Retro68/LaunchAPPL/Client/SharedFile.cc

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#include "SharedFile.h"
#include "StreamBasedLauncher.h"
#include "Utilities.h"
#include "Stream.h"
#include "ServerProtocol.h"
#include <chrono>
#include <iostream>
#include <boost/filesystem.hpp>
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#include <boost/filesystem/fstream.hpp>
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namespace fs = boost::filesystem;
namespace po = boost::program_options;
using namespace std::literals::chrono_literals;
class SharedFileStream : public WaitableStream
{
static const long kReadBufferSize = 4096;
uint8_t readBuffer[kReadBufferSize];
fs::path shared_directory;
public:
virtual void write(const void* p, size_t n) override;
virtual void wait() override;
SharedFileStream(po::variables_map &options);
~SharedFileStream();
};
class SharedFileLauncher : public StreamBasedLauncher
{
SharedFileStream stream;
public:
SharedFileLauncher(po::variables_map& options);
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};
SharedFileStream::SharedFileStream(po::variables_map &options)
{
shared_directory = options["shared-directory"].as<std::string>();
}
SharedFileStream::~SharedFileStream()
{
}
void SharedFileStream::write(const void* p, size_t n)
{
if(n == 0)
return;
{
fs::ofstream out(shared_directory / "in_channel_1", std::ios::binary);
out.write((const char*)p, n);
}
fs::rename(shared_directory / "in_channel_1", shared_directory / "in_channel");
do
{
usleep(100000);
} while(fs::exists(shared_directory / "in_channel"));
}
void SharedFileStream::wait()
{
usleep(100000);
if(fs::exists(shared_directory / "out_channel"))
{
{
fs::ifstream in(shared_directory / "out_channel");
while(in.read((char*)readBuffer, sizeof(readBuffer)), in.gcount() > 0)
notifyReceive(readBuffer, in.gcount());
}
fs::remove(shared_directory / "out_channel");
}
}
SharedFileLauncher::SharedFileLauncher(po::variables_map &options)
: StreamBasedLauncher(options), stream(options)
{
SetupStream(&stream);
}
void SharedFile::GetOptions(options_description &desc)
{
desc.add_options()
("shared-directory", po::value<std::string>(), "Path to a directory shared with the old mac")
;
}
bool SharedFile::CheckOptions(variables_map &options)
{
return options.count("shared-directory") != 0;
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}
std::unique_ptr<Launcher> SharedFile::MakeLauncher(variables_map &options)
{
return std::unique_ptr<Launcher>(new SharedFileLauncher(options));
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}