util/PathNormalize.java

   1
   2 package org.de.metux.util;
   3
   4 import java.io.File;
   5 import java.io.IOException;
   6
   7 public class PathNormalize
   8 {
   9     public static String normalize(String path)
  10     {
  11         if (path==null)
  12             return "";
  13
  14         path = StrReplace.replace("//", "/",
  15                StrReplace.replace("/./", "/", path));
  16
  17         if (path.endsWith("/"))
  18             return path.substring(0,path.length()-1);
  19         else
  20             return path;
  21     }
  22
  23     // normalize and strip off sysroot
  24     public static String normalize_strip_sysroot(String path, String sysroot)
  25     {
  26         sysroot = normalize(sysroot);
  27         path    = normalize(path);
  28
  29         if (path.startsWith(sysroot))
  30             return path.substring(sysroot.length());
  31         else
  32             return path;
  33     }
  34
  35     public static String normalize_add_sysroot(String path, String sysroot)
  36     {
  37         sysroot = normalize(sysroot);
  38         path    = normalize(path);
  39
  40         if (path.startsWith("/") && (!path.startsWith(sysroot)))
  41             return normalize(sysroot+"/"+path);
  42         else
  43             return path;
  44     }
  45
  46     public static String strip_cwd(String path)
  47     {
  48         try
  49         {
  50             return strip_cwd(path,new File(".").getCanonicalPath());
  51         }
  52         catch (IOException e)
  53         {
  54             throw new RuntimeException("File() failed ",e);
  55         }
  56     }
  57
  58     public static String strip_cwd(String path, String cwd)
  59     {
  60         int pos;
  61
  62         path = normalize(path);
  63         cwd  = normalize(cwd);
  64
  65         System.err.println("==>strip_cwd: path=\""+path+"\"");
  66         System.err.println("==>            cwd=\""+cwd+"\"");
  67
  68         if ((pos=path.indexOf(cwd))==0)
  69             return normalize("./"+path.substring(cwd.length()));
  70         else
  71             return path;
  72     }
  73 }