Ignore:
Timestamp:
2003-05-27T15:40:47+12:00 (21 years ago)
Author:
mdewsnip
Message:

Fixed tabbing.

File:
1 edited

Legend:

Unmodified
Added
Removed

  • trunk/gli/src/org/greenstone/gatherer/util/WinRegistry.java

    r4293 r4364  
    5959    /** A constant used to interpret the return of a native function as successful. */
    6060    private final static int NATIVE_HANDLE = 0;
    61     /** A constant used to interpret the return of a native function as an error. */
     61    /** A constant used to interpret the return of a native function as an error. */
    6262    private final static int ERROR_CODE = 1;
    6363    /** Windows error codes. */
    … …  
    6565    /** HKEY_LOCAL_MACHINE address. */
    6666    private final static int HKEY_LOCAL_MACHINE = 0x80000002;
    67     /** Called to build a command string that will launch the given file in its associated program according to the windows registry.
    68       * @param filename The name of a file, including the required extension, as a <strong>String</strong>.
    69       * @return Another <strong>String</strong> containing a command line which, when run in a command shell, will launch an external application to view this file.
    70       */
     67    /** Called to build a command string that will launch the given file in its associated program according to the windows registry.
     68     * @param filename The name of a file, including the required extension, as a <strong>String</strong>.
     69     * @return Another <strong>String</strong> containing a command line which, when run in a command shell, will launch an external application to view this file.
     70     */
    7171    public static String openCommand(String filename) {
    72           if(filename.indexOf(".") != -1) {
    73                 String extension = filename.substring(filename.indexOf("."));
    74                 try {
    75                      // First find the name of the file type that is associated with this extension.
    76                      String file_type = getValue("Software\\CLASSES\\" + extension);
    77                      // Then if we got a type, get the open command from its shell reference.
    78                      ///ystem.err.println("Searching for file-type = " + file_type);
    79                      if(file_type != null) {
    80                           String raw = getValue("Software\\CLASSES\\" + file_type + "\\shell\\open\\command");
    81                           //Replace "%1" with "filename"
    82                           if(raw.indexOf("%1") != -1) {
    83                                 String prefix = raw.substring(0, raw.indexOf("%1"));
    84                                 if(!prefix.endsWith("\"")) {
    85                                     prefix = prefix + "\"";
    86                                 }
    87                                 String suffix = raw.substring(raw.indexOf("%1") + 2);
    88                                 if(!suffix.endsWith("\"")) {
    89                                     suffix = suffix + "\"";
    90                                 }
    91                                 return prefix + filename + suffix;
    92                           }
    93                           // Arg. There is a windows flag called /dde, which if it exists in a command tells it to use the filename (hence the meaningful name dde eh?)
    94                           else if(raw.indexOf("/dde") != -1) {
    95                                 String prefix = raw.substring(0, raw.indexOf("/dde"));
    96                                 if(!prefix.endsWith("\"")) {
    97                                     prefix = prefix + "\"";
    98                                 }
    99                                 String suffix = raw.substring(raw.indexOf("/dde") + 4);
    100                                 if(!suffix.endsWith("\"")) {
    101                                     suffix = suffix + "\"";
    102                                 }
    103                                 return prefix + filename + suffix;
    104                           }
    105                           // No file parameter. Append the file to the command and hope for the best.
    106                           return raw + " \"" + filename + "\"";
    107                      }
    108                 }
    109                 catch (Exception error) {
    110                      ///ystem.err.println("No such value.");
    111                      //error.printStackTrace();
    112                 }
    113           }
    114           return null;
    115     }
    116     /** Attempts to retrieve the value at the location given from the registry using Reflection.
    117       * @param path The path to the desired key as a <strong>String</strong>.
    118       * @return The value found at the indicated key as a <strong>String</strong>.
    119       */
    120     private static String getValue(String path)
    121           throws ClassNotFoundException, Exception, NoSuchMethodException {
    122           ///ystem.err.println("Get value " + path);
    123           byte[] WINDOWS_ROOT_PATH = stringToByteArray(path);
    124           Class theClass = Class.forName("java.util.prefs.WindowsPreferences");
    125           int[] result = openKey(HKEY_LOCAL_MACHINE, WINDOWS_ROOT_PATH, KEY_QUERY_VALUE);
    126           if (result[ERROR_CODE] != ERROR_SUCCESS) {
    127                 throw new Exception("Path not found!");
    128           }
    129           int native_handle = result[NATIVE_HANDLE];
    130           Method m = theClass.getDeclaredMethod("WindowsRegQueryValueEx", new Class[]{int.class, byte[].class});
    131           m.setAccessible(true);
    132           byte[] windows_name = toWindowsName("");
    133           Object value = m.invoke(null, new Object[]{new Integer(native_handle), windows_name});
    134           WindowsRegCloseKey(native_handle);
    135           if (value == null) {
    136                 throw new Exception("Path found. Key not found.");
    137           }
    138           byte[] origBuffer = (byte[]) value;
    139           byte[] destBuffer = new byte[origBuffer.length - 1];
    140           System.arraycopy(origBuffer, 0, destBuffer, 0, origBuffer.length - 1);
    141           return new String(destBuffer);
    142     }
    143     /** Closes the reference (and hence the instantiated objects) to a certain entry within the registry. Do this or suffer massive memory leaks.
