source/common/unicode/ucasemap.h - external/github.com/unicode-org/icu - Git at Google

 /*
 *******************************************************************************
 *
 *   Copyright (C) 2005-2007, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *
 *******************************************************************************
 *   file name:  ucasemap.h
 *   encoding:   US-ASCII
 *   tab size:   8 (not used)
 *   indentation:4
 *
 *   created on: 2005may06
 *   created by: Markus W. Scherer
 *
 *   Case mapping service object and functions using it.
 */

 #ifndef __UCASEMAP_H__
 #define __UCASEMAP_H__

 #include "unicode/utypes.h"
 #include "unicode/ustring.h"

 /**
  * \file
  * \brief C API: Unicode case mapping functions using a UCaseMap service object.
  *
  * The service object takes care of memory allocations, data loading, and setup
  * for the attributes, as usual.
  *
  * Currently, the functionality provided here does not overlap with uchar.h
  * and ustring.h, except for ucasemap_toTitle().
  *
  * ucasemap_utf8XYZ() functions operate directly on UTF-8 strings.
  */

 /**
  * UCaseMap is an opaque service object for newer ICU case mapping functions.
  * Older functions did not use a service object.
  * @stable ICU 3.4
  */
 struct UCaseMap;
 typedef struct UCaseMap UCaseMap; /**< C typedef for struct UCaseMap. @stable ICU 3.4 */

 /**
  * Open a UCaseMap service object for a locale and a set of options.
  * The locale ID and options are preprocessed so that functions using the
  * service object need not process them in each call.
  *
  * @param locale ICU locale ID, used for language-dependent
  *               upper-/lower-/title-casing according to the Unicode standard.
  *               Usual semantics: ""=root, NULL=default locale, etc.
  * @param options Options bit set, used for case folding and string comparisons.
  *                Same flags as for u_foldCase(), u_strFoldCase(),
  *                u_strCaseCompare(), etc.
  *                Use 0 or U_FOLD_CASE_DEFAULT for default behavior.
  * @param pErrorCode Must be a valid pointer to an error code value,
  *                   which must not indicate a failure before the function call.
  * @return Pointer to a UCaseMap service object, if successful.
  *
  * @see U_FOLD_CASE_DEFAULT
  * @see U_FOLD_CASE_EXCLUDE_SPECIAL_I
  * @see U_TITLECASE_NO_LOWERCASE
  * @see U_TITLECASE_NO_BREAK_ADJUSTMENT
  * @stable ICU 3.4
  */
 U_STABLE UCaseMap * U_EXPORT2
 ucasemap_open(const char *locale, uint32_t options, UErrorCode *pErrorCode);

 /**
  * Close a UCaseMap service object.
  * @param csm Object to be closed.
  * @stable ICU 3.4
  */
 U_STABLE void U_EXPORT2
 ucasemap_close(UCaseMap *csm);

 /**
  * Get the locale ID that is used for language-dependent case mappings.
  * @param csm UCaseMap service object.
  * @return locale ID
  * @stable ICU 3.4
  */
 U_STABLE const char * U_EXPORT2
 ucasemap_getLocale(const UCaseMap *csm);

 /**
  * Get the options bit set that is used for case folding and string comparisons.
  * @param csm UCaseMap service object.
  * @return options bit set
  * @stable ICU 3.4
  */
 U_STABLE uint32_t U_EXPORT2
 ucasemap_getOptions(const UCaseMap *csm);

 /**
  * Set the locale ID that is used for language-dependent case mappings.
  *
  * @param csm UCaseMap service object.
  * @param locale Locale ID, see ucasemap_open().
  * @param pErrorCode Must be a valid pointer to an error code value,
  *                   which must not indicate a failure before the function call.
  *
  * @see ucasemap_open
  * @stable ICU 3.4
  */
 U_STABLE void U_EXPORT2
 ucasemap_setLocale(UCaseMap *csm, const char *locale, UErrorCode *pErrorCode);

