Split tawashi into lib+executable to enable unit testing

src/tawashi_implem/cgi_env.cpp

@@ -0,0 +1,182 @@
+/* Copyright 2017, Michele Santullo
+ * This file is part of "tawashi".
+ *
+ * "tawashi" is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * "tawashi" is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with "tawashi".  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "cgi_env.hpp"
+#include "cgi_environment_vars.hpp"
+#include "duckhandy/lexical_cast.hpp"
+#include <cassert>
+#include <ciso646>
+#include <boost/spirit/include/qi_core.hpp>
+#include <boost/spirit/include/qi_numeric.hpp>
+#include <boost/spirit/include/qi_plus.hpp>
+#include <boost/spirit/include/qi_raw.hpp>
+#include <boost/spirit/include/qi_lit.hpp>
+#include <boost/phoenix/object/construct.hpp>
+#include <boost/phoenix/bind/bind_member_function.hpp>
+#include <boost/phoenix/operator.hpp>
+#include <boost/fusion/adapted/struct.hpp>
+#include <boost/phoenix/stl/container.hpp>
+
+BOOST_FUSION_ADAPT_STRUCT(
+	tawashi::cgi::Env::VersionInfo,
+	(boost::string_ref, name)
+	(uint16_t, major)
+	(uint16_t, minor)
+);
+
+namespace tawashi {
+namespace cgi {
+	namespace {
+		boost::optional<Env::VersionInfo> split_version (const std::string& parString) {
+			namespace px = boost::phoenix;
+
+			using boost::spirit::ascii::space;
+			using boost::spirit::qi::raw;
+			using boost::spirit::qi::char_;
+			using boost::string_ref;
+			using VerNum = boost::spirit::qi::uint_parser<uint16_t, 10, 1, 1>;
+			using RuleType = boost::spirit::qi::rule<std::string::const_iterator, string_ref(), boost::spirit::ascii::space_type>;
+			using boost::spirit::_1;
+			using boost::spirit::qi::_val;
+			using boost::phoenix::begin;
+			using boost::phoenix::size;
+			using boost::phoenix::construct;
+			using boost::make_optional;
+			using boost::optional;
+
+			assert(not parString.empty());
+
+			auto beg = parString.cbegin();
+			RuleType protocol = raw[+(char_ - '/')][_val = px::bind(&string_ref::substr, construct<string_ref>(px::ref(parString)), begin(_1) - px::ref(beg), size(_1))];
+			VerNum ver_num;
+
+			auto it_curr = parString.cbegin();
+			Env::VersionInfo retval;
+			const bool parse_ret = boost::spirit::qi::phrase_parse(
+				it_curr,
+				parString.end(),
+				protocol >> '/' >> ver_num >> '.' >> ver_num,
+				space,
+				retval
+			);
+
+			if (parse_ret and parString.end() == it_curr)
+				return make_optional(retval);
+			else
+				return optional<Env::VersionInfo>();
+		}
+	} //unnamed namespace
+
+	Env::Env() :
+		m_cgi_env(cgi_environment_vars())
+	{
+	}
+
+	Env::~Env() noexcept = default;
+
+	const std::string& Env::auth_type() const {
+		return m_cgi_env[CGIVars::AUTH_TYPE];
+	}
+
+	std::size_t Env::content_length() const {
+		using dhandy::lexical_cast;
+		const std::string& value = m_cgi_env[CGIVars::CONTENT_LENGTH];
+		return (value.empty() ? 0U : lexical_cast<std::size_t>(value));
+	}
+
+	const std::string& Env::content_type() const {
+		return m_cgi_env[CGIVars::CONTENT_TYPE];
+	}
+
+	auto Env::gateway_interface() const -> boost::optional<VersionInfo> {
+		return split_version(m_cgi_env[CGIVars::GATEWAY_INTERFACE]);
+	}
+
+	const std::string& Env::path_info() const {
+		return m_cgi_env[CGIVars::PATH_INFO];
+	}
+
+	const std::string& Env::path_translated() const {
+		return m_cgi_env[CGIVars::PATH_TRANSLATED];
+	}
+
+	const std::string& Env::query_string() const {
+		return m_cgi_env[CGIVars::QUERY_STRING];
+	}
+
+	const std::string& Env::remote_addr() const {
+		return m_cgi_env[CGIVars::REMOTE_ADDR];
+	}
+
+	const std::string& Env::remote_host() const {
+		return m_cgi_env[CGIVars::REMOTE_HOST];
+	}
+
+	const std::string& Env::remote_ident() const {
+		return m_cgi_env[CGIVars::REMOTE_IDENT];
+	}
+
+	const std::string& Env::remote_user() const {
+		return m_cgi_env[CGIVars::REMOTE_USER];
+	}
+
+	const std::string& Env::request_method() const {
+		return m_cgi_env[CGIVars::REQUEST_METHOD];
+	}
+
+	const std::string& Env::script_name() const {
+		return m_cgi_env[CGIVars::SCRIPT_NAME];
+	}
+
+	const std::string& Env::server_name() const {
+		return m_cgi_env[CGIVars::SERVER_NAME];
+	}
+
+	uint16_t Env::server_port() const {
+		using dhandy::lexical_cast;
+		const std::string& value = m_cgi_env[CGIVars::SERVER_PORT];
+		return (value.empty() ? 0U : lexical_cast<uint16_t>(value));
+	}
+
+	auto Env::server_protocol() const -> boost::optional<VersionInfo> {
+		return split_version(m_cgi_env[CGIVars::SERVER_PROTOCOL]);
+	}
+
+	const std::string& Env::server_software() const {
+		return m_cgi_env[CGIVars::SERVER_SOFTWARE];
+	}
+
+	Env::GetMapType Env::query_string_split() const {
+		GetMapType retval;
+		const auto urlencoded_values = split_env_vars(m_cgi_env[CGIVars::QUERY_STRING]);
+		retval.reserve(urlencoded_values.size());
+		for (auto& itm : urlencoded_values) {
+			retval[m_houdini.unescape_url(itm.first)] = m_houdini.unescape_url(itm.second);
+		}
+		return retval;
+	}
+
+	std::ostream& Env::print_all (std::ostream& parStream, const char* parNewline) const {
+		for (std::size_t z = 0; z < m_cgi_env.size(); ++z) {
+			parStream << CGIVars::_from_integral(z) <<
+				" = \"" << m_cgi_env[z] << '"' << parNewline;
+		}
+		return parStream;
+	}
+
+} //namespace cgi
+} //namespace tawashi