// n = {4, 8}
public static double ReadNBytesReal(byte[] bytes, int n, ulong at)
{
switch (n)
{
case 4:
var f32 = new Float32Bits(bytes, at);
return(f32.Value);
case 8:
var f64 = new Float64Bits(bytes, at);
return(f64.Value);
default:
throw new PlistException("undefined byte size");
}
}
private static ulong WriteObjectBinary(Stream stream, object root, byte objectRefSize, byte[] encodeBuffer, ref ulong objectIndex, List <ulong> offsetTable)
{
ulong objectRef = objectIndex++;
ulong objectAt = (ulong)stream.Position;
offsetTable.Add(objectAt);
if (root == null)
{
throw new PlistException("unsupported null");
}
else if (root is bool)
{
if ((bool)root)
{
stream.WriteByte(TypeBitsBoolOrNil | TrueBit);
}
else
{
stream.WriteByte(TypeBitsBoolOrNil | FalseBit);
}
}
else if (root is int)
{
WriteInteger((int)root, stream);
}
else if (root is double)
{
// real, 2^3 = 8 byte
// 0010 0011
// force use double
byte headbyte = TypeBitsReal | 0x03;
stream.WriteByte(headbyte);
var f64 = new Float64Bits((double)root);
f64.Write(stream);
}
else if (root is DateTime)
{
DateTime date = (DateTime)root;
TimeSpan elapsedSpan = date.ToUniversalTime() - BaseTime;
double elapsed = elapsedSpan.TotalSeconds;
byte headbyte = TypeBitsDate | 0x03;
stream.WriteByte(headbyte);
var f64 = new Float64Bits(elapsed);
f64.Write(stream);
}
else if (root is string)
{
string text = root as string;
byte typebit;
int count;
int writeBytes;
if (IsASCIIEncodable(text))
{
typebit = TypeBitsASCIIString;
writeBytes = ASCII.GetBytes(text, 0, text.Length, encodeBuffer, 0);
count = writeBytes;
}
else
{
typebit = TypeBitsUTF16String;
writeBytes = UTF16BE.GetBytes(text, 0, text.Length, encodeBuffer, 0);
count = writeBytes >> 1;
}
if (count < 15)
{
byte headbyte = (byte)(typebit | count);
stream.WriteByte(headbyte);
}
else
{
byte headbyte = (byte)(typebit | 0x0F);
stream.WriteByte(headbyte);
WriteInteger((long)count, stream);
}
stream.Write(encodeBuffer, 0, writeBytes);
}
else if (root is byte[])
{
byte[] data = root as byte[];
byte typebit = TypeBitsBinaryData;
if (data.Length < 15)
{
byte headbyte = (byte)(typebit | data.Length);
stream.WriteByte(headbyte);
}
else
{
byte headbyte = (byte)(typebit | 0x0F);
stream.WriteByte(headbyte);
WriteInteger(data.LongLength, stream);
}
stream.Write(data, 0, data.Length);
}
else if (root is PlistList)
{
PlistList objectArray = root as PlistList;
byte typebit = TypeBitsArray;
if (objectArray.Count < 15)
{
byte headbyte = (byte)(typebit | objectArray.Count);
stream.WriteByte(headbyte);
}
else
{
byte headbyte = (byte)(typebit | 0x0F);
stream.WriteByte(headbyte);
WriteInteger(objectArray.Count, stream);
}
ulong arrayAt = (ulong)stream.Position;
// reserve data
ulong reserveBytes = (ulong)objectArray.Count * objectRefSize;
for (ulong i = 0; i < reserveBytes; ++i)
{
stream.WriteByte(0);
}
for (int i = 0; i < objectArray.Count; ++i)
{
ulong arrayObjectRef = WriteObjectBinary(stream, objectArray[i], objectRefSize, encodeBuffer, ref objectIndex, offsetTable);
stream.Seek((long)arrayAt + i * objectRefSize, SeekOrigin.Begin);
BigEndianWriter.WriteNBytesUnsignedInteger(stream, arrayObjectRef, objectRefSize);
stream.Seek(0, SeekOrigin.End);
}
}
else if (root is PlistDictionary)
{
PlistDictionary objectDictionary = root as PlistDictionary;
byte typebit = TypeBitsDictionary;
if (objectDictionary.Count < 15)
{
byte headbyte = (byte)(typebit | objectDictionary.Count);
stream.WriteByte(headbyte);
}
else
{
byte headbyte = (byte)(typebit | 0x0F);
stream.WriteByte(headbyte);
WriteInteger(objectDictionary.Count, stream);
}
ulong dictionaryAt = (ulong)stream.Position;
// reserve data
ulong reserveBytes = (ulong)objectDictionary.Count * 2 * objectRefSize;
for (ulong j = 0; j < reserveBytes; ++j)
{
stream.WriteByte(0);
}
/* key, key, key, value, value, value... */
long keyBytes = objectRefSize * (long)objectDictionary.Count;
int i = 0;
foreach (var objectKeyValue in objectDictionary)
{
ulong arrayKeyRef = WriteObjectBinary(stream, objectKeyValue.Key, objectRefSize, encodeBuffer, ref objectIndex, offsetTable);
ulong arrayValueRef = WriteObjectBinary(stream, objectKeyValue.Value, objectRefSize, encodeBuffer, ref objectIndex, offsetTable);
stream.Seek((long)dictionaryAt + i * objectRefSize, SeekOrigin.Begin);
BigEndianWriter.WriteNBytesUnsignedInteger(stream, arrayKeyRef, objectRefSize);
stream.Seek((long)dictionaryAt + keyBytes + i * objectRefSize, SeekOrigin.Begin);
BigEndianWriter.WriteNBytesUnsignedInteger(stream, arrayValueRef, objectRefSize);
stream.Seek(0, SeekOrigin.End);
i++;
}
}
else
{
throw new PlistException();
}
return(objectRef);
}
