static void Main(string[] args)
{
// Parse the arguments
//TESTING: Arg1 = PDF A, Arg2 = PDF B, Arg3 = Join String, Arg4 = Output document
if (args.Length != 4)
{
Console.WriteLine("Incorrect number of arguments provided.");
Console.WriteLine("Usage: pdfjoiner <pdf1> <pdf2> <joinString> <outputPdf>");
Environment.Exit(1);
}
string pdfPath1 = args[0];
string pdfPath2 = args[1];
string joinString = args[2];
string outputPath = args[3];
if (!Path.HasExtension(outputPath))
{
outputPath += ".pdf";
Console.WriteLine($"Extension not provided in the output file path. Changed to '{outputPath}'");
}
try
{
var documentSegments = joinString.Split(",").Aggregate(new List <DocumentSegmentModel>(), (segmentList, nextSegment) =>
{
string pdfPath = string.Empty;
int startIndex = 0;
int endIndex = 0;
if (nextSegment[0] == 'A')
{
pdfPath = pdfPath1;
}
else if (nextSegment[0] == 'B')
{
pdfPath = pdfPath2;
}
else
{
throw new System.ArgumentException($"A letter other than A or B was provided to the joinString in the segment '{nextSegment}'.");
}
var document = new DocumentModel(pdfPath);
var pageRangeString = nextSegment.Substring(1);
if (pageRangeString == string.Empty)
{
startIndex = 0;
endIndex = document.LastPageIndex;
}
else
{
var pageRanges = pageRangeString.Split("-");
if (pageRanges[0] == "")
{
startIndex = 0;
}
else
{
if (!int.TryParse(pageRanges[0], out startIndex))
{
throw new System.ArgumentException($"An invalid page number '{pageRanges[0]}' was provided in the segment '{nextSegment}'");
}
if (startIndex < 0)
{
throw new System.ArgumentException($"The start index of the range '{pageRangeString}' in the segment '{nextSegment}' is less than 0.");
}
if (startIndex > document.LastPageIndex)
{
throw new System.ArgumentException($"The start index of the range '{pageRangeString}' in the segment '{nextSegment}' is greater than the maximum for the document '{document.LastPageIndex}'");
}
}
if (pageRanges.Length == 1)
{
endIndex = startIndex;
}
else if (pageRanges[1] == "")
{
endIndex = document.LastPageIndex;
}
else
{
if (!int.TryParse(pageRanges[1], out endIndex))
{
throw new System.ArgumentException($"An invalid page number '{pageRanges[1]}' was provided in the segment '{nextSegment}'");
}
if (endIndex > document.LastPageIndex)
{
throw new System.ArgumentException($"The end index of the range '{pageRangeString}' in the segment '{nextSegment}' is greater than the maximum for the document '{document.LastPageIndex}'");
}
if (endIndex < startIndex)
{
throw new System.ArgumentException($"The end index of the range '{pageRangeString}' in the segment '{nextSegment}' is less than the start index.");
}
}
}
segmentList.Add(new DocumentSegmentModel(document, startIndex, endIndex));
return(segmentList);
});
var pdfGenerator = new PdfGenerator(documentSegments);
pdfGenerator.GenerateDocumentToFile(outputPath);
Console.WriteLine($"Document Generated. See {outputPath}");
}
catch (System.IO.FileNotFoundException e)
{
Console.WriteLine($"{e.Message}");
}
catch (System.ArgumentException e)
{
Console.WriteLine($"{e.Message}");
}
}