U_CAPI UChar32 U_EXPORT2
ucase_toupper(const UCaseProps *csp, UChar32 c) {
uint16_t props=UTRIE2_GET16(&csp->trie, c);
if(!PROPS_HAS_EXCEPTION(props)) {
if(UCASE_GET_TYPE(props)==UCASE_LOWER) {
c+=UCASE_GET_DELTA(props);
}
} else {
const uint16_t *pe=GET_EXCEPTIONS(csp, props);
uint16_t excWord=*pe++;
if(HAS_SLOT(excWord, UCASE_EXC_UPPER)) {
GET_SLOT_VALUE(excWord, UCASE_EXC_UPPER, pe, c);
}
}
return c;
}
/* return the simple case folding mapping for c */
U_CAPI UChar32 U_EXPORT2
ucase_fold(const UCaseProps *csp, UChar32 c, uint32_t options) {
uint16_t props=UTRIE2_GET16(&csp->trie, c);
if(!PROPS_HAS_EXCEPTION(props)) {
if(UCASE_GET_TYPE(props)>=UCASE_UPPER) {
c+=UCASE_GET_DELTA(props);
}
} else {
const uint16_t *pe=GET_EXCEPTIONS(csp, props);
uint16_t excWord=*pe++;
int32_t idx;
if(excWord&UCASE_EXC_CONDITIONAL_FOLD) {
/* special case folding mappings, hardcoded */
if((options&_FOLD_CASE_OPTIONS_MASK)==U_FOLD_CASE_DEFAULT) {
/* default mappings */
if(c==0x49) {
/* 0049; C; 0069; # LATIN CAPITAL LETTER I */
return 0x69;
} else if(c==0x130) {
/* no simple case folding for U+0130 */
return c;
}
} else {
/* Turkic mappings */
if(c==0x49) {
/* 0049; T; 0131; # LATIN CAPITAL LETTER I */
return 0x131;
} else if(c==0x130) {
/* 0130; T; 0069; # LATIN CAPITAL LETTER I WITH DOT ABOVE */
return 0x69;
}
}
}
if(HAS_SLOT(excWord, UCASE_EXC_FOLD)) {
idx=UCASE_EXC_FOLD;
} else if(HAS_SLOT(excWord, UCASE_EXC_LOWER)) {
idx=UCASE_EXC_LOWER;
} else {
return c;
}
GET_SLOT_VALUE(excWord, idx, pe, c);
}
return c;
}
uint32_t
CasePropsBuilder::makeExcProps(UChar32 c, uint32_t value, UErrorCode &errorCode) {
if(U_FAILURE(errorCode)) { return 0; }
if(excPropsCount==MAX_EXC_COUNT) {
fprintf(stderr, "genprops error: casepropsbuilder: too many exceptions\n");
errorCode=U_INDEX_OUTOFBOUNDS_ERROR;
return 0;
}
LocalPointer<ExcProps> newExcProps(new ExcProps);
if(newExcProps==NULL) {
fprintf(stderr,
"genprops error: casepropsbuilder out of memory allocating "
"exceptions properties\n");
errorCode=U_MEMORY_ALLOCATION_ERROR;
return 0;
}
if((value&UCASE_TYPE_MASK)>UCASE_NONE) {
// Decode the simple case mapping.
UChar32 next=c+UCASE_GET_DELTA(value);
if(next!=c) {
UniProps &p=newExcProps->props;
if((value&UCASE_TYPE_MASK)==UCASE_LOWER) {
p.suc=p.stc=next;
} else {
p.slc=next;
}
}
}
value&=~(UGENCASE_EXC_MASK|UCASE_DELTA_MASK); // remove previous simple mapping
value|=(uint32_t)excPropsCount<<UGENCASE_EXC_SHIFT;
value|=UCASE_EXCEPTION;
excProps[excPropsCount++]=newExcProps.orphan();
return value;
}
U_CAPI int32_t U_EXPORT2
ucase_toFullLower(const UCaseProps *csp, UChar32 c,
UCaseContextIterator *iter, void *context,
const UChar **pString,
const char *locale, int32_t *locCache)
{
UChar32 result=c;
uint16_t props=UTRIE2_GET16(&csp->trie, c);
if(!PROPS_HAS_EXCEPTION(props)) {
if(UCASE_GET_TYPE(props)>=UCASE_UPPER) {
result=c+UCASE_GET_DELTA(props);
}
} else {
const uint16_t *pe=GET_EXCEPTIONS(csp, props), *pe2;
uint16_t excWord=*pe++;
int32_t full;
pe2=pe;
if(excWord&UCASE_EXC_CONDITIONAL_SPECIAL) {
/* use hardcoded conditions and mappings */
int32_t loc=ucase_getCaseLocale(locale, locCache);
/*
* Test for conditional mappings first
* (otherwise the unconditional default mappings are always taken),
* then test for characters that have unconditional mappings in SpecialCasing.txt,
* then get the UnicodeData.txt mappings.
