initial commit, passes a simple test for an initial verson of .match()

.dir-locals.el

+((nil . ((indent-tabs-mode . t)))
+ (c-mode . ((c-file-style . "BSD"))))

.gitignore

+Makefile
+Makefile.in
+.deps/
+.libs/
+*.o
+*.lo
+*.la
+*~
+*.[1-9]
+.dirstamp
+
+/aclocal.m4
+/autom4te.cache/
+/compile
+/config.guess
+/config.h
+/config.h.in
+/config.log
+/config.status
+/config.sub
+/configure
+/depcomp
+/install-sh
+/libtool
+/ltmain.sh
+/missing
+/stamp-h1
+/m4/
+
+/src/vcc_if.c
+/src/vcc_if.h
+/src/vmod_*rst

COPYING

+See LICENSE for details.
+

LICENSE

+Copyright (c) 2016 UPLEX Nils Goroll Systemoptimierung
+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 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.

Makefile.am

+ACLOCAL_AMFLAGS = -I m4 -I ${LIBVARNISHAPI_DATAROOTDIR}/aclocal
+
+SUBDIRS = src
+
+DISTCHECK_CONFIGURE_FLAGS = \
+	VMOD_DIR='$${libdir}/varnish/vmods'
+
+EXTRA_DIST = README.rst LICENSE COPYING
+
+doc_DATA = README.rst LICENSE COPYING
+
+dist_man_MANS = vmod_re2.3
+MAINTAINERCLEANFILES = $(dist_man_MANS)
+
+vmod_re2.3: README.rst
+
+README.rst: src/vmod_re2.man.rst
+	cp src/vmod_re2.man.rst README.rst
+
+src/vmod_re2.man.rst:
+	make -C src vmod_re2.man.rst
+
+%.1 %.2 %.3 %.4 %.5 %.6 %.7 %.8 %.9:
+if HAVE_RST2MAN
+	${RST2MAN} $< $@
+else
+	@echo "========================================"
+	@echo "You need rst2man installed to make dist"
+	@echo "========================================"
+	@false
+endif

README.rst

+..
+.. NB:  This file is machine generated, DO NOT EDIT!
+..
+.. Edit vmod.vcc and run make instead
+..
+
+.. role:: ref(emphasis)
+
+.. _vmod_re2(3):
+
+========
+vmod_re2
+========
+
+-----------------------------------------------
+access the Google RE2 regular expression engine
+-----------------------------------------------
+
+:Manual section: 3
+
+SYNOPSIS
+========
+
+import re2 [from "path"] ;
+
+
+CONTENTS
+========
+
+* Object regex
+* BOOL regex.match(STRING)
+* STRING version()
+
+.. _obj_regex:
+
+Object regex
+============
+
+
+.. _func_regex.match:
+
+BOOL regex.match(STRING)
+------------------------
+
+Prototype
+	BOOL regex.match(STRING)
+
+.. _func_version:
+
+STRING version()
+----------------
+
+Prototype
+	STRING version()

autogen.sh

+#!/bin/sh
+
+warn() {
+	echo "WARNING: $@" 1>&2
+}
+
+case `uname -s` in
+Darwin)
+	LIBTOOLIZE=glibtoolize
+	;;
+FreeBSD)
+	LIBTOOLIZE=libtoolize
+	;;
+Linux)
+	LIBTOOLIZE=libtoolize
+	;;
+SunOS)
+	LIBTOOLIZE=libtoolize
+	;;
+*)
+	warn "unrecognized platform:" `uname -s`
+	LIBTOOLIZE=libtoolize
+esac
+
+automake_version=`automake --version | tr ' ' '\n' | egrep '^[0-9]\.[0-9a-z.-]+'`
+if [ -z "$automake_version" ] ; then
+	warn "unable to determine automake version"
+else
+	case $automake_version in
+		0.*|1.[0-8]|1.[0-8][.-]*)
+			warn "automake ($automake_version) detected; 1.9 or newer recommended"
+			;;
+		*)
+			;;
+	esac
+fi
+
+# check for varnishapi.m4 in custom paths
+dataroot=$(pkg-config --variable=datarootdir varnishapi 2>/dev/null)
+if [ -z "$dataroot" ] ; then
+	cat >&2 <<'EOF'
+Package varnishapi was not found in the pkg-config search path.
+Perhaps you should add the directory containing `varnishapi.pc'
+to the PKG_CONFIG_PATH environment variable
+EOF
+	exit 1
+fi
+set -ex
+aclocal -I m4 -I ${dataroot}/aclocal
+$LIBTOOLIZE --copy --force
+autoheader
+automake --add-missing --copy --foreign
+autoconf

