app/src/main/java/net/ktnx/mobileledger/RetrieveAccountsTask.java

   1 package net.ktnx.mobileledger;
   2
   3 import android.content.SharedPreferences;
   4 import android.database.sqlite.SQLiteDatabase;
   5 import android.util.Log;
   6
   7 import java.io.BufferedReader;
   8 import java.io.IOException;
   9 import java.io.InputStream;
  10 import java.io.InputStreamReader;
  11 import java.net.HttpURLConnection;
  12 import java.net.MalformedURLException;
  13 import java.net.URLDecoder;
  14 import java.util.regex.Matcher;
  15 import java.util.regex.Pattern;
  16
  17 abstract public class RetrieveAccountsTask extends android.os.AsyncTask<SQLiteDatabase, Integer, Void> {
  18     int error;
  19
  20     private SharedPreferences pref;
  21     public void setPref(SharedPreferences pref) {
  22         this.pref = pref;
  23     }
  24     public RetrieveAccountsTask() {
  25         error = 0;
  26     }
  27
  28     protected Void doInBackground(SQLiteDatabase... sqLiteDatabases) {
  29         final SQLiteDatabase db = sqLiteDatabases[0];
  30         try {
  31             HttpURLConnection http = NetworkUtil.prepare_connection( pref, "add");
  32             http.setAllowUserInteraction(false);
  33             http.setRequestProperty("Accept-Charset", "UTF-8");
  34             publishProgress(0);
  35             InputStream resp = http.getInputStream();
  36             try {
  37                 Log.d("update_accounts", String.valueOf(http.getResponseCode()));
  38                 if (http.getResponseCode() != 200) {
  39                     throw new IOException(String.valueOf(R.string.err_http_error));
  40                 }
  41                 else {
  42                     db.beginTransaction();
  43                     db.execSQL("delete from account_values;");
  44                     db.execSQL("delete from accounts;");
  45
  46                     try {
  47                         String line;
  48                         String last_account_name = null;
  49                         BufferedReader buf = new BufferedReader(new InputStreamReader(resp, "UTF-8"));
  50                         // %3A is '='
  51                         Pattern re = Pattern.compile("/register\\?q=inacct%3A([a-zA-Z0-9%]+)\"");
  52                         Pattern value_re = Pattern.compile("<span class=\"[^\"]*\\bamount\\b[^\"]*\">\\s*([-+]?[\\d.,]+)(?:\\s+(\\S+))?</span>");
  53                         Pattern tr_re = Pattern.compile("</tr>");
  54                         int count = 0;
  55                         while ((line = buf.readLine()) != null) {
  56
  57                             Matcher m = re.matcher(line);
  58                             if (m.find()) {
  59                                 String acct_encoded = m.group(1);
  60                                 String acct_name = URLDecoder.decode(acct_encoded, "UTF-8");
  61                                 acct_name = acct_name.replace("\"", "");
  62                                 Log.d("account-parser", acct_name);
  63
  64                                 db.execSQL("insert into accounts(name) values(?)", new Object[]{acct_name} );
  65                                 publishProgress(++count);
  66
  67                                 last_account_name = acct_name;
  68
  69                                 continue;
  70                             }
  71
  72                             Matcher tr_m = tr_re.matcher(line);
  73                             if (tr_m.find()) {
  74                                 last_account_name = null;
  75                                 continue;
  76                             }
  77
  78                             if (last_account_name == null) continue;
  79
  80                             m = value_re.matcher(line);
  81                             while (m.find()) {
  82                                 String value = m.group(1);
  83                                 String currency = m.group(2);
  84                                 if(currency == null) currency="";
  85                                 value = value.replace(',', '.');
  86                                 Log.d("db", "curr="+currency+", value="+value);
  87                                 db.execSQL("insert into account_values(account, currency, value) values(?, ?, ?);",
  88                                         new Object[]{last_account_name, currency, Float.valueOf(value)});
  89                             }
  90                         }
  91
  92                         db.setTransactionSuccessful();
  93                     }
  94                     finally {
  95                         db.endTransaction();
  96                     }
  97
  98                 }
  99             }
 100             finally {
 101                 resp.close();
 102             }
 103         } catch (MalformedURLException e) {
 104             error = R.string.err_bad_backend_url;
 105             e.printStackTrace();
 106         } catch (IOException e) {
 107             error = R.string.err_net_io_error;
 108             e.printStackTrace();
 109         }
 110         catch (Exception e) {
 111             error = R.string.err_net_error;
 112             e.printStackTrace();
 113         }
 114
 115         return null;
 116     }
 117
 118     abstract protected void onProgressUpdate(Integer... values);
 119
 120     abstract protected void onPostExecute(Void result);
 121 }