zio.logging.internal.JsonEscape.scala Maven / Gradle / Ivy
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/*
* Copyright 2019-2024 John A. De Goes and the ZIO 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 zio.logging.internal
import scala.annotation.switch
object JsonEscape {
def apply(s: CharSequence): CharSequence = {
val sb = new java.lang.StringBuilder
var i = 0
val len = s.length
while (i < len) {
(s.charAt(i): @switch) match {
case '"' => sb.append("\\\"")
case '\\' => sb.append("\\\\")
case '\b' => sb.append("\\b")
case '\f' => sb.append("\\f")
case '\n' => sb.append("\\n")
case '\r' => sb.append("\\r")
case '\t' => sb.append("\\t")
case c =>
if (c < ' ') sb.append("\\u%04x".format(c.toInt))
else sb.append(c)
}
i += 1
}
sb
}
}