dev.meng.wikipedia.profiler.util.StringUtils.java Source code

Introduction

Here is the source code for dev.meng.wikipedia.profiler.util.StringUtils.java

Source

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package dev.meng.wikipedia.profiler.util;

import dev.meng.wikipedia.profiler.log.LogHandler;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.net.URLEncoder;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Collection;
import java.util.GregorianCalendar;
import java.util.Iterator;
import java.util.Map;
import org.apache.commons.io.IOUtils;

/**
 *
 * @author xumeng
 */
public class StringUtils {

    public static String collectionToString(Collection collection, String delimeter) {
        String result = "";
        if (!collection.isEmpty()) {
            Iterator iterator = collection.iterator();
            result = result + iterator.next();
            while (iterator.hasNext()) {
                result = result + delimeter + iterator.next();
            }
        }
        return result;
    }

    public static String arrayToString(Object[] collection, String delimeter) {
        String result = "";
        if (collection.length != 0) {
            result = result + collection[0];
            for (int i = 1; i < collection.length; i++) {
                result = result + delimeter + collection[i];
            }
        }
        return result;
    }

    public static String repetition(String base, String delimeter, int times) {
        String result = "";
        if (times > 0) {
            result = result + base;
            for (int i = 1; i < times; i++) {
                result = result + delimeter + base;
            }
        }
        return result;
    }

    public static String formatTimestamp(GregorianCalendar date, String format) {
        SimpleDateFormat formatter = new SimpleDateFormat(format);
        return formatter.format(date.getTime());
    }

    public static GregorianCalendar parseTimestamp(String string, String format) throws ParseException {
        GregorianCalendar result = null;

        SimpleDateFormat formatter = new SimpleDateFormat(format);
        result = (GregorianCalendar) GregorianCalendar.getInstance();
        result.setTime(formatter.parse(string));

        return result;
    }

    public static String replace(String string, Object... values) {
        String result = string;
        for (Object value : values) {
            if (string.contains("?")) {
                result = result.replaceFirst("\\?", value.toString());
            }
        }
        return result;
    }

    public static String mapToURLParameters(Map<String, Object> params) {
        String result = "";
        Iterator it = params.entrySet().iterator();
        while (it.hasNext()) {
            try {
                Map.Entry<String, Object> pair = (Map.Entry) it.next();
                result += URLEncoder.encode(pair.getKey(), "utf-8") + "="
                        + URLEncoder.encode(pair.getValue().toString(), "utf-8");
                if (it.hasNext()) {
                    result += "&";
                }
            } catch (UnsupportedEncodingException ex) {
                LogHandler.console(StringUtils.class, ex);
            }
        }
        return result;
    }

    public static String inputStreamToString(InputStream input) throws IOException {
        return IOUtils.toString(input, "utf-8");
    }

    public static String URLEncode(String string) {
        try {
            return URLEncoder.encode(string, "utf-8");
        } catch (UnsupportedEncodingException ex) {
            LogHandler.console(StringUtils.class, ex);
            return string;
        }
    }

    public static String URLDecode(String string) {
        try {
            return URLDecoder.decode(string, "utf-8");
        } catch (UnsupportedEncodingException ex) {
            LogHandler.console(StringUtils.class, ex);
            return string;
        }
    }
}