/***************************************************************************
* Copyright (C) 2003-2008 eXo Platform SAS.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see<http://www.gnu.org/licenses/>.
***************************************************************************/
package org.exoplatform.forum;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.apache.commons.lang.StringUtils;
/**
* Created by The eXo Platform SAS
* Author : Vu Duy Tu
* tu.duy@exoplatform.com
* May 22, 2008 - 2:58:53 AM
*/
public class ForumTransformHTML {
public static String cleanHtmlCode(String sms, List<String> bbcs) {
if (sms == null || sms.trim().length() <= 0)
return ForumUtils.EMPTY_STR;
sms = StringUtils.replace(sms, "\n", " ");
// clean bbcode
List<String> bbcList = new ArrayList<String>();
bbcList.addAll(bbcs);
for (String bbc : bbcs) {
bbcList.add(bbc.toLowerCase());
}
int lastIndex = 0;
int tagIndex = 0;
String start, end;
for (String bbc : bbcList) {
start = "[" + bbc;
end = "[/" + bbc + "]";
lastIndex = 0;
tagIndex = 0;
while ((tagIndex = sms.indexOf(start, lastIndex)) != -1) {
lastIndex = tagIndex + 1;
try {
int clsIndex = sms.indexOf(end, tagIndex);
String content = sms.substring(tagIndex, clsIndex);
String content_ = content.substring(content.indexOf("]") + 1);
sms = StringUtils.replace(sms, content + end, content_);
} catch (Exception e) {
continue;
}
}
}
sms = StringUtils.replace(sms, "[U]", ForumUtils.EMPTY_STR);
sms = StringUtils.replace(sms, "[/U]", ForumUtils.EMPTY_STR);
sms = StringUtils.replace(sms, "[u]", ForumUtils.EMPTY_STR);
sms = StringUtils.replace(sms, "[/u]", ForumUtils.EMPTY_STR);
// Clean html code
String scriptregex = "<(script|style)[^>]*>[^<]*</(script|style)>";
Pattern p1 = Pattern.compile(scriptregex, Pattern.CASE_INSENSITIVE);
Matcher m1 = p1.matcher(sms);
sms = m1.replaceAll(ForumUtils.EMPTY_STR);
String tagregex = "<[^>]*>";
Pattern p2 = Pattern.compile(tagregex);
Matcher m2 = p2.matcher(sms);
sms = m2.replaceAll(ForumUtils.EMPTY_STR);
String multiplenewlines = "(\\n{1,2})(\\s*\\n)+";
sms = sms.replaceAll(multiplenewlines, "$1");
return sms;
}
public static String getTitleInHTMLCode(String s, List<String> bbcs) {
if (s == null || s.trim().length() == 0)
return ForumUtils.EMPTY_STR;
if (s.length() > 500)
s = s.substring(0, 500);
s = s.replaceAll(" ", " ").replaceAll(" ", " ").replaceAll(" ", " ").replaceAll("<br/>", " ");
s = StringUtils.replace(s, " ", " ");
s = cleanHtmlCode(s, bbcs);
s = removeCharterStrange(s);
return s;
}
public static String removeCharterStrange(String s) {
if (s == null || s.length() <= 0)
return ForumUtils.EMPTY_STR;
int i = 0;
StringBuilder builder = new StringBuilder();
while (i < s.length()) {
if (s.codePointAt(i) > 31) {
builder.append(s.charAt(i));
}
++i;
}
return builder.toString();
}
public static String enCodeHTMLTitle(String s) {
StringBuffer buffer = new StringBuffer();
if (s != null) {
s = s.replaceAll("(<p>((\\ )*)(\\s*)?</p>)|(<p>((\\ )*)?(\\s*)</p>)", "<br/>").trim();
s = s.replaceFirst("(<br/>)*", ForumUtils.EMPTY_STR);
s = s.replaceAll("(\\w|\\$)(>?,?\\.?\\*?\\!?\\&?\\%?\\]?\\)?\\}?)(<br/><br/>)*", "$1$2");
for (int j = 0; j < s.trim().length(); j++) {
char c = s.charAt(j);
if ((int) c == 60) {
buffer.append("<");
} else if ((int) c == 62) {
buffer.append(">");
} else if (c == '\'') {
buffer.append("'");
} else {
buffer.append(c);
}
}
}
return buffer.toString().replaceFirst("(<br/>)*", ForumUtils.EMPTY_STR);
}
public static String enCodeHTMLContent(String message) {
StringBuffer buffer = new StringBuffer();
for (int j = 0; j < message.length(); j++) {
char c = message.charAt(j);
if ((int) c == 9) {
buffer.append(" ");
} else if ((int) c == 10) {
buffer.append("<br/>");
} else if ((int) c == 60) {
buffer.append("<");
} else if ((int) c == 62) {
buffer.append(">");
} else if (c == '\'') {
buffer.append("'");
} else if (c == '&') {
buffer.append("&");
} else {
buffer.append(c);
}
}
return buffer.toString();
}
public static String enCodeViewSignature(String s) {
if (s != null && s.trim().length() > 0) {
// replace enter key to <br/> tag html
StringBuffer buffer = new StringBuffer();
for (int j = 0; j < s.trim().length(); j++) {
if (s.codePointAt(j) == 10) {
buffer.append("<br/>");
} else {
buffer.append(s.charAt(j));
}
}
s = buffer.toString();
} else
s = ForumUtils.EMPTY_STR;
return s;
}
public static String fixAddBBcodeAction(String b) {
int tagIndex = 0;
int lastIndex = 0;
String start;
String end;
String text_ = ForumUtils.EMPTY_STR;
StringBuilder builder;
String[] tagBBcode = new String[] { "quote", "code", "QUOTE", "CODE" };
for (int i = 0; i < tagBBcode.length; i++) {
start = "[" + tagBBcode[i];
end = "[/" + tagBBcode[i] + "]";
while ((tagIndex = b.indexOf(start, lastIndex)) != -1) {
lastIndex = tagIndex + 1;
builder = new StringBuilder();
try {
int clsIndex = b.indexOf(end, tagIndex);
String text = b.substring(tagIndex, clsIndex);
if (text == null || text.trim().length() == 0)
continue;
text_ = text;
if (text.indexOf('<' + "p") > text.indexOf('<' + "/p")) {
text = StringUtils.replaceOnce(text, "</p>", ForumUtils.EMPTY_STR);
int t = text.lastIndexOf('<' + "p>");
builder.append(text.substring(0, t));
if (text.length() > (t + 3)) {
builder.append(text.substring(t + 3));
}
}
text = builder.toString();
if (text != null && text.length() > 0) {
b = StringUtils.replace(b, text_, text);
text_ = text;
} else
text = text_;
builder = new StringBuilder();
if (text.indexOf('<' + "span") > text.indexOf('<' + "/span")) {
text = StringUtils.replaceOnce(text, "</span>", ForumUtils.EMPTY_STR);
int t = text.lastIndexOf('<' + "span");
builder.append(text.substring(0, t));
if (text.length() > (t + 6)) {
builder.append(text.substring((t + 6)));
}
}
text = builder.toString();
if (text != null && text.length() > 0) {
b = StringUtils.replace(b, text_, text);
}
} catch (Exception e) {
continue;
}
}
}
return b;
}
}