/*Checks if the Unicode character can be ignorable in a Java or Unicode identifier.*/
U_CAPI UBool U_EXPORT2
u_isIDIgnorable(UChar32 c) {
if(c<=0x9f) {
return u_isISOControl(c) && !IS_THAT_ASCII_CONTROL_SPACE(c);
} else {
uint32_t props;
GET_PROPS(c, props);
return (UBool)(GET_CATEGORY(props)==U_FORMAT_CHAR);
}
}
/**
* Checks if c is in \p{graph}\p{blank} - \p{cntrl}.
* Implements UCHAR_POSIX_PRINT.
* @internal
*/
U_CFUNC UBool
u_isprintPOSIX(UChar32 c) {
uint32_t props;
GET_PROPS(c, props);
/*
* The only cntrl character in graph+blank is TAB (in blank).
* Here we implement (blank-TAB)=Zs instead of calling u_isblank().
*/
return (UBool)((GET_CATEGORY(props)==U_SPACE_SEPARATOR) || u_isgraphPOSIX(c));
}
U_CAPI UBool U_EXPORT2
u_isblank(UChar32 c) {
if((uint32_t)c<=0x9f) {
return c==9 || c==0x20; /* TAB or SPACE */
} else {
/* Zs */
uint32_t props;
GET_PROPS(c, props);
return (UBool)(GET_CATEGORY(props)==U_SPACE_SEPARATOR);
}
}
U_CAPI UBool U_EXPORT2
u_isxdigit(UChar32 c) {
uint32_t props;
/* check ASCII and Fullwidth ASCII a-fA-F */
if(
(c<=0x66 && c>=0x41 && (c<=0x46 || c>=0x61)) ||
(c>=0xff21 && c<=0xff46 && (c<=0xff26 || c>=0xff41))
) {
return TRUE;
}
GET_PROPS(c, props);
return (UBool)(GET_CATEGORY(props)==U_DECIMAL_DIGIT_NUMBER);
}
/* Checks if ch is a lower case letter.*/
U_CAPI UBool U_EXPORT2
u_islower(UChar32 c) {
uint32_t props;
GET_PROPS(c, props);
return (UBool)(GET_CATEGORY(props)==U_LOWERCASE_LETTER);
}
static uint32_t U_CALLCONV
_enumTypeValue(const void *context, uint32_t value) {
return GET_CATEGORY(value);
}
/* Gets the Unicode character's general category.*/
U_CAPI int8_t U_EXPORT2
u_charType(UChar32 c) {
uint32_t props;
GET_PROPS(c, props);
return (int8_t)GET_CATEGORY(props);
}
/* Checks if ch is a unicode character with assigned character type.*/
U_CAPI UBool U_EXPORT2
u_isdefined(UChar32 c) {
uint32_t props;
GET_PROPS(c, props);
return (UBool)(GET_CATEGORY(props)!=0);
}
/* Checks if ch is a decimal digit. */
U_CAPI UBool U_EXPORT2
u_isdigit(UChar32 c) {
uint32_t props;
GET_PROPS(c, props);
return (UBool)(GET_CATEGORY(props)==U_DECIMAL_DIGIT_NUMBER);
}
/* Checks if ch is a title case letter; usually upper case letters.*/
U_CAPI UBool U_EXPORT2
u_istitle(UChar32 c) {
uint32_t props;
GET_PROPS(c, props);
return (UBool)(GET_CATEGORY(props)==U_TITLECASE_LETTER);
}
static void U_CALLCONV
numericLineFn(void *context,
char *fields[][2], int32_t fieldCount,
UErrorCode *pErrorCode) {
Props newProps={ 0 };
char *s, *numberLimit;
uint32_t start, end, value, oldProps32;
char c;
UBool isFraction;
/* get the code point range */
u_parseCodePointRange(fields[0][0], &start, &end, pErrorCode);
if(U_FAILURE(*pErrorCode)) {
fprintf(stderr, "genprops: syntax error in DerivedNumericValues.txt field 0 at %s\n", fields[0][0]);
exit(*pErrorCode);
}
/*
* Ignore the
* # @missing: 0000..10FFFF; NaN
* line from Unicode 5.1's DerivedNumericValues.txt:
* The following code cannot parse "NaN", and we don't want to overwrite
* the numeric values for all characters after reading most
* from UnicodeData.txt already.
