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package bjc.rgens.parser;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.PrintStream;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import bjc.utils.funcutils.ListUtils;
import bjc.utils.gen.WeightedGrammar;
import bjc.utils.gui.SimpleDialogs;
import bjc.utils.gui.awt.SimpleFileDialog;
/**
* App that reads a grammar from a file and generates results
*
* @author ben
*
*/
public class GrammarReaderApp {
/**
* Main method of class
*
* @param args
* CLI args
*/
public static void main(String[] args) {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException
| InstantiationException
| IllegalAccessException
| UnsupportedLookAndFeelException e) {
e.printStackTrace();
System.exit(1);
}
doSingleFile();
}
private static void doSingleFile() {
File gramFile = SimpleFileDialog.getOpenFile(null, "Choose Grammar File", ".gram");
WeightedGrammar<String> grammar = null;
try {
grammar = RBGrammarReader.fromPath(gramFile.toPath());
} catch (IOException ioex) {
ioex.printStackTrace();
System.exit(1);
}
String initRule = "";
if (!grammar.hasInitialRule()) {
grammar.getRuleNames().sort((leftString, rightString) -> {
return leftString.compareTo(rightString);
});
initRule = SimpleDialogs.getChoice(null,
"Pick a initial rule",
"Pick a initial rule to generate choices from",
grammar.getRuleNames().toArray(new String[0]));
} else {
initRule = grammar.getInitialRule();
}
int count = SimpleDialogs.getWhole(null,
"Enter number of repetitions",
"Enter the number of items to generate from the rule");
File outputFile = SimpleFileDialog.getSaveFile(null, "Choose Grammar File");
PrintStream outputStream = null;
try {
outputStream = new PrintStream(outputFile);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
for (int i = 0; i < count; i++) {
String ruleResult = ListUtils.collapseTokens(grammar.generateListValues(initRule, " "));
outputStream.println(ruleResult.replaceAll("\\s+", " "));
}
outputStream.close();
}
}
|
