cgit.sxemacs.org Git - packages/blob - xemacs-packages/jde/java/bsh-commands/bsh/commands/whichClass.bsh

   1 import java.util.zip.ZipFile;
   2 import java.util.zip.ZipEntry;
   3
   4 String whichClass(String strClass)
   5 {
   6         String strBootCP = System.getProperty("sun.boot.class.path");
   7         String strCP = System.getProperty("java.class.path");
   8         if (strBootCP != null)
   9         {
  10                 strCP = strCP + File.pathSeparator + strBootCP;
  11         }
  12
  13         return whichClassWithClassPath(strClass, strCP);
  14 }
  15
  16
  17 String whichClassWithClassPath(String strClass, String strCP)
  18 {
  19         String convertName(String str)
  20                 {
  21                         int nLength = str.length();
  22                         StringBuffer strRetVal = new StringBuffer(str);
  23                         for (int nCount = 0; nCount < nLength; nCount++)
  24                         {
  25                                 if (strRetVal.charAt(nCount) == '.')
  26                                 {
  27                                         strRetVal.setCharAt(nCount, File.separatorChar);
  28                                 }
  29                         }
  30
  31                         strRetVal.append(".class");
  32                         return strRetVal.toString();
  33                 }
  34
  35         String convertToZipName(String str)
  36                 {
  37                         int nLength = str.length();
  38                         StringBuffer strRetVal = new StringBuffer(str);
  39                         for (int nCount = 0; nCount < nLength; nCount++)
  40                         {
  41                                 if (strRetVal.charAt(nCount) == '.')
  42                                 {
  43                                         strRetVal.setCharAt(nCount, '/');
  44                                 }
  45                         }
  46
  47                         strRetVal.append(".class");
  48                         return strRetVal.toString();
  49                 }
  50         boolean processEntry(String strFile, String strClass, String strZipName)
  51                 {
  52                         File file = new File(strFile);
  53                         if (file.exists())
  54                                 if (file.isDirectory())
  55                                 {
  56                                         String strPath = strFile + File.separatorChar + strClass;
  57                                         File classFile = new File(strPath);
  58                                         return classFile.exists();
  59                                 }
  60                                 else
  61                                 {
  62                                         try
  63                                         {
  64                                                 ZipFile zip = new ZipFile(file);
  65                                                 ZipEntry found = zip.getEntry(strZipName);
  66                                                 return (found != null);
  67                                         }
  68                                         catch (Exception ex)
  69                                         {
  70                                                 System.out.println(ex.toString());
  71                                         }
  72
  73                                 }
  74                         return false;
  75                 }
  76
  77         String strZipName = convertToZipName(strClass);
  78         String strConvertedName = convertName(strClass);
  79         String token = null;
  80         if (strCP == null)
  81         {
  82                 return null;
  83         }
  84
  85         print("Using classpath " + strCP + "\n\n");
  86         StringTokenizer tokenizer = new StringTokenizer(strCP, File.pathSeparator);
  87         while (tokenizer.hasMoreElements())
  88         {
  89                 token = tokenizer.nextToken();
  90                 if (processEntry(token, strConvertedName, strZipName))
  91                 {
  92                         print("Class " + strClass + " is loaded from " + token);
  93                         return token;
  94                 }
  95         }
  96         print("No definition found for " + strClass);
  97         return null;
  98 }
  99