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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"
)
// Converts a string to CamelCase
func toCamelInitCase(s string, initCase bool) string {
s = strings.TrimSpace(s)
if s == "" {
return s
}
a, hasAcronym := uppercaseAcronym.Load(s)
if hasAcronym {
s = a.(string)
}
n := strings.Builder{}
n.Grow(len(s))
capNext := initCase
prevIsCap := false
for i, v := range []byte(s) {
vIsCap := v >= 'A' && v <= 'Z'
vIsLow := v >= 'a' && v <= 'z'
if capNext {
if vIsLow {
v += 'A'
v -= 'a'
}
} else if i == 0 {
if vIsCap {
v += 'a'
v -= 'A'
}
} else if prevIsCap && vIsCap && !hasAcronym {
v += 'a'
v -= 'A'
}
prevIsCap = vIsCap
if vIsCap || vIsLow {
n.WriteByte(v)
capNext = false
} else if vIsNum := v >= '0' && v <= '9'; vIsNum {
n.WriteByte(v)
capNext = true
} else {
capNext = v == '_' || v == ' ' || v == '-' || v == '.'
}
}
return n.String()
}
// ToCamel converts a string to CamelCase
func ToCamel(s string) string {
return toCamelInitCase(s, true)
}
// ToLowerCamel converts a string to lowerCamelCase
func ToLowerCamel(s string) string {
return toCamelInitCase(s, false)
}
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