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- /*
- * The MIT License (MIT)
- *
- * Copyright (c) 2015 Ian Coleman
- * Copyright (c) 2018 Ma_124, <github.com/Ma124>
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, Subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all
- * copies or Substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
- package strcase
-
- import (
- "strings"
- )
-
- // ToSnake converts a string to snake_case
- func ToSnake(s string) string {
- return ToDelimited(s, '_')
- }
-
- // ToScreamingSnake converts a string to SCREAMING_SNAKE_CASE
- func ToScreamingSnake(s string) string {
- return ToScreamingDelimited(s, '_', true)
- }
-
- // ToKebab converts a string to kebab-case
- func ToKebab(s string) string {
- return ToDelimited(s, '-')
- }
-
- // ToScreamingKebab converts a string to SCREAMING-KEBAB-CASE
- func ToScreamingKebab(s string) string {
- return ToScreamingDelimited(s, '-', true)
- }
-
- // ToDelimited converts a string to delimited.snake.case (in this case `del = '.'`)
- func ToDelimited(s string, del uint8) string {
- return ToScreamingDelimited(s, del, false)
- }
-
- // ToScreamingDelimited converts a string to SCREAMING.DELIMITED.SNAKE.CASE (in this case `del = '.'; screaming = true`) or delimited.snake.case (in this case `del = '.'; screaming = false`)
- func ToScreamingDelimited(s string, del uint8, screaming bool) string {
- s = addWordBoundariesToNumbers(s)
- s = strings.Trim(s, " ")
- n := ""
- for i, v := range s {
- // treat acronyms as words, eg for JSONData -> JSON is a whole word
- nextCaseIsChanged := false
- if i+1 < len(s) {
- next := s[i+1]
- if (v >= 'A' && v <= 'Z' && next >= 'a' && next <= 'z') || (v >= 'a' && v <= 'z' && next >= 'A' && next <= 'Z') {
- nextCaseIsChanged = true
- }
- }
-
- if i > 0 && n[len(n)-1] != del && nextCaseIsChanged {
- // add underscore if next letter case type is changed
- if v >= 'A' && v <= 'Z' {
- n += string(del) + string(v)
- } else if v >= 'a' && v <= 'z' {
- n += string(v) + string(del)
- }
- } else if v == ' ' || v == '_' || v == '-' {
- // replace spaces/underscores with delimiters
- n += string(del)
- } else {
- n = n + string(v)
- }
- }
-
- if screaming {
- n = strings.ToUpper(n)
- } else {
- n = strings.ToLower(n)
- }
- return n
- }
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