mirror of https://github.com/sbt/sbt.git
67 lines
1.9 KiB
Scala
67 lines
1.9 KiB
Scala
/* sbt -- Simple Build Tool
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* Copyright 2008, 2009 Mark Harrah
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*/
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package sbt
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import java.io.File
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import IO._
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import Resources.error
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object Resources
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{
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def apply(basePath: String) =
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{
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require(basePath.startsWith("/"))
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val resource = getClass.getResource(basePath)
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if(resource == null)
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error("Resource base directory '" + basePath + "' not on classpath.")
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else
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{
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val file = toFile(resource)
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if(file.exists)
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new Resources(file)
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else
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error("Resource base directory '" + basePath + "' does not exist.")
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}
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}
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def error(msg: String) = throw new ResourcesException(msg)
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private val LoadErrorPrefix = "Error loading initial project: "
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}
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class ResourcesException(msg: String) extends Exception(msg)
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class Resources(val baseDirectory: File)
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{
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import Resources._
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// The returned directory is not actually read-only, but it should be treated that way
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def readOnlyResourceDirectory(group: String, name: String): File =
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{
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val groupDirectory = new File(baseDirectory, group)
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if(groupDirectory.isDirectory)
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{
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val resourceDirectory = new File(groupDirectory, name)
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if(resourceDirectory.isDirectory)
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resourceDirectory
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else
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error("Resource directory '" + name + "' in group '" + group + "' not found.")
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}
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else
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error("Group '" + group + "' not found.")
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}
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def readWriteResourceDirectory[T](group: String, name: String)(withDirectory: File => T): T =
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{
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val file = readOnlyResourceDirectory(group, name)
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readWriteResourceDirectory(file)(withDirectory)
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}
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def readWriteResourceDirectory[T](readOnly: File)(withDirectory: File => T): T =
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{
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require(readOnly.isDirectory)
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def readWrite(readOnly: File)(temporary: File): T =
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{
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val readWriteDirectory = new File(temporary, readOnly.getName)
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copyDirectory(readOnly, readWriteDirectory)
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withDirectory(readWriteDirectory)
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}
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withTemporaryDirectory(readWrite(readOnly))
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}
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} |