    144       * @param nativeHandle A reference to the piece of memory containing an inspected windows key-value pair.
    145       * @return The status code returned from closing the key, as an <i>int</i>.
    146       */
    147     public static int WindowsRegCloseKey(int nativeHandle)
    148           throws Exception {
    149           Class theClass = Class.forName("java.util.prefs.WindowsPreferences");
    150           Method m = theClass.getDeclaredMethod("WindowsRegCloseKey", new Class[]{int.class});
    151           m.setAccessible(true);
    152           Object ret = m.invoke(null, new Object[]{new Integer(nativeHandle)});
    153           return ((Integer) ret).intValue();
    154     }
    155     /** Attempts to open a certain key-value pair from the windows registry, from within a certain region (or HKEY).
    156       * @param hkey An <i>int</i> which is the offset for a certain group within the registry.
    157       * @param windowsAbsolutePath A <i>byte[]</i> containing the path to the desired key, relative to the given HKEY.
    158       * @param securityMask A mask needed to read values from the registry, as an <i>int</i>.
    159       * @return An <i>int[]</i> pair, the first of which is the reference to the indicated key if no error occured, and the second of which reports the end error state of the registry open attempt.
    160       */
    161     public static int[] openKey(int hkey, byte[] windowsAbsolutePath, int securityMask)
    162           throws Exception {
    163           Class theClass = Class.forName("java.util.prefs.WindowsPreferences");
    164           Method m = theClass.getDeclaredMethod("WindowsRegOpenKey", new Class[]{int.class, byte[].class, int.class});
    165           m.setAccessible(true);
    166           Object ret = m.invoke(null, new Object[]{new Integer(hkey), windowsAbsolutePath, new Integer(securityMask)});
    167           return (int[]) ret;
    168     }
    169     /** Converts a string to a byte array. Duh!
    170       * @param str The <strong>String</strong> to be converted.
    171       * @return A <i>byte[]</i> containing orderer characters from the String.
    172       */
    173     private static byte[] stringToByteArray(String str) {
    174           byte[] result = new byte[str.length() + 1];
    175           for (int i = 0; i < str.length(); i++) {
    176                 result[i] = (byte) str.charAt(i);
    177           }
    178           result[str.length()] = 0;
    179           return result;
    180     }
     72    if(filename.indexOf(".") != -1) {
     73        String extension = filename.substring(filename.indexOf("."));
     74        try {
     75        // First find the name of the file type that is associated with this extension.
     76        String file_type = getValue("Software\\CLASSES\\" + extension);
     77        // Then if we got a type, get the open command from its shell reference.
     78        ///ystem.err.println("Searching for file-type = " + file_type);
     79        if(file_type != null) {
     80            String raw = getValue("Software\\CLASSES\\" + file_type + "\\shell\\open\\command");
     81            //Replace "%1" with "filename"
     82            if(raw.indexOf("%1") != -1) {
     83            String prefix = raw.substring(0, raw.indexOf("%1"));
     84            if(!prefix.endsWith("\"")) {
     85                prefix = prefix + "\"";
     86            }
     87            String suffix = raw.substring(raw.indexOf("%1") + 2);
     88            if(!suffix.endsWith("\"")) {
     89                suffix = suffix + "\"";
     90            }
     91            return prefix + filename + suffix;
     92            }
     93            // Arg. There is a windows flag called /dde, which if it exists in a command tells it to use the filename (hence the meaningful name dde eh?)
     94            else if(raw.indexOf("/dde") != -1) {
     95            String prefix = raw.substring(0, raw.indexOf("/dde"));
     96            if(!prefix.endsWith("\"")) {
     97                prefix = prefix + "\"";
     98            }
     99            String suffix = raw.substring(raw.indexOf("/dde") + 4);
     100            if(!suffix.endsWith("\"")) {
     101                suffix = suffix + "\"";
     102            }
     103            return prefix + filename + suffix;
     104            }
     105            // No file parameter. Append the file to the command and hope for the best.
