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authorJonathan Kew <jfkthame@googlemail.com>2008-03-04 13:26:36 +0000
committerJonathan Kew <jfkthame@googlemail.com>2008-03-04 13:26:36 +0000
commit53790d2a0c50915d8cec71df3e89cd24d887b2fe (patch)
tree16f6b4df067eb3c2024e0a7735cb7ccea86b3aba /Build/source/libs/icu-xetex/i18n/unicode/ucol.h
parentf483a5de9331a257f597282e611ecfb63f5ab118 (diff)
update icu-xetex to 3.8.1-based code from xetex repository
git-svn-id: svn://tug.org/texlive/trunk@6842 c570f23f-e606-0410-a88d-b1316a301751
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+/*
+*******************************************************************************
+* Copyright (c) 1996-2007, International Business Machines Corporation and others.
+* All Rights Reserved.
+*******************************************************************************
+*/
+
+#ifndef UCOL_H
+#define UCOL_H
+
+#include "unicode/utypes.h"
+
+#if !UCONFIG_NO_COLLATION
+
+#include "unicode/unorm.h"
+#include "unicode/parseerr.h"
+#include "unicode/uloc.h"
+#include "unicode/uset.h"
+
+/**
+ * \file
+ * \brief C API: Collator
+ *
+ * <h2> Collator C API </h2>
+ *
+ * The C API for Collator performs locale-sensitive
+ * string comparison. You use this service to build
+ * searching and sorting routines for natural language text.
+ * <em>Important: </em>The ICU collation service has been reimplemented
+ * in order to achieve better performance and UCA compliance.
+ * For details, see the
+ * <a href="http://source.icu-project.org/repos/icu/icuhtml/trunk/design/collation/ICU_collation_design.htm">
+ * collation design document</a>.
+ * <p>
+ * For more information about the collation service see
+ * <a href="http://icu-project.org/userguide/Collate_Intro.html">the users guide</a>.
+ * <p>
+ * Collation service provides correct sorting orders for most locales supported in ICU.
+ * If specific data for a locale is not available, the orders eventually falls back
+ * to the <a href="http://www.unicode.org/unicode/reports/tr10/">UCA sort order</a>.
+ * <p>
+ * Sort ordering may be customized by providing your own set of rules. For more on
+ * this subject see the
+ * <a href="http://icu-project.org/userguide/Collate_Customization.html">
+ * Collation customization</a> section of the users guide.
+ * <p>
+ * @see UCollationResult
+ * @see UNormalizationMode
+ * @see UCollationStrength
+ * @see UCollationElements
+ */
+
+/** A collator.
+* For usage in C programs.
+*/
+struct UCollator;
+/** structure representing a collator object instance
+ * @stable ICU 2.0
+ */
+typedef struct UCollator UCollator;
+
+
+/**
+ * UCOL_LESS is returned if source string is compared to be less than target
+ * string in the u_strcoll() method.
+ * UCOL_EQUAL is returned if source string is compared to be equal to target
+ * string in the u_strcoll() method.
+ * UCOL_GREATER is returned if source string is compared to be greater than
+ * target string in the u_strcoll() method.
+ * @see u_strcoll()
+ * <p>
+ * Possible values for a comparison result
+ * @stable ICU 2.0
+ */
+typedef enum {
+ /** string a == string b */
+ UCOL_EQUAL = 0,
+ /** string a > string b */
+ UCOL_GREATER = 1,
+ /** string a < string b */
+ UCOL_LESS = -1
+} UCollationResult ;
+
+
+/** Enum containing attribute values for controling collation behavior.
+ * Here are all the allowable values. Not every attribute can take every value. The only
+ * universal value is UCOL_DEFAULT, which resets the attribute value to the predefined
+ * value for that locale
+ * @stable ICU 2.0
+ */
+typedef enum {
+ /** accepted by most attributes */
+ UCOL_DEFAULT = -1,
+
+ /** Primary collation strength */
+ UCOL_PRIMARY = 0,
+ /** Secondary collation strength */
+ UCOL_SECONDARY = 1,
+ /** Tertiary collation strength */
+ UCOL_TERTIARY = 2,
+ /** Default collation strength */
+ UCOL_DEFAULT_STRENGTH = UCOL_TERTIARY,
+ UCOL_CE_STRENGTH_LIMIT,
+ /** Quaternary collation strength */
+ UCOL_QUATERNARY=3,
+ /** Identical collation strength */
+ UCOL_IDENTICAL=15,
+ UCOL_STRENGTH_LIMIT,
+
+ /** Turn the feature off - works for UCOL_FRENCH_COLLATION,
+ UCOL_CASE_LEVEL, UCOL_HIRAGANA_QUATERNARY_MODE
+ & UCOL_DECOMPOSITION_MODE*/
+ UCOL_OFF = 16,
+ /** Turn the feature on - works for UCOL_FRENCH_COLLATION,
+ UCOL_CASE_LEVEL, UCOL_HIRAGANA_QUATERNARY_MODE
+ & UCOL_DECOMPOSITION_MODE*/
+ UCOL_ON = 17,
+
+ /** Valid for UCOL_ALTERNATE_HANDLING. Alternate handling will be shifted */
+ UCOL_SHIFTED = 20,
+ /** Valid for UCOL_ALTERNATE_HANDLING. Alternate handling will be non ignorable */
+ UCOL_NON_IGNORABLE = 21,
+
+ /** Valid for UCOL_CASE_FIRST -
+ lower case sorts before upper case */
+ UCOL_LOWER_FIRST = 24,
+ /** upper case sorts before lower case */
+ UCOL_UPPER_FIRST = 25,
+
+ UCOL_ATTRIBUTE_VALUE_COUNT
+
+} UColAttributeValue;
+
+/**
+ * Base letter represents a primary difference. Set comparison
+ * level to UCOL_PRIMARY to ignore secondary and tertiary differences.
+ * Use this to set the strength of a Collator object.
+ * Example of primary difference, "abc" &lt; "abd"
+ *
+ * Diacritical differences on the same base letter represent a secondary
+ * difference. Set comparison level to UCOL_SECONDARY to ignore tertiary
+ * differences. Use this to set the strength of a Collator object.
+ * Example of secondary difference, "&auml;" >> "a".
+ *
+ * Uppercase and lowercase versions of the same character represents a
+ * tertiary difference. Set comparison level to UCOL_TERTIARY to include
+ * all comparison differences. Use this to set the strength of a Collator
+ * object.
+ * Example of tertiary difference, "abc" &lt;&lt;&lt; "ABC".
