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#include <mbgl/storage/file_source.hpp>
#include <mbgl/storage/file_request.hpp>
#include <mbgl/storage/http_request.hpp>
#include <mbgl/storage/sqlite_store.hpp>
#include <mbgl/util/uv-messenger.h>
#include <uv.h>
namespace mbgl {
FileSource::FileSource(uv_loop_t *loop_)
: thread_id(uv_thread_self()),
store(std::shared_ptr<SQLiteStore>(new SQLiteStore(loop_, "cache.db"))),
loop(loop_),
queue(new uv_messenger_t) {
uv_messenger_init(loop, queue, [](void *ptr) {
std::unique_ptr<std::function<void()>> fn { reinterpret_cast<std::function<void()> *>(ptr) };
(*fn)();
});
}
FileSource::~FileSource() {
assert(thread_id == uv_thread_self());
uv_messenger_stop(queue);
}
void FileSource::setBase(const std::string &value) {
assert(thread_id == uv_thread_self());
base = value;
}
const std::string &FileSource::getBase() const {
assert(thread_id == uv_thread_self());
return base;
}
std::unique_ptr<Request> FileSource::request(ResourceType type, const std::string &url) {
assert(thread_id == uv_thread_self());
// Make URL absolute.
const std::string absoluteURL = [&]() -> std::string {
const size_t separator = url.find("://");
if (separator == std::string::npos) {
// Relative URL.
return base + url;
} else {
return url;
}
}();
std::shared_ptr<BaseRequest> request;
// First, try to find an existing Request object.
auto it = pending.find(absoluteURL);
if (it != pending.end()) {
request = it->second.lock();
}
if (!request) {
if (absoluteURL.substr(0, 7) == "file://") {
request = std::make_shared<FileRequest>(absoluteURL.substr(7), loop);
} else {
request = std::make_shared<HTTPRequest>(type, absoluteURL, loop, store);
}
pending.emplace(absoluteURL, request);
}
return std::unique_ptr<Request>(new Request(request));
}
void FileSource::prepare(std::function<void()> fn) {
if (thread_id == uv_thread_self()) {
fn();
} else {
uv_messenger_send(queue, new std::function<void()>(std::move(fn)));
}
}
}
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