public void AddChild(PowerPointRecord entry)
{
if (this._children == null)
{
this._children = new List <PowerPointRecord>();
}
this._children.Add(entry);
}
/// <summary>
/// 初始化新的Record
/// </summary>
/// <param name="parent">父节点</param>
/// <param name="version">RecordVersion和Instance</param>
/// <param name="type">Record类型</param>
/// <param name="length">Record内容大小</param>
/// <param name="offset">Record相对PowerPoint Document偏移</param>
public PowerPointRecord(PowerPointRecord parent, UInt16 version, UInt16 type, UInt32 length, Int64 offset)
{
this._recVer = (UInt16)(version & 0xF);
this._recInstance = (UInt16)(version & 0xFFF0);
this._recType = (RecordType)type;
this._recLen = length;
this._offset = offset;
this._deepth = (parent == null ? 0 : parent._deepth + 1);
this._parent = parent;
if (_recVer == 0xF)
{
this._children = new List <PowerPointRecord>();
}
}
/// <summary>
/// 初始化新的Record
/// </summary>
/// <param name="parent">父节点</param>
/// <param name="version">RecordVersion和Instance</param>
/// <param name="type">Record类型</param>
/// <param name="length">Record内容大小</param>
/// <param name="offset">Record相对PowerPoint Document偏移</param>
public PowerPointRecord(PowerPointRecord parent, UInt16 version, UInt16 type, UInt32 length, Int64 offset)
{
this._recVer = (UInt16)(version & 0xF);
this._recInstance = (UInt16)(version & 0xFFF0);
this._recType = (RecordType)type;
this._recLen = length;
this._offset = offset;
this._deepth = (parent == null ? 0 : parent._deepth + 1);
this._parent = parent;
if (_recVer == 0xF)
{
this._children = new List<PowerPointRecord>();
}
}
public void AddChild(PowerPointRecord entry)
{
if (this._children == null)
{
this._children = new List<PowerPointRecord>();
}
this._children.Add(entry);
}
private PowerPointRecord GetRecord(PowerPointRecord parent)
{
if (this._stream.Position >= this._stream.Length)
{
return null;
}
UInt16 version = this._reader.ReadUInt16();
UInt16 type = this._reader.ReadUInt16();
UInt32 length = this._reader.ReadUInt32();
return new PowerPointRecord(parent, version, type, length, this._stream.Position);
}
private PowerPointRecord ReadRecord(PowerPointRecord parent)
{
PowerPointRecord record = GetRecord(parent);
if (record == null)
{
return null;
}
#region 测试方法
else
{
this._recordTree.Append('-', record.Deepth * 2);
this._recordTree.AppendFormat("[{0}]-[{1}]-[Len:{2}]", record.RecordType, record.Deepth, record.RecordLength);
this._recordTree.AppendLine();
}
#endregion
if (parent == null)
{
this._records.Add(record);
}
else
{
parent.AddChild(record);
}
if (record.RecordVersion == 0xF)
{
while (this._stream.Position < record.Offset + record.RecordLength)
{
this.ReadRecord(record);
}
}
else
{
if (record.Parent != null && (
record.Parent.RecordType == RecordType.ListWithTextContainer ||
record.Parent.RecordType == RecordType.HeadersFootersContainer ||
(UInt32)record.Parent.RecordType == 0xF00D))
{
if (record.RecordType == RecordType.TextCharsAtom || record.RecordType == RecordType.CString)//找到Unicode双字节文字内容
{
Byte[] data = this._reader.ReadBytes((Int32)record.RecordLength);
this._allText.Append(StringHelper.GetString(true, data));
this._allText.AppendLine();
}
else if (record.RecordType == RecordType.TextBytesAtom)//找到Unicode<256单字节文字内容
{
Byte[] data = this._reader.ReadBytes((Int32)record.RecordLength);
this._allText.Append(StringHelper.GetString(false, data));
this._allText.AppendLine();
}
else
{
this._stream.Seek(record.RecordLength, SeekOrigin.Current);
}
}
else
{
this._stream.Seek(record.RecordLength, SeekOrigin.Current);
}
}
return record;
}