*/
if( loc==UCASE_LOC_LITHUANIAN &&
/* base characters, find accents above */
(((c==0x49 || c==0x4a || c==0x12e) &&
isFollowedByMoreAbove(csp, iter, context)) ||
/* precomposed with accent above, no need to find one */
(c==0xcc || c==0xcd || c==0x128))
) {
/*
# Lithuanian
# Lithuanian retains the dot in a lowercase i when followed by accents.
# Introduce an explicit dot above when lowercasing capital I's and J's
# whenever there are more accents above.
# (of the accents used in Lithuanian: grave, acute, tilde above, and ogonek)
0049; 0069 0307; 0049; 0049; lt More_Above; # LATIN CAPITAL LETTER I
004A; 006A 0307; 004A; 004A; lt More_Above; # LATIN CAPITAL LETTER J
012E; 012F 0307; 012E; 012E; lt More_Above; # LATIN CAPITAL LETTER I WITH OGONEK
00CC; 0069 0307 0300; 00CC; 00CC; lt; # LATIN CAPITAL LETTER I WITH GRAVE
00CD; 0069 0307 0301; 00CD; 00CD; lt; # LATIN CAPITAL LETTER I WITH ACUTE
0128; 0069 0307 0303; 0128; 0128; lt; # LATIN CAPITAL LETTER I WITH TILDE
*/
switch(c) {
case 0x49: /* LATIN CAPITAL LETTER I */
*pString=iDot;
return 2;
case 0x4a: /* LATIN CAPITAL LETTER J */
*pString=jDot;
return 2;
case 0x12e: /* LATIN CAPITAL LETTER I WITH OGONEK */
*pString=iOgonekDot;
return 2;
case 0xcc: /* LATIN CAPITAL LETTER I WITH GRAVE */
*pString=iDotGrave;
return 3;
case 0xcd: /* LATIN CAPITAL LETTER I WITH ACUTE */
*pString=iDotAcute;
return 3;
case 0x128: /* LATIN CAPITAL LETTER I WITH TILDE */
*pString=iDotTilde;
return 3;
default:
return 0; /* will not occur */
}
/* # Turkish and Azeri */
} else if(loc==UCASE_LOC_TURKISH && c==0x130) {
/*
# I and i-dotless; I-dot and i are case pairs in Turkish and Azeri
# The following rules handle those cases.
0130; 0069; 0130; 0130; tr # LATIN CAPITAL LETTER I WITH DOT ABOVE
0130; 0069; 0130; 0130; az # LATIN CAPITAL LETTER I WITH DOT ABOVE
*/
return 0x69;
} else if(loc==UCASE_LOC_TURKISH && c==0x307 && isPrecededBy_I(csp, iter, context)) {
/*
# When lowercasing, remove dot_above in the sequence I + dot_above, which will turn into i.
# This matches the behavior of the canonically equivalent I-dot_above
0307; ; 0307; 0307; tr After_I; # COMBINING DOT ABOVE
0307; ; 0307; 0307; az After_I; # COMBINING DOT ABOVE
*/
return 0; /* remove the dot (continue without output) */
} else if(loc==UCASE_LOC_TURKISH && c==0x49 && !isFollowedByDotAbove(csp, iter, context)) {
/*
# When lowercasing, unless an I is before a dot_above, it turns into a dotless i.
0049; 0131; 0049; 0049; tr Not_Before_Dot; # LATIN CAPITAL LETTER I
0049; 0131; 0049; 0049; az Not_Before_Dot; # LATIN CAPITAL LETTER I
*/
return 0x131;
} else if(c==0x130) {
/*
# Preserve canonical equivalence for I with dot. Turkic is handled below.
0130; 0069 0307; 0130; 0130; # LATIN CAPITAL LETTER I WITH DOT ABOVE
*/
*pString=iDot;
return 2;
} else if( c==0x3a3 &&
!isFollowedByCasedLetter(csp, iter, context, 1) &&
isFollowedByCasedLetter(csp, iter, context, -1) /* -1=preceded */
) {
/* greek capital sigma maps depending on surrounding cased letters (see SpecialCasing.txt) */
/*
# Special case for final form of sigma
03A3; 03C2; 03A3; 03A3; Final_Sigma; # GREEK CAPITAL LETTER SIGMA
*/
return 0x3c2; /* greek small final sigma */
} else {
/* no known conditional special case mapping, use a normal mapping */
}
} else if(HAS_SLOT(excWord, UCASE_EXC_FULL_MAPPINGS)) {
GET_SLOT_VALUE(excWord, UCASE_EXC_FULL_MAPPINGS, pe, full);
full&=UCASE_FULL_LOWER;
if(full!=0) {
/* set the output pointer to the lowercase mapping */
*pString=pe+1;
/* return the string length */
return full;
}
}
if(HAS_SLOT(excWord, UCASE_EXC_LOWER)) {
GET_SLOT_VALUE(excWord, UCASE_EXC_LOWER, pe2, result);
}
}
return (result==c) ? ~result : result;
}
U_CFUNC void U_EXPORT2
ucase_addCaseClosure(const UCaseProps *csp, UChar32 c, const USetAdder *sa) {
uint16_t props;
/*
* Hardcode the case closure of i and its relatives and ignore the
* data file data for these characters.
