From 3351a238344995f7c1b5869e23d4633ec8bbb0cb Mon Sep 17 00:00:00 2001
From: rgrimes <rgrimes@FreeBSD.org>
Date: Fri, 27 May 1994 10:26:59 +0000
Subject: This is James da Silva at the University of Maryland at College
 Park's regex.c code as picked up from the net.

---
 lib/libcompat/4.3/regex.c | 92 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 lib/libcompat/4.3/regex.c

(limited to 'lib/libcompat')

diff --git a/lib/libcompat/4.3/regex.c b/lib/libcompat/4.3/regex.c
new file mode 100644
index 0000000..f89c32c
--- /dev/null
+++ b/lib/libcompat/4.3/regex.c
@@ -0,0 +1,92 @@
+/*-
+ * Copyright (c) 1992 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * James da Silva at the University of Maryland at College Park.
+ *
+ * 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. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
+ */
+
+/*
+ * Compatibility routines that implement the old re_comp/re_exec interface in
+ * terms of the regcomp/regexec interface.  It's possible that some programs
+ * rely on dark corners of re_comp/re_exec and won't work with this version,
+ * but most programs should be fine.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)regex.c	5.1 (Berkeley) 3/29/92";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <stddef.h>
+#include <regexp.h>
+#include <string.h>
+#include <stdlib.h>
+
+static regexp *re_regexp;
+static int re_goterr;
+static char *re_errstr;
+
+char *
+re_comp(s)
+	char *s;
+{
+	if (s == NULL)
+		return (NULL);
+	if (re_regexp)
+		free(re_regexp);
+	if (re_errstr)
+		free(re_errstr);
+	re_goterr = 0;
+	re_regexp = regcomp(s);
+	return (re_goterr ? re_errstr : NULL);
+}
+
+int
+re_exec(s)
+	char *s;
+{
+	int rc;
+
+	re_goterr = 0;
+	rc = regexec(re_regexp, s);
+	return (re_goterr ? -1 : rc);
+}
+
+void
+regerror(s)
+	const char *s;
+{
+	re_goterr = 1;
+	if (re_errstr)
+		free(re_errstr);
+	re_errstr = strdup(s);
+}
-- 
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