Parser.java

/* 
 * Copyright (C) 2007  Anders Nilsson <anders.nilsson@cs.lth.se>
 *
 * This file is part of XmlSchemaCompiler.
 */

import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.InputStreamReader;
import java.io.Reader;

import AST.SchemaParser;
import AST.ParseException;
import AST.Start;

public class Parser {

	protected static Start parse(String args[]) {
		Reader r = getReader(args);
		Start ast = null;
		try {
			SchemaParser parser = new SchemaParser(r);

			ast = parser.Start();
		} catch (ParseException e) {
			System.out.println(e.getMessage());
		}
		return ast;
	}

	private static Reader getReader(String[] args) {
		Reader r = null;
		if (args.length != 1) {
			r = new InputStreamReader(System.in);
		} else {
			try {
				r = new FileReader(args[0]);
			} catch (FileNotFoundException e1) {
				System.err.println("Dumper: file " + args[0] + " not found");
			}
		}
		return r;
	}

}