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     throws IOException {
  45
  46                 boolean retVal = false;
  47
  48                 if (in!=null) {
  49                         try {
  50                 File f = null;
  51                 f = new File(filename);
  52                                 File dir = new File(f.getParent());
  53                                 dir.mkdirs();
  54
  55                                 FileOutputStream outStream;
  56                                 outStream = new FileOutputStream(f);
  57                                 outStream.write(in);
  58                                 outStream.close();
  59                                 retVal = true;
  60                         } catch(IOException e) {
  61                 throw new IOException(e.toString());
  62             }
  63         }
  64                 return retVal;
  65         }
  66
  67   public static boolean read(String filename, byte out[])
  68     throws IOException {
  69
  70         File f = null;
  71         f = new File(filename);
  72
  73                 if (f.exists()) {
  74                         try {
  75                 if (out.length != f.length())
  76                     return false;
  77                                 FileInputStream inStream;
  78                                 inStream = new FileInputStream(f);
  79                                 inStream.read(out);
  80                                 inStream.close();
  81                         } catch(IOException e) {
  82                 throw new IOException(e.toString());
  83             }
  84         } else {
  85             return false;
  86         }
  87                 return true;
  88         }
  89
  90     public static long getSize(String filename) {
  91         File f = null;
  92         f = new File(filename);
  93         long l=0;
  94
  95                 if (f.exists()) {
  96                 return f.length();
  97         } else {
  98             return -1;
  99         }
 100     }
 101
 102     private static FileNameMap getFileNameMap() {
 103         if ((fileNameMap == null) && !fileNameMapLoaded) {
 104             fileNameMap = sun.net.www.MimeTable.loadTable();
 105             fileNameMapLoaded = true;
 106         }
 107
 108         return new FileNameMap() {
 109             private FileNameMap map = fileNameMap;
 110             public String getContentTypeFor(String fileName) {
 111                 return map.getContentTypeFor(fileName);
 112             }
 113         };
 114     }
 115
 116     public static void setFileNameMap(FileNameMap map) {
 117         fileNameMap = map;
 118     }
 119
 120     public static String guessContentTypeFromName(String fname) {
 121         String contentType = null;
 122
 123         contentType = getFileNameMap().getContentTypeFor(fname);
 124
 125         return contentType;
 126     }
 127
 128
 129
 130
 131 }