1/*
2 * Copyright (C) 2004-2017 Apple Inc. All rights reserved.
3 * Copyright (C) 2006 Alexey Proskuryakov <ap@nypop.com>
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#pragma once
28
29#include <array>
30#include <memory>
31#include <pal/text/UnencodableHandling.h>
32#include <unicode/umachine.h>
33#include <wtf/Forward.h>
34#include <wtf/Noncopyable.h>
35
36namespace WebCore {
37
38class TextEncoding;
39
40using UnencodableReplacementArray = std::array<char, 32>;
41
42class TextCodec {
43 WTF_MAKE_NONCOPYABLE(TextCodec); WTF_MAKE_FAST_ALLOCATED;
44public:
45 TextCodec() = default;
46 virtual ~TextCodec() = default;
47
48 virtual String decode(const char*, size_t length, bool flush, bool stopOnError, bool& sawError) = 0;
49 virtual Vector<uint8_t> encode(StringView, UnencodableHandling) = 0;
50
51 // Fills a null-terminated string representation of the given
52 // unencodable character into the given replacement buffer.
53 // The length of the string (not including the null) will be returned.
54 static int getUnencodableReplacement(UChar32, UnencodableHandling, UnencodableReplacementArray&);
55};
56
57using EncodingNameRegistrar = void (*)(const char* alias, const char* name);
58
59using NewTextCodecFunction = WTF::Function<std::unique_ptr<TextCodec>()>;
60using TextCodecRegistrar = void (*)(const char* name, NewTextCodecFunction&&);
61
62} // namespace WebCore
63
64