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      1 /*
      2  * Copyright (C) 2016 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #include "link/Linkers.h"
     18 
     19 #include <algorithm>
     20 
     21 #include "ResourceTable.h"
     22 
     23 namespace aapt {
     24 
     25 namespace {
     26 
     27 // Visits each xml Node, removing URI references and nested namespaces.
     28 class XmlVisitor : public xml::Visitor {
     29  public:
     30   explicit XmlVisitor(bool keep_uris) : keep_uris_(keep_uris) {}
     31 
     32   void Visit(xml::Element* el) override {
     33     el->namespace_decls.clear();
     34 
     35     if (!keep_uris_) {
     36       for (xml::Attribute& attr : el->attributes) {
     37         attr.namespace_uri.clear();
     38       }
     39       el->namespace_uri.clear();
     40     }
     41     xml::Visitor::Visit(el);
     42   }
     43 
     44  private:
     45   DISALLOW_COPY_AND_ASSIGN(XmlVisitor);
     46 
     47   bool keep_uris_;
     48 };
     49 
     50 }  // namespace
     51 
     52 bool XmlNamespaceRemover::Consume(IAaptContext* context, xml::XmlResource* resource) {
     53   if (!resource->root) {
     54     return false;
     55   }
     56 
     57   XmlVisitor visitor(keep_uris_);
     58   resource->root->Accept(&visitor);
     59   return true;
     60 }
     61 
     62 }  // namespace aapt
     63