/// <summary>
/// Get the informations from the pdf file
/// </summary>
/// <param name="pdfFilePath">Path of the pdf file to get information from</param>
private void LoadInfo(string pdfFilePath)
{
PDFFileInfo info = PDFActions.GetPDFFileInfo(pdfFilePath);
this.NumberOfPages = info.NumberOfPages;
this.PageLabelStart = info.PageLabelStart;
this.PageRanges = new List <string>();
this.HasInfo = true;
if (this.NumberOfPages == 0)
{
this.HasInfo = false;
}
}
/// <summary>
/// Gets informations about the pdf file specified by <paramref name="path"/>
/// using the "dump_data" function of pdftk.
/// </summary>
/// <param name="path">Full path of the file that you want to get information from.</param>
/// <returns>PDFFileInfo object storing basic information about PDF document.</returns>
public static PDFFileInfo GetPDFFileInfo(string path)
{
PDFFileInfo info = new PDFFileInfo();
//Creates a process for pdftk and sets its parameters.
Process p = new Process();
//Handles possible errors of pdftk.
try
{
p.StartInfo.FileName = "pdftk.exe";
p.StartInfo.WorkingDirectory = BASE_DIR;
p.StartInfo.CreateNoWindow = true;
p.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
//Sets pdftk command line arguments.
//You must use quotation marks to specify command line arguments that have
//spaces inside them, or they will be considered as different arguments.
p.StartInfo.Arguments = "\"" + path + "\" dump_data output \"" + DUMP_DATA_FILE + "\" dont_ask";
p.Start();
p.WaitForExit();
//Console.WriteLine("pdftk exit code: " + p.ExitCode.ToString());
p.Close();
if (File.Exists(DUMP_DATA_FILE))
{
info.FullName = path;
//Searches the informations inside pdftk dump_data file.
using (StreamReader sr = new StreamReader(DUMP_DATA_FILE))
{
String line;
while ((line = sr.ReadLine()) != null)
{
if (line.StartsWith("NumberOfPages"))
{
info.NumberOfPages = short.Parse(line.Remove(0, 15));
}
if (line.StartsWith("PageLabelStart"))
{
info.PageLabelStart = short.Parse(line.Remove(0, 16));
}
}
}
// PageLabelStart is used to get the effective number of pages,
// so it must be greater than 0
if (info.PageLabelStart == 0)
info.PageLabelStart = 1;
}
}
catch
{
}
finally
{
if (File.Exists(DUMP_DATA_FILE))
File.Delete(DUMP_DATA_FILE);
}
return info;
}
