$NetBSD: patch-ah,v 1.2 2002/07/05 13:14:24 wiz Exp $

--- lib/fgetln.c.orig	Fri Jul  5 15:12:30 2002
+++ lib/fgetln.c
@@ -0,0 +1,70 @@
+/*
+ * Copyright 1999 Luke Mewburn <lukem@netbsd.org>.
+ * 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.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
+ */
+
+#include "lib.h"
+#include <err.h>
+
+#define BUFCHUNKS	BUFSIZ
+
+char *
+fgetln(FILE *fp, size_t *len)
+{
+	static char *buf;
+	static size_t bufsize;
+	size_t buflen;
+	char curbuf[BUFCHUNKS];
+	char *p;
+
+	if (buf == NULL) {
+		bufsize = BUFCHUNKS;
+		buf = (char *)malloc(bufsize);
+		if (buf == NULL)
+			err(1, "Unable to allocate buffer for fgetln()");
+	}
+
+	*buf = '\0';
+	buflen = 0;
+	while ((p = fgets(curbuf, sizeof(curbuf), fp)) != NULL) {
+		size_t l;
+
+		l = strlen(p);
+		if (bufsize < buflen + l) {
+			bufsize += BUFCHUNKS;
+			if ((buf = (char *)realloc(buf, bufsize)) == NULL)
+				err(1, "Unable to allocate %ld bytes of memory",
+				    (long)bufsize);
+		}
+		strcpy(buf + buflen, p);
+		buflen += l;
+		if (p[l - 1] == '\n')
+			break;
+	}
+	if (p == NULL && *buf == '\0')
+		return (NULL);
+	*len = strlen(buf);
+	return (buf);
+}