migratedb.v1.integrationtest.util.base.SafeIdentifier.kt Maven / Gradle / Ivy
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/*
* Copyright 2022-2024 The MigrateDB contributors
*
* 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.
*/
package migratedb.v1.integrationtest.util.base
/**
* A database identifier that doesn't need quoting or escaping .
*/
class SafeIdentifier private constructor(private val s: String) : CharSequence by s {
companion object {
private val regex = Regex("""[_a-zA-Z][\w_]{0,29}""")
fun String.asSafeIdentifier() =
takeIfSafeIdentifier() ?: throw IllegalArgumentException("Not a safe identifier")
fun String.takeIfSafeIdentifier() = when (regex.matches(this)) {
true -> SafeIdentifier(this)
else -> null
}
}
override fun toString() = s
override fun equals(other: Any?) = other === this || (other is SafeIdentifier && other.s == s)
override fun hashCode() = s.hashCode()
}