private byte _k; // Do not rename (binary serialization)
private static unsafe int HexsToChars(char *guidChars, int a, int b)
{
guidChars[0] = HexConverter.ToCharLower(a >> 4);
guidChars[1] = HexConverter.ToCharLower(a);
guidChars[2] = HexConverter.ToCharLower(b >> 4);
guidChars[3] = HexConverter.ToCharLower(b);
return(4);
}
private static unsafe int HexsToCharsHexOutput(char *guidChars, int a, int b)
{
guidChars[0] = '0';
guidChars[1] = 'x';
guidChars[2] = HexConverter.ToCharLower(a >> 4);
guidChars[3] = HexConverter.ToCharLower(a);
guidChars[4] = ',';
guidChars[5] = '0';
guidChars[6] = 'x';
guidChars[7] = HexConverter.ToCharLower(b >> 4);
guidChars[8] = HexConverter.ToCharLower(b);
return(9);
}
private void LoadHeader(Span <byte> buffer, out int indexOffset, out int dataOffset)
{
// tzdata files are expected to start with the form of "tzdata2012f\0" depending on the year of the tzdata used which is 2012 in this example
// since we're not differentiating on year, check for tzdata and the ending \0
var tz = (ushort)TZif_ToInt16(buffer.Slice(0, 2));
var data = (uint)TZif_ToInt32(buffer.Slice(2, 4));
if (tz != 0x747A || data != 0x64617461 || buffer[11] != 0)
{
// 0x747A 0x64617461 = {0x74, 0x7A} {0x64, 0x61, 0x74, 0x61} = "tz" "data"
var b = new StringBuilder(buffer.Length);
for (int i = 0; i < 12; ++i)
{
b.Append(' ').Append(HexConverter.ToCharLower(buffer[i]));
}
throw new InvalidOperationException(SR.Format(SR.InvalidOperation_BadTZHeader, TimeZoneFileName, b.ToString()));
}
indexOffset = TZif_ToInt32(buffer.Slice(12, 4));
dataOffset = TZif_ToInt32(buffer.Slice(16, 4));
}