/*
 * Copyright (C) 2011 Google Inc. All rights reserved.
 * Copyright (C) 2012 Intel Corporation. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * 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.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "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 THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef ParsedContentType_h
#define ParsedContentType_h

#include <wtf/HashMap.h>
#include <wtf/text/StringHash.h>

namespace WebCore {

// <index, length>
typedef std::pair<unsigned, unsigned> SubstringRange;
bool isValidContentType(const String&);

// FIXME: add support for comments.
class ParsedContentType {
public:
    explicit ParsedContentType(const String&);

    String mimeType() const { return m_mimeType; }
    String charset() const;

    // Note that in the case of multiple values for the same name, the last value is returned.
    String parameterValueForName(const String&) const;
    size_t parameterCount() const;

private:
    template<class ReceiverType>
    friend bool parseContentType(const String&, ReceiverType&);
    void setContentType(const SubstringRange&);
    void setContentTypeParameter(const SubstringRange&, const SubstringRange&);

    typedef HashMap<String, String> KeyValuePairs;
    String m_contentType;
    KeyValuePairs m_parameters;
    String m_mimeType;
};

inline String ParsedContentType::charset() const
{
    return parameterValueForName("charset");
}

inline String ParsedContentType::parameterValueForName(const String& name) const
{
    return m_parameters.get(name);
}

inline size_t ParsedContentType::parameterCount() const
{
    return m_parameters.size();
}

}

#endif
