blob: 2d537f0cd5e9dcc71ac2a635f4d366075ca327af [file] [log] [blame]
import java.util.Locale
/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
private fun String.toCamelCase(): String {
val split = this.split("_")
if (split.isEmpty()) return ""
if (split.size == 1) return split[0].capitalize(Locale.US)
return split.joinToCamelCase()
}
private fun String.toCamelCaseAsVar(): String {
val split = this.split("_")
if (split.isEmpty()) return ""
if (split.size == 1) return split[0]
return split.joinToCamelCaseAsVar()
}
private fun List<String>.joinToCamelCase(): String = when (size) {
0 -> throw IllegalArgumentException("invalid section size, cannot be zero")
1 -> this[0].toCamelCase()
else -> this.joinToString("") { it.toCamelCase() }
}
private fun List<String>.joinToCamelCaseAsVar(): String = when (size) {
0 -> throw IllegalArgumentException("invalid section size, cannot be zero")
1 -> this[0].toCamelCaseAsVar()
else -> get(0).toCamelCaseAsVar() + drop(1).joinToCamelCase()
}
private val javaCharRegex = "[^a-zA-Z0-9]".toRegex()
fun String.stripNonJava(): String {
return this.split(javaCharRegex)
.map(String::trim)
.joinToCamelCaseAsVar()
}
// TODO: Replace this with the function from the Kotlin stdlib once the API becomes stable
fun String.capitalize(locale: Locale): String = if (isNotEmpty() && this[0].isLowerCase()) {
substring(0, 1).toUpperCase(locale) + substring(1)
} else {
this
}
// TODO: Replace this with the function from the Kotlin stdlib once the API becomes stable
fun String.decapitalize(locale: Locale): String = if (isNotEmpty() && this[0].isUpperCase()) {
substring(0, 1).toLowerCase(locale) + substring(1)
} else {
this
}