/// <summary>
/// Copy FRU String bytes out of Byte Array
/// </summary>
internal static FruByteString ReadByteString(byte language, byte[] data, int offset, out int nextOffset)
{
/*
* The following presents the specification of the type/length byte.
* 7:6 - type code
* 00 - binary or unspecified
* 01 - BCD plus (see below)
* 10 - 6-bit ASCII, packed (overrides Language Codes)
* 11 - Interpretation depends on Language Codes. 11b indicates 8-bit ASCII + Latin 1 if
* the Language Code is English for the area or record containing the field, or 2-byte
* UNICODE (least significant byte first) if the Language Code is not English. At least
* two bytes of data must be present when this type is used. Therefore, the length
* (number of data bytes) will always be >1 if data is present, 0 if data is not present.
* 5:0 - number of data bytes.
* 000000 indicates that the field is empty. When the type code is 11b, a length of
* 000001 indicates 'end of fields'. I.e. Type/Length = C1h indicates 'end of fields'.
*/
byte lengthInfo = data[offset];
int length = lengthInfo & 0x3f; // 0011 1111
FruByteStringType encoding = (FruByteStringType)(lengthInfo >> 6);
nextOffset = offset + 1 + length;
byte[] readData = new byte[length];
if (data.Length >= nextOffset)
{
Array.Copy(data, offset + 1, readData, 0, length);
}
return(new FruByteString(language, encoding, readData));
}
private void Decode(byte language, byte[] data, FruByteStringType encoding)
{
switch (encoding)
{
case FruByteStringType.Binary:
this.Text = IpmiSharedFunc.ByteArrayToHexString(data);
break;
case FruByteStringType.BcdPlus:
this.Text = IpmiSharedFunc.DecodeBcdPlus(data);
break;
case FruByteStringType.Packed6BitAscii:
data = ReplaceNonAsciiChars(data);
this.Text = IpmiSharedFunc.DecodePacked6bitAscii(data);
break;
case FruByteStringType.Text:
// replace non ASCII characters
data = ReplaceNonAsciiChars(data);
if ((this.Language == FruByteString.defaultLang) ||
(this.Language == FruByteString.EnLang))
{
this.Text = System.Text.Encoding.ASCII.GetString(data).Trim();
}
else
{
this.Text = System.Text.Encoding.Unicode.GetString(data).Trim();
}
break;
}
}
protected FruByteString(byte language, FruByteStringType encoding, byte[] data)
{
this.Language = language;
this.Data = data;
this.Encoding = encoding;
Decode(language, data, encoding);
}
private void Decode(byte language, byte[] data, FruByteStringType encoding)
{
switch (encoding)
{
case FruByteStringType.Binary:
this.Text = IpmiSharedFunc.ByteArrayToHexString(data);
break;
case FruByteStringType.BcdPlus:
this.Text = IpmiSharedFunc.DecodeBcdPlus(data);
break;
case FruByteStringType.Packed6BitAscii:
data = ReplaceNonAsciiChars(data);
this.Text = IpmiSharedFunc.DecodePacked6bitAscii(data);
break;
case FruByteStringType.Text:
// replace non ASCII characters
data = ReplaceNonAsciiChars(data);
if ((this.Language == FruByteString.defaultLang) ||
(this.Language == FruByteString.EnLang))
{
this.Text = System.Text.Encoding.ASCII.GetString(data).Trim();
}
else
{
this.Text = System.Text.Encoding.Unicode.GetString(data).Trim();
}
break;
}
}
protected FruByteString(byte language, FruByteStringType encoding, byte[] data)
{
this.Language = language;
this.Data = data;
this.Encoding = encoding;
Decode(language, data, encoding);
}