 /**
  * Set the options bit set that is used for case folding and string comparisons.
  *
  * @param csm UCaseMap service object.
  * @param options Options bit set, see ucasemap_open().
  * @param pErrorCode Must be a valid pointer to an error code value,
  *                   which must not indicate a failure before the function call.
  *
  * @see ucasemap_open
  * @stable ICU 3.4
  */
 U_STABLE void U_EXPORT2
 ucasemap_setOptions(UCaseMap *csm, uint32_t options, UErrorCode *pErrorCode);

 #ifndef U_HIDE_DRAFT_API

 /**
  * Do not lowercase non-initial parts of words when titlecasing.
  * Option bit for titlecasing APIs that take an options bit set.
  *
  * By default, titlecasing will titlecase the first cased character
  * of a word and lowercase all other characters.
  * With this option, the other characters will not be modified.
  *
  * @see ucasemap_setOptions
  * @see ucasemap_toTitle
  * @see ucasemap_utf8ToTitle
  * @see UnicodeString::toTitle
  * @draft ICU 3.8
  */
 #define U_TITLECASE_NO_LOWERCASE 0x100

 /**
  * Do not adjust the titlecasing indexes from BreakIterator::next() indexes;
  * titlecase exactly the characters at breaks from the iterator.
  * Option bit for titlecasing APIs that take an options bit set.
  *
  * By default, titlecasing will take each break iterator index,
  * adjust it by looking for the next cased character, and titlecase that one.
  * Other characters are lowercased.
  *
  * This follows Unicode 4 & 5 section 3.13 Default Case Operations:
  *
  * R3  toTitlecase(X): Find the word boundaries based on Unicode Standard Annex
  * #29, "Text Boundaries." Between each pair of word boundaries, find the first
  * cased character F. If F exists, map F to default_title(F); then map each
  * subsequent character C to default_lower(C).
  *
  * @see ucasemap_setOptions
  * @see ucasemap_toTitle
  * @see ucasemap_utf8ToTitle
  * @see UnicodeString::toTitle
  * @see U_TITLECASE_NO_LOWERCASE
  * @draft ICU 3.8
  */
 #define U_TITLECASE_NO_BREAK_ADJUSTMENT 0x200

 #endif

 #if !UCONFIG_NO_BREAK_ITERATION

 /**
  * Get the break iterator that is used for titlecasing.
  * Do not modify the returned break iterator.
  * @param csm UCaseMap service object.
  * @return titlecasing break iterator
  * @draft ICU 3.8
  */
 U_DRAFT const UBreakIterator * U_EXPORT2
 ucasemap_getBreakIterator(const UCaseMap *csm);

 /**
  * Set the break iterator that is used for titlecasing.
  * The UCaseMap service object releases a previously set break iterator
  * and "adopts" this new one, taking ownership of it.
  * It will be released in a subsequent call to ucasemap_setBreakIterator()
  * or ucasemap_close().
  *
  * Break iterator operations are not thread-safe. Therefore, titlecasing
  * functions use non-const UCaseMap objects. It is not possible to titlecase
  * strings concurrently using the same UCaseMap.
  *
  * @param csm UCaseMap service object.
  * @param iterToAdopt Break iterator to be adopted for titlecasing.
  * @param pErrorCode Must be a valid pointer to an error code value,
  *                   which must not indicate a failure before the function call.
  *
  * @see ucasemap_toTitle
  * @see ucasemap_utf8ToTitle
  * @draft ICU 3.8
  */
 U_DRAFT void U_EXPORT2
 ucasemap_setBreakIterator(UCaseMap *csm, UBreakIterator *iterToAdopt, UErrorCode *pErrorCode);

