Source/WebCore/platform/network/HTTPHeaderMap.cpp

/*
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#include "config.h"
#include "HTTPHeaderMap.h"

#include <utility>
#include <wtf/CrossThreadCopier.h>
#include <wtf/text/StringView.h>

namespace WebCore {

HTTPHeaderMap::HTTPHeaderMap()
{
}

HTTPHeaderMap HTTPHeaderMap::isolatedCopy() const
{
    HTTPHeaderMap map;
    map.m_commonHeaders = crossThreadCopy(m_commonHeaders);
    map.m_uncommonHeaders = crossThreadCopy(m_uncommonHeaders);
    return map;
}

String HTTPHeaderMap::get(const String& name) const
{
    HTTPHeaderName headerName;
    if (findHTTPHeaderName(name, headerName))
        return get(headerName);

    return getUncommonHeader(name);
}

String HTTPHeaderMap::getUncommonHeader(const String& name) const
{
    auto index = m_uncommonHeaders.findIf([&](auto& header) {
        return equalIgnoringASCIICase(header.key, name);
    });
    return index != notFound ? m_uncommonHeaders[index].value : String();
}

#if USE(CF)

void HTTPHeaderMap::set(CFStringRef name, const String& value)
{
    // Fast path: avoid constructing a temporary String in the common header case.
    if (auto* nameCharacters = CFStringGetCStringPtr(name, kCFStringEncodingASCII)) {
        unsigned length = CFStringGetLength(name);
        HTTPHeaderName headerName;
        if (findHTTPHeaderName(StringView(nameCharacters, length), headerName))
            set(headerName, value);
        else
            setUncommonHeader(String(nameCharacters, length), value);

        return;
    }

    set(String(name), value);
}

#endif // USE(CF)

void HTTPHeaderMap::set(const String& name, const String& value)
{
    HTTPHeaderName headerName;
    if (findHTTPHeaderName(name, headerName)) {
        set(headerName, value);
        return;
    }

    setUncommonHeader(name, value);
}

void HTTPHeaderMap::setUncommonHeader(const String& name, const String& value)
{
    auto index = m_uncommonHeaders.findIf([&](auto& header) {
        return equalIgnoringASCIICase(header.key, name);
    });
    if (index == notFound)
        m_uncommonHeaders.append(UncommonHeader { name, value });
    else
        m_uncommonHeaders[index].value = value;
}

void HTTPHeaderMap::add(const String& name, const String& value)
{
    HTTPHeaderName headerName;
    if (findHTTPHeaderName(name, headerName)) {
        add(headerName, value);
        return;
    }
    auto index = m_uncommonHeaders.findIf([&](auto& header) {
        return equalIgnoringASCIICase(header.key, name);
    });
    if (index == notFound)
        m_uncommonHeaders.append(UncommonHeader { name, value });
    else
        m_uncommonHeaders[index].value = makeString(m_uncommonHeaders[index].value, ", ", value);
}

void HTTPHeaderMap::append(const String& name, const String& value)
{
    ASSERT(!contains(name));

    HTTPHeaderName headerName;
    if (findHTTPHeaderName(name, headerName))
        m_commonHeaders.append(CommonHeader { headerName, value });
    else
        m_uncommonHeaders.append(UncommonHeader { name, value });
}

bool HTTPHeaderMap::addIfNotPresent(HTTPHeaderName headerName, const String& value)
{
    if (contains(headerName))
        return false;

    m_commonHeaders.append(CommonHeader { headerName, value });
    return true;
}

bool HTTPHeaderMap::contains(const String& name) const
{
    HTTPHeaderName headerName;
    if (findHTTPHeaderName(name, headerName))
        return contains(headerName);

    return m_uncommonHeaders.findIf([&](auto& header) {
        return equalIgnoringASCIICase(header.key, name);
    }) != notFound;
}

bool HTTPHeaderMap::remove(const String& name)
{
    HTTPHeaderName headerName;
    if (findHTTPHeaderName(name, headerName))
        return remove(headerName);

    return m_uncommonHeaders.removeFirstMatching([&](auto& header) {
        return equalIgnoringASCIICase(header.key, name);
    });
}

String HTTPHeaderMap::get(HTTPHeaderName name) const
{
    auto index = m_commonHeaders.findIf([&](auto& header) {
        return header.key == name;
    });
    return index != notFound ? m_commonHeaders[index].value : String();
}

void HTTPHeaderMap::set(HTTPHeaderName name, const String& value)
{
    auto index = m_commonHeaders.findIf([&](auto& header) {
        return header.key == name;
    });
    if (index == notFound)
        m_commonHeaders.append(CommonHeader { name, value });
    else
        m_commonHeaders[index].value = value;
}

bool HTTPHeaderMap::contains(HTTPHeaderName name) const
{
    return m_commonHeaders.findIf([&](auto& header) {
        return header.key == name;
    }) != notFound;
}

bool HTTPHeaderMap::remove(HTTPHeaderName name)
{
    return m_commonHeaders.removeFirstMatching([&](auto& header) {
        return header.key == name;
    });
}

void HTTPHeaderMap::add(HTTPHeaderName name, const String& value)
{
    auto index = m_commonHeaders.findIf([&](auto& header) {
        return header.key == name;
    });
    if (index != notFound)
        m_commonHeaders[index].value = makeString(m_commonHeaders[index].value, ", ", value);
    else
        m_commonHeaders.append(CommonHeader { name, value });
}

} // namespace WebCore