content: /*
   * Copyright (C) 2013 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 android.content.res;
  
  import android.annotation.NonNull;
  import android.annotation.Nullable;
  import android.annotation.UnsupportedAppUsage;
  import android.text.TextUtils;
  
  import java.util.Arrays;
  import java.util.Objects;
  
  /** @hide */
  public final class ResourcesKey {
      @Nullable
      @UnsupportedAppUsage
      public final String mResDir;
  
      @Nullable
      @UnsupportedAppUsage
      public final String[] mSplitResDirs;
  
      @Nullable
      public final String[] mOverlayDirs;
  
      @Nullable
      public final String[] mLibDirs;
  
      public final int mDisplayId;
  
      @NonNull
      public final Configuration mOverrideConfiguration;
  
      @NonNull
      public final CompatibilityInfo mCompatInfo;
  
      private final int mHash;
  
      @UnsupportedAppUsage
      public ResourcesKey(@Nullable String resDir,
                          @Nullable String[] splitResDirs,
                          @Nullable String[] overlayDirs,
                          @Nullable String[] libDirs,
                          int displayId,
                          @Nullable Configuration overrideConfig,
                          @Nullable CompatibilityInfo compatInfo) {
          mResDir = resDir;
          mSplitResDirs = splitResDirs;
          mOverlayDirs = overlayDirs;
          mLibDirs = libDirs;
          mDisplayId = displayId;
          mOverrideConfiguration = new Configuration(overrideConfig != null
                  ? overrideConfig : Configuration.EMPTY);
          mCompatInfo = compatInfo != null ? compatInfo : CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO;
  
          int hash = 17;
          hash = 31 * hash + Objects.hashCode(mResDir);
          hash = 31 * hash + Arrays.hashCode(mSplitResDirs);
          hash = 31 * hash + Arrays.hashCode(mOverlayDirs);
          hash = 31 * hash + Arrays.hashCode(mLibDirs);
          hash = 31 * hash + mDisplayId;
          hash = 31 * hash + Objects.hashCode(mOverrideConfiguration);
          hash = 31 * hash + Objects.hashCode(mCompatInfo);
          mHash = hash;
      }
  
      public boolean hasOverrideConfiguration() {
          return !Configuration.EMPTY.equals(mOverrideConfiguration);
      }
  
      public boolean isPathReferenced(String path) {
          if (mResDir != null && mResDir.startsWith(path)) {
              return true;
          } else {
              return anyStartsWith(mSplitResDirs, path) || anyStartsWith(mOverlayDirs, path)
                      || anyStartsWith(mLibDirs, path);
          }
      }
  
      private static boolean anyStartsWith(String[] list, String prefix) {
          if (list != null) {
              for (String s : list) {
                  if (s != null && s.startsWith(prefix)) {
                      return true;
                  }
              }
          }
          return false;
      }
  
      @Override
      public int hashCode() {
          return mHash;
      }
  
      @Override
      public boolean equals(Object obj) {
          if (!(obj instanceof ResourcesKey)) {
              return false;
          }
  
          ResourcesKey peer = (ResourcesKey) obj;
          if (mHash != peer.mHash) {
              // If the hashes don't match, the objects can't match.
              return false;
          }
  
          if (!Objects.equals(mResDir, peer.mResDir)) {
              return false;
          }
          if (!Arrays.equals(mSplitResDirs, peer.mSplitResDirs)) {
              return false;
          }
          if (!Arrays.equals(mOverlayDirs, peer.mOverlayDirs)) {
              return false;
          }
          if (!Arrays.equals(mLibDirs, peer.mLibDirs)) {
              return false;
          }
          if (mDisplayId != peer.mDisplayId) {
              return false;
          }
          if (!Objects.equals(mOverrideConfiguration, peer.mOverrideConfiguration)) {
              return false;
          }
          if (!Objects.equals(mCompatInfo, peer.mCompatInfo)) {
              return false;
          }
          return true;
      }
  
      @Override
      public String toString() {
          StringBuilder builder = new StringBuilder().append("ResourcesKey{");
          builder.append(" mHash=").append(Integer.toHexString(mHash));
          builder.append(" mResDir=").append(mResDir);
          builder.append(" mSplitDirs=[");
          if (mSplitResDirs != null) {
              builder.append(TextUtils.join(",", mSplitResDirs));
          }
          builder.append("]");
          builder.append(" mOverlayDirs=[");
          if (mOverlayDirs != null) {
              builder.append(TextUtils.join(",", mOverlayDirs));
          }
          builder.append("]");
          builder.append(" mLibDirs=[");
          if (mLibDirs != null) {
              builder.append(TextUtils.join(",", mLibDirs));
          }
          builder.append("]");
          builder.append(" mDisplayId=").append(mDisplayId);
          builder.append(" mOverrideConfig=").append(Configuration.resourceQualifierString(
                  mOverrideConfiguration));
          builder.append(" mCompatInfo=").append(mCompatInfo);
          builder.append("}");
          return builder.toString();
      }
  }
  