129 lines
4.7 KiB
Java
129 lines
4.7 KiB
Java
/*
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* Copyright (c) 2005, 2009, 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.javac.file;
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import java.io.File;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.io.Reader;
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import java.net.URI;
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import java.net.URISyntaxException;
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import java.nio.charset.CharsetDecoder;
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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.FileObject;
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import javax.tools.JavaFileObject;
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import static javax.tools.JavaFileObject.Kind.*;
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import com.sun.tools.javac.util.BaseFileManager;
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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 risk.
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* This code and its internal interfaces are subject to change or
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* deletion without notice.</b>
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*/
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public abstract class BaseFileObject implements JavaFileObject {
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protected BaseFileObject(JavacFileManager fileManager) {
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this.fileManager = fileManager;
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}
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/** Return a short name for the object, such as for use in raw diagnostics
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*/
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public abstract String getShortName();
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@Override
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public String toString() {
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return getClass().getSimpleName() + "[" + getName() + "]";
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}
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public NestingKind getNestingKind() { return null; }
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public Modifier getAccessLevel() { return null; }
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public Reader openReader(boolean ignoreEncodingErrors) throws IOException {
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return new InputStreamReader(openInputStream(), getDecoder(ignoreEncodingErrors));
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}
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protected CharsetDecoder getDecoder(boolean ignoreEncodingErrors) {
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throw new UnsupportedOperationException();
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}
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protected abstract String inferBinaryName(Iterable<? extends File> path);
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protected static JavaFileObject.Kind getKind(String filename) {
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return BaseFileManager.getKind(filename);
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}
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protected static String removeExtension(String fileName) {
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int lastDot = fileName.lastIndexOf(".");
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return (lastDot == -1 ? fileName : fileName.substring(0, lastDot));
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}
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protected static URI createJarUri(File jarFile, String entryName) {
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URI jarURI = jarFile.toURI().normalize();
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String separator = entryName.startsWith("/") ? "!" : "!/";
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try {
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// The jar URI convention appears to be not to re-encode the jarURI
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return new URI("jar:" + jarURI + separator + entryName);
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} catch (URISyntaxException e) {
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throw new CannotCreateUriError(jarURI + separator + entryName, e);
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}
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}
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/** Used when URLSyntaxException is thrown unexpectedly during
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* implementations of (Base)FileObject.toURI(). */
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protected static class CannotCreateUriError extends Error {
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private static final long serialVersionUID = 9101708840997613546L;
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public CannotCreateUriError(String value, Throwable cause) {
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super(value, cause);
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}
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}
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/** Return the last component of a presumed hierarchical URI.
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* From the scheme specific part of the URI, it returns the substring
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* after the last "/" if any, or everything if no "/" is found.
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*/
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public static String getSimpleName(FileObject fo) {
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URI uri = fo.toUri();
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String s = uri.getSchemeSpecificPart();
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return s.substring(s.lastIndexOf("/") + 1); // safe when / not found
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}
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// force subtypes to define equals
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@Override
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public abstract boolean equals(Object other);
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// force subtypes to define hashCode
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@Override
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public abstract int hashCode();
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/** The file manager that created this JavaFileObject. */
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protected final JavacFileManager fileManager;
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}
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