Home | History | Annotate | Download | only in ddmlib 
      1 /*
      2  * Copyright (C) 2007 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 package com.android.ddmlib;
     18 
     19 import java.util.regex.Matcher;
     20 import java.util.regex.Pattern;
     21 
     22 /**
     23  * A receiver able to parse the result of the execution of
     24  * {@link #GETPROP_COMMAND} on a device.
     25  */
     26 final class GetPropReceiver extends MultiLineReceiver {
     27     final static String GETPROP_COMMAND = "getprop"; //$NON-NLS-1$
     28 
     29     private final static Pattern GETPROP_PATTERN = Pattern.compile("^\\[([^]]+)\\]\\:\\s*\\[(.*)\\]$"); //$NON-NLS-1$
     30 
     31     /** indicates if we need to read the first */
     32     private Device mDevice = null;
     33 
     34     /**
     35      * Creates the receiver with the device the receiver will modify.
     36      * @param device The device to modify
     37      */
     38     public GetPropReceiver(Device device) {
     39         mDevice = device;
     40     }
     41 
     42     @Override
     43     public void processNewLines(String[] lines) {
     44         // We receive an array of lines. We're expecting
     45         // to have the build info in the first line, and the build
     46         // date in the 2nd line. There seems to be an empty line
     47         // after all that.
     48 
     49         for (String line : lines) {
     50             if (line.length() == 0 || line.startsWith("#")) {
     51                 continue;
     52             }
     53 
     54             Matcher m = GETPROP_PATTERN.matcher(line);
     55             if (m.matches()) {
     56                 String label = m.group(1);
     57                 String value = m.group(2);
     58 
     59                 if (label.length() > 0) {
     60                     mDevice.addProperty(label, value);
     61                 }
     62             }
     63         }
     64     }
     65 
     66     public boolean isCancelled() {
     67         return false;
     68     }
     69 
     70     @Override
     71     public void done() {
     72         mDevice.update(Device.CHANGE_BUILD_INFO);
     73     }
     74 }
     75