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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| module Soundex | ||
| export soundex | ||
| import StaticStrings: StaticString | ||
|
|
||
| function encode(chr::Char)::Char | ||
| if in(chr, ['a', 'e', 'i', 'o','y', 'u']) | ||
| return '9' | ||
| elseif in(chr,['s','c','k','j','g','z','x','q']) | ||
| return '2' | ||
| elseif in(chr,['n','m']) | ||
| return '5' | ||
| elseif 'l' == chr | ||
| return '4' | ||
| elseif 'r' == chr | ||
| return '6' | ||
| elseif in(chr,['t','d']) | ||
| return '3' | ||
| elseif in(chr,['h','w']) | ||
| return '8' | ||
| elseif in(chr,['v','b','p','f']) | ||
| return '1' | ||
| elseif chr === ' ' | ||
| return '7' | ||
| else | ||
| @error "Unknown character encountered $chr" | ||
| end | ||
| end | ||
|
|
||
| function soundex(s::T)::StaticString{4} where T <: AbstractString | ||
| output = ['0' for _ in 1:4] | ||
| index = 1 | ||
| chr=lowercase(s[1]) | ||
| previous_encoding = encode(chr) | ||
| output[index] = uppercase(chr) | ||
| for chr in s[2:end] | ||
| if index <= 3 | ||
| encoding = encode(lowercase(chr)) | ||
| if encoding === '7' | ||
| # continue if space | ||
| continue | ||
| end | ||
| # if vowel or ignorable vars 'h' or 'w' | ||
| if encoding !== '9' && encoding !== '8' | ||
| if encoding !== previous_encoding | ||
| # Rule 4 on Consonant Separators | ||
| if encoding === output[index] | ||
| # If a vowel (A, E, I, O, U) separates two consonants that have the same code, code consonant to the right of vowel | ||
| if previous_encoding === '9' | ||
| index += 1 | ||
| output[index] = encoding | ||
| end | ||
| # If "H" or "W" separate two consonants that have code, the consonant to the right of the vowel is not coded | ||
| else | ||
| # different letter code soundex | ||
| index += 1 | ||
| output[index] = encoding | ||
| end | ||
| end | ||
| end | ||
| else | ||
| break | ||
| end | ||
| previous_encoding = encoding | ||
| end | ||
| return StaticString(String(output)) | ||
| end | ||
| end # module |
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