124 lines
3.4 KiB
C++
124 lines
3.4 KiB
C++
/*
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* Copyright 2017 The Chromium Authors. All rights reserved.
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* Copyright (C) 2018 Akamai Technologies Inc. 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
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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 THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (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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#include "config.h"
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#include "HeaderFieldTokenizer.h"
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#include "HTTPHeaderField.h"
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#include <wtf/text/StringBuilder.h>
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namespace WebCore {
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HeaderFieldTokenizer::HeaderFieldTokenizer(const String& headerField)
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: m_input(headerField)
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{
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skipSpaces();
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}
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bool HeaderFieldTokenizer::consume(UChar c)
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{
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ASSERT(c != ' ' && c != '\t');
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if (isConsumed() || m_input[m_index] != c)
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return false;
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++m_index;
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skipSpaces();
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return true;
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}
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String HeaderFieldTokenizer::consumeQuotedString()
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{
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StringBuilder builder;
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ASSERT(m_input[m_index] == '"');
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++m_index;
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while (!isConsumed()) {
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if (m_input[m_index] == '"') {
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String output = builder.toString();
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++m_index;
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skipSpaces();
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return output;
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}
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if (m_input[m_index] == '\\') {
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++m_index;
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if (isConsumed())
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return String();
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}
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builder.append(m_input[m_index]);
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++m_index;
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}
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return String();
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}
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String HeaderFieldTokenizer::consumeToken()
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{
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auto start = m_index;
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while (!isConsumed() && RFC7230::isTokenCharacter(m_input[m_index]))
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++m_index;
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if (start == m_index)
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return String();
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String output = m_input.substring(start, m_index - start);
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skipSpaces();
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return output;
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}
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String HeaderFieldTokenizer::consumeTokenOrQuotedString()
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{
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if (isConsumed())
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return String();
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if (m_input[m_index] == '"')
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return consumeQuotedString();
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return consumeToken();
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}
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void HeaderFieldTokenizer::skipSpaces()
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{
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while (!isConsumed() && RFC7230::isWhitespace(m_input[m_index]))
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++m_index;
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}
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void HeaderFieldTokenizer::consumeBeforeAnyCharMatch(const Vector<UChar>& chars)
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{
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ASSERT(chars.size() > 0U && chars.size() < 3U);
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while (!isConsumed()) {
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for (const auto& c : chars) {
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if (c == m_input[m_index])
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return;
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}
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++m_index;
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}
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}
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} // namespace WebCore
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