private String DecodeString(PdfString ps)
{
if (ps.IsHexWriting())
{
return(PdfEncodings.ConvertToString(ps.GetBytes(), "UnicodeBigUnmarked"));
}
else
{
return(ps.ToUnicodeString());
}
}
/** Gets the field value or <CODE>null</CODE> if the field does not
* exist or has no value defined.
* @param name the fully qualified field name
* @return the field value or <CODE>null</CODE>
*/
public String GetFieldValue(String name)
{
PdfDictionary field = (PdfDictionary)fields[name];
if (field == null)
{
return(null);
}
PdfObject v = GetPdfObject(field.Get(PdfName.V));
if (v == null)
{
return(null);
}
if (v.IsName())
{
return(PdfName.DecodeName(((PdfName)v).ToString()));
}
else if (v.IsString())
{
PdfString vs = (PdfString)v;
if (encoding == null || vs.Encoding != null)
{
return(vs.ToUnicodeString());
}
byte[] b = vs.GetBytes();
if (b.Length >= 2 && b[0] == (byte)254 && b[1] == (byte)255)
{
return(vs.ToUnicodeString());
}
try {
if (encoding.Equals(PdfName.SHIFT_JIS))
{
return(Encoding.GetEncoding(932).GetString(b));
}
else if (encoding.Equals(PdfName.UHC))
{
return(Encoding.GetEncoding(949).GetString(b));
}
else if (encoding.Equals(PdfName.GBK))
{
return(Encoding.GetEncoding(936).GetString(b));
}
else if (encoding.Equals(PdfName.BIGFIVE))
{
return(Encoding.GetEncoding(950).GetString(b));
}
}
catch {
}
return(vs.ToUnicodeString());
}
return(null);
}
private static void IterateItems(PdfDictionary dic, Hashtable items)
{
PdfArray nn = (PdfArray)PdfReader.GetPdfObjectRelease(dic.Get(PdfName.NAMES));
if (nn != null)
{
for (int k = 0; k < nn.Size; ++k)
{
PdfString s = (PdfString)PdfReader.GetPdfObjectRelease(nn[k++]);
items[PdfEncodings.ConvertToString(s.GetBytes(), null)] = nn[k];
}
}
else if ((nn = (PdfArray)PdfReader.GetPdfObjectRelease(dic.Get(PdfName.KIDS))) != null)
{
for (int k = 0; k < nn.Size; ++k)
{
PdfDictionary kid = (PdfDictionary)PdfReader.GetPdfObjectRelease(nn[k]);
IterateItems(kid, items);
}
}
}
