/// <summary>
/// Write PDF document object summary to byte array
/// </summary>
/// <returns>Text string</returns>
public static string PdfFileSummary
(
PdfReader Reader
)
{
OutputCtrl Ctrl = new OutputCtrl();
Ctrl.AppendMessage(string.Format("PDF file name: {0}", Reader.SafeFileName));
Ctrl.AddEol();
Ctrl.AppendMessage("Trailer Dictionary");
Ctrl.AppendMessage("------------------");
Reader.TrailerDict.ToByteArray(Ctrl);
Ctrl.AddEol();
Ctrl.AddEol();
Ctrl.AppendMessage("Indirect Objects");
Ctrl.AppendMessage("----------------");
// output one object at a time
foreach (PdfIndirectObject Obj in Reader.ObjectArray)
{
if (Obj != null)
{
Obj.ObjectSummary(Ctrl);
}
}
// successful exit
return(ByteArrayToString(Ctrl.ToArray()));
}
/// <summary>
/// Create PDF file's object summary
/// </summary>
/// <returns>ASCII byte array</returns>
public static string ObjectSummary
(
PdfIndirectObject ReaderObject
)
{
OutputCtrl Ctrl = new OutputCtrl();
ReaderObject.ObjectSummary(Ctrl);
return(ByteArrayToString(Ctrl.ToArray()));
}
/// <summary>
/// Page contents to text
/// </summary>
/// <param name="OpArray">Op array</param>
/// <returns>Byte array</returns>
public static byte[] ContentsToText
(
PdfOp[] OpArray
)
{
OutputCtrl Ctrl = new OutputCtrl();
// output one operator at a time
foreach (PdfOp Op in OpArray)
{
Op.ToByteArray(Ctrl);
}
// successful exit
return(Ctrl.ToArray());
}
/// <summary>
/// append object to byte array
/// </summary>
/// <param name="Ctrl">Output Control</param>
public virtual void ToByteArray
(
OutputCtrl Ctrl
)
{
// test for long line
Ctrl.TestEol();
// dictionary
if (GetType() == typeof(PdfDictionary))
{
Ctrl.Add('<');
Ctrl.Add('<');
foreach (PdfKeyValue KeyValue in ((PdfDictionary)this).KeyValueArray)
{
Ctrl.AppendText(KeyValue.Key);
KeyValue.Value.ToByteArray(Ctrl);
}
Ctrl.Add('>');
Ctrl.Add('>');
}
// array
else if (GetType() == typeof(PdfArray))
{
Ctrl.Add('[');
foreach (PdfBase ArrayItem in ((PdfArray)this).Items)
{
ArrayItem.ToByteArray(Ctrl);
}
Ctrl.Add(']');
}
// PDF string
else if (GetType() == typeof(PdfString))
{
// convert PDF string to visual display format
PdfStringToDisplay(Ctrl, ((PdfString)this).StrValue);
}
// get text from simple objects
else
{
Ctrl.AppendText(ToString());
}
return;
}
/// <summary>
/// convert PDF string to PDF file format
/// </summary>
/// <param name="Ctrl">Output Control</param>
/// <param name="StrByteArray">PDF string</param>
public void PdfStringToPdfFile
(
OutputCtrl Ctrl,
byte[] StrByteArray
)
{
// create output string with open and closing parenthesis
Ctrl.Add('(');
// move string to output
if (StrByteArray != null)
{
foreach (byte TestByte in StrByteArray)
{
Ctrl.TestEscEol();
// CR and NL must be replaced by \r and \n
// Otherwise PDF readers will convert CR or NL or CR-NL to NL
if (TestByte == '\r')
{
Ctrl.Add('\\');
Ctrl.Add('r');
}
else if (TestByte == '\n')
{
Ctrl.Add('\\');
Ctrl.Add('n');
}
else
{
// the three characters \ ( ) must be preceded by \
if (TestByte == (byte)'\\' || TestByte == (byte)'(' || TestByte == (byte)')')
{
Ctrl.Add('\\');
}
Ctrl.Add(TestByte);
}
}
}
// final closing parentesis
Ctrl.Add(')');
return;
}
/// <summary>
/// append object to byte array
