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-rw-r--r--wcsmbs/wctob.c41
1 files changed, 37 insertions, 4 deletions
diff --git a/wcsmbs/wctob.c b/wcsmbs/wctob.c
index ce1063a1ec..0461877d32 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];
}