+ *
+ * Two characters are considered "identical" when they have the same
+ * unicode spellings. UCOL_IDENTICAL.
+ * For example, "&auml;" == "&auml;".
+ *
+ * UCollationStrength is also used to determine the strength of sort keys
+ * generated from UCollator objects
+ * These values can be now found in the UColAttributeValue enum.
+ * @stable ICU 2.0
+ **/
+typedef UColAttributeValue UCollationStrength;
+
+/** Attributes that collation service understands. All the attributes can take UCOL_DEFAULT
+ * value, as well as the values specific to each one.
+ * @stable ICU 2.0
+ */
+typedef enum {
+ /** Attribute for direction of secondary weights - used in French.
+ * Acceptable values are UCOL_ON, which results in secondary weights
+ * being considered backwards and UCOL_OFF which treats secondary
+ * weights in the order they appear.*/
+ UCOL_FRENCH_COLLATION,
+ /** Attribute for handling variable elements.
+ * Acceptable values are UCOL_NON_IGNORABLE (default)
+ * which treats all the codepoints with non-ignorable
+ * primary weights in the same way,
+ * and UCOL_SHIFTED which causes codepoints with primary
+ * weights that are equal or below the variable top value
+ * to be ignored on primary level and moved to the quaternary
+ * level.*/
+ UCOL_ALTERNATE_HANDLING,
+ /** Controls the ordering of upper and lower case letters.
+ * Acceptable values are UCOL_OFF (default), which orders
+ * upper and lower case letters in accordance to their tertiary
+ * weights, UCOL_UPPER_FIRST which forces upper case letters to
+ * sort before lower case letters, and UCOL_LOWER_FIRST which does
+ * the opposite. */
+ UCOL_CASE_FIRST,
+ /** Controls whether an extra case level (positioned before the third
+ * level) is generated or not. Acceptable values are UCOL_OFF (default),
+ * when case level is not generated, and UCOL_ON which causes the case
+ * level to be generated. Contents of the case level are affected by
+ * the value of UCOL_CASE_FIRST attribute. A simple way to ignore
+ * accent differences in a string is to set the strength to UCOL_PRIMARY
+ * and enable case level. */
+ UCOL_CASE_LEVEL,
+ /** Controls whether the normalization check and necessary normalizations
+ * are performed. When set to UCOL_OFF (default) no normalization check
+ * is performed. The correctness of the result is guaranteed only if the
+ * input data is in so-called FCD form (see users manual for more info).
+ * When set to UCOL_ON, an incremental check is performed to see whether
+ * the input data is in the FCD form. If the data is not in the FCD form,
+ * incremental NFD normalization is performed. */
+ UCOL_NORMALIZATION_MODE,
+ /** An alias for UCOL_NORMALIZATION_MODE attribute */
+ UCOL_DECOMPOSITION_MODE = UCOL_NORMALIZATION_MODE,
+ /** The strength attribute. Can be either UCOL_PRIMARY, UCOL_SECONDARY,
+ * UCOL_TERTIARY, UCOL_QUATERNARY or UCOL_IDENTICAL. The usual strength
+ * for most locales (except Japanese) is tertiary. Quaternary strength
+ * is useful when combined with shifted setting for alternate handling
+ * attribute and for JIS x 4061 collation, when it is used to distinguish
+ * between Katakana and Hiragana (this is achieved by setting the
+ * UCOL_HIRAGANA_QUATERNARY mode to on. Otherwise, quaternary level
+ * is affected only by the number of non ignorable code points in
+ * the string. Identical strength is rarely useful, as it amounts
+ * to codepoints of the NFD form of the string. */
+ UCOL_STRENGTH,
+ /** When turned on, this attribute positions Hiragana before all
+ * non-ignorables on quaternary level This is a sneaky way to produce JIS
+ * sort order */
+ UCOL_HIRAGANA_QUATERNARY_MODE,
+ /** When turned on, this attribute generates a collation key
+ * for the numeric value of substrings of digits.
+ * This is a way to get '100' to sort AFTER '2'. */
+ UCOL_NUMERIC_COLLATION,
+ UCOL_ATTRIBUTE_COUNT
+} UColAttribute;
+
+/** Options for retrieving the rule string
+ * @stable ICU 2.0
+ */
+typedef enum {
+ /** Retrieve tailoring only */
+ UCOL_TAILORING_ONLY,
+ /** Retrieve UCA rules and tailoring */
+ UCOL_FULL_RULES
+} UColRuleOption ;
+
+/**
+ * Open a UCollator for comparing strings.
+ * The UCollator pointer is used in all the calls to the Collation
+ * service. After finished, collator must be disposed of by calling
+ * {@link #ucol_close }.
+ * @param loc The locale containing the required collation rules.
+ * Special values for locales can be passed in -
+ * if NULL is passed for the locale, the default locale
+ * collation rules will be used. If empty string ("") or
+ * "root" are passed, UCA rules will be used.
+ * @param status A pointer to an UErrorCode to receive any errors
+ * @return A pointer to a UCollator, or 0 if an error occurred.
+ * @see ucol_openRules
+ * @see ucol_safeClone
+ * @see ucol_close
+ * @stable ICU 2.0
+ */
+U_STABLE UCollator* U_EXPORT2
+ucol_open(const char *loc, UErrorCode *status);
+
+/**
+ * Produce an UCollator instance according to the rules supplied.
+ * The rules are used to change the default ordering, defined in the
+ * UCA in a process called tailoring. The resulting UCollator pointer
+ * can be used in the same way as the one obtained by {@link #ucol_strcoll }.
+ * @param rules A string describing the collation rules. For the syntax
+ * of the rules please see users guide.
+ * @param rulesLength The length of rules, or -1 if null-terminated.
+ * @param normalizationMode The normalization mode: One of
+ * UCOL_OFF (expect the text to not need normalization),
+ * UCOL_ON (normalize), or
+ * UCOL_DEFAULT (set the mode according to the rules)
+ * @param strength The default collation strength; one of UCOL_PRIMARY, UCOL_SECONDARY,
+ * UCOL_TERTIARY, UCOL_IDENTICAL,UCOL_DEFAULT_STRENGTH - can be also set in the rules.
+ * @param parseError A pointer to UParseError to recieve information about errors
+ * occurred during parsing. This argument can currently be set
+ * to NULL, but at users own risk. Please provide a real structure.
+ * @param status A pointer to an UErrorCode to receive any errors
+ * @return A pointer to a UCollator. It is not guaranteed that NULL be returned in case
+ * of error - please use status argument to check for errors.
