Modified how the command works

Added options:
-s, --show-states    Show all states of the finite state machine
-p, --optimize-csv   Optimize CSV file by removing ERROR actions

README.md

@@ -7,12 +7,17 @@ Java program that takes a grammar as an input and gives a table as an output.
 You will need Java to be installed in order to use the program.
 
 To run this program on a grammar file, you first need to compile it with `build` for Windows or `sh build.sh` for Linux.
-Then you can use the command `g2t <file>` for Windows or `sh g2t.sh <file>` for Linux.
+Then you can use the command `g2t <file> [options]` for Windows or `sh g2t.sh <file> [options]` for Linux.
 
 Terminals and non-terminals are automatically determined. They can be any symbol apart from the end of file symbol `$`
 Non-alphanumerical symbols are automatically determined to be terminals, and they are always separated.
 Empty words (epsilon) are written as `^`
 
+### Options
+
+- `-s, --show-states`: Shows all states of the finite state machine
+- `-p, --optimize-csv`: Optimizes CSV file by removing ERROR actions
+
 ## Syntax
 
 ```

g2t.bat

@@ -1,3 +1,2 @@
 @echo off
-set arg1=%1
-java -cp ./bin fr.senesi.g2t.Grammar2Table %arg1%
+java -cp ./bin fr.senesi.g2t.Grammar2Table %*

g2t.sh

@@ -1 +1 @@
-java -cp ./bin fr.senesi.g2t.Grammar2Table $1
+java -cp ./bin fr.senesi.g2t.Grammar2Table $@

src/fr/senesi/g2t/Grammar2Table.java

@@ -10,15 +10,28 @@
 import fr.senesi.g2t.tokenizer.Tokenizer;
 
 public class Grammar2Table {
-	public static final String VERSION = "2.0.0";
+	public static final String VERSION = "2.1.0";
 
 	public static void main(String[] args) {
-		if (args.length != 1) {
+		if (args.length == 0) {
+			args = new String[]{"help"};
+		}
+
+		if (args[0].equals("help") || args[0].equals("?")) {
 			System.out.println("Grammar2Table v" + VERSION);
-			System.out.println("Please input a file name");
+			System.out.println("Usage: g2t <file> [options]");
+			System.out.println("Options:");
+			System.out.println("  -s, --show-states    Show all states of the finite state machine");
+			System.out.println("  -p, --optimize-csv   Optimize CSV file by removing ERROR actions");
 			System.exit(0);
 		}
 
+		boolean showStates = false, optimizeCSV = false;
+		for (int i = 1; i < args.length; i++) {
+			if (args[i].equals("--show-states") || args[i].equals("-s")) showStates = true;
+			if (args[i].equals("--optimize-csv") || args[i].equals("-p")) optimizeCSV = true;
+		}
+
 		String[] read = Reader.getLines(args[0]);
 
 		Tokenizer tokenizer = null;
@@ -44,10 +57,10 @@ public static void main(String[] args) {
 		FiniteStateMachine fsm = new FiniteStateMachine(grammar);
 		fsm.createAllStates();
 
-		for (State s : fsm.getStates()) s.print();
+		if (showStates) for (State s : fsm.getStates()) s.print();
 
 		Table table = new Table(fsm);
-		table.saveCSV(args[0] + ".csv");
+		table.saveCSV(args[0] + ".csv", optimizeCSV);
 		table.save(args[0] + ".txt");
 	}
 }

src/fr/senesi/g2t/table/Table.java

@@ -214,6 +214,10 @@ public void save(String filename) {
 	}
 
 	public void saveCSV(String filename) {
+		saveCSV(filename, false);
+	}
+
+	public void saveCSV(String filename, boolean optimizeCSV) {
 		File file = new File(filename);
 		if (file.exists()) file.delete();
 
@@ -230,7 +234,10 @@ public void saveCSV(String filename) {
 				writer.write("\nI" + i);
 
 				for (int j = 0; j < getTable()[i].length; j++) {
-					writer.write("," + getTable()[i][j].toString());
+					Action action = getTable()[i][j];
+
+					writer.write(",");
+					if (!optimizeCSV || action.getType() != ActionType.ERROR) writer.write(action.toString());
 				}
 			}