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/*
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 <boost/filesystem.hpp>
#include <fstream>
namespace ousia {
void FileLocator::addSearchPath(const std::string &path,
std::set<ResourceType> types)
{
// Canonicalize the given path
std::string canonicalPath =
boost::filesystem::canonical(path).generic_string();
// Insert the path for all given types.
for (auto &type : types) {
auto it = searchPaths.find(type);
if (it != searchPaths.end()) {
it->second.push_back(canonicalPath);
} else {
searchPaths.insert({type, {canonicalPath}});
}
}
}
bool FileLocator::doLocate(Resource &resource, const std::string &path,
const ResourceType type,
const std::string &relativeTo) const
{
boost::filesystem::path base(relativeTo);
if (boost::filesystem::exists(base)) {
// Look if 'relativeTo' is a directory already.
if (!boost::filesystem::is_directory(base)) {
// If not we use the parent directory.
base = base.parent_path();
}
// 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();
resource = Resource(true, *this, type, location);
return true;
}
}
// 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();
resource = Resource(true, *this, type, location);
return true;
}
}
}
return false;
}
std::unique_ptr<std::istream> FileLocator::doStream(
const std::string &location) const
{
std::unique_ptr<std::istream> ifs{new std::ifstream(location)};
return std::move(ifs);
}
}
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