scala.coursier.cache.internal.MockCacheEscape.scala Maven / Gradle / Ivy
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package coursier.cache.internal
object MockCacheEscape {
private val unsafeChars: Set[Char] = " %$&+,:;=?@<>#".toSet
// Scala version of http://stackoverflow.com/questions/4571346/how-to-encode-url-to-avoid-special-characters-in-java/4605848#4605848
// '/' was removed from the unsafe character list
private def escape(input: String): String = {
def toHex(ch: Int) =
(if (ch < 10) '0' + ch else 'A' + ch - 10).toChar
def isUnsafe(ch: Char) =
ch > 128 || ch < 0 || unsafeChars(ch)
input.flatMap {
case ch if isUnsafe(ch) =>
"%" + toHex(ch / 16) + toHex(ch % 16)
case other =>
other.toString
}
}
def urlAsPath(url: String): String = {
assert(!url.startsWith("file:/"), s"Got file URL: $url")
url.split(":", 2) match {
case Array(protocol, remaining) =>
val remaining0 =
if (remaining.startsWith("///"))
remaining.stripPrefix("///")
else if (remaining.startsWith("/"))
remaining.stripPrefix("/")
else
throw new Exception(s"URL $url doesn't contain an absolute path")
val remaining1 =
if (remaining0.endsWith("/"))
// keeping directory content in .directory files
remaining0 + ".directory"
else
remaining0
escape(protocol + "/" + remaining1.dropWhile(_ == '/'))
case _ =>
throw new Exception(s"No protocol found in URL $url")
}
}
}