1 /*

     2  * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

    26 package com.sun.tools.sjavac;

    27 

    28 import java.io.File;

    29 import java.util.Arrays;

    30 import java.util.HashSet;

    31 import java.util.Set;

    32 import java.util.StringTokenizer;

    33 

    34 /**

    35  * Utilities.

    36  *

    37  * <p><b>This is NOT part of any supported API.

    38  * If you write code that depends on this, you do so at your own

    39  * risk.  This code and its internal interfaces are subject to change

    40  * or deletion without notice.</b></p>

    41  */

    42 public class Util {

    43 

    44     public static String toFileSystemPath(String pkgId) {

    45         if (pkgId == null || pkgId.length()==0) return null;

    46         String pn;

    47         if (pkgId.charAt(0) == ':') {

    48             // When the module is the default empty module.

    49             // Do not prepend the module directory, because there is none.

    50             // Thus :java.foo.bar translates to java/foo/bar (or \)

    51             pn = pkgId.substring(1).replace('.',File.separatorChar);

    52         } else {

    53             // There is a module. Thus jdk.base:java.foo.bar translates

    54             // into jdk.base/java/foo/bar

    55             int cp = pkgId.indexOf(':');

    56             String mn = pkgId.substring(0,cp);

    57             pn = mn+File.separatorChar+pkgId.substring(cp+1).replace('.',File.separatorChar);

    58         }

    59         return pn;

    60     }

    61 

    62     public static String justPackageName(String pkgName) {

    63         int c = pkgName.indexOf(":");

    64         assert(c != -1);

    65         return pkgName.substring(c+1);

    66     }

    67 

    68     public static String extractStringOption(String opName, String s) {

    69         int p = s.indexOf(opName+"=");

    70         if (p == -1) return null;

    71         p+=opName.length()+1;

    72         int pe = s.indexOf(',', p);

    73         if (pe == -1) pe = s.length();

    74         return s.substring(p, pe);

    75     }

    76 

    77     public static int extractIntOption(String opName, String s) {

    78         int p = s.indexOf(opName+"=");

    79         if (p == -1) return 0;

    80         p+=opName.length()+1;

    81         int pe = s.indexOf(',', p);

    82         if (pe == -1) pe = s.length();

    83         int v = 0;

    84         try {

    85             v = Integer.parseInt(s.substring(p, pe));

    86         } catch (Exception e) {}

    87         return v;

    88     }

    89 

    90     /**

    91      * Clean out unwanted sub options supplied inside a primary option.

    92      * For example to only had portfile remaining from:

    93      *    settings="--server:id=foo,portfile=bar"

    94      * do settings = cleanOptions("--server:",Util.set("-portfile"),settings);

    95      *    now settings equals "--server:portfile=bar"

    96      *

    97      * @param optionPrefix The option name, including colon, eg --server:

    98      * @param allowsSubOptions A set of the allowed sub options, id portfile etc.

    99      * @param s The option settings string.

   100      */

   101     public static String cleanSubOptions(String optionPrefix, Set<String> allowedSubOptions, String s) {

   102         StringBuilder sb = new StringBuilder();

   103         if (!s.startsWith(optionPrefix)) return "";

   104         StringTokenizer st = new StringTokenizer(s.substring(optionPrefix.length()), ",");

   105         while (st.hasMoreTokens()) {

   106             String o = st.nextToken();

   107             int p = o.indexOf('=');

   108             if (p>0) {

   109                 String key = o.substring(0,p);

   110                 String val = o.substring(p+1);

   111                 if (allowedSubOptions.contains(key)) {

   112                     if (sb.length() > 0) sb.append(',');

   113                     sb.append(key+"="+val);

   114                 }

   115             }

   116         }

   117         return sb.toString();

   118     }

   119 

   120     /**

   121      * Convenience method to create a set with strings.

   122      */

   123     public static Set<String> set(String... ss) {

   124         Set<String> set = new HashSet<String>();

   125         set.addAll(Arrays.asList(ss));

   126         return set;

   127     }

   128 

   129     /**

   130      * Normalize windows drive letter paths to upper case to enable string

   131      * comparison.

   132      *

   133      * @param file File name to normalize

   134      * @return The normalized string if file has a drive letter at the beginning,

   135      *         otherwise the original string.

   136      */

   137     public static String normalizeDriveLetter(String file) {

   138         if (file.length() > 2 && file.charAt(1) == ':') {

   139             return Character.toUpperCase(file.charAt(0)) + file.substring(1);

   140         } else if (file.length() > 3 && file.charAt(0) == '*'

   141                    && file.charAt(2) == ':') {

   142             // Handle a wildcard * at the beginning of the string.

   143             return file.substring(0, 1) + Character.toUpperCase(file.charAt(1))

   144                    + file.substring(2);

   145         }

   146         return file;

   147     }

   148 

   149     /**

   150      * Locate the setting for the server properties.

   151      */

   152     public static String findServerSettings(String[] args) {

   153         for (String s : args) {

   154             if (s.startsWith("--server:")) {

   155                 return s;

   156             }

   157         }

   158         return null;

   159     }

   160 }