257 lines
8.3 KiB
C
257 lines
8.3 KiB
C
/*
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**********************************************************************
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* Copyright (C) 1999-2001, International Business Machines
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* Corporation and others. All Rights Reserved.
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**********************************************************************
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* file name: ustr_imp.h
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* encoding: US-ASCII
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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: 2001jan30
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* created by: Markus W. Scherer
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*/
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#ifndef __USTR_IMP_H__
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#define __USTR_IMP_H__
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#include "unicode/utypes.h"
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#include "unicode/ucnv.h"
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#include "unicode/uiter.h"
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/** Simple declaration for u_strToTitle() to avoid including unicode/ubrk.h. */
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#ifndef UBRK_TYPEDEF_UBREAK_ITERATOR
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# define UBRK_TYPEDEF_UBREAK_ITERATOR
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typedef void *UBreakIterator;
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#endif
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/**
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* Bit mask for getting just the options from a string compare options word
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* that are relevant for case-insensitive string comparison.
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* See uchar.h. Also include _STRNCMP_STYLE and U_COMPARE_CODE_POINT_ORDER.
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* @internal
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*/
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#define _STRCASECMP_OPTIONS_MASK 0xffff
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/**
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* Bit mask for getting just the options from a string compare options word
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* that are relevant for case folding (of a single string or code point).
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* See uchar.h.
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* @internal
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*/
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#define _FOLD_CASE_OPTIONS_MASK 0xff
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/**
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* Compare two strings in code point order or code unit order.
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* Works in strcmp style (both lengths -1),
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* strncmp style (lengths equal and >=0, flag TRUE),
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* and memcmp/UnicodeString style (at least one length >=0).
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* @internal
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*/
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U_CAPI int32_t U_EXPORT2
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uprv_strCompare(const UChar *s1, int32_t length1,
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const UChar *s2, int32_t length2,
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UBool strncmpStyle, UBool codePointOrder);
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/**
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* Are the Unicode properties loaded?
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* This must be used before internal functions are called that do
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* not perform this check.
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* Generate a debug assertion failure if data is not loaded, to flag the fact
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* that u_init() wasn't called first, before trying to access character properties.
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* @internal
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*/
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U_CFUNC UBool
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uprv_haveProperties(UErrorCode *pErrorCode);
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/**
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* Load the Unicode property data.
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* Intended primarily for use from u_init().
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* Has no effect if property data is already loaded.
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* NOT thread safe.
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* @internal
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*/
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U_CFUNC int8_t
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uprv_loadPropsData(UErrorCode *errorCode);
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/**
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* Type of a function that may be passed to the internal case mapping functions
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* or similar for growing the destination buffer.
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* @internal
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*/
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typedef UBool U_CALLCONV
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UGrowBuffer(void *context, /* opaque pointer for this function */
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UChar **pBuffer, /* in/out destination buffer pointer */
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int32_t *pCapacity, /* in/out buffer capacity in numbers of UChars */
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int32_t reqCapacity,/* requested capacity */
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int32_t length); /* number of UChars to be copied to new buffer */
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/**
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* Default implementation of UGrowBuffer.
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* Takes a static buffer as context, allocates a new buffer,
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* and releases the old one if it is not the same as the one passed as context.
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* @internal
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*/
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U_CAPI UBool /* U_CALLCONV U_EXPORT2 */
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u_growBufferFromStatic(void *context,
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UChar **pBuffer, int32_t *pCapacity, int32_t reqCapacity,
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int32_t length);
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/*
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* Internal string casing functions implementing
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* ustring.h/ustrcase.c and UnicodeString case mapping functions.
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*
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* Lowercases [srcStart..srcLimit[ but takes
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* context [0..srcLength[ into account.
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* @internal
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*/
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U_CFUNC int32_t
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u_internalStrToLower(UChar *dest, int32_t destCapacity,
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const UChar *src, int32_t srcLength,
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int32_t srcStart, int32_t srcLimit,
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const char *locale,
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UErrorCode *pErrorCode);
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/**
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* @internal
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*/
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U_CFUNC int32_t
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u_internalStrToUpper(UChar *dest, int32_t destCapacity,
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const UChar *src, int32_t srcLength,
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const char *locale,
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UErrorCode *pErrorCode);
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#if !UCONFIG_NO_BREAK_ITERATION
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/**
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* @internal
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*/
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U_CFUNC int32_t
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u_internalStrToTitle(UChar *dest, int32_t destCapacity,
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const UChar *src, int32_t srcLength,
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UBreakIterator *titleIter,
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const char *locale,
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UErrorCode *pErrorCode);
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#endif
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/**
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* Internal case folding function.
