127 lines
3.8 KiB
Java
127 lines
3.8 KiB
Java
/*
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* Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package com.sun.tools.sjavac.comp;
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import java.io.*;
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import java.net.URI;
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import javax.lang.model.element.Modifier;
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import javax.lang.model.element.NestingKind;
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import javax.tools.JavaFileObject;
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/**
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* The SmartFileObject will return an outputstream that cache the written data
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* and compare the new content with the old content on disk. Only if they differ,
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* will the file be updated.
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*
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* <p><b>This is NOT part of any supported API.
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* If you write code that depends on this, you do so at your own
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* risk. This code and its internal interfaces are subject to change
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* or deletion without notice.</b></p>
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*/
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public class SmartFileObject implements JavaFileObject {
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JavaFileObject file;
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PrintWriter stdout;
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public SmartFileObject(JavaFileObject r, PrintWriter pw) {
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file = r;
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stdout = pw;
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}
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@Override
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public boolean equals(Object other) {
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return file.equals(other);
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}
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@Override
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public int hashCode() {
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return file.hashCode();
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}
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public Kind getKind() {
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return file.getKind();
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}
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public boolean isNameCompatible(String simpleName, Kind kind) {
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return file.isNameCompatible(simpleName, kind);
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}
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public URI toUri() {
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return file.toUri();
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}
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public String getName() {
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return file.getName();
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}
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public InputStream openInputStream() throws IOException {
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return file.openInputStream();
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}
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public OutputStream openOutputStream() throws IOException {
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return file.openOutputStream();
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}
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public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException {
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return file.getCharContent(ignoreEncodingErrors);
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}
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static String lineseparator = System.getProperty("line.separator");
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public Writer openWriter() throws IOException {
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StringBuilder s = new StringBuilder();
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try (BufferedReader r = new BufferedReader(file.openReader(true))) {
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while (r.ready()) {
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s.append(r.readLine()+lineseparator);
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}
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} catch (FileNotFoundException e) {
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// Perfectly ok.
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}
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return new SmartWriter(file, s.toString(), file.getName(), stdout);
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}
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public long getLastModified() {
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return file.getLastModified();
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}
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public boolean delete() {
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return file.delete();
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}
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public Modifier getAccessLevel() {
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return file.getAccessLevel();
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}
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public NestingKind getNestingKind() {
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return file.getNestingKind();
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}
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public Reader openReader(boolean ignoreEncodingErrors) throws IOException {
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return file.openReader(ignoreEncodingErrors);
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}
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}
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