cset(3C)
NAME
cset, csetlen, csetcol, csetno, wcsetno - get information on
EUC codesets
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 pro-
cess 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
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 attri-
butes:
____________________________________________________________
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
| MT-Level | MT-Safe with exceptions |
|_____________________________|_____________________________|
SEE ALSO
setlocale(3C) euclen(3C), attributes(5)
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