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https://github.com/LadybirdBrowser/ladybird.git
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94ca55cefd
As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header.
105 lines
3.3 KiB
C++
105 lines
3.3 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <AK/ByteBuffer.h>
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#include <AK/StringView.h>
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#include <LibCore/CObject.h>
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class CIODevice : public CObject {
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C_OBJECT_ABSTRACT(CIODevice)
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public:
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enum OpenMode {
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NotOpen = 0,
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ReadOnly = 1,
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WriteOnly = 2,
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ReadWrite = 3,
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Append = 4,
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Truncate = 8,
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MustBeNew = 16,
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};
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virtual ~CIODevice() override;
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int fd() const { return m_fd; }
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unsigned mode() const { return m_mode; }
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bool is_open() const { return m_mode != NotOpen; }
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bool eof() const { return m_eof; }
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int error() const { return m_error; }
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const char* error_string() const;
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bool has_error() const { return m_error != 0; }
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int read(u8* buffer, int length);
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ByteBuffer read(int max_size);
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ByteBuffer read_line(int max_size);
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ByteBuffer read_all();
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bool write(const u8*, int size);
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bool write(const StringView& v) { return write((const u8*)v.characters_without_null_termination(), v.length()); }
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// FIXME: I would like this to be const but currently it needs to call populate_read_buffer().
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bool can_read_line();
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bool can_read() const;
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enum class SeekMode {
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SetPosition,
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FromCurrentPosition,
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FromEndPosition,
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};
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bool seek(i64, SeekMode = SeekMode::SetPosition, off_t* = nullptr);
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virtual bool open(CIODevice::OpenMode) = 0;
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virtual bool close();
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int printf(const char*, ...);
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protected:
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explicit CIODevice(CObject* parent = nullptr);
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void set_fd(int);
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void set_mode(OpenMode mode) { m_mode = mode; }
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void set_error(int error) { m_error = error; }
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void set_eof(bool eof) { m_eof = eof; }
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virtual void did_update_fd(int) {}
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private:
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bool populate_read_buffer();
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bool can_read_from_fd() const;
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int m_fd { -1 };
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int m_error { 0 };
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bool m_eof { false };
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OpenMode m_mode { NotOpen };
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Vector<u8> m_buffered_data;
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};
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