/*
*******************************************************************************
*
-* Copyright (C) 2005, International Business Machines
+* Copyright (C) 2005-2008, International Business Machines
* Corporation and others. All Rights Reserved.
*
*******************************************************************************
#include "unicode/uloc.h"
#include "unicode/ustring.h"
#include "unicode/ucasemap.h"
+#if !UCONFIG_NO_BREAK_ITERATION
+#include "unicode/ubrk.h"
+#include "unicode/utext.h"
+#endif
#include "cmemory.h"
#include "cstring.h"
#include "ucase.h"
/* UCaseMap service object -------------------------------------------------- */
-struct UCaseMap {
- const UCaseProps *csp;
- char locale[32];
- int32_t locCache;
- uint32_t options;
-};
-
-U_DRAFT UCaseMap * U_EXPORT2
+U_CAPI UCaseMap * U_EXPORT2
ucasemap_open(const char *locale, uint32_t options, UErrorCode *pErrorCode) {
UCaseMap *csm;
return csm;
}
-U_DRAFT void U_EXPORT2
+U_CAPI void U_EXPORT2
ucasemap_close(UCaseMap *csm) {
if(csm!=NULL) {
+#if !UCONFIG_NO_BREAK_ITERATION
+ ubrk_close(csm->iter);
+#endif
uprv_free(csm);
}
}
-U_DRAFT const char * U_EXPORT2
+U_CAPI const char * U_EXPORT2
ucasemap_getLocale(const UCaseMap *csm) {
return csm->locale;
}
-U_DRAFT uint32_t U_EXPORT2
+U_CAPI uint32_t U_EXPORT2
ucasemap_getOptions(const UCaseMap *csm) {
return csm->options;
}
-U_DRAFT void U_EXPORT2
+U_CAPI void U_EXPORT2
ucasemap_setLocale(UCaseMap *csm, const char *locale, UErrorCode *pErrorCode) {
int32_t length;
}
}
-U_DRAFT void U_EXPORT2
+U_CAPI void U_EXPORT2
ucasemap_setOptions(UCaseMap *csm, uint32_t options, UErrorCode *pErrorCode) {
csm->options=options;
}
+#if !UCONFIG_NO_BREAK_ITERATION
+
+U_CAPI const UBreakIterator * U_EXPORT2
+ucasemap_getBreakIterator(const UCaseMap *csm) {
+ return csm->iter;
+}
+
+U_CAPI void U_EXPORT2
+ucasemap_setBreakIterator(UCaseMap *csm, UBreakIterator *iterToAdopt, UErrorCode *pErrorCode) {
+ ubrk_close(csm->iter);
+ csm->iter=iterToAdopt;
+}
+
+#endif
+
/* UTF-8 string case mappings ----------------------------------------------- */
+/* TODO(markus): Move to a new, separate utf8case.c file. */
+
/* append a full case mapping result, see UCASE_MAX_STRING_LENGTH */
static U_INLINE int32_t
appendResult(uint8_t *dest, int32_t destIndex, int32_t destCapacity,
(char *)(dest+destIndex), destCapacity-destIndex, &destLength,
s, length,
&errorCode);
- destIndex+=length;
+ destIndex+=destLength;
/* we might have an overflow, but we know the actual length */
}
} else {
NULL, 0, &destLength,
s, length,
&errorCode);
- destIndex+=length;
+ destIndex+=destLength;
}
}
return destIndex;
return U_SENTINEL;
}
-typedef int32_t U_CALLCONV
-UCaseMapFull(const UCaseProps *csp, UChar32 c,
- UCaseContextIterator *iter, void *context,
- const UChar **pString,
- const char *locale, int32_t *locCache);
-
/*
* Case-maps [srcStart..srcLimit[ but takes
* context [0..srcLength[ into account.
int32_t srcStart, int32_t srcLimit,
UErrorCode *pErrorCode) {
const UChar *s;
- UChar32 c;
+ UChar32 c, c2;
int32_t srcIndex, destIndex;
int32_t locCache;
csc->cpStart=srcIndex;
U8_NEXT(src, srcIndex, srcLimit, c);
csc->cpLimit=srcIndex;
+ if(c<0) {
+ int32_t i=csc->cpStart;
+ while(destIndex<destCapacity && i<srcIndex) {
+ dest[destIndex++]=src[i++];
+ }
+ continue;
+ }
c=map(csm->csp, c, utf8_caseContextIterator, csc, &s, csm->locale, &locCache);
- destIndex=appendResult(dest, destIndex, destCapacity, c, s);
+ if((destIndex<destCapacity) && (c<0 ? (c2=~c)<=0x7f : UCASE_MAX_STRING_LENGTH<c && (c2=c)<=0x7f)) {
+ /* fast path version of appendResult() for ASCII results */
+ dest[destIndex++]=(uint8_t)c2;
+ } else {
+ destIndex=appendResult(dest, destIndex, destCapacity, c, s);
+ }
+ }
+
+ if(destIndex>destCapacity) {
+ *pErrorCode=U_BUFFER_OVERFLOW_ERROR;
+ }
+ return destIndex;
+}
+
+#if !UCONFIG_NO_BREAK_ITERATION
+
+/*
+ * Internal titlecasing function.
