protected static void WriteAmf(Stream stm, object obj)
{
if (obj == null)
{
stm.WriteByte((byte)DataType.Null);
}
else if (obj is byte || obj is int || obj is uint || obj is float || obj is double) // 只列举了常用的
{
stm.WriteByte((byte)DataType.Number);
CDataHelper.BE_WriteDouble(stm, double.Parse(obj.ToString()));
}
else if (obj is bool)
{
stm.WriteByte((byte)DataType.Boolean);
stm.WriteByte((byte)((bool)obj ? 1 : 0));
}
else if (obj is string)
{
string str = obj as string;
int len = Encoding.UTF8.GetByteCount(str);
if (len > 0xffff)
{
stm.WriteByte((byte)DataType.LongString);
CDataHelper.BE_WriteLongStr(stm, str);
}
else
{
stm.WriteByte((byte)DataType.String);
CDataHelper.BE_WriteShortStr(stm, str);
}
}
else if (obj is Array)
{
stm.WriteByte((byte)DataType.Array);
Array ary = obj as Array;
CDataHelper.BE_WriteUInt32(stm, (uint)ary.Length);
foreach (object o in ary)
{
WriteAmf(stm, o);
}
}
else if (obj is IDictionary)
{
stm.WriteByte((byte)DataType.Object);
foreach (DictionaryEntry e in obj as IDictionary)
{
CDataHelper.BE_WriteShortStr(stm, e.Key.ToString());
WriteAmf(stm, e.Value);
}
CDataHelper.BE_WriteShortStr(stm, ""); // write only a short(0)
stm.WriteByte((byte)DataType.EndOfObject);
}
else
{
Trace.Assert(false, "暂未处理的数据类型");
stm.WriteByte((byte)DataType.Unsupported);
}
}
protected static object ReadAmf(Stream stm, CRefTable rt)
{
int type = stm.ReadByte();
switch ((DataType)type)
{
case DataType.Undefined:
return(null);
case DataType.Null:
return(null);
case DataType.False:
return(false);
case DataType.True:
return(true);
case DataType.Integer:
return(ReadInt(stm));
case DataType.Double:
return(CDataHelper.BE_ReadDouble(stm));
case DataType.String:
return(ReadString(stm, rt));
case DataType.XmlDoc:
break;
case DataType.Date:
break;
case DataType.Array:
return(ReadArray(stm, rt));
case DataType.Object:
return(ReadHashObject(stm, rt));
case DataType.Xml:
break;
case DataType.ByteArray:
break;
default:
break;
}
Trace.Assert(false, "暂未处理的数据类型");
return(null);
}
protected static CNameObjDict ReadHashObject(Stream stm)
{
CNameObjDict dic = new CNameObjDict();
bool oe = false;
while (true)
{
string key = CDataHelper.BE_ReadShortStr(stm);
object value = ReadAmf(stm, ref oe);
if (oe)
{
Trace.Assert(key == "");
break;
}
dic[key] = value;
}
return(dic);
}
protected static string ReadString(Stream stm, CRefTable rt)
{
uint head = ReadInt(stm);
int len = (int)(head >> 1);
if (len <= 0)
{
return("");
}
if (IsRefrence(head))
{
return(rt.str[len]);
}
string str = CDataHelper.ReadUtfStr(stm, len);
rt.str.Add(str);
return(str);
}
protected static void WriteAmf(Stream stm, object obj)
{
if (obj == null)
{
stm.WriteByte((byte)DataType.Null);
}
else if (obj is byte || (obj is int && (uint)(int)obj < MaxU29) || (obj is uint && (uint)obj < MaxU29)) // U29无符号整形
{
stm.WriteByte((byte)DataType.Integer);
WriteInt(stm, uint.Parse(obj.ToString()));
}
else if (obj is int || obj is uint || obj is float || obj is double) // 只列举了常用的
{
stm.WriteByte((byte)DataType.Double);
CDataHelper.BE_WriteDouble(stm, double.Parse(obj.ToString()));
}
else if (obj is bool)
{
if ((bool)obj)
{
stm.WriteByte((byte)DataType.True);
}
else
{
stm.WriteByte((byte)DataType.False);
}
}
else if (obj is string)
{
stm.WriteByte((byte)DataType.String);
WriteString(stm, obj as string);
}
else if (obj is CMixArray)
{
stm.WriteByte((byte)DataType.Array);
CMixArray ary = obj as CMixArray;
uint head = ((uint)ary.FixedLength << 1) | 1;
WriteInt(stm, head);
foreach (KeyValuePair <string, object> pair in ary.Dynamic)
{
WriteString(stm, pair.Key);
WriteAmf(stm, pair.Value);
}
WriteString(stm, "");
foreach (object o in ary.Fixed)
{
WriteAmf(stm, o);
}
}
else if (obj is Array)
{
stm.WriteByte((byte)DataType.Array);
Array ary = obj as Array;
uint head = ((uint)ary.Length << 1) | 1;
WriteInt(stm, head);
WriteString(stm, "");
foreach (object o in ary)
{
WriteAmf(stm, o);
}
}
else if (obj is IDictionary)
{
stm.WriteByte((byte)DataType.Object);
IDictionary dic = obj as IDictionary;
uint head = 0x0B;
WriteInt(stm, head);
if (obj is CNameObjDict)
{
WriteString(stm, (obj as CNameObjDict).className);
}
else
{
WriteString(stm, "");
}
foreach (DictionaryEntry e in obj as IDictionary)
{
if (e.Key.ToString() == "" && e.Value is string) //解析时为了好看放进去的ClassName
{
continue;
}
WriteString(stm, e.Key.ToString());
WriteAmf(stm, e.Value);
}
WriteString(stm, "");
}
else
{
Trace.Assert(false, "暂未处理的数据类型");
stm.WriteByte((byte)DataType.Undefined);
}
}
protected static object ReadAmf(Stream stm, ref bool objEnd)
{
int type = stm.ReadByte();
bool oe = true;
switch ((DataType)type)
{
case DataType.Number:
return(CDataHelper.BE_ReadDouble(stm));
case DataType.Boolean:
return(stm.ReadByte() != 0x0);
case DataType.String:
return(CDataHelper.BE_ReadShortStr(stm));
case DataType.Object:
return(ReadHashObject(stm));
case DataType.MovieClip:
break;
case DataType.Null:
return(null);
case DataType.Undefined:
return(null);
case DataType.Reference:
break;
case DataType.MixedArray:
CDataHelper.BE_ReadUInt32(stm); // highest numeric index
return(ReadHashObject(stm));
case DataType.EndOfObject:
Trace.Assert(!objEnd, "此处不应出现EndOfObject");
objEnd = true;
return(null);
case DataType.Array:
{
uint len = CDataHelper.BE_ReadUInt32(stm);
object[] ary = new object[len];
for (uint i = 0; i < len; i++)
{
ary[i] = ReadAmf(stm, ref oe);
}
return(ary);
}
case DataType.Date:
break;
case DataType.LongString:
return(CDataHelper.BE_ReadLongStr(stm));
case DataType.Unsupported:
return(null);
case DataType.Recordset:
break;
case DataType.XML:
break;
case DataType.TypedObject:
break;
case DataType.AMF3data:
return(CAmf3Helper.Read(stm));
default:
break;
}
Trace.Assert(false, "暂未处理的数据类型");
return(null);
}
