import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

dom/base/nsXMLNameSpaceMap.cpp

@@ -0,0 +1,110 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+/*
+ * A class for keeping track of prefix-to-namespace-id mappings
+ */
+
+#include "nsXMLNameSpaceMap.h"
+#include "nsContentUtils.h"
+#include "nsGkAtoms.h"
+#include "nsNameSpaceManager.h"
+#include "mozilla/dom/NameSpaceConstants.h"
+
+template <>
+class nsDefaultComparator <nsNameSpaceEntry, nsIAtom*> {
+  public:
+    bool Equals(const nsNameSpaceEntry& aEntry, nsIAtom* const& aPrefix) const {
+      return aEntry.prefix == aPrefix;
+    }
+};
+
+template <>
+class nsDefaultComparator <nsNameSpaceEntry, int32_t> {
+  public:
+    bool Equals(const nsNameSpaceEntry& aEntry, const int32_t& aNameSpace) const {
+      return aEntry.nameSpaceID == aNameSpace;
+    }
+};
+
+
+/* static */ nsXMLNameSpaceMap*
+nsXMLNameSpaceMap::Create(bool aForXML)
+{
+  nsXMLNameSpaceMap *map = new nsXMLNameSpaceMap();
+  NS_ENSURE_TRUE(map, nullptr);
+
+  if (aForXML) {
+    nsresult rv1 = map->AddPrefix(nsGkAtoms::xmlns,
+                                  kNameSpaceID_XMLNS);
+    nsresult rv2 = map->AddPrefix(nsGkAtoms::xml, kNameSpaceID_XML);
+
+    if (NS_FAILED(rv1) || NS_FAILED(rv2)) {
+      delete map;
+      map = nullptr;
+    }
+  }
+
+  return map;
+}
+
+nsXMLNameSpaceMap::nsXMLNameSpaceMap()
+  : mNameSpaces(4)
+{
+}
+
+nsresult
+nsXMLNameSpaceMap::AddPrefix(nsIAtom *aPrefix, int32_t aNameSpaceID)
+{
+  if (!mNameSpaces.Contains(aPrefix) && !mNameSpaces.AppendElement(aPrefix)) {
+    return NS_ERROR_OUT_OF_MEMORY;
+  }
+  mNameSpaces[mNameSpaces.IndexOf(aPrefix)].nameSpaceID = aNameSpaceID;
+  return NS_OK;
+}
+
+nsresult
+nsXMLNameSpaceMap::AddPrefix(nsIAtom *aPrefix, nsString &aURI)
+{
+  int32_t id;
+  nsresult rv = nsContentUtils::NameSpaceManager()->RegisterNameSpace(aURI,
+                                                                      id);
+
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  return AddPrefix(aPrefix, id);
+}
+
+int32_t
+nsXMLNameSpaceMap::FindNameSpaceID(nsIAtom *aPrefix) const
+{
+  size_t index = mNameSpaces.IndexOf(aPrefix);
+  if (index != mNameSpaces.NoIndex) {
+    return mNameSpaces[index].nameSpaceID;
+  }
+
+  // The default mapping for no prefix is no namespace.  If a non-null prefix
+  // was specified and we didn't find it, we return an error.
+
+  return aPrefix ? kNameSpaceID_Unknown : kNameSpaceID_None;
+}
+
+nsIAtom*
+nsXMLNameSpaceMap::FindPrefix(int32_t aNameSpaceID) const
+{
+  size_t index = mNameSpaces.IndexOf(aNameSpaceID);
+  if (index != mNameSpaces.NoIndex) {
+    return mNameSpaces[index].prefix;
+  }
+
+  return nullptr;
+}
+
+void
+nsXMLNameSpaceMap::Clear()
+{
+  mNameSpaces.Clear();
+}