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Improve mbsinit example.
This commit is contained in:
Ulrich Drepper 1999-01-15 16:24:11 +00:00
parent d0ab77802a
commit 37a87f834a
2 changed files with 16 additions and 2 deletions
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ChangeLog
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@ -5,6 +5,7 @@
* manual/charset.texi: More misspelling fixes.
Reported by Tom Tromey <tromey@cygnus.com>.
Improve mbsinit example.
* sysdeps/unix/sysv/linux/vfork.c: Removed.
* sysdeps/unix/sysv/linux/i386/vfork.S: New file.

17
manual/charset.texi
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@ -71,7 +71,7 @@ As shown in some other part of this manual,
there exists a completely new family of functions which can handle texts
of this kind in memory. The most commonly used character set for such
internal wide character representations are Unicode and @w{ISO 10646}.
The former is a subset of the later and used when wide characters are
The former is a subset of the latter and used when wide characters are
chosen to by 2 bytes (@math{= 16} bits) wide. The standard names of the
@cindex UCS2
@cindex UCS4
@ -501,6 +501,8 @@ is declared in @file{wchar.h}.
Code using this function often looks similar to this:
@c Fix the example to explicitly say how to generate the escape sequence
@c to restore the initial state.
@smallexample
@{
mbstate_t state;
@ -510,12 +512,23 @@ Code using this function often looks similar to this:
if (! mbsinit (&state))
@{
/* @r{Emit code to return to initial state.} */
fputs ("@r{whatever needed}", fp);
const char empty[] = "";
const char **srcp = &empty;
wcsrtombs (outbuf, &srcp, outbuflen, &state);
@}
...
@}
@end smallexample
The code to emit the escape sequence to get back to the initial state is
interesting. The @code{wcsrtombs} function can be used to determine the
necessary output code (@pxref{Converting Strings}). Please note that on
GNU systems it is not necessary to perform this extra action for the
conversion from multibyte text ot wide character text since the wide
character encoding is not stateful. But there is nothing mentioned in
any standard which prohibits making @code{wchar_t} using a stateful
encoding.
@node Converting a Character
@subsection Converting Single Characters