The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/mobile/android/base/background/db/CursorDumper.java	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,99 @@
     1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
     1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this
     1.6 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.7 +
     1.8 +package org.mozilla.gecko.background.db;
     1.9 +
    1.10 +import android.database.Cursor;
    1.11 +
    1.12 +/**
    1.13 + * A utility for dumping a cursor the debug log.
    1.14 + * <p>
    1.15 + * <b>For debugging only!</p>
    1.16 + */
    1.17 +public class CursorDumper {
    1.18 +  protected static String fixedWidth(int width, String s) {
    1.19 +    if (s == null) {
    1.20 +      return spaces(width);
    1.21 +    }
    1.22 +    int length = s.length();
    1.23 +    if (width == length) {
    1.24 +      return s;
    1.25 +    }
    1.26 +    if (width > length) {
    1.27 +      return s + spaces(width - length);
    1.28 +    }
    1.29 +    return s.substring(0, width);
    1.30 +  }
    1.31 +
    1.32 +  protected static String spaces(int i) {
    1.33 +    return "                                     ".substring(0, i);
    1.34 +  }
    1.35 +
    1.36 +  protected static String dashes(int i) {
    1.37 +    return "-------------------------------------".substring(0, i);
    1.38 +  }
    1.39 +
    1.40 +  /**
    1.41 +   * Dump a cursor to the debug log, ignoring any log level settings.
    1.42 +   * <p>
    1.43 +   * The position in the cursor is maintained. Caller is responsible for opening
    1.44 +   * and closing cursor.
    1.45 +   *
    1.46 +   * @param cursor
    1.47 +   *          to dump.
    1.48 +   */
    1.49 +  public static void dumpCursor(Cursor cursor) {
    1.50 +    dumpCursor(cursor, 18, "records");
    1.51 +  }
    1.52 +
    1.53 +  /**
    1.54 +   * Dump a cursor to the debug log, ignoring any log level settings.
    1.55 +   * <p>
    1.56 +   * The position in the cursor is maintained. Caller is responsible for opening
    1.57 +   * and closing cursor.
    1.58 +   *
    1.59 +   * @param cursor
    1.60 +   *          to dump.
    1.61 +   * @param columnWidth
    1.62 +   *          how many characters per cursor column.
    1.63 +   * @param tags
    1.64 +   *          a descriptor, printed like "(10 tags)", in the header row.
    1.65 +   */
    1.66 +  protected static void dumpCursor(Cursor cursor, int columnWidth, String tags) {
    1.67 +    int originalPosition = cursor.getPosition();
    1.68 +    try {
    1.69 +      String[] columnNames = cursor.getColumnNames();
    1.70 +      int columnCount      = cursor.getColumnCount();
    1.71 +
    1.72 +      for (int i = 0; i < columnCount; ++i) {
    1.73 +        System.out.print(fixedWidth(columnWidth, columnNames[i]) + " | ");
    1.74 +      }
    1.75 +      System.out.println("(" + cursor.getCount() + " " + tags + ")");
    1.76 +      for (int i = 0; i < columnCount; ++i) {
    1.77 +        System.out.print(dashes(columnWidth) + " | ");
    1.78 +      }
    1.79 +      System.out.println("");
    1.80 +      if (!cursor.moveToFirst()) {
    1.81 +        System.out.println("EMPTY");
    1.82 +        return;
    1.83 +      }
    1.84 +
    1.85 +      cursor.moveToFirst();
    1.86 +      while (!cursor.isAfterLast()) {
    1.87 +        for (int i = 0; i < columnCount; ++i) {
    1.88 +          System.out.print(fixedWidth(columnWidth, cursor.getString(i)) + " | ");
    1.89 +        }
    1.90 +        System.out.println("");
    1.91 +        cursor.moveToNext();
    1.92 +      }
    1.93 +      for (int i = 0; i < columnCount-1; ++i) {
    1.94 +        System.out.print(dashes(columnWidth + 3));
    1.95 +      }
    1.96 +      System.out.print(dashes(columnWidth + 3 - 1));
    1.97 +      System.out.println("");
    1.98 +    } finally {
    1.99 +      cursor.moveToPosition(originalPosition);
   1.100 +    }
   1.101 +  }
   1.102 +}