Mercurial > jdk8-mips64-public > langtools / file revision

 /*

  * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.

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

  *

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

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

  * published by the Free Software Foundation.  Oracle designates this

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

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

  *

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

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

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

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

  * accompanied this code).

  *

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

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

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

  *

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

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

  * questions.

  */

 package com.sun.tools.sjavac;

 import java.io.File;

 import java.util.Arrays;

 import java.util.HashSet;

 import java.util.Set;

 import java.util.StringTokenizer;

 /**

  * Utilities.

  *

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

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

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

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

  */

 public class Util {

     public static String toFileSystemPath(String pkgId) {

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

         String pn;

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

             // When the module is the default empty module.

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

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

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

         } else {

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

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

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

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

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

         }

         return pn;

     }

     public static String justPackageName(String pkgName) {

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

         assert(c != -1);

         return pkgName.substring(c+1);

     }

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

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

         if (p == -1) return null;

         p+=opName.length()+1;

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

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

         return s.substring(p, pe);

     }

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

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

         if (p == -1) return 0;

         p+=opName.length()+1;

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

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

         int v = 0;

         try {

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

         } catch (Exception e) {}

         return v;

     }

     /**

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

      * For example to only had portfile remaining from:

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

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

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

      *

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

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

      * @param s The option settings string.

      */

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

         StringBuilder sb = new StringBuilder();

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

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

         while (st.hasMoreTokens()) {

             String o = st.nextToken();

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

             if (p>0) {

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

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

                 if (allowedSubOptions.contains(key)) {

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

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

                 }

             }

         }

         return sb.toString();

     }

     /**

      * Convenience method to create a set with strings.

      */

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

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

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

         return set;

     }

     /**

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

      * comparison.

      *

      * @param file File name to normalize

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

      *         otherwise the original string.

      */

     public static String normalizeDriveLetter(String file) {

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

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

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

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

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

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

                    + file.substring(2);

         }

         return file;

     }

     /**

      * Locate the setting for the server properties.

      */

     public static String findServerSettings(String[] args) {

         for (String s : args) {

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

                 return s;

             }

         }

         return null;

     }

 }