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import java.io.BufferedWriter;
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import java.io.File;
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import java.io.FileDescriptor;
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import java.io.FileOutputStream;
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import java.io.FileWriter;
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import java.io.IOException;
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import java.io.PrintStream;
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import java.util.HashMap;
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import java.util.List;
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import java.util.concurrent.Semaphore;
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import java.util.concurrent.atomic.AtomicBoolean;
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import java.util.concurrent.atomic.AtomicReference;
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import java.util.concurrent.locks.Lock;
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import java.util.concurrent.locks.ReentrantLock;
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import jdeserialize.content;
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import jdeserialize.jdeserialize;
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import io.Database.DB_Messenger;
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import io.Database;
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import io.FileWorker;
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public class Converter extends Thread {
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private IConversionResults ui;
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private AtomicBoolean active;
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// P-K without E semaphore.
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private Lock entryLock;
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private Semaphore inputAvailable;
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// Input.
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private File inputFile;
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private DB_Messenger query;
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public Converter(IConversionResults ui) {
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this.ui = ui;
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active = new AtomicBoolean(true);
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entryLock = new ReentrantLock();
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inputAvailable = new Semaphore(0);
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}
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public void end() {
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active.set(false);
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setInput(null, null);
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}
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public void setInput(File inputFile, DB_Messenger query) {
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entryLock.lock();
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this.inputFile = inputFile;
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this.query = query;
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entryLock.unlock();
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if (!inputAvailable.tryAcquire())
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inputAvailable.release(); // MAX VALUE = 1!
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}
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public boolean getInput(AtomicReference<File> inputFile, AtomicReference<DB_Messenger> query) {
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try {
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inputAvailable.acquire();
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} catch (InterruptedException e) {
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return false;
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}
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entryLock.lock();
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inputFile.set(this.inputFile);
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query.set(this.query);
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this.inputFile = null;
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this.query = null;
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entryLock.unlock();
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return inputFile.get() != null || query.get() != null;
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}
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@Override
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public void run() {
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super.run();
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while (active.get()) {
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AtomicReference<File> inputFile = new AtomicReference<File>();
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AtomicReference<DB_Messenger> query = new AtomicReference<DB_Messenger>();
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if (!getInput(inputFile, query)) {
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continue;
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}
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byte array[] = inputFile.get() != null ? getBytes(inputFile.get()) : getBytes(query.get());
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StringBuilder html = new StringBuilder();
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StringBuilder json = new StringBuilder();
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try {
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// Redirectovany system.out do null streamu. Mozno redirect do souboru
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System.setOut(FileWorker.createRedirectStream());
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convert(array, html, json);
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} catch (Exception e) {
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json.setLength(0);
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html.setLength(0);
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} finally {
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System.setOut(new PrintStream(new FileOutputStream(FileDescriptor.out)));
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}
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//test file output
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try {
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BufferedWriter writer = new BufferedWriter(new FileWriter("html.txt"));
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writer.write(html.toString().replace("<br/>", "\n")); // TODO pridan replace pro odsazovani - lepsi orientace v souboru.
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writer.close();
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BufferedWriter writer2 = new BufferedWriter(new FileWriter("json.txt"));
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writer2.write(json.toString());
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writer2.close();
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} catch (IOException e) {
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// TODO Auto-generated catch block
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e.printStackTrace();
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}
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//test file output
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ui.completed(html.toString(), json.toString(), array == null ? null : new String(array));
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}
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}
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private byte[] getBytes(File input) {
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byte array[];
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try {
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array = FileWorker.loadByteArray(input);
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} catch (IOException e) {
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ui.loadingInputFileError();
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return null;
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}
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return array;
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}
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private byte[] getBytes(DB_Messenger query) {
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return Database.getBlobBytes(query);
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}
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private void convert(byte[] buffer, StringBuilder html, StringBuilder json) throws Exception {
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jdeserialize deserializer = new jdeserialize(buffer);
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// gets the "contents" into an array - returnes the deserialization of all
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// 'writes' into serialized object via objectOutputStream
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List<content> cntnts = deserializer.getContent();
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for (content cnt : cntnts) {
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if (cnt != null) {
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// Parametrizovany toJson pomoci dictionary
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// Ciste HTML / Cisty JSON
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json.append(cnt.toJson("", null, false));
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html.append(cnt.toJson("", null, false));
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}
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}
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}
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}
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