/// <summary>
/// uses itextsharp 4.1.6 to convert any pdf to 1.4 compatible pdf, called instead of PdfReader.open
/// </summary>
static public PdfDocument Open(MemoryStream sourceStream, PdfDocumentOpenMode openmode)
{
PdfDocument outDoc = null;
bool cantOpen = false;
sourceStream.Position = 0;
try
{
outDoc = PdfReader.Open(sourceStream, openmode);
int count = outDoc.PageCount;
}
catch (Exception)
{
cantOpen = true;
}
if (cantOpen || outDoc == null)
{
try
{
//workaround if pdfsharp doesn't support this pdf
sourceStream.Position = 0;
MemoryStream outputStream = new MemoryStream();
iTextSharp.text.pdf.PdfReader reader = new iTextSharp.text.pdf.PdfReader(sourceStream);
iTextSharp.text.pdf.PdfStamper pdfStamper = new iTextSharp.text.pdf.PdfStamper(reader, outputStream);
pdfStamper.FormFlattening = true;
pdfStamper.Writer.SetPdfVersion(iTextSharp.text.pdf.PdfWriter.PDF_VERSION_1_4);
pdfStamper.Writer.CloseStream = false;
pdfStamper.Close();
outDoc = PdfReader.Open(outputStream, openmode);
int count = outDoc.PageCount;
}
catch (Exception)
{
return(null);
}
}
return(outDoc);
}
/// <summary>
/// Opens an existing PDF document.
/// </summary>
public static PdfDocument Open(string path, string password, PdfDocumentOpenMode openmode, PdfPasswordProvider provider)
{
PdfDocument document;
Stream stream = new FileStream(path, FileMode.Open, FileAccess.Read);
try
{
document = PdfReader.Open(stream, password, openmode, provider);
if (document != null)
{
document.fullPath = Path.GetFullPath(path);
}
}
finally
{
if (stream != null)
{
stream.Close();
}
}
return(document);
}
public void MergePdfs(string[] inputs)
{
var outPdfDocument = new PdfDocument();
foreach (var pdf in inputs)
{
var inputDocument = PdfReader.Open(pdf, PdfDocumentOpenMode.Import);
outPdfDocument.Version = inputDocument.Version;
foreach (var page in inputDocument.Pages)
{
outPdfDocument.AddPage(page);
}
}
var name = "WTF.pdf";
outPdfDocument.Info.Creator = string.Empty;
outPdfDocument.Save($"{Environment.GetFolderPath(Environment.SpecialFolder.Desktop)}/lens.pdf");
Process.Start(name);
}
/// <summary>
/// permet de séparer les pages du document source
/// vers le répertoire temporaire
/// <param name="file">fichier source</param>
/// <param name="copy">true:copie false:déplace</param>
/// </summary>
public static void SplitPdf(string file, bool copy)
{
try
{
var srcDoc = file;
//ouverture du fichier
PdfSharpDocument inputDocument = PdfSharpReader.Open(srcDoc, PdfDocumentOpenMode.Import);
string name = Path.GetFileNameWithoutExtension(file);
if (inputDocument.PageCount > 1)
{
for (int idx = 0; idx < inputDocument.PageCount; idx++)
{
//nouveau document
PdfSharpDocument outputDocument = new PdfSharpDocument();
outputDocument.Version = inputDocument.Version;
outputDocument.Info.Title = $"Page {idx + 1} of {inputDocument.Info.Title}";
outputDocument.Info.Creator = inputDocument.Info.Creator;
//ajout de la page et sauvegarde
outputDocument.AddPage(inputDocument.Pages[idx]);
var temp = Path.Combine(ServiceCfg.TempFolder, Path.GetFileNameWithoutExtension(file));
CheckFolder(temp, true);
outputDocument.Save(Path.Combine(temp, $"{name}__p{idx + 1}.pdf"));
outputDocument.Close();
}
}
else
{
//nouveau document
PdfSharpDocument outputDocument = new PdfSharpDocument();
outputDocument.Version = inputDocument.Version;
outputDocument.Info.Title = inputDocument.Info.Title;
outputDocument.Info.Creator = inputDocument.Info.Creator;
//ajout de la page et sauvegarde
outputDocument.AddPage(inputDocument.Pages[0]);
var temp = Path.Combine(ServiceCfg.TempFolder, Path.GetFileNameWithoutExtension(file));
CheckFolder(temp, true);
outputDocument.Save(Path.Combine(temp, $"{name}.pdf"));
outputDocument.Close();
}
if (CheckFolder(ServiceCfg.OutputFolderPath, false))
{
var pathbckup = Path.Combine(ServiceCfg.OutputFolderPath, "original\\");
var filebck = Path.Combine(pathbckup, Path.GetFileName(file));
if (CheckFolder(pathbckup, true))
{
if (File.Exists(filebck))
{
filebck = Path.Combine(pathbckup, $"{Path.GetFileNameWithoutExtension(file)}_[ALT-{DateTime.Now.ToString("yyyyMMddHHmmss")}]{Path.GetExtension(file)}");
}
if (copy)
{
File.Copy(srcDoc, filebck);
}
else
{
File.Move(srcDoc, filebck);
}
//on garde le chemin du fichier d'origine
DataManager.SetDicoValue(LogTableParam.Source, filebck);
}
}
}
catch (Exception e)
{
ServiceCfg.Log.Error($"PdfManager.SplitPdf : {file}{Environment.NewLine}", e);
throw new Exception($"PdfManager.SplitPdf : {file}{Environment.NewLine}", e);
}
}
/// <summary>
/// Opens an existing PDF document.
/// </summary>
public static PdfDocument Open(Stream stream)
{
return(PdfReader.Open(stream, PdfDocumentOpenMode.Modify));
}
