content: /*
   * Copyright (C) 2007 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package com.taobao.android.dx.dex.file;
  
  import com.taobao.android.dex.Leb128;
  import com.taobao.android.dx.rop.cst.CstString;
  import com.taobao.android.dx.util.AnnotatedOutput;
  import com.taobao.android.dx.util.ByteArray;
  import com.taobao.android.dx.util.Hex;
  
  /**
   * Representation of string data for a particular string, in a Dalvik file.
   */
  public final class StringDataItem extends OffsettedItem {
      /** {@code non-null;} the string value */
      private final CstString value;
  
      /**
       * Constructs an instance.
       *
       * @param value {@code non-null;} the string value
       */
      public StringDataItem(CstString value) {
          super(1, writeSize(value));
  
          this.value = value;
      }
  
      /**
       * Gets the write size for a given value.
       *
       * @param value {@code non-null;} the string value
       * @return {@code >= 2}; the write size, in bytes
       */
      private static int writeSize(CstString value) {
          int utf16Size = value.getUtf16Size();
  
          // The +1 is for the '\0' termination byte.
          return Leb128.unsignedLeb128Size(utf16Size)
              + value.getUtf8Size() + 1;
      }
  
      /** {@inheritDoc} */
      @Override
      public ItemType itemType() {
          return ItemType.TYPE_STRING_DATA_ITEM;
      }
  
      /** {@inheritDoc} */
      @Override
      public void addContents(DexFile file) {
          // Nothing to do here.
      }
  
      /** {@inheritDoc} */
      @Override
      public void writeTo0(DexFile file, AnnotatedOutput out) {
          ByteArray bytes = value.getBytes();
          int utf16Size = value.getUtf16Size();
  
          if (out.annotates()) {
              out.annotate(Leb128.unsignedLeb128Size(utf16Size),
                      "utf16_size: " + Hex.u4(utf16Size));
              out.annotate(bytes.size() + 1, value.toQuoted());
          }
  
          out.writeUleb128(utf16Size);
          out.write(bytes);
          out.writeByte(0);
      }
  
      /** {@inheritDoc} */
      @Override
      public String toHuman() {
          return value.toQuoted();
      }
  
      /** {@inheritDoc} */
      @Override
      protected int compareTo0(OffsettedItem other) {
          StringDataItem otherData = (StringDataItem) other;
  
          return value.compareTo(otherData.value);
      }
  }
  