/usr/share/gocode/src/github.com/jessevdk/go-flags/closest.go is in golang-go-flags-dev 0.0~git20131216-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 | package flags
func levenshtein(s string, t string) int {
if len(s) == 0 {
return len(t)
}
if len(t) == 0 {
return len(s)
}
var l1, l2, l3 int
if len(s) == 1 {
l1 = len(t) + 1
} else {
l1 = levenshtein(s[1:len(s)-1], t) + 1
}
if len(t) == 1 {
l2 = len(s) + 1
} else {
l2 = levenshtein(t[1:len(t)-1], s) + 1
}
l3 = levenshtein(s[1:len(s)], t[1:len(t)])
if s[0] != t[0] {
l3 += 1
}
if l2 < l1 {
l1 = l2
}
if l1 < l3 {
return l1
}
return l3
}
func closestChoice(cmd string, choices []string) (string, int) {
if len(choices) == 0 {
return "", 0
}
mincmd := -1
mindist := -1
for i, c := range choices {
l := levenshtein(cmd, c)
if mincmd < 0 || l < mindist {
mindist = l
mincmd = i
}
}
return choices[mincmd], mindist
}
|