C++ GET_CATEGORY函数代码示例

/*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);
}

//.........这里部分代码省略.........
    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));
        }
    }
}