private void LoadHash(long[] addresses)
{
this.objects = new Hashtable();
int part = 0;
int total = addresses.Length;
foreach (long add in addresses)
{
this.ProgressEvent(part, total);
this.memory.Seek(add, SeekOrigin.Begin);
StreamReader sr = new StreamReader(this.memory);
string line = sr.ReadLine();
if (line.Length < 2)
{
line = sr.ReadLine();
}
Match m = Regex.Match(line, @"(?'id'\d+)( )+0 obj", RegexOptions.ExplicitCapture);
if (m.Success)
{
int num = int.Parse(m.Groups["id"].Value);
if (!objects.ContainsKey(num))
{
objects.Add(num, PdfFileObject.Create(this, num, add));
}
}
part++;
}
}
public int Compare(object x, object y)
{
PdfFileObject a = x as PdfFileObject;
PdfFileObject b = y as PdfFileObject;
return(a.number.CompareTo(b.number));
}
internal PdfFileStreamObject(PdfFileObject obj)
{
this.address = obj.address;
this.length = obj.length;
this.text = obj.text;
this.number = obj.number;
this.PdfFile = obj.PdfFile;
this.LoadStreamBuffer();
}
internal PdfFileStreamObject(PdfFileObject obj)
{
this.address = obj.address;
this.length = obj.length;
this.text = obj.text;
this.number = obj.number;
this.PdfFile = obj.PdfFile;
this.LoadStreamBuffer();
}
internal static PdfFileObject Create(PdfFile PdfFile, int number, long address)
{
PdfFileObject pfo = new PdfFileObject();
pfo.PdfFile = PdfFile;
pfo.number = number;
pfo.address = address;
pfo.GetLenght(PdfFile);
pfo.LoadText();
if (pfo.Type == PdfObjectType.Stream)
{
pfo = new PdfFileStreamObject(pfo);
}
pfo.filterEval = new MatchEvaluator(pfo.FilterEval);
return(pfo);
}
internal ArrayList GetKids()
{
ArrayList kids = new ArrayList();
foreach (int id in this.GetArrayNumbers("Kids"))
{
PdfFileObject pfo = PdfFile.LoadObject(id);
if (pfo.Type == PdfObjectType.Page)
{
kids.Add(pfo);
}
else
{
kids.AddRange(pfo.GetKids());
}
}
return(kids);
}
internal void Load(PdfFile PdfFile, int[] PageNumbers, int startNumber)
{
this.PdfFile = PdfFile;
this.pageNumbers = new ArrayList();
this.sObjects = new Hashtable();
int part = 0;
int total = PageNumbers.Length;
foreach (int PageNumber in PageNumbers)
{
this.ProgressEvent(part, total);
PdfFileObject page = PdfFile.PageList[PageNumber] as PdfFileObject;
page.PopulateRelatedObjects(PdfFile, this.sObjects);
this.pageNumbers.Add(page.number);
part++;
}
this.transHash = this.CalcTransHash(startNumber);
foreach (PdfFileObject pfo in this.sObjects.Values)
{
pfo.Transform(transHash);
}
}
internal void PopulateRelatedObjects(PdfFile PdfFile, Hashtable container)
{
if (!container.ContainsKey(this.number))
{
container.Add(this.number, this);
Match m = Regex.Match(this.text, @"(?'parent'(/Parent)*)\s*(?'id'\d+) 0 R[^G]", RegexOptions.ExplicitCapture);
while (m.Success)
{
int num = int.Parse(m.Groups["id"].Value);
bool notparent = m.Groups["parent"].Length == 0;
if (notparent & !container.Contains(num))
{
PdfFileObject pfo = PdfFile.LoadObject(num);
if (pfo != null & !container.Contains(pfo.number))
{
pfo.PopulateRelatedObjects(PdfFile, container);
}
}
m = m.NextMatch();
}
}
}
internal virtual void Transform(Hashtable TransformationHash)
{
if (this.Type == PdfObjectType.Page && this.MediaBoxText == "")
{
PdfFileObject parent = this.Parent;
while (parent != null)
{
string mb = parent.MediaBoxText;
if (mb == "")
{
parent = parent.Parent;
}
else
{
this.text = Regex.Replace(this.text, @"/Type\s*/Page", "/Type /Page\r" + mb);
parent = null;
}
}
}
this.TransformationHash = TransformationHash;
this.text = Regex.Replace(this.text
, @"(?'id'\d+)(?'rest' 0 (obj|R))(?'end'[^G])", this.filterEval, RegexOptions.ExplicitCapture);
this.text = Regex.Replace(this.text, @"/Parent\s+(\d+ 0 R)*", "/Parent 2 0 R \r");
}
internal static PdfFileObject Create(PdfFile PdfFile, int number, long address)
{
PdfFileObject pfo = new PdfFileObject();
pfo.PdfFile = PdfFile;
pfo.number = number;
pfo.address = address;
pfo.GetLenght(PdfFile);
pfo.LoadText();
if (pfo.Type == PdfObjectType.Stream)
{
pfo = new PdfFileStreamObject(pfo);
}
pfo.filterEval=new MatchEvaluator(pfo.FilterEval);
return pfo;
}