Use ImageTypeDetector's stream overload

DEVSIX-5172

Author: ars18wrw

pdfocr-api/src/main/java/com/itextpdf/pdfocr/OcrPdfCreator.java

@@ -373,36 +373,30 @@ private void addDataToPdfDocument(
             final boolean createPdfA3u) throws OcrException {
         for (Map.Entry<File, Map<Integer, List<TextInfo>>> entry
                 : imagesTextData.entrySet()) {
-            try {
-                File inputImage = entry.getKey();
-                List<ImageData> imageDataList =
-                        PdfCreatorUtil.getImageData(inputImage,
-                                ocrPdfCreatorProperties.getImageRotationHandler());
-                LOGGER.info(MessageFormatUtil.format(
-                        PdfOcrLogMessageConstant.NUMBER_OF_PAGES_IN_IMAGE,
-                        inputImage.toString(), imageDataList.size()));
-
-                Map<Integer, List<TextInfo>> imageTextData = entry.getValue();
-                if (imageTextData.keySet().size() > 0) {
-                    for (int page = 0; page < imageDataList.size(); ++page) {
-                        ImageData imageData = imageDataList.get(page);
-                        final Rectangle imageSize =
-                                PdfCreatorUtil.calculateImageSize(
-                                        imageData,
-                                        ocrPdfCreatorProperties.getScaleMode(),
-                                        ocrPdfCreatorProperties.getPageSize());
-
-                        if (imageTextData.containsKey(page + 1)) {
-                            addToCanvas(pdfDocument, imageSize,
-                                    imageTextData.get(page + 1),
-                                    imageData, createPdfA3u);
-                        }
+            File inputImage = entry.getKey();
+            List<ImageData> imageDataList =
+                    PdfCreatorUtil.getImageData(inputImage,
+                            ocrPdfCreatorProperties.getImageRotationHandler());
+            LOGGER.info(MessageFormatUtil.format(
+                    PdfOcrLogMessageConstant.NUMBER_OF_PAGES_IN_IMAGE,
+                    inputImage.toString(), imageDataList.size()));
+
+            Map<Integer, List<TextInfo>> imageTextData = entry.getValue();
+            if (imageTextData.keySet().size() > 0) {
+                for (int page = 0; page < imageDataList.size(); ++page) {
+                    ImageData imageData = imageDataList.get(page);
+                    final Rectangle imageSize =
+                            PdfCreatorUtil.calculateImageSize(
+                                    imageData,
+                                    ocrPdfCreatorProperties.getScaleMode(),
+                                    ocrPdfCreatorProperties.getPageSize());
+
+                    if (imageTextData.containsKey(page + 1)) {
+                        addToCanvas(pdfDocument, imageSize,
+                                imageTextData.get(page + 1),
+                                imageData, createPdfA3u);
                     }
                 }
-            } catch (IOException e) {
-                LOGGER.error(MessageFormatUtil.format(
-                        PdfOcrLogMessageConstant.CANNOT_ADD_DATA_TO_PDF_DOCUMENT,
-                        e.getMessage()));
             }
         }
     }

pdfocr-api/src/main/java/com/itextpdf/pdfocr/PdfCreatorUtil.java

@@ -41,7 +41,10 @@ This file is part of the iText (R) project.
 import com.itextpdf.layout.renderer.ParagraphRenderer;
 
 import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
 import java.io.IOException;
+import java.io.InputStream;
 import java.nio.file.Files;
 import java.util.ArrayList;
 import java.util.List;
@@ -172,11 +175,11 @@ static com.itextpdf.kernel.geom.Point calculateImageCoordinates(
      * @throws IOException if error occurred during reading a file
      */
     static List<ImageData> getImageData(final File inputImage, IImageRotationHandler imageRotationHandler)
-            throws OcrException, IOException {
+            throws OcrException {
         List<ImageData> images = new ArrayList<ImageData>();
 
-        try {
-            ImageType imageType = ImageTypeDetector.detectImageType(UrlUtil.toURL(inputImage.getAbsolutePath()));
+        try (InputStream imageStream = new FileInputStream(inputImage)) {
+            ImageType imageType = ImageTypeDetector.detectImageType(imageStream);
             if (ImageType.TIFF == imageType) {
                 int tiffPages = getNumberOfPageTiff(inputImage);
 
@@ -198,7 +201,7 @@ static List<ImageData> getImageData(final File inputImage, IImageRotationHandler
                 }
                 images.add(imageData);
             }
-        } catch (com.itextpdf.io.IOException e) {
+        } catch (IOException | com.itextpdf.io.IOException e) {
             LOGGER.error(MessageFormatUtil.format(
                     PdfOcrLogMessageConstant.CANNOT_READ_INPUT_IMAGE,
                     e.getMessage()));