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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 <sstream>
#include "Resource.hpp"
#include "ResourceLocator.hpp"
namespace ousia {
/* Class ResourceLocator */
bool ResourceLocator::locate(Resource &resource, const std::string &path,
const ResourceType type,
const Resource &relativeTo) const
{
// If the locator of the given relative resource is this locator instance,
// use the location specified in the resource, otherwise just use no
// "relativeTo" path.
if (&relativeTo.getLocator() == this) {
return locate(resource, path, type, relativeTo.getLocation());
}
return locate(resource, path, type, "");
}
bool ResourceLocator::locate(Resource &resource, const std::string &path,
const ResourceType type,
const std::string &relativeTo) const
{
// Try to locate the resource for the specified type, if not found, use
// the "UNKNOWN" type.
if (doLocate(resource, path, type, relativeTo)) {
return true;
}
if (type != ResourceType::UNKNOWN) {
return doLocate(resource, path, ResourceType::UNKNOWN, relativeTo);
}
return false;
}
std::unique_ptr<std::istream> ResourceLocator::stream(
const std::string &location) const
{
return doStream(location);
}
/* Class StaticResourceLocator */
bool StaticResourceLocator::doLocate(Resource &resource,
const std::string &path,
const ResourceType type,
const std::string &relativeTo) const
{
auto it = resources.find(path);
if (it != resources.end()) {
resource = Resource(true, *this, type, path);
return true;
}
return false;
}
std::unique_ptr<std::istream> StaticResourceLocator::doStream(
const std::string &location) const
{
auto it = resources.find(location);
if (it != resources.end()) {
return std::unique_ptr<std::istream>{new std::stringstream{it->second}};
}
return std::unique_ptr<std::istream>{new std::stringstream{""}};
}
void StaticResourceLocator::store(const std::string &path,
const std::string &data)
{
auto it = resources.find(path);
if (it != resources.end()) {
it->second = data;
} else {
resources.emplace(path, data);
}
}
/* Class NullResourceLocatorImpl */
bool NullResourceLocatorImpl::doLocate(Resource &resource,
const std::string &path,
const ResourceType type,
const std::string &relativeTo) const
{
return false;
}
std::unique_ptr<std::istream> NullResourceLocatorImpl::doStream(
const std::string &location) const
{
return std::unique_ptr<std::istream>{new std::stringstream{""}};
}
const NullResourceLocatorImpl NullResourceLocator;
}
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