+ * @see ucol_open
+ * @see ucol_safeClone
+ * @see ucol_close
+ * @stable ICU 2.0
+ */
+U_STABLE UCollator* U_EXPORT2
+ucol_openRules( const UChar *rules,
+ int32_t rulesLength,
+ UColAttributeValue normalizationMode,
+ UCollationStrength strength,
+ UParseError *parseError,
+ UErrorCode *status);
+
+/**
+ * Open a collator defined by a short form string.
+ * The structure and the syntax of the string is defined in the "Naming collators"
+ * section of the users guide:
+ * http://icu-project.org/userguide/Collate_Concepts.html#Naming_Collators
+ * Attributes are overriden by the subsequent attributes. So, for "S2_S3", final
+ * strength will be 3. 3066bis locale overrides individual locale parts.
+ * The call to this function is equivalent to a call to ucol_open, followed by a
+ * series of calls to ucol_setAttribute and ucol_setVariableTop.
+ * @param definition A short string containing a locale and a set of attributes.
+ * Attributes not explicitly mentioned are left at the default
+ * state for a locale.
+ * @param parseError if not NULL, structure that will get filled with error's pre
+ * and post context in case of error.
+ * @param forceDefaults if FALSE, the settings that are the same as the collator
+ * default settings will not be applied (for example, setting
+ * French secondary on a French collator would not be executed).
+ * If TRUE, all the settings will be applied regardless of the
+ * collator default value. If the definition
+ * strings are to be cached, should be set to FALSE.
+ * @param status Error code. Apart from regular error conditions connected to
+ * instantiating collators (like out of memory or similar), this
+ * API will return an error if an invalid attribute or attribute/value
+ * combination is specified.
+ * @return A pointer to a UCollator or 0 if an error occured (including an
+ * invalid attribute).
+ * @see ucol_open
+ * @see ucol_setAttribute
+ * @see ucol_setVariableTop
+ * @see ucol_getShortDefinitionString
+ * @see ucol_normalizeShortDefinitionString
+ * @stable ICU 3.0
+ *
+ */
+U_STABLE UCollator* U_EXPORT2
+ucol_openFromShortString( const char *definition,
+ UBool forceDefaults,
+ UParseError *parseError,
+ UErrorCode *status);
+
+/**
+ * Get a set containing the contractions defined by the collator. The set includes
+ * both the UCA contractions and the contractions defined by the collator. This set
+ * will contain only strings. If a tailoring explicitly suppresses contractions from
+ * the UCA (like Russian), removed contractions will not be in the resulting set.
+ * @param coll collator
+ * @param conts the set to hold the result. It gets emptied before
+ * contractions are added.
+ * @param status to hold the error code
+ * @return the size of the contraction set
+ *
+ * @deprecated ICU 3.4, use ucol_getContractionsAndExpansions instead
+ */
+U_DEPRECATED int32_t U_EXPORT2
+ucol_getContractions( const UCollator *coll,
+ USet *conts,
+ UErrorCode *status);
+
+/**
+ * Get a set containing the expansions defined by the collator. The set includes
+ * both the UCA expansions and the expansions defined by the tailoring
+ * @param coll collator
+ * @param contractions if not NULL, the set to hold the contractions
+ * @param expansions if not NULL, the set to hold the expansions
+ * @param addPrefixes add the prefix contextual elements to contractions
+ * @param status to hold the error code
+ *
+ * @stable ICU 3.4
+ */
+U_STABLE void U_EXPORT2
+ucol_getContractionsAndExpansions( const UCollator *coll,
+ USet *contractions, USet *expansions,
+ UBool addPrefixes, UErrorCode *status);
+
+/**
+ * Close a UCollator.
+ * Once closed, a UCollator should not be used. Every open collator should
+ * be closed. Otherwise, a memory leak will result.
+ * @param coll The UCollator to close.
+ * @see ucol_open
+ * @see ucol_openRules
+ * @see ucol_safeClone
+ * @stable ICU 2.0
+ */
+U_STABLE void U_EXPORT2
+ucol_close(UCollator *coll);
+
+/**
+ * Compare two strings.
+ * The strings will be compared using the options already specified.
+ * @param coll The UCollator containing the comparison rules.
+ * @param source The source string.
+ * @param sourceLength The length of source, or -1 if null-terminated.
+ * @param target The target string.
+ * @param targetLength The length of target, or -1 if null-terminated.
+ * @return The result of comparing the strings; one of UCOL_EQUAL,
+ * UCOL_GREATER, UCOL_LESS
+ * @see ucol_greater
+ * @see ucol_greaterOrEqual
+ * @see ucol_equal
+ * @stable ICU 2.0
+ */
+U_STABLE UCollationResult U_EXPORT2
+ucol_strcoll( const UCollator *coll,
+ const UChar *source,
+ int32_t sourceLength,
+ const UChar *target,
+ int32_t targetLength);
+
+/**
+ * Determine if one string is greater than another.
+ * This function is equivalent to {@link #ucol_strcoll } == UCOL_GREATER
+ * @param coll The UCollator containing the comparison rules.
+ * @param source The source string.
+ * @param sourceLength The length of source, or -1 if null-terminated.
+ * @param target The target string.
+ * @param targetLength The length of target, or -1 if null-terminated.
+ * @return TRUE if source is greater than target, FALSE otherwise.
+ * @see ucol_strcoll
+ * @see ucol_greaterOrEqual
+ * @see ucol_equal
+ * @stable ICU 2.0
+ */
+U_STABLE UBool U_EXPORT2
+ucol_greater(const UCollator *coll,
+ const UChar *source, int32_t sourceLength,
+ const UChar *target, int32_t targetLength);
+
+/**
+ * Determine if one string is greater than or equal to another.
+ * This function is equivalent to {@link #ucol_strcoll } != UCOL_LESS
+ * @param coll The UCollator containing the comparison rules.
+ * @param source The source string.
+ * @param sourceLength The length of source, or -1 if null-terminated.
+ * @param target The target string.
+ * @param targetLength The length of target, or -1 if null-terminated.
+ * @return TRUE if source is greater than or equal to target, FALSE otherwise.
+ * @see ucol_strcoll
+ * @see ucol_greater
+ * @see ucol_equal
+ * @stable ICU 2.0
+ */
+U_STABLE UBool U_EXPORT2
+ucol_greaterOrEqual(const UCollator *coll,
+ const UChar *source, int32_t sourceLength,
+ const UChar *target, int32_t targetLength);
+
+/**
+ * Compare two strings for equality.
