ImgUtils.java

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package pro.verron.officestamper.utils.image;
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import org.docx4j.openpackaging.contenttype.ContentTypes;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import pro.verron.officestamper.utils.UtilsException;
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import javax.imageio.ImageIO;
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import java.awt.*;
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import java.io.ByteArrayInputStream;
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import java.io.IOException;
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import java.util.HashMap;
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import java.util.Optional;
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import static java.util.Optional.ofNullable;
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/// Utility class for image-related operations such as format detection and
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/// content type mapping.
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public class ImgUtils {
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    private static final Logger log = LoggerFactory.getLogger(ImgUtils.class);
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    private ImgUtils() {throw new IllegalStateException("Utility class");}
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    /// Detects the format and dimensions of an image from its byte content.
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    ///
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    /// @param bytes the byte content of the image
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    ///
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    /// @return an [Optional] containing the detected [ImgFormat], or empty if
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    /// no reader is found
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    ///
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    /// @throws UtilsException if an I/O error occurs during format detection
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    public static Optional<ImgFormat> detectFormat(byte[] bytes) {
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        var inputStream = new ByteArrayInputStream(bytes);
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        try (
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                var imageInputStream = ImageIO.createImageInputStream(
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                        inputStream)
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        ) {
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            var readers = ImageIO.getImageReaders(imageInputStream);
40 1 1. detectFormat : negated conditional → NO_COVERAGE
 
            if (!readers.hasNext()) {
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                log.debug("Could not find an image reader for this file");
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                return Optional.empty();
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            }
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            var reader = readers.next();
45 1 1. detectFormat : removed call to javax/imageio/ImageReader::setInput → NO_COVERAGE
 
            reader.setInput(imageInputStream, false, false);
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            var formatName = reader.getFormatName();
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            var width = reader.getWidth(0);
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            var height = reader.getHeight(0);
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            var imgFormat = new ImgFormat(formatName,
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                    new Dimension(width, height));
51 1 1. detectFormat : removed call to javax/imageio/ImageReader::dispose → NO_COVERAGE
 
            reader.dispose();
52 1 1. detectFormat : replaced return value with Optional.empty for pro/verron/officestamper/utils/image/ImgUtils::detectFormat → NO_COVERAGE
 
            return Optional.of(imgFormat);
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        } catch (IOException e) {
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            throw new UtilsException(e);
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        }
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    }
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    /// Returns the MIME content type for a given image type string.
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    ///
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    /// Supported types include: emf, svg, wmf, tif, png, jpeg, gif, bmp.
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    ///
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    /// @param imageType the image type string (case-insensitive)
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    ///
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    /// @return an [Optional] containing the MIME content type, or empty if the
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    /// type is not supported
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    public static Optional<String> supportedType(String imageType) {
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        var supportedImageTypes = new HashMap<String, String>();
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        supportedImageTypes.put("emf", ContentTypes.IMAGE_EMF);
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        supportedImageTypes.put("svg", ContentTypes.IMAGE_SVG);
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        supportedImageTypes.put("wmf", ContentTypes.IMAGE_WMF);
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        supportedImageTypes.put("tif", ContentTypes.IMAGE_TIFF);
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        supportedImageTypes.put("png", ContentTypes.IMAGE_PNG);
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        supportedImageTypes.put("jpeg", ContentTypes.IMAGE_JPEG);
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        supportedImageTypes.put("gif", ContentTypes.IMAGE_GIF);
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        supportedImageTypes.put("bmp", ContentTypes.IMAGE_BMP);
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        var normalizedType = imageType.toLowerCase();
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        var mimeType = supportedImageTypes.get(normalizedType);
79 1 1. supportedType : replaced return value with Optional.empty for pro/verron/officestamper/utils/image/ImgUtils::supportedType → NO_COVERAGE
 
        return ofNullable(mimeType);
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    }
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}

Mutations

40

1.1
Location : detectFormat
Killed by : none negated conditional → NO_COVERAGE

45

1.1
Location : detectFormat
Killed by : none removed call to javax/imageio/ImageReader::setInput → NO_COVERAGE

51

1.1
Location : detectFormat
Killed by : none removed call to javax/imageio/ImageReader::dispose → NO_COVERAGE

52

1.1
Location : detectFormat
Killed by : none replaced return value with Optional.empty for pro/verron/officestamper/utils/image/ImgUtils::detectFormat → NO_COVERAGE

79

1.1
Location : supportedType
Killed by : none replaced return value with Optional.empty for pro/verron/officestamper/utils/image/ImgUtils::supportedType → NO_COVERAGE

Active mutators

Tests examined


Report generated by PIT 1.25.5 support