configure.ac

+AC_PREREQ(2.59)
+AC_COPYRIGHT([Copyright (c) 2016 UPLEX - Nils Goroll Systemoptimierung])
+AC_INIT([libvmod-re2], [trunk])
+AC_CONFIG_MACRO_DIR([m4])
+m4_ifndef([VARNISH_VMOD_INCLUDES], AC_MSG_ERROR([Need varnish.m4 -- see README.rst]))
+AC_CONFIG_SRCDIR(src/vmod_re2.vcc)
+AM_CONFIG_HEADER(config.h)
+
+AC_CANONICAL_SYSTEM
+AC_LANG(C)
+
+AM_INIT_AUTOMAKE([foreign])
+
+AC_GNU_SOURCE
+AC_PROG_CC
+AC_PROG_CXX
+AC_PROG_CC_STDC
+if test "x$ac_cv_prog_cc_c99" = xno; then
+	AC_MSG_ERROR([Could not find a C99 compatible compiler])
+fi
+AC_PROG_CPP
+AC_PROG_CXXCPP
+
+AX_PTHREAD(,[AC_MSG_ERROR([Could not configure pthreads support])])
+
+LIBS="$PTHREAD_LIBS $LIBS"
+CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+CXXFLAGS="$CXXFLAGS $PTHREAD_CFLAGS"
+CC="$PTHREAD_CC"
+
+AC_PROG_INSTALL
+AC_PROG_LIBTOOL
+AC_PROG_MAKE_SET
+
+# Check for rst utilities
+AC_CHECK_PROGS(RST2MAN, [rst2man rst2man.py], "no")
+if test "x$RST2MAN" = "xno"; then
+	AC_MSG_WARN([rst2man not found - not building man pages])
+fi
+AM_CONDITIONAL(HAVE_RST2MAN, [test "x$RST2MAN" != "xno"])
+
+# Checks for header files.
+AC_HEADER_STDC
+#AC_CHECK_HEADERS([sys/types.h])
+#AC_CHECK_HEADERS([stdint.h])
+#AC_CHECK_HEADERS([unistd.h])
+
+# backwards compat with older pkg-config
+# - pull in AC_DEFUN from pkg.m4
+m4_ifndef([PKG_CHECK_VAR], [
+# PKG_CHECK_VAR(VARIABLE, MODULE, CONFIG-VARIABLE,
+# [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
+# -------------------------------------------
+# Retrieves the value of the pkg-config variable for the given module.
+AC_DEFUN([PKG_CHECK_VAR],
+[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
+AC_ARG_VAR([$1], [value of $3 for $2, overriding pkg-config])dnl
+
+_PKG_CONFIG([$1], [variable="][$3]["], [$2])
+AS_VAR_COPY([$1], [pkg_cv_][$1])
+
+AS_VAR_IF([$1], [""], [$5], [$4])dnl
+])# PKG_CHECK_VAR
+])
+
+PKG_CHECK_MODULES([libvarnishapi], [varnishapi])
+PKG_CHECK_VAR([LIBVARNISHAPI_DATAROOTDIR], [varnishapi], [datarootdir])
+PKG_CHECK_VAR([LIBVARNISHAPI_BINDIR], [varnishapi], [bindir])
+PKG_CHECK_VAR([LIBVARNISHAPI_SBINDIR], [varnishapi], [sbindir])
+AC_SUBST([LIBVARNISHAPI_DATAROOTDIR])
+
+# Varnish include files tree
+VARNISH_VMOD_INCLUDES
+VARNISH_VMOD_DIR
+VARNISH_VMODTOOL
+
+AC_PATH_PROG([VARNISHTEST], [varnishtest], [],
+    [$LIBVARNISHAPI_BINDIR:$LIBVARNISHAPI_SBINDIR:$PATH])
+AC_PATH_PROG([VARNISHD], [varnishd], [],
+    [$LIBVARNISHAPI_SBINDIR:$LIBVARNISHAPI_BINDIR:$PATH])
+
+PKG_CHECK_MODULES([RE2], [re2])
+
+# --enable-stack-protector
+AC_ARG_ENABLE(stack-protector,
+       AS_HELP_STRING([--enable-stack-protector],[enable stack protector (default is YES)]),
+       [],
+       [enable_stack_protector=yes])
+
+if test "x$enable_stack_protector" != "xno"; then
+	AX_CHECK_COMPILE_FLAG([-fstack-protector],
+		AX_CHECK_LINK_FLAG([-fstack-protector],
+			[CFLAGS="${CFLAGS} -fstack-protector"], [], []),
+		[], [])
+fi
+
+# --enable-debugging
+AC_ARG_ENABLE(debugging,
+	AS_HELP_STRING([--enable-debugging],[enable debugging (default is NO)]),
+	[],
+	[enable_debugging=no])
+
+# AC_PROG_CC sets CFLAGS to '-g -O2' unless it is already set, so
+# there's no need to add -g. Disable or change by explicitly setting
+# CFLAGS. If this option is enabled, then -Og or -O0 becomes the last
+# optimization option, and hence takes precedence.
+if test "x$enable_debugging" != "xno"; then
+	CFLAGS="${CFLAGS} -fno-inline"
+	AX_CHECK_COMPILE_FLAG([-Og],
+		[CFLAGS="${CFLAGS} -Og"],
+		[CFLAGS="${CFLAGS} -O0"],
+		[])
+fi
+
+AC_CONFIG_FILES([
+	Makefile
+	src/Makefile
+])
+AC_OUTPUT

