/// <summary>
/// eg:04abcd
/// data=abcd ,herder=len(abcd)=04
/// </summary>
/// <param name="headerLength">add length for eatch data row</param>
/// <returns></returns>
public string ToFixedLengthString(int headerLength)
{
int length = 0;
StringBuilder sb = new StringBuilder();
foreach (var pi in this.GetType().GetProperties())
{
FixedLengthAttribute attribute = FixedLengthHelper.GetCustomAttribute <FixedLengthAttribute>(pi);
if (attribute != null && attribute.Length > 0)
{
if (attribute.Type == FixedLengthType.A)
{
sb.Append(HandleFixedString(pi.GetValue(this, null), attribute.Length));
}
else
{
sb.Append(HandleFixedNumber(pi.GetValue(this, null), attribute.Length));
}
length += attribute.Length;
}
}
if (headerLength > 0)
{
sb.Insert(0, HandleFixedNumber(length.ToString(), headerLength));
}
return(sb.ToString());
}
//public static string DecimalToHex(decimal? input)
//{
// return input.HasValue ? (Convert.ToInt32(input.Value)).ToString("X4") : null;
//}
//public static decimal HexToDecimal(string input)
//{
// return Convert.ToDecimal(HexToInt(input));
//}
//public static int HexToInt(string input)
//{
// return Convert.ToInt32(input, 16);
//}
//public static string IntToHex(int input, int length)
//{
// string pattern = "X";
// if (length > 0) pattern = pattern + length;
// return input.ToString(pattern);
//}
//public static string IntToHex(int input)
//{
// return input.ToString("X");
//}
//public static decimal IntToDecimal(int input, int precision)
//{
// return Convert.ToDecimal(input * 1.0 / (Math.Pow(10, precision)));
//}
////public static decimal IntToDecimalByUnit(int input, int precision, int unitId)
////{
//// //HL,HB,HV,SMG 不保留小数，不进位
//// if (unitId == 0 || unitId == 3 || unitId == 4 || unitId == 8)
//// return Math.Truncate(IntToDecimal(input, precision));
//// else
//// return IntToDecimal(input, precision);
////}
//private MaxLengthAttribute GetMaxLengthAttribute(PropertyInfo pi)
//{
// object[] cas = pi.GetCustomAttributes(typeof(MaxLengthAttribute), true);
// if (cas != null && cas.Length > 0)
// {
// return (MaxLengthAttribute)cas[0];
// }
// return null;
//}
public static object ParseFixedLengthStringRecursion(string input, Type type)
{
if (string.IsNullOrEmpty(input))
{
return(null);
}
object obj = Activator.CreateInstance(type);
int position = 0;
foreach (PropertyInfo pi in type.GetProperties())
{
if (pi.Name == "Response")
{
pi.SetValue(obj, input, null);
}
FixedLengthAttribute maxLength = GetCustomAttribute <FixedLengthAttribute>(pi);
if (maxLength != null && maxLength.Length > 0 && input.Length > position)
{
string value = "";
if (input.Length >= position + maxLength.Length)
{
value = input.Substring(position, maxLength.Length);
}
else
{
value = input.Substring(position);
}
if (maxLength.Type == FixedLengthType.X)
{
pi.SetValue(obj, ParseFixedLengthStringRecursion(value, pi.PropertyType), null);
}
else
{
if (pi.PropertyType == typeof(string))
{
pi.SetValue(obj, value, null);
}
else
{
if (IsNumeric(value))
{
pi.SetValue(obj, value, null);
}
}
}
position += maxLength.Length;
}
}
return(obj);
}
public static T ParseFixedLengthString <T>(T obj, string input) where T : new()
{
if (string.IsNullOrEmpty(input))
{
return(default(T));
}
int position = 0;
foreach (PropertyInfo pi in typeof(T).GetProperties())
{
if (pi.Name == "Response")
{
pi.SetValue(obj, input, null);
}
FixedLengthAttribute maxLength = GetCustomAttribute <FixedLengthAttribute>(pi);
if (maxLength != null && maxLength.Length > 0 && input.Length > position)
{
string value = "";
if (input.Length >= position + maxLength.Length)
{
value = input.Substring(position, maxLength.Length);
}
else
{
value = input.Substring(position);
}
if (pi.PropertyType == typeof(string))
{
pi.SetValue(obj, value, null);
}
else
{
if (IsNumeric(value))
{
pi.SetValue(obj, value, null);
}
}
position += maxLength.Length;
}
}
return(obj);
}
public static T FromFixedLengthString <T>(string input, int headerLength)
{
T obj = Activator.CreateInstance <T>();
string value = "";
int startIndex = 0;
if (headerLength > 0)
{
startIndex = headerLength;
}
StringBuilder sb = new StringBuilder();
foreach (var pi in obj.GetType().GetProperties())
{
FixedLengthAttribute attribute = FixedLengthHelper.GetCustomAttribute <FixedLengthAttribute>(pi);
if (attribute != null && attribute.Length > 0)
{
if (input.Length <= startIndex)
{
break;
}
else if (input.Length > startIndex && input.Length < startIndex + attribute.Length)
{
//value = input.Substring(startIndex);
value = SubstringWide(input, startIndex);
}
else
{
//value = input.Substring(startIndex, attribute.Length);
value = SubstringWide(input, startIndex, attribute.Length);
}
pi.SetValue(obj, value, null);
startIndex += attribute.Length;
}
}
return(obj);
}
