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#include <mbgl/storage/local_file_source.hpp>
#include <mbgl/storage/file_source_request.hpp>
#include <mbgl/storage/response.hpp>
#include <mbgl/util/string.hpp>
#include <mbgl/util/thread.hpp>
#include <mbgl/util/url.hpp>
#include <mbgl/util/util.hpp>
#include <mbgl/util/io.hpp>
#include <sys/types.h>
#include <sys/stat.h>
#if defined(_WINDOWS) && !defined(S_ISDIR)
#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
#endif
namespace {
const char* protocol = "file://";
const std::size_t protocolLength = 7;
} // namespace
namespace mbgl {
class LocalFileSource::Impl {
public:
Impl(ActorRef<Impl>) {}
void request(const std::string& url, ActorRef<FileSourceRequest> req) {
// Cut off the protocol
std::string path = mbgl::util::percentDecode(url.substr(protocolLength));
Response response;
struct stat buf;
int result = stat(path.c_str(), &buf);
if (result == 0 && S_ISDIR(buf.st_mode)) {
response.error = std::make_unique<Response::Error>(Response::Error::Reason::NotFound);
} else if (result == -1 && errno == ENOENT) {
response.error = std::make_unique<Response::Error>(Response::Error::Reason::NotFound);
} else {
try {
response.data = std::make_shared<std::string>(util::read_file(path));
} catch (...) {
response.error = std::make_unique<Response::Error>(
Response::Error::Reason::Other,
util::toString(std::current_exception()));
}
}
req.invoke(&FileSourceRequest::setResponse, response);
}
};
LocalFileSource::LocalFileSource()
: impl(std::make_unique<util::Thread<Impl>>("LocalFileSource")) {
}
LocalFileSource::~LocalFileSource() = default;
std::unique_ptr<AsyncRequest> LocalFileSource::request(const Resource& resource, Callback callback) {
auto req = std::make_unique<FileSourceRequest>(std::move(callback));
impl->actor().invoke(&Impl::request, resource.url, req->actor());
return std::move(req);
}
bool LocalFileSource::acceptsURL(const std::string& url) {
return url.compare(0, protocolLength, protocol) == 0;
}
} // namespace mbgl
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