forked from lix-project/lix
58 lines
1.3 KiB
C++
58 lines
1.3 KiB
C++
#include "remote-fs-accessor.hh"
|
||
#include "nar-accessor.hh"
|
||
|
||
namespace nix {
|
||
|
||
|
||
RemoteFSAccessor::RemoteFSAccessor(ref<Store> store)
|
||
: store(store)
|
||
{
|
||
}
|
||
|
||
std::pair<ref<FSAccessor>, Path> RemoteFSAccessor::fetch(const Path & path_)
|
||
{
|
||
auto path = canonPath(path_);
|
||
|
||
auto storePath = store->toStorePath(path);
|
||
std::string restPath = std::string(path, storePath.size());
|
||
|
||
if (!store->isValidPath(storePath))
|
||
throw InvalidPath(format("path ‘%1%’ is not a valid store path") % storePath);
|
||
|
||
auto i = nars.find(storePath);
|
||
if (i != nars.end()) return {i->second, restPath};
|
||
|
||
StringSink sink;
|
||
store->narFromPath(storePath, sink);
|
||
|
||
auto accessor = makeNarAccessor(sink.s);
|
||
nars.emplace(storePath, accessor);
|
||
return {accessor, restPath};
|
||
}
|
||
|
||
FSAccessor::Stat RemoteFSAccessor::stat(const Path & path)
|
||
{
|
||
auto res = fetch(path);
|
||
return res.first->stat(res.second);
|
||
}
|
||
|
||
StringSet RemoteFSAccessor::readDirectory(const Path & path)
|
||
{
|
||
auto res = fetch(path);
|
||
return res.first->readDirectory(res.second);
|
||
}
|
||
|
||
std::string RemoteFSAccessor::readFile(const Path & path)
|
||
{
|
||
auto res = fetch(path);
|
||
return res.first->readFile(res.second);
|
||
}
|
||
|
||
std::string RemoteFSAccessor::readLink(const Path & path)
|
||
{
|
||
auto res = fetch(path);
|
||
return res.first->readLink(res.second);
|
||
}
|
||
|
||
}
|