+ * This function is equivalent to {@link #ucol_strcoll } == UCOL_EQUAL
+ * @param coll The UCollator containing the comparison rules.
+ * @param source The source string.
+ * @param sourceLength The length of source, or -1 if null-terminated.
+ * @param target The target string.
+ * @param targetLength The length of target, or -1 if null-terminated.
+ * @return TRUE if source is equal to target, FALSE otherwise
+ * @see ucol_strcoll
+ * @see ucol_greater
+ * @see ucol_greaterOrEqual
+ * @stable ICU 2.0
+ */
+U_STABLE UBool U_EXPORT2
+ucol_equal(const UCollator *coll,
+ const UChar *source, int32_t sourceLength,
+ const UChar *target, int32_t targetLength);
+
+/**
+ * Compare two UTF-8 encoded trings.
+ * The strings will be compared using the options already specified.
+ * @param coll The UCollator containing the comparison rules.
+ * @param sIter The source string iterator.
+ * @param tIter The target string iterator.
+ * @return The result of comparing the strings; one of UCOL_EQUAL,
+ * UCOL_GREATER, UCOL_LESS
+ * @param status A pointer to an UErrorCode to receive any errors
+ * @see ucol_strcoll
+ * @stable ICU 2.6
+ */
+U_STABLE UCollationResult U_EXPORT2
+ucol_strcollIter( const UCollator *coll,
+ UCharIterator *sIter,
+ UCharIterator *tIter,
+ UErrorCode *status);
+
+/**
+ * Get the collation strength used in a UCollator.
+ * The strength influences how strings are compared.
+ * @param coll The UCollator to query.
+ * @return The collation strength; one of UCOL_PRIMARY, UCOL_SECONDARY,
+ * UCOL_TERTIARY, UCOL_QUATERNARY, UCOL_IDENTICAL
+ * @see ucol_setStrength
+ * @stable ICU 2.0
+ */
+U_STABLE UCollationStrength U_EXPORT2
+ucol_getStrength(const UCollator *coll);
+
+/**
+ * Set the collation strength used in a UCollator.
+ * The strength influences how strings are compared.
+ * @param coll The UCollator to set.
+ * @param strength The desired collation strength; one of UCOL_PRIMARY,
+ * UCOL_SECONDARY, UCOL_TERTIARY, UCOL_QUATERNARY, UCOL_IDENTICAL, UCOL_DEFAULT
+ * @see ucol_getStrength
+ * @stable ICU 2.0
+ */
+U_STABLE void U_EXPORT2
+ucol_setStrength(UCollator *coll,
+ UCollationStrength strength);
+
+/**
+ * Get the display name for a UCollator.
+ * The display name is suitable for presentation to a user.
+ * @param objLoc The locale of the collator in question.
+ * @param dispLoc The locale for display.
+ * @param result A pointer to a buffer to receive the attribute.
+ * @param resultLength The maximum size of result.
+ * @param status A pointer to an UErrorCode to receive any errors
+ * @return The total buffer size needed; if greater than resultLength,
+ * the output was truncated.
+ * @stable ICU 2.0
+ */
+U_STABLE int32_t U_EXPORT2
+ucol_getDisplayName( const char *objLoc,
+ const char *dispLoc,
+ UChar *result,
+ int32_t resultLength,
+ UErrorCode *status);
+
+/**
+ * Get a locale for which collation rules are available.
+ * A UCollator in a locale returned by this function will perform the correct
+ * collation for the locale.
+ * @param index The index of the desired locale.
+ * @return A locale for which collation rules are available, or 0 if none.
+ * @see ucol_countAvailable
+ * @stable ICU 2.0
+ */
+U_STABLE const char* U_EXPORT2
+ucol_getAvailable(int32_t index);
+
+/**
+ * Determine how many locales have collation rules available.
+ * This function is most useful as determining the loop ending condition for
+ * calls to {@link #ucol_getAvailable }.
+ * @return The number of locales for which collation rules are available.
+ * @see ucol_getAvailable
+ * @stable ICU 2.0
+ */
+U_STABLE int32_t U_EXPORT2
+ucol_countAvailable(void);
+
+#if !UCONFIG_NO_SERVICE
+/**
+ * Create a string enumerator of all locales for which a valid
+ * collator may be opened.
+ * @param status input-output error code
+ * @return a string enumeration over locale strings. The caller is
+ * responsible for closing the result.
+ * @stable ICU 3.0
+ */
+U_STABLE UEnumeration* U_EXPORT2
+ucol_openAvailableLocales(UErrorCode *status);
+#endif
+
+/**
+ * Create a string enumerator of all possible keywords that are relevant to
+ * collation. At this point, the only recognized keyword for this
+ * service is "collation".
+ * @param status input-output error code
+ * @return a string enumeration over locale strings. The caller is
+ * responsible for closing the result.
+ * @stable ICU 3.0
+ */
+U_STABLE UEnumeration* U_EXPORT2
+ucol_getKeywords(UErrorCode *status);
+
+/**
+ * Given a keyword, create a string enumeration of all values
+ * for that keyword that are currently in use.
+ * @param keyword a particular keyword as enumerated by
+ * ucol_getKeywords. If any other keyword is passed in, *status is set
+ * to U_ILLEGAL_ARGUMENT_ERROR.
+ * @param status input-output error code
+ * @return a string enumeration over collation keyword values, or NULL
+ * upon error. The caller is responsible for closing the result.
+ * @stable ICU 3.0
+ */
+U_STABLE UEnumeration* U_EXPORT2
+ucol_getKeywordValues(const char *keyword, UErrorCode *status);
+
+/**
+ * Return the functionally equivalent locale for the given
+ * requested locale, with respect to given keyword, for the
+ * collation service. If two locales return the same result, then
+ * collators instantiated for these locales will behave
+ * equivalently. The converse is not always true; two collators
+ * may in fact be equivalent, but return different results, due to
+ * internal details. The return result has no other meaning than
+ * that stated above, and implies nothing as to the relationship
+ * between the two locales. This is intended for use by
+ * applications who wish to cache collators, or otherwise reuse
+ * collators when possible. The functional equivalent may change
+ * over time. For more information, please see the <a
+ * href="http://icu-project.org/userguide/locale.html#services">
+ * Locales and Services</a> section of the ICU User Guide.
+ * @param result fillin for the functionally equivalent locale
+ * @param resultCapacity capacity of the fillin buffer
+ * @param keyword a particular keyword as enumerated by
+ * ucol_getKeywords.
