1 files changed, 142 insertions, 0 deletions
diff --git a/usr/src/lib/libc/port/locale/fgetwc.c b/usr/src/lib/libc/port/locale/fgetwc.c
new file mode 100644
index 0000000000..f3d0fd8728
--- /dev/null
+++ b/usr/src/lib/libc/port/locale/fgetwc.c
@@ -0,0 +1,142 @@
+/*
+ * Copyright (c) 2002-2004 Tim J. Robbins.
+ * 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.
+ */
+/*
+ * Copyright 2010 Nexenta Systems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#include "lint.h"
+#include "mse_int.h"
+#include "file64.h"
+#include "mtlib.h"
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <wchar.h>
+#include "mblocal.h"
+#include "stdiom.h"
+
+/*
+ * Non-MT-safe version.
+ */
+wint_t
+_fgetwc_unlocked(FILE *fp)
+{
+	wchar_t wc;
+	size_t nconv;
+	int	c;
+	mbstate_t	*statep;
+
+	if ((c = GETC(fp)) == EOF)
+		return (WEOF);
+
+	if (MB_CUR_MAX == 1) {
+		/* Fast path for single-byte encodings. */
+		return ((wint_t)c);
+	}
+	if ((statep = _getmbstate(fp)) == NULL) {
+		fp->_flag = _IOERR;
+		errno = EBADF;
+		return (WEOF);
+	}
+	do {
+		char	x = (char)c;
+		nconv = __mbrtowc(&wc, &x, 1, statep);
+		if (nconv == (size_t)-1) {
+			break;
+		} else if (nconv == (size_t)-2) {
+			/* Incompletely decoded, consume another char */
+			continue;
+		} else if (nconv == 0) {
+			/*
+			 * Assume that the only valid representation of
+			 * the null wide character is a single null byte.
+			 */
+			return (L'\0');
+		} else {
+			return (wc);
+		}
+	} while ((c = GETC(fp)) != EOF);
+
+	/*
+	 * If we got here it means we got truncated in a character, or
+	 * the character did not decode properly.  Note that in the case
+	 * of a botched decoding, we don't UNGETC the bad bytes.  Should
+	 * we?
+	 */
+	fp->_flag |= _IOERR;
+	errno = EILSEQ;
+	return (WEOF);
+}
+
+
+/*
+ * MT safe version
+ */
+wint_t
+fgetwc(FILE *fp)
+{
+	wint_t		r;
+	rmutex_t	*l;
+
+	FLOCKFILE(l, fp);
+	r = _fgetwc_unlocked(fp);
+	FUNLOCKFILE(l);
+
+	return (r);
+}
+
+#undef	getwc
+wint_t
+getwc(FILE *fp)
+{
+	return (getwc(fp));
+}
+
+/*
+ * XPG5 version.
+ */
+wint_t
+__fgetwc_xpg5(FILE *fp)
+{
+	wint_t		r;
+	rmutex_t	*l;
+
+	FLOCKFILE(l, fp);
+	if (GET_NO_MODE(fp))
+		_setorientation(fp, _WC_MODE);
+	r = _fgetwc_unlocked(fp);
+	FUNLOCKFILE(l);
+
+	return (r);
+}
+
+#undef	__getwc_xpg5
+wint_t
+__getwc_xpg5(FILE *fp)
+{
+	return (__fgetwc_xpg5(fp));
+}