* The Turkic dotless i and dotted I with their case mapping conditions
* and case folding option make the related characters behave specially.
* This code matches their closure behavior to their case folding behavior.
*/
switch(c) {
case 0x49:
/* regular i and I are in one equivalence class */
sa->add(sa->set, 0x69);
return;
case 0x69:
sa->add(sa->set, 0x49);
return;
case 0x130:
/* dotted I is in a class with <0069 0307> (for canonical equivalence with <0049 0307>) */
sa->addString(sa->set, iDot, 2);
return;
case 0x131:
/* dotless i is in a class by itself */
return;
default:
/* otherwise use the data file data */
break;
}
props=UTRIE2_GET16(&csp->trie, c);
if(!PROPS_HAS_EXCEPTION(props)) {
if(UCASE_GET_TYPE(props)!=UCASE_NONE) {
/* add the one simple case mapping, no matter what type it is */
int32_t delta=UCASE_GET_DELTA(props);
if(delta!=0) {
sa->add(sa->set, c+delta);
}
}
} else {
/*
* c has exceptions, so there may be multiple simple and/or
* full case mappings. Add them all.
*/
const uint16_t *pe0, *pe=GET_EXCEPTIONS(csp, props);
const UChar *closure;
uint16_t excWord=*pe++;
int32_t idx, closureLength, fullLength, length;
pe0=pe;
/* add all simple case mappings */
for(idx=UCASE_EXC_LOWER; idx<=UCASE_EXC_TITLE; ++idx) {
if(HAS_SLOT(excWord, idx)) {
pe=pe0;
GET_SLOT_VALUE(excWord, idx, pe, c);
sa->add(sa->set, c);
}
}
/* get the closure string pointer & length */
if(HAS_SLOT(excWord, UCASE_EXC_CLOSURE)) {
pe=pe0;
GET_SLOT_VALUE(excWord, UCASE_EXC_CLOSURE, pe, closureLength);
closureLength&=UCASE_CLOSURE_MAX_LENGTH; /* higher bits are reserved */
closure=(const UChar *)pe+1; /* behind this slot, unless there are full case mappings */
} else {
closureLength=0;
closure=NULL;
}
/* add the full case folding */
if(HAS_SLOT(excWord, UCASE_EXC_FULL_MAPPINGS)) {
pe=pe0;
GET_SLOT_VALUE(excWord, UCASE_EXC_FULL_MAPPINGS, pe, fullLength);
/* start of full case mapping strings */
++pe;
fullLength&=0xffff; /* bits 16 and higher are reserved */
/* skip the lowercase result string */
pe+=fullLength&UCASE_FULL_LOWER;
fullLength>>=4;
/* add the full case folding string */
length=fullLength&0xf;
if(length!=0) {
sa->addString(sa->set, (const UChar *)pe, length);
pe+=length;
}
/* skip the uppercase and titlecase strings */
fullLength>>=4;
pe+=fullLength&0xf;
fullLength>>=4;
pe+=fullLength;
closure=(const UChar *)pe; /* behind full case mappings */
}
/* add each code point in the closure string */
for(idx=0; idx<closureLength;) {
U16_NEXT_UNSAFE(closure, idx, c);
sa->add(sa->set, c);
}
}
}
U_CAPI int32_t U_EXPORT2
ucase_toFullFolding(const UCaseProps *csp, UChar32 c,
const UChar **pString,
uint32_t options)
{
UChar32 result=c;
uint16_t props=UTRIE2_GET16(&csp->trie, c);
if(!PROPS_HAS_EXCEPTION(props)) {
if(UCASE_GET_TYPE(props)>=UCASE_UPPER) {
result=c+UCASE_GET_DELTA(props);
}
} else {
const uint16_t *pe=GET_EXCEPTIONS(csp, props), *pe2;
uint16_t excWord=*pe++;
int32_t full, idx;
pe2=pe;
if(excWord&UCASE_EXC_CONDITIONAL_FOLD) {
/* use hardcoded conditions and mappings */
if((options&_FOLD_CASE_OPTIONS_MASK)==U_FOLD_CASE_DEFAULT) {
/* default mappings */
if(c==0x49) {
/* 0049; C; 0069; # LATIN CAPITAL LETTER I */
return 0x69;