+ * @param locale the requested locale
+ * @param isAvailable if non-NULL, pointer to a fillin parameter that
+ * indicates whether the requested locale was 'available' to the
+ * collation service. A locale is defined as 'available' if it
+ * physically exists within the collation locale data.
+ * @param status pointer to input-output error code
+ * @return the actual buffer size needed for the locale. If greater
+ * than resultCapacity, the returned full name will be truncated and
+ * an error code will be returned.
+ * @stable ICU 3.0
+ */
+U_STABLE int32_t U_EXPORT2
+ucol_getFunctionalEquivalent(char* result, int32_t resultCapacity,
+ const char* keyword, const char* locale,
+ UBool* isAvailable, UErrorCode* status);
+
+/**
+ * Get the collation rules from a UCollator.
+ * The rules will follow the rule syntax.
+ * @param coll The UCollator to query.
+ * @param length
+ * @return The collation rules.
+ * @stable ICU 2.0
+ */
+U_STABLE const UChar* U_EXPORT2
+ucol_getRules( const UCollator *coll,
+ int32_t *length);
+
+/** Get the short definition string for a collator. This API harvests the collator's
+ * locale and the attribute set and produces a string that can be used for opening
+ * a collator with the same properties using the ucol_openFromShortString API.
+ * This string will be normalized.
+ * The structure and the syntax of the string is defined in the "Naming collators"
+ * section of the users guide:
+ * http://icu-project.org/userguide/Collate_Concepts.html#Naming_Collators
+ * This API supports preflighting.
+ * @param coll a collator
+ * @param locale a locale that will appear as a collators locale in the resulting
+ * short string definition. If NULL, the locale will be harvested
+ * from the collator.
+ * @param buffer space to hold the resulting string
+ * @param capacity capacity of the buffer
+ * @param status for returning errors. All the preflighting errors are featured
+ * @return length of the resulting string
+ * @see ucol_openFromShortString
+ * @see ucol_normalizeShortDefinitionString
+ * @stable ICU 3.0
+ */
+U_STABLE int32_t U_EXPORT2
+ucol_getShortDefinitionString(const UCollator *coll,
+ const char *locale,
+ char *buffer,
+ int32_t capacity,
+ UErrorCode *status);
+
+/** Verifies and normalizes short definition string.
+ * Normalized short definition string has all the option sorted by the argument name,
+ * so that equivalent definition strings are the same.
+ * This API supports preflighting.
+ * @param source definition string
+ * @param destination space to hold the resulting string
+ * @param capacity capacity of the buffer
+ * @param parseError if not NULL, structure that will get filled with error's pre
+ * and post context in case of error.
+ * @param status Error code. This API will return an error if an invalid attribute
+ * or attribute/value combination is specified. All the preflighting
+ * errors are also featured
+ * @return length of the resulting normalized string.
+ *
+ * @see ucol_openFromShortString
+ * @see ucol_getShortDefinitionString
+ *
+ * @stable ICU 3.0
+ */
+
+U_STABLE int32_t U_EXPORT2
+ucol_normalizeShortDefinitionString(const char *source,
+ char *destination,
+ int32_t capacity,
+ UParseError *parseError,
+ UErrorCode *status);
+
+
+/**
+ * Get a sort key for a string from a UCollator.
+ * Sort keys may be compared using <TT>strcmp</TT>.
+ * @param coll The UCollator containing the collation rules.
+ * @param source The string to transform.
+ * @param sourceLength The length of source, or -1 if null-terminated.
+ * @param result A pointer to a buffer to receive the attribute.
+ * @param resultLength The maximum size of result.
+ * @return The size needed to fully store the sort key..
+ * @see ucol_keyHashCode
+ * @stable ICU 2.0
+ */
+U_STABLE int32_t U_EXPORT2
+ucol_getSortKey(const UCollator *coll,
+ const UChar *source,
+ int32_t sourceLength,
+ uint8_t *result,
+ int32_t resultLength);
+
+
+/** Gets the next count bytes of a sort key. Caller needs
+ * to preserve state array between calls and to provide
+ * the same type of UCharIterator set with the same string.
+ * The destination buffer provided must be big enough to store
+ * the number of requested bytes. Generated sortkey is not
+ * compatible with sortkeys generated using ucol_getSortKey
+ * API, since we don't do any compression. If uncompressed
+ * sortkeys are required, this API can be used.
+ * @param coll The UCollator containing the collation rules.
+ * @param iter UCharIterator containing the string we need
+ * the sort key to be calculated for.
+ * @param state Opaque state of sortkey iteration.
+ * @param dest Buffer to hold the resulting sortkey part
+ * @param count number of sort key bytes required.
+ * @param status error code indicator.
+ * @return the actual number of bytes of a sortkey. It can be
+ * smaller than count if we have reached the end of
+ * the sort key.
+ * @stable ICU 2.6
+ */
+U_STABLE int32_t U_EXPORT2
+ucol_nextSortKeyPart(const UCollator *coll,
+ UCharIterator *iter,
+ uint32_t state[2],
+ uint8_t *dest, int32_t count,
+ UErrorCode *status);
+
+/** enum that is taken by ucol_getBound API
+ * See below for explanation
+ * do not change the values assigned to the
+ * members of this enum. Underlying code
+ * depends on them having these numbers
+ * @stable ICU 2.0
+ */
+typedef enum {
+ /** lower bound */
+ UCOL_BOUND_LOWER = 0,
+ /** upper bound that will match strings of exact size */
+ UCOL_BOUND_UPPER = 1,
+ /** upper bound that will match all the strings that have the same initial substring as the given string */
+ UCOL_BOUND_UPPER_LONG = 2,
+ UCOL_BOUND_VALUE_COUNT
+} UColBoundMode;
+
+/**
+ * Produce a bound for a given sortkey and a number of levels.
+ * Return value is always the number of bytes needed, regardless of
+ * whether the result buffer was big enough or even valid.<br>
+ * Resulting bounds can be used to produce a range of strings that are
+ * between upper and lower bounds. For example, if bounds are produced
+ * for a sortkey of string "smith", strings between upper and lower
+ * bounds with one level would include "Smith", "SMITH", "sMiTh".<br>
+ * There are two upper bounds that can be produced. If UCOL_BOUND_UPPER
+ * is produced, strings matched would be as above. However, if bound
+ * produced using UCOL_BOUND_UPPER_LONG is used, the above example will
+ * also match "Smithsonian" and similar.<br>
+ * For more on usage, see example in cintltst/capitst.c in procedure
+ * TestBounds.
+ * Sort keys may be compared using <TT>strcmp</TT>.
