next citrus step.

reviewed by millert, otto, kevlo, naddy, kettenis...
libc+libstdc++ bump

1 files changed, 90 insertions, 0 deletions

diff --git a/lib/libc/stdio/fgetwc.c b/lib/libc/stdio/fgetwc.c
new file mode 100644
index 00000000000..8da50877264
--- /dev/null
+++ b/lib/libc/stdio/fgetwc.c
@@ -0,0 +1,90 @@
+/*	$OpenBSD: fgetwc.c,v 1.1 2005/06/17 20:40:32 espie Exp $	*/
+/* $NetBSD: fgetwc.c,v 1.3 2003/03/07 07:11:36 tshiozak Exp $ */
+
+/*-
+ * Copyright (c)2001 Citrus Project,
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $Citrus$
+ */
+
+#include <errno.h>
+#include <stdio.h>
+#include <wchar.h>
+#include "local.h"
+
+wint_t
+__fgetwc_unlock(FILE *fp)
+{
+	struct wchar_io_data *wcio;
+	mbstate_t *st;
+	wchar_t wc;
+	size_t size;
+
+	_SET_ORIENTATION(fp, 1);
+	wcio = WCIO_GET(fp);
+	if (wcio == 0) {
+		errno = ENOMEM;
+		return WEOF;
+	}
+
+	/* if there're ungetwc'ed wchars, use them */
+	if (wcio->wcio_ungetwc_inbuf) {
+		wc = wcio->wcio_ungetwc_buf[--wcio->wcio_ungetwc_inbuf];
+
+		return wc;
+	}
+
+	st = &wcio->wcio_mbstate_in;
+
+	do {
+		char c;
+		int ch = __sgetc(fp);
+
+		if (ch == EOF) {
+			return WEOF;
+		}
+
+		c = ch;
+		size = mbrtowc(&wc, &c, 1, st);
+		if (size == (size_t)-1) {
+			errno = EILSEQ;
+			return WEOF;
+		}
+	} while (size == (size_t)-2);
+
+	return wc;
+}
+
+wint_t
+fgetwc(FILE *fp)
+{
+	wint_t r;
+
+	flockfile(fp);
+	r = __fgetwc_unlock(fp);
+	funlockfile(fp);
+
+	return (r);
+}