org.opoo.press.util.LinkUtils.java Source code

Introduction

Here is the source code for org.opoo.press.util.LinkUtils.java

Source

/*
 * Copyright 2013 Alex Lin.
 *
 * 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 org.opoo.press.util;

import freemarker.template.Configuration;
import freemarker.template.Template;
import org.apache.commons.lang.StringUtils;
import org.opoo.press.Excerptable;

import java.io.StringReader;
import java.io.StringWriter;
import java.util.Calendar;
import java.util.Date;
import java.util.Map;

/**
 * @author Alex Lin
 *
 */
public abstract class LinkUtils {

    public static void addDateParams(Map<String, Object> params, Date date) {
        if (date == null) {
            date = new Date();
        }
        if (params == null) {
            return;
        }
        Calendar c = Calendar.getInstance();
        c.setTime(date);
        int year = c.get(Calendar.YEAR);
        int monthnum = c.get(Calendar.MONTH) + 1;
        int day = c.get(Calendar.DAY_OF_MONTH);
        int hour = c.get(Calendar.HOUR_OF_DAY);
        int minute = c.get(Calendar.MINUTE);
        int second = c.get(Calendar.SECOND);

        params.put("year", year + "");
        params.put("month", StringUtils.leftPad(monthnum + "", 2, '0'));
        params.put("day", StringUtils.leftPad(day + "", 2, '0'));
        params.put("hour", StringUtils.leftPad(hour + "", 2, '0'));
        params.put("minute", StringUtils.leftPad(minute + "", 2, '0'));
        params.put("second", StringUtils.leftPad(second + "", 2, '0'));
    }

    public static String renderUrl(String pattern, Map<String, Object> params) {
        try {
            Configuration configuration = new Configuration();
            Template template = new Template("filename", new StringReader(pattern), configuration, "UTF-8");
            StringWriter writer = new StringWriter();
            template.process(params, writer);
            writer.flush();
            return writer.toString();
        } catch (Exception e) {
            throw new RuntimeException("Render url failed: " + e.getMessage(), e);
        }
    }
}