@Override
public InputStream createInputStream() throws IOException {
FileInputStream is = null;
try {
is = new FileInputStream(file);
ByteStreams.skipFully(is, offset);
return new LimitedInputStream(is, length);
} catch (IOException e) {
try {
if (is != null) {
long size = file.length();
throw new IOException(
"Error in reading " + this + " (actual file length " + size + ")", e);
}
} catch (IOException ignored) {
// ignore
} finally {
JavaUtils.closeQuietly(is);
}
throw new IOException("Error in opening " + this, e);
} catch (RuntimeException e) {
JavaUtils.closeQuietly(is);
throw e;
}
}
protected Payload doSlice(InputStream content, long offset, long length) {
try {
ByteStreams.skipFully(content, offset);
} catch (IOException ioe) {
throw Throwables.propagate(ioe);
}
return new InputStreamPayload(ByteStreams.limit(content, length));
}
private InputStream sliceStream(InputStream in) throws IOException {
if (offset > 0) {
try {
ByteStreams.skipFully(in, offset);
} catch (Throwable e) {
Closer closer = Closer.create();
closer.register(in);
try {
throw closer.rethrow(e);
} finally {
closer.close();
}
}
}
return ByteStreams.limit(in, length);
}