1 files changed, 87 insertions, 0 deletions
diff --git a/newlib/libc/stdlib/rpmatch.c b/newlib/libc/stdlib/rpmatch.c
new file mode 100644
index 0000000..879d1f3
--- /dev/null
+++ b/newlib/libc/stdlib/rpmatch.c
@@ -0,0 +1,87 @@
+/*
+FUNCTION
+<<rpmatch>>---determine whether response to question is affirmative or negative
+
+INDEX
+	rpmatch
+
+ANSI_SYNOPSIS
+	#include <stdlib.h>
+	int rpmatch(const char *<[response]>);
+
+TRAD_SYNOPSIS
+	#include <stdlib.h>
+	int rpmatch(<[response]>)
+	const char *<[response]>;
+
+DESCRIPTION
+The <<rpmatch>> function determines whether <[response]> is an affirmative
+or negative response to a question according to the current locale.
+
+RETURNS
+<<rpmatch>> returns 1 if <[response]> is affirmative, 0 if negative, or -1
+if not recognized as either.
+
+PORTABILITY
+<<rpmatch>> is a BSD extension also found in glibc.
+
+NOTES
+No supporting OS subroutines are required.
+*/
+
+/* This code is originally taken from FreeBSD. */
+/*-
+ * Copyright (c) 2004-2005 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.
+ */
+
+#include <sys/cdefs.h>
+
+#include <langinfo.h>
+#include <regex.h>
+#include <stdlib.h>
+
+int
+_DEFUN(rpmatch, (response),
+       const char *response)
+{
+	regex_t yes, no;
+	int ret;
+
+	if (regcomp(&yes, nl_langinfo(YESEXPR), REG_EXTENDED|REG_NOSUB) != 0)
+		return (-1);
+	if (regcomp(&no, nl_langinfo(NOEXPR), REG_EXTENDED|REG_NOSUB) != 0) {
+		regfree(&yes);
+		return (-1);
+	}
+	if (regexec(&yes, response, 0, NULL, 0) == 0)
+		ret = 1;
+	else if (regexec(&no, response, 0, NULL, 0) == 0)
+		ret = 0;
+	else
+		ret = -1;
+	regfree(&yes);
+	regfree(&no);
+	return (ret);
+}