1 files changed, 77 insertions, 0 deletions
diff --git a/src/plugins/boost/FileLocator.cpp b/src/plugins/boost/FileLocator.cpp
new file mode 100644
index 0000000..ed9d0c9
--- /dev/null
+++ b/src/plugins/boost/FileLocator.cpp
@@ -0,0 +1,77 @@
+/*
+    Ousía
+    Copyright (C) 2014, 2015  Benjamin Paaßen, Andreas Stöckel
+
+    This program 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.
+
+    This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "FileLocator.hpp"
+
+#include <fstream>
+
+namespace ousia {
+
+void FileLocator::addSearchPath(const boost::filesystem::path &path,
+                                std::set<ResourceLocator::Type> types)
+{
+	for (auto &type : types) {
+		// retrieve the path vector for the given type.
+		auto it = searchPaths.find(type);
+		if (it != searchPaths.end()) {
+			it->second.push_back(path);
+		} else {
+			std::vector<boost::filesystem::path> v{path};
+			searchPaths.insert({type, v});
+		}
+	}
+}
+
+ResourceLocator::Location FileLocator::locate(const std::string &path,
+                                              const std::string &relativeTo,
+                                              const Type type) const
+{
+	boost::filesystem::path base(relativeTo);
+	// use the / operator to append the path.
+	base /= path;
+	// if we already found a fitting resource there, use that.
+	if (boost::filesystem::exists(base)) {
+		std::string location =
+		    boost::filesystem::canonical(base).generic_string();
+		return ResourceLocator::Location(true, *this, type, location);
+	}
+	// otherwise look in the search paths.
+	auto it = searchPaths.find(type);
+	if (it != searchPaths.end()) {
+		for (boost::filesystem::path p : it->second) {
+			p /= path;
+			if (boost::filesystem::exists(p)) {
+				std::string location =
+				    boost::filesystem::canonical(p).generic_string();
+				return ResourceLocator::Location(true, *this, type, location);
+			}
+		}
+	}
+	// if we find the resource in none of the search paths we return a location.
+	// with the found flag set to false.
+	ResourceLocator::Location l(false, *this, type, "");
+	return l;
+}
+
+std::unique_ptr<std::istream> FileLocator::stream(
+    const std::string &location) const
+{
+	std::unique_ptr<std::istream> ifs{new std::ifstream(location)};
+	return std::move(ifs);
+}
+}