 /**
  * Titlecase a UTF-16 string. This function is almost a duplicate of u_strToTitle(),
  * except that it takes ucasemap_setOptions() into account and has performance
  * advantages from being able to use a UCaseMap object for multiple case mapping
  * operations, saving setup time.
  *
  * Casing is locale-dependent and context-sensitive.
  * Titlecasing uses a break iterator to find the first characters of words
  * that are to be titlecased. It titlecases those characters and lowercases
  * all others. (This can be modified with ucasemap_setOptions().)
  *
  * The titlecase break iterator can be provided to customize for arbitrary
  * styles, using rules and dictionaries beyond the standard iterators.
  * It may be more efficient to always provide an iterator to avoid
  * opening and closing one for each string.
  * The standard titlecase iterator for the root locale implements the
  * algorithm of Unicode TR 21.
  *
  * This function uses only the setText(), first() and next() methods of the
  * provided break iterator.
  *
  * The result may be longer or shorter than the original.
  * The source string and the destination buffer must not overlap.
  *
  * @param csm       UCaseMap service object.
  * @param dest      A buffer for the result string. The result will be NUL-terminated if
  *                  the buffer is large enough.
  *                  The contents is undefined in case of failure.
  * @param destCapacity The size of the buffer (number of bytes). If it is 0, then
  *                  dest may be NULL and the function will only return the length of the result
  *                  without writing any of the result string.
  * @param src       The original string.
  * @param srcLength The length of the original string. If -1, then src must be NUL-terminated.
  * @param pErrorCode Must be a valid pointer to an error code value,
  *                  which must not indicate a failure before the function call.
  * @return The length of the result string, if successful - or in case of a buffer overflow,
  *         in which case it will be greater than destCapacity.
  *
  * @see u_strToTitle
  * @draft ICU 3.8
  */
 U_DRAFT int32_t U_EXPORT2
 ucasemap_toTitle(UCaseMap *csm,
                  UChar *dest, int32_t destCapacity,
                  const UChar *src, int32_t srcLength,
                  UErrorCode *pErrorCode);

 #endif

 /**
  * Lowercase the characters in a UTF-8 string.
  * Casing is locale-dependent and context-sensitive.
  * The result may be longer or shorter than the original.
  * The source string and the destination buffer must not overlap.
  *
  * @param csm       UCaseMap service object.
  * @param dest      A buffer for the result string. The result will be NUL-terminated if
  *                  the buffer is large enough.
  *                  The contents is undefined in case of failure.
  * @param destCapacity The size of the buffer (number of bytes). If it is 0, then
  *                  dest may be NULL and the function will only return the length of the result
  *                  without writing any of the result string.
  * @param src       The original string.
  * @param srcLength The length of the original string. If -1, then src must be NUL-terminated.
  * @param pErrorCode Must be a valid pointer to an error code value,
  *                  which must not indicate a failure before the function call.
  * @return The length of the result string, if successful - or in case of a buffer overflow,
  *         in which case it will be greater than destCapacity.
  *
  * @see u_strToLower
  * @stable ICU 3.4
  */
 U_STABLE int32_t U_EXPORT2
 ucasemap_utf8ToLower(const UCaseMap *csm,
                      char *dest, int32_t destCapacity,
                      const char *src, int32_t srcLength,
                      UErrorCode *pErrorCode);

 /**
  * Uppercase the characters in a UTF-8 string.
  * Casing is locale-dependent and context-sensitive.
  * The result may be longer or shorter than the original.
  * The source string and the destination buffer must not overlap.
  *
  * @param csm       UCaseMap service object.
  * @param dest      A buffer for the result string. The result will be NUL-terminated if
  *                  the buffer is large enough.
  *                  The contents is undefined in case of failure.
  * @param destCapacity The size of the buffer (number of bytes). If it is 0, then
  *                  dest may be NULL and the function will only return the length of the result
  *                  without writing any of the result string.
  * @param src       The original string.
  * @param srcLength The length of the original string. If -1, then src must be NUL-terminated.
  * @param pErrorCode Must be a valid pointer to an error code value,
  *                  which must not indicate a failure before the function call.
  * @return The length of the result string, if successful - or in case of a buffer overflow,
  *         in which case it will be greater than destCapacity.
  *
  * @see u_strToUpper
  * @stable ICU 3.4
  */
 U_STABLE int32_t U_EXPORT2
 ucasemap_utf8ToUpper(const UCaseMap *csm,
                      char *dest, int32_t destCapacity,
                      const char *src, int32_t srcLength,
                      UErrorCode *pErrorCode);