} else if(c==0x130) {
/* 0130; F; 0069 0307; # LATIN CAPITAL LETTER I WITH DOT ABOVE */
*pString=iDot;
return 2;
}
} else {
/* Turkic mappings */
if(c==0x49) {
/* 0049; T; 0131; # LATIN CAPITAL LETTER I */
return 0x131;
} else if(c==0x130) {
/* 0130; T; 0069; # LATIN CAPITAL LETTER I WITH DOT ABOVE */
return 0x69;
}
}
} else if(HAS_SLOT(excWord, UCASE_EXC_FULL_MAPPINGS)) {
GET_SLOT_VALUE(excWord, UCASE_EXC_FULL_MAPPINGS, pe, full);
/* start of full case mapping strings */
++pe;
/* skip the lowercase result string */
pe+=full&UCASE_FULL_LOWER;
full=(full>>4)&0xf;
if(full!=0) {
/* set the output pointer to the result string */
*pString=pe;
/* return the string length */
return full;
}
}
if(HAS_SLOT(excWord, UCASE_EXC_FOLD)) {
idx=UCASE_EXC_FOLD;
} else if(HAS_SLOT(excWord, UCASE_EXC_LOWER)) {
idx=UCASE_EXC_LOWER;
} else {
return ~c;
}
GET_SLOT_VALUE(excWord, idx, pe2, result);
}
return (result==c) ? ~result : result;
}
/* internal */
static int32_t
toUpperOrTitle(const UCaseProps *csp, UChar32 c,
UCaseContextIterator *iter, void *context,
const UChar **pString,
const char *locale, int32_t *locCache,
UBool upperNotTitle) {
UChar32 result=c;
uint16_t props=UTRIE2_GET16(&csp->trie, c);
if(!PROPS_HAS_EXCEPTION(props)) {
if(UCASE_GET_TYPE(props)==UCASE_LOWER) {
result=c+UCASE_GET_DELTA(props);
}
} else {
const uint16_t *pe=GET_EXCEPTIONS(csp, props), *pe2;
uint16_t excWord=*pe++;
int32_t full, idx;
pe2=pe;
if(excWord&UCASE_EXC_CONDITIONAL_SPECIAL) {
/* use hardcoded conditions and mappings */
int32_t loc=ucase_getCaseLocale(locale, locCache);
if(loc==UCASE_LOC_TURKISH && c==0x69) {
/*
# Turkish and Azeri
# I and i-dotless; I-dot and i are case pairs in Turkish and Azeri
# The following rules handle those cases.
# When uppercasing, i turns into a dotted capital I
0069; 0069; 0130; 0130; tr; # LATIN SMALL LETTER I
0069; 0069; 0130; 0130; az; # LATIN SMALL LETTER I
*/
return 0x130;
} else if(loc==UCASE_LOC_LITHUANIAN && c==0x307 && isPrecededBySoftDotted(csp, iter, context)) {
/*
# Lithuanian
# Lithuanian retains the dot in a lowercase i when followed by accents.
# Remove DOT ABOVE after "i" with upper or titlecase
0307; 0307; ; ; lt After_Soft_Dotted; # COMBINING DOT ABOVE
*/
return 0; /* remove the dot (continue without output) */
} else {
/* no known conditional special case mapping, use a normal mapping */
}
} else if(HAS_SLOT(excWord, UCASE_EXC_FULL_MAPPINGS)) {
GET_SLOT_VALUE(excWord, UCASE_EXC_FULL_MAPPINGS, pe, full);
/* start of full case mapping strings */
++pe;
/* skip the lowercase and case-folding result strings */
pe+=full&UCASE_FULL_LOWER;
full>>=4;
pe+=full&0xf;
full>>=4;
if(upperNotTitle) {
full&=0xf;
} else {
/* skip the uppercase result string */
pe+=full&0xf;
full=(full>>4)&0xf;
}
if(full!=0) {
/* set the output pointer to the result string */
*pString=pe;
/* return the string length */
return full;
}
}
if(!upperNotTitle && HAS_SLOT(excWord, UCASE_EXC_TITLE)) {
idx=UCASE_EXC_TITLE;
} else if(HAS_SLOT(excWord, UCASE_EXC_UPPER)) {
/* here, titlecase is same as uppercase */
idx=UCASE_EXC_UPPER;
} else {
return ~c;
}
GET_SLOT_VALUE(excWord, idx, pe2, result);
}
return (result==c) ? ~result : result;
}
