source/mir/misc/FileUtil.java

   1
   2 /*
   3  * put your module comment here
   4  */
   5
   6
   7 package mir.misc;
   8
   9 import  java.lang.*;
  10 import  java.util.*;
  11 import  java.io.*;
  12 import  java.net.*;
  13 import  freemarker.template.*;
  14 import  mir.entity.*;
  15 import  mir.storage.*;
  16 import javax.servlet.http.*;
  17
  18
  19 /**
  20  * Hilfsklasse zum Mergen von Template und Daten
  21  */
  22 public final class FileUtil {
  23
  24     private static boolean fileNameMapLoaded = false;
  25     private static FileNameMap fileNameMap;
  26     private static String producerStorageRoot;
  27
  28     //
  29     // Initialisierung
  30
  31     static {
  32       System.setProperty("content.types.user.table", MirConfig.getProp("Home")+"content-types.properties");
  33       fileNameMap = sun.net.www.MimeTable.loadTable();
  34       producerStorageRoot = MirConfig.getProp("Producer.StorageRoot");
  35     }
  36
  37   /**
  38    * Privater Konstruktor, um versehentliche Instantiierung zu verhindern
  39    */
  40   private FileUtil () {
  41   }
  42
  43   public static boolean write(String filename, byte[] in) {
  44
  45                 boolean retVal = false;
  46
  47                 if (in!=null) {
  48                         try {
  49                 File f = null;
  50                 f = new File(filename);
  51                                 File dir = new File(f.getParent());
  52                                 dir.mkdirs();
  53
  54                                 FileOutputStream outStream;
  55                                 outStream = new FileOutputStream(f);
  56                                 outStream.write(in);
  57                                 outStream.close();
  58                                 retVal = true;
  59                         } catch(IOException exception) {}
  60         }
  61                 return retVal;
  62         }
  63
  64   public static boolean read(String filename, byte out[]) {
  65
  66         File f = null;
  67         f = new File(filename);
  68
  69                 if (f.exists()) {
  70                         try {
  71                 if (out.length != f.length())
  72                     return false;
  73                                 FileInputStream inStream;
  74                                 inStream = new FileInputStream(f);
  75                                 inStream.read(out);
  76                                 inStream.close();
  77                         } catch(IOException exception) {
  78                 return false;
  79             }
  80         } else {
  81             return false;
  82         }
  83                 return true;
  84         }
  85
  86     public static long getSize(String filename) {
  87         File f = null;
  88         f = new File(filename);
  89         long l=0;
  90
  91                 if (f.exists()) {
  92                 return f.length();
  93         } else {
  94             return -1;
  95         }
  96     }
  97
  98     private static FileNameMap getFileNameMap() {
  99         if ((fileNameMap == null) && !fileNameMapLoaded) {
 100             fileNameMap = sun.net.www.MimeTable.loadTable();
 101             fileNameMapLoaded = true;
 102         }
 103
 104         return new FileNameMap() {
 105             private FileNameMap map = fileNameMap;
 106             public String getContentTypeFor(String fileName) {
 107                 return map.getContentTypeFor(fileName);
 108             }
 109         };
 110     }
 111
 112     public static void setFileNameMap(FileNameMap map) {
 113         fileNameMap = map;
 114     }
 115
 116     public static String guessContentTypeFromName(String fname) {
 117         String contentType = null;
 118
 119         contentType = getFileNameMap().getContentTypeFor(fname);
 120
 121         return contentType;
 122     }
 123
 124
 125
 126
 127 }