b334e6660a
* libc/stdio/local.h (CHECK_INIT): Evaluate argument only once. (CHECK_STD_INIT): Likewise. * libc/stdio/fgetc.c (fgetc): Use local variable for _REENT. * libc/stdio/fgetwc.c (fwgetc): Likewise. * libc/stdio/fgetws.c (fgetws): Likewise. * libc/stdio/fputc.c (fputc): Likewise. * libc/stdio/fputwc.c (fputwc): Likewise. * libc/stdio/fputws.c (fputws): Likewise. * libc/stdio/getc.c (getc): Likewise. * libc/stdio/getchar.c (_getchar_r): Likewise. * libc/stdio/putc.c (putc): Likewise. * libc/stdio/putchar.c (putchar): Likewise. * libc/stdio/scanf.c (scanf): Likewise. * libc/stdio/setvbuf.c (setvbuf): Likewise. * libc/stdio/ungetwc.c (ungetwc): Likewise. * libc/stdio/vfscanf.c (VFSCANF): Likewise. * libc/stdio/vfwscanf.c (VFWSCANF): Likewise. * libc/stdio/viprintf.c (viprintf): Likewise. * libc/stdio/viscanf.c (viscanf): Likewise. * libc/stdio/vprintf.c (vprintf): Likewise. * libc/stdio/vscanf.c (vscanf): Likewise. * libc/stdio/vwprintf.c (vwprintf): Likewise. * libc/stdio/vwscanf.c (vwscanf): Likewise. * libc/stdio/wscanf.c (wscanf): Likewise. * libc/stdlib/ecvtbuf.c (fcvtbuf): Likewise. (fcvtbuf): Likewise. (ecvtbuf): Likewise. (ecvtbuf): Likewise. * libc/stdlib/mblen.c (mblen): Likewise. * libc/stdlib/mbrlen.c (mbrlen): Likewise. * libc/stdlib/mbrtowc.c (mbrtowc): Likewise. * libc/stdlib/mbtowc.c (mbtowc): Likewise. * libc/stdlib/rand.c (srand): Likewise. (rand): Likewise. * libc/stdlib/wcrtomb.c (wcrtomb): Likewise. * libc/stdlib/wctob.c (wctob): Likewise. * libc/stdlib/wctomb.c (wctomb): Likewise. * libc/string/strtok.c (strtok): Likewise. * libc/time/asctime.c (asctime): Likewise. * libc/time/gmtime.c (gmtime): Likewise. * libc/time/lcltime.c (lcltime): Likewise.
82 lines
2 KiB
C
82 lines
2 KiB
C
/*
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FUNCTION
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<<wctomb>>---minimal wide char to multibyte converter
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INDEX
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wctomb
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ANSI_SYNOPSIS
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#include <stdlib.h>
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int wctomb(char *<[s]>, wchar_t <[wchar]>);
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TRAD_SYNOPSIS
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#include <stdlib.h>
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int wctomb(<[s]>, <[wchar]>)
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char *<[s]>;
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wchar_t <[wchar]>;
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DESCRIPTION
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When _MB_CAPABLE is not defined, this is a minimal ANSI-conforming
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implementation of <<wctomb>>. The
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only ``wide characters'' recognized are single bytes,
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and they are ``converted'' to themselves.
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When _MB_CAPABLE is defined, this routine calls <<_wctomb_r>> to perform
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the conversion, passing a state variable to allow state dependent
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decoding. The result is based on the locale setting which may
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be restricted to a defined set of locales.
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Each call to <<wctomb>> modifies <<*<[s]>>> unless <[s]> is a null
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pointer or _MB_CAPABLE is defined and <[wchar]> is invalid.
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RETURNS
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This implementation of <<wctomb>> returns <<0>> if
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<[s]> is <<NULL>>; it returns <<-1>> if _MB_CAPABLE is enabled
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and the wchar is not a valid multi-byte character, it returns <<1>>
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if _MB_CAPABLE is not defined or the wchar is in reality a single
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byte character, otherwise it returns the number of bytes in the
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multi-byte character.
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PORTABILITY
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<<wctomb>> is required in the ANSI C standard. However, the precise
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effects vary with the locale.
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<<wctomb>> requires no supporting OS subroutines.
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*/
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#ifndef _REENT_ONLY
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#include <newlib.h>
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#include <stdlib.h>
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#include <errno.h>
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#include "local.h"
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int
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_DEFUN (wctomb, (s, wchar),
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char *s _AND
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wchar_t wchar)
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{
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#ifdef _MB_CAPABLE
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struct _reent *reent = _REENT;
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_REENT_CHECK_MISC(reent);
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return __wctomb (reent, s, wchar, __locale_charset (),
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&(_REENT_WCTOMB_STATE(reent)));
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#else /* not _MB_CAPABLE */
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if (s == NULL)
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return 0;
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/* Verify that wchar is a valid single-byte character. */
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if ((size_t)wchar >= 0x100) {
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errno = EILSEQ;
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return -1;
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}
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*s = (char) wchar;
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return 1;
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#endif /* not _MB_CAPABLE */
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}
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#endif /* !_REENT_ONLY */
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