private void init()
{
_document = new Document();
_writer = new PdfSmartCopy(_document, OutputFileStream);
_writer.SetFullCompression();
_document.Open();
}
//========================================
//
//
//========================================
private void ExtractAndSaveFile(string sourcePdfFilePath, string outpuPdfFileName, int startPage, int numberOfPages)
{
using (PdfReader reader = new PdfReader(sourcePdfFilePath))
{
Document document = new Document();
PdfSmartCopy partial = new PdfSmartCopy(document, new FileStream(outpuPdfFileName, FileMode.Create));
partial.SetPdfVersion(PdfWriter.PDF_VERSION_1_5);
partial.CompressionLevel = PdfStream.BEST_COMPRESSION;
partial.SetFullCompression();
document.Open();
for (int pagenumber = startPage; pagenumber < (startPage + numberOfPages); pagenumber++)
{
if (reader.NumberOfPages >= pagenumber)
{
partial.AddPage(partial.GetImportedPage(reader, pagenumber));
}
else
{
break;
}
}
document.Close();
}
}
public static void ExtractPagePerSize(string sourcePdfPath, string outputPdfPath, int pageNumber, decimal maxFileSize)
{
PdfReader reader = null;
FileInfo info = new FileInfo(sourcePdfPath);
Dictionary <int, Tuple <Document, FileStream, PdfSmartCopy> > docs = new Dictionary <int, Tuple <Document, FileStream, PdfSmartCopy> >();
try
{
// Intialize a new PdfReader instance with the contents of the source Pdf file:
reader = new PdfReader(sourcePdfPath);
int docIndex = 0;
int currentPage = 0;
for (int i = 0; i < reader.NumberOfPages; i++)
{
currentPage = i + 1;
Document document;
FileStream fs;
PdfSmartCopy pdfCopyProvider;
if (docs.Count <= 0)
{
document = new Document(reader.GetPageSizeWithRotation(currentPage));
fs = new FileStream(Path.Combine(outputPdfPath, info.Name.Replace(info.Extension, "") + "_" + docIndex + ".pdf"), System.IO.FileMode.Create);
pdfCopyProvider = new PdfSmartCopy(document, fs);
pdfCopyProvider.SetFullCompression();
document.Open();
docs.Add(docIndex, new Tuple <Document, FileStream, PdfSmartCopy>(document, fs, pdfCopyProvider));
}
else
{
decimal overhead = maxFileSize * 0.20m;
if (docs[docIndex].Item2.Length > ((maxFileSize - overhead) * 1024 * 1024))
{
docIndex++;
document = new Document(reader.GetPageSizeWithRotation(currentPage));
fs = new FileStream(Path.Combine(outputPdfPath, info.Name.Replace(info.Extension, "") + "_" + docIndex + ".pdf"), System.IO.FileMode.Create);
pdfCopyProvider = new PdfSmartCopy(document, fs);
pdfCopyProvider.SetFullCompression();
document.Open();
docs.Add(docIndex, new Tuple <Document, FileStream, PdfSmartCopy>(document, fs, pdfCopyProvider));
}
else
{
pdfCopyProvider = docs[docIndex].Item3;
}
}
PdfImportedPage importedPage = pdfCopyProvider.GetImportedPage(reader, currentPage);
pdfCopyProvider.AddPage(importedPage);
//if (docs[docIndex].Item2.Length > 2000000)
//{
//}
}
// Capture the correct size and orientation for the page:
// Initialize an instance of the PdfCopyClass with the source
// document and an output file stream:
// Extract the desired page number:
foreach (Tuple <Document, FileStream, PdfSmartCopy> i in docs.Values)
{
i.Item1.Close();
i.Item2.Close();
i.Item3.Close();
}
reader.Close();
}
catch (Exception ex)
{
throw ex;
}
}
public static void ExtractPagePerPage(string sourcePdfPath, string outputPdfPath, int pages)
{
PdfReader reader = null;
FileInfo info = new FileInfo(sourcePdfPath);
Dictionary <int, Tuple <Document, FileStream, PdfSmartCopy> > docs = new Dictionary <int, Tuple <Document, FileStream, PdfSmartCopy> >();
try
{
// Intialize a new PdfReader instance with the contents of the source Pdf file:
reader = new PdfReader(sourcePdfPath);
int docIndex = 1;
int currentPage = 0;
int pageCounter = 0;
for (int i = 0; i < reader.NumberOfPages; i++)
{
currentPage = i + 1;
Document document;
FileStream fs;
PdfSmartCopy pdfCopyProvider;
if (docs.Count <= 0)
{
document = new Document(reader.GetPageSizeWithRotation(currentPage));
string fileName = GetTextFromPDF(reader, docIndex);
fs = new FileStream(Path.Combine(outputPdfPath, fileName + ".pdf"), System.IO.FileMode.Create);
pdfCopyProvider = new PdfSmartCopy(document, fs);
pdfCopyProvider.SetFullCompression();
document.Open();
docs.Add(docIndex, new Tuple <Document, FileStream, PdfSmartCopy>(document, fs, pdfCopyProvider));
pageCounter = 1;
}
else
{
if (pageCounter >= pages)
{
docIndex++;
document = new Document(reader.GetPageSizeWithRotation(currentPage));
string fileName = GetTextFromPDF(reader, docIndex);
string destinationPath = Path.Combine(outputPdfPath, fileName + ".pdf");
if (!File.Exists(destinationPath))
{
fs = new FileStream(destinationPath, System.IO.FileMode.Create);
pdfCopyProvider = new PdfSmartCopy(document, fs);
pdfCopyProvider.SetFullCompression();
document.Open();
docs.Add(docIndex, new Tuple <Document, FileStream, PdfSmartCopy>(document, fs, pdfCopyProvider));
}
else
{
pdfCopyProvider = null;
}
pageCounter = 1;
}
else
{
pdfCopyProvider = docs[docIndex].Item3;
pageCounter++;
}
}
if (pdfCopyProvider != null)
{
PdfImportedPage importedPage = pdfCopyProvider.GetImportedPage(reader, currentPage);
pdfCopyProvider.AddPage(importedPage);
}
}
foreach (Tuple <Document, FileStream, PdfSmartCopy> i in docs.Values)
{
i.Item1.Close();
i.Item2.Close();
i.Item3.Close();
}
reader.Close();
}
catch (Exception ex)
{
throw ex;
}
}