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package.scala
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package.scala
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/*
* Copyright 2018-2020 Scala Steward 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 org.scalasteward.core
import cats.implicits._
import org.scalasteward.core.util.Change.Unchanged
import org.scalasteward.core.util.{Change, Nel}
import scala.collection.mutable
import scala.util.matching.Regex
package object edit {
/** Like `replaceSomeInChange` but does not change anything between
* `scala-steward:off` and `scala-steward:on` markers.
*/
def replaceSomeInAllowedParts(
regex: Regex,
target: CharSequence,
replacer: Regex.Match => Option[String]
): Change[String] =
splitByOffOnMarker(target.toString).foldMap {
case (part, true) => util.string.replaceSomeInChange(regex, part, replacer)
case (part, false) => Unchanged(part)
}
private[edit] def splitByOffOnMarker(target: String): Nel[(String, Boolean)] = {
val buffer = mutable.ListBuffer.empty[(String, Boolean)]
val on = new StringBuilder()
val off = new StringBuilder()
val regexIgnoreMultiLinesBegins = """\s*\p{Punct}+\s*scala-steward:off""".r
def flush(builder: StringBuilder, canReplace: Boolean): Unit =
if (builder.nonEmpty) {
buffer.append((builder.toString(), canReplace))
builder.clear()
}
target.linesWithSeparators.foreach { line =>
if (off.nonEmpty)
if (line.contains("scala-steward:on")) {
flush(off, false)
on.append(line)
} else
off.append(line)
else if (line.contains("scala-steward:off")) {
flush(on, true)
if (regexIgnoreMultiLinesBegins.findPrefixOf(line).isDefined)
off.append(line)
else
// single line off
buffer.append((line, false))
} else if (line.contains("//")) {
val beforeAfter = line.split("//", 2)
on.append(beforeAfter(0))
flush(on, true)
buffer.append(("//" + beforeAfter(1), false))
} else on.append(line)
}
flush(on, true)
flush(off, false)
if (buffer.isEmpty)
Nel.of((target, true))
else
Nel.fromListUnsafe(buffer.toList)
}
}