UPnPStateVariable.cs

using System;
using System.Collections.Generic;
using System.Text;
using System.Threading.Tasks;
using System.Xml;
using Waher.Content;
 
namespace Waher.Networking.UPnP
{
    public class UPnPStateVariable
    {
        private readonly XmlElement xml;
        private readonly string[] allowedValues;
        private readonly string name;
        private readonly string dataType;
        private readonly string defaultValue;
        private readonly string minimum;
        private readonly string maximum;
        private readonly string step;
        private readonly bool sendsEvents;
        private readonly bool hasAllowedValues = false;
        private readonly bool hasAllowedValueRange = false;
 
        internal UPnPStateVariable(XmlElement Xml)
        {
            List<string> AllowedValues = new List<string>();
 
            this.xml = Xml;
 
            this.sendsEvents = (Xml.HasAttribute("sendEvents") && Xml.GetAttribute("sendEvents") == "yes");
 
            foreach (XmlNode N in Xml.ChildNodes)
            {
                switch (N.LocalName)
                {
                    case "name":
                        this.name = N.InnerText;
                        break;
 
                    case "dataType":
                        this.dataType = N.InnerText;
                        break;
 
                    case "defaultValue":
                        this.defaultValue = N.InnerText;
                        break;
 
                    case "allowedValueList":
                        this.hasAllowedValues = true;
                        foreach (XmlNode N2 in N.ChildNodes)
                        {
                            if (N2.LocalName == "allowedValue")
                                AllowedValues.Add(N2.InnerText);
                        }
                        break;
 
                    case "allowedValueRange":
                        this.hasAllowedValueRange = true;
                        foreach (XmlNode N2 in N.ChildNodes)
                        {
                            switch (N2.LocalName)
                            {
                                case "minimum":
                                    this.minimum = N2.InnerText;
                                    break;
 
                                case "maximum":
                                    this.maximum = N2.InnerText;
                                    break;
 
                                case "step":
                                    this.step = N2.InnerText;
                                    break;
                            }
                        }
                        break;
                }
            }
 
            this.allowedValues = AllowedValues.ToArray();
        }
 
        public XmlElement Xml => this.xml;
 
        public string Name => this.name;
 
        public string DataType => this.dataType;
 
        public string DefaultValue => this.defaultValue;
 
        public bool SendsEvents => this.sendsEvents;
 
        public string[] AllowedValues => this.allowedValues;
 
        public bool HasAllowedValues => this.hasAllowedValues;
 
        public bool HasAllowedValueRange => this.hasAllowedValueRange;
 
        public string Minimum => this.minimum;
 
        public string Maximum => this.maximum;
 
        public string Step => this.step;
 
        public async Task<string> ValueToXmlString(object Value)
        {
            switch (this.dataType)
            {
                case "ui1":
                case "ui2":
                case "ui4":
                case "i1":
                case "i2":
                case "i4":
                case "int":
                case "char":
                case "string":
                case "uri":
                case "uuid":
                default:
                    return Value.ToString();
 
                case "r4":
                case "r8":
                case "number":
                case "float":
                    if (!(Value is double d))
                    {
                        if (Value is float f)
                            d = f;
                        else if (Value is decimal dec)
                            d = (double)dec;
                        else
                            d = Convert.ToDouble(Value);
                    }
 
                    return d.ToString().Replace(System.Globalization.NumberFormatInfo.CurrentInfo.NumberDecimalSeparator, ".");
 
                case "fixed.14.4":
 
                    if (Value is double d2)
                        d = d2;
                    else if (Value is float f2)
                        d = f2;
                    else if (Value is decimal dec2)
                        d = (double)dec2;
                    else
                        d = Convert.ToDouble(Value);
 
                    return d.ToString("F4").Replace(System.Globalization.NumberFormatInfo.CurrentInfo.NumberDecimalSeparator, ".");
 
                case "date":
                    if (!(Value is DateTime DT))
                        DT = Convert.ToDateTime(Value);
 
                    return DT.ToString("yyyyMMdd");
 
                case "dateTime":
                    if (!(Value is DateTime DT2))
                        DT2 = Convert.ToDateTime(Value);
 
                    return DT2.ToString("yyyyMMddTHHmmss");
 
                case "dateTime.tz":
                    if (Value is DateTimeOffset DTO)
                    {
                        string s = DTO.ToString("yyyyMMddTHHmmss");
                        TimeSpan Zone = DTO.Offset;
 
                        if (Zone < TimeSpan.Zero)
                        {
                            s += "-";
                            Zone = -Zone;
                        }
                        else
 
                            s += "+";
 
                        return s + Zone.Hours.ToString("D2") + ":" + Zone.Minutes.ToString("D2");
                    }
                    else
                    {
                        if (!(Value is DateTime DT3))
                            DT3 = Convert.ToDateTime(Value);
 
