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