text_encoding_registry.cc | Explore in Territory

/*
 * Copyright (C) 2006, 2007, 2011 Apple Inc. All rights reserved.
 * Copyright (C) 2007-2009 Torch Mobile, Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/351564777): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif

#include "third_party/blink/renderer/platform/wtf/text/text_encoding_registry.h"

#include <atomic>
#include <memory>

#include "base/dcheck_is_on.h"
#include "base/feature_list.h"
#include "base/logging.h"
#include "base/synchronization/lock.h"
#include "third_party/blink/public/common/features.h"
#include "third_party/blink/renderer/platform/wtf/hash_map.h"
#include "third_party/blink/renderer/platform/wtf/hash_set.h"
#include "third_party/blink/renderer/platform/wtf/std_lib_extras.h"
#include "third_party/blink/renderer/platform/wtf/text/ascii_ctype.h"
#include "third_party/blink/renderer/platform/wtf/text/case_folding_hash.h"
#include "third_party/blink/renderer/platform/wtf/text/string_view.h"
#include "third_party/blink/renderer/platform/wtf/text/text_codec_cjk.h"
#include "third_party/blink/renderer/platform/wtf/text/text_codec_icu.h"
#include "third_party/blink/renderer/platform/wtf/text/text_codec_latin1.h"
#include "third_party/blink/renderer/platform/wtf/text/text_codec_replacement.h"
#include "third_party/blink/renderer/platform/wtf/text/text_codec_user_defined.h"
#include "third_party/blink/renderer/platform/wtf/text/text_codec_utf16.h"
#include "third_party/blink/renderer/platform/wtf/text/text_codec_utf8.h"
#include "third_party/blink/renderer/platform/wtf/text/text_encoding.h"
#include "third_party/blink/renderer/platform/wtf/wtf.h"

namespace WTF {

const size_t kMaxEncodingNameLength = …;

struct TextCodecFactory { … };

TextEncodingNameMap;
TextCodecMap;

static base::Lock& EncodingRegistryLock() { … }

static TextEncodingNameMap* g_text_encoding_name_map;
static TextCodecMap* g_text_codec_map;

namespace {
static std::atomic_bool g_did_extend_text_codec_maps{ … };

ALWAYS_INLINE bool AtomicDidExtendTextCodecMaps() { … }

ALWAYS_INLINE void AtomicSetDidExtendTextCodecMaps() { … }
}  // namespace

#if !DCHECK_IS_ON()

static inline void CheckExistingName(const char*, const char*) {}

#else

static void CheckExistingName(const char* alias, const char* atomic_name) { … }

#endif

static bool IsUndesiredAlias(const char* alias) { … }

static void AddToTextEncodingNameMap(const char* alias, const char* name) { … }

static void AddToTextCodecMap(const char* name,
                              NewTextCodecFunction function,
                              const void* additional_data) { … }

// Note that this can be called both the main thread and worker threads.
static void BuildBaseTextCodecMaps() { … }

static void ExtendTextCodecMaps() { … }

std::unique_ptr<TextCodec> NewTextCodec(const TextEncoding& encoding) { … }

const char* AtomicCanonicalTextEncodingName(const char* name) { … }

template <typename CharacterType>
const char* AtomicCanonicalTextEncodingName(const CharacterType* characters,
                                            size_t length) { … }

const char* AtomicCanonicalTextEncodingName(const String& alias) { … }

bool NoExtendedTextEncodingNameUsed() { … }

Vector<String> TextEncodingAliasesForTesting() { … }

#ifndef NDEBUG
void DumpTextEncodingNameMap() { … }
#endif

}  // namespace WTF
chromium/third_party/blink/renderer/platform/wtf/text/text_encoding_registry.cc
