/**
* Returns the content of this string as a PDF <i>text string</i>.
*/
public string GetString()
{
// text string - BOM indicates Unicode
if (Bytes.Length >= 2)
{
if ((Bytes[0] & 0xff) == 0xFE && (Bytes[1] & 0xff) == 0xFF)
{
Encoding.BigEndianUnicode.GetString(Bytes, 2, Bytes.Length - 2);
}
else if ((Bytes[0] & 0xff) == 0xFF && (Bytes[1] & 0xff) == 0xFE)
{
Encoding.Unicode.GetString(Bytes, 2, Bytes.Length - 2);
}
}
// otherwise use PDFDocEncoding
return(PdfDocEncoding.ToString(Bytes));
}
/**
* Creates a new <i>text string</i> from a Java string.
*
* @param text The string value of the object.
*/
public CosString(string text)
{
// check whether the string uses only characters available in PDFDocEncoding
bool isOnlyPdfDocEncoding = true;
for (int i = 0; i < text.Length; i++)
{
if (!PdfDocEncoding.ContainsChar(text[i]))
{
isOnlyPdfDocEncoding = false;
break;
}
}
if (isOnlyPdfDocEncoding)
{
// PDFDocEncoded string
Bytes = PdfDocEncoding.GetBytes(text);
}
else
{
// UTF-16BE encoded string with a leading byte order marker
byte[] data = Encoding.BigEndianUnicode.GetBytes(text);
using (var outBytes = new MemoryStream(data.Length + 2))
using (var w = new StreamWriter(outBytes))
{
w.Write(0xFE); // BOM
w.Write(0xFF); // BOM
try
{
w.Write(data);
}
catch (IOException e)
{
// should never happen
throw new InvalidOperationException("Fatal Error", e);
}
Bytes = outBytes.ToArray();
}
}
}