import java.io.ByteArrayInputStream;
import java.io.Closeable;
import java.io.File;
-import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+import java.io.OutputStream;
+import java.io.Serializable;
+import be.nikiroo.utils.streams.Base64InputStream;
import be.nikiroo.utils.streams.MarkableFileInputStream;
/**
*
* @author niki
*/
-public class Image implements Closeable {
+public class Image implements Closeable, Serializable {
+ static private final long serialVersionUID = 1L;
+
static private File tempRoot;
static private TempFiles tmpRepository;
static private long count = 0;
static private Object lock = new Object();
+ private Object instanceLock = new Object();
private File data;
+ private long size;
/**
* Do not use -- for serialisation purposes only.
ByteArrayInputStream in = new ByteArrayInputStream(data);
try {
this.data = getTemporaryFile();
- IOUtils.write(in, this.data);
+ size = IOUtils.write(in, this.data);
} catch (IOException e) {
throw new RuntimeException(e);
} finally {
}
}
+ /**
+ * Create an image from Base64 encoded data.
+ *
+ * <p>
+ * Please use {@link Image#Image(InputStream)} when possible instead, with a
+ * {@link Base64InputStream}; it can be much more efficient.
+ *
+ * @param base64EncodedData
+ * the Base64 encoded data as a String
+ *
+ * @throws IOException
+ * in case of I/O error or badly formated Base64
+ */
+ public Image(String base64EncodedData) throws IOException {
+ this(new Base64InputStream(new ByteArrayInputStream(
+ StringUtils.getBytes(base64EncodedData)), false));
+ }
+
/**
* Create a new {@link Image} from a stream.
*
*/
public Image(InputStream in) throws IOException {
data = getTemporaryFile();
- IOUtils.write(in, data);
+ size = IOUtils.write(in, data);
+ }
+
+ /**
+ * The size of the enclosed image in bytes.
+ *
+ * @return the size
+ */
+ public long getSize() {
+ return size;
}
/**
* in case of I/O error
*/
public InputStream newInputStream() throws IOException {
- return new MarkableFileInputStream(new FileInputStream(data));
+ synchronized (instanceLock) {
+ if (data == null) {
+ throw new IOException("Image was close()d");
+ }
+
+ return new MarkableFileInputStream(data);
+ }
}
/**
* <b>Read</b> the actual image data, as a byte array.
- * <p>
- * Note: if possible, prefer the {@link Image#newInputStream()} method, as
- * it can be more efficient.
+ *
+ * @deprecated if possible, prefer the {@link Image#newInputStream()}
+ * method, as it can be more efficient
*
* @return the image data
*/
+ @Deprecated
public byte[] getData() {
try {
InputStream in = newInputStream();
}
}
+ /**
+ * Convert the given {@link Image} object into a Base64 representation of
+ * the same {@link Image} object.
+ *
+ * @deprecated Please use {@link Image#newInputStream()} instead, it is more
+ * efficient
+ *
+ * @return the Base64 representation
+ */
+ @Deprecated
+ public String toBase64() {
+ try {
+ Base64InputStream stream = new Base64InputStream(newInputStream(),
+ true);
+ try {
+ return IOUtils.readSmallStream(stream);
+ } finally {
+ stream.close();
+ }
+ } catch (IOException e) {
+ return null;
+ }
+ }
+
/**
* Closing the {@link Image} will delete the associated temporary file on
* disk.
*/
@Override
public void close() throws IOException {
- data.delete();
- synchronized (lock) {
- count--;
- if (count <= 0) {
- count = 0;
- tmpRepository.close();
- tmpRepository = null;
+ synchronized (instanceLock) {
+ new Exception().printStackTrace();
+ if (size >= 0) {
+ size = -1;
+ data.delete();
+ data = null;
+
+ synchronized (lock) {
+ count--;
+ if (count <= 0) {
+ count = 0;
+ tmpRepository.close();
+ tmpRepository = null;
+ }
+ }
}
}
}
}
}
+ /**
+ * Write this {@link Image} for serialization purposes; that is, write the
+ * content of the backing temporary file.
+ *
+ * @param out
+ * the {@link OutputStream} to write to
+ *
+ * @throws IOException
+ * in case of I/O error
+ */
+ private void writeObject(ObjectOutputStream out) throws IOException {
+ InputStream in = newInputStream();
+ try {
+ IOUtils.write(in, out);
+ } finally {
+ in.close();
+ }
+ }
+
+ /**
+ * Read an {@link Image} written by
+ * {@link Image#writeObject(java.io.ObjectOutputStream)}; that is, create a
+ * new temporary file with the saved content.
+ *
+ * @param in
+ * the {@link InputStream} to read from
+ * @throws IOException
+ * in case of I/O error
+ * @throws ClassNotFoundException
+ * will not be thrown by this method
+ */
+ @SuppressWarnings("unused")
+ private void readObject(ObjectInputStream in) throws IOException,
+ ClassNotFoundException {
+ data = getTemporaryFile();
+ IOUtils.write(in, data);
+ }
+
/**
* Change the temporary root directory used by the program.
* <p>
git://git.nikiroo.be / nikiroo-utils.git / blobdiff