From 1bc059bfe42de9bc6e9ddba96998ea7aa1f95929 Mon Sep 17 00:00:00 2001
From: King_DuckZ <king_duckz@gmx.com>
Date: Fri, 21 Apr 2017 22:18:43 +0100
Subject: [PATCH] Export the list of supported languages to mustache.

---
 html/index.html.mstch        |  2 +-
 src/CMakeLists.txt           |  1 +
 src/list_highlight_langs.cpp | 34 ++++++++++++++++++++++++++++++++++
 src/list_highlight_langs.hpp | 27 +++++++++++++++++++++++++++
 src/response.cpp             | 13 ++++++++++++-
 5 files changed, 75 insertions(+), 2 deletions(-)
 create mode 100644 src/list_highlight_langs.cpp
 create mode 100644 src/list_highlight_langs.hpp

diff --git a/html/index.html.mstch b/html/index.html.mstch
index f654765..9a102c4 100644
--- a/html/index.html.mstch
+++ b/html/index.html.mstch
@@ -13,7 +13,7 @@
 			<select name="Language" class="selectBox">
 				<option value="None" selected="selected">None  </option>
 				{{#languages}}
-				<option value="{{html_language_name}}">{{language_name}}</option>
+				<option value="{{language_name}}">{{language_name}}</option>
 				{{/languages}}
 			</select>
 			
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index ab82adc..c104894 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -26,6 +26,7 @@ add_executable(${PROJECT_NAME}
 	ini_file.cpp
 	pathname/pathname.cpp
 	response_factory.cpp
+	list_highlight_langs.cpp
 )
 
 configure_file(
diff --git a/src/list_highlight_langs.cpp b/src/list_highlight_langs.cpp
new file mode 100644
index 0000000..f7b367b
--- /dev/null
+++ b/src/list_highlight_langs.cpp
@@ -0,0 +1,34 @@
+/* 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 "list_highlight_langs.hpp"
+#include <srchilite/langmap.h>
+#include <boost/range/adaptor/map.hpp>
+#include <boost/range/algorithm/copy.hpp>
+#include <boost/range/iterator_range_core.hpp>
+
+namespace tawashi {
+	HighlightLangList list_highlight_langs() {
+		const char langmap_path[] = "/usr/share/source-highlight";
+		srchilite::LangMap lang_map(langmap_path, "lang.map");
+		lang_map.open();
+
+		const auto lang_range = boost::make_iterator_range(lang_map.begin(), lang_map.end());
+		return boost::copy_range<HighlightLangList>(lang_range | boost::adaptors::map_keys);
+	}
+} //namespace tawashi
+
diff --git a/src/list_highlight_langs.hpp b/src/list_highlight_langs.hpp
new file mode 100644
index 0000000..76b409b
--- /dev/null
+++ b/src/list_highlight_langs.hpp
@@ -0,0 +1,27 @@
+/* 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/>.
+ */
+
+#pragma once
+
+#include <vector>
+#include <string>
+
+namespace tawashi {
+	typedef std::vector<std::string> HighlightLangList;
+
+	HighlightLangList list_highlight_langs();
+} //namespace tawashi
diff --git a/src/response.cpp b/src/response.cpp
index c7367dc..32ff60e 100644
--- a/src/response.cpp
+++ b/src/response.cpp
@@ -21,6 +21,7 @@
 #include "tawashiConfig.h"
 #include "duckhandy/stringize.h"
 #include "pathname/pathname.hpp"
+#include "list_highlight_langs.hpp"
 #include <utility>
 #include <cassert>
 #include <fstream>
@@ -87,6 +88,15 @@ namespace tawashi {
 			buffer << if_mstch.rdbuf();
 			return boost::make_optional(buffer.str());
 		}
+
+		mstch::array make_mstch_langmap() {
+			mstch::array retval;
+
+			for (auto&& lang : list_highlight_langs()) {
+				retval.push_back(mstch::map{{"language_name", std::move(lang)}});
+			}
+			return retval;
+		}
 	} //unnamed namespace
 
 	Response::Response (Types parRespType, std::string&& parValue, std::string&& parPageBaseName, const IniFile& parIni, bool parWantRedis) :
@@ -119,7 +129,8 @@ namespace tawashi {
 	void Response::send() {
 		mstch::map mustache_context {
 			{"version", std::string{STRINGIZE(VERSION_MAJOR) "." STRINGIZE(VERSION_MINOR) "." STRINGIZE(VERSION_PATCH)}},
-			{"base_uri", std::string(m_base_uri.data(), m_base_uri.size())}
+			{"base_uri", std::string(m_base_uri.data(), m_base_uri.size())},
+			{"languages", make_mstch_langmap()}
 		};
 
 		if (m_redis)