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vcmi/lib/filesystem/AdapterLoaders.cpp
2014-05-21 13:02:20 +04:00

138 lines
3.9 KiB
C++

#include "StdInc.h"
#include "AdapterLoaders.h"
#include "../JsonNode.h"
#include "Filesystem.h"
CMappedFileLoader::CMappedFileLoader(const std::string & mountPoint, const JsonNode &config)
{
for(auto entry : config.Struct())
{
fileList[ResourceID(mountPoint + entry.first)] = ResourceID(mountPoint + entry.second.String());
}
}
std::unique_ptr<CInputStream> CMappedFileLoader::load(const ResourceID & resourceName) const
{
return CResourceHandler::get()->load(fileList.at(resourceName));
}
bool CMappedFileLoader::existsResource(const ResourceID & resourceName) const
{
return fileList.count(resourceName) != 0;
}
std::string CMappedFileLoader::getMountPoint() const
{
return ""; // does not have any meaning with this type of data source
}
boost::optional<std::string> CMappedFileLoader::getResourceName(const ResourceID & resourceName) const
{
return CResourceHandler::get()->getResourceName(fileList.at(resourceName));
}
std::unordered_set<ResourceID> CMappedFileLoader::getFilteredFiles(std::function<bool(const ResourceID &)> filter) const
{
std::unordered_set<ResourceID> foundID;
for (auto & file : fileList)
{
if (filter(file.first))
foundID.insert(file.first);
}
return foundID;
}
CFilesystemList::CFilesystemList()
{
//loaders = new std::vector<std::unique_ptr<ISimpleResourceLoader> >;
}
CFilesystemList::~CFilesystemList()
{
//delete loaders;
}
std::unique_ptr<CInputStream> CFilesystemList::load(const ResourceID & resourceName) const
{
// load resource from last loader that have it (last overridden version)
for (auto & loader : boost::adaptors::reverse(loaders))
{
if (loader->existsResource(resourceName))
return loader->load(resourceName);
}
throw std::runtime_error("Resource with name " + resourceName.getName() + " and type "
+ EResTypeHelper::getEResTypeAsString(resourceName.getType()) + " wasn't found.");
}
bool CFilesystemList::existsResource(const ResourceID & resourceName) const
{
for (auto & loader : loaders)
if (loader->existsResource(resourceName))
return true;
return false;
}
std::string CFilesystemList::getMountPoint() const
{
return "";
}
boost::optional<std::string> CFilesystemList::getResourceName(const ResourceID & resourceName) const
{
if (existsResource(resourceName))
return getResourcesWithName(resourceName).back()->getResourceName(resourceName);
return boost::optional<std::string>();
}
std::unordered_set<ResourceID> CFilesystemList::getFilteredFiles(std::function<bool(const ResourceID &)> filter) const
{
std::unordered_set<ResourceID> ret;
for (auto & loader : loaders)
for (auto & entry : loader->getFilteredFiles(filter))
ret.insert(entry);
return ret;
}
bool CFilesystemList::createResource(std::string filename, bool update)
{
logGlobal->traceStream()<< "Creating " << filename;
for (auto & loader : boost::adaptors::reverse(loaders))
{
if (writeableLoaders.count(loader.get()) != 0 // writeable,
&& loader->createResource(filename, update)) // successfully created
{
// Check if resource was created successfully. Possible reasons for this to fail
// a) loader failed to create resource (e.g. read-only FS)
// b) in update mode, call with filename that does not exists
assert(load(ResourceID(filename)));
logGlobal->traceStream()<< "Resource created successfully";
return true;
}
}
logGlobal->traceStream()<< "Failed to create resource";
return false;
}
std::vector<const ISimpleResourceLoader *> CFilesystemList::getResourcesWithName(const ResourceID & resourceName) const
{
std::vector<const ISimpleResourceLoader *> ret;
for (auto & loader : loaders)
boost::range::copy(loader->getResourcesWithName(resourceName), std::back_inserter(ret));
return ret;
}
void CFilesystemList::addLoader(ISimpleResourceLoader * loader, bool writeable)
{
loaders.push_back(std::unique_ptr<ISimpleResourceLoader>(loader));
if (writeable)
writeableLoaders.insert(loader);
}