 #if !UCONFIG_NO_BREAK_ITERATION

 /**
  * Titlecase a UTF-8 string.
  * Casing is locale-dependent and context-sensitive.
  * Titlecasing uses a break iterator to find the first characters of words
  * that are to be titlecased. It titlecases those characters and lowercases
  * all others. (This can be modified with ucasemap_setOptions().)
  *
  * The titlecase break iterator can be provided to customize for arbitrary
  * styles, using rules and dictionaries beyond the standard iterators.
  * It may be more efficient to always provide an iterator to avoid
  * opening and closing one for each string.
  * The standard titlecase iterator for the root locale implements the
  * algorithm of Unicode TR 21.
  *
  * This function uses only the setText(), first() and next() methods of the
  * provided break iterator.
  *
  * The result may be longer or shorter than the original.
  * The source string and the destination buffer must not overlap.
  *
  * @param csm       UCaseMap service object.
  * @param dest      A buffer for the result string. The result will be NUL-terminated if
  *                  the buffer is large enough.
  *                  The contents is undefined in case of failure.
  * @param destCapacity The size of the buffer (number of bytes). If it is 0, then
  *                  dest may be NULL and the function will only return the length of the result
  *                  without writing any of the result string.
  * @param src       The original string.
  * @param srcLength The length of the original string. If -1, then src must be NUL-terminated.
  * @param pErrorCode Must be a valid pointer to an error code value,
  *                  which must not indicate a failure before the function call.
  * @return The length of the result string, if successful - or in case of a buffer overflow,
  *         in which case it will be greater than destCapacity.
  *
  * @see u_strToTitle
  * @see U_TITLECASE_NO_LOWERCASE
  * @see U_TITLECASE_NO_BREAK_ADJUSTMENT
  * @draft ICU 3.8
  */
 U_DRAFT int32_t U_EXPORT2
 ucasemap_utf8ToTitle(UCaseMap *csm,
                     char *dest, int32_t destCapacity,
                     const char *src, int32_t srcLength,
                     UErrorCode *pErrorCode);

 #endif

 /**
  * Case-fold the characters in a UTF-8 string.
  * Case-folding is locale-independent and not context-sensitive,
  * but there is an option for whether to include or exclude mappings for dotted I
  * and dotless i that are marked with 'I' in CaseFolding.txt.
  * The result may be longer or shorter than the original.
  * The source string and the destination buffer must not overlap.
  *
  * @param csm       UCaseMap service object.
  * @param dest      A buffer for the result string. The result will be NUL-terminated if
  *                  the buffer is large enough.
  *                  The contents is undefined in case of failure.
  * @param destCapacity The size of the buffer (number of bytes). If it is 0, then
  *                  dest may be NULL and the function will only return the length of the result
  *                  without writing any of the result string.
  * @param src       The original string.
  * @param srcLength The length of the original string. If -1, then src must be NUL-terminated.
  * @param pErrorCode Must be a valid pointer to an error code value,
  *                  which must not indicate a failure before the function call.
  * @return The length of the result string, if successful - or in case of a buffer overflow,
  *         in which case it will be greater than destCapacity.
  *
  * @see u_strFoldCase
  * @see ucasemap_setOptions
  * @see U_FOLD_CASE_DEFAULT
  * @see U_FOLD_CASE_EXCLUDE_SPECIAL_I
  * @draft ICU 3.8
  */
 U_DRAFT int32_t U_EXPORT2
 ucasemap_utf8FoldCase(const UCaseMap *csm,
                       char *dest, int32_t destCapacity,
                       const char *src, int32_t srcLength,
                       UErrorCode *pErrorCode);

