org.cryptomator.frontend.webdav.servlet.DavLocatorImpl.java Source code

Introduction

Here is the source code for org.cryptomator.frontend.webdav.servlet.DavLocatorImpl.java

Source

/*******************************************************************************
 * Copyright (c) 2016 Sebastian Stenzel and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the accompanying LICENSE.txt.
 *
 * Contributors:
 *     Sebastian Stenzel - initial API and implementation
 *******************************************************************************/
package org.cryptomator.frontend.webdav.servlet;

import java.util.Objects;

import org.apache.commons.lang3.StringUtils;
import org.apache.jackrabbit.webdav.DavResourceLocator;
import org.apache.jackrabbit.webdav.util.EncodeUtil;

class DavLocatorImpl implements DavResourceLocator {

    private final DavLocatorFactoryImpl factory;
    private final String prefix;
    private final String resourcePath;

    /**
     * Behold, this is a constructor. It constructs constructions. Didn't see that coming, did you?
     * 
     * @param factory Locator factory.
     * @param prefix Must end on "/".
     * @param resourcePath Must be an relative path, i.e. must not start with "/".
     */
    public DavLocatorImpl(DavLocatorFactoryImpl factory, String prefix, String resourcePath) {
        if (!prefix.endsWith("/")) {
            throw new IllegalArgumentException("prefix must end on '/' but was: " + prefix);
        }
        if (resourcePath.startsWith("/")) {
            throw new IllegalArgumentException("resourcePath must not start with '/' but was: " + resourcePath);
        }
        this.factory = Objects.requireNonNull(factory);
        this.prefix = prefix;
        this.resourcePath = StringUtils.removeEnd(resourcePath, "/");
    }

    public DavLocatorImpl resolveChild(String childName) {
        if (isRootLocation()) {
            return factory.createResourceLocator(prefix, null, childName);
        } else {
            return factory.createResourceLocator(prefix, null, resourcePath + "/" + childName);
        }
    }

    public DavLocatorImpl resolveParent() {
        if (isRootLocation()) {
            // root does not have a parent:
            return null;
        } else if (resourcePath.contains("/")) {
            // parent is a directory:
            String parentResourcePath = StringUtils.substringBeforeLast(resourcePath, "/");
            return factory.createResourceLocator(prefix, null, parentResourcePath);
        } else {
            // parent is root:
            return factory.createResourceLocator(prefix, null, "");
        }
    }

    @Override
    public String getPrefix() {
        return prefix;
    }

    @Override
    public String getResourcePath() {
        return resourcePath;
    }

    @Override
    public String getWorkspacePath() {
        // TODO overheadhunter: what defines a workspace? same servlet?
        return null;
    }

    @Override
    public String getWorkspaceName() {
        // TODO overheadhunter: what defines a workspace? same servlet?
        return null;
    }

    @Override
    public boolean isSameWorkspace(DavResourceLocator locator) {
        // TODO overheadhunter: what defines a workspace? same servlet?
        return false;
    }

    @Override
    public boolean isSameWorkspace(String workspaceName) {
        // TODO overheadhunter: what defines a workspace? same servlet?
        return false;
    }

    @Override
    public String getHref(boolean isCollection) {
        if (isCollection) {
            return StringUtils.appendIfMissing(getHref(), "/");
        } else {
            return StringUtils.removeEnd(getHref(), "/");
        }
    }

    private String getHref() {
        return prefix + EncodeUtil.escapePath(resourcePath);
    }

    @Override
    public boolean isRootLocation() {
        return StringUtils.isEmpty(resourcePath);
    }

    @Override
    public DavLocatorFactoryImpl getFactory() {
        return factory;
    }

    @Override
    public String getRepositoryPath() {
        return getResourcePath();
    }

    @Override
    public int hashCode() {
        return Objects.hash(factory, prefix, resourcePath);
    }

    @Override
    public boolean equals(Object obj) {
        if (obj instanceof DavLocatorImpl) {
            DavLocatorImpl other = (DavLocatorImpl) obj;
            assert this.factory != null //
                    && this.prefix != null //
                    && this.resourcePath != null;
            return this.factory.equals(other.factory) //
                    && this.prefix.equals(other.prefix) //
                    && this.resourcePath.equals(other.resourcePath);
        } else {
            return false;
        }
    }

    @Override
    public String toString() {
        return this.factory + ": " + this.prefix + this.resourcePath;
    }

}