be copied,
* inclusive.
* @param limit the ending index of the text to be copied,
* exclusive.
* @param dest the index at which the copy of the UChars should be
* inserted.
* @stable ICU 2.0
*/
void (*copy)(UReplaceable* rep,
int32_t start,
int32_t limit,
int32_t dest);
} UReplaceableCallbacks;
U_CDECL_END
#endif
|