[PATCH] Add rpmatch(3)

[Yaakov Selkowitz <yselkowi at redhat dot com>]

2015-11-17  Yaakov Selkowitz  <yselkowi@redhat.com>

* libc/include/stdlib.h (rpmatch): Declare.
* libc/stdlib/Makefile.am (ELIX_4_SOURCES): Add rpmatch.c.
(CHEWOUT_FILES): Add rpmatch.def.
* libc/stdlib/Makefile.in: Regenerate.
* libc/stdlib/rpmatch.c: New file.
* libc/stdlib/stdlib.tex: Add references to rpmatch.
---
 newlib/ChangeLog               |  9 +++++
 newlib/libc/include/stdlib.h   |  1 +
 newlib/libc/stdlib/Makefile.am |  2 +
 newlib/libc/stdlib/Makefile.in | 12 +++++-
 newlib/libc/stdlib/rpmatch.c   | 87 ++++++++++++++++++++++++++++++++++++++++++
 newlib/libc/stdlib/stdlib.tex  |  4 ++
 6 files changed, 113 insertions(+), 2 deletions(-)
 create mode 100644 newlib/libc/stdlib/rpmatch.c

diff --git a/newlib/ChangeLog b/newlib/ChangeLog
index f2a30a1..4045b7c 100644
--- a/newlib/ChangeLog
+++ b/newlib/ChangeLog
@@ -1,3 +1,12 @@
+2015-11-17  Yaakov Selkowitz  <yselkowi@redhat.com>
+
+	* libc/include/stdlib.h (rpmatch): Declare.
+	* libc/stdlib/Makefile.am (ELIX_4_SOURCES): Add rpmatch.c.
+	(CHEWOUT_FILES): Add rpmatch.def.
+	* libc/stdlib/Makefile.in: Regenerate.
+	* libc/stdlib/rpmatch.c: New file.
+	* libc/stdlib/stdlib.tex: Add references to rpmatch.
+
 2015-11-13  Marcus Shawcroft  <marcus.shawcroft@arm.com>
 
 	* libc/machine/arm/strlen-stub.c: Move T1 -O2 implementation to...
diff --git a/newlib/libc/include/stdlib.h b/newlib/libc/include/stdlib.h
index c73ed11..afdde3f 100644
--- a/newlib/libc/include/stdlib.h
+++ b/newlib/libc/include/stdlib.h
@@ -127,6 +127,7 @@ _PTR	_EXFUN_NOTHROW(realloc,(_PTR __r, size_t __size));
 #ifndef __STRICT_ANSI__
 _PTR	_EXFUN(reallocf,(_PTR __r, size_t __size));
 char *	_EXFUN(realpath, (const char *__restrict path, char *__restrict resolved_path));
+int	_EXFUN(rpmatch, (const char *response));
 #endif
 _VOID	_EXFUN(srand,(unsigned __seed));
 double	_EXFUN(strtod,(const char *__restrict __n, char **__restrict __end_PTR));
diff --git a/newlib/libc/stdlib/Makefile.am b/newlib/libc/stdlib/Makefile.am
index f9ba5d5..9db0feb 100644
--- a/newlib/libc/stdlib/Makefile.am
+++ b/newlib/libc/stdlib/Makefile.am
@@ -159,6 +159,7 @@ ELIX_3_SOURCES = \
 	setenv_r.c
 