                        return DT3.ToString("yyyyMMddTHHmmss");
                    }
 
                case "time":
                    if (Value is TimeSpan TS)
                        return TS.Hours.ToString("D2") + ":" + TS.Minutes.ToString("D2") + ":" + TS.Seconds.ToString("D2");
                    else if (Value is DateTime DT4)
                        return DT4.ToString("HH:mm:ss");
                    else if (TimeSpan.TryParse(Value.ToString(), out TS))
                        return TS.Hours.ToString("D2") + ":" + TS.Minutes.ToString("D2") + ":" + TS.Seconds.ToString("D2");
                    else
                    {
                        DT = Convert.ToDateTime(Value);
                        return DT.ToString("HH:mm:ss");
                    }
 
                case "time.tz":
                    if (Value is TimeSpan TS2)
                        return TS2.Hours.ToString("D2") + ":" + TS2.Minutes.ToString("D2") + ":" + TS2.Seconds.ToString("D2");
                    else if (Value is DateTime DT5)
                        return DT5.ToString("HH:mm:ss");
                    else if (Value is DateTimeOffset DTO2)
                    {
                        string s = DTO2.ToString("HH:mm:ss");
                        TimeSpan Zone = DTO2.Offset;
 
                        if (Zone < TimeSpan.Zero)
                        {
                            s += "-";
                            Zone = -Zone;
                        }
                        else
 
                            s += "+";
 
                        return s + Zone.Hours.ToString("D2") + ":" + Zone.Minutes.ToString("D2");
                    }
                    else if (TimeSpan.TryParse(Value.ToString(), out TS))
                        return TS.Hours.ToString("D2") + ":" + TS.Minutes.ToString("D2") + ":" + TS.Seconds.ToString("D2");
                    else
                    {
                        DT = Convert.ToDateTime(Value);
                        return DT.ToString("HH:mm:ss");
                    }
 
                case "boolean":
                    if (!(Value is bool b))
                        b = Convert.ToBoolean(Value);
 
                    return b ? "1" : "0";
 
                case "bin.base64":
                    if (!(Value is byte[] Bin))
                        Bin = await SerializeToBinary(Value);
 
                    return Convert.ToBase64String(Bin);
 
                case "bin.hex":
                    if (!(Value is byte[] Bin2))
                        Bin2 = await SerializeToBinary(Value);
 
                    StringBuilder sb = new StringBuilder();
 
                    foreach (byte b2 in Bin2)
                        sb.Append(b2.ToString("X2"));
 
                    return sb.ToString();
            }
        }
 
        public object XmlStringToValue(string Value)
        {
            switch (this.dataType)
            {
                case "ui1":
                    return byte.Parse(Value);
 
                case "ui2":
                    return ushort.Parse(Value);
 
                case "ui4":
                    return uint.Parse(Value);
 
                case "i1":
                    return sbyte.Parse(Value);
 
                case "i2":
                    return short.Parse(Value);
 
                case "i4":
                    return int.Parse(Value);
 
                case "int":
                    return long.Parse(Value);
 
                case "char":
                    return Value[0];
 
                case "string":
                    return Value;
 
                case "uri":
                    return new Uri(Value);
 
                case "uuid":
                    return new Guid(Value);
 
                case "r4":
                    return float.Parse(Value.Replace(".", System.Globalization.NumberFormatInfo.CurrentInfo.NumberDecimalSeparator));
 
                case "r8":
                case "number":
                case "float":
                case "fixed.14.4":
                    return double.Parse(Value.Replace(".", System.Globalization.NumberFormatInfo.CurrentInfo.NumberDecimalSeparator));
 
                case "date":
                    return DateTime.Parse(Value);
 
                case "dateTime":
                    return DateTime.Parse(Value.Replace("T", " "));
 
                case "dateTime.tz":
                    return DateTimeOffset.Parse(Value.Replace("T", " "));
 
                case "time":
                case "time.tz":
                    return TimeSpan.Parse(Value.Replace("T", " "));
 
                case "boolean":
                    Value = Value.ToLower();
                    return (Value == "1" || Value == "true" || Value == "yes");
 
                case "bin.base64":
                    return Convert.FromBase64String(Value);
 
                case "bin.hex":
                    int i, c = Value.Length;
                    if ((c & 1) == 1)
                        throw new Exception("Invalid bin.hex value");
 
                    byte[] Bin = new byte[c / 2];
                    int j;
                    byte b;
                    char ch;
 
                    for (i = j = 0; i < c;)
                    {
                        ch = Value[i++];
 
                        if (ch >= '0' && ch <= '9')
                            b = (byte)(ch - '0');
                        else if (ch >= 'A' && ch <= 'F')
                            b = (byte)(ch - 'A' + 10);
                        else if (ch >= 'a' && ch <= 'f')
                            b = (byte)(ch - 'a' + 10);
                        else
                            throw new Exception("Invalid bin.hex value");
 
                        b <<= 4;
                        ch = Value[i++];
 
                        if (ch >= '0' && ch <= '9')
                            b |= (byte)(ch - '0');
                        else if (ch >= 'A' && ch <= 'F')
                            b |= (byte)(ch - 'A' + 10);
                        else if (ch >= 'a' && ch <= 'f')
                            b |= (byte)(ch - 'a' + 10);
                        else
                            throw new Exception("Invalid bin.hex value");
 
                        Bin[j++] = b;
                    }
 
                    return Bin;
 
                default:
                    return Value;
            }
        }
 
        public static async Task<byte[]> SerializeToBinary(object Value)
        {
            if (Value is byte[] Bin)
                return Bin;
            else
            {
                KeyValuePair<byte[], string> P = await InternetContent.EncodeAsync(Value, Encoding.UTF8);
                return P.Key;
            }
        }
    }
}