/// <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;
}