NEXTWCTYPE(3) BSD Library Functions Manual NEXTWCTYPE(3)NAME
nextwctype, nextwctype_l -- iterate through character classes
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <wctype.h>
wint_t
nextwctype(wint_t ch, wctype_t wct);
#include <xlocale.h>
wint_t
nextwctype_l(wint_t ch, wctype_t wct, locale_t loc);
DESCRIPTION
The nextwctype() function determines the next character after ch that is a member of character class wct. If ch is -1, the search begins at
the first member of wct.
While the nextwctype() function uses the current locale, the
.Fn nextwctype_l function may be passed a locale directly. See xlocale(3) for more information.
RETURN VALUES
The nextwctype() function returns the next character, or -1 if there are no more.
COMPATIBILITY
This function is a non-standard FreeBSD extension and should not be used where the standard iswctype() function would suffice.
SEE ALSO wctype(3), xlocale(3)HISTORY
The nextwctype() function appeared in FreeBSD 5.4.
BSD July 21, 2005 BSD
Check Out this Related Man Page
WCTYPE(3) BSD Library Functions Manual WCTYPE(3)NAME
iswctype, iswctype_l, wctype, wctype_l -- wide character class functions
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <wctype.h>
int
iswctype(wint_t wc, wctype_t charclass);
wctype_t
wctype(const char *property);
#include <wctype.h>
#include <xlocale.h>
int
iswctype_l(wint_t wc, wctype_t charclass, locale_t loc);
wctype_t
wctype_l(const char *property, locale_t loc);
DESCRIPTION
The wctype() function returns a value of type wctype_t, which represents the requested wide character class and may be used as the second
argument for calls to iswctype().
The following character class names are recognised:
alnum cntrl ideogram print space xdigit
alpha digit lower punct special
blank graph phonogram rune upper
The iswctype() function checks whether the wide character wc is in the character class charclass.
Although the iswctype() and wctype() functions use the current locale, the iswctype_l() and wctype_l() functions may be passed locales
directly. See xlocale(3) for more information.
RETURN VALUES
The iswctype() function returns non-zero if and only if wc has the property described by charclass, or charclass is zero.
The wctype() function returns 0 if property is invalid; otherwise, it returns a value of type wctype_t that can be used in subsequent calls
to iswctype().
EXAMPLES
Reimplement iswalpha(3) in terms of iswctype() and wctype():
int
myiswalpha(wint_t wc)
{
return (iswctype(wc, wctype("alpha")));
}
SEE ALSO ctype(3), nextwctype(3), xlocale(3)STANDARDS
The iswctype() and wctype() functions conform to IEEE Std 1003.1-2001 (``POSIX.1''). The ``ideogram'', ``phonogram'', ``special'', and
``rune'' character classes are extensions.
HISTORY
The iswctype() and wctype() functions first appeared in FreeBSD 5.0.
BSD March 27, 2004 BSD
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