io.personium.core.utils.UriUtils.java Source code

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Here is the source code for io.personium.core.utils.UriUtils.java

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/**
 * personium.io
 * Copyright 2014 FUJITSU LIMITED
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.personium.core.utils;

import java.util.ArrayList;
import java.util.List;

import org.apache.commons.lang.StringUtils;

/**
 * Scheme Utilities.
 * @author fjqs
 *
 */
public class UriUtils {
    /** PRTCOL HTTP. */
    public static final String SCHEME_HTTP = "http";
    /** PRTCOL HTTPS. */
    public static final String SCHEME_HTTPS = "https";
    /** SCHEME URN. */
    public static final String SCHEME_URN = "urn";
    /** LOCAL_UNIT. */
    public static final String SCHEME_LOCALUNIT = "personium-localunit";
    /** LOCAL_CELL. */
    public static final String SCHEME_LOCALCELL = "personium-localcell";
    /** LOCAL_BOX. */
    public static final String SCHEME_LOCALBOX = "personium-localbox";

    /** LOCAL_UNIT ADDITION. */
    public static final String SCHEME_UNIT_URI = "personium-localunit:/";

    /** SLASH. */
    public static final String STRING_SLASH = "/";

    /**
     * constructor.
     */
    private UriUtils() {
    }

    /**
     * Get Url Variations.
     * @param unitUrl String
     * @param url String
     * @return ArrayList<String>
     */
    public static List<String> getUrlVariations(String unitUrl, String url) {
        List<String> variations = new ArrayList<String>();
        variations.add(url);
        if (url != null && unitUrl != null) {
            String substitute = getUrlSubstitute(unitUrl, url);
            if (!url.equals(substitute)) {
                variations.add(substitute);
            }
        }
        return variations;
    }

    /**
     * getUrlSubstitute.
     * @param unitUrl String
     * @param url String
     * @return utl String
     */
    public static String getUrlSubstitute(String unitUrl, String url) {
        if (url != null && unitUrl != null) {
            if (url.startsWith(unitUrl)) {
                // FullHttpUrlOnThisUnit(personium-localunit:/)
                url = url.replace(unitUrl, SCHEME_UNIT_URI);
            } else {
                url = convertSchemeFromLocalUnitToHttp(unitUrl, url);
            }
        }
        return url;
    }

    /**
     * convert Scheme from LocalUnit to http.
     * @param unitUrl String
     * @param localUnitSchemeUrl String
     * @return Url with http scheme
     */
    public static String convertSchemeFromLocalUnitToHttp(String unitUrl, String localUnitSchemeUrl) {
        if (localUnitSchemeUrl != null && localUnitSchemeUrl.startsWith(SCHEME_LOCALUNIT)) {
            // SchemeLocalUnit(http://host/localunit/)
            return localUnitSchemeUrl.replace(SCHEME_UNIT_URI, unitUrl);
        }
        return localUnitSchemeUrl;
    }

    /**
     * getUnitUrl.
     * @param cellUrl String
     * @return url String
     */
    public static String getUnitUrl(String cellUrl) {
        return getUnitUrl(cellUrl, 1);
    }

    /**
     * getUnitUrl.
     * @param cellUrl String
     * @param index int from last
     * @return url String
     */
    public static String getUnitUrl(String cellUrl, int index) {
        String[] list = cellUrl.split(STRING_SLASH);
        // ????????
        return StringUtils.substringBeforeLast(cellUrl, list[list.length - index]);
    }
}