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// © 2017 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
// stringoptions.h
// created: 2017jun08 Markus W. Scherer
#ifndef __STRINGOPTIONS_H__
#define __STRINGOPTIONS_H__
#include "unicode/utypes.h"
/**
* \file
* \brief C API: Bit set option bit constants for various string and character processing functions.
*/
/**
* Option value for case folding: Use default mappings defined in CaseFolding.txt.
*
* @stable ICU 2.0
*/
#define U_FOLD_CASE_DEFAULT 0
/**
* Option value for case folding:
*
* Use the modified set of mappings provided in CaseFolding.txt to handle dotted I
* and dotless i appropriately for Turkic languages (tr, az).
*
* Before Unicode 3.2, CaseFolding.txt contains mappings marked with 'I' that
* are to be included for default mappings and
* excluded for the Turkic-specific mappings.
*
* Unicode 3.2 CaseFolding.txt instead contains mappings marked with 'T' that
* are to be excluded for default mappings and
* included for the Turkic-specific mappings.
*
* @stable ICU 2.0
*/
#define U_FOLD_CASE_EXCLUDE_SPECIAL_I 1
/**
* Titlecase the string as a whole rather than each word.
* (Titlecase only the character at index 0, possibly adjusted.)
* Option bits value for titlecasing APIs that take an options bit set.
*
* It is an error to specify multiple titlecasing iterator options together,
* including both an options bit and an explicit BreakIterator.
*
* @see U_TITLECASE_ADJUST_TO_CASED
* @stable ICU 60
*/
#define U_TITLECASE_WHOLE_STRING 0x20
/**
* Titlecase sentences rather than words.
* (Titlecase only the first character of each sentence, possibly adjusted.)
* Option bits value for titlecasing APIs that take an options bit set.
*
* It is an error to specify multiple titlecasing iterator options together,
* including both an options bit and an explicit BreakIterator.
*
* @see U_TITLECASE_ADJUST_TO_CASED
* @stable ICU 60
*/
#define U_TITLECASE_SENTENCES 0x40
/**
* 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 character at each
* (possibly adjusted) BreakIterator index and
* lowercase all other characters up to the next iterator index.
* With this option, the other characters will not be modified.
*
* @see U_TITLECASE_ADJUST_TO_CASED
* @see UnicodeString::toTitle
* @see CaseMap::toTitle
* @see ucasemap_setOptions
* @see ucasemap_toTitle
* @see ucasemap_utf8ToTitle
* @stable ICU 3.8
*/
#define U_TITLECASE_NO_LOWERCASE 0x100
/**
* Do not adjust the titlecasing BreakIterator 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 to the next relevant character (see U_TITLECASE_ADJUST_TO_CASED),
* and titlecase that one.
*
* Other characters are lowercased.
*
* It is an error to specify multiple titlecasing adjustment options together.
*
* @see U_TITLECASE_ADJUST_TO_CASED
* @see U_TITLECASE_NO_LOWERCASE
* @see UnicodeString::toTitle
* @see CaseMap::toTitle
* @see ucasemap_setOptions
* @see ucasemap_toTitle
* @see ucasemap_utf8ToTitle
* @stable ICU 3.8
*/
#define U_TITLECASE_NO_BREAK_ADJUSTMENT 0x200
/**
* Adjust each titlecasing BreakIterator index to the next cased character.
* (See the Unicode Standard, chapter 3, Default Case Conversion, R3 toTitlecase(X).)
* Option bit for titlecasing APIs that take an options bit set.
*
* This used to be the default index adjustment in ICU.
* Since ICU 60, the default index adjustment is to the next character that is
* a letter, number, symbol, or private use code point.
* (Uncased modifier letters are skipped.)
* The difference in behavior is small for word titlecasing,
* but the new adjustment is much better for whole-string and sentence titlecasing:
* It yields "49ers" and "«丰(abc)»" instead of "49Ers" and "«丰(Abc)»".
*
* It is an error to specify multiple titlecasing adjustment options together.
*
* @see U_TITLECASE_NO_BREAK_ADJUSTMENT
* @stable ICU 60
*/
#define U_TITLECASE_ADJUST_TO_CASED 0x400
/**
* Option for string transformation functions to not first reset the Edits object.
* Used for example in some case-mapping and normalization functions.
*
* @see CaseMap
* @see Edits
* @see Normalizer2
* @stable ICU 60
*/
#define U_EDITS_NO_RESET 0x2000
/**
* Omit unchanged text when recording how source substrings
* relate to changed and unchanged result substrings.
* Used for example in some case-mapping and normalization functions.
*
* @see CaseMap
* @see Edits
* @see Normalizer2
* @stable ICU 60
*/
#define U_OMIT_UNCHANGED_TEXT 0x4000
/**
* Option bit for u_strCaseCompare, u_strcasecmp, unorm_compare, etc:
* Compare strings in code point order instead of code unit order.
* @stable ICU 2.2
*/
#define U_COMPARE_CODE_POINT_ORDER 0x8000
/**
* Option bit for unorm_compare:
* Perform case-insensitive comparison.
* @stable ICU 2.2
*/
#define U_COMPARE_IGNORE_CASE 0x10000
/**
* Option bit for unorm_compare:
* Both input strings are assumed to fulfill FCD conditions.
* @stable ICU 2.2
*/
#define UNORM_INPUT_IS_FCD 0x20000
// Related definitions elsewhere.
// Options that are not meaningful in the same functions
// can share the same bits.
//
// Public:
// unicode/unorm.h #define UNORM_COMPARE_NORM_OPTIONS_SHIFT 20
//
// Internal: (may change or be removed)
// ucase.h #define _STRCASECMP_OPTIONS_MASK 0xffff
// ucase.h #define _FOLD_CASE_OPTIONS_MASK 7
// ucasemap_imp.h #define U_TITLECASE_ITERATOR_MASK 0xe0
// ucasemap_imp.h #define U_TITLECASE_ADJUSTMENT_MASK 0x600
// ustr_imp.h #define _STRNCMP_STYLE 0x1000
// unormcmp.cpp #define _COMPARE_EQUIV 0x80000
#endif // __STRINGOPTIONS_H__
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