/** LSB first. Labels may be null, a String, or a String[2] with (low label,high label) values. */
@Nullable
protected String getBitFlagDescription(final int tagType, @NotNull final Object... labels) {
Integer value = _directory.getInteger(tagType);
if (value == null) return null;
List<String> parts = new ArrayList<String>();
int bitIndex = 0;
while (labels.length > bitIndex) {
Object labelObj = labels[bitIndex];
if (labelObj != null) {
boolean isBitSet = (value & 1) == 1;
if (labelObj instanceof String[]) {
String[] labelPair = (String[]) labelObj;
assert (labelPair.length == 2);
parts.add(labelPair[isBitSet ? 1 : 0]);
} else if (isBitSet && labelObj instanceof String) {
parts.add((String) labelObj);
}
}
value >>= 1;
bitIndex++;
}
return StringUtil.join(parts, ", ");
}
/**
* An application entry point. Takes the name of one or more files as arguments and prints the
* contents of all metadata directories to <code>System.out</code>.
*
* <p>If <code>-thumb</code> is passed, then any thumbnail data will be written to a file with
* name of the input file having <code>.thumb.jpg</code> appended.
*
* <p>If <code>-markdown</code> is passed, then output will be in markdown format.
*
* <p>If <code>-hex</code> is passed, then the ID of each tag will be displayed in hexadecimal.
*
* @param args the command line arguments
*/
public static void main(@NotNull String[] args) throws MetadataException, IOException {
Collection<String> argList = new ArrayList<String>(Arrays.asList(args));
boolean thumbRequested = argList.remove("-thumb");
boolean markdownFormat = argList.remove("-markdown");
boolean showHex = argList.remove("-hex");
if (argList.size() < 1) {
String version = ImageMetadataReader.class.getPackage().getImplementationVersion();
System.out.println("metadata-extractor version " + version);
System.out.println();
System.out.println(
String.format(
"Usage: java -jar metadata-extractor-%s.jar <filename> [<filename>] [-thumb] [-markdown] [-hex]",
version == null ? "a.b.c" : version));
System.exit(1);
}
for (String filePath : argList) {
long startTime = System.nanoTime();
File file = new File(filePath);
if (!markdownFormat && argList.size() > 1)
System.out.printf("\n***** PROCESSING: %s\n%n", filePath);
Metadata metadata = null;
try {
metadata = ImageMetadataReader.readMetadata(file);
} catch (Exception e) {
e.printStackTrace(System.err);
System.exit(1);
}
long took = System.nanoTime() - startTime;
if (!markdownFormat)
System.out.printf(
"Processed %.3f MB file in %.2f ms%n%n",
file.length() / (1024d * 1024), took / 1000000d);
if (markdownFormat) {
String fileName = file.getName();
String urlName = StringUtil.urlEncode(filePath);
ExifIFD0Directory exifIFD0Directory =
metadata.getFirstDirectoryOfType(ExifIFD0Directory.class);
String make =
exifIFD0Directory == null
? ""
: exifIFD0Directory.getString(ExifIFD0Directory.TAG_MAKE);
String model =
exifIFD0Directory == null
? ""
: exifIFD0Directory.getString(ExifIFD0Directory.TAG_MODEL);
System.out.println();
System.out.println("---");
System.out.println();
System.out.printf("# %s - %s%n", make, model);
System.out.println();
System.out.printf(
"<a href=\"https://raw.githubusercontent.com/drewnoakes/metadata-extractor-images/master/%s\">%n",
urlName);
System.out.printf(
"<img src=\"https://raw.githubusercontent.com/drewnoakes/metadata-extractor-images/master/%s\" width=\"300\"/><br/>%n",
urlName);
System.out.println(fileName);
System.out.println("</a>");
System.out.println();
System.out.println("Directory | Tag Id | Tag Name | Extracted Value");
System.out.println(":--------:|-------:|----------|----------------");
}
// iterate over the metadata and print to System.out
for (Directory directory : metadata.getDirectories()) {
String directoryName = directory.getName();
for (Tag tag : directory.getTags()) {
String tagName = tag.getTagName();
String description = tag.getDescription();
// truncate the description if it's too long
if (description != null && description.length() > 1024) {
description = description.substring(0, 1024) + "...";
}
if (markdownFormat) {
System.out.printf(
"%s|0x%s|%s|%s%n",
directoryName, Integer.toHexString(tag.getTagType()), tagName, description);
} else {
// simple formatting
if (showHex) {
System.out.printf(
"[%s - %s] %s = %s%n", directoryName, tag.getTagTypeHex(), tagName, description);
} else {
System.out.printf("[%s] %s = %s%n", directoryName, tagName, description);
}
}
}
// print out any errors
for (String error : directory.getErrors()) System.err.println("ERROR: " + error);
}
if (args.length > 1 && thumbRequested) {
ExifThumbnailDirectory directory =
metadata.getFirstDirectoryOfType(ExifThumbnailDirectory.class);
if (directory != null && directory.hasThumbnailData()) {
System.out.println("Writing thumbnail...");
directory.writeThumbnail(args[0].trim() + ".thumb.jpg");
} else {
System.out.println("No thumbnail data exists in this image");
}
}
}
}