org.apache.airavata.gfac.bes.utils.URIUtils.java Source code

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Here is the source code for org.apache.airavata.gfac.bes.utils.URIUtils.java

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/*
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.airavata.gfac.bes.utils;

import org.apache.commons.httpclient.URI;
import org.apache.commons.httpclient.URIException;
import org.apache.commons.httpclient.util.URIUtil;

import java.net.URISyntaxException;

public class URIUtils {

    public static String encodeAll(String uri) throws URIException {
        String result = encodeAuthority(uri);
        result = encodePath(uri);
        result = encodeQuery(result);
        result = encodeFragment(result);
        return result;
    }

    public static String encodeAuthority(String uri) throws URIException {
        int start = uri.indexOf("//");
        if (start == -1)
            return uri;
        start++;
        int end = uri.indexOf("/", start + 1);
        if (end == -1)
            end = uri.indexOf("?", start + 1);
        if (end == -1)
            end = uri.indexOf("#", start + 1);
        if (end == -1)
            end = uri.length();
        String before = uri.substring(0, start + 1);
        String authority = uri.substring(start + 1, end);
        String after = uri.substring(end);
        authority = URIUtil.encode(authority, URI.allowed_authority);

        return before + authority + after;
    }

    public static String encodePath(String uri) throws URIException {
        int doubleSlashIndex = uri.indexOf("//");
        boolean hasAuthority = doubleSlashIndex >= 0;
        int start = -1;
        if (hasAuthority) {
            start = uri.indexOf("/", doubleSlashIndex + 2);
        } else {
            start = uri.indexOf(":");
        }
        if (start == -1)
            return uri;

        int end = uri.indexOf("?", start + 1);
        if (end == -1)
            end = uri.indexOf("#", start + 1);
        if (end == -1)
            end = uri.length();
        String before = uri.substring(0, start + 1);
        String path = uri.substring(start + 1, end);
        String after = uri.substring(end);
        path = URIUtil.encode(path, URI.allowed_abs_path);
        return before + path + after;
    }

    public static String encodeQuery(String uri) throws URIException {
        int queryStart = uri.indexOf("?");
        if (queryStart == -1)
            return uri;
        int queryEnd = uri.indexOf("#");
        if (queryEnd == -1)
            queryEnd = uri.length();

        String beforeQuery = uri.substring(0, queryStart + 1);
        String query = uri.substring(queryStart + 1, queryEnd);
        String afterQuery = uri.substring(queryEnd);
        query = URIUtil.encode(query, URI.allowed_query);
        return beforeQuery + query + afterQuery;
    }

    public static String encodeFragment(String uri) throws URIException {
        int fragmentStart = uri.indexOf("#");
        if (fragmentStart == -1)
            return uri;

        String beforeFragment = uri.substring(0, fragmentStart + 1);
        String fragment = uri.substring(fragmentStart + 1);
        fragment = URIUtil.encode(fragment, URI.allowed_fragment);
        return beforeFragment + fragment;
    }

    public static java.net.URI createGsiftpURI(String host, String localPath) throws URISyntaxException {
        StringBuffer buf = new StringBuffer();
        if (!host.startsWith("gsiftp://"))
            buf.append("gsiftp://");
        buf.append(host);
        if (!host.endsWith("/"))
            buf.append("/");
        buf.append(localPath);
        return new java.net.URI(buf.toString());
    }
}