public static bool IsNullOrWhiteSpace(MutableString obj)
{
if (null == obj)
{
return(true);
}
#if NET20
if (0 == obj.Length)
{
return(true);
}
for (var i = 0; i < obj.Length; i++)
{
if (CharExtensionMethods.IsWhiteSpace(obj[i]))
{
continue;
}
return(false);
}
return(true);
#else
return(0 == obj.Length || obj.All(x => obj[0].IsWhiteSpace()));
#endif
}
public MutableString NormalizeToEnglishAlphabet()
{
if (0 == _value.Length)
{
return(this);
}
for (var i = _value.Length - 1; i > -1; i--)
{
var c = _value[i];
if (' ' == c)
{
continue;
}
if (char.IsDigit(c))
{
continue;
}
if (Characters.EnglishUppercase.Contains(c))
{
continue;
}
if (Characters.EnglishLowercase.Contains(c))
{
continue;
}
#if NET20
var english = CharExtensionMethods.ToEnglishAlphabet(c);
#else
var english = c.ToEnglishAlphabet();
#endif
if (!english.HasValue)
{
continue;
}
_value[i] = english.Value;
}
return(this);
}
public IEnumerable <string> Words()
{
var buffer = new StringBuilder();
for (var i = 0; i < _value.Length; i++)
{
if (char.IsLetterOrDigit(_value[i]))
{
buffer.Append(_value[i]);
continue;
}
#if NET20
if (!CharExtensionMethods.IsWhiteSpace(_value[i]))
#else
if (!_value[i].IsWhiteSpace())
#endif
{
continue;
}
if (0 == buffer.Length)
{
continue;
}
yield return(buffer.ToString());
#if NET20 || NET35
buffer.Remove(0, buffer.Length);
#else
buffer.Clear();
#endif
}
if (0 == buffer.Length)
{
yield break;
}
yield return(buffer.ToString());
}
public MutableString NormalizeWhiteSpace()
{
for (var i = 0; i < _value.Length; i++)
{
var c = _value[i];
if (' ' == c)
{
continue;
}
#if NET20
if (CharExtensionMethods.IsWhiteSpace(c))
#else
if (c.IsWhiteSpace())
#endif
{
_value[i] = ' ';
}
}
return(this);
}
public MutableString RemoveWhiteSpace()
{
#if NET20
if (0 == _value.Length)
{
return(this);
}
for (var i = _value.Length - 1; i > -1; i--)
{
if (!CharExtensionMethods.IsWhiteSpace(_value[i]))
{
continue;
}
Remove(i, 1);
}
return(this);
#else
return(RemoveCharacters(CharExtensionMethods.IsWhiteSpace));
#endif
}