From 4a8b89ee05b25f2b2dd04ef9afcd7fc181b569bb Mon Sep 17 00:00:00 2001
From: Artyom Skrobov <artyom@eitanium.com>
Date: Mon, 14 Sep 2020 09:04:50 +0300
Subject: [PATCH] Please don't forget to delete tempTxtFiles

---
 .../tesseract4/AbstractTesseract4OcrEngine.cs | 23 +++++++++++++------
 1 file changed, 16 insertions(+), 7 deletions(-)

diff --git a/itext/itext.pdfocr.tesseract4/itext/pdfocr/tesseract4/AbstractTesseract4OcrEngine.cs b/itext/itext.pdfocr.tesseract4/itext/pdfocr/tesseract4/AbstractTesseract4OcrEngine.cs
index b9d9e25..f7f4405 100644
--- a/itext/itext.pdfocr.tesseract4/itext/pdfocr/tesseract4/AbstractTesseract4OcrEngine.cs
+++ b/itext/itext.pdfocr.tesseract4/itext/pdfocr/tesseract4/AbstractTesseract4OcrEngine.cs
@@ -426,15 +426,24 @@ private AbstractTesseract4OcrEngine.ITesseractOcrResult ProcessInputFiles(FileIn
                     DoTesseractOcr(input, tempFiles, outputFormat, page);
                     if (outputFormat.Equals(OutputFormat.HOCR)) {
                         IList<FileInfo> tempTxtFiles = null;
-                        if (GetTesseract4OcrEngineProperties().IsUseTxtToImproveHocrParsing()) {
-                            tempTxtFiles = new List<FileInfo>();
-                            for (int i = 0; i < numOfFiles; i++) {
-                                tempTxtFiles.Add(CreateTempFile(".txt"));
+                        IDictionary<int, IList<TextInfo>> pageData = null;
+                        try {
+                            if (GetTesseract4OcrEngineProperties().IsUseTxtToImproveHocrParsing()) {
+                                tempTxtFiles = new List<FileInfo>();
+                                for (int i = 0; i < numOfFiles; i++) {
+                                    tempTxtFiles.Add(CreateTempFile(".txt"));
+                                }
+                                DoTesseractOcr(input, tempTxtFiles, OutputFormat.TXT, page, false);
+                            }
+                            pageData = TesseractHelper.ParseHocrFile(tempFiles, tempTxtFiles, GetTesseract4OcrEngineProperties());
+                        }
+                        finally {
+                            if (tempTxtFiles != null) {
+                                foreach (FileInfo file in tempTxtFiles) {
+                                    TesseractHelper.DeleteFile(file.FullName);
+                                }
                             }
-                            DoTesseractOcr(input, tempTxtFiles, OutputFormat.TXT, page, false);
                         }
-                        IDictionary<int, IList<TextInfo>> pageData = TesseractHelper.ParseHocrFile(tempFiles, tempTxtFiles, GetTesseract4OcrEngineProperties
-                            ());
                         if (GetTesseract4OcrEngineProperties().IsPreprocessingImages()) {
                             imageData.Put(page, pageData.Get(1));
                         }