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
  44                     try {
  45                         db.execSQL("update account_values set keep=0;");
  46                         db.execSQL("update accounts set keep=0;");
  47
  48                         String line;
  49                         String last_account_name = null;
  50                         BufferedReader buf = new BufferedReader(new InputStreamReader(resp, "UTF-8"));
  51                         // %3A is '='
  52                         Pattern re = Pattern.compile("/register\\?q=inacct%3A([a-zA-Z0-9%]+)\"");
  53                         Pattern value_re = Pattern.compile("<span class=\"[^\"]*\\bamount\\b[^\"]*\">\\s*([-+]?[\\d.,]+)(?:\\s+(\\S+))?</span>");
  54                         Pattern tr_re = Pattern.compile("</tr>");
  55                         int count = 0;
  56                         while ((line = buf.readLine()) != null) {
  57
  58                             Matcher m = re.matcher(line);
  59                             if (m.find()) {
  60                                 String acct_encoded = m.group(1);
  61                                 String acct_name = URLDecoder.decode(acct_encoded, "UTF-8");
  62                                 acct_name = acct_name.replace("\"", "");
  63                                 Log.d("account-parser", acct_name);
  64
  65                                 db.execSQL("insert into accounts(name) values(?)", new Object[]{acct_name} );
  66                                 publishProgress(++count);
  67
  68                                 last_account_name = acct_name;
  69
  70                                 continue;
  71                             }
  72
  73                             Matcher tr_m = tr_re.matcher(line);
  74                             if (tr_m.find()) {
  75                                 last_account_name = null;
  76                                 continue;
  77                             }
  78
  79                             if (last_account_name == null) continue;
  80
  81                             m = value_re.matcher(line);
  82                             while (m.find()) {
  83                                 String value = m.group(1);
  84                                 String currency = m.group(2);
  85                                 if(currency == null) currency="";
  86                                 value = value.replace(',', '.');
  87                                 Log.d("db", "curr="+currency+", value="+value);
  88                                 db.execSQL("insert into account_values(account, currency, value) values(?, ?, ?);",
  89                                         new Object[]{last_account_name, currency, Float.valueOf(value)});
  90                             }
  91                         }
  92
  93                         db.setTransactionSuccessful();
  94                     }
  95                     finally {
  96                         db.endTransaction();
  97                     }
  98
  99                 }
 100             }
 101             finally {
 102                 resp.close();
 103             }
 104         } catch (MalformedURLException e) {
 105             error = R.string.err_bad_backend_url;
 106             e.printStackTrace();
 107         } catch (IOException e) {
 108             error = R.string.err_net_io_error;
 109             e.printStackTrace();
 110         }
 111         catch (Exception e) {
 112             error = R.string.err_net_error;
 113             e.printStackTrace();
 114         }
 115
 116         return null;
 117     }
 118
 119     abstract protected void onProgressUpdate(Integer... values);
 120
 121     abstract protected void onPostExecute(Void result);
 122 }