/*
 * Symphony - A modern community (forum/BBS/SNS/blog) platform written in Java.
 * Copyright (C) 2012-2018, b3log.org & hacpai.com
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
package org.b3log.symphony.util;

import org.apache.commons.lang.StringUtils;
import org.b3log.latke.util.MD5;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * MP3 player utilities.
 *
 * @author <a href="http://88250.b3log.org">Liang Ding</a>
 * @author <a href="http://vanessa.b3log.org">Liyuan Li</a>
 * @version 1.0.1.1, Mar 31, 2017
 * @since 2.1.0
 */
public final class MP3Players {

    /**
     * MP3 URL regex.
     */
    private static final String MP3_URL_REGEX = "<p>( )*<a href.*\\.mp3.*</a>( )*</p>";

    /**
     * MP3 URL regex pattern.
     */
    private static final Pattern PATTERN = Pattern.compile(MP3_URL_REGEX, Pattern.CASE_INSENSITIVE);

    /**
     * Renders the specified content with MP3 player if need.
     *
     * @param content the specified content
     * @return rendered content
     */
    public static final String render(final String content) {
        final StringBuffer contentBuilder = new StringBuffer();

        final Matcher m = PATTERN.matcher(content);
        while (m.find()) {
            String mp3URL = m.group();
            String mp3Name = StringUtils.substringBetween(mp3URL, "\">", ".mp3</a>");
            mp3URL = StringUtils.substringBetween(mp3URL, "href=\"", "\" rel=");

            m.appendReplacement(contentBuilder, "<div class=\"aplayer content-audio\" data-title=\""
                    + mp3Name + "\" data-url=\"" + mp3URL + "\" ></div>\n");
        }
        m.appendTail(contentBuilder);

        return contentBuilder.toString();
    }

    private MP3Players() {}
}

@@ -883,41 +883,8 @@
 ils;
-%0Aimport org.b3log.latke.util.MD5;
 %0A%0Aim
@@ -1117,25 +1117,25 @@
 1.0.
-1.1, Mar 31
+2.0, Jul 15
 , 201
-7
+8
 %0A * 
@@ -1842,21 +1842,22 @@
     
+final 
 String 
-mp3URL
+g
  = m
@@ -1924,22 +1924,17 @@
 Between(
-mp3URL
+g
 , %22%5C%22%3E%22,
@@ -1959,16 +1959,23 @@
         
+String 
 mp3URL =
@@ -2008,38 +2008,169 @@
 een(
-mp3URL, %22href=%5C%22%22, %22%5C%22 rel=%22);
+g, %22href=%5C%22%22, %22%5C%22 rel=%22);%0A            if (StringUtils.isBlank(mp3URL)) %7B%0A                mp3URL = StringUtils.substringBetween(g, %22href=%5C%22%22, %22%5C%22%22);%0A            %7D
 %0A%0A  
@@ -2439,24 +2439,24 @@
 g();%0A    %7D%0A%0A
-
     private 
@@ -2469,12 +2469,17 @@
 yers() %7B
+%0A    
 %7D%0A%7D%0A

修复 MP3 播放器渲染