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/*
* Copyright (c) 2014 Contributor. All rights reserved.
*/
package scala.tools.nsc.classpath
import java.io.File
import java.net.URL
import scala.collection.Seq
import scala.reflect.io.AbstractFile
import scala.reflect.io.FileZipArchive
import FileUtils.AbstractFileOps
/**
* A trait allowing to look for classpath entries of given type in zip and jar files.
* It provides common logic for classes handling class and source files.
* It's aware of things like e.g. META-INF directory which is correctly skipped.
*/
trait ZipArchiveFileLookup[FileEntryType <: ClassRepClassPathEntry] extends FlatClassPath {
val zipFile: File
assert(zipFile != null, "Zip file in ZipArchiveFileLookup cannot be null")
override def asURLs: Seq[URL] = Seq(zipFile.toURI.toURL)
override def asClassPathStrings: Seq[String] = Seq(zipFile.getPath)
private val archive = new FileZipArchive(zipFile)
override private[nsc] def packages(inPackage: String): Seq[PackageEntry] = {
val prefix = PackageNameUtils.packagePrefix(inPackage)
for {
dirEntry <- findDirEntry(inPackage).toSeq
entry <- dirEntry.iterator if entry.isPackage
} yield PackageEntryImpl(prefix + entry.name)
}
protected def files(inPackage: String): Seq[FileEntryType] =
for {
dirEntry <- findDirEntry(inPackage).toSeq
entry <- dirEntry.iterator if isRequiredFileType(entry)
} yield createFileEntry(entry)
override private[nsc] def list(inPackage: String): FlatClassPathEntries = {
val foundDirEntry = findDirEntry(inPackage)
foundDirEntry map { dirEntry =>
val pkgBuf = collection.mutable.ArrayBuffer.empty[PackageEntry]
val fileBuf = collection.mutable.ArrayBuffer.empty[FileEntryType]
val prefix = PackageNameUtils.packagePrefix(inPackage)
for (entry <- dirEntry.iterator) {
if (entry.isPackage)
pkgBuf += PackageEntryImpl(prefix + entry.name)
else if (isRequiredFileType(entry))
fileBuf += createFileEntry(entry)
}
FlatClassPathEntries(pkgBuf, fileBuf)
} getOrElse FlatClassPathEntries(Seq.empty, Seq.empty)
}
private def findDirEntry(pkg: String) = {
val dirName = s"${FileUtils.dirPath(pkg)}/"
archive.allDirs.get(dirName)
}
protected def createFileEntry(file: FileZipArchive#Entry): FileEntryType
protected def isRequiredFileType(file: AbstractFile): Boolean
}
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