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);
DESCRIPTIONunicode_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 ALSOcourier-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)
