ByteScout PDF Extractor SDK – C# – .NET Core 2.0 – Parallel Processing

ByteScout PDF Extractor SDK – C# – .NET Core 2.0 – Parallel Processing

Program.cs

using System;
using System.IO;
using System.Threading;
using Bytescout.PDFExtractor;

namespace ParallelProcessing
{
class Program
{
// Limit to 4 threads in queue.
// Set this value to number of your processor cores for max performance.
private static readonly Semaphore ThreadLimiter = new Semaphore(4, 4);

static void Main(string[] args)
{
// Get all PDF files in a folder
string[] files = Directory.GetFiles(@”..\..\..\..\..\”, “*.pdf”);
// Array of events to wait
ManualResetEvent[] doneEvents = new ManualResetEvent[files.Length];

for (int i = 0; i < files.Length; i++) { // Wait for the queue ThreadLimiter.WaitOne(); // Start thread with filename and event in params doneEvents[i] = new ManualResetEvent(false); object[] threadData = new object[] { files[i], doneEvents[i] }; ThreadPool.QueueUserWorkItem(ConvertPdfToTxt, threadData); } // Wait until all threads finish WaitHandle.WaitAll(doneEvents); Console.WriteLine(); Console.WriteLine("All is done."); Console.WriteLine(); Console.WriteLine("Press any key to exit..."); Console.ReadKey(); } private static void ConvertPdfToTxt(object state) { // Get filename and event from params string file = (string) ((object[]) state)[0]; ManualResetEvent doneEvent = (ManualResetEvent) ((object[]) state)[1]; string resultFileName = Path.GetFileName(file) + ".txt"; try { Console.WriteLine("Converting " + file); using (TextExtractor extractor = new TextExtractor("demo", "demo")) { extractor.LoadDocumentFromFile(file); extractor.SaveTextToFile(resultFileName); } Console.WriteLine("Finished " + resultFileName); } finally { // Signal the thread is finished doneEvent.Set(); // Release semaphore ThreadLimiter.Release(); } } } } [/csharp]

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