content: /*
   * Copyright 2010 ZXing authors
   *
   * 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.ailiwean.core.zxing.core.client.result;
  
  
  import com.ailiwean.core.zxing.core.Result;
  
  /**
   * <p>Parses a WIFI configuration string. Strings will be of the form:</p>
   *
   * <p>{@code WIFI:T:[network type];S:[network SSID];P:[network password];H:[hidden?];;}</p>
   *
   * <p>For WPA2 enterprise (EAP), strings will be of the form:</p>
   *
   * <p>{@code WIFI:T:WPA2-EAP;S:[network SSID];H:[hidden?];E:[EAP method];PH2:[Phase 2 method];A:[anonymous identity];I:[username];P:[password];;}</p>
   *
   * <p>"EAP method" can e.g. be "TTLS" or "PWD" or one of the other fields in <a href="https://developer.android.com/reference/android/net/wifi/WifiEnterpriseConfig.Eap.html">WifiEnterpriseConfig.Eap</a> and "Phase 2 method" can e.g. be "MSCHAPV2" or any of the other fields in <a href="https://developer.android.com/reference/android/net/wifi/WifiEnterpriseConfig.Phase2.html">WifiEnterpriseConfig.Phase2</a></p>
   *
   * <p>The fields can appear in any order. Only "S:" is required.</p>
   *
   * @author Vikram Aggarwal
   * @author Sean Owen
   * @author Steffen Kieß
   */
  public final class WifiResultParser extends ResultParser {
  
    @Override
    public WifiParsedResult parse(Result result) {
      String rawText = getMassagedText(result);
      if (!rawText.startsWith("WIFI:")) {
        return null;
      }
      rawText = rawText.substring("WIFI:".length());
      String ssid = matchSinglePrefixedField("S:", rawText, ';', false);
      if (ssid == null || ssid.isEmpty()) {
        return null;
      }
      String pass = matchSinglePrefixedField("P:", rawText, ';', false);
      String type = matchSinglePrefixedField("T:", rawText, ';', false);
      if (type == null) {
        type = "nopass";
      }
  
      // Unfortunately, in the past, H: was not just used for boolean 'hidden', but 'phase 2 method'.
      // To try to retain backwards compatibility, we set one or the other based on whether the string
      // is 'true' or 'false':
      boolean hidden = false;
      String phase2Method = matchSinglePrefixedField("PH2:", rawText, ';', false);
      String hValue = matchSinglePrefixedField("H:", rawText, ';', false);
      if (hValue != null) {
        // If PH2 was specified separately, or if the value is clearly boolean, interpret it as 'hidden'
        if (phase2Method != null || "true".equalsIgnoreCase(hValue) || "false".equalsIgnoreCase(hValue)) {
          hidden = Boolean.parseBoolean(hValue);
        } else {
          phase2Method = hValue;
        }
      }
  
      String identity = matchSinglePrefixedField("I:", rawText, ';', false);
      String anonymousIdentity = matchSinglePrefixedField("A:", rawText, ';', false);
      String eapMethod = matchSinglePrefixedField("E:", rawText, ';', false);
  
      return new WifiParsedResult(type, ssid, pass, hidden, identity, anonymousIdentity, eapMethod, phase2Method);
    }
  }
  