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140 lines
4.3 KiB
140 lines
4.3 KiB
// © 2016 and later: Unicode, Inc. and others.
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// License & terms of use: http://www.unicode.org/copyright.html
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/*
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*******************************************************************************
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*
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* Copyright (C) 1998-2014, International Business Machines
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* Corporation and others. All Rights Reserved.
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*
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*******************************************************************************
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*
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* Private implementation header for C collation
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* file name: ucol_imp.h
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* encoding: UTF-8
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* tab size: 8 (not used)
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* indentation:4
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*
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* created on: 2000dec11
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* created by: Vladimir Weinstein
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*
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* Modification history
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* Date Name Comments
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* 02/16/2001 synwee Added UCOL_GETPREVCE for the use in ucoleitr
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* 02/27/2001 synwee Added getMaxExpansion data structure in UCollator
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* 03/02/2001 synwee Added UCOL_IMPLICIT_CE
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* 03/12/2001 synwee Added pointer start to collIterate.
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*/
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#ifndef UCOL_IMP_H
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#define UCOL_IMP_H
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#include "unicode/utypes.h"
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#if !UCONFIG_NO_COLLATION
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// This part needs to compile as plain C code, for cintltst.
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#include "unicode/ucol.h"
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/** Check whether two collators are equal. Collators are considered equal if they
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* will sort strings the same. This means that both the current attributes and the
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* rules must be equivalent.
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* @param source first collator
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* @param target second collator
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* @return true or false
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* @internal ICU 3.0
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*/
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U_CAPI UBool U_EXPORT2
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ucol_equals(const UCollator *source, const UCollator *target);
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/**
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* Convenience string denoting the Collation data tree
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*/
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#define U_ICUDATA_COLL U_ICUDATA_NAME U_TREE_SEPARATOR_STRING "coll"
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#ifdef __cplusplus
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#include "unicode/locid.h"
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#include "unicode/ures.h"
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U_NAMESPACE_BEGIN
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struct CollationCacheEntry;
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class Locale;
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class UnicodeString;
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class UnifiedCache;
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/** Implemented in ucol_res.cpp. */
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class CollationLoader {
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public:
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static void appendRootRules(UnicodeString &s);
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static void loadRules(const char *localeID, const char *collationType,
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UnicodeString &rules, UErrorCode &errorCode);
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// Adds a reference to returned value.
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static const CollationCacheEntry *loadTailoring(const Locale &locale, UErrorCode &errorCode);
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// Cache callback. Adds a reference to returned value.
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const CollationCacheEntry *createCacheEntry(UErrorCode &errorCode);
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private:
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static void U_CALLCONV loadRootRules(UErrorCode &errorCode);
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// The following members are used by loadTailoring()
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// and the cache callback.
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static const uint32_t TRIED_SEARCH = 1;
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static const uint32_t TRIED_DEFAULT = 2;
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static const uint32_t TRIED_STANDARD = 4;
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CollationLoader(const CollationCacheEntry *re, const Locale &requested, UErrorCode &errorCode);
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~CollationLoader();
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// All loadFromXXX methods add a reference to the returned value.
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const CollationCacheEntry *loadFromLocale(UErrorCode &errorCode);
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const CollationCacheEntry *loadFromBundle(UErrorCode &errorCode);
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const CollationCacheEntry *loadFromCollations(UErrorCode &errorCode);
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const CollationCacheEntry *loadFromData(UErrorCode &errorCode);
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// Adds a reference to returned value.
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const CollationCacheEntry *getCacheEntry(UErrorCode &errorCode);
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/**
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* Returns the rootEntry (with one addRef()) if loc==root,
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* or else returns a new cache entry with ref count 1 for the loc and
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* the root tailoring.
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*/
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const CollationCacheEntry *makeCacheEntryFromRoot(
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const Locale &loc, UErrorCode &errorCode) const;
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/**
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* Returns the entryFromCache as is if loc==validLocale,
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* or else returns a new cache entry with ref count 1 for the loc and
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* the same tailoring. In the latter case, a ref count is removed from
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* entryFromCache.
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*/
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static const CollationCacheEntry *makeCacheEntry(
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const Locale &loc,
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const CollationCacheEntry *entryFromCache,
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UErrorCode &errorCode);
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const UnifiedCache *cache;
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const CollationCacheEntry *rootEntry;
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Locale validLocale;
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Locale locale;
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char type[16];
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char defaultType[16];
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uint32_t typesTried;
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UBool typeFallback;
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UResourceBundle *bundle;
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UResourceBundle *collations;
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UResourceBundle *data;
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};
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U_NAMESPACE_END
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#endif /* __cplusplus */
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#endif /* #if !UCONFIG_NO_COLLATION */
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#endif
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