1 files changed, 82 insertions, 0 deletions
diff --git a/usr/src/lib/libbc/libc/stdio/common/fgets.c b/usr/src/lib/libbc/libc/stdio/common/fgets.c
new file mode 100644
index 0000000000..d6cfb55466
--- /dev/null
+++ b/usr/src/lib/libbc/libc/stdio/common/fgets.c
@@ -0,0 +1,82 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 1989 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+/*      Copyright (c) 1984 AT&T */
+/*        All Rights Reserved   */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"  /* from S5R2 3.3 */
+
+/*LINTLIBRARY*/
+/*
+ * This version reads directly from the buffer rather than looping on getc.
+ * Ptr args aren't checked for NULL because the program would be a
+ * catastrophic mess anyway.  Better to abort than just to return NULL.
+ */
+#include <stdio.h>
+#include "stdiom.h"
+
+#define MIN(x, y)	(x < y ? x : y)
+
+extern int _filbuf();
+extern char *memccpy();
+
+char *
+fgets(ptr, size, iop)
+char *ptr;
+register int size;
+register FILE *iop;
+{
+	char *p, *ptr0 = ptr;
+	register int n;
+
+	if ( !(iop->_flag & (_IOREAD|_IORW)) ) {
+		iop->_flag |= _IOERR;
+		return (NULL);
+	}
+
+	for (size--; size > 0; size -= n) {
+		if (iop->_cnt <= 0) { /* empty buffer */
+			if (_filbuf(iop) == EOF) {
+				if (ptr0 == ptr)
+					return (NULL);
+				break; /* no more data */
+			}
+			iop->_ptr--;
+			iop->_cnt++;
+		}
+		n = MIN(size, iop->_cnt);
+		if ((p = memccpy(ptr, (char *) iop->_ptr, '\n', n)) != NULL)
+			n = p - ptr;
+		ptr += n;
+		iop->_cnt -= n;
+		iop->_ptr += n;
+		_BUFSYNC(iop);
+		if (p != NULL)
+			break; /* found '\n' in buffer */
+	}
+	*ptr = '\0';
+	return (ptr0);
+}