 #endif
	/*
	*******************************************************************************
	*
	* Copyright (C) 2005-2007, International Business Machines
	* Corporation and others. All Rights Reserved.
	*
	*******************************************************************************
	* file name: ucasemap.h
	* encoding: US-ASCII
	* tab size: 8 (not used)
	* indentation:4
	*
	* created on: 2005may06
	* created by: Markus W. Scherer
	*
	* Case mapping service object and functions using it.
	*/

	#ifndef __UCASEMAP_H__
	#define __UCASEMAP_H__

	#include "unicode/utypes.h"
	#include "unicode/ustring.h"

	/**
	* \file
	* \brief C API: Unicode case mapping functions using a UCaseMap service object.
	*
	* The service object takes care of memory allocations, data loading, and setup
	* for the attributes, as usual.
	*
	* Currently, the functionality provided here does not overlap with uchar.h
	* and ustring.h, except for ucasemap_toTitle().
	*
	* ucasemap_utf8XYZ() functions operate directly on UTF-8 strings.
	*/

	/**
	* UCaseMap is an opaque service object for newer ICU case mapping functions.
	* Older functions did not use a service object.
	* @stable ICU 3.4
	*/
	struct UCaseMap;
	typedef struct UCaseMap UCaseMap; /*< C typedef for struct UCaseMap. @stable ICU 3.4 /

	/**
	* Open a UCaseMap service object for a locale and a set of options.
	* The locale ID and options are preprocessed so that functions using the
	* service object need not process them in each call.
	*
	* @param locale ICU locale ID, used for language-dependent
	* upper-/lower-/title-casing according to the Unicode standard.
	* Usual semantics: ""=root, NULL=default locale, etc.
	* @param options Options bit set, used for case folding and string comparisons.
	* Same flags as for u_foldCase(), u_strFoldCase(),
	* u_strCaseCompare(), etc.
	* Use 0 or U_FOLD_CASE_DEFAULT for default behavior.
	* @param pErrorCode Must be a valid pointer to an error code value,
	* which must not indicate a failure before the function call.
	* @return Pointer to a UCaseMap service object, if successful.
	*
	* @see U_FOLD_CASE_DEFAULT
	* @see U_FOLD_CASE_EXCLUDE_SPECIAL_I
	* @see U_TITLECASE_NO_LOWERCASE
	* @see U_TITLECASE_NO_BREAK_ADJUSTMENT
	* @stable ICU 3.4
	*/
	U_STABLE UCaseMap * U_EXPORT2
	ucasemap_open(const char locale, uint32_t options, UErrorCode pErrorCode);

	/**
	* Close a UCaseMap service object.
	* @param csm Object to be closed.
	* @stable ICU 3.4
	*/
	U_STABLE void U_EXPORT2
	ucasemap_close(UCaseMap *csm);

	/**
	* Get the locale ID that is used for language-dependent case mappings.
	* @param csm UCaseMap service object.
	* @return locale ID
	* @stable ICU 3.4
	*/
	U_STABLE const char * U_EXPORT2
	ucasemap_getLocale(const UCaseMap *csm);

	/**
	* Get the options bit set that is used for case folding and string comparisons.
	* @param csm UCaseMap service object.
	* @return options bit set
	* @stable ICU 3.4
	*/
	U_STABLE uint32_t U_EXPORT2
	ucasemap_getOptions(const UCaseMap *csm);

	/**
	* Set the locale ID that is used for language-dependent case mappings.
	*
	* @param csm UCaseMap service object.
	* @param locale Locale ID, see ucasemap_open().
	* @param pErrorCode Must be a valid pointer to an error code value,
	* which must not indicate a failure before the function call.
	*
	* @see ucasemap_open
	* @stable ICU 3.4
	*/
	U_STABLE void U_EXPORT2
	ucasemap_setLocale(UCaseMap csm, const char locale, UErrorCode *pErrorCode);

