/
snaker.go
73 lines (60 loc) · 1.25 KB
/
snaker.go
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package utils
import (
"strings"
"unicode"
)
// ToSnake converts a given string to snake case
func ToSnake(s string) string {
var result string
var words []string
var lastPos int
rs := []rune(s)
for i := 0; i < len(rs); i++ {
if i > 0 {
switch {
case unicode.IsUpper(rs[i]):
words = append(words, s[lastPos:i])
lastPos = i
case rs[i] == '-':
fallthrough
case rs[i] == '.':
words = append(words, s[lastPos:i])
i++
lastPos = i
}
}
}
// append the last word
if s[lastPos:] != "" {
words = append(words, s[lastPos:])
}
for k, word := range words {
if k > 0 {
result += "_"
}
result += strings.ToLower(word)
}
return result
}
// ToCamel returns a string converted from snake case to uppercase
func ToCamel(s string) string {
return snakeToCamel(s, true)
}
// ToCamelLower returns a string converted from snake case to lowercase
func ToCamelLower(s string) string {
return snakeToCamel(s, false)
}
func snakeToCamel(s string, upperCase bool) string {
var result string
words := strings.Split(s, "_")
for i, word := range words {
if (upperCase || i > 0) && len(word) > 0 {
w := []rune(word)
w[0] = unicode.ToUpper(w[0])
result += string(w)
} else {
result += word
}
}
return result
}