kske/chess
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Added a PGN file saving routine

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+ showFileSaveDialog in DialogUtil
+ Javadoc in Log and PGNDatabase
+ "Save game file" button in MenuBar
+ saveFile method in MainWindow
+ Formatting and result tag in PGNGame tag pair serialization
This commit is contained in:
Kai S. K. Engelbart 2019-11-08 15:22:12 +01:00
parent 12f6f7f0ef
commit cf5b507f00
6 changed files with 100 additions and 23 deletions
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20
src/dev/kske/chess/board/Log.java
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@ -49,6 +49,11 @@ public class Log implements Iterable<MoveNode> {
}
}
/**
* @return an iterator over all {@link MoveNode} objects that are either the
* root node or a first variation of another node, starting from the
* root node
*/
@Override
public Iterator<MoveNode> iterator() {
return new Iterator<MoveNode>() {
@ -98,7 +103,7 @@ public class Log implements Iterable<MoveNode> {
}
/**
* Removed the last move from the log and adjusts its state to the previous
* Removes the last move from the log and adjusts its state to the previous
* move.
*/
public void removeLast() {
@ -165,6 +170,10 @@ public class Log implements Iterable<MoveNode> {
}
}
/**
* Sets the active color, castling rights, en passant target square, fullmove
* number and halfmove clock to those of the current {@link MoveNode}.
*/
private void update() {
activeColor = current.activeColor;
castlingRights = current.castlingRights.clone();
@ -173,6 +182,15 @@ public class Log implements Iterable<MoveNode> {
halfmoveClock = current.halfmoveClock;
}
/**
* Removed the castling rights bound to a rook or king for the rest of the game.
* This method should be called once the piece has been moved, as a castling
* move involving this piece is forbidden afterwards.
*
* @param piece the rook or king to disable the castling rights for
* @param initialPosition the initial position of the piece during the start of
* the game
*/
private void disableCastlingRights(Piece piece, Position initialPosition) {
// Kingside
if (piece instanceof King || piece instanceof Rook && initialPosition.x == 7)

20
src/dev/kske/chess/pgn/PGNDatabase.java
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@ -2,6 +2,7 @@ package dev.kske.chess.pgn;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;
@ -13,6 +14,9 @@ import dev.kske.chess.exception.ChessException;
* Project: <strong>Chess</strong><br>
* File: <strong>PGNDatabase.java</strong><br>
* Created: <strong>4 Oct 2019</strong><br>
* <br>
* Contains a series of {@link PGNGame} objects that can be stored inside a PGN
* file.
*
* @since Chess v0.5-alpha
* @author Kai S. K. Engelbart
@ -21,6 +25,13 @@ public class PGNDatabase {
private final List<PGNGame> games = new ArrayList<>();
/**
* Loads PGN games from a file.
*
* @param pgnFile the file to load the games from
* @throws FileNotFoundException if the specified file is not found
* @throws ChessException if an error occurs while parsing the file
*/
public void load(File pgnFile) throws FileNotFoundException, ChessException {
Scanner sc = new Scanner(pgnFile);
while (sc.hasNext())
@ -28,7 +39,14 @@ public class PGNDatabase {
sc.close();
}
public void save(File pgnFile) throws FileNotFoundException {
/**
* Saves PGN games to a file.
*
* @param pgnFile the file to save the games to.
* @throws IOException if the file could not be created
*/
public void save(File pgnFile) throws IOException {
pgnFile.getParentFile().mkdirs();
PrintWriter pw = new PrintWriter(pgnFile);
games.forEach(g -> g.writePGN(pw));
pw.close();

18
src/dev/kske/chess/pgn/PGNGame.java
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@ -23,7 +23,11 @@ import dev.kske.chess.exception.ChessException;
public class PGNGame {
private final Map<String, String> tagPairs = new HashMap<>(7);
private final Board board = new Board();
private final Board board;
public PGNGame() { board = new Board(); }
public PGNGame(Board board) { this.board = board; }
public static PGNGame parse(Scanner sc) throws ChessException {
PGNGame game = new PGNGame();
@ -65,17 +69,23 @@ public class PGNGame {
}
public void writePGN(PrintWriter pw) {
// Set the unknown result tag if no result tag is specified
tagPairs.putIfAbsent("Result", "*");
// Write tag pairs
tagPairs.forEach((k, v) -> pw.printf("[%s \"%s\"]%n", k, v));
// Insert newline if tags were printed
if (!tagPairs.isEmpty()) pw.println();
// Write movetext
board.getLog().forEach(m -> {
if (m.activeColor == Color.BLACK) pw.printf("%d. ", m.fullmoveCounter);
pw.print(m.move); // TODO: Convert to SAN
pw.printf("%s ", m.move); // TODO: Convert to SAN
});
// TODO: Write game termination marker
// TODO: Check if the game has ended
// Write game termination marker
pw.print(tagPairs.get("Result"));
}
public String getTag(String tagName) { return tagPairs.get(tagName); }