	/**
	* Set the options bit set that is used for case folding and string comparisons.
	*
	* @param csm UCaseMap service object.
	* @param options Options bit set, see ucasemap_open().
	* @param pErrorCode Must be a valid pointer to an error code value,
	* which must not indicate a failure before the function call.
	*
	* @see ucasemap_open
	* @stable ICU 3.4
	*/
	U_STABLE void U_EXPORT2
	ucasemap_setOptions(UCaseMap csm, uint32_t options, UErrorCode pErrorCode);

	#ifndef U_HIDE_DRAFT_API

	/**
	* Do not lowercase non-initial parts of words when titlecasing.
	* Option bit for titlecasing APIs that take an options bit set.
	*
	* By default, titlecasing will titlecase the first cased character
	* of a word and lowercase all other characters.
	* With this option, the other characters will not be modified.
	*
	* @see ucasemap_setOptions
	* @see ucasemap_toTitle
	* @see ucasemap_utf8ToTitle
	* @see UnicodeString::toTitle
	* @draft ICU 3.8
	*/
	#define U_TITLECASE_NO_LOWERCASE 0x100

	/**
	* Do not adjust the titlecasing indexes from BreakIterator::next() indexes;
	* titlecase exactly the characters at breaks from the iterator.
	* Option bit for titlecasing APIs that take an options bit set.
	*
	* By default, titlecasing will take each break iterator index,
	* adjust it by looking for the next cased character, and titlecase that one.
	* Other characters are lowercased.
	*
	* This follows Unicode 4 & 5 section 3.13 Default Case Operations:
	*
	* R3 toTitlecase(X): Find the word boundaries based on Unicode Standard Annex
	* #29, "Text Boundaries." Between each pair of word boundaries, find the first
	* cased character F. If F exists, map F to default_title(F); then map each
	* subsequent character C to default_lower(C).
	*
	* @see ucasemap_setOptions
	* @see ucasemap_toTitle
	* @see ucasemap_utf8ToTitle
	* @see UnicodeString::toTitle
	* @see U_TITLECASE_NO_LOWERCASE
	* @draft ICU 3.8
	*/
	#define U_TITLECASE_NO_BREAK_ADJUSTMENT 0x200

	#endif

	#if !UCONFIG_NO_BREAK_ITERATION

	/**
	* Get the break iterator that is used for titlecasing.
	* Do not modify the returned break iterator.
	* @param csm UCaseMap service object.
	* @return titlecasing break iterator
	* @draft ICU 3.8
	*/
	U_DRAFT const UBreakIterator * U_EXPORT2
	ucasemap_getBreakIterator(const UCaseMap *csm);

	/**
	* Set the break iterator that is used for titlecasing.
	* The UCaseMap service object releases a previously set break iterator
	* and "adopts" this new one, taking ownership of it.
	* It will be released in a subsequent call to ucasemap_setBreakIterator()
	* or ucasemap_close().
	*
	* Break iterator operations are not thread-safe. Therefore, titlecasing
	* functions use non-const UCaseMap objects. It is not possible to titlecase
	* strings concurrently using the same UCaseMap.
	*
	* @param csm UCaseMap service object.
	* @param iterToAdopt Break iterator to be adopted for titlecasing.
	* @param pErrorCode Must be a valid pointer to an error code value,
	* which must not indicate a failure before the function call.
	*
	* @see ucasemap_toTitle
	* @see ucasemap_utf8ToTitle
	* @draft ICU 3.8
	*/
	U_DRAFT void U_EXPORT2
	ucasemap_setBreakIterator(UCaseMap csm, UBreakIterator iterToAdopt, UErrorCode *pErrorCode);

