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/* Copyright 2014-present Facebook, Inc.
* Licensed under the Apache License, Version 2.0 */
#include "watchman.h"
using watchman::FileDescriptor;
namespace {
class StdioStream : public watchman_stream {
const FileDescriptor& fd_;
public:
explicit StdioStream(const FileDescriptor& fd) : fd_(fd) {}
int read(void* buf, int size) override {
auto result = fd_.read(buf, size);
if (result.hasError()) {
errno = result.error().value();
#ifdef _WIN32
// TODO: propagate Result<int, std::error_code> as return type
errno = map_win32_err(errno);
#endif
return -1;
}
return result.value();
}
int write(const void* buf, int size) override {
auto result = fd_.write(buf, size);
if (result.hasError()) {
errno = result.error().value();
#ifdef _WIN32
// TODO: propagate Result<int, std::error_code> as return type
errno = map_win32_err(errno);
#endif
return -1;
}
return result.value();
}
w_evt_t getEvents() override {
w_log(W_LOG_FATAL, "calling get_events on a stdio stm\n");
return nullptr;
}
void setNonBlock(bool) override {}
bool rewind() override {
return false;
}
bool shutdown() override {
return false;
}
bool peerIsOwner() override {
return false;
}
pid_t getPeerProcessID() const override {
return 0;
}
const watchman::FileDescriptor& getFileDescriptor() const override {
return fd_;
}
};
}
w_stm_t w_stm_stdout(void) {
static StdioStream stdoutStream(FileDescriptor::stdOut());
return &stdoutStream;
}
w_stm_t w_stm_stdin(void) {
static StdioStream stdinStream(FileDescriptor::stdIn());
return &stdinStream;
}
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