CS2JNet.System.DoubleSupport Maven / Gradle / Ivy

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/*
   Copyright 2007,2008,2009,2010 Rustici Software, LLC
   Copyright 2010,2011 Kevin Glynn ([email protected])

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.

   Author(s):

   Kevin Glynn ([email protected])
*/

package CS2JNet.System;

import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.text.ParseException;

import CS2JNet.JavaSupport.language.RefSupport;
import CS2JNet.JavaSupport.util.LocaleSupport;
import CS2JNet.System.Globalization.*;

import java.util.Locale;

public class DoubleSupport {
	
	public static String ToString(double d, String format) {
		
		String formattedValue = "";
		
		if ((format.toLowerCase().indexOf("g") == 0 || format.toLowerCase().indexOf("n") == 0) && format.length() < 3) {
			
			if (format.length() == 2) {
				String lengthStr = format.substring(1);
				try {
					int len = Integer.parseInt(lengthStr);
					String decimalFormatString = "#.";
					for(int i=0; i 0)
			   toParse = StringSupport.TrimStart(toParse, null);

		if ((style & NumberStyles.getAllowTrailingWhite()) > 0)
			   toParse = StringSupport.TrimEnd(toParse, null);

		if ((style & NumberStyles.getAllowLeadingSign()) == 0)
			   if (toParse.charAt(0) == '+' || toParse.charAt(0) == '-')
				   throw new ParseException("Signs not allowed: " + s, 0);

		return NumberFormat.getInstance(loc == null ? LocaleSupport.INVARIANT : loc).parse(toParse).doubleValue();
		
	}
	public static boolean tryParse(String s, int style, Locale loc, RefSupport result)
	{
		String toParse = s;
		
		if ((style & NumberStyles.getAllowLeadingWhite()) > 0)
			   toParse = StringSupport.TrimStart(toParse, null);

		if ((style & NumberStyles.getAllowTrailingWhite()) > 0)
			   toParse = StringSupport.TrimEnd(toParse, null);

		if ((style & NumberStyles.getAllowLeadingSign()) == 0)
			   if (toParse.charAt(0) == '+' || toParse.charAt(0) == '-')
				   return false;

		try {
			result.setValue(NumberFormat.getInstance(loc == null ? LocaleSupport.INVARIANT : loc).parse(toParse).doubleValue());
			return true;
		} catch (ParseException e) {
			return false;
		}
		
	}
	public static boolean tryParse(String s, RefSupport result)
	{
		// TODO: what is default style?
		return tryParse(s, NumberStyles.getAny(), null, result);
	}
}