tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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txNamespaceMap.cpp (2215B)

      1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* This Source Code Form is subject to the terms of the Mozilla Public
      3 * License, v. 2.0. If a copy of the MPL was not distributed with this
      4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      5 
      6 #include "txNamespaceMap.h"
      7 
      8 #include "nsGkAtoms.h"
      9 #include "txXPathNode.h"
     10 
     11 txNamespaceMap::txNamespaceMap() = default;
     12 
     13 txNamespaceMap::txNamespaceMap(const txNamespaceMap& aOther)
     14    : mPrefixes(aOther.mPrefixes.Clone()),
     15      mNamespaces(aOther.mNamespaces.Clone()) {}
     16 
     17 nsresult txNamespaceMap::mapNamespace(nsAtom* aPrefix,
     18                                      const nsAString& aNamespaceURI) {
     19  nsAtom* prefix = aPrefix == nsGkAtoms::_empty ? nullptr : aPrefix;
     20 
     21  int32_t nsId;
     22  if (prefix && aNamespaceURI.IsEmpty()) {
     23    // Remove the mapping
     24    int32_t index = mPrefixes.IndexOf(prefix);
     25    if (index >= 0) {
     26      mPrefixes.RemoveElementAt(index);
     27      mNamespaces.RemoveElementAt(index);
     28    }
     29 
     30    return NS_OK;
     31  }
     32 
     33  if (aNamespaceURI.IsEmpty()) {
     34    // Set default to empty namespace
     35    nsId = kNameSpaceID_None;
     36  } else {
     37    nsId = txNamespaceManager::getNamespaceID(aNamespaceURI);
     38    NS_ENSURE_FALSE(nsId == kNameSpaceID_Unknown, NS_ERROR_FAILURE);
     39  }
     40 
     41  // Check if the mapping already exists
     42  int32_t index = mPrefixes.IndexOf(prefix);
     43  if (index >= 0) {
     44    mNamespaces.ElementAt(index) = nsId;
     45 
     46    return NS_OK;
     47  }
     48 
     49  // New mapping
     50  mPrefixes.AppendElement(prefix);
     51  mNamespaces.AppendElement(nsId);
     52 
     53  return NS_OK;
     54 }
     55 
     56 int32_t txNamespaceMap::lookupNamespace(nsAtom* aPrefix) {
     57  if (aPrefix == nsGkAtoms::xml) {
     58    return kNameSpaceID_XML;
     59  }
     60 
     61  nsAtom* prefix = aPrefix == nsGkAtoms::_empty ? 0 : aPrefix;
     62 
     63  int32_t index = mPrefixes.IndexOf(prefix);
     64  if (index >= 0) {
     65    return mNamespaces.SafeElementAt(index, kNameSpaceID_Unknown);
     66  }
     67 
     68  if (!prefix) {
     69    return kNameSpaceID_None;
     70  }
     71 
     72  return kNameSpaceID_Unknown;
     73 }
     74 
     75 int32_t txNamespaceMap::lookupNamespaceWithDefault(const nsAString& aPrefix) {
     76  RefPtr<nsAtom> prefix = NS_Atomize(aPrefix);
     77  if (prefix != nsGkAtoms::_poundDefault) {
     78    return lookupNamespace(prefix);
     79  }
     80 
     81  return lookupNamespace(nullptr);
     82 }