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kaitai_struct_csharp_runtime
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Implement 64-bit reads

This commit is contained in:
Morgan Gangwere 2016-07-15 17:11:23 -07:00
parent 13f4bf2d51
commit 0111e2e9b4
1 changed files with 48 additions and 4 deletions
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52
KaitaiStream.cs
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@ -199,15 +199,59 @@ namespace Kaitai
#region 8-byte integer reads
#region 64-bit integers (unsigned)
///<summary>Read a 64-bit little-endian unsigned integer</summary>
public UInt64 readU8le() { throw new NotImplementedException(); }
public UInt64 readU8le() {
byte[] buffer = readBytes(8);
return (UInt64) (
( buffer[7] << 56) +
( buffer[6] << 48) +
( buffer[5] << 40) +
( buffer[4] << 32) +
( buffer[3] << 24) +
( buffer[2] << 16) +
( buffer[1] << 8) +
( buffer[0] << 0) ); // low byte
}
///<summary>Read a 64-bit big-endian unsigned integer</summary>
public UInt64 readU8be() { throw new NotImplementedException(); }
public UInt64 readU8be() {
byte[] buffer = readBytes(8);
return (UInt64) (
( buffer[0] << 56) + // high byte
( buffer[1] << 48) +
( buffer[2] << 40) +
( buffer[3] << 32) + // ^ high word
( buffer[4] << 24) + // v low word
( buffer[5] << 16) +
( buffer[6] << 8) +
( buffer[7] << 0) ); // low byte
}
#endregion
#region 64-bit integers (signed)
///<summary>Read a 64-bit little-endian signed integer</summary>
public UInt64 readS8le() { throw new NotImplementedException(); }
public Int64 readS8le() {
byte[] buffer = readBytes(8);
return (Int64) (
( buffer[7] << 56) +
( buffer[6] << 48) +
( buffer[5] << 40) +
( buffer[4] << 32) +
( buffer[3] << 24) +
( buffer[2] << 16) +
( buffer[1] << 8) +
( buffer[0] << 0) ); // low byte
}
///<summary>Read a 64-bit big-endian signed integer</summary>
public UInt64 readS8be() { throw new NotImplementedException(); }
public Int64 readS8be() {
byte[] buffer = readBytes(8);
return (Int64) (
( buffer[0] << 56) + // high byte
( buffer[1] << 48) +
( buffer[2] << 40) +
( buffer[3] << 32) + // ^ high word
( buffer[4] << 24) + // v low word
( buffer[5] << 16) +
( buffer[6] << 8) +
( buffer[7] << 0) ); // low byte
}
#endregion
#endregion // 8-byte integer reads