Scala File类代码示例

//设置package包名称以及导入依赖的类
import org.specs2.mutable._
import org.specs2.runner._
import org.junit.runner._

import play.api.test._
import play.api.test.Helpers._
import java.io.File


class ApplicationSpec extends Specification {

  val modulePath = new File("./modules/web/")

  "Web Module" should {

    "send 404 on a bad request" in {
      running(FakeApplication(path = modulePath)) {
        route(FakeRequest(GET, "/boum")) must beSome.which(status(_) == NOT_FOUND)
      }
    }

    "render the index page" in {
      running(FakeApplication(path = modulePath)) {
        val index = route(FakeRequest(GET, "/")).get

        status(index) must equalTo(OK)
        contentType(index) must beSome.which(_ == "text/html")
        contentAsString(index) must contain("WEB template")
      }
    }
  }
} 

//设置package包名称以及导入依赖的类
package communication

import java.io.File

import akka.actor.{ActorRef, ActorSystem}
import akka.testkit.{ImplicitSender, TestKit}
import org.scalatest.{BeforeAndAfterAll, Matchers, WordSpecLike}
import index.{DirectoryIndex, FileIndex}


class NodeTest() extends TestKit(ActorSystem("NodeTest")) with ImplicitSender
  with WordSpecLike with Matchers with BeforeAndAfterAll {

  implicit val homeDirPath = "/home/mike/Programming/scala/Cloudia"


  override def afterAll {
    TestKit.shutdownActorSystem(system)
  }

  "Node" must {
    "send back directory index if pinged" in {
      val node: ActorRef = system.actorOf(Node.props(homeDirPath))
      node ! Ping()
      expectMsgPF() {
        case DirectoryIndex(_) => ()
      }
    }
  }

  it must {
    "send back file manifest if one was requested" in {
      val node: ActorRef = system.actorOf(Node.props(homeDirPath))
      val fileIndex = new FileIndex(new File("src/test/resources/chunkifierTest"))
      node ! Request(fileIndex)
      expectMsgPF() {
        case FileManifest(_, _) => ()
      }
    }
  }
} 

//设置package包名称以及导入依赖的类
import java.io.File
import java.net.InetSocketAddress

import play.sbt.PlayRunHook
import sbt._

object EmberRunner {
  def apply(logger: Logger,
            baseDir: File,
            port: Int = 4200): PlayRunHook = {

    object EmberRunHook extends PlayRunHook {
      var watchProcess: Option[Process] = None

      override def beforeStarted(): Unit = {
        if (baseDir.exists()) {
          logger.info("Executing npm install")
          val npm = Process(Seq("npm", "install"), baseDir).lines
          npm.foreach(logger.info(_))

          logger.info("Executing bower install")
          val bower = Process(Seq("bower", "install"), baseDir).lines
          bower.foreach(logger.info(_))
        } else {
          logger.info(s"Skipping npm and bower install. UI application directory ${baseDir.getAbsolutePath} not found.")
        }
      }

      override def afterStarted(addr: InetSocketAddress): Unit = {
        addr.getAddress.getHostAddress
        val url = s"http://localhost:${addr.getPort}"
        if (baseDir.exists()) {
          logger.info(s"Starting ember server in development mode. Setting proxy to $url")
          watchProcess = Some(Process(Seq("ember", "serve", "--proxy", url, "--port", port.toString), baseDir).run(logger))
        } else {
          logger.info(s"Skipping ember server start. UI application directory ${baseDir.getAbsolutePath} not found.")
        }
      }

      override def afterStopped(): Unit = {
        logger.info("Attempting to stop ember server")
        watchProcess.foreach(_.destroy())
        watchProcess = None
      }
    }
    EmberRunHook
  }
} 

//设置package包名称以及导入依赖的类
import java.io.File
import scala.io.Source

val dir = args(0)

def fileAndLine = for (
  file <- new File(dir).listFiles if file.isFile && file.canRead;
  line <- Source.fromFile(file).getLines.toList
) yield (file, line)

val longestLine = fileAndLine
  .reduceLeft(
    (l, r) =>
      if (getPrefix(l._1, l._2).length > getPrefix(r._1, r._2).length) l else r
  )

val longestPrefix = getPrefix(longestLine._1, longestLine._2).length

fileAndLine.foreach(f => println(padString(getPrefix(f._1, f._2), longestPrefix) + " " + f._2))

def padString(string: String, max: Int, char: Char = ' ') = char.toString * (max - string.length) + string
def getPrefix(file: File, line: String) = file.getName + ":" + line.length 

