67 lines
1.9 KiB
C++
67 lines
1.9 KiB
C++
#include <mbgl/storage/local_file_source.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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#include <unistd.h>
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namespace {
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const char* protocol = "file://";
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const std::size_t protocolLength = 7;
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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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void request(const std::string& url, FileSource::Callback callback) {
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// Cut off the protocol
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std::string path = mbgl::util::percentDecode(url.substr(protocolLength));
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Response response;
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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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callback(response);
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}
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};
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LocalFileSource::LocalFileSource()
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: thread(std::make_unique<util::Thread<Impl>>(util::ThreadContext{"LocalFileSource", util::ThreadPriority::Low})) {
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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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return thread->invokeWithCallback(&Impl::request, resource.url, callback);
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}
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bool LocalFileSource::acceptsURL(const std::string& url) {
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return url.compare(0, protocolLength, protocol) == 0;
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}
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} // namespace mbgl
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