public string fileExten; // file extension stoing var
//decompress the file
public void decompress(string fileName, FileStream fs2)
{
readBitByBit bit = new readBitByBit(fileName);
FileTreeroot = ReadTreeHeader(bit);
program.printPreorder(FileTreeroot);
var output = new StreamWriter(fs2);
int returnbit = -1;
char leaf = '1'; //checking if we reached the end of file
// PQueue.cNode top = root;
PQueue.cNode top = FileTreeroot;
while (true) //will run until we found the pseduo_EOF
{
if (top.leftZero == null && top.rightOne == null) //if leaf node is reached
{
leaf = top.value;
if (leaf == (char)program.Pseudo_EOF) //if it is last letter close the file
{
output.Close();
break;
}
else
{
output.Write(leaf); //else write in file
top = FileTreeroot; //again start from root
}
}
returnbit = bit.bitRead();
if (returnbit == 0) //if not leaf keep on reading the file
{
top = top.leftZero;
}
else if (returnbit == 1)
{
top = top.rightOne;
}
}
output.Close();
bit.close();
}
public PQueue.cNode ReadTreeHeader(readBitByBit bit)
{
char c = bit.ByteRead();
PQueue.cNode node = new PQueue.cNode();
if (c == '1')
{
node = new PQueue.cNode();
node.value = bit.ByteRead();
return(node);
}
else
{
PQueue.cNode leftChild = ReadTreeHeader(bit);
PQueue.cNode rightChild = ReadTreeHeader(bit);
node = new PQueue.cNode('0', leftChild, rightChild);
return(node);
}
}
//decompress the file
public void pdfDecompress(string fileName)
{
readBitByBit bit = new readBitByBit(fileName);
FileTreeroot = ReadTreeHeader(bit);
program.printPreorder(FileTreeroot);
int returnbit = -1; //initializing
char leaf = '1'; //checking if we reached the end of file
string content = null; //initializing
PQueue.cNode top = FileTreeroot;
while (true) //will run until we found the pseduo_EOF
{
if (top.leftZero == null && top.rightOne == null) //if leaf node is reached
{
leaf = top.value;
if (leaf == (char)program.Pseudo_EOF) //if it is last letter close the file
{
break;
}
else
{
content = content + leaf.ToString();
}
top = FileTreeroot; //again start from root
}
returnbit = bit.bitRead();
if (returnbit == 0) //if not leaf keep on reading the file
{
top = top.leftZero;
}
else if (returnbit == 1)
{
top = top.rightOne;
}
}
bit.close();
string newC = null;
try
{
newC = content.Substring(3); // in case of empty file
}
catch
{
}
//create pdf
if (fileExten == ".pdf")
{
Document document = new Document(PageSize.A4, 50, 35, 50, 35);
PdfWriter pdfWriter = PdfWriter.GetInstance(document, new FileStream(decmpFile, FileMode.Create));
document.Open();
Paragraph p = new Paragraph();
p.Font = FontFactory.GetFont(FontFactory.TIMES_ROMAN, 12f, BaseColor.BLACK);
p.Add(newC);
document.Add(p);
document.Close();
}
if (fileExten == ".docx")
{
var doc = DocX.Create(decmpFile);
doc.InsertParagraph(newC).Font("Times New Roman").FontSize(12d); //inserting paragraph
doc.Save();
}
}