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UNICODE_CATEGORY_LOO(3)     Courier Unicode Library    UNICODE_CATEGORY_LOO(3)


NAME

       unicode_category_lookup, unicode_isalnum, unicode_isalpha,
       unicode_isblank, unicode_isdigit, unicode_isgraph, unicode_islower,
       unicode_ispunct, unicode_isspace, unicode_isupper - unicode character
       categorization


SYNOPSIS

       #include <courier-unicode.h>

       uint32_t unicode_category_lookup(unicode_char c);

       int unicode_isalnum(unicode_char c);

       int unicode_isalpha(unicode_char c);

       int unicode_isblank(unicode_char c);

       int unicode_isdigit(unicode_char c);

       int unicode_isgraph(unicode_char c);

       int unicode_islower(unicode_char c);

       int unicode_ispunct(unicode_char c);

       int unicode_isspace(unicode_char c);

       int unicode_isupper(unicode_char c);


DESCRIPTION

       unicode_category_lookup() looks up the unicode character's
       categorization[1].  unicode_category_lookup() returns a 32 bit value.
       The value's UNICODE_CATEGORY_1 bits specify the first level of the
       unicode character's category, with UNICODE_CATEGORY_2,
       UNICODE_CATEGORY_3, and UNICODE_CATEGORY_4 bits specifying the 2nd,
       3rd, and 4th level, if given. A value of 0 for each corresponding bit
       set indicates that no category is specified for this level, for this
       character; otherwise the possible values are defined in
       <courier-unicode.h>.

       The remaining functions implement comparable equivalents of their
       non-unicode versions in the standard C library, as follows:

       unicode_isalnum()
           Returns non-0 for all unicode_isalpha() or unicode_isdigit().

       unicode_isalpha()
           Returns non-0 for all UNICODE_CATEGORY_1_LETTER.

       unicode_isblank()
           Return non-0 for TAB, and all UNICODE_CATEGORY_2_SPACE.

       unicode_isdigit()
           Returns non-0 for all UNICODE_CATEGORY_1_NUMBER |
           UNICODE_CATEGORY_2_DIGIT, only (no third categories).

       unicode_isgraph()
           Returns non-0 for all codepoints above SPACE which are not
           unicode_isspace().

       unicode_islower()
           Returns non-0 for all unicode_isalpha() for which the character is
           equal to unicode_lc(3) of itself.

       unicode_ispunct()
           Returns non-0 for all UNICODE_CATEGORY_1_PUNCTUATION.

       unicode_isspace()
           Returns non-0 for unicode_isblank() or for unicode characters with
           linebreaking properties of BK, CR, LF, NL, and SP.

       unicode_isupper()
           Returns non-0 for all unicode_isalpha() for which the character is
           equal to unicode_uc(3) of itself.


SEE ALSO

       courier-unicode(7), unicode_convert_tocase(3).


AUTHOR

       Sam Varshavchik
           Author


NOTES

        1. unicode character's categorization
           http://unicode.org/notes/tn36/

Courier Unicode Library           07/29/2015           UNICODE_CATEGORY_LOO(3)

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