mirror of https://github.com/mkerrisk/man-pages
110 lines
2.6 KiB
Plaintext
110 lines
2.6 KiB
Plaintext
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.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved
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.TH "WCTYPE" P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
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.\" wctype
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.SH NAME
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wctype \- define character class
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.SH SYNOPSIS
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.LP
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\fB#include <wctype.h>
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.br
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.sp
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wctype_t wctype(const char *\fP\fIproperty\fP\fB);
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.br
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\fP
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.SH DESCRIPTION
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.LP
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The \fIwctype\fP() function is defined for valid character class names
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as defined in the current locale. The \fIproperty\fP
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argument is a string identifying a generic character class for which
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codeset-specific type information is required. The following
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character class names shall be defined in all locales:
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.TS C
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center; lw(26) lw(26) lw(26).
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T{
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\fB
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.br
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alnum
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.br
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alpha
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.br
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blank
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.br
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cntrl
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.br
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\fP
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T} T{
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\fB
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.br
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digit
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.br
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graph
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.br
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lower
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.br
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print
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.br
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\fP
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T} T{
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\fB
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.br
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punct
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.br
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space
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.br
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upper
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.br
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xdigit
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.br
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\fP
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T}
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.TE
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.LP
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Additional character class names defined in the locale definition
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file (category \fILC_CTYPE )\fP can also be specified.
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.LP
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The function shall return a value of type \fBwctype_t\fP, which can
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be used as the second argument to subsequent calls of \fIiswctype\fP().
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The \fIwctype\fP() function shall determine values of \fBwctype_t\fP
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according to the rules of the coded character set defined by character
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type information in the program's locale (category
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\fILC_CTYPE ).\fP The values returned by \fIwctype\fP() shall be valid
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until a call to \fIsetlocale\fP() that modifies the category \fILC_CTYPE
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\&.\fP
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.SH RETURN VALUE
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.LP
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The \fIwctype\fP() function shall return 0 if the given character
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class name is not valid for the current locale (category
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\fILC_CTYPE );\fP otherwise, it shall return an object of type \fBwctype_t\fP
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that can be used in calls to \fIiswctype\fP().
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.SH ERRORS
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.LP
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No errors are defined.
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.LP
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\fIThe following sections are informative.\fP
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.SH EXAMPLES
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.LP
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None.
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.SH APPLICATION USAGE
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.LP
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None.
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.SH RATIONALE
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.LP
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None.
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.SH FUTURE DIRECTIONS
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.LP
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None.
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.SH SEE ALSO
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.LP
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\fIiswctype\fP() , the Base Definitions volume of IEEE\ Std\ 1003.1-2001,
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\fI<wctype.h>\fP
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.SH COPYRIGHT
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Portions of this text are reprinted and reproduced in electronic form
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from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
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-- Portable Operating System Interface (POSIX), The Open Group Base
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Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
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Electrical and Electronics Engineers, Inc and The Open Group. In the
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event of any discrepancy between this version and the original IEEE and
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The Open Group Standard, the original IEEE and The Open Group Standard
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is the referee document. The original Standard can be obtained online at
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http://www.opengroup.org/unix/online.html .
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