	/**
	* Titlecase a UTF-16 string. This function is almost a duplicate of u_strToTitle(),
	* except that it takes ucasemap_setOptions() into account and has performance
	* advantages from being able to use a UCaseMap object for multiple case mapping
	* operations, saving setup time.
	*
	* Casing is locale-dependent and context-sensitive.
	* Titlecasing uses a break iterator to find the first characters of words
	* that are to be titlecased. It titlecases those characters and lowercases
	* all others. (This can be modified with ucasemap_setOptions().)
	*
	* The titlecase break iterator can be provided to customize for arbitrary
	* styles, using rules and dictionaries beyond the standard iterators.
	* It may be more efficient to always provide an iterator to avoid
	* opening and closing one for each string.
	* The standard titlecase iterator for the root locale implements the
	* algorithm of Unicode TR 21.
	*
	* This function uses only the setText(), first() and next() methods of the
	* provided break iterator.
	*
	* The result may be longer or shorter than the original.
	* The source string and the destination buffer must not overlap.
	*
	* @param csm UCaseMap service object.
	* @param dest A buffer for the result string. The result will be NUL-terminated if
	* the buffer is large enough.
	* The contents is undefined in case of failure.
	* @param destCapacity The size of the buffer (number of bytes). If it is 0, then
	* dest may be NULL and the function will only return the length of the result
	* without writing any of the result string.
	* @param src The original string.
	* @param srcLength The length of the original string. If -1, then src must be NUL-terminated.
	* @param pErrorCode Must be a valid pointer to an error code value,
	* which must not indicate a failure before the function call.
	* @return The length of the result string, if successful - or in case of a buffer overflow,
	* in which case it will be greater than destCapacity.
	*
	* @see u_strToTitle
	* @draft ICU 3.8
	*/
	U_DRAFT int32_t U_EXPORT2
	ucasemap_toTitle(UCaseMap *csm,
	UChar *dest, int32_t destCapacity,
	const UChar *src, int32_t srcLength,
	UErrorCode *pErrorCode);

	#endif

	/**
	* Lowercase the characters in a UTF-8 string.
	* Casing is locale-dependent and context-sensitive.
	* The result may be longer or shorter than the original.
	* The source string and the destination buffer must not overlap.
	*
	* @param csm UCaseMap service object.
	* @param dest A buffer for the result string. The result will be NUL-terminated if
	* the buffer is large enough.
	* The contents is undefined in case of failure.
	* @param destCapacity The size of the buffer (number of bytes). If it is 0, then
	* dest may be NULL and the function will only return the length of the result
	* without writing any of the result string.
	* @param src The original string.
	* @param srcLength The length of the original string. If -1, then src must be NUL-terminated.
	* @param pErrorCode Must be a valid pointer to an error code value,
	* which must not indicate a failure before the function call.
	* @return The length of the result string, if successful - or in case of a buffer overflow,
	* in which case it will be greater than destCapacity.
	*
	* @see u_strToLower
	* @stable ICU 3.4
	*/
	U_STABLE int32_t U_EXPORT2
	ucasemap_utf8ToLower(const UCaseMap *csm,
	char *dest, int32_t destCapacity,
	const char *src, int32_t srcLength,
	UErrorCode *pErrorCode);

	/**
	* Uppercase the characters in a UTF-8 string.
	* Casing is locale-dependent and context-sensitive.
	* The result may be longer or shorter than the original.
	* The source string and the destination buffer must not overlap.
	*
	* @param csm UCaseMap service object.
	* @param dest A buffer for the result string. The result will be NUL-terminated if
	* the buffer is large enough.
	* The contents is undefined in case of failure.
	* @param destCapacity The size of the buffer (number of bytes). If it is 0, then
	* dest may be NULL and the function will only return the length of the result
	* without writing any of the result string.
	* @param src The original string.
	* @param srcLength The length of the original string. If -1, then src must be NUL-terminated.
	* @param pErrorCode Must be a valid pointer to an error code value,
	* which must not indicate a failure before the function call.
	* @return The length of the result string, if successful - or in case of a buffer overflow,
	* in which case it will be greater than destCapacity.
	*
	* @see u_strToUpper
	* @stable ICU 3.4
	*/
	U_STABLE int32_t U_EXPORT2
	ucasemap_utf8ToUpper(const UCaseMap *csm,
	char *dest, int32_t destCapacity,
	const char *src, int32_t srcLength,
	UErrorCode *pErrorCode);