*/
if(start==0 && end==0x10ffff) {
return;
}
/* check if the numeric value is a fraction (this code does not handle any) */
isFraction=FALSE;
s=uprv_strchr(fields[1][0], '.');
if(s!=NULL) {
numberLimit=s+1;
while('0'<=(c=*numberLimit++) && c<='9') {
if(c!='0') {
isFraction=TRUE;
break;
}
}
}
if(isFraction) {
value=0;
} else {
/* parse numeric value */
s=(char *)u_skipWhitespace(fields[1][0]);
/* try large, single-significant-digit numbers, may otherwise overflow strtoul() */
if('1'<=s[0] && s[0]<='9' && s[1]=='0' && s[2]=='0') {
/* large integers are encoded in a special way, see store.c */
uint8_t exp=0;
value=s[0]-'0';
numberLimit=s;
while(*(++numberLimit)=='0') {
++exp;
}
newProps.exponent=exp;
} else {
/* normal number parsing */
value=(uint32_t)uprv_strtoul(s, &numberLimit, 10);
}
if(numberLimit<=s || (*numberLimit!='.' && u_skipWhitespace(numberLimit)!=fields[1][1]) || value>=0x80000000) {
fprintf(stderr, "genprops: syntax error in DerivedNumericValues.txt field 1 at %s\n", fields[0][0]);
exit(U_PARSE_ERROR);
}
}
/*
* Unicode 4.0.1 removes the third column that used to list the numeric type.
* Assume that either the data is the same as in UnicodeData.txt,
* or else that the numeric type is "numeric".
* This should work because we only expect to add numeric values for
* Han characters; for those, UnicodeData.txt lists only ranges without
* specific properties for single characters.
*/
/* set the new numeric value */
newProps.code=start;
newProps.numericValue=(int32_t)value; /* newly parsed numeric value */
/* the exponent may have been set above */
for(; start<=end; ++start) {
uint32_t newProps32;
int32_t oldNtv;
oldProps32=getProps(start);
oldNtv=(int32_t)GET_NUMERIC_TYPE_VALUE(oldProps32);
if(isFraction) {
if(UPROPS_NTV_FRACTION_START<=oldNtv && oldNtv<UPROPS_NTV_LARGE_START) {
/* this code point was already listed with its numeric value in UnicodeData.txt */
continue;
} else {
fprintf(stderr, "genprops: not prepared for new fractions in DerivedNumericValues.txt field 1 at %s\n", fields[1][0]);
exit(U_PARSE_ERROR);
}
}
/*
* For simplicity, and because we only expect to set numeric values for Han characters,
* for now we only allow to set these values for Lo characters.
*/
if(oldNtv==UPROPS_NTV_NONE && GET_CATEGORY(oldProps32)!=U_OTHER_LETTER) {
fprintf(stderr, "genprops error: new numeric value for a character other than Lo in DerivedNumericValues.txt at %s\n", fields[0][0]);
exit(U_PARSE_ERROR);
}
/* verify that we do not change an existing value (fractions were excluded above) */
if(oldNtv!=UPROPS_NTV_NONE) {
/* the code point already has a value stored */
newProps.numericType=UPROPS_NTV_GET_TYPE(oldNtv);
newProps32=makeProps(&newProps);
if(oldNtv!=GET_NUMERIC_TYPE_VALUE(newProps32)) {
fprintf(stderr, "genprops error: new numeric value differs from old one for U+%04lx\n", (long)start);
exit(U_PARSE_ERROR);
}
/* same value, continue */
} else {
/* the code point is getting a new numeric value */
newProps.numericType=(uint8_t)U_NT_NUMERIC; /* assumed numeric type, see Unicode 4.0.1 comment */
newProps32=makeProps(&newProps);
if(beVerbose) {
printf("adding U+%04x numeric type %d encoded-numeric-type-value 0x%03x from %s\n",
(int)start, U_NT_NUMERIC, (int)GET_NUMERIC_TYPE_VALUE(newProps32), fields[0][0]);
}
addProps(start, newProps32|GET_CATEGORY(oldProps32));
}
}
}