+ * @param source The source sortkey.
+ * @param sourceLength The length of source, or -1 if null-terminated.
+ * (If an unmodified sortkey is passed, it is always null
+ * terminated).
+ * @param boundType Type of bound required. It can be UCOL_BOUND_LOWER, which
+ * produces a lower inclusive bound, UCOL_BOUND_UPPER, that
+ * produces upper bound that matches strings of the same length
+ * or UCOL_BOUND_UPPER_LONG that matches strings that have the
+ * same starting substring as the source string.
+ * @param noOfLevels Number of levels required in the resulting bound (for most
+ * uses, the recommended value is 1). See users guide for
+ * explanation on number of levels a sortkey can have.
+ * @param result A pointer to a buffer to receive the resulting sortkey.
+ * @param resultLength The maximum size of result.
+ * @param status Used for returning error code if something went wrong. If the
+ * number of levels requested is higher than the number of levels
+ * in the source key, a warning (U_SORT_KEY_TOO_SHORT_WARNING) is
+ * issued.
+ * @return The size needed to fully store the bound.
+ * @see ucol_keyHashCode
+ * @stable ICU 2.1
+ */
+U_STABLE int32_t U_EXPORT2
+ucol_getBound(const uint8_t *source,
+ int32_t sourceLength,
+ UColBoundMode boundType,
+ uint32_t noOfLevels,
+ uint8_t *result,
+ int32_t resultLength,
+ UErrorCode *status);
+
+/**
+ * Gets the version information for a Collator. Version is currently
+ * an opaque 32-bit number which depends, among other things, on major
+ * versions of the collator tailoring and UCA.
+ * @param coll The UCollator to query.
+ * @param info the version # information, the result will be filled in
+ * @stable ICU 2.0
+ */
+U_STABLE void U_EXPORT2
+ucol_getVersion(const UCollator* coll, UVersionInfo info);
+
+/**
+ * Gets the UCA version information for a Collator. Version is the
+ * UCA version number (3.1.1, 4.0).
+ * @param coll The UCollator to query.
+ * @param info the version # information, the result will be filled in
+ * @stable ICU 2.8
+ */
+U_STABLE void U_EXPORT2
+ucol_getUCAVersion(const UCollator* coll, UVersionInfo info);
+
+/**
+ * Merge two sort keys. The levels are merged with their corresponding counterparts
+ * (primaries with primaries, secondaries with secondaries etc.). Between the values
+ * from the same level a separator is inserted.
+ * example (uncompressed):
+ * 191B1D 01 050505 01 910505 00 and 1F2123 01 050505 01 910505 00
+ * will be merged as
+ * 191B1D 02 1F212301 050505 02 050505 01 910505 02 910505 00
+ * This allows for concatenating of first and last names for sorting, among other things.
+ * If the destination buffer is not big enough, the results are undefined.
+ * If any of source lengths are zero or any of source pointers are NULL/undefined,
+ * result is of size zero.
+ * @param src1 pointer to the first sortkey
+ * @param src1Length length of the first sortkey
+ * @param src2 pointer to the second sortkey
+ * @param src2Length length of the second sortkey
+ * @param dest buffer to hold the result
+ * @param destCapacity size of the buffer for the result
+ * @return size of the result. If the buffer is big enough size is always
+ * src1Length+src2Length-1
+ * @stable ICU 2.0
+ */
+U_STABLE int32_t U_EXPORT2
+ucol_mergeSortkeys(const uint8_t *src1, int32_t src1Length,
+ const uint8_t *src2, int32_t src2Length,
+ uint8_t *dest, int32_t destCapacity);
+
+/**
+ * Universal attribute setter
+ * @param coll collator which attributes are to be changed
+ * @param attr attribute type
+ * @param value attribute value
+ * @param status to indicate whether the operation went on smoothly or there were errors
+ * @see UColAttribute
+ * @see UColAttributeValue
+ * @see ucol_getAttribute
+ * @stable ICU 2.0
+ */
+U_STABLE void U_EXPORT2
+ucol_setAttribute(UCollator *coll, UColAttribute attr, UColAttributeValue value, UErrorCode *status);
+
+/**
+ * Universal attribute getter
+ * @param coll collator which attributes are to be changed
+ * @param attr attribute type
+ * @return attribute value
+ * @param status to indicate whether the operation went on smoothly or there were errors
+ * @see UColAttribute
+ * @see UColAttributeValue
+ * @see ucol_setAttribute
+ * @stable ICU 2.0
+ */
+U_STABLE UColAttributeValue U_EXPORT2
+ucol_getAttribute(const UCollator *coll, UColAttribute attr, UErrorCode *status);
+
+/** Variable top
+ * is a two byte primary value which causes all the codepoints with primary values that
+ * are less or equal than the variable top to be shifted when alternate handling is set
+ * to UCOL_SHIFTED.
+ * Sets the variable top to a collation element value of a string supplied.
+ * @param coll collator which variable top needs to be changed
+ * @param varTop one or more (if contraction) UChars to which the variable top should be set
+ * @param len length of variable top string. If -1 it is considered to be zero terminated.
+ * @param status error code. If error code is set, the return value is undefined.
+ * Errors set by this function are: <br>
+ * U_CE_NOT_FOUND_ERROR if more than one character was passed and there is no such
+ * a contraction<br>
+ * U_PRIMARY_TOO_LONG_ERROR if the primary for the variable top has more than two bytes
+ * @return a 32 bit value containing the value of the variable top in upper 16 bits.
+ * Lower 16 bits are undefined
+ * @see ucol_getVariableTop
+ * @see ucol_restoreVariableTop
+ * @stable ICU 2.0
+ */
+U_STABLE uint32_t U_EXPORT2
+ucol_setVariableTop(UCollator *coll,
+ const UChar *varTop, int32_t len,
+ UErrorCode *status);
+
+/**
+ * Gets the variable top value of a Collator.
+ * Lower 16 bits are undefined and should be ignored.
+ * @param coll collator which variable top needs to be retrieved
+ * @param status error code (not changed by function). If error code is set,
+ * the return value is undefined.
+ * @return the variable top value of a Collator.
+ * @see ucol_setVariableTop
+ * @see ucol_restoreVariableTop
+ * @stable ICU 2.0
+ */
+U_STABLE uint32_t U_EXPORT2 ucol_getVariableTop(const UCollator *coll, UErrorCode *status);
+
+/**
+ * Sets the variable top to a collation element value supplied. Variable top is
+ * set to the upper 16 bits.
+ * Lower 16 bits are ignored.
