static void Main(string[] args)
{
var fileName = args.Length > 0 ? args[0] : "default.realm";
using (var mmf = MemoryMappedFile.CreateFromFile(fileName, FileMode.Open, null, 0, MemoryMappedFileAccess.Read))
using (var accessor = mmf.CreateViewAccessor(0, 0, MemoryMappedFileAccess.Read))
{
var header = RealmFileHeader.ReadFrom(accessor);
Console.WriteLine("File Format Version: {0}", header.GetTopRef().FileFormatVersion);
// ファイル内では、 ref の値はそのまま使える（追加でアロケーションすると話は別）
var topArray = new RealmArray(new ReferenceAccessor(accessor, header.GetTopRef().Ref));
Console.WriteLine("Top Array Count: {0}", topArray.Count);
// HasRefs な Array に数値が入っているので、最下位ビットが 1 になっている
// ビットシフトで元の値が手に入る
Console.WriteLine("Logical File Size: {0}", (ulong)topArray[2] >> 1);
// 配列の 1 番目がテーブル名リスト
var tableNameArray = new RealmArrayString(new ReferenceAccessor(accessor, (ulong)topArray[0]), false);
// 2 番目がテーブルのリスト
var tableArray = new RealmArray(new ReferenceAccessor(accessor, (ulong)topArray[1]));
Console.WriteLine();
Console.WriteLine("Tables");
for (var i = 0; i < tableNameArray.Count; i++)
{
var table = new RealmTable(new ReferenceAccessor(accessor, (ulong)tableArray[i]));
Console.WriteLine(" - {0} (Count: {1})", tableNameArray[i], table.RowCount);
PrintTableSpec(table.Spec, tableNameArray, GetBacklinkTarget, 2);
}
Console.WriteLine();
Console.WriteLine("Contents");
for (var i = 0; i < tableNameArray.Count; i++)
{
var table = new RealmTable(new ReferenceAccessor(accessor, (ulong)tableArray[i]));
Console.WriteLine(" - {0} ({1}/{2})", tableNameArray[i], Math.Min(table.RowCount, PrintCount), table.RowCount);
PrintTableContent(table, GetBacklinkTarget, 2);
}
string GetBacklinkTarget(int tableIndex, int columnIndex)
{
var targetTable = new RealmTable(tableArray.Ref.NewRef((ulong)tableArray[tableIndex]));
var targetColumnName = targetTable.Spec.GetColumn(columnIndex).Name;
return(tableNameArray[tableIndex] + "." + targetColumnName);
}
Debugger.Break();
}
}
private static void PrintTableContent(RealmTable table, Func <int, int, string> getBacklinkTarget, int indent)
{
var spec = table.Spec;
var count = Math.Min(table.RowCount, PrintCount);
for (var rowIndex = 0; rowIndex < count; rowIndex++)
{
for (var columnIndex = 0; columnIndex < spec.ColumnCount; columnIndex++)
{
var columnSpec = spec.GetColumn(columnIndex);
var columnName = columnSpec.Name;
var columnType = columnSpec.Type;
object value;
switch (columnType)
{
case ColumnType.Int:
value = columnSpec.Nullable
? table.GetNullableInt(columnIndex, rowIndex)
: table.GetInt(columnIndex, rowIndex);
break;
case ColumnType.Bool:
value = columnSpec.Nullable
? table.GetNullableBool(columnIndex, rowIndex)
: table.GetBool(columnIndex, rowIndex);
break;
case ColumnType.String:
value = table.GetString(columnIndex, rowIndex);
break;
case ColumnType.Binary:
var bin = table.GetBinary(columnIndex, rowIndex);
if (bin == null)
{
value = null;
}
else
{
value = string.Concat(bin.Select(x => x.ToString("x2")).Prepend("0x"));
}
break;
case ColumnType.Table:
var subtableRowCount = table.GetSubtable(columnIndex, rowIndex)?.RowCount ?? 0;
value = $"Subtable ({Math.Min(subtableRowCount, PrintCount)}/{subtableRowCount})";
break;
case ColumnType.OldDateTime:
value = columnSpec.Nullable
? table.GetNullableOldDateTime(columnIndex, rowIndex)
: table.GetOldDateTime(columnIndex, rowIndex);
break;
case ColumnType.Timestamp:
value = table.GetTimestamp(columnIndex, rowIndex);
break;
case ColumnType.Float:
value = columnSpec.Nullable
? table.GetNullableFloat(columnIndex, rowIndex)
: table.GetFloat(columnIndex, rowIndex);
break;
case ColumnType.Double:
value = columnSpec.Nullable
? table.GetNullableDouble(columnIndex, rowIndex)
: table.GetDouble(columnIndex, rowIndex);
break;
case ColumnType.Link:
value = table.GetLink(columnIndex, rowIndex);
break;
case ColumnType.LinkList:
value = string.Join(", ", table.GetLinkList(columnIndex, rowIndex));
break;
case ColumnType.BackLink:
columnName = "<- " + getBacklinkTarget(spec.GetLinkTargetTableIndex(columnIndex), spec.GetBacklinkOriginColumnIndex(columnIndex));
value = string.Join(", ", table.GetBacklinks(columnIndex, rowIndex));
break;
default:
value = "(unsupported type)";
break;
}
for (var i = 0; i < indent; i++)
{
Console.Write(" ");
}
Console.WriteLine(
"{0} {1}: {2}",
columnIndex == 0 ? "-" : " ",
columnName,
value ?? "(null)");
if (columnType == ColumnType.Table)
{
var subtable = table.GetSubtable(columnIndex, rowIndex);
if (subtable != null)
{
PrintTableContent(
table.GetSubtable(columnIndex, rowIndex),
getBacklinkTarget,
indent + 2
);
}
}
}
}
}
