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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 <core/common/Exceptions.hpp>
#include <core/common/Utils.hpp>
#include <core/parser/Parser.hpp>
#include <core/resource/Resource.hpp>
#include <core/resource/ResourceLocator.hpp>
#include "Registry.hpp"
namespace ousia {
/* Class Registry */
void Registry::registerParser(const std::set<std::string> &mimetypes,
const RttiSet &types, Parser *parser)
{
for (const std::string &mimetype : mimetypes) {
// Make sure no other parser was given for this mimetype
auto it = parsers.find(mimetype);
if (it != parsers.end()) {
throw OusiaException{std::string{"Parser for mimetype "} +
mimetype +
std::string{" already registered."}};
}
// Store a reference at the parser and a copy of the given RttiSet
parsers[mimetype] = std::pair<Parser *, RttiSet>{parser, types};
}
}
static const std::pair<Parser *, RttiSet> NullParser{nullptr, RttiSet{}};
const std::pair<Parser *, RttiSet> &Registry::getParserForMimetype(
const std::string &mimetype) const
{
const auto it = parsers.find(mimetype);
if (it != parsers.end()) {
return it->second;
}
return NullParser;
}
void Registry::registerExtension(const std::string &extension,
const std::string &mimetype)
{
// Always use extensions in lower case
std::string ext = Utils::toLower(extension);
// Make sure the extension is unique
auto it = extensions.find(ext);
if (it != extensions.end()) {
throw OusiaException{std::string{"Extension "} + extension +
std::string{" already registered."}};
}
// Register the mimetype
extensions[ext] = mimetype;
}
void Registry::registerDefaultExtensions()
{
registerExtension("osml", "text/vnd.ousia.osml");
registerExtension("osxml", "text/vnd.ousia.osml+xml");
}
std::string Registry::getMimetypeForExtension(
const std::string &extension) const
{
// Always use extensions in lower case
std::string ext = Utils::toLower(extension);
// Try to find the extension
auto it = extensions.find(ext);
if (it != extensions.end()) {
return it->second;
}
return std::string{};
}
std::string Registry::getMimetypeForFilename(const std::string &filename) const
{
// Fetch the file extension
std::string ext = Utils::extractFileExtension(filename);
if (ext.empty()) {
return std::string{};
}
// Fetch the mimetype for the extension
return getMimetypeForExtension(ext);
}
void Registry::registerResourceLocator(ResourceLocator *locator)
{
locators.push_back(locator);
}
bool Registry::locateResource(Resource &resource, const std::string &path,
ResourceType type,
const Resource &relativeTo) const
{
// Try the locator of the given "relativeTo" resource first
if (relativeTo.isValid()) {
if (relativeTo.getLocator().locate(resource, path, type, relativeTo)) {
return true;
}
}
// Iterate over all registered locators and try to resolve the given path
for (auto &locator : locators) {
if (locator->locate(resource, path, type, relativeTo)) {
return true;
}
}
return false;
}
}
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