/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.
 */

namespace Lucene.Net.Support
{
    /// <summary>
    /// 
    /// </summary>
    public class Single
    {
        /// <summary>
        /// 
        /// </summary>
        /// <param name="s"></param>
        /// <param name="style"></param>
        /// <param name="provider"></param>
        /// <returns></returns>
        public static System.Single Parse(System.String s, System.Globalization.NumberStyles style, System.IFormatProvider provider)
        {
            try
            {
                if (s.EndsWith("f") || s.EndsWith("F"))
                    return System.Single.Parse(s.Substring(0, s.Length - 1), style, provider);
                else
                    return System.Single.Parse(s, style, provider);
            }
            catch (System.FormatException fex)
            {
                throw fex;					
            }
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="s"></param>
        /// <param name="provider"></param>
        /// <returns></returns>
        public static System.Single Parse(System.String s, System.IFormatProvider provider)
        {
            try
            {
                if (s.EndsWith("f") || s.EndsWith("F"))
                    return System.Single.Parse(s.Substring(0, s.Length - 1), provider);
                else
                    return System.Single.Parse(s, provider);
            }
            catch (System.FormatException fex)
            {
                throw fex;					
            }
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="s"></param>
        /// <param name="style"></param>
        /// <returns></returns>
        public static System.Single Parse(System.String s, System.Globalization.NumberStyles style)
        {
            try
            {
                if (s.EndsWith("f") || s.EndsWith("F"))
                    return System.Single.Parse(s.Substring(0, s.Length - 1), style);
                else
                    return System.Single.Parse(s, style);
            }
            catch(System.FormatException fex)
            {
                throw fex;					
            }
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="s"></param>
        /// <returns></returns>
        public static System.Single Parse(System.String s)
        {
            try
            {
                if (s.EndsWith("f") || s.EndsWith("F"))
                    return System.Single.Parse(s.Substring(0, s.Length - 1).Replace(".", System.Globalization.CultureInfo.CurrentCulture.NumberFormat.NumberDecimalSeparator));
                else
                    return System.Single.Parse(s.Replace(".", System.Globalization.CultureInfo.CurrentCulture.NumberFormat.NumberDecimalSeparator));
            }
            catch(System.FormatException fex)
            {
                throw fex;					
            }
        }

        public static bool TryParse(System.String s, out float f)
        {
            bool ok = false;

            if (s.EndsWith("f") || s.EndsWith("F"))
                ok = System.Single.TryParse(s.Substring(0, s.Length - 1).Replace(".", System.Globalization.CultureInfo.CurrentCulture.NumberFormat.NumberDecimalSeparator), out f);
            else
                ok = System.Single.TryParse(s.Replace(".", System.Globalization.CultureInfo.CurrentCulture.NumberFormat.NumberDecimalSeparator), out f);

            return ok;
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="f"></param>
        /// <returns></returns>
        public static string ToString(float f)
        {
            return f.ToString().Replace(System.Globalization.CultureInfo.CurrentCulture.NumberFormat.NumberDecimalSeparator, ".");
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="f"></param>
        /// <param name="format"></param>
        /// <returns></returns>
        public static string ToString(float f, string format)
        {
            return f.ToString(format).Replace(System.Globalization.CultureInfo.CurrentCulture.NumberFormat.NumberDecimalSeparator, ".");
        }
    }
}