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* @internal
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*/
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U_CFUNC int32_t
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u_internalStrFoldCase(UChar *dest, int32_t destCapacity,
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const UChar *src, int32_t srcLength,
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uint32_t options,
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UErrorCode *pErrorCode);
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/**
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* Get the full lowercase mapping for c.
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* @param iter Character iterator to check for context for SpecialCasing.
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* The current index must be on the character after c.
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* This function may or may not change the iterator index.
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* If iter==NULL then a context-independent result is returned.
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* @return the length of the output, negative if same as c
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* @internal
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*/
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U_CAPI int32_t U_EXPORT2
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u_internalToLower(UChar32 c, UCharIterator *iter,
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UChar *dest, int32_t destCapacity,
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const char *locale);
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/**
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* Get the full uppercase mapping for c.
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* @param iter Character iterator to check for context for SpecialCasing.
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* The current index must be on the character after c.
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* This function may or may not change the iterator index.
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* If iter==NULL then a context-independent result is returned.
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* @return the length of the output, negative if same as c
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* @internal
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*/
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U_CAPI int32_t U_EXPORT2
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u_internalToUpper(UChar32 c, UCharIterator *iter,
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UChar *dest, int32_t destCapacity,
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const char *locale);
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/**
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* Get the full titlecase mapping for c.
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* @param iter Character iterator to check for context for SpecialCasing.
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* The current index must be on the character after c.
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* This function may or may not change the iterator index.
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* If iter==NULL then a context-independent result is returned.
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* @return the length of the output, negative if same as c
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* @internal
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*/
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U_CAPI int32_t U_EXPORT2
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u_internalToTitle(UChar32 c, UCharIterator *iter,
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UChar *dest, int32_t destCapacity,
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const char *locale);
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/**
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* Get the full case folding mapping for c.
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* @return the length of the output, negative if same as c
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* @internal
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*/
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U_CAPI int32_t U_EXPORT2
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u_internalFoldCase(UChar32 c,
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UChar *dest, int32_t destCapacity,
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uint32_t options);
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/**
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* Get the default converter. This is a commonly used converter
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* that is used for the ustring and UnicodeString API.
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* Remember to use the u_releaseDefaultConverter when you are done.
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* @internal
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*/
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U_CAPI UConverter* U_EXPORT2
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u_getDefaultConverter(UErrorCode *status);
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/**
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* Release the default converter to the converter cache.
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* @internal
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*/
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U_CAPI void U_EXPORT2
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u_releaseDefaultConverter(UConverter *converter);
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/**
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* NUL-terminate a UChar * string if possible.
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* If length < destCapacity then NUL-terminate.
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* If length == destCapacity then do not terminate but set U_STRING_NOT_TERMINATED_WARNING.
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* If length > destCapacity then do not terminate but set U_BUFFER_OVERFLOW_ERROR.
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*
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* @param dest Destination buffer, can be NULL if destCapacity==0.
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* @param destCapacity Number of UChars available at dest.
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* @param length Number of UChars that were (to be) written to dest.
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* @param pErrorCode ICU error code.
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* @return length
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* @internal
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*/
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U_CAPI int32_t U_EXPORT2
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u_terminateUChars(UChar *dest, int32_t destCapacity, int32_t length, UErrorCode *pErrorCode);
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/**
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* NUL-terminate a char * string if possible.
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* Same as u_terminateUChars() but for a different string type.
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*/
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U_CAPI int32_t U_EXPORT2
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u_terminateChars(char *dest, int32_t destCapacity, int32_t length, UErrorCode *pErrorCode);
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/**
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* NUL-terminate a UChar32 * string if possible.
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* Same as u_terminateUChars() but for a different string type.
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*/
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U_CAPI int32_t U_EXPORT2
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u_terminateUChar32s(UChar32 *dest, int32_t destCapacity, int32_t length, UErrorCode *pErrorCode);
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/**
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* NUL-terminate a wchar_t * string if possible.
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* Same as u_terminateUChars() but for a different string type.
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*/
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U_CAPI int32_t U_EXPORT2
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u_terminateWChars(wchar_t *dest, int32_t destCapacity, int32_t length, UErrorCode *pErrorCode);
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#define u_getMaxCaseExpansion() 10
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#endif
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