mirror of
https://github.com/godotengine/godot.git
synced 2024-12-15 10:12:40 +08:00
213 lines
8.0 KiB
C++
213 lines
8.0 KiB
C++
// © 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
|