CSET(3C)CSET(3C)NAME
cset, csetlen, csetcol, csetno, wcsetno - get information on EUC code‐
sets
SYNOPSIS
#include <euc.h>
int csetlen(int codeset);
int csetcol(int codeset);
int csetno(unsigned char c);
#include <widec.h>
int wcsetno(wchar_t pc);
DESCRIPTION
Both csetlen() and csetcol() take a code set number codeset, which
must be 0, 1, 2, or 3. The csetlen() function returns the number of
bytes needed to represent a character of the given Extended Unix Code
(EUC) code set, excluding the single-shift characters SS2 and SS3 for
codesets 2 and 3. The csetcol() function returns the number of columns
a character in the given EUC code set would take on the display.
The csetno() function is implemented as a macro that returns a codeset
number (0, 1, 2, or 3) for the EUC character whose first byte is c.
For example,
#include<euc.h>
...
x+=csetcol(csetno(c));
increments a counter "x" (such as the cursor position) by the width of
the character whose first byte is c.
The wcsetno() function is implemented as a macro that returns a codeset
number (0, 1, 2, or 3) for the given process code character pc. For
example,
#include<euc.h>
#include<widec.h>
...
x+=csetcol(wcsetno(pc));
increments a counter "x" (such as the cursor position) by the width of
the Process Code character pc.
USAGE
These functions work only for the EUC locales.
The cset(), csetlen(), csetcol(), csetno(), and wcsetno() functions can
be used safely in multithreaded applications, as long as setlocale(3C)
is not being called to change the locale.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌───────────────┬─────────────────────────┐
│ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├───────────────┼─────────────────────────┤
│MT-Level │ MT-Safe with exceptions │
└───────────────┴─────────────────────────┘
SEE ALSOsetlocale(3C)euclen(3C), attributes(5)
Nov 16, 2003 CSET(3C)
