de.ifgi.mosia.wpswfs.Util.java Source code

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Here is the source code for de.ifgi.mosia.wpswfs.Util.java

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/**
 * Copyright (C) 2014
 * by Institute for Geoinformatics, University of Muenster
 *
 * Contact: http://www.ifgi.de
 *
 * 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 de.ifgi.mosia.wpswfs;

import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

import javax.servlet.http.HttpServletRequest;

import org.apache.commons.codec.CharEncoding;
import org.apache.http.Header;
import org.apache.http.HttpResponse;

public class Util {

    public static Set<String> readConfigFilePerLine(String resourcePath) throws IOException {
        URL resURL = Util.class.getResource(resourcePath);
        URLConnection resConn = resURL.openConnection();
        resConn.setUseCaches(false);
        InputStream contents = resConn.getInputStream();

        Scanner sc = new Scanner(contents);
        Set<String> result = new HashSet<String>();
        String line;
        while (sc.hasNext()) {
            line = sc.nextLine();
            if (line != null && !line.isEmpty() && !line.startsWith("#")) {
                result.add(line.trim());
            }
        }
        sc.close();

        return result;
    }

    public static String readContent(HttpServletRequest req) throws IOException {
        String enc = req.getCharacterEncoding();
        return readContent(req.getInputStream(), enc);
    }

    public static String readContent(InputStream is, String enc) {
        if (is == null) {
            return null;
        }

        Scanner sc = new Scanner(is, enc == null ? CharEncoding.ISO_8859_1 : enc);
        StringBuilder sb = new StringBuilder();

        String sep = System.getProperty("line.separator");
        while (sc.hasNext()) {
            sb.append(sc.nextLine());
            sb.append(sep);
        }

        sc.close();
        return sb.toString();
    }

    public static String readContent(InputStream is) {
        return readContent(is, null);
    }

    public static String readContent(HttpResponse response) throws IOException {
        Header encHeader = response.getEntity().getContentEncoding();
        String enc;
        if (encHeader != null) {
            enc = encHeader.getValue();
        } else {
            enc = CharEncoding.ISO_8859_1;
        }
        return readContent(response.getEntity().getContent(), enc);
    }

}