/*
* Copyright (c) JForum Team
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* 1) Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
* 2) Redistributions in binary form must reproduce the
* above copyright notice, this list of conditions and
* the following disclaimer in the documentation and/or
* other materials provided with the distribution.
* 3) Neither the name of "Rafael Steil" nor
* the names of its contributors may be used to endorse
* or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT
* HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
* IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
*
* This file creation date: 21/05/2004 - 15:33:36
* The JForum Project
* http://www.jforum.net
*/
package net.jforum.view.forum.common;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Date;
import java.util.Iterator;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import net.jforum.JForumExecutionContext;
import net.jforum.SessionFacade;
import net.jforum.context.RequestContext;
import net.jforum.dao.PostDAO;
import net.jforum.entities.Post;
import net.jforum.entities.Smilie;
import net.jforum.repository.BBCodeRepository;
import net.jforum.repository.PostRepository;
import net.jforum.repository.SecurityRepository;
import net.jforum.repository.SmiliesRepository;
import net.jforum.security.SecurityConstants;
import net.jforum.util.SafeHtml;
import net.jforum.util.bbcode.BBCode;
import net.jforum.util.preferences.ConfigKeys;
import net.jforum.util.preferences.SystemGlobals;
/**
* @author Rafael Steil
* @version $Id: PostCommon.java,v 1.59 2007/09/24 03:29:17 rafaelsteil Exp $
*/
public class PostCommon
{
public static Post preparePostForDisplay(Post post)
{
if (post.getText() == null) {
return post;
}
StringBuffer text = new StringBuffer(post.getText());
if (!post.isHtmlEnabled()) {
ViewCommon.replaceAll(text, "<", "<");
ViewCommon.replaceAll(text, ">", ">");
}
// Do not remove the trailing blank space, as it would
// cause some regular expressions to fail
ViewCommon.replaceAll(text, "\n", "<br /> ");
SafeHtml safeHtml = new SafeHtml();
post.setText(text.toString());
post.setText(safeHtml.makeSafe(post.getText()));
processText(post);
post.setText(safeHtml.ensureAllAttributesAreSafe(post.getText()));
//pinke parse Attachment etc.
com.trydone.forum.action.PostParser.parse(post);
return post;
}
private static void processText(Post post)
{
int codeIndex = post.getText().indexOf("[code");
int codeEndIndex = codeIndex > -1 ? post.getText().indexOf("[/code]") : -1;
boolean hasCodeBlock = false;
if (codeIndex == -1 || codeEndIndex == -1 || codeEndIndex < codeIndex) {
post.setText(prepareTextForDisplayExceptCodeTag(post.getText().toString(),
post.isBbCodeEnabled(), post.isSmiliesEnabled()));
}
else if (post.isBbCodeEnabled()) {
hasCodeBlock = true;
int nextStartPos = 0;
StringBuffer result = new StringBuffer(post.getText().length());
while (codeIndex > -1 && codeEndIndex > -1 && codeEndIndex > codeIndex) {
codeEndIndex += "[/code]".length();
String nonCodeResult = prepareTextForDisplayExceptCodeTag(post.getText().substring(nextStartPos, codeIndex),
post.isBbCodeEnabled(), post.isSmiliesEnabled());
String codeResult = parseCode(post.getText().substring(codeIndex, codeEndIndex));
result.append(nonCodeResult).append(codeResult);
nextStartPos = codeEndIndex;
codeIndex = post.getText().indexOf("[code", codeEndIndex);
codeEndIndex = codeIndex > -1 ? post.getText().indexOf("[/code]", codeIndex) : -1;
}
if (nextStartPos > -1) {
String nonCodeResult = prepareTextForDisplayExceptCodeTag(post.getText().substring(nextStartPos),
post.isBbCodeEnabled(), post.isSmiliesEnabled());
result.append(nonCodeResult);
}
post.setText(result.toString());
}
if (hasCodeBlock) {
JForumExecutionContext.getTemplateContext().put("hasCodeBlock", hasCodeBlock);
}
}
private static String parseCode(String text)
{
for (Iterator iter = BBCodeRepository.getBBCollection().getBbList().iterator(); iter.hasNext();) {
BBCode bb = (BBCode)iter.next();
if (bb.getTagName().startsWith("code")) {
