internal static string CollapseRepeatingConsonants(string name)
{
StringBuilder sb = new StringBuilder();
char prev = ' ';
bool first = true;
foreach (char c in name)
{
if (c != prev || first || PhoneticHelper.IsVowel(c))
{
sb.Append(c);
first = false;
}
prev = c;
}
return(sb.ToString());
}
internal static int MatchRatingCompute(string name1, string name2)
{
//0 is an impossible rating, it will mean unrated
if (string.IsNullOrEmpty(name1) || string.IsNullOrEmpty(name2))
{
return(0);
}
string large;
string small;
if (name1.Length >= name2.Length)
{
large = name1.ToUpper();
small = name2.ToUpper();
}
else
{
large = name2.ToUpper();
small = name1.ToUpper();
}
int x = large.Length;
int y = small.Length;
//If the length difference between the encoded strings is 3 or greater, then no similarity comparison is done.
if ((x - y) > 3)
{
return(0);
}
//Obtain the minimum rating value by calculating the length sum of the encoded strings and using table A
int minRating = MinimumRating(x + y);
//Process the encoded strings from left to right and remove any identical characters found from both strings respectively.
for (int i = 0; i < small.Length;)
{
bool found = false;
for (int j = 0; j < large.Length; j++)
{
if (small[i] == large[j])
{
small = small.Remove(i, 1);
large = large.Remove(j, 1);
found = true;
}
}
if (!found)
{
i++;
}
}
large = PhoneticHelper.ReverseString(large);
small = PhoneticHelper.ReverseString(small);
//Process the unmatched characters from right to left and remove any identical characters found from both names respectively.
for (int i = 0; i < small.Length;)
{
bool found = false;
for (int j = 0; j < large.Length; j++)
{
if (small[i] == large[j])
{
small = small.Remove(i, 1);
large = large.Remove(j, 1);
found = true;
}
}
if (!found)
{
i++;
}
}
//Subtract the number of unmatched characters from 6 in the longer string. This is the similarity rating.
int rating = 6 - (large.Length);
//If the similarity rating equal to or greater than the minimum rating then the match is considered good.
if (rating >= minRating)
{
return(rating);
}
return(0);
}
