UpdateStrings.java

/*
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * See the NOTICE file distributed with this work for additional
 * information regarding copyright ownership.
 * 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 io.appium.android.bootstrap.handler;

import io.appium.android.bootstrap.AndroidCommand;
import io.appium.android.bootstrap.AndroidCommandResult;
import io.appium.android.bootstrap.CommandHandler;
import io.appium.android.bootstrap.Logger;
import org.json.JSONObject;

import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;

/**
 * This handler is used to update the apk strings.
 *
 */
public class UpdateStrings extends CommandHandler {

  /*
   * @param command The {@link AndroidCommand} used for this handler.
   *
   * @return {@link AndroidCommandResult}
   *
   * @see io.appium.android.bootstrap.CommandHandler#execute(io.appium.android.
   * bootstrap.AndroidCommand)
   */
  @Override
  public AndroidCommandResult execute(final AndroidCommand command) {
    if (!loadStringsJson()) {
      return getErrorResult("Unable to load json file and update strings.");
    }
    return getSuccessResult(true);
  }

  public static boolean loadStringsJson() {
    Logger.debug("Loading json...");
    try {
      String filePath = "/data/local/tmp/strings.json";
      final File jsonFile = new File(filePath);
      // json will not exist for apks that are only on device
      // because the node server can't extract the json from the apk.
      if (!jsonFile.exists()) {
        return false;
      }
      final DataInputStream dataInput = new DataInputStream(
          new FileInputStream(jsonFile));
      final byte[] jsonBytes = new byte[(int) jsonFile.length()];
      dataInput.readFully(jsonBytes);
      // this closes FileInputStream
      dataInput.close();
      final String jsonString = new String(jsonBytes, "UTF-8");
      Find.apkStrings = new JSONObject(jsonString);
      Logger.debug("json loading complete.");
    } catch (final Exception e) {
      Logger.error("Error loading json: " + e.getMessage());
      return false;
    }
    return true;
  }
}