src/Makefile.am

+AUTOMAKE_OPTIONS = subdir-objects
+
+AM_CPPFLAGS = @VMOD_INCLUDES@ -Wall -Werror
+CFLAGS += -std=c99
+AM_CXXFLAGS = -Wall -Werror -std=c++11 @RE2_CFLAGS@
+
+vmoddir = @VMOD_DIR@
+vmod_LTLIBRARIES = libvmod_re2.la
+
+libvmod_re2_la_LDFLAGS = -module -export-dynamic -avoid-version -shared
+
+libvmod_re2_la_SOURCES = \
+	vmod_re2.c \
+	vre2/vre2.h \
+	vre2/vre2.cpp
+
+nodist_libvmod_re2_la_SOURCES = \
+	vcc_if.c \
+	vcc_if.h
+
+libvmod_re2_la_LIBADD = \
+        ${PTHREAD_LIBS} \
+        @RE2_LIBS@
+
+vmod_re2.lo: vcc_if.c vcc_if.h
+
+vcc_if.c: vcc_if.h
+
+vre2/vre2.cpp: vre2/vre2.h
+
+vcc_if.h vmod_re2.man.rst: @VMODTOOL@ $(top_srcdir)/src/vmod_re2.vcc
+	@VMODTOOL@ $(top_srcdir)/src/vmod_re2.vcc
+
+VMOD_TESTS = $(top_srcdir)/src/tests/*.vtc
+.PHONY: $(VMOD_TESTS)
+
+$(top_srcdir)/src/tests/*.vtc: libvmod_re2.la
+	@VARNISHTEST@ -Dvarnishd=@VARNISHD@ -Dvmod_topbuild=$(abs_top_builddir) $@
+
+check: $(VMOD_TESTS)
+
+EXTRA_DIST = \
+	vmod_re2.vcc \
+	$(VMOD_TESTS)
+
+CLEANFILES = \
+	$(builddir)/vcc_if.c \
+	$(builddir)/vcc_if.h \
+	$(builddir)/vmod_re2.rst \
+	$(builddir)/vmod_re2.man.rst

src/tests/00basic.vtc

+# looks like -*- vcl -*-
+
+varnishtest "vcl.use and .discard, and version string"
+
+server s1 {} -start
+
+varnish v1 -vcl+backend {
+	import re2 from "${vmod_topbuild}/src/.libs/libvmod_re2.so";
+} -start
+
+varnish v1 -vcl+backend {}
+
+varnish v1 -cli "vcl.list"
+varnish v1 -cli "vcl.use vcl1"
+
+varnish v1 -cli "vcl.use vcl2"
+varnish v1 -cli "vcl.use vcl1"
+
+varnish v1 -cli "vcl.show vcl1"
+varnish v1 -cli "vcl.use vcl2"
+varnish v1 -cli "vcl.discard vcl1"
+varnish v1 -cli "vcl.list"
+
+varnish v1 -vcl {
+	import re2 from "${vmod_topbuild}/src/.libs/libvmod_re2.so";
+	backend b { .host = "${bad_ip}"; }
+
+	sub vcl_recv {
+		return(synth(200));
+	}
+
+	sub vcl_synth {
+		set resp.http.x-version = re2.version();
+		if (!resp.http.x-version) {
+			set resp.status = 500;
+		}
+		return(deliver);
+	}
+}
+
+client c1 {
+	txreq -url "/"
+	rxresp
+	expect resp.status == 200
+	expect resp.http.x-version ~ "^.+$"
+} -run

