errors.cpp
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#include "crucible/windows/errors.hpp"
#include "crucible/windows/transcoding.hpp"
#include <Windows.h>
#include <type_traits>
static_assert(sizeof(::DWORD) <= sizeof(std::uint32_t));
static_assert(std::is_unsigned_v<::DWORD> == std::is_unsigned_v<std::uint32_t>);
namespace crucible::windows::errors {
namespace {
struct LocalFreeWarden final {
::HLOCAL pointer { nullptr };
~LocalFreeWarden();
};
LocalFreeWarden::~LocalFreeWarden() {
if (pointer) {
::LocalFree(pointer);
}
}
}
HostError::HostError() :
my_error_code { static_cast<std::uint32_t>(::GetLastError()) }
{}
auto HostError::describe() const -> std::string {
constexpr ::DWORD FLAGS { FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_MAX_WIDTH_MASK };
constexpr ::DWORD LANGUAGE_ID { 0 };
constexpr ::DWORD MINIMUM_SIZE { 0 };
::LPVOID message_source { nullptr };
auto const error_dword { static_cast<::DWORD>(my_error_code) };
::LPWSTR raw_utf16_message { nullptr };
// I *promise* this cast is intentionally bonkers
auto dont_blame_me_blame_microsoft { reinterpret_cast<::LPWSTR>(&raw_utf16_message) };
::va_list *arguments { nullptr };
::DWORD const characters_written { ::FormatMessageW(FLAGS, message_source, error_dword, LANGUAGE_ID, dont_blame_me_blame_microsoft, MINIMUM_SIZE, arguments) };
if (characters_written == 0) {
return "Failed to format error message (Windows API error code: " + std::to_string(my_error_code) + ")";
}
LocalFreeWarden warden { raw_utf16_message };
::DWORD const characters_written_excluding_terminator { characters_written - 1 };
std::wstring const utf16_message(raw_utf16_message, characters_written_excluding_terminator);
auto const transcoding_result { transcoding::transcode_utf16_to_utf8(utf16_message) };
return transcoding_result.match(
[this](Error const &) -> std::string { return "Failed to transcode error message to UTF-8 (Windows API error code: " + std::to_string(my_error_code) + ")"; },
[](std::string const &utf8_message) { return utf8_message; }
);
}
auto HostError::format(core::format::Context const &context) const -> std::string {
auto const format_fields {
[this](core::format::Context const &context) -> std::string {
return core::format::build_fields(context)
.add("my_error_code", my_error_code)
.get();
}
};
return core::format::format_record(context, "crucible::windows::errors::HostError", format_fields);
}
auto CreateDirectoryWFailed::describe() const -> std::string {
return "::CreateDirectoryW() failed: " + host_error.describe();
}
auto CreateDirectoryWFailed::format(core::format::Context const &context) const -> std::string {
auto const format_fields {
[this](core::format::Context const &context) -> std::string {
return core::format::build_fields(context)
.add("host_error", host_error)
.get();
}
};
return core::format::format_record(context, "crucible::windows::errors::CreateDirectoryWFailed", format_fields);
}
auto CreateFileWFailed::describe() const -> std::string {
return "::CreateFileW() failed: " + host_error.describe();
}
auto CreateFileWFailed::format(core::format::Context const &context) const -> std::string {
auto const format_fields {
[this](core::format::Context const &context) -> std::string {
return core::format::build_fields(context)
.add("host_error", host_error)
.get();
}
};
return core::format::format_record(context, "crucible::windows::errors::CreateFileWFailed", format_fields);
}
auto DeleteFileWFailed::describe() const -> std::string {
return "::DeleteFileW() failed: " + host_error.describe();
}
auto DeleteFileWFailed::format(core::format::Context const &context) const -> std::string {
auto const format_fields {
[this](core::format::Context const &context) -> std::string {
return core::format::build_fields(context)
.add("host_error", host_error)
.get();
}
};
return core::format::format_record(context, "crucible::windows::errors::DeleteFileWFailed", format_fields);
}
auto GetFileAttributesWFailed::describe() const -> std::string {
return "::GetFileAttributesW() failed: " + host_error.describe();
}
auto GetFileAttributesWFailed::format(core::format::Context const &context) const -> std::string {
auto const format_fields {
[this](core::format::Context const &context) -> std::string {
return core::format::build_fields(context)
.add("host_error", host_error)
.get();
}
};
return core::format::format_record(context, "crucible::windows::errors::GetFileAttributesWFailed", format_fields);
}
auto GetFileSizeExFailed::describe() const -> std::string {
return "::GetFileSizeEx() failed: " + host_error.describe();
}
auto GetFileSizeExFailed::format(core::format::Context const &context) const -> std::string {
auto const format_fields {
[this](core::format::Context const &context) -> std::string {
return core::format::build_fields(context)
.add("host_error", host_error)
.get();
}
};
return core::format::format_record(context, "crucible::windows::errors::GetFileSizeExFailed", format_fields);