/// </summary>
/// <param name="Ctrl">Output control</param>
/// <param name="StrByteArray">PDF string</param>
public void PdfStringToDisplay
(
OutputCtrl Ctrl,
byte[] StrByteArray
)
{
// test for printable characters
int Printable = 0;
foreach (byte TestByte in StrByteArray)
{
if (TestByte >= ' ' && TestByte <= '~')
{
Printable++;
}
}
// mostly printable
if (10 * Printable >= 9 * StrByteArray.Length)
{
// create output string with open and closing parenthesis
Ctrl.Add('(');
// move string to output
foreach (byte TestByte in StrByteArray)
{
Ctrl.TestEscEol();
// CR and NL must be replaced by \r and \n
// Otherwise PDF readers will convert CR or NL or CR-NL to NL
if (TestByte == '\r')
{
Ctrl.Add('\\');
Ctrl.Add('r');
}
else if (TestByte == '\n')
{
Ctrl.Add('\\');
Ctrl.Add('n');
}
else if (TestByte < ' ' || TestByte > '~')
{
Ctrl.Add('\\');
Ctrl.Add('x');
string Hex = string.Format("{0:x2}", TestByte);
Ctrl.Add(Hex[0]);
Ctrl.Add(Hex[1]);
}
else
{
// the three characters \ ( ) must be preceded by \
if (TestByte == (byte)'\\' || TestByte == (byte)'(' || TestByte == (byte)')')
{
Ctrl.Add('\\');
}
Ctrl.Add(TestByte);
}
}
// final closing parentesis
Ctrl.Add(')');
return;
}
// mostly unprintable
Ctrl.Add('<');
// move string to output
foreach (byte TestByte in StrByteArray)
{
Ctrl.TestEol();
string Hex = string.Format("{0:x2}", TestByte);
Ctrl.Add(Hex[0]);
Ctrl.Add(Hex[1]);
}
// final closing parentesis
Ctrl.Add('>');
return;
}
////////////////////////////////////////////////////////////////////
// Write indirect object to object analysis file
////////////////////////////////////////////////////////////////////
internal void ObjectSummary
(
OutputCtrl Ctrl
)
{
// write object header
Ctrl.AppendMessage(string.Format("Object number: {0}", ObjectNumber));
Ctrl.AppendMessage(string.Format("Object Value Type: {0}", ObjectDescription()));
Ctrl.AppendMessage(string.Format("File Position: {0} Hex: {0:X}", FilePosition));
if (ParentObjectNo != 0)
{
Ctrl.AppendMessage(string.Format("Parent object number: {0}", ParentObjectNo));
Ctrl.AppendMessage(string.Format("Parent object index: {0}", ParentObjectIndex));
}
if (ObjectType == ObjectType.Stream)
{
Ctrl.AppendMessage(string.Format("Stream Position: {0} Hex: {0:X}", StreamFilePosition));
Ctrl.AppendMessage(string.Format("Stream Length: {0} Hex: {0:X}", StreamLength));
}
// dictionary or stream
if (ObjectType == ObjectType.Dictionary || ObjectType == ObjectType.Stream)
{
string ObjectTypeStr = Dictionary.FindValue("/Type").ToName;
if (ObjectTypeStr == null)
{
ObjectTypeStr = PdfObjectType;
}
if (ObjectTypeStr != null)
{
Ctrl.AppendMessage(string.Format("Object Type: {0}", ObjectTypeStr));
}
string ObjectSubtypeStr = Dictionary.FindValue("/Subtype").ToName;
if (ObjectSubtypeStr != null)
{
Ctrl.AppendMessage(string.Format("Object Subtype: {0}", ObjectSubtypeStr));
}
// write to pdf file
Dictionary.ToByteArray(Ctrl);
// final terminator
Ctrl.AddEol();
}
// object has contents that is not stream
else if (ObjectType == ObjectType.Other)
{
// write content to pdf file
Value.ToByteArray(Ctrl);
// final terminator
Ctrl.AddEol();
}
// final terminator
Ctrl.AddEol();
// return string
return;
}