src/tests/b01.vtc

+# looks like -*- vcl -*-
+
+varnishtest "regexp match and no-match (cf. varnish b00028.vtc & v00016.vtc)"
+
+server s1 {
+	rxreq
+	txresp -hdr "Foo: bar" -hdr "Bar: foo" -body "1111\n"
+} -start
+
+varnish v1 -vcl+backend {
+	import re2 from "${vmod_topbuild}/src/.libs/libvmod_re2.so";
+
+	sub vcl_init {
+	        new foobar = re2.regex("foobar");
+		new snafu = re2.regex("snafu");
+		new bar = re2.regex("bar");
+	}
+
+        sub vcl_recv {
+                if (foobar.match(req.url)) {
+                        return(pass);
+                } else if (snafu.match(req.url)) {
+                        return(pipe);
+                } else {
+                        return(pass);
+                }
+        }
+
+	sub vcl_backend_response {
+		if (bar.match(beresp.http.foo)) {
+			set beresp.http.foo1 = "1";
+		} else {
+			set beresp.status = 999;
+		}
+
+		if (!bar.match(beresp.http.bar)) {
+			set beresp.http.bar1 = "2";
+		} else {
+			set beresp.status = 999;
+		}
+	}
+
+} -start
+
+client c1 {
+	txreq
+	rxresp
+	expect resp.status == "200"
+	expect resp.http.foo1 == "1"
+	expect resp.http.bar1 == "2"
+} -run

src/vmod_re2.c

+/*-
+ * Copyright (c) 2016 UPLEX Nils Goroll Systemoptimierung
+ * All rights reserved
+ *
+ * Author: Geoffrey Simmons <geoffrey.simmons@uplex.de>
+ *
+ * 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 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 "config.h"
+
+#include <pthread.h>
+#include <stdlib.h>
+
+#include "vcl.h"
+#include "vrt.h"
+#include "vas.h"
+#include "vdef.h"
+#include "cache/cache.h"
+#include "vsb.h"
+#include "miniobj.h"
+
+#include "vcc_if.h"
+#include "vre2/vre2.h"
+
+#define ERR(ctx, msg) \
+        errmsg((ctx), "vmod re2 error: " msg)
+
+#define VERR(ctx, fmt, ...) \
+        errmsg((ctx), "vmod re2 error: " fmt, __VA_ARGS__)
+
+struct vmod_re2_regex {
+	unsigned	magic;
+#define VMOD_RE2_REGEX_MAGIC 0x5c3f6f24
+	pthread_key_t	ovk;
+	vre2		*vre2;
+};
+
+#if 0
+typedef struct ov_s {
+	unsigned	magic;
+#define OV_MAGIC 0x844bfa39
+	const char	*subject;
+	int		ovector[MAX_OV_USED];
+} ov_t;
+#endif
+
+#if 0
+static char c;
+static const void *match_failed = (void *) &c;
+#endif
+
+static void
+errmsg(VRT_CTX, const char *fmt, ...)
+{
+        va_list args;
+
+        va_start(args, fmt);
+        if (ctx->method == VCL_MET_INIT) {
+                AN(ctx->msg);
+                VSB_vprintf(ctx->msg, fmt, args);
+                VRT_handling(ctx, VCL_RET_FAIL);
+        }
+        else if (ctx->vsl)
+                VSLbv(ctx->vsl, SLT_VCL_Error, fmt, args);
+        else
+                /* Should this ever happen in vcl_fini() ... */
+                VSL(SLT_VCL_Error, 0, fmt, args);
+        va_end(args);
+}
+
+VCL_VOID
+vmod_regex__init(const struct vrt_ctx *ctx, struct vmod_re2_regex **rep,
+		 const char *vcl_name, VCL_STRING pattern)
+{
+	struct vmod_re2_regex *re;
+	const char *err;
+
+	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
+	AN(rep);
+	AZ(*rep);
+	AN(vcl_name);
+	AN(pattern);
+	ALLOC_OBJ(re, VMOD_RE2_REGEX_MAGIC);
+	AN(re);
+	*rep = re;
+
+	AZ(pthread_key_create(&re->ovk, NULL));
+	err = vre2_init(&re->vre2, pattern);
+	if (err != NULL) {
+		vre2_fini(&re->vre2);
+		re->vre2 = NULL;
+		FREE_OBJ(re);
+		*rep = NULL;
+		VERR(ctx, "Cannot compile '%s' in regex object %s: %s", pattern,
+		     vcl_name, err);
+	}
+}
+
+VCL_VOID
+vmod_regex__fini(struct vmod_re2_regex **rep)
+{
+	struct vmod_re2_regex *re;
+
+	re = *rep;
+	*rep = NULL;
+	AZ(pthread_key_delete(re->ovk));
+	CHECK_OBJ_NOTNULL(re, VMOD_RE2_REGEX_MAGIC);
+	vre2_fini(&re->vre2);
+	FREE_OBJ(re);
+}
+
+VCL_BOOL
+vmod_regex_match(const struct vrt_ctx *ctx, struct vmod_re2_regex *re,
+		 VCL_STRING subject)
+{
+	int match = 0;
+	const char *err;
+
+	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
+	CHECK_OBJ_NOTNULL(re, VMOD_RE2_REGEX_MAGIC);
+	if ((err = vre2_match(re->vre2, subject, &match)) != NULL) {
+		VERR(ctx, ".match(): %s", err);
+		return 0;
+	}
+	return match;
+}
+
+VCL_STRING
+vmod_version(const struct vrt_ctx *ctx __attribute__((unused)))
+{
+	return VERSION;
+}

