| public static ASCII85Decode ( byte inp ) : byte[] | ||
| inp | byte | |
| return | byte[] | |
public byte[] Decode(byte[] b, PdfName filterName, PdfObject decodeParams, PdfDictionary streamDictionary)
{
MemoryStream outS = EnableMemoryLimitsAwareHandler(streamDictionary);
b = PdfReader.ASCII85Decode(b, outS);
return(b);
}
public byte[] Decode(byte[] b, PdfName filterName, PdfObject decodeParams, PdfDictionary streamDictionary)
{
b = PdfReader.ASCII85Decode(b);
return(b);
}
internal PdfStream getFormXObject(int pageNumber)
{
PdfDictionary page = pages[pageNumber - 1];
PdfObject contents = reader.getPdfObject(page.get(PdfName.CONTENTS));
int length = 0;
int offset = 0;
PdfDictionary dic = new PdfDictionary();
MemoryStream bout = null;
ArrayList filters = null;
if (contents != null)
{
if (contents.Type == PdfObject.STREAM)
{
PRStream stream = (PRStream)contents;
length = stream.Length;
offset = stream.Offset;
dic.putAll(stream);
}
else
{
PdfArray array = (PdfArray)contents;
ArrayList list = array.ArrayList;
bout = new MemoryStream();
for (int k = 0; k < list.Count; ++k)
{
PRStream stream = (PRStream)reader.getPdfObject((PdfObject)list[k]);
PdfObject filter = stream.get(PdfName.FILTER);
byte[] b = new byte[stream.Length];
file.seek(stream.Offset);
file.readFully(b);
filters = new ArrayList();
if (filter != null)
{
if (filter.Type == PdfObject.NAME)
{
filters.Add(filter);
}
else if (filter.Type == PdfObject.ARRAY)
{
filters = ((PdfArray)filter).ArrayList;
}
}
string name;
for (int j = 0; j < filters.Count; ++j)
{
name = ((PdfName)filters[j]).ToString();
if (name.Equals("/FlateDecode") || name.Equals("/Fl"))
{
b = PdfReader.FlateDecode(b);
}
else if (name.Equals("/ASCIIHexDecode") || name.Equals("/AHx"))
{
b = PdfReader.ASCIIHexDecode(b);
}
else if (name.Equals("/ASCII85Decode") || name.Equals("/A85"))
{
b = PdfReader.ASCII85Decode(b);
}
else if (name.Equals("/LZWDecode"))
{
b = PdfReader.LZWDecode(b);
}
else
{
throw new IOException("The filter " + name + " is not supported.");
}
}
bout.Write(b, 0, b.Length);
if (k != list.Count - 1)
{
bout.WriteByte((byte)'\n');
}
}
}
}
dic.put(PdfName.RESOURCES, reader.getPdfObject(page.get(PdfName.RESOURCES)));
dic.put(PdfName.TYPE, PdfName.XOBJECT);
dic.put(PdfName.SUBTYPE, PdfName.FORM);
dic.put(PdfName.BBOX, new PdfRectangle(((PdfImportedPage)importedPages[pageNumber]).BoundingBox));
dic.put(PdfName.MATRIX, IDENTITYMATRIX);
dic.put(PdfName.FORMTYPE, ONE);
PRStream str;
if (bout == null)
{
str = new PRStream(reader, offset);
str.putAll(dic);
str.Length = length;
}
else
{
str = new PRStream(reader, bout.ToArray());
str.putAll(dic);
}
return(str);
}
