encoding: RouteOrigin stream extraction operator
refs #3987
Change-Id: I073984d6e2f158ff200a8bb8478896028993897f
diff --git a/src/encoding/nfd-constants.cpp b/src/encoding/nfd-constants.cpp
index 9cda265..0de5fe2 100644
--- a/src/encoding/nfd-constants.cpp
+++ b/src/encoding/nfd-constants.cpp
@@ -22,6 +22,9 @@
#include "nfd-constants.hpp"
#include "util/string-helper.hpp"
+#include <boost/algorithm/string.hpp>
+#include <boost/lexical_cast.hpp>
+#include <istream>
#include <map>
#include <ostream>
@@ -92,6 +95,53 @@
return os << static_cast<unsigned>(faceEventKind);
}
+std::istream&
+operator>>(std::istream& is, RouteOrigin& routeOrigin)
+{
+ using boost::algorithm::iequals;
+
+ std::string s;
+ is >> s;
+
+ if (iequals(s, "none"))
+ routeOrigin = ROUTE_ORIGIN_NONE;
+ else if (iequals(s, "app"))
+ routeOrigin = ROUTE_ORIGIN_APP;
+ else if (iequals(s, "autoreg"))
+ routeOrigin = ROUTE_ORIGIN_AUTOREG;
+ else if (iequals(s, "client"))
+ routeOrigin = ROUTE_ORIGIN_CLIENT;
+ else if (iequals(s, "autoconf"))
+ routeOrigin = ROUTE_ORIGIN_AUTOCONF;
+ else if (iequals(s, "nlsr"))
+ routeOrigin = ROUTE_ORIGIN_NLSR;
+ else if (iequals(s, "static"))
+ routeOrigin = ROUTE_ORIGIN_STATIC;
+ else {
+ // To reject negative numbers, we parse as a wider signed type, and compare with the range.
+ static_assert(std::numeric_limits<std::underlying_type<RouteOrigin>::type>::max() <=
+ std::numeric_limits<int>::max(), "");
+
+ int v = -1;
+ try {
+ v = boost::lexical_cast<int>(s);
+ }
+ catch (const boost::bad_lexical_cast&) {
+ }
+
+ if (v >= std::numeric_limits<std::underlying_type<RouteOrigin>::type>::min() &&
+ v <= std::numeric_limits<std::underlying_type<RouteOrigin>::type>::max()) {
+ routeOrigin = static_cast<RouteOrigin>(v);
+ }
+ else {
+ routeOrigin = ROUTE_ORIGIN_NONE;
+ is.setstate(std::ios::failbit);
+ }
+ }
+
+ return is;
+}
+
std::ostream&
operator<<(std::ostream& os, RouteOrigin routeOrigin)
{
diff --git a/src/encoding/nfd-constants.hpp b/src/encoding/nfd-constants.hpp
index de19776..1212eb9 100644
--- a/src/encoding/nfd-constants.hpp
+++ b/src/encoding/nfd-constants.hpp
@@ -95,6 +95,14 @@
ROUTE_ORIGIN_STATIC = 255,
};
+/** \brief extract RouteOrigin from stream
+ * \post if the first token in \p contains a valid RouteOrigin as string or numeric value, it is
+ * extracted into \p routeOrigin ; otherwise, \p routeOrigin is set to \p ROUTE_ORIGIN_NONE ,
+ * and failbit is set on \p is
+ */
+std::istream&
+operator>>(std::istream& is, RouteOrigin& routeOrigin);
+
std::ostream&
operator<<(std::ostream& os, RouteOrigin routeOrigin);
diff --git a/tests/unit-tests/encoding/nfd-constants.t.cpp b/tests/unit-tests/encoding/nfd-constants.t.cpp
index e185093..c3fe54a 100644
--- a/tests/unit-tests/encoding/nfd-constants.t.cpp
+++ b/tests/unit-tests/encoding/nfd-constants.t.cpp
@@ -67,6 +67,47 @@
BOOST_CHECK_EQUAL(boost::lexical_cast<std::string>(static_cast<FaceEventKind>(175)), "175");
}
+BOOST_AUTO_TEST_CASE(ParseRouteOrigin)
+{
+ auto expectSuccess = [] (const std::string& input, RouteOrigin expected) {
+ std::istringstream is(input);
+ RouteOrigin routeOrigin;
+ is >> routeOrigin;
+
+ BOOST_TEST_MESSAGE("parsing " << input);
+ BOOST_CHECK_EQUAL(routeOrigin, expected);
+ };
+
+ auto expectFail = [] (const std::string& input) {
+ std::istringstream is(input);
+ RouteOrigin routeOrigin;
+ is >> routeOrigin;
+
+ BOOST_TEST_MESSAGE("parsing " << input);
+ BOOST_CHECK(is.fail());
+ BOOST_CHECK_EQUAL(routeOrigin, ROUTE_ORIGIN_NONE);
+ };
+
+ expectSuccess("none", ROUTE_ORIGIN_NONE);
+ expectSuccess("App", ROUTE_ORIGIN_APP);
+ expectSuccess("AutoReg", ROUTE_ORIGIN_AUTOREG);
+ expectSuccess("Client", ROUTE_ORIGIN_CLIENT);
+ expectSuccess("AutoConf", ROUTE_ORIGIN_AUTOCONF);
+ expectSuccess("NLSR", ROUTE_ORIGIN_NLSR);
+ expectSuccess("static", ROUTE_ORIGIN_STATIC);
+ expectSuccess("27", static_cast<RouteOrigin>(27));
+
+ expectSuccess(" app", ROUTE_ORIGIN_APP);
+ expectSuccess("app ", ROUTE_ORIGIN_APP);
+ expectSuccess(" app ", ROUTE_ORIGIN_APP);
+
+ expectFail("unrecognized");
+ expectFail("-1");
+ expectFail("0.1");
+ expectFail("65537");
+ expectFail("");
+}
+
BOOST_AUTO_TEST_CASE(PrintRouteOrigin)
{
BOOST_CHECK_EQUAL(boost::lexical_cast<std::string>(ROUTE_ORIGIN_NONE), "none");