30
src/dev/kske/chess/ui/DialogUtil.java
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@ -5,6 +5,7 @@ import java.awt.Font;
import java.io.File;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import java.util.function.BiConsumer;
import java.util.function.Consumer;
@ -15,7 +16,7 @@ import javax.swing.JFileChooser;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.filechooser.FileFilter;
import javax.swing.filechooser.FileNameExtensionFilter;
import dev.kske.chess.io.EngineUtil;
@ -31,27 +32,24 @@ public class DialogUtil {
private DialogUtil() {}
public static void showFileSelectionDialog(Component parent, Consumer<List<File>> action) {
public static void showFileSelectionDialog(Component parent, Consumer<List<File>> action, Collection<FileNameExtensionFilter> filters) {
JFileChooser fileChooser = new JFileChooser();
fileChooser.setCurrentDirectory(new File(System.getProperty("user.home")));
fileChooser.setAcceptAllFileFilterUsed(false);
fileChooser.addChoosableFileFilter(new FileFilter() {
@Override
public boolean accept(File f) {
int dotIndex = f.getName().lastIndexOf('.');
if (dotIndex >= 0) {
String extension = f.getName().substring(dotIndex).toLowerCase();
return extension.equals(".fen") || extension.equals(".pgn");
} else return f.isDirectory();
}
@Override
public String getDescription() { return "FEN and PGN files"; }
});
filters.forEach(fileChooser::addChoosableFileFilter);
if (fileChooser.showOpenDialog(parent) == JFileChooser.APPROVE_OPTION) action.accept(Arrays.asList(fileChooser.getSelectedFile()));
}
public static void showFileSaveDialog(Component parent, Consumer<File> action, Collection<FileNameExtensionFilter> filters) {
JFileChooser fileChooser = new JFileChooser();
fileChooser.setCurrentDirectory(new File(System.getProperty("user.home")));
fileChooser.setAcceptAllFileFilterUsed(false);
filters.forEach(fileChooser::addChoosableFileFilter);
if (fileChooser.showSaveDialog(parent) == JFileChooser.APPROVE_OPTION) action.accept(
new File(fileChooser.getSelectedFile().getAbsolutePath() + "."
+ ((FileNameExtensionFilter) fileChooser.getFileFilter()).getExtensions()[0]));
}
public static void showGameConfigurationDialog(Component parent, BiConsumer<String, String> action) {
JPanel dialogPanel = new JPanel();

22
src/dev/kske/chess/ui/MainWindow.java
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@ -4,6 +4,7 @@ import java.awt.EventQueue;
import java.awt.Toolkit;
import java.awt.dnd.DropTarget;
import java.io.File;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.util.List;
@ -164,4 +165,25 @@ public class MainWindow extends JFrame {
}
});
}
public void saveFile(File file) {
final int dotIndex = file.getName().lastIndexOf('.');
final String name = file.getName().substring(0, dotIndex);
final String extension = file.getName().substring(dotIndex).toLowerCase();
if (extension.equals(".pgn")) try {
PGNGame pgnGame = new PGNGame(getSelectedGamePane().getGame().getBoard());
pgnGame.setTag("Event", tabbedPane.getTitleAt(tabbedPane.getSelectedIndex()));
pgnGame.setTag("Result", "*");
PGNDatabase pgnDB = new PGNDatabase();
pgnDB.getGames().add(pgnGame);
pgnDB.save(file);
} catch (IOException e) {
e.printStackTrace();
JOptionPane.showMessageDialog(this,
"Failed to save the file " + file.getName() + ": " + e.toString(),
"File saving error",
JOptionPane.ERROR_MESSAGE);
}
}
}

13
src/dev/kske/chess/ui/MenuBar.java
View File

@ -2,11 +2,13 @@ package dev.kske.chess.ui;
import java.awt.Toolkit;
import java.awt.datatransfer.StringSelection;
import java.util.Arrays;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.filechooser.FileNameExtensionFilter;
import dev.kske.chess.board.FENString;
import dev.kske.chess.exception.ChessException;
@ -48,9 +50,18 @@ public class MenuBar extends JMenuBar {
gameMenu.add(newGameMenuItem);
JMenuItem loadFileMenu = new JMenuItem("Load game file");
loadFileMenu.addActionListener((evt) -> DialogUtil.showFileSelectionDialog(mainWindow, mainWindow::loadFiles));
loadFileMenu.addActionListener((evt) -> DialogUtil
.showFileSelectionDialog(mainWindow,
mainWindow::loadFiles,
Arrays.asList(new FileNameExtensionFilter("FEN and PGN files", "fen", "pgn"))));
gameMenu.add(loadFileMenu);
JMenuItem saveFileMenu = new JMenuItem("Save game file");
saveFileMenu
.addActionListener((evt) -> DialogUtil
.showFileSaveDialog(mainWindow, mainWindow::saveFile, Arrays.asList(new FileNameExtensionFilter("PGN file", "pgn"))));
gameMenu.add(saveFileMenu);
add(gameMenu);
newGameMenuItem.doClick();
}