git.gag.com Git - fw/altos/blob - altoslib/AltosUnitInfo.java

   1 /*
   2  * Copyright © 2018 Keith Packard <keithp@keithp.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * General Public License for more details.
  13  */
  14
  15 package org.altusmetrum.altoslib_13;
  16
  17 import java.io.*;
  18 import java.lang.*;
  19 import java.util.*;
  20 import java.util.concurrent.*;
  21 import java.net.*;
  22 import java.text.*;
  23
  24 public class AltosUnitInfo extends Thread {
  25         int                     sn;
  26         int                     rfcal;
  27         AltosUnitInfoListener   listener;
  28         String                  json_string;
  29
  30         public int sn() {
  31                 return sn;
  32         }
  33
  34         public int rfcal() {
  35                 return rfcal;
  36         }
  37
  38         void add(String line) {
  39                 if (json_string == null) {
  40                         json_string = line;
  41                 } else {
  42                         json_string = json_string + "\n" + line;
  43                 }
  44         }
  45
  46         void notify_complete() {
  47                 rfcal = AltosLib.MISSING;
  48
  49                 if (json_string != null) {
  50                         System.out.printf("json_string: %s\n", json_string);
  51                         AltosJson json = AltosJson.fromString(json_string);
  52                         System.out.printf("json: %s\n", json);
  53                         String rfcal_string = null;
  54                         try {
  55                                 AltosJson unitinfo = json.get("unitinfo");
  56                                 rfcal_string = unitinfo.get_string("rfcal", null);
  57                                 if (rfcal_string != null)
  58                                         rfcal = Integer.parseInt(rfcal_string);
  59                         } catch (NumberFormatException ne) {
  60                                 System.out.printf("mal-formed integer %s\n", rfcal_string);
  61                         } catch (IllegalArgumentException ie) {
  62                                 System.out.printf("mal-formed json\n");
  63                         }
  64                 }
  65                 listener.notify_unit_info(this);
  66         }
  67
  68         public void run() {
  69                 try {
  70                         String  format;
  71
  72                         format = System.getenv(AltosLib.unit_info_env);
  73                         if (format == null)
  74                                 format = AltosLib.unit_info_url;
  75
  76                         String path = String.format(format, sn);
  77
  78                         URL url = new URL(path);
  79
  80                         System.out.printf("URL: %s\n", path);
  81
  82                         URLConnection uc = url.openConnection();
  83
  84                         InputStreamReader in_stream = new InputStreamReader(uc.getInputStream(), AltosLib.unicode_set);
  85                         BufferedReader in = new BufferedReader(in_stream);
  86
  87                         for (;;) {
  88                                 String line = in.readLine();
  89                                 if (line == null)
  90                                         break;
  91                                 add(line);
  92                         }
  93                 } catch (Exception e) {
  94                         System.out.printf("file exception %s\n", e.toString());
  95                 } finally {
  96                         notify_complete();
  97                 }
  98         }
  99
 100         public AltosUnitInfo(int sn, AltosUnitInfoListener listener) {
 101                 this.listener = listener;
 102                 this.sn = sn;
 103                 this.rfcal = AltosLib.MISSING;
 104                 start();
 105         }
 106 }