| commit | author | age | ||
| 020a97 | 1 | package de.uhilger.httpserver.cm; |
| U | 2 | |
| 3 | import java.io.File; | |
| 4 | import java.io.FileOutputStream; | |
| 5 | import java.io.IOException; | |
| 6 | import java.io.InputStream; | |
| 7 | import java.util.Enumeration; | |
| 8 | import java.util.zip.ZipEntry; | |
| 9 | import java.util.zip.ZipFile; | |
| 10 | ||
| 11 | /** | |
| 12 | * | |
| 13 | * @author ulli | |
| 14 | */ | |
| 15 | public class Unzipper { | |
| 16 | /* --------- ZIP entpacken ---------------- */ | |
| 17 | ||
| 18 | public String extractZipfile(String fName, String relPath, String base) { | |
| 19 | //logger.fine("fName: " + fName + ", relPath: " + relPath); | |
| 20 | String result = null; | |
| 21 | if (!relPath.startsWith(".")) { | |
| 22 | try { | |
| 23 | //File targetDir = new File(fileBase, relPath); | |
| 24 | //File targetDir = getTargetDir(relPath); | |
| 25 | File archive = new File(base, fName); | |
| 26 | if(extract(archive)) { | |
| 27 | result = "ok"; | |
| 28 | } else { | |
| 29 | result = "error while extracting"; | |
| 30 | } | |
| 31 | } catch(Exception ex) { | |
| 32 | result = ex.getLocalizedMessage(); | |
| 33 | //logger.log(Level.SEVERE, ex.getLocalizedMessage(), ex); | |
| 34 | } | |
| 35 | } else { | |
| 36 | result = "Falsche relative Pfadangabe."; | |
| 37 | } | |
| 38 | return result; | |
| 39 | } | |
| 40 | ||
| 41 | /** | |
| 42 | * extract a given ZIP archive to the folder respective archive resides in | |
| 43 | * @param archive the archive to extract | |
| 44 | * @throws Exception | |
| 45 | */ | |
| 46 | private boolean extract(File archive) throws Exception { | |
| 47 | ZipFile zipfile = new ZipFile(archive); | |
| 48 | Enumeration en = zipfile.entries(); | |
| 49 | while(en.hasMoreElements()) { | |
| 50 | ZipEntry zipentry = (ZipEntry) en.nextElement(); | |
| 51 | unzip(zipfile, zipentry, archive.getParent()); | |
| 52 | } | |
| 53 | zipfile.close(); | |
| 54 | return true; | |
| 55 | } | |
| 56 | ||
| 57 | /** | |
| 58 | * unzip a given entry of a given zip file to a given location | |
| 59 | * @param zipfile the zip file to read an entry from | |
| 60 | * @param zipentry the zip entry to read | |
| 61 | * @param destPath the path to the destination location for the extracted content | |
| 62 | * @throws IOException | |
| 63 | */ | |
| 64 | private void unzip(ZipFile zipfile, ZipEntry zipentry, String destPath) throws IOException { | |
| 65 | byte buf[] = new byte[1024]; | |
| 66 | InputStream is = zipfile.getInputStream(zipentry); | |
| 67 | String outFileName = destPath + File.separator + zipentry.getName(); | |
| 68 | File file = new File(outFileName); | |
| 69 | if(!zipentry.isDirectory()) { | |
| 70 | file.getParentFile().mkdirs(); | |
| 71 | if(!file.exists()) | |
| 72 | file.createNewFile(); | |
| 73 | FileOutputStream fos = new FileOutputStream(file); | |
| 74 | int i = is.read(buf, 0, 1024); | |
| 75 | while(i > -1) { | |
| 76 | fos.write(buf, 0, i); | |
| 77 | i = is.read(buf, 0, 1024); | |
| 78 | } | |
| 79 | fos.close(); | |
| 80 | is.close(); | |
| 81 | } else { | |
| 82 | file.mkdirs(); | |
| 83 | } | |
| 84 | } | |
| 85 | ||
| 86 | ||
| 87 | } | |
