private static void WriteString(StringToken stringToken, Stream outputStream)
{
outputStream.WriteByte(StringStart);
if (stringToken.EncodedWith == StringToken.Encoding.Iso88591)
{
// iso 88591 (or really PdfDocEncoding in non-contentstream circumstances shouldn't
// have these chars but seems like internally this isn't obeyed (see:
// CanCreateDocumentInformationDictionaryWithNonAsciiCharacters test) and it may
// happen during parsing as well -> switch to unicode
if (stringToken.Data.Any(x => x > 255))
{
var data = new StringToken(stringToken.Data, StringToken.Encoding.Utf16BE).GetBytes();
outputStream.Write(data, 0, data.Length);
}
else
{
int ei;
for (var i = 0; i < stringToken.Data.Length; i++)
{
var c = (int)stringToken.Data[i];
if (c == (int)'(' || c == (int)')') // wastes a little space if escaping not needed but better than forward searching
{
outputStream.WriteByte((byte)'\\');
outputStream.WriteByte((byte)c);
}
else if ((ei = Array.IndexOf(EscapeNeeded, c)) > -1)
{
outputStream.WriteByte((byte)'\\');
outputStream.WriteByte((byte)Escaped[ei]);
}
else if (c < 32 || c > 126) // non printable
{
var b3 = c / 64;
var b2 = (c - b3 * 64) / 8;
var b1 = c % 8;
outputStream.WriteByte((byte)'\\');
outputStream.WriteByte((byte)(b3 + '0'));
outputStream.WriteByte((byte)(b2 + '0'));
outputStream.WriteByte((byte)(b1 + '0'));
}
else
{
outputStream.WriteByte((byte)c);
}
}
}
}
else
{
var bytes = stringToken.GetBytes();
outputStream.Write(bytes, 0, bytes.Length);
}
outputStream.WriteByte(StringEnd);
WriteWhitespace(outputStream);
}