1 files changed, 113 insertions, 0 deletions
diff --git a/gfx/thebes/gfxFontSrcURI.cpp b/gfx/thebes/gfxFontSrcURI.cpp
new file mode 100644
index 0000000000..3153d2abce
--- /dev/null
+++ b/gfx/thebes/gfxFontSrcURI.cpp
@@ -0,0 +1,113 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "gfxFontSrcURI.h"
+
+#include "mozilla/ServoStyleSet.h"
+#include "nsIProtocolHandler.h"
+#include "nsProxyRelease.h"
+#include "nsNetUtil.h"
+#include "nsSimpleURI.h"
+#include "nsURIHashKey.h"
+
+static bool HasFlag(nsIURI* aURI, uint32_t aFlag) {
+  nsresult rv;
+  bool value = false;
+  rv = NS_URIChainHasFlags(aURI, aFlag, &value);
+  return NS_SUCCEEDED(rv) && value;
+}
+
+gfxFontSrcURI::gfxFontSrcURI(nsIURI* aURI) : mURI(aURI) {
+  MOZ_ASSERT(aURI);
+
+  // If we have a data: URI, we know that it is backed by an nsSimpleURI,
+  // and that we don't need to serialize it ahead of time.
+  nsCString scheme;
+  mURI->GetScheme(scheme);
+
+  if (scheme.EqualsLiteral("data")) {
+    // We know that nsSimpleURI::From returns us a pointer to the same object,
+    // and we hold a strong reference to the object in mURI, so no need to
+    // hold it strongly here as well.  (And we'd have to
+    // NS_ReleaseOnMainThread it in our destructor anyway.)
+    RefPtr<mozilla::net::nsSimpleURI> simpleURI =
+        mozilla::net::nsSimpleURI::From(aURI);
+    mSimpleURI = simpleURI;
+
+    NS_ASSERTION(mSimpleURI,
+                 "Why aren't our data: URLs backed by nsSimpleURI?");
+  } else {
+    mSimpleURI = nullptr;
+  }
+
+  if (!mSimpleURI) {
+    mURI->GetSpec(mSpec);
+  }
+
+  mHash = nsURIHashKey::HashKey(mURI);
+}
+
+gfxFontSrcURI::~gfxFontSrcURI() = default;
+
+void gfxFontSrcURI::EnsureInitialized() {
+  MOZ_ASSERT(NS_IsMainThread() || mozilla::ServoStyleSet::IsInServoTraversal());
+
+  if (mInitialized) {
+    return;
+  }
+
+  mInheritsSecurityContext =
+      HasFlag(mURI, nsIProtocolHandler::URI_INHERITS_SECURITY_CONTEXT);
+  mSyncLoadIsOK = HasFlag(mURI, nsIProtocolHandler::URI_SYNC_LOAD_IS_OK);
+  mInitialized = true;
+}
+
+bool gfxFontSrcURI::Equals(gfxFontSrcURI* aOther) {
+  if (mSimpleURI) {
+    if (aOther->mSimpleURI) {
+      return mSimpleURI->Equals(aOther->mSimpleURI);
+    }
+
+    // The two URIs are probably different.  Do a quick check on the
+    // schemes before deciding to serialize mSimpleURI (which might be
+    // quite large).
+    {
+      nsCString thisScheme;
+      mSimpleURI->GetScheme(thisScheme);
+
+      nsCString otherScheme;
+      if (!StringBeginsWith(aOther->mSpec, thisScheme)) {
+        return false;
+      }
+    }
+
+    nsCString thisSpec;
+    mSimpleURI->GetSpec(thisSpec);
+    return thisSpec == aOther->mSpec;
+  }
+
+  if (aOther->mSimpleURI) {
+    return aOther->Equals(this);
+  }
+
+  return mSpec == aOther->mSpec;
+}
+
+nsresult gfxFontSrcURI::GetSpec(nsACString& aResult) {
+  if (mSimpleURI) {
+    return mSimpleURI->GetSpec(aResult);
+  }
+
+  aResult = mSpec;
+  return NS_OK;
+}
+
+nsCString gfxFontSrcURI::GetSpecOrDefault() {
+  if (mSimpleURI) {
+    return mSimpleURI->GetSpecOrDefault();
+  }
+
+  return mSpec;
+}