/*
* Copyright 2010-2017 JetBrains s.r.o.
*
* 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.jetbrains.kotlin.js.inline.util
import java.io.File
class RelativePathCalculator(baseDir: File) {
private val baseDirPath = generateSequence(baseDir.canonicalFile) { it.parentFile }.toList().asReversed()
fun calculateRelativePathTo(file: File): String? {
val path = generateSequence(file.canonicalFile) { it.parentFile }.toList().asReversed()
if (baseDirPath[0] != path[0]) return null
val commonLength = baseDirPath.zip(path).takeWhile { (first, second) -> first == second }.size
val sb = StringBuilder()
for (i in commonLength until baseDirPath.size) {
sb.append("../")
}
for (i in commonLength until path.size) {
sb.append(path[i].name).append('/')
}
sb.setLength(sb.lastIndex)
return sb.toString()
}
}