 ELIX_4_SOURCES = \
+	rpmatch.c	\
 	system.c
 
 if ELIX_LEVEL_1
@@ -276,6 +277,7 @@ CHEWOUT_FILES= \
 	on_exit.def	\
 	rand.def	\
 	rand48.def	\
+	rpmatch.def	\
 	strtod.def 	\
 	strtol.def 	\
 	strtoll.def 	\
diff --git a/newlib/libc/stdlib/Makefile.in b/newlib/libc/stdlib/Makefile.in
index 676c1d6..9db9cea 100644
--- a/newlib/libc/stdlib/Makefile.in
+++ b/newlib/libc/stdlib/Makefile.in
@@ -136,7 +136,7 @@ am__objects_4 = lib_a-a64l.$(OBJEXT) lib_a-btowc.$(OBJEXT) \
 	lib_a-wctob.$(OBJEXT)
 am__objects_5 = lib_a-putenv.$(OBJEXT) lib_a-putenv_r.$(OBJEXT) \
 	lib_a-setenv.$(OBJEXT) lib_a-setenv_r.$(OBJEXT)
-am__objects_6 = lib_a-system.$(OBJEXT)
+am__objects_6 = lib_a-rpmatch.$(OBJEXT) lib_a-system.$(OBJEXT)
 @ELIX_LEVEL_1_FALSE@@ELIX_LEVEL_2_FALSE@@ELIX_LEVEL_3_FALSE@am__objects_7 = $(am__objects_4) \
 @ELIX_LEVEL_1_FALSE@@ELIX_LEVEL_2_FALSE@@ELIX_LEVEL_3_FALSE@	$(am__objects_5) \
 @ELIX_LEVEL_1_FALSE@@ELIX_LEVEL_2_FALSE@@ELIX_LEVEL_3_FALSE@	$(am__objects_6)
@@ -171,7 +171,7 @@ am__objects_11 = a64l.lo btowc.lo getopt.lo getsubopt.lo l64a.lo \
 	mbsrtowcs.lo on_exit.lo valloc.lo wcrtomb.lo wcsnrtombs.lo \
 	wcsrtombs.lo wctob.lo
 am__objects_12 = putenv.lo putenv_r.lo setenv.lo setenv_r.lo
-am__objects_13 = system.lo
+am__objects_13 = rpmatch.lo system.lo
 @ELIX_LEVEL_1_FALSE@@ELIX_LEVEL_2_FALSE@@ELIX_LEVEL_3_FALSE@am__objects_14 = $(am__objects_11) \
 @ELIX_LEVEL_1_FALSE@@ELIX_LEVEL_2_FALSE@@ELIX_LEVEL_3_FALSE@	$(am__objects_12) \
 @ELIX_LEVEL_1_FALSE@@ELIX_LEVEL_2_FALSE@@ELIX_LEVEL_3_FALSE@	$(am__objects_13)
@@ -448,6 +448,7 @@ ELIX_3_SOURCES = \
 	setenv_r.c
 
 ELIX_4_SOURCES = \
+	rpmatch.c	\
 	system.c
 
 @ELIX_LEVEL_1_FALSE@@ELIX_LEVEL_2_FALSE@@ELIX_LEVEL_3_FALSE@ELIX_SOURCES = $(ELIX_2_SOURCES) $(ELIX_3_SOURCES) $(ELIX_4_SOURCES)
@@ -519,6 +520,7 @@ CHEWOUT_FILES = \
 	on_exit.def	\
 	rand.def	\
 	rand48.def	\
+	rpmatch.def	\
 	strtod.def 	\
 	strtol.def 	\
 	strtoll.def 	\
@@ -1253,6 +1255,12 @@ lib_a-setenv_r.o: setenv_r.c
 lib_a-setenv_r.obj: setenv_r.c
 	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-setenv_r.obj `if test -f 'setenv_r.c'; then $(CYGPATH_W) 'setenv_r.c'; else $(CYGPATH_W) '$(srcdir)/setenv_r.c'; fi`
 
+lib_a-rpmatch.o: rpmatch.c
+	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-rpmatch.o `test -f 'rpmatch.c' || echo '$(srcdir)/'`rpmatch.c
+
+lib_a-rpmatch.obj: rpmatch.c
+	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-rpmatch.obj `if test -f 'rpmatch.c'; then $(CYGPATH_W) 'rpmatch.c'; else $(CYGPATH_W) '$(srcdir)/rpmatch.c'; fi`
+
 lib_a-system.o: system.c
 	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-system.o `test -f 'system.c' || echo '$(srcdir)/'`system.c
 
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);
+}
diff --git a/newlib/libc/stdlib/stdlib.tex b/newlib/libc/stdlib/stdlib.tex
index fdd495e..ef09867 100644
--- a/newlib/libc/stdlib/stdlib.tex
+++ b/newlib/libc/stdlib/stdlib.tex
@@ -39,6 +39,7 @@ The corresponding declarations are in the header file @file{stdlib.h}.
 * qsort::	Array sort
 * rand::        Pseudo-random numbers
 * rand48::      Uniformly distributed pseudo-random numbers
+* rpmatch::     Determine whether response is affirmative or negative
 * strtod::      String to double or float
 * strtol::      String to long
 * strtoll::     String to long long
@@ -156,6 +157,9 @@ The corresponding declarations are in the header file @file{stdlib.h}.
 @include stdlib/rand48.def
 
 @page
+@include stdlib/rmpatch.def
+
+@page
 @include stdlib/strtod.def
 
 @page
-- 
2.5.3