}
auto FindFirstFileWFailed::describe() const -> std::string {
return "::FindFirstFileW() failed: " + host_error.describe();
}
auto FindFirstFileWFailed::format(core::format::Context const &context) const -> std::string {
auto const format_fields {
[this](core::format::Context const &context) -> std::string {
return core::format::build_fields(context)
.add("host_error", host_error)
.get();
}
};
return core::format::format_record(context, "crucible::windows::errors::FindFirstFileWFailed", format_fields);
}
auto FindNextFileWFailed::describe() const -> std::string {
return "::FindNextFileW() failed: " + host_error.describe();
}
auto FindNextFileWFailed::format(core::format::Context const &context) const -> std::string {
auto const format_fields {
[this](core::format::Context const &context) -> std::string {
return core::format::build_fields(context)
.add("host_error", host_error)
.get();
}
};
return core::format::format_record(context, "crucible::windows::errors::FindNextFileWFailed", format_fields);
}
auto MultiByteToWideCharFailed::describe() const -> std::string {
return "::MultiByteToWideChar() failed: " + host_error.describe();
}
auto MultiByteToWideCharFailed::format(core::format::Context const &context) const -> std::string {
auto const format_fields {
[this](core::format::Context const &context) -> std::string {
return core::format::build_fields(context)
.add("host_error", host_error)
.get();
}
};
return core::format::format_record(context, "crucible::windows::errors::MultiByteToWideCharFailed", format_fields);
}
auto ReadFileFailed::describe() const -> std::string {
return "::ReadFile() failed: " + host_error.describe();
}
auto ReadFileFailed::format(core::format::Context const &context) const -> std::string {
auto const format_fields {
[this](core::format::Context const &context) -> std::string {
return core::format::build_fields(context)
.add("host_error", host_error)
.get();
}
};
return core::format::format_record(context, "crucible::windows::errors::ReadFileFailed", format_fields);
}
auto RemoveDirectoryWFailed::describe() const -> std::string {
return "::RemoveDirectoryW() failed: " + host_error.describe();
}
auto RemoveDirectoryWFailed::format(core::format::Context const &context) const -> std::string {
auto const format_fields {
[this](core::format::Context const &context) -> std::string {
return core::format::build_fields(context)
.add("host_error", host_error)
.get();
}
};
return core::format::format_record(context, "crucible::windows::errors::RemoveDirectoryWFailed", format_fields);
}
auto WideCharToMultiByteFailed::describe() const -> std::string {
return "::WideCharToMultiByte() failed: " + host_error.describe();
}
auto WideCharToMultiByteFailed::format(core::format::Context const &context) const -> std::string {
auto const format_fields {
[this](core::format::Context const &context) -> std::string {
return core::format::build_fields(context)
.add("host_error", host_error)
.get();
}
};
return core::format::format_record(context, "crucible::windows::errors::WideCharToMultiByteFailed", format_fields);
}
auto WriteFileFailed::describe() const -> std::string {
return "::WriteFile() failed: " + host_error.describe();
}
auto WriteFileFailed::format(core::format::Context const &context) const -> std::string {
auto const format_fields {
[this](core::format::Context const &context) -> std::string {
return core::format::build_fields(context)
.add("host_error", host_error)
.get();
}
};
return core::format::format_record(context, "crucible::windows::errors::WriteFileFailed", format_fields);
}
auto InputTooLarge::describe() const -> std::string {
return "Input string was too large to transcode";
}
auto InputTooLarge::format(core::format::Context const &context) const -> std::string {
auto const format_fields {
[](core::format::Context const &context) -> std::string {
return core::format::build_fields(context)
.get();
}
};
return core::format::format_record(context, "crucible::windows::errors::InputTooLarge", format_fields);
}
auto NegativeFileSize::describe() const -> std::string {
return "The system reported a negative file size";
}
auto NegativeFileSize::format(core::format::Context const &context) const -> std::string {
auto const format_fields {
[](core::format::Context const &context) -> std::string {
return core::format::build_fields(context)
.get();
}
};
return core::format::format_record(context, "crucible::windows::errors::NegativeFileSize", format_fields);
}
auto OutputTruncated::describe() const -> std::string {
return "Output of transcoder was truncated";
}
auto OutputTruncated::format(core::format::Context const &context) const -> std::string {
auto const format_fields {
[](core::format::Context const &context) -> std::string {
return core::format::build_fields(context)
.get();
}
};
return core::format::format_record(context, "crucible::windows::errors::OutputTruncated", format_fields);
}
}