     106            return raw + " \"" + filename + "\"";
     107        }
     108        }
     109        catch (Exception error) {
     110        ///ystem.err.println("No such value.");
     111        //error.printStackTrace();
     112        }
     113    }
     114    return null;
     115    }
     116    /** Attempts to retrieve the value at the location given from the registry using Reflection.
     117     * @param path The path to the desired key as a <strong>String</strong>.
     118     * @return The value found at the indicated key as a <strong>String</strong>.
     119     */
     120    private static String getValue(String path)
     121    throws ClassNotFoundException, Exception, NoSuchMethodException {
     122    ///ystem.err.println("Get value " + path);
     123    byte[] WINDOWS_ROOT_PATH = stringToByteArray(path);
     124    Class theClass = Class.forName("java.util.prefs.WindowsPreferences");
     125    int[] result = openKey(HKEY_LOCAL_MACHINE, WINDOWS_ROOT_PATH, KEY_QUERY_VALUE);
     126    if (result[ERROR_CODE] != ERROR_SUCCESS) {
     127        throw new Exception("Path not found!");
     128    }
     129    int native_handle = result[NATIVE_HANDLE];
     130    Method m = theClass.getDeclaredMethod("WindowsRegQueryValueEx", new Class[]{int.class, byte[].class});
     131    m.setAccessible(true);
     132    byte[] windows_name = toWindowsName("");
     133    Object value = m.invoke(null, new Object[]{new Integer(native_handle), windows_name});
     134    WindowsRegCloseKey(native_handle);
     135    if (value == null) {
     136        throw new Exception("Path found. Key not found.");
     137    }
     138    byte[] origBuffer = (byte[]) value;
     139    byte[] destBuffer = new byte[origBuffer.length - 1];
     140    System.arraycopy(origBuffer, 0, destBuffer, 0, origBuffer.length - 1);
     141    return new String(destBuffer);
     142    }
     143    /** Closes the reference (and hence the instantiated objects) to a certain entry within the registry. Do this or suffer massive memory leaks.
     144     * @param nativeHandle A reference to the piece of memory containing an inspected windows key-value pair.
     145     * @return The status code returned from closing the key, as an <i>int</i>.
     146     */
     147    public static int WindowsRegCloseKey(int nativeHandle)
     148    throws Exception {
     149    Class theClass = Class.forName("java.util.prefs.WindowsPreferences");
     150    Method m = theClass.getDeclaredMethod("WindowsRegCloseKey", new Class[]{int.class});
     151    m.setAccessible(true);
     152    Object ret = m.invoke(null, new Object[]{new Integer(nativeHandle)});
     153    return ((Integer) ret).intValue();
     154    }
     155    /** Attempts to open a certain key-value pair from the windows registry, from within a certain region (or HKEY).
     156     * @param hkey An <i>int</i> which is the offset for a certain group within the registry.
     157     * @param windowsAbsolutePath A <i>byte[]</i> containing the path to the desired key, relative to the given HKEY.
     158     * @param securityMask A mask needed to read values from the registry, as an <i>int</i>.
     159     * @return An <i>int[]</i> pair, the first of which is the reference to the indicated key if no error occured, and the second of which reports the end error state of the registry open attempt.
     160     */
     161    public static int[] openKey(int hkey, byte[] windowsAbsolutePath, int securityMask)
     162    throws Exception {
     163    Class theClass = Class.forName("java.util.prefs.WindowsPreferences");
     164    Method m = theClass.getDeclaredMethod("WindowsRegOpenKey", new Class[]{int.class, byte[].class, int.class});
     165    m.setAccessible(true);
     166    Object ret = m.invoke(null, new Object[]{new Integer(hkey), windowsAbsolutePath, new Integer(securityMask)});
     167    return (int[]) ret;
     168    }
     169    /** Converts a string to a byte array. Duh!
     170     * @param str The <strong>String</strong> to be converted.
     171     * @return A <i>byte[]</i> containing orderer characters from the String.
