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LibCore: Use ErrorOr<T> for Core::File::open()

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This commit is contained in:
Andreas Kling 2021-11-07 02:15:10 +01:00
parent fac2550143
commit a7f1f1c34b
24 changed files with 42 additions and 48 deletions
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4
Userland/Libraries/LibCore/File.cpp
View file

@ -27,11 +27,11 @@
namespace Core {
Result<NonnullRefPtr<File>, OSError> File::open(String filename, OpenMode mode, mode_t permissions)
ErrorOr<NonnullRefPtr<File>> File::open(String filename, OpenMode mode, mode_t permissions)
{
auto file = File::construct(move(filename));
if (!file->open_impl(mode, permissions))
return OSError(file->error());
return Error::from_errno(file->error());
return file;
}

4
Userland/Libraries/LibCore/File.h
View file

@ -7,8 +7,6 @@
#pragma once
#include <AK/Error.h>
#include <AK/OSError.h>
#include <AK/Result.h>
#include <AK/String.h>
#include <LibCore/IODevice.h>
#include <sys/stat.h>
@ -20,7 +18,7 @@ class File final : public IODevice {
public:
virtual ~File() override;
static Result<NonnullRefPtr<File>, OSError> open(String filename, OpenMode, mode_t = 0644);
static ErrorOr<NonnullRefPtr<File>> open(String filename, OpenMode, mode_t = 0644);
String filename() const { return m_filename; }
void set_filename(const String filename) { m_filename = move(filename); }

45
Userland/Libraries/LibCore/FileStream.h
View file

@ -9,6 +9,7 @@
#include <AK/Buffered.h>
#include <AK/ByteBuffer.h>
#include <AK/Stream.h>
#include <AK/Try.h>
#include <LibCore/File.h>
namespace Core {
@ -20,28 +21,18 @@ public:
{
}
static Result<InputFileStream, OSError> open(StringView filename, OpenMode mode = OpenMode::ReadOnly, mode_t permissions = 0644)
static ErrorOr<InputFileStream> open(StringView filename, OpenMode mode = OpenMode::ReadOnly, mode_t permissions = 0644)
{
VERIFY(has_flag(mode, OpenMode::ReadOnly));
auto file_result = File::open(filename, mode, permissions);
if (file_result.is_error())
return file_result.error();
return InputFileStream { file_result.value() };
auto file = TRY(File::open(filename, mode, permissions));
return InputFileStream { move(file) };
}
static Result<Buffered<InputFileStream>, OSError> open_buffered(StringView filename, OpenMode mode = OpenMode::ReadOnly, mode_t permissions = 0644)
static ErrorOr<Buffered<InputFileStream>> open_buffered(StringView filename, OpenMode mode = OpenMode::ReadOnly, mode_t permissions = 0644)
{
VERIFY(has_flag(mode, OpenMode::ReadOnly));
auto file_result = File::open(filename, mode, permissions);
if (file_result.is_error())
return file_result.error();
return Buffered<InputFileStream> { file_result.value() };
auto file = TRY(File::open(filename, mode, permissions));
return Buffered<InputFileStream> { move(file) };
}
size_t read(Bytes bytes) override
@ -89,28 +80,18 @@ public:
{
}
static Result<OutputFileStream, OSError> open(StringView filename, OpenMode mode = OpenMode::WriteOnly, mode_t permissions = 0644)
static ErrorOr<OutputFileStream> open(StringView filename, OpenMode mode = OpenMode::WriteOnly, mode_t permissions = 0644)
{
VERIFY(has_flag(mode, OpenMode::WriteOnly));
auto file_result = File::open(filename, mode, permissions);
if (file_result.is_error())
return file_result.error();
return OutputFileStream { file_result.value() };
auto file = TRY(File::open(filename, mode, permissions));
return OutputFileStream { move(file) };
}
static Result<Buffered<OutputFileStream>, OSError> open_buffered(StringView filename, OpenMode mode = OpenMode::WriteOnly, mode_t permissions = 0644)
static ErrorOr<Buffered<OutputFileStream>> open_buffered(StringView filename, OpenMode mode = OpenMode::WriteOnly, mode_t permissions = 0644)
{
VERIFY(has_flag(mode, OpenMode::WriteOnly));
auto file_result = File::open(filename, mode, permissions);
if (file_result.is_error())
return file_result.error();
return Buffered<OutputFileStream> { file_result.value() };
auto file = TRY(File::open(filename, mode, permissions));
return Buffered<OutputFileStream> { move(file) };
}
static OutputFileStream standard_output()