src/vmod_re2.vcc

+#-
+# Copyright (c) 2016 UPLEX Nils Goroll Systemoptimierung
+# All rights reserved
+#
+# Author: Geoffrey Simmons <geoffrey.simmons@uplex.de>
+#
+# See LICENSE
+#
+
+$Module re2 3 access the Google RE2 regular expression engine
+
+$Object regex(STRING pattern)
+
+$Method BOOL .match(STRING)
+
+$Function STRING version()

src/vre2/vre2.cpp

+/*-
+ * Copyright (c) 2016 UPLEX Nils Goroll Systemoptimierung
+ * All rights reserved
+ *
+ * Author: Geoffrey Simmons <geoffrey.simmons@uplex.de>
+ *
+ * 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 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 "vre2.h"
+
+#define CATCHALL                                \
+        catch (const exception& ex) {           \
+                return ex.what();               \
+        }                                       \
+        catch (...) {                           \
+                return "Unknown error";         \
+        }
+
+using namespace std;
+
+vre2::vre2(const char *pattern) {
+        re_ = new RE2(pattern);
+        if (!re_->ok())
+                throw new runtime_error(re_->error() + " at '"
+                    + re_->error_arg() + "'");
+}
+
+vre2::~vre2() {
+        if (re_) {
+                delete re_;
+                re_ = NULL;
+        }
+}
+
+bool
+vre2::match(const char *subject)
+{
+        return RE2::PartialMatchN(subject, *re_, NULL, 0);
+}
+
+const char *
+vre2_init(vre2 **vre2p, const char *pattern)
+{
+        try {
+                *vre2p = new vre2(pattern);
+                return NULL;
+        }
+        CATCHALL
+}
+
+const char *
+vre2_match(vre2 *vre2, const char *subject, int *match)
+{
+        try {
+                *match = vre2->match(subject);
+                return NULL;
+        }
+        CATCHALL
+}
+
+const char *
+vre2_fini(vre2 **vre2)
+{
+        try {
+                delete *vre2;
+                return NULL;
+        }
+        CATCHALL
+}

src/vre2/vre2.h

+/*-
+ * Copyright (c) 2016 UPLEX Nils Goroll Systemoptimierung
+ * All rights reserved
+ *
+ * Author: Geoffrey Simmons <geoffrey.simmons@uplex.de>
+ *
+ * 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 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.
+ *
+ */
+
+#ifndef _VRE2_H
+#define _VRE2_H
+
+#ifdef __cplusplus
+
+#include <re2/re2.h>
+
+using namespace re2;
+
+class vre2 {
+private:
+    RE2* re_;
+
+public:
+    vre2(const char *pattern);
+    virtual ~vre2();
+    bool match(const char *subject);
+};
+#else
+typedef struct vre2 vre2;
+#endif
+    
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+    const char *vre2_init(vre2 **vre2, const char *pattern);
+    const char *vre2_fini(vre2 **vre2);
+    const char *vre2_match(vre2 *vre2, const char *subject, int *match);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _VRE2_H */