diff options
Diffstat (limited to 'wcsmbs/wctob.c')
| -rw-r--r-- | wcsmbs/wctob.c | 41 |
1 files changed, 37 insertions, 4 deletions
diff --git a/wcsmbs/wctob.c b/wcsmbs/wctob.c index ce1063a..0461877 100644 --- a/wcsmbs/wctob.c +++ b/wcsmbs/wctob.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1996, 1997 Free Software Foundation, Inc. +/* Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1996. @@ -17,15 +17,48 @@ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +#include <gconv.h> #include <stdio.h> +#include <string.h> #include <wchar.h> +#include <wcsmbsload.h> -/* We use UTF8 encoding for multibyte strings and therefore a valid - one byte multibyte string only can have a value from 0 to 0x7f. */ int wctob (c) wint_t c; { - return (c >= 0 && c <= 0x7f) ? c : EOF; + char buf[MB_LEN_MAX]; + struct gconv_step_data data; + wchar_t inbuf[1]; + size_t inbytes; + size_t converted; + int status; + + /* Tell where we want the result. */ + data.outbuf = (char *) buf; + data.outbufavail = 0; + data.outbufsize = MB_LEN_MAX; + data.is_last = 1; + data.statep = &data.__state; + + /* Make sure we start in the initial state. */ + memset (&data.__state, '\0', sizeof (mbstate_t)); + + /* Make sure we use the correct function. */ + update_conversion_ptrs (); + + /* Create the input string. */ + inbuf[0] = c; + inbytes = sizeof (wchar_t); + + status = (*__wcsmbs_gconv_fcts.tomb->fct) (__wcsmbs_gconv_fcts.tomb, &data, + (const char *) inbuf, &inbytes, + &converted, 0); + /* The conversion failed or the output is too long. */ + if (status != GCONV_OK && status != GCONV_FULL_OUTPUT + || data.outbufavail != 1) + return WEOF; + + return buf[0]; } |