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
|
// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
**********************************************************************
* Copyright (c) 2002-2011, International Business Machines
* Corporation and others. All Rights Reserved.
**********************************************************************
* Author: Alan Liu
* Created: October 30 2002
* Since: ICU 2.4
* 2010nov19 Markus Scherer Rewrite for formatVersion 2.
**********************************************************************
*/
#ifndef PROPNAME_H
#define PROPNAME_H
#include "unicode/utypes.h"
#include "unicode/bytestrie.h"
#include "unicode/uchar.h"
#include "udataswp.h"
#include "uprops.h"
/*
* This header defines the in-memory layout of the property names data
* structure representing the UCD data files PropertyAliases.txt and
* PropertyValueAliases.txt. It is used by:
* propname.cpp - reads data
* genpname - creates data
*/
/* low-level char * property name comparison -------------------------------- */
U_CDECL_BEGIN
/**
* \var uprv_comparePropertyNames
* Unicode property names and property value names are compared "loosely".
*
* UCD.html 4.0.1 says:
* For all property names, property value names, and for property values for
* Enumerated, Binary, or Catalog properties, use the following
* loose matching rule:
*
* LM3. Ignore case, whitespace, underscore ('_'), and hyphens.
*
* This function does just that, for (char *) name strings.
* It is almost identical to ucnv_compareNames() but also ignores
* C0 White_Space characters (U+0009..U+000d, and U+0085 on EBCDIC).
*
* @internal
*/
U_CAPI int32_t U_EXPORT2
uprv_compareASCIIPropertyNames(const char *name1, const char *name2);
U_CAPI int32_t U_EXPORT2
uprv_compareEBCDICPropertyNames(const char *name1, const char *name2);
#if U_CHARSET_FAMILY==U_ASCII_FAMILY
# define uprv_comparePropertyNames uprv_compareASCIIPropertyNames
#elif U_CHARSET_FAMILY==U_EBCDIC_FAMILY
# define uprv_comparePropertyNames uprv_compareEBCDICPropertyNames
#else
# error U_CHARSET_FAMILY is not valid
#endif
U_CDECL_END
/* UDataMemory structure and signatures ------------------------------------- */
#define PNAME_DATA_NAME "pnames"
#define PNAME_DATA_TYPE "icu"
/* Fields in UDataInfo: */
/* PNAME_SIG[] is encoded as numeric literals for compatibility with the HP compiler */
#define PNAME_SIG_0 ((uint8_t)0x70) /* p */
#define PNAME_SIG_1 ((uint8_t)0x6E) /* n */
#define PNAME_SIG_2 ((uint8_t)0x61) /* a */
#define PNAME_SIG_3 ((uint8_t)0x6D) /* m */
U_NAMESPACE_BEGIN
class PropNameData {
public:
enum {
// Byte offsets from the start of the data, after the generic header.
IX_VALUE_MAPS_OFFSET,
IX_BYTE_TRIES_OFFSET,
IX_NAME_GROUPS_OFFSET,
IX_RESERVED3_OFFSET,
IX_RESERVED4_OFFSET,
IX_TOTAL_SIZE,
// Other values.
IX_MAX_NAME_LENGTH,
IX_RESERVED7,
IX_COUNT
};
static const char *getPropertyName(int32_t property, int32_t nameChoice);
static const char *getPropertyValueName(int32_t property, int32_t value, int32_t nameChoice);
static int32_t getPropertyEnum(const char *alias);
static int32_t getPropertyValueEnum(int32_t property, const char *alias);
private:
static int32_t findProperty(int32_t property);
static int32_t findPropertyValueNameGroup(int32_t valueMapIndex, int32_t value);
static const char *getName(const char *nameGroup, int32_t nameIndex);
static UBool containsName(BytesTrie &trie, const char *name);
static int32_t getPropertyOrValueEnum(int32_t bytesTrieOffset, const char *alias);
static const int32_t indexes[];
static const int32_t valueMaps[];
static const uint8_t bytesTries[];
static const char nameGroups[];
};
/*
* pnames.icu formatVersion 2
*
* formatVersion 2 is new in ICU 4.8.
* In ICU 4.8, the pnames.icu data file is used only in ICU4J.
* ICU4C 4.8 has the same data structures hardcoded in source/common/propname_data.h.
*
* For documentation of pnames.icu formatVersion 1 see ICU4C 4.6 (2010-dec-01)
* or earlier versions of this header file (source/common/propname.h).
*
* The pnames.icu begins with the standard ICU DataHeader/UDataInfo.
* After that:
*
* int32_t indexes[8];
*
* (See the PropNameData::IX_... constants.)
*
* The first 6 indexes are byte offsets from the beginning of the data
* (beginning of indexes[]) to following structures.
* The length of each structure is the difference between its offset
* and the next one.
* All offsets are filled in: Where there is no data between two offsets,
* those two offsets are the same.
* The last offset (indexes[PropNameData::IX_TOTAL_SIZE]) indicates the
* total number of bytes in the file. (Not counting the standard headers.)
*
* The sixth index (indexes[PropNameData::IX_MAX_NAME_LENGTH]) has the
* maximum length of any Unicode property (or property value) alias.
* (Without normalization, that is, including underscores etc.)
*
* int32_t valueMaps[];
*
* The valueMaps[] begins with a map from UProperty enums to properties,
* followed by the per-property value maps from property values to names,
* for those properties that have named values.
* (Binary & enumerated, plus General_Category_Mask.)
*
* valueMaps[0] contains the number of UProperty enum ranges.
* For each range:
* int32_t start, limit -- first and last+1 UProperty enum of a dense range
* Followed by (limit-start) pairs of
* int32_t nameGroupOffset;
* Offset into nameGroups[] for the property's names/aliases.
* int32_t valueMapIndex;
* Offset of the property's value map in the valueMaps[] array.
* If the valueMapIndex is 0, then the property does not have named values.
*
* For each property's value map:
* int32_t bytesTrieOffset; -- Offset into bytesTries[] for name->value mapping.
* int32_t numRanges;
* If numRanges is in the range 1..15, then that many ranges of values follow.
* Per range:
* int32_t start, limit -- first and last+1 UProperty enum of a range
* Followed by (limit-start) entries of
* int32_t nameGroupOffset;
* Offset into nameGroups[] for the property value's names/aliases.
* If the nameGroupOffset is 0, then this is not a named value for this property.
* (That is, the ranges need not be dense.)
* If numRanges is >=0x10, then (numRanges-0x10) sorted values
* and then (numRanges-0x10) corresponding nameGroupOffsets follow.
* Values are sorted as signed integers.
* In this case, the set of values is dense; no nameGroupOffset will be 0.
*
* For both properties and property values, ranges are sorted by their start/limit values.
*
* uint8_t bytesTries[];
*
* This is a sequence of BytesTrie structures, byte-serialized tries for
* mapping from names/aliases to values.
* The first one maps from property names/aliases to UProperty enum constants.
* The following ones are indexed by property value map bytesTrieOffsets
* for mapping each property's names/aliases to their property values.
*
* char nameGroups[];
*
* This is a sequence of property name groups.
* Each group is a list of names/aliases (invariant-character strings) for
* one property or property value, in the order of UCharNameChoice.
* The first byte of each group is the number of names in the group.
* It is followed by that many NUL-terminated strings.
* The first string is for the short name; if there is no short name,
* then the first string is empty.
* The second string is the long name. Further strings are additional aliases.
*
* The first name group is for a property rather than a property value,
* so that a nameGroupOffset of 0 can be used to indicate "no value"
* in a property's sparse value ranges.
*/
U_NAMESPACE_END
#endif
|