+ * @param coll collator which variable top needs to be changed
+ * @param varTop CE value, as returned by ucol_setVariableTop or ucol)getVariableTop
+ * @param status error code (not changed by function)
+ * @see ucol_getVariableTop
+ * @see ucol_setVariableTop
+ * @stable ICU 2.0
+ */
+U_STABLE void U_EXPORT2
+ucol_restoreVariableTop(UCollator *coll, const uint32_t varTop, UErrorCode *status);
+
+/**
+ * Thread safe cloning operation. The result is a clone of a given collator.
+ * @param coll collator to be cloned
+ * @param stackBuffer user allocated space for the new clone.
+ * If NULL new memory will be allocated.
+ * If buffer is not large enough, new memory will be allocated.
+ * Clients can use the U_COL_SAFECLONE_BUFFERSIZE.
+ * This will probably be enough to avoid memory allocations.
+ * @param pBufferSize pointer to size of allocated space.
+ * If *pBufferSize == 0, a sufficient size for use in cloning will
+ * be returned ('pre-flighting')
+ * If *pBufferSize is not enough for a stack-based safe clone,
+ * new memory will be allocated.
+ * @param status to indicate whether the operation went on smoothly or there were errors
+ * An informational status value, U_SAFECLONE_ALLOCATED_ERROR, is used if any
+ * allocations were necessary.
+ * @return pointer to the new clone
+ * @see ucol_open
+ * @see ucol_openRules
+ * @see ucol_close
+ * @stable ICU 2.0
+ */
+U_STABLE UCollator* U_EXPORT2
+ucol_safeClone(const UCollator *coll,
+ void *stackBuffer,
+ int32_t *pBufferSize,
+ UErrorCode *status);
+
+/** default memory size for the new clone. It needs to be this large for os/400 large pointers
+ * @stable ICU 2.0
+ */
+#define U_COL_SAFECLONE_BUFFERSIZE 512
+
+/**
+ * Returns current rules. Delta defines whether full rules are returned or just the tailoring.
+ * Returns number of UChars needed to store rules. If buffer is NULL or bufferLen is not enough
+ * to store rules, will store up to available space.
+ * @param coll collator to get the rules from
+ * @param delta one of UCOL_TAILORING_ONLY, UCOL_FULL_RULES.
+ * @param buffer buffer to store the result in. If NULL, you'll get no rules.
+ * @param bufferLen lenght of buffer to store rules in. If less then needed you'll get only the part that fits in.
+ * @return current rules
+ * @stable ICU 2.0
+ */
+U_STABLE int32_t U_EXPORT2
+ucol_getRulesEx(const UCollator *coll, UColRuleOption delta, UChar *buffer, int32_t bufferLen);
+
+/**
+ * gets the locale name of the collator. If the collator
+ * is instantiated from the rules, then this function returns
+ * NULL.
+ * @param coll The UCollator for which the locale is needed
+ * @param type You can choose between requested, valid and actual
+ * locale. For description see the definition of
+ * ULocDataLocaleType in uloc.h
+ * @param status error code of the operation
+ * @return real locale name from which the collation data comes.
+ * If the collator was instantiated from rules, returns
+ * NULL.
+ * @deprecated ICU 2.8 Use ucol_getLocaleByType instead
+ */
+U_DEPRECATED const char * U_EXPORT2
+ucol_getLocale(const UCollator *coll, ULocDataLocaleType type, UErrorCode *status);
+
+
+/**
+ * gets the locale name of the collator. If the collator
+ * is instantiated from the rules, then this function returns
+ * NULL.
+ * @param coll The UCollator for which the locale is needed
+ * @param type You can choose between requested, valid and actual
+ * locale. For description see the definition of
+ * ULocDataLocaleType in uloc.h
+ * @param status error code of the operation
+ * @return real locale name from which the collation data comes.
+ * If the collator was instantiated from rules, returns
+ * NULL.
+ * @stable ICU 2.8
+ */
+U_STABLE const char * U_EXPORT2
+ucol_getLocaleByType(const UCollator *coll, ULocDataLocaleType type, UErrorCode *status);
+
+/**
+ * Get an Unicode set that contains all the characters and sequences tailored in
+ * this collator. The result must be disposed of by using uset_close.
+ * @param coll The UCollator for which we want to get tailored chars
+ * @param status error code of the operation
+ * @return a pointer to newly created USet. Must be be disposed by using uset_close
+ * @see ucol_openRules
+ * @see uset_close
+ * @stable ICU 2.4
+ */
+U_STABLE USet * U_EXPORT2
+ucol_getTailoredSet(const UCollator *coll, UErrorCode *status);
+
+#ifndef U_HIDE_INTERNAL_API
+/**
+ * Returned by ucol_collatorToIdentifier to signify that collator is
+ * not encodable as an identifier.
+ * @internal ICU 3.0
+ */
+#define UCOL_SIT_COLLATOR_NOT_ENCODABLE 0x80000000
+#endif /* U_HIDE_INTERNAL_API */
+
+/**
+ * Get a 31-bit identifier given a collator.
+ * @param coll UCollator
+ * @param locale a locale that will appear as a collators locale in the resulting
+ * short string definition. If NULL, the locale will be harvested
+ * from the collator.
+ * @param status holds error messages
+ * @return 31-bit identifier. MSB is used if the collator cannot be encoded. In that
+ * case UCOL_SIT_COLLATOR_NOT_ENCODABLE is returned
+ * @see ucol_openFromIdentifier
+ * @see ucol_identifierToShortString
+ * @internal ICU 3.0
+ */
+U_INTERNAL uint32_t U_EXPORT2
+ucol_collatorToIdentifier(const UCollator *coll,
+ const char *locale,
+ UErrorCode *status);
+
+/**
+ * Open a collator given a 31-bit identifier
+ * @param identifier 31-bit identifier, encoded by calling ucol_collatorToIdentifier
+ * @param forceDefaults if FALSE, the settings that are the same as the collator
+ * default settings will not be applied (for example, setting
+ * French secondary on a French collator would not be executed).
+ * If TRUE, all the settings will be applied regardless of the
+ * collator default value. If the definition
+ * strings that can be produced from a collator instantiated by
+ * calling this API are to be cached, should be set to FALSE.
+ * @param status for returning errors
+ * @return UCollator object
+ * @see ucol_collatorToIdentifier
+ * @see ucol_identifierToShortString
+ * @internal ICU 3.0
+ */
+U_INTERNAL UCollator* U_EXPORT2
+ucol_openFromIdentifier(uint32_t identifier,
+ UBool forceDefaults,
+ UErrorCode *status);
+
+
+/**
+ * Calculate the short definition string given an identifier. Supports preflighting.
