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-rw-r--r--wcsmbs/mbschr.c60
1 files changed, 60 insertions, 0 deletions
diff --git a/wcsmbs/mbschr.c b/wcsmbs/mbschr.c
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+++ b/wcsmbs/mbschr.c
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+/* Copyright (C) 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <mbstr.h>
+#include <stdlib.h>
+
+#define __need_wchar_t
+#include <stddef.h>
+
+
+/* Find the first occurence of MBC in MBS. */
+char *
+mbschr (mbs, mbc)
+ const char *mbs;
+ mbchar_t mbc;
+{
+ int clen;
+ wchar_t wc;
+ wchar_t c;
+
+ /* Reset multibyte characters to their initial state. */
+ (void) mblen ((char *) NULL, 0);
+
+ clen = mbtowc (&wc, (char *) &mbc, MB_CUR_MAX);
+ if (clen < 0)
+ /* FIXME: search character is illegal. */
+ return NULL;
+ else if (clen == 0)
+ wc = L'\0';
+
+ clen = 0;
+ do
+ {
+ mbs += clen;
+ clen = mbtowc (&c, mbs, MB_CUR_MAX);
+ }
+ while (clen > 0 && c != wc);
+
+ if (clen < 0 || (clen == 0 && wc != L'\0'))
+ /* FIXME: clen < 0 means illegal character in string. */
+ return NULL;
+
+ return (char *) mbs;
+}
+