+ */
+static int32_t
+_toTitle(UCaseMap *csm,
+ uint8_t *dest, int32_t destCapacity,
+ const uint8_t *src, UCaseContext *csc,
+ int32_t srcLength,
+ UErrorCode *pErrorCode) {
+ UText utext=UTEXT_INITIALIZER;
+ const UChar *s;
+ UChar32 c;
+ int32_t prev, titleStart, titleLimit, index, destIndex, length;
+ UBool isFirstIndex;
+
+ utext_openUTF8(&utext, (const char *)src, srcLength, pErrorCode);
+ if(U_FAILURE(*pErrorCode)) {
+ return 0;
+ }
+ if(csm->iter==NULL) {
+ csm->iter=ubrk_open(UBRK_WORD, csm->locale,
+ NULL, 0,
+ pErrorCode);
+ }
+ ubrk_setUText(csm->iter, &utext, pErrorCode);
+ if(U_FAILURE(*pErrorCode)) {
+ utext_close(&utext);
+ return 0;
+ }
+
+ /* set up local variables */
+ destIndex=0;
+ prev=0;
+ isFirstIndex=TRUE;
+
+ /* titlecasing loop */
+ while(prev<srcLength) {
+ /* find next index where to titlecase */
+ if(isFirstIndex) {
+ isFirstIndex=FALSE;
+ index=ubrk_first(csm->iter);
+ } else {
+ index=ubrk_next(csm->iter);
+ }
+ if(index==UBRK_DONE || index>srcLength) {
+ index=srcLength;
+ }
+
+ /*
+ * 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).
+ *
+ * In this implementation, segment [prev..index[ into 3 parts:
+ * a) uncased characters (copy as-is) [prev..titleStart[
+ * b) first case letter (titlecase) [titleStart..titleLimit[
+ * c) subsequent characters (lowercase) [titleLimit..index[
+ */
+ if(prev<index) {
+ /* find and copy uncased characters [prev..titleStart[ */
+ titleStart=titleLimit=prev;
+ U8_NEXT(src, titleLimit, index, c);
+ if((csm->options&U_TITLECASE_NO_BREAK_ADJUSTMENT)==0 && UCASE_NONE==ucase_getType(csm->csp, c)) {
+ /* Adjust the titlecasing index (titleStart) to the next cased character. */
+ for(;;) {
+ titleStart=titleLimit;
+ if(titleLimit==index) {
+ /*
+ * only uncased characters in [prev..index[
+ * stop with titleStart==titleLimit==index
+ */
+ break;
+ }
+ U8_NEXT(src, titleLimit, index, c);
+ if(UCASE_NONE!=ucase_getType(csm->csp, c)) {
+ break; /* cased letter at [titleStart..titleLimit[ */
+ }
+ }
+ length=titleStart-prev;
+ if(length>0) {
+ if((destIndex+length)<=destCapacity) {
+ uprv_memcpy(dest+destIndex, src+prev, length);
+ }
+ destIndex+=length;
+ }
+ }
+
+ if(titleStart<titleLimit) {
+ /* titlecase c which is from [titleStart..titleLimit[ */
+ csc->cpStart=titleStart;
+ csc->cpLimit=titleLimit;
+ c=ucase_toFullTitle(csm->csp, c, utf8_caseContextIterator, csc, &s, csm->locale, &csm->locCache);
+ destIndex=appendResult(dest, destIndex, destCapacity, c, s);
+
+
+ /* Special case Dutch IJ titlecasing */
+ if ( titleStart+1 < index &&
+ ucase_getCaseLocale(csm->locale,&csm->locCache) == UCASE_LOC_DUTCH &&
+ ( src[titleStart] == 0x0049 || src[titleStart] == 0x0069 ) &&
+ ( src[titleStart+1] == 0x004A || src[titleStart+1] == 0x006A )) {
+ c=0x004A;
+ destIndex=appendResult(dest, destIndex, destCapacity, c, s);
+ titleLimit++;
+ }
+ /* lowercase [titleLimit..index[ */
+ if(titleLimit<index) {
+ if((csm->options&U_TITLECASE_NO_LOWERCASE)==0) {
+ /* Normal operation: Lowercase the rest of the word. */
+ destIndex+=
+ _caseMap(
+ csm, ucase_toFullLower,
+ dest+destIndex, destCapacity-destIndex,
+ src, csc,
+ titleLimit, index,
+ pErrorCode);
+ } else {
+ /* Optionally just copy the rest of the word unchanged. */
+ length=index-titleLimit;
+ if((destIndex+length)<=destCapacity) {
+ uprv_memcpy(dest+destIndex, src+titleLimit, length);
+ }
+ destIndex+=length;
+ }
+ }
+ }
+ }
+
+ prev=index;
+ }
+
+ if(destIndex>destCapacity) {
+ *pErrorCode=U_BUFFER_OVERFLOW_ERROR;
+ }
+ utext_close(&utext);
+ return destIndex;
+}
+
+#endif
+
+static int32_t
+utf8_foldCase(const UCaseProps *csp,
+ uint8_t *dest, int32_t destCapacity,
+ const uint8_t *src, int32_t srcLength,
+ uint32_t options,
+ UErrorCode *pErrorCode) {
+ int32_t srcIndex, destIndex;
+
+ const UChar *s;
+ UChar32 c, c2;
+ int32_t start;
+
+ /* case mapping loop */
+ srcIndex=destIndex=0;
+ while(srcIndex<srcLength) {
+ start=srcIndex;
+ U8_NEXT(src, srcIndex, srcLength, c);
+ if(c<0) {
+ while(destIndex<destCapacity && start<srcIndex) {
+ dest[destIndex++]=src[start++];
+ }
+ continue;
+ }
+ c=ucase_toFullFolding(csp, c, &s, options);
+ if((destIndex<destCapacity) && (c<0 ? (c2=~c)<=0x7f : UCASE_MAX_STRING_LENGTH<c && (c2=c)<=0x7f)) {
+ /* fast path version of appendResult() for ASCII results */
+ dest[destIndex++]=(uint8_t)c2;
+ } else {
+ destIndex=appendResult(dest, destIndex, destCapacity, c, s);
+ }
}
if(destIndex>destCapacity) {
* Implement argument checking and buffer handling
* for string case mapping as a common function.
