228 lines
6.2 KiB
C
228 lines
6.2 KiB
C
/*
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**********************************************************************
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* Copyright (C) 1999-2010, 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/uiter.h"
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#include "ucase.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 struct UBreakIterator UBreakIterator;
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#endif
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#ifndef U_COMPARE_IGNORE_CASE
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/* see also unorm.h */
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/**
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* Option bit for unorm_compare:
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* Perform case-insensitive comparison.
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* @draft ICU 2.2
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*/
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#define U_COMPARE_IGNORE_CASE 0x10000
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#endif
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/**
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* Internal option for unorm_cmpEquivFold() for strncmp style.
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* If set, checks for both string length and terminating NUL.
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* @internal
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*/
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#define _STRNCMP_STYLE 0x1000
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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_CFUNC 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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* Internal API, used by u_strcasecmp() etc.
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* Compare strings case-insensitively,
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* in code point order or code unit order.
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* @internal
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*/
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U_CFUNC int32_t
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u_strcmpFold(const UChar *s1, int32_t length1,
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const UChar *s2, int32_t length2,
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uint32_t options,
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UErrorCode *pErrorCode);
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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.
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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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/**
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* @internal
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*/
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struct UCaseMap {
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const UCaseProps *csp;
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#if !UCONFIG_NO_BREAK_ITERATION
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UBreakIterator *iter; /* We adopt the iterator, so we own it. */
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#endif
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char locale[32];
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int32_t locCache;
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uint32_t options;
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};
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#ifndef __UCASEMAP_H__
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typedef struct UCaseMap UCaseMap;
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#endif
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/**
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* @internal
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*/
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enum {
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TO_LOWER,
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TO_UPPER,
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TO_TITLE,
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FOLD_CASE
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};
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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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ustr_toLower(const UCaseProps *csp,
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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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/**
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* @internal
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*/
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U_CFUNC int32_t
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ustr_toUpper(const UCaseProps *csp,
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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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ustr_toTitle(const UCaseProps *csp,
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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, uint32_t options,
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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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ustr_foldCase(const UCaseProps *csp,
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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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* 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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#endif
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