go: update modules

Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>

vendor/github.com/xrash/smetrics/soundex.go

@@ -0,0 +1,41 @@
+package smetrics
+
+import (
+	"strings"
+)
+
+// The Soundex encoding. It is a phonetic algorithm that considers how the words sound in English. Soundex maps a string to a 4-byte code consisting of the first letter of the original string and three numbers. Strings that sound similar should map to the same code.
+func Soundex(s string) string {
+	m := map[byte]string{
+		'B': "1", 'P': "1", 'F': "1", 'V': "1",
+		'C': "2", 'S': "2", 'K': "2", 'G': "2", 'J': "2", 'Q': "2", 'X': "2", 'Z': "2",
+		'D': "3", 'T': "3",
+		'L': "4",
+		'M': "5", 'N': "5",
+		'R': "6",
+	}
+
+	s = strings.ToUpper(s)
+
+	r := string(s[0])
+	p := s[0]
+	for i := 1; i < len(s) && len(r) < 4; i++ {
+		c := s[i]
+
+		if (c < 'A' || c > 'Z') || (c == p) {
+			continue
+		}
+
+		p = c
+
+		if n, ok := m[c]; ok {
+			r += n
+		}
+	}
+
+	for i := len(r); i < 4; i++ {
+		r += "0"
+	}
+
+	return r
+}