LinkRelAttribute.cpp [plain text]
#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 {
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
}
}
}
bool LinkRelAttribute::isSupported(StringView attribute)
{
static const char* const supportedAttributes[] = {
"alternate", "dns-prefetch", "icon", "stylesheet", "apple-touch-icon", "apple-touch-icon-precomposed",
#if ENABLE(LINK_PREFETCH)
"prefetch", "subresource",
#endif
};
for (auto* supportedAttribute : supportedAttributes) {
if (equalIgnoringASCIICase(attribute, supportedAttribute))
return true;
}
if (RuntimeEnabledFeatures::sharedFeatures().linkPreloadEnabled() && equalIgnoringASCIICase(attribute, "preload"))
return true;
return false;
}
}