181 lines
5.4 KiB
C++
181 lines
5.4 KiB
C++
/*
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* Copyright (C) 2015 Igalia S.L.
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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
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "KeyedDecoderGlib.h"
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#include <wtf/text/CString.h>
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namespace WebCore {
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std::unique_ptr<KeyedDecoder> KeyedDecoder::decoder(const uint8_t* data, size_t size)
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{
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return makeUnique<KeyedDecoderGlib>(data, size);
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}
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KeyedDecoderGlib::KeyedDecoderGlib(const uint8_t* data, size_t size)
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{
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GRefPtr<GBytes> bytes = adoptGRef(g_bytes_new(data, size));
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GRefPtr<GVariant> variant = g_variant_new_from_bytes(G_VARIANT_TYPE("a{sv}"), bytes.get(), TRUE);
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m_dictionaryStack.append(dictionaryFromGVariant(variant.get()));
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}
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KeyedDecoderGlib::~KeyedDecoderGlib()
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{
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ASSERT(m_dictionaryStack.size() == 1);
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ASSERT(m_arrayStack.isEmpty());
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ASSERT(m_arrayIndexStack.isEmpty());
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}
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HashMap<String, GRefPtr<GVariant>> KeyedDecoderGlib::dictionaryFromGVariant(GVariant* variant)
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{
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HashMap<String, GRefPtr<GVariant>> dictionary;
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GVariantIter iter;
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g_variant_iter_init(&iter, variant);
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const char* key;
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GVariant* value;
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while (g_variant_iter_loop(&iter, "{&sv}", &key, &value)) {
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if (key)
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dictionary.set(String::fromUTF8(key), value);
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}
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return dictionary;
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}
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bool KeyedDecoderGlib::decodeBytes(const String& key, const uint8_t*& bytes, size_t& size)
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{
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GRefPtr<GVariant> value = m_dictionaryStack.last().get(key);
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if (!value)
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return false;
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size = g_variant_get_size(value.get());
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bytes = static_cast<const uint8_t*>(g_variant_get_data(value.get()));
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return true;
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}
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template<typename T, typename F>
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bool KeyedDecoderGlib::decodeSimpleValue(const String& key, T& result, F getFunction)
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{
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GRefPtr<GVariant> value = m_dictionaryStack.last().get(key);
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if (!value)
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return false;
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result = getFunction(value.get());
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return true;
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}
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bool KeyedDecoderGlib::decodeBool(const String& key, bool& result)
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{
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return decodeSimpleValue(key, result, g_variant_get_boolean);
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}
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bool KeyedDecoderGlib::decodeUInt32(const String& key, uint32_t& result)
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{
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return decodeSimpleValue(key, result, g_variant_get_uint32);
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}
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bool KeyedDecoderGlib::decodeUInt64(const String& key, uint64_t& result)
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{
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return decodeSimpleValue(key, result, g_variant_get_uint64);
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}
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bool KeyedDecoderGlib::decodeInt32(const String& key, int32_t& result)
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{
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return decodeSimpleValue(key, result, g_variant_get_int32);
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}
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bool KeyedDecoderGlib::decodeInt64(const String& key, int64_t& result)
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{
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return decodeSimpleValue(key, result, g_variant_get_int64);
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}
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bool KeyedDecoderGlib::decodeFloat(const String& key, float& result)
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{
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return decodeSimpleValue(key, result, g_variant_get_double);
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}
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bool KeyedDecoderGlib::decodeDouble(const String& key, double& result)
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{
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return decodeSimpleValue(key, result, g_variant_get_double);
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}
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bool KeyedDecoderGlib::decodeString(const String& key, String& result)
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{
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GRefPtr<GVariant> value = m_dictionaryStack.last().get(key);
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if (!value)
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return false;
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result = String::fromUTF8(g_variant_get_string(value.get(), nullptr));
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return true;
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}
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bool KeyedDecoderGlib::beginObject(const String& key)
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{
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GRefPtr<GVariant> value = m_dictionaryStack.last().get(key);
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if (!value)
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return false;
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m_dictionaryStack.append(dictionaryFromGVariant(value.get()));
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return true;
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}
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void KeyedDecoderGlib::endObject()
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{
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m_dictionaryStack.removeLast();
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}
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bool KeyedDecoderGlib::beginArray(const String& key)
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{
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GRefPtr<GVariant> value = m_dictionaryStack.last().get(key);
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if (!value)
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return false;
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m_arrayStack.append(value.get());
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m_arrayIndexStack.append(0);
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return true;
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}
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bool KeyedDecoderGlib::beginArrayElement()
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{
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if (m_arrayIndexStack.last() >= g_variant_n_children(m_arrayStack.last()))
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return false;
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GRefPtr<GVariant> variant = adoptGRef(g_variant_get_child_value(m_arrayStack.last(), m_arrayIndexStack.last()++));
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m_dictionaryStack.append(dictionaryFromGVariant(variant.get()));
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return true;
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}
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void KeyedDecoderGlib::endArrayElement()
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{
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m_dictionaryStack.removeLast();
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}
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void KeyedDecoderGlib::endArray()
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{
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m_arrayStack.removeLast();
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m_arrayIndexStack.removeLast();
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}
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} // namespace WebCore
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