82 lines
2.0 KiB
C++
82 lines
2.0 KiB
C++
#pragma once
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#include <chrono>
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#include "libuv.h"
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#include "Task.h"
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#include "Support/JSON.h"
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#include "Support/Enum.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/ADT/FunctionExtras.h"
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namespace clice::async {
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template <typename T>
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using Result = std::expected<T, std::error_code>;
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template <typename T>
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using AsyncResult = Task<std::expected<T, std::error_code>>;
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namespace fs {
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using handle = uv_file;
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struct Mode : refl::Enum<Mode, true> {
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enum Kind {
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/// Open the file for reading.
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Read = 0,
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/// Open the file for writing.
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Write,
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/// Open the file for reading and writing.
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ReadWrite,
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/// If the file does not exist, create it.
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Create,
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/// If the file exists, append the data to the end of the file.
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Append,
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/// If the file exists, truncate the file to zero length.
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Truncate,
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/// If the file exists, fail the open.
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Exclusive,
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};
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using Enum::Enum;
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};
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/// Open the file asynchronously.
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[[nodiscard]] AsyncResult<handle> open(std::string path, Mode mode);
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/// Close the file asynchronously.
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[[nodiscard]] AsyncResult<void> close(handle file);
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/// Read the file asynchronously, make sure the buffer is valid until the task is done.
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[[nodiscard]] AsyncResult<ssize_t> read(handle file, char* buffer, std::size_t size);
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[[nodiscard]] AsyncResult<std::string> read(std::string path, Mode mode = Mode::Read);
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/// Write the file asynchronously, make sure the buffer is valid until the task is done.
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[[nodiscard]] AsyncResult<void> write(handle file, char* buffer, std::size_t size);
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[[nodiscard]] AsyncResult<void> write(std::string path,
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char* buffer,
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std::size_t size,
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Mode mode = Mode(Mode::Write, Mode::Create, Mode::Truncate));
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struct Stats {
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std::chrono::milliseconds mtime;
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};
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AsyncResult<Stats> stat(std::string path);
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} // namespace fs
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} // namespace clice::async
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