*/
-enum {
- TO_LOWER,
- TO_UPPER,
- TO_TITLE,
- FOLD_CASE
-};
/* common internal function for public API functions */
const uint8_t *src, int32_t srcLength,
int32_t toWhichCase,
UErrorCode *pErrorCode) {
- UCaseContext csc={ NULL };
int32_t destLength;
/* check argument values */
destLength=0;
- csc.p=(void *)src;
- csc.limit=srcLength;
-
- if(toWhichCase==TO_LOWER) {
- destLength=_caseMap(csm, ucase_toFullLower,
- dest, destCapacity,
- src, &csc,
- 0, srcLength,
- pErrorCode);
- } else /* if(toWhichCase==TO_UPPER) */ {
- destLength=_caseMap(csm, ucase_toFullUpper,
- dest, destCapacity,
- src, &csc,
- 0, srcLength,
- pErrorCode);
+ if(toWhichCase==FOLD_CASE) {
+ destLength=utf8_foldCase(csm->csp, dest, destCapacity, src, srcLength,
+ csm->options, pErrorCode);
+ } else {
+ UCaseContext csc={ NULL };
+
+ csc.p=(void *)src;
+ csc.limit=srcLength;
+
+ if(toWhichCase==TO_LOWER) {
+ destLength=_caseMap(csm, ucase_toFullLower,
+ dest, destCapacity,
+ src, &csc,
+ 0, srcLength,
+ pErrorCode);
+ } else if(toWhichCase==TO_UPPER) {
+ destLength=_caseMap(csm, ucase_toFullUpper,
+ dest, destCapacity,
+ src, &csc,
+ 0, srcLength,
+ pErrorCode);
+ } else /* if(toWhichCase==TO_TITLE) */ {
+#if UCONFIG_NO_BREAK_ITERATION
+ *pErrorCode=U_UNSUPPORTED_ERROR;
+#else
+ /* UCaseMap is actually non-const in toTitle() APIs. */
+ destLength=_toTitle((UCaseMap *)csm, dest, destCapacity,
+ src, &csc, srcLength,
+ pErrorCode);
+#endif
+ }
}
return u_terminateChars((char *)dest, destCapacity, destLength, pErrorCode);
/* public API functions */
-U_DRAFT int32_t U_EXPORT2
+U_CAPI int32_t U_EXPORT2
ucasemap_utf8ToLower(const UCaseMap *csm,
char *dest, int32_t destCapacity,
const char *src, int32_t srcLength,
TO_LOWER, pErrorCode);
}
-U_DRAFT int32_t U_EXPORT2
+U_CAPI int32_t U_EXPORT2
ucasemap_utf8ToUpper(const UCaseMap *csm,
char *dest, int32_t destCapacity,
const char *src, int32_t srcLength,
(const uint8_t *)src, srcLength,
TO_UPPER, pErrorCode);
}
+
+#if !UCONFIG_NO_BREAK_ITERATION
+
+U_CAPI int32_t U_EXPORT2
+ucasemap_utf8ToTitle(UCaseMap *csm,
+ char *dest, int32_t destCapacity,
+ const char *src, int32_t srcLength,
+ UErrorCode *pErrorCode) {
+ return caseMap(csm,
+ (uint8_t *)dest, destCapacity,
+ (const uint8_t *)src, srcLength,
+ TO_TITLE, pErrorCode);
+}
+
+#endif
+
+U_CAPI int32_t U_EXPORT2
+ucasemap_utf8FoldCase(const UCaseMap *csm,
+ char *dest, int32_t destCapacity,
+ const char *src, int32_t srcLength,
+ UErrorCode *pErrorCode) {
+ return caseMap(csm,
+ (uint8_t *)dest, destCapacity,
+ (const uint8_t *)src, srcLength,
+ FOLD_CASE, pErrorCode);
+}
projects / apple / icu.git / blobdiff