diff options
Diffstat (limited to 'src/mscorlib/shared/System/Text/UnicodeEncoding.cs')
| -rw-r--r-- | src/mscorlib/shared/System/Text/UnicodeEncoding.cs | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/mscorlib/shared/System/Text/UnicodeEncoding.cs b/src/mscorlib/shared/System/Text/UnicodeEncoding.cs index 8e44317ce2..78355299c1 100644 --- a/src/mscorlib/shared/System/Text/UnicodeEncoding.cs +++ b/src/mscorlib/shared/System/Text/UnicodeEncoding.cs @@ -20,6 +20,9 @@ namespace System.Text internal static readonly UnicodeEncoding s_bigEndianDefault = new UnicodeEncoding(bigEndian: true, byteOrderMark: true); internal static readonly UnicodeEncoding s_littleEndianDefault = new UnicodeEncoding(bigEndian: false, byteOrderMark: true); + private static readonly byte[] s_bigEndianPreamble = new byte[2] { 0xfe, 0xff }; + private static readonly byte[] s_littleEndianPreamble = new byte[2] { 0xff, 0xfe }; + internal bool isThrowException = false; internal bool bigEndian = false; @@ -1898,6 +1901,10 @@ namespace System.Text return Array.Empty<Byte>(); } + public override ReadOnlySpan<byte> Preamble => + GetType() != typeof(UnicodeEncoding) ? GetPreamble() : // in case a derived UnicodeEncoding overrode GetPreamble + byteOrderMark ? (bigEndian ? s_bigEndianPreamble : s_littleEndianPreamble) : + Array.Empty<byte>(); public override int GetMaxByteCount(int charCount) { |