| /* |
| * Copyright (c) 2012, 2016, 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.comp; |
| |
| import java.io.*; |
| import java.net.URI; |
| import java.nio.file.NoSuchFileException; |
| |
| import javax.lang.model.element.Modifier; |
| import javax.lang.model.element.NestingKind; |
| import javax.tools.JavaFileObject; |
| |
| import com.sun.tools.javac.util.DefinedBy; |
| import com.sun.tools.javac.util.DefinedBy.Api; |
| |
| /** |
| * The SmartFileObject will return an outputstream that cache the written data |
| * and compare the new content with the old content on disk. Only if they differ, |
| * will the file be updated. |
| * |
| * <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> |
| */ |
| public class SmartFileObject implements JavaFileObject { |
| |
| JavaFileObject file; |
| |
| public SmartFileObject(JavaFileObject r) { |
| file = r; |
| } |
| |
| @Override |
| public boolean equals(Object other) { |
| return file.equals(other); |
| } |
| |
| @Override |
| public int hashCode() { |
| return file.hashCode(); |
| } |
| |
| @DefinedBy(Api.COMPILER) |
| public Kind getKind() { |
| return file.getKind(); |
| } |
| |
| @DefinedBy(Api.COMPILER) |
| public boolean isNameCompatible(String simpleName, Kind kind) { |
| return file.isNameCompatible(simpleName, kind); |
| } |
| |
| @DefinedBy(Api.COMPILER) |
| public URI toUri() { |
| return file.toUri(); |
| } |
| |
| @DefinedBy(Api.COMPILER) |
| public String getName() { |
| return file.getName(); |
| } |
| |
| @DefinedBy(Api.COMPILER) |
| public InputStream openInputStream() throws IOException { |
| return file.openInputStream(); |
| } |
| |
| @DefinedBy(Api.COMPILER) |
| public OutputStream openOutputStream() throws IOException { |
| return file.openOutputStream(); |
| } |
| |
| @DefinedBy(Api.COMPILER) |
| public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException { |
| return file.getCharContent(ignoreEncodingErrors); |
| } |
| |
| static String lineseparator = System.getProperty("line.separator"); |
| |
| @DefinedBy(Api.COMPILER) |
| public Writer openWriter() throws IOException { |
| StringBuilder s = new StringBuilder(); |
| try (BufferedReader r = new BufferedReader(file.openReader(true))) { |
| while (r.ready()) { |
| s.append(r.readLine()+lineseparator); |
| } |
| } catch (FileNotFoundException | NoSuchFileException e) { |
| // Perfectly ok. |
| } |
| return new SmartWriter(file, s.toString(), file.getName()); |
| } |
| |
| @DefinedBy(Api.COMPILER) |
| public long getLastModified() { |
| return file.getLastModified(); |
| } |
| |
| @DefinedBy(Api.COMPILER) |
| public boolean delete() { |
| return file.delete(); |
| } |
| |
| @DefinedBy(Api.COMPILER) |
| public Modifier getAccessLevel() { |
| return file.getAccessLevel(); |
| } |
| |
| @DefinedBy(Api.COMPILER) |
| public NestingKind getNestingKind() { |
| return file.getNestingKind(); |
| } |
| |
| @DefinedBy(Api.COMPILER) |
| public Reader openReader(boolean ignoreEncodingErrors) throws IOException { |
| return file.openReader(ignoreEncodingErrors); |
| } |
| |
| } |