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4a57be824c
This converts the return value of File::read_link() from String to ErrorOr<String>. The rest of the change is to support the potential of an Error being returned and subsequent release of the value when no Error is returned. Unfortunately at this stage none of the places affected can utililize our TRY() macro.
119 lines
3.5 KiB
C++
119 lines
3.5 KiB
C++
/*
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* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Error.h>
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#include <AK/String.h>
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#include <LibCore/IODevice.h>
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#include <sys/stat.h>
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namespace Core {
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class File final : public IODevice {
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C_OBJECT(File)
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public:
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virtual ~File() override;
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static ErrorOr<NonnullRefPtr<File>> open(String filename, OpenMode, mode_t = 0644);
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String filename() const { return m_filename; }
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void set_filename(const String filename) { m_filename = move(filename); }
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bool is_directory() const;
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static bool is_directory(String const& filename);
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bool is_device() const;
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static bool is_device(String const& filename);
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bool is_link() const;
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static bool is_link(String const& filename);
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bool looks_like_shared_library() const;
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static bool looks_like_shared_library(String const& filename);
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static bool exists(String const& filename);
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static ErrorOr<size_t> size(String const& filename);
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static bool ensure_parent_directories(String const& path);
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static bool ensure_directories(String const& path);
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static String current_working_directory();
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static String absolute_path(String const& path);
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enum class RecursionMode {
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Allowed,
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Disallowed
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};
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enum class LinkMode {
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Allowed,
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Disallowed
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};
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enum class AddDuplicateFileMarker {
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Yes,
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No,
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};
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enum class PreserveMode {
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Nothing,
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PermissionsOwnershipTimestamps,
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};
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struct CopyError : public Error {
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CopyError(int error_code, bool t)
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: Error(error_code)
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, tried_recursing(t)
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{
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}
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bool tried_recursing;
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};
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static ErrorOr<void, CopyError> copy_file(String const& dst_path, struct stat const& src_stat, File& source, PreserveMode = PreserveMode::Nothing);
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static ErrorOr<void, CopyError> copy_directory(String const& dst_path, String const& src_path, struct stat const& src_stat, LinkMode = LinkMode::Disallowed, PreserveMode = PreserveMode::Nothing);
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static ErrorOr<void, CopyError> copy_file_or_directory(String const& dst_path, String const& src_path, RecursionMode = RecursionMode::Allowed, LinkMode = LinkMode::Disallowed, AddDuplicateFileMarker = AddDuplicateFileMarker::Yes, PreserveMode = PreserveMode::Nothing);
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static String real_path_for(String const& filename);
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static ErrorOr<String> read_link(String const& link_path);
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static ErrorOr<void> link_file(String const& dst_path, String const& src_path);
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struct RemoveError : public Error {
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RemoveError(String f, int error_code)
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: Error(error_code)
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, file(move(f))
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{
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}
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String file;
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};
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static ErrorOr<void, RemoveError> remove(String const& path, RecursionMode, bool force);
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virtual bool open(OpenMode) override;
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enum class ShouldCloseFileDescriptor {
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No = 0,
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Yes
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};
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bool open(int fd, OpenMode, ShouldCloseFileDescriptor);
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[[nodiscard]] int leak_fd();
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static NonnullRefPtr<File> standard_input();
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static NonnullRefPtr<File> standard_output();
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static NonnullRefPtr<File> standard_error();
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private:
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File(Object* parent = nullptr)
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: IODevice(parent)
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{
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}
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explicit File(String filename, Object* parent = nullptr);
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bool open_impl(OpenMode, mode_t);
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String m_filename;
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ShouldCloseFileDescriptor m_should_close_file_descriptor { ShouldCloseFileDescriptor::Yes };
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};
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}
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