	#if !UCONFIG_NO_BREAK_ITERATION

	/**
	* Titlecase a UTF-8 string.
	* Casing is locale-dependent and context-sensitive.
	* Titlecasing uses a break iterator to find the first characters of words
	* that are to be titlecased. It titlecases those characters and lowercases
	* all others. (This can be modified with ucasemap_setOptions().)
	*
	* The titlecase break iterator can be provided to customize for arbitrary
	* styles, using rules and dictionaries beyond the standard iterators.
	* It may be more efficient to always provide an iterator to avoid
	* opening and closing one for each string.
	* The standard titlecase iterator for the root locale implements the
	* algorithm of Unicode TR 21.
	*
	* This function uses only the setText(), first() and next() methods of the
	* provided break iterator.
	*
	* The result may be longer or shorter than the original.
	* The source string and the destination buffer must not overlap.
	*
	* @param csm UCaseMap service object.
	* @param dest A buffer for the result string. The result will be NUL-terminated if
	* the buffer is large enough.
	* The contents is undefined in case of failure.
	* @param destCapacity The size of the buffer (number of bytes). If it is 0, then
	* dest may be NULL and the function will only return the length of the result
	* without writing any of the result string.
	* @param src The original string.
	* @param srcLength The length of the original string. If -1, then src must be NUL-terminated.
	* @param pErrorCode Must be a valid pointer to an error code value,
	* which must not indicate a failure before the function call.
	* @return The length of the result string, if successful - or in case of a buffer overflow,
	* in which case it will be greater than destCapacity.
	*
	* @see u_strToTitle
	* @see U_TITLECASE_NO_LOWERCASE
	* @see U_TITLECASE_NO_BREAK_ADJUSTMENT
	* @draft ICU 3.8
	*/
	U_DRAFT int32_t U_EXPORT2
	ucasemap_utf8ToTitle(UCaseMap *csm,
	char *dest, int32_t destCapacity,
	const char *src, int32_t srcLength,
	UErrorCode *pErrorCode);

	#endif

	/**
	* Case-fold the characters in a UTF-8 string.
	* Case-folding is locale-independent and not context-sensitive,
	* but there is an option for whether to include or exclude mappings for dotted I
	* and dotless i that are marked with 'I' in CaseFolding.txt.
	* The result may be longer or shorter than the original.
	* The source string and the destination buffer must not overlap.
	*
	* @param csm UCaseMap service object.
	* @param dest A buffer for the result string. The result will be NUL-terminated if
	* the buffer is large enough.
	* The contents is undefined in case of failure.
	* @param destCapacity The size of the buffer (number of bytes). If it is 0, then
	* dest may be NULL and the function will only return the length of the result
	* without writing any of the result string.
	* @param src The original string.
	* @param srcLength The length of the original string. If -1, then src must be NUL-terminated.
	* @param pErrorCode Must be a valid pointer to an error code value,
	* which must not indicate a failure before the function call.
	* @return The length of the result string, if successful - or in case of a buffer overflow,
	* in which case it will be greater than destCapacity.
	*
	* @see u_strFoldCase
	* @see ucasemap_setOptions
	* @see U_FOLD_CASE_DEFAULT
	* @see U_FOLD_CASE_EXCLUDE_SPECIAL_I
	* @draft ICU 3.8
	*/
	U_DRAFT int32_t U_EXPORT2
	ucasemap_utf8FoldCase(const UCaseMap *csm,
	char *dest, int32_t destCapacity,
	const char *src, int32_t srcLength,
	UErrorCode *pErrorCode);

	#endif