org.eclipse.jdt.internal.core.NonJavaResource.java Source code

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Here is the source code for org.eclipse.jdt.internal.core.NonJavaResource.java

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/*******************************************************************************
 * Copyright (c) 2000, 2008 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.jdt.internal.core;

import java.io.InputStream;

import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;
import org.eclipse.core.runtime.PlatformObject;
import org.eclipse.jdt.core.IJarEntryResource;
import org.eclipse.jdt.core.IPackageFragment;
import org.eclipse.jdt.core.IPackageFragmentRoot;
import org.eclipse.jdt.internal.core.util.Util;

public class NonJavaResource extends PlatformObject implements IJarEntryResource {

    private static final IJarEntryResource[] NO_CHILDREN = new IJarEntryResource[0];
    protected Object parent;
    protected IResource resource;

    public NonJavaResource(Object parent, IResource resource) {
        this.parent = parent;
        this.resource = resource;
    }

    @Override
    public boolean equals(Object obj) {
        if (!(obj instanceof NonJavaResource))
            return false;
        NonJavaResource other = (NonJavaResource) obj;
        return this.parent.equals(other.parent) && this.resource.equals(other.resource);
    }

    @Override
    public IJarEntryResource[] getChildren() {
        if (this.resource instanceof IContainer) {
            IResource[] members;
            try {
                members = ((IContainer) this.resource).members();
            } catch (CoreException e) {
                Util.log(e, "Could not retrieve children of " + this.resource.getFullPath()); //$NON-NLS-1$
                return NO_CHILDREN;
            }
            int length = members.length;
            if (length == 0)
                return NO_CHILDREN;
            IJarEntryResource[] children = new IJarEntryResource[length];
            for (int i = 0; i < length; i++) {
                children[i] = new NonJavaResource(this, members[i]);
            }
            return children;
        }
        return NO_CHILDREN;
    }

    @Override
    public InputStream getContents() throws CoreException {
        if (this.resource instanceof IFile)
            return ((IFile) this.resource).getContents();
        return null;
    }

    protected String getEntryName() {
        String parentEntryName;
        if (this.parent instanceof IPackageFragment) {
            String elementName = ((IPackageFragment) this.parent).getElementName();
            parentEntryName = elementName.length() == 0 ? "" : elementName.replace('.', '/') + '/'; //$NON-NLS-1$
        } else if (this.parent instanceof IPackageFragmentRoot) {
            parentEntryName = ""; //$NON-NLS-1$
        } else {
            parentEntryName = ((NonJavaResource) this.parent).getEntryName() + '/';
        }
        return parentEntryName + getName();
    }

    @Override
    public IPath getFullPath() {
        return new Path(getEntryName()).makeAbsolute();
    }

    @Override
    public String getName() {
        return this.resource.getName();
    }

    @Override
    public IPackageFragmentRoot getPackageFragmentRoot() {
        if (this.parent instanceof IPackageFragment) {
            return (IPackageFragmentRoot) ((IPackageFragment) this.parent).getParent();
        } else if (this.parent instanceof IPackageFragmentRoot) {
            return (IPackageFragmentRoot) this.parent;
        } else {
            return ((NonJavaResource) this.parent).getPackageFragmentRoot();
        }
    }

    @Override
    public Object getParent() {
        return this.parent;
    }

    @Override
    public int hashCode() {
        return Util.combineHashCodes(this.resource.hashCode(), this.parent.hashCode());
    }

    @Override
    public boolean isFile() {
        return this.resource instanceof IFile;
    }

    @Override
    public boolean isReadOnly() {
        return true;
    }

    @Override
    public String toString() {
        return "NonJavaResource[" + getEntryName() + "]"; //$NON-NLS-1$ //$NON-NLS-2$
    }
}