Source/WebCore/html/LinkRelAttribute.cpp

/*
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 * notice, this list of conditions and the following disclaimer.
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 * in the documentation and/or other materials provided with the
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#include "config.h"
#include "LinkRelAttribute.h"

#include "LinkIconType.h"
#include "RuntimeEnabledFeatures.h"
#include <wtf/text/WTFString.h>

namespace WebCore {

LinkRelAttribute::LinkRelAttribute()
{
}

LinkRelAttribute::LinkRelAttribute(const String& rel)
{
    if (equalLettersIgnoringASCIICase(rel, "stylesheet"))
        isStyleSheet = true;
    else if (equalLettersIgnoringASCIICase(rel, "icon") || equalLettersIgnoringASCIICase(rel, "shortcut icon"))
        iconType = LinkIconType::Favicon;
    else if (equalLettersIgnoringASCIICase(rel, "apple-touch-icon"))
        iconType = LinkIconType::TouchIcon;
    else if (equalLettersIgnoringASCIICase(rel, "apple-touch-icon-precomposed"))
        iconType = LinkIconType::TouchPrecomposedIcon;
    else if (equalLettersIgnoringASCIICase(rel, "dns-prefetch"))
        isDNSPrefetch = true;
    else if (RuntimeEnabledFeatures::sharedFeatures().linkPreloadEnabled() && equalLettersIgnoringASCIICase(rel, "preload"))
        isLinkPreload = true;
    else if (equalLettersIgnoringASCIICase(rel, "alternate stylesheet") || equalLettersIgnoringASCIICase(rel, "stylesheet alternate")) {
        isStyleSheet = true;
        isAlternate = true;
    } else {
        // Tokenize the rel attribute and set bits based on specific keywords that we find.
        String relCopy = rel;
        relCopy.replace('\n', ' ');
        Vector<String> list;
        relCopy.split(' ', list);
        for (auto& word : list) {
            if (equalLettersIgnoringASCIICase(word, "stylesheet"))
                isStyleSheet = true;
            else if (equalLettersIgnoringASCIICase(word, "alternate"))
                isAlternate = true;
            else if (equalLettersIgnoringASCIICase(word, "icon"))
                iconType = LinkIconType::Favicon;
            else if (equalLettersIgnoringASCIICase(word, "apple-touch-icon"))
                iconType = LinkIconType::TouchIcon;
            else if (equalLettersIgnoringASCIICase(word, "apple-touch-icon-precomposed"))
                iconType = LinkIconType::TouchPrecomposedIcon;
#if ENABLE(LINK_PREFETCH)
            else if (equalLettersIgnoringASCIICase(word, "prefetch"))
                isLinkPrefetch = true;
            else if (equalLettersIgnoringASCIICase(word, "subresource"))
                isLinkSubresource = true;
#endif
        }
    }
}

}