1 /*

     2  * Copyright (c) 1998, 2003, 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.doclets.internal.toolkit.util;

    27 

    28 import java.io.File;

    29 

    30 /**

    31  * This class is used to represent a source path which can contain only

    32  * directories no zip files. If a zip file is specified in the command line it

    33  * will not get reflected in the SourcePath.

    34  *

    35  * This code is not part of an API.

    36  * It is implementation that is subject to change.

    37  * Do not use it as an API

    38  *

    39  * @author Atul M Dambalkar

    40  */

    41 public

    42     class SourcePath {

    43     private final char dirSeparator = File.pathSeparatorChar;

    44 

    45     /**

    46      * The original class path string

    47      */

    48     private String pathstr;

    49 

    50     /**

    51      * List of source path entries. Each entry is a directory.

    52      */

    53     private File[] sourcePath;

    54 

    55 

    56     /**

    57      * Build a source path from the specified path string on the command line.

    58      */

    59     public SourcePath(String pathstr) {

    60         init(pathstr);

    61     }

    62 

    63     /**

    64      * Build a default source path from the path strings specified by

    65      * the properties env.class.path.

    66      */

    67     public SourcePath() {

    68         init(System.getProperty("env.class.path"));

    69     }

    70 

    71     /**

    72      * Initialize the SourcePath File array, which will contain only the

    73      * directory names from the given path string.

    74      *

    75      * @param pathstr Path String.

    76      */

    77     private void init(String pathstr) {

    78         if (pathstr == null ||  pathstr.length() == 0) {

    79             pathstr = ".";

    80         }

    81 

    82         int noOfFileSep = 0;

    83         int index = 0;

    84         this.pathstr = pathstr; // Save original class path string

    85 

    86         // Count the number of path separators

    87         while ((index = pathstr.indexOf(dirSeparator, index)) != -1) {

    88             noOfFileSep++;

    89             index++;

    90         }

    91         // Build the source path

    92         File[] tempPath = new File[noOfFileSep + 1];

    93         int tempPathIndex = 0;

    94         int len = pathstr.length();

    95         int sepPos = 0;

    96         for (index = 0; index < len; index = sepPos + 1) {

    97             sepPos = pathstr.indexOf(dirSeparator, index);

    98             if (sepPos < 0) {

    99                 sepPos = len;

   100             }

   101             File file = new File(pathstr.substring(index, sepPos));

   102             if (file.isDirectory()) {

   103                 tempPath[tempPathIndex++] = file;

   104             } // if it is really a file, ignore it.

   105         }

   106         sourcePath = new File[tempPathIndex];

   107         System.arraycopy((Object)tempPath, 0, (Object)sourcePath,

   108                          0, tempPathIndex);

   109     }

   110 

   111     /**

   112      * Find the specified directory in the source path.

   113      *

   114      * @param name Name of the directory to be searched for in the source path.

   115      * @return File Return the directory if found else return null.

   116      */

   117     public File getDirectory(String name) {

   118         for (int i = 0; i < sourcePath.length; i++) {

   119             File directoryNeeded = new File(sourcePath[i], name);

   120             if (directoryNeeded.isDirectory()) {

   121                 return directoryNeeded;

   122             }

   123         }

   124         return null;

   125     }

   126 

   127     /**

   128      * Return original source path string.

   129      */

   130     public String toString() {

   131         return pathstr;

   132     }

   133 }