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[Scala][Zip] unzip in scala
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| import java.util.zip.ZipFile | |
| import java.io.FileInputStream | |
| import java.io.FileOutputStream | |
| import scala.collection.JavaConversions._ | |
| import java.util.zip.ZipEntry | |
| import java.io.InputStream | |
| import java.io.OutputStream | |
| import java.io.File | |
| class ZipArchive { | |
| val BUFSIZE = 4096 | |
| val buffer = new Array[Byte](BUFSIZE) | |
| def unZip(source: String, targetFolder: String) = { | |
| val zipFile = new ZipFile(source) | |
| unzipAllFile(zipFile.entries.toList, getZipEntryInputStream(zipFile)_, new File(targetFolder)) | |
| } | |
| def getZipEntryInputStream(zipFile: ZipFile)(entry: ZipEntry) = zipFile.getInputStream(entry) | |
| def unzipAllFile(entryList: List[ZipEntry], inputGetter: (ZipEntry) => InputStream, targetFolder: File): Boolean = { | |
| entryList match { | |
| case entry :: entries => | |
| if (entry.isDirectory) | |
| new File(targetFolder, entry.getName).mkdirs | |
| else | |
| saveFile(inputGetter(entry), new FileOutputStream(new File(targetFolder, entry.getName))) | |
| unzipAllFile(entries, inputGetter, targetFolder) | |
| case _ => | |
| true | |
| } | |
| } | |
| def saveFile(fis: InputStream, fos: OutputStream) = { | |
| writeToFile(bufferReader(fis)_, fos) | |
| fis.close | |
| fos.close | |
| } | |
| def bufferReader(fis: InputStream)(buffer: Array[Byte]) = (fis.read(buffer), buffer) | |
| def writeToFile(reader: (Array[Byte]) => Tuple2[Int, Array[Byte]], fos: OutputStream): Boolean = { | |
| val (length, data) = reader(buffer) | |
| if (length >= 0) { | |
| fos.write(data, 0, length) | |
| writeToFile(reader, fos) | |
| } else | |
| true | |
| } | |
| } |
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