Matcher matcher = Pattern.compile(bb.getRegex()).matcher(text);
StringBuffer sb = new StringBuffer(text);
while (matcher.find()) {
StringBuffer lang = null;
StringBuffer contents = null;
if ("code".equals(bb.getTagName())) {
contents = new StringBuffer(matcher.group(1));
}
else {
lang = new StringBuffer(matcher.group(1));
contents = new StringBuffer(matcher.group(2));
}
ViewCommon.replaceAll(contents, "<br /> ", "\n");
// XML-like tags
ViewCommon.replaceAll(contents, "<", "<");
ViewCommon.replaceAll(contents, ">", ">");
// Note: there is no replacing for spaces and tabs as
// we are relying on the Javascript SyntaxHighlighter library
// to do it for us
StringBuffer replace = new StringBuffer(bb.getReplace());
int index = replace.indexOf("$1");
if ("code".equals(bb.getTagName())) {
if (index > -1) {
replace.replace(index, index + 2, contents.toString());
}
index = sb.indexOf("[code]");
}
else {
if (index > -1) {
replace.replace(index, index + 2, lang.toString());
}
index = replace.indexOf("$2");
if (index > -1) {
replace.replace(index, index + 2, contents.toString());
}
index = sb.indexOf("[code=");
}
int lastIndex = sb.indexOf("[/code]", index) + "[/code]".length();
if (lastIndex > index) {
sb.replace(index, lastIndex, replace.toString());
}
}
text = sb.toString();
}
}
return text;
}
public static String prepareTextForDisplayExceptCodeTag(String text, boolean isBBCodeEnabled, boolean isSmilesEnabled)
{
if (text == null) {
return text;
}
if (isSmilesEnabled) {
text = processSmilies(new StringBuffer(text));
}
if (isBBCodeEnabled && text.indexOf('[') > -1 && text.indexOf(']') > -1) {
for (Iterator iter = BBCodeRepository.getBBCollection().getBbList().iterator(); iter.hasNext();) {
BBCode bb = (BBCode)iter.next();
if (!bb.getTagName().startsWith("code")) {
text = text.replaceAll(bb.getRegex(), bb.getReplace());
}
}
}
text = parseDefaultRequiredBBCode(text);
return text;
}
public static String parseDefaultRequiredBBCode(String text)
{
Collection list = BBCodeRepository.getBBCollection().getAlwaysProcessList();
for (Iterator iter = list.iterator(); iter.hasNext(); ) {
BBCode bb = (BBCode)iter.next();
text = text.replaceAll(bb.getRegex(), bb.getReplace());
}
return text;
}
/**
* Replace the smlies code by the respective URL.
* @param text The text to process
* @return the parsed text. Note that the StringBuffer you pass as parameter
* will already have the right contents, as the replaces are done on the instance
*/
public static String processSmilies(StringBuffer text)
{
List smilies = SmiliesRepository.getSmilies();
for (Iterator iter = smilies.iterator(); iter.hasNext(); ) {
Smilie s = (Smilie) iter.next();
int pos = text.indexOf(s.getCode());
// The counter is used as prevention, in case
// the while loop turns into an always true
// expression, for any reason
int counter = 0;
while (pos > -1 && counter++ < 300) {
text.replace(pos, pos + s.getCode().length(), s.getUrl());
pos = text.indexOf(s.getCode());
}
}
return text.toString();
}
public static Post fillPostFromRequest()
{
Post p = new Post();
p.setTime(new Date());
return fillPostFromRequest(p, false);
}
public static Post fillPostFromRequest(Post p, boolean isEdit)
{
RequestContext request = JForumExecutionContext.getRequest();
p.setSubject(request.getParameter("subject"));
p.setBbCodeEnabled(request.getParameter("disable_bbcode") == null);
p.setSmiliesEnabled(request.getParameter("disable_smilies") == null);
p.setSignatureEnabled(request.getParameter("attach_sig") != null);
if (!isEdit) {
p.setUserIp(request.getRemoteAddr());
p.setUserId(SessionFacade.getUserSession().getUserId());
}
boolean htmlEnabled = SecurityRepository.canAccess(SecurityConstants.PERM_HTML_DISABLED,
request.getParameter("forum_id"));
p.setHtmlEnabled(htmlEnabled && request.getParameter("disable_html") == null);
if (p.isHtmlEnabled()) {
p.setText(new SafeHtml().makeSafe(request.getParameter("message")));
}
else {
p.setText(request.getParameter("message"));
}
return p;
}
public static boolean canEditPost(Post post