1 /*

     2  * Copyright 2005-2008 Sun Microsystems, Inc.  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.  Sun designates this

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

     9  * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    22  * CA 95054 USA or visit www.sun.com if you need additional information or

    23  * have any questions.

    24  */

    25 

    26 package com.sun.tools.javac.file;

    27 

    28 import java.io.File;

    29 import java.io.FileInputStream;

    30 import java.io.FileOutputStream;

    31 import java.io.IOException;

    32 import java.io.InputStream;

    33 import java.io.OutputStream;

    34 import java.io.OutputStreamWriter;

    35 import java.io.Writer;

    36 import java.net.URI;

    37 import java.net.URISyntaxException;

    38 import java.nio.ByteBuffer;

    39 import java.nio.CharBuffer;

    40 import java.nio.charset.CharsetDecoder;

    41 import javax.tools.JavaFileObject;

    42 

    43 /**

    44  * A subclass of JavaFileObject representing regular files.

    45  */

    46 class RegularFileObject extends BaseFileObject {

    47 

    48     /** Have the parent directories been created?

    49      */

    50     private boolean hasParents = false;

    51     private String name;

    52     final File f;

    53 

    54     public RegularFileObject(JavacFileManager fileManager, File f) {

    55         this(fileManager, f.getName(), f);

    56     }

    57 

    58     public RegularFileObject(JavacFileManager fileManager, String name, File f) {

    59         super(fileManager);

    60         if (f.isDirectory()) {

    61             throw new IllegalArgumentException("directories not supported");

    62         }

    63         this.name = name;

    64         this.f = f;

    65     }

    66 

    67     public InputStream openInputStream() throws IOException {

    68         return new FileInputStream(f);

    69     }

    70 

    71     protected CharsetDecoder getDecoder(boolean ignoreEncodingErrors) {

    72         return fileManager.getDecoder(fileManager.getEncodingName(), ignoreEncodingErrors);

    73     }

    74 

    75     public OutputStream openOutputStream() throws IOException {

    76         ensureParentDirectoriesExist();

    77         return new FileOutputStream(f);

    78     }

    79 

    80     public Writer openWriter() throws IOException {

    81         ensureParentDirectoriesExist();

    82         return new OutputStreamWriter(new FileOutputStream(f), fileManager.getEncodingName());

    83     }

    84 

    85     @Override

    86     protected String inferBinaryName(Iterable<? extends File> path) {

    87         String fPath = f.getPath();

    88         //System.err.println("RegularFileObject " + file + " " +r.getPath());

    89         for (File dir: path) {

    90             //System.err.println("dir: " + dir);

    91             String dPath = dir.getPath();

    92             if (!dPath.endsWith(File.separator))

    93                 dPath += File.separator;

    94             if (fPath.regionMatches(true, 0, dPath, 0, dPath.length())

    95                 && new File(fPath.substring(0, dPath.length())).equals(new File(dPath))) {

    96                 String relativeName = fPath.substring(dPath.length());

    97                 return removeExtension(relativeName).replace(File.separatorChar, '.');

    98             }

    99         }

   100         return null;

   101     }

   102 

   103     private void ensureParentDirectoriesExist() throws IOException {

   104         if (!hasParents) {

   105             File parent = f.getParentFile();

   106             if (parent != null && !parent.exists()) {

   107                 if (!parent.mkdirs()) {

   108                     if (!parent.exists() || !parent.isDirectory()) {

   109                         throw new IOException("could not create parent directories");

   110                     }

   111                 }

   112             }

   113             hasParents = true;

   114         }

   115     }

   116 

   117     @Deprecated

   118     public String getName() {

   119         return name;

   120     }

   121 

   122     public boolean isNameCompatible(String cn, JavaFileObject.Kind kind) {

   123         cn.getClass();

   124         // null check

   125         if (kind == Kind.OTHER && getKind() != kind) {

   126             return false;

   127         }

   128         String n = cn + kind.extension;

   129         if (name.equals(n)) {

   130             return true;

   131         }

   132         if (name.equalsIgnoreCase(n)) {

   133             try {

   134                 // allow for Windows

   135                 return f.getCanonicalFile().getName().equals(n);

   136             } catch (IOException e) {

   137             }

   138         }

   139         return false;

   140     }

   141 

   142     @Deprecated

   143     public String getPath() {

   144         return f.getPath();

   145     }

   146 

   147     public long getLastModified() {

   148         return f.lastModified();

   149     }

   150 

   151     public boolean delete() {

   152         return f.delete();

   153     }

   154 

   155     public CharBuffer getCharContent(boolean ignoreEncodingErrors) throws IOException {

   156         CharBuffer cb = fileManager.getCachedContent(this);

   157         if (cb == null) {

   158             InputStream in = new FileInputStream(f);

   159             try {

   160                 ByteBuffer bb = fileManager.makeByteBuffer(in);

   161                 JavaFileObject prev = fileManager.log.useSource(this);

   162                 try {

   163                     cb = fileManager.decode(bb, ignoreEncodingErrors);

   164                 } finally {

   165                     fileManager.log.useSource(prev);

   166                 }

   167                 fileManager.recycleByteBuffer(bb);

   168                 if (!ignoreEncodingErrors) {

   169                     fileManager.cache(this, cb);

   170                 }

   171             } finally {

   172                 in.close();

   173             }

   174         }

   175         return cb;

   176     }

   177 

   178     @Override

   179     public boolean equals(Object other) {

   180         if (!(other instanceof RegularFileObject)) {

   181             return false;

   182         }

   183         RegularFileObject o = (RegularFileObject) other;

   184         try {

   185             return f.equals(o.f) || f.getCanonicalFile().equals(o.f.getCanonicalFile());

   186         } catch (IOException e) {

   187             return false;

   188         }

   189     }

   190 

   191     @Override

   192     public int hashCode() {

   193         return f.hashCode();

   194     }

   195 

   196     public URI toUri() {

   197         try {

   198             String path = f.getAbsolutePath().replace(File.separatorChar, '/');

   199             return new URI("file://" + path).normalize();

   200         } catch (URISyntaxException ex) {

   201             return f.toURI();

   202         }

   203     }

   204 }