+ * @param identifier 31-bit identifier, encoded by calling ucol_collatorToIdentifier
+ * @param buffer buffer to store the result
+ * @param capacity buffer capacity
+ * @param forceDefaults whether the settings that are the same as the default setting
+ * should be forced anyway. Setting this argument to FALSE reduces
+ * the number of different configurations, but decreases performace
+ * as a collator has to be instantiated.
+ * @param status for returning errors
+ * @return length of the short definition string
+ * @see ucol_collatorToIdentifier
+ * @see ucol_openFromIdentifier
+ * @see ucol_shortStringToIdentifier
+ * @internal ICU 3.0
+ */
+U_INTERNAL int32_t U_EXPORT2
+ucol_identifierToShortString(uint32_t identifier,
+ char *buffer,
+ int32_t capacity,
+ UBool forceDefaults,
+ UErrorCode *status);
+
+/**
+ * Calculate the identifier given a short definition string. Supports preflighting.
+ * @param definition short string definition
+ * @param forceDefaults whether the settings that are the same as the default setting
+ * should be forced anyway. Setting this argument to FALSE reduces
+ * the number of different configurations, but decreases performace
+ * as a collator has to be instantiated.
+ * @param status for returning errors
+ * @return identifier
+ * @see ucol_collatorToIdentifier
+ * @see ucol_openFromIdentifier
+ * @see ucol_identifierToShortString
+ * @internal ICU 3.0
+ */
+U_INTERNAL uint32_t U_EXPORT2
+ucol_shortStringToIdentifier(const char *definition,
+ UBool forceDefaults,
+ UErrorCode *status);
+
+
+
+/**
+ * Universal attribute getter that returns UCOL_DEFAULT if the value is default
+ * @param coll collator which attributes are to be changed
+ * @param attr attribute type
+ * @return attribute value or UCOL_DEFAULT if the value is default
+ * @param status to indicate whether the operation went on smoothly or there were errors
+ * @see UColAttribute
+ * @see UColAttributeValue
+ * @see ucol_setAttribute
+ * @internal ICU 3.0
+ */
+U_INTERNAL UColAttributeValue U_EXPORT2
+ucol_getAttributeOrDefault(const UCollator *coll, UColAttribute attr, UErrorCode *status);
+
+/** Check whether two collators are equal. Collators are considered equal if they
+ * will sort strings the same. This means that both the current attributes and the
+ * rules must be equivalent. Currently used for RuleBasedCollator::operator==.
+ * @param source first collator
+ * @param target second collator
+ * @return TRUE or FALSE
+ * @internal ICU 3.0
+ */
+U_INTERNAL UBool U_EXPORT2
+ucol_equals(const UCollator *source, const UCollator *target);
+
+/** Calculates the set of unsafe code points, given a collator.
+ * A character is unsafe if you could append any character and cause the ordering to alter significantly.
+ * Collation sorts in normalized order, so anything that rearranges in normalization can cause this.
+ * Thus if you have a character like a_umlaut, and you add a lower_dot to it,
+ * then it normalizes to a_lower_dot + umlaut, and sorts differently.
+ * @param coll Collator
+ * @param unsafe a fill-in set to receive the unsafe points
+ * @param status for catching errors
+ * @return number of elements in the set
+ * @internal ICU 3.0
+ */
+U_INTERNAL int32_t U_EXPORT2
+ucol_getUnsafeSet( const UCollator *coll,
+ USet *unsafe,
+ UErrorCode *status);
+
+/** Reset UCA's static pointers. You don't want to use this, unless your static memory can go away.
+ * @internal ICU 3.2.1
+ */
+U_INTERNAL void U_EXPORT2
+ucol_forgetUCA(void);
+
+/** Touches all resources needed for instantiating a collator from a short string definition,
+ * thus filling up the cache.
+ * @param definition A short string containing a locale and a set of attributes.
+ * Attributes not explicitly mentioned are left at the default
+ * state for a locale.
+ * @param parseError if not NULL, structure that will get filled with error's pre
+ * and post context in case of error.
+ * @param forceDefaults if FALSE, the settings that are the same as the collator
+ * default settings will not be applied (for example, setting
+ * French secondary on a French collator would not be executed).
+ * If TRUE, all the settings will be applied regardless of the
+ * collator default value. If the definition
+ * strings are to be cached, should be set to FALSE.
+ * @param status Error code. Apart from regular error conditions connected to
+ * instantiating collators (like out of memory or similar), this
+ * API will return an error if an invalid attribute or attribute/value
+ * combination is specified.
+ * @see ucol_openFromShortString
+ * @internal ICU 3.2.1
+ */
+U_INTERNAL void U_EXPORT2
+ucol_prepareShortStringOpen( const char *definition,
+ UBool forceDefaults,
+ UParseError *parseError,
+ UErrorCode *status);
+
+/** Creates a binary image of a collator. This binary image can be stored and
+ * later used to instantiate a collator using ucol_openBinary.
+ * This API supports preflighting.
+ * @param coll Collator
+ * @param buffer a fill-in buffer to receive the binary image
+ * @param capacity capacity of the destination buffer
+ * @param status for catching errors
+ * @return size of the image
+ * @see ucol_openBinary
+ * @stable ICU 3.2
+ */
+U_STABLE int32_t U_EXPORT2
+ucol_cloneBinary(const UCollator *coll,
+ uint8_t *buffer, int32_t capacity,
+ UErrorCode *status);
+
+/** Opens a collator from a collator binary image created using
+ * ucol_cloneBinary. Binary image used in instantiation of the
+ * collator remains owned by the user and should stay around for
+ * the lifetime of the collator. The API also takes a base collator
+ * which usualy should be UCA.
+ * @param bin binary image owned by the user and required through the
+ * lifetime of the collator
+ * @param length size of the image. If negative, the API will try to
+ * figure out the length of the image
+ * @param base fallback collator, usually UCA. Base is required to be
+ * present through the lifetime of the collator. Currently
+ * it cannot be NULL.
+ * @param status for catching errors
+ * @return newly created collator
+ * @see ucol_cloneBinary
+ * @stable ICU 3.2
+ */
+U_STABLE UCollator* U_EXPORT2
+ucol_openBinary(const uint8_t *bin, int32_t length,
+ const UCollator *base,
+ UErrorCode *status);
+
+
+#endif /* #if !UCONFIG_NO_COLLATION */
+
+#endif
+