/// <summary>
/// An item was updated.
/// </summary>
public override void ItemAdded(SPItemEventProperties properties)
{
try {
var requiresProcessing = false;
if (properties.ListItem[SPBuiltInFieldId.File_x0020_Type].ToString().ToUpper() == "PDF")
{
using (StreamReader sr = new StreamReader(properties.ListItem.File.OpenBinaryStream()))
{
string tempRead = sr.ReadLine();
if (tempRead == @"%PDF-1.3")
{
Util.LogError($"{properties.ListItem.File.Name} at {properties.WebUrl}/{properties.ListItem.Url} being updated because PDF version was ${tempRead}", Util.ErrorLevel.Info);
requiresProcessing = true;
}
}
if (requiresProcessing)
{
if (Util.InstantiateLicense(properties.Web))
{
// Read the entire file into a byte array
var binaryContent = properties.ListItem.File.OpenBinary();
// Increment the version number YAY Magic Numbers!!!
binaryContent[7]++;
// Read the bytes in as a stream to an Aspose PDF document
Aspose.Pdf.Document toBook = new Aspose.Pdf.Document(new MemoryStream(binaryContent));
// Reassess the metatable
toBook.ProcessParagraphs();
// Repair anything that the above line missed
toBook.Repair();
// Save out the new PDF to a stream
using (var ms = new MemoryStream())
{
toBook.Save(ms);
properties.ListItem.File.SaveBinary(ms);
}
}
}
}
}
catch (Exception ex)
{
Util.LogError($"PDF Version Correction for file {properties.WebUrl}/{properties.ListItem.Url}: {ex.Message}");
}
}