wctrans(3C) Standard C Library Functions wctrans(3C)NAME
wctrans - define character mapping
SYNOPSIS
#include <wctype.h>
wctrans_t wctrans(const char *charclass);
DESCRIPTION
The wctrans() function is defined for valid character mapping names identified in the current locale. The charclass is a string identifying
a generic character mapping name for which codeset-specific information is required. The following character mapping names are defined in
all locales - "tolower" and "toupper".
The function returns a value of type wctrans_t, which can be used as the second argument to subsequent calls of towctrans(3C). The
wctrans() function determines values of wctrans_t according to the rules of the coded character set defined by character mapping informa-
tion in the program's locale (category LC_CTYPE). The values returned by wctrans() are valid until a call to setlocale(3C) that modifies
the category LC_CTYPE.
RETURN VALUES
The wctrans() function returns 0 if the given character mapping name is not valid for the current locale (category LC_CTYPE), otherwise it
returns a non-zero object of type wctrans_t that can be used in calls to towctrans(3C).
ERRORS
The wctrans() function may fail if:
EINVAL The character mapping name pointed to by charclass is not valid in the current locale.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|CSI |Enabled |
+-----------------------------+-----------------------------+
|Interface Stability |Standard |
+-----------------------------+-----------------------------+
|MT-Level |MT-Safe with exceptions |
+-----------------------------+-----------------------------+
SEE ALSO setlocale(3C), towctrans(3C), attributes(5), standards(5)SunOS 5.10 14 Aug 2002 wctrans(3C)
Check Out this Related Man Page
WCTRANS(3) BSD Library Functions Manual WCTRANS(3)NAME
towctrans, towctrans_l, wctrans, wctrans_l -- wide character mapping functions
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <wctype.h>
wint_t
towctrans(wint_t wc, wctrans_t desc);
wctrans_t
wctrans(const char *charclass);
#include <wctype.h>
#include <xlocale.h>
wint_t
towctrans_l(wint_t wc, wctrans_t desc, locale_t loc);
wctrans_t
wctrans_l(const char *charclass, locale_t loc);
DESCRIPTION
The wctrans() function returns a value of type wctrans_t, which represents the requested wide character mapping operation and may be used as
the second argument for calls to towctrans().
The following character mapping names are recognised:
tolower toupper
The towctrans() function transliterates the wide character wc, according to the mapping described by desc.
While the towctrans() and wctrans() functions use the current locale, the towctrans_l() and wctrans_l() functions may be passed locales
directly. See xlocale(3) for more information.
RETURN VALUES
The towctrans() function returns the transliterated character if successful, otherwise it returns the character unchanged and sets errno.
The wctrans() function returns non-zero if successful, otherwise it returns zero and sets errno.
EXAMPLES
Reimplement towupper() in terms of towctrans() and wctrans():
wint_t
mytowupper(wint_t wc)
{
return (towctrans(wc, wctrans("toupper")));
}
ERRORS
The towctrans() function will fail if:
[EINVAL] The supplied desc argument is invalid.
The wctrans() function will fail if:
[EINVAL] The requested mapping name is invalid.
SEE ALSO tolower(3), toupper(3), wctype(3), xlocale(3)STANDARDS
The towctrans() and wctrans() functions conform to IEEE Std 1003.1-2001 (``POSIX.1'').
HISTORY
The towctrans() and wctrans() functions first appeared in FreeBSD 5.0.
BSD October 3, 2002 BSD