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108 lines
1.7 KiB
Go
108 lines
1.7 KiB
Go
package util
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func IsUpperCase(r rune) bool {
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if r >= 'A' && r <= 'Z' {
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return true
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}
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return false
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}
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func IsLowerCase(r rune) bool {
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if r >= 'a' && r <= 'z' {
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return true
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}
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return false
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}
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func ToSnakeCase(s string) string {
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out := []rune{}
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for index, r := range s {
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if index == 0 {
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out = append(out, ToLowerCase(r))
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continue
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}
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if IsUpperCase(r) && index != 0 {
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if IsLowerCase(rune(s[index-1])) {
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out = append(out, '_', ToLowerCase(r))
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continue
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}
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if index < len(s)-1 && IsLowerCase(rune(s[index+1])) {
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out = append(out, '_', ToLowerCase(r))
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continue
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}
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out = append(out, ToLowerCase(r))
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continue
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}
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out = append(out, r)
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}
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return string(out)
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}
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func ToCamelCase(s string) string {
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s = ToLower(s)
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out := []rune{}
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for index, r := range s {
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if r == '_' {
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continue
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}
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if index == 0 {
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out = append(out, ToUpperCase(r))
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continue
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}
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if index > 0 && s[index-1] == '_' {
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out = append(out, ToUpperCase(r))
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continue
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}
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out = append(out, r)
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}
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return string(out)
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}
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func ToLowerCase(r rune) rune {
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dx := 'A' - 'a'
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if IsUpperCase(r) {
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return r - dx
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}
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return r
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}
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func ToUpperCase(r rune) rune {
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dx := 'A' - 'a'
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if IsLowerCase(r) {
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return r + dx
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}
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return r
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}
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func ToLower(s string) string {
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out := []rune{}
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for _, r := range s {
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out = append(out, ToLowerCase(r))
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}
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return string(out)
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}
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func ToUpper(s string) string {
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out := []rune{}
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for _, r := range s {
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out = append(out, ToUpperCase(r))
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}
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return string(out)
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}
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func LowerFirst(s string) string {
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if len(s) == 0 {
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return s
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}
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return ToLower(s[:1]) + s[1:]
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}
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func UpperFirst(s string) string {
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if len(s) == 0 {
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return s
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}
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return ToUpper(s[:1]) + s[1:]
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}
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