     172     */
     173    private static byte[] stringToByteArray(String str) {
     174    byte[] result = new byte[str.length() + 1];
     175    for (int i = 0; i < str.length(); i++) {
     176        result[i] = (byte) str.charAt(i);
     177    }
     178    result[str.length()] = 0;
     179    return result;
     180    }
    181181     
    182     private static String toJavaValueString(byte[] windowsNameArray) {
    183           // Use modified native2ascii algorithm
    184           String windowsName = byteArrayToString(windowsNameArray);
    185           StringBuffer javaName = new StringBuffer();
    186           char ch;
    187           for (int i = 0; i < windowsName.length(); i++) {
    188                 if ((ch = windowsName.charAt(i)) == '/') {
    189                      char next = ' ';
     182    private static String toJavaValueString(byte[] windowsNameArray) {
     183    // Use modified native2ascii algorithm
     184    String windowsName = byteArrayToString(windowsNameArray);
     185    StringBuffer javaName = new StringBuffer();
     186    char ch;
     187    for (int i = 0; i < windowsName.length(); i++) {
     188        if ((ch = windowsName.charAt(i)) == '/') {
     189        char next = ' ';
    190190                     
    191                      if (windowsName.length() > i + 1 &&
    192                           (next = windowsName.charAt(i + 1)) == 'u') {
    193                           if (windowsName.length() < i + 6) {
    194                                 break;
    195                           } else {
    196                                 ch = (char) Integer.parseInt
    197                                     (windowsName.substring(i + 2, i + 6), 16);
    198                                 i += 5;
    199                           }
    200                      } else
    201                           if ((windowsName.length() > i + 1) &&
    202                                 ((windowsName.charAt(i + 1)) >= 'A') && (next <= 'Z')) {
    203                                 ch = next;
    204                                 i++;
    205                           } else if ((windowsName.length() > i + 1) &&
    206                                         (next == '/')) {
    207                                 ch = '\\';
    208                                 i++;
    209                           }
    210                 } else if (ch == '\\') {
    211                      ch = '/';
    212                 }
    213                 javaName.append(ch);
    214           }
    215           return javaName.toString();
    216     }
    217     /** */
    218     private static String byteArrayToString(byte[] array) {
    219           StringBuffer result = new StringBuffer();
    220           for (int i = 0; i < array.length - 1; i++) {
    221                 result.append((char) array[i]);
    222           }
    223           return result.toString();
    224     }
    225     /** Magics the name of a certain path component from a Java String to the unique string windows requires.
    226       * @param javaName The name of a path component as a <strong>String</strong>.
    227       * @return A <i>byte[]</i> containing the translated string.
    228       */
    229     private static byte[] toWindowsName(String javaName) {
    230           StringBuffer windowsName = new StringBuffer();
    231           for (int i = 0; i < javaName.length(); i++) {
    232                 char ch = javaName.charAt(i);
    233                 if ((ch < 0x0020) || (ch > 0x007f)) {
    234                      throw new RuntimeException("Unable to convert to Windows name");
    235                 }
    236                 if (ch == '\\') {
    237                      windowsName.append("//");
    238                 } else if (ch == '/') {
    239                      windowsName.append('\\');
    240                 } else if ((ch >= 'A') && (ch <= 'Z')) {
    241                      windowsName.append("/" + ch);
    242                 } else {
    243                      windowsName.append(ch);
    244                 }
    245           }
    246           return stringToByteArray(windowsName.toString());
    247     }
     191        if (windowsName.length() > i + 1 &&
     192            (next = windowsName.charAt(i + 1)) == 'u') {
     193            if (windowsName.length() < i + 6) {
     194            break;
     195            } else {
     196            ch = (char) Integer.parseInt
     197                (windowsName.substring(i + 2, i + 6), 16);
     198            i += 5;
     199            }
     200        } else
     201            if ((windowsName.length() > i + 1) &&
     202            ((windowsName.charAt(i + 1)) >= 'A') && (next <= 'Z')) {
     203            ch = next;
     204            i++;
     205            } else if ((windowsName.length() > i + 1) &&
     206                  (next == '/')) {
     207            ch = '\\';
     208            i++;
     209            }
     210        } else if (ch == '\\') {
     211        ch = '/';
     212        }
     213        javaName.append(ch);
     214    }
     215    return javaName.toString();
     216    }
     217    /** */
     218    private static String byteArrayToString(byte[] array) {
     219    StringBuffer result = new StringBuffer();
     220    for (int i = 0; i < array.length - 1; i++) {
     221        result.append((char) array[i]);
     222    }
     223    return result.toString();
     224    }
     225    /** Magics the name of a certain path component from a Java String to the unique string windows requires.
     226     * @param javaName The name of a path component as a <strong>String</strong>.
     227     * @return A <i>byte[]</i> containing the translated string.
     228     */
     229    private static byte[] toWindowsName(String javaName) {
     230    StringBuffer windowsName = new StringBuffer();
     231    for (int i = 0; i < javaName.length(); i++) {
     232        char ch = javaName.charAt(i);
     233        if ((ch < 0x0020) || (ch > 0x007f)) {
     234        throw new RuntimeException("Unable to convert to Windows name");
     235        }
     236        if (ch == '\\') {
     237        windowsName.append("//");
     238        } else if (ch == '/') {
     239        windowsName.append('\\');
     240        } else if ((ch >= 'A') && (ch <= 'Z')) {
     241        windowsName.append("/" + ch);
     242        } else {
     243        windowsName.append(ch);
     244        }
     245    }
     246    return stringToByteArray(windowsName.toString());
     247    }
    248248}
Note: See TracChangeset for help on using the changeset viewer.