//设置package包名称以及导入依赖的类
package org.cg.scala.dhc.util

import java.io.{ByteArrayOutputStream, File, FileInputStream}

import scala.util.matching.Regex
import scala.xml.Elem
import scala.xml.factory.XMLLoader
import javax.xml.parsers.SAXParser

object XML extends XMLLoader[Elem] {
  override def parser: SAXParser = {
    val f = javax.xml.parsers.SAXParserFactory.newInstance()
    f.setFeature("http://apache.org/xml/features/nonvalidating/load-dtd-grammar", false);
    f.setFeature("http://apache.org/xml/features/nonvalidating/load-external-dtd", false);
    f.newSAXParser()
  }
}

object FileUtil {

  def recursiveListFileInfos(baseDir: String, regex: String): Array[FileInfo] =
    recursiveListFiles(baseDir, regex).map(f => new FileInfo(f.getName, f.getCanonicalPath, f.lastModified()))

  def recursiveListFiles(baseDir: String, regex: String): Array[File] = recursiveListFiles(new File(baseDir), new Regex(regex))

  def recursiveListFiles(f: File, r: Regex): Array[File] = {
    val these = f.listFiles
    if (these != null) {
      val good = these.filter(f => r.findFirstIn(f.getName).isDefined)
      good ++ these.filter(_.isDirectory).flatMap(recursiveListFiles(_, r))
    }
    else
      new Array[File](0)
  }

  def fileToString(file: File) = {
    val inStream = new FileInputStream(file)
    val outStream = new ByteArrayOutputStream
    try {
      var reading = true
      while (reading) {
        inStream.read() match {
          case -1 => reading = false
          case c => outStream.write(c)
        }
      }
      outStream.flush()
    }
    finally {
      inStream.close()
    }
    new String(outStream.toByteArray())
  }

} 

//设置package包名称以及导入依赖的类
package com.hadooparchitecturebook.taxi360.server.hbase

import java.io.File

import com.sun.jersey.spi.container.servlet.ServletContainer
import org.apache.hadoop.hbase.HBaseConfiguration
import org.mortbay.jetty.Server
import org.mortbay.jetty.servlet.{Context, ServletHolder}

object HBaseRestServer {
  def main(args:Array[String]): Unit = {

    if (args.length == 0) {
      println("<port> <configDir> <numberOfSalts> <customerTableName>")
    }
    val port = args(0).toInt
    val hbaseConfigFolder = args(1)
    val numberOfSalts = args(2).toInt
    val appEventTableName = args(3)

    val conf = HBaseConfiguration.create()
    conf.addResource(new File(hbaseConfigFolder + "hbase-site.xml").toURI.toURL)

    HBaseGlobalValues.init(conf, numberOfSalts,
      appEventTableName)

    val server = new Server(port)

    val sh = new ServletHolder(classOf[ServletContainer])
    sh.setInitParameter("com.sun.jersey.config.property.resourceConfigClass", "com.sun.jersey.api.core.PackagesResourceConfig")
    sh.setInitParameter("com.sun.jersey.config.property.packages", "com.hadooparchitecturebook.taxi360.server.hbase")
    sh.setInitParameter("com.sun.jersey.api.json.POJOMappingFeature", "true")

    val context = new Context(server, "/", Context.SESSIONS)
    context.addServlet(sh, "/*")

    println("starting HBase Rest Server")
    server.start()
    println("started HBase Rest Sserver")
    server.join()
  }
} 

//设置package包名称以及导入依赖的类
package tech.artemisia.util

import java.io.{File, FileNotFoundException}
import tech.artemisia.TestSpec
import tech.artemisia.core.Keywords.Config
import tech.artemisia.core.TestEnv.TestOsUtil
import tech.artemisia.core.{Keywords, env}




class UtilSpec extends TestSpec {

  var os_util: TestOsUtil = _

  override def beforeEach(): Unit = {
    super.beforeEach()
    os_util = env.osUtil.asInstanceOf[TestOsUtil]
  }

  "The Util.readConfigFile" must "throw FileNotFoundException on non-existent file" in {
    intercept[FileNotFoundException] {
      Util.readConfigFile(new File("Some_Non_Existant_File.conf"))
    }
  }

  "Util.getGlobalConfigFileLocation" must s"must provide default value when is ${Config.GLOBAL_FILE_REF_VAR} not set" in {
    os_util.withSysVar(Map()) {
      val default_value = this.getClass.getResource("/code/code_with_simple_mysql_component.conf").getFile
      Util.getGlobalConfigFileLocation(default_value).get must equal(default_value)
    }
  }

  it must s"must give a None if ${Keywords.Config.GLOBAL_FILE_REF_VAR} not set and the default file doesn't exist" in {
    os_util.withSysVar(Map("foo2" -> "baz2")) {
      val default_value = "A_Non_Existant_File.conf"
      Util.getGlobalConfigFileLocation(default_value) must equal(None)
    }
  }

} 

//设置package包名称以及导入依赖的类
package io

import java.io.File

import communication.FileManifest
import index.FileIndex
import org.scalatest.{FlatSpec, Matchers}


class ChunkifyAndBuildTest extends FlatSpec with Matchers {
  implicit val homeDirPath = "/home/mike/Programming/scala/"

  "Chunkifier and FileBuilder" should "chunkify and rebuild file properly" in {
    val originalFile = new File("src/test/resources/chunkifierTest")
    val chunksList: List[Chunk] = Chunkifier(100, originalFile)
    val fileManifest = FileManifest(new FileIndex(originalFile), 100)
    val fileBuilder = new FileBuilder(fileManifest)
    chunksList.foreach(chunk => fileBuilder.accept(chunk))
    fileBuilder.build()
    val newChunksList: List[Chunk] = Chunkifier(100, originalFile)

    chunksList.indices.foreach { i => chunksList(i).content should equal(newChunksList(i).content) }
  }
} 

//设置package包名称以及导入依赖的类
package org.bruchez.olivier.dsstoreremover

import java.io.File
import scala.annotation.tailrec

object Files {
  def filesInDirectory(directory: File, recursive: Boolean, includeDirectories: Boolean): Seq[File] = {
    val (directories, files) = Option(directory.listFiles()).fold(Seq[File]())(_.toSeq).partition(_.isDirectory)
    val subDirectoriesAndFiles =
      if (recursive) directories.flatMap(filesInDirectory(_, recursive = true, includeDirectories)) else Seq()
    (if (includeDirectories) directories else Seq()) ++ files ++ subDirectoriesAndFiles
  }

  def isMacOsMetadataFile(file: File): Boolean = {
    val filename = file.getName

    lazy val isDsStoreFile = filename == MacOsDsStoreFilename

    lazy val isMetadataFile = filename.startsWith(MacOsMetadataFilePrefix) && {
      val baseFile = new File(file.getParentFile, filename.substring(MacOsMetadataFilePrefix.length))
      baseFile.exists()
    }

    isDsStoreFile || isMetadataFile
  }

  private val MacOsDsStoreFilename = ".DS_Store"
  private val MacOsMetadataFilePrefix = "._"

  def nonExistingFile(directory: File, baseFilename: String): File = {
    @tailrec
    def nonExistingFile(index: Int): File = {
      val suffix = if (index <= 0) "" else s".$index"

      val fileToTest = new File(directory, baseFilename + suffix)

      if (!fileToTest.exists()) fileToTest else nonExistingFile(index + 1)
    }

    nonExistingFile(index = 0)
  }
} 

//设置package包名称以及导入依赖的类
package org.nason.euler

import java.io.{File, FileWriter}

object EulerUtils
{
  val DataRoot = "/home/sorensjm/workspace/euler/data"
  val DataRoot2 = "/Users/jon/Documents/IdeaProjects/euler-jms-scala/data"

  def writeFile(file: File, content: String) =
    if (file.exists() && !file.canWrite())
      System.err.println("File " + file + " is not writable")
    else {
      val writer = new FileWriter(file, false)
      writer.write(content)
      writer.close()
    }

  def readDataFile( fileName:String ) : Iterator[String] = {
    val file = new File(DataRoot2,fileName)
    if (!file.exists()) {
      System.err.println("Can not find file %s/%s".format(DataRoot2,fileName))
      Array[String]().iterator
    } else {
      io.Source.fromFile(file).getLines()
    }
  }

  
  def timing[F]( f: =>F ) =
  {
    val then = System.nanoTime
    val ans = f
    val now = System.nanoTime
    println( "Took %g sec".format( (now-then).toDouble*1e-9 ) )
    ans
  }
} 

//设置package包名称以及导入依赖的类
package com.commodityvectors.snapshotmatchers

import java.io.File

import org.apache.commons.io.FileUtils
import org.scalatest.{BeforeAndAfterEach, Matchers, fixture}

import scala.util.Try

class SnapshotGenerationSpec extends fixture.WordSpec with Matchers with SnapshotMatcher with BeforeAndAfterEach {

  val snapshotFolder: String = "scalatest-snapshot-matcher-core/src/test/__snapshots__"
  val currentSpecPath: String = s"$snapshotFolder/com/commodityvectors/snapshotmatchers/SnapshotGenerationSpec"

  override def afterEach(): Unit = {
    Try(FileUtils.deleteDirectory(new File(snapshotFolder)))
  }

  "SnapshotMatcher" should {
    "generate snapshot file with expectation" in { implicit test =>
      val value: Int = 1
      value should matchSnapshot[Int]()
      FileUtils.readFileToString(
        new File(s"$currentSpecPath/snapshotmatcher-should-generate-snapshot-file-with-expectation.snap")
      ) shouldEqual "1"
    }

    "generate file with custom id" in { implicit test =>
      val value = 10
      value should matchSnapshot[Int]("customId")
      FileUtils.readFileToString(
        new File(s"$currentSpecPath/customId.snap")
      ) shouldEqual "10"
    }
  }
} 

//设置package包名称以及导入依赖的类
package controllers

import javax.inject._
import play.api._
import play.api.mvc._
import play.api.data._
import play.api.data.Forms._


@Singleton
class ImageCensorontroller @Inject() extends Controller {

  def index(imageId: Long) = Action {
    Ok(views.html.index("Your new application is ready."))
  }

  def save(imageId: Long) = Action(parse.multipartFormData) { request =>
    request.body.file("image").map { image =>
      import java.io.File

      image.ref.moveTo(new File(s"/tmp/faceblock/completed/$imageId"))

      Redirect(routes.ImageViewController.index(imageId))
    }.getOrElse {
      Redirect(routes.ImageCensorController.index).flashing(
        "error" -> "Missing file")
    }
  }
} 

//设置package包名称以及导入依赖的类
package controllers

import javax.inject._
import play.api._
import play.api.mvc._
import play.api.data._
import play.api.data.Forms._


@Singleton
class ImageCensorController @Inject() extends Controller {

  def index = Action {
    Ok(views.html.index("Your new application is ready."))
  }

  def upload = Action(parse.multipartFormData) { request =>
    request.body.file("image").map { image =>
      import java.io.File
      val filename = image.filename
      //Generate some unique id.
      val imageId: Long = 1
      val contentType = image.contentType
      image.ref.moveTo(new File(s"/tmp/faceblock/inprogress/$imageId"))

      Redirect(routes.ImageCensorController.index(imageId))
    }.getOrElse {
      Redirect(routes.ImageUploadController.index).flashing(
        "error" -> "Missing file")
    }
  }
} 

//设置package包名称以及导入依赖的类
package com.softwaremill.modemconnector

import java.io.{DataInputStream, File, FileInputStream}

import com.softwaremill.modemconnector.agwpe.AGWPEFrame
import com.softwaremill.modemconnector.ax25.AX25Frame

object FrameUtils {

  def ax25frameFromFile(filePath: String): AX25Frame = {
    val file: File = new File(this.getClass.getResource(filePath).getPath)
    AX25Frame(AGWPEFrame(new DataInputStream(new FileInputStream(file))).data.get)
  }

  def dataStream(filePath: String): DataInputStream = {
    val file: File = new File(this.getClass.getResource(filePath).getPath)
    new DataInputStream(new FileInputStream(file))
  }
} 

//设置package包名称以及导入依赖的类
import java.io.File

package object common {

  
  def resourceAsStreamFromSrc(resourcePath: List[String]): Option[java.io.InputStream] = {
    val classesDir = new File(getClass.getResource(".").toURI)
    val projectDir = classesDir.getParentFile.getParentFile.getParentFile.getParentFile
    val resourceFile = subFile(projectDir, ("src" :: "main" :: "resources" :: resourcePath): _*)
    if (resourceFile.exists)
      Some(new java.io.FileInputStream(resourceFile))
    else
      None
  }
}