com.zeoflow.depot.ext.string_ext.kt Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of depot-compiler Show documentation

The Depot persistence library provides an abstraction layer over SQLite to allow for more robust database access while using the full power of SQLite.

The newest version!

import java.util.Locale

/*
 * Copyright (C) 2021 ZeoFlow SRL
 *
 * 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.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.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).uppercase(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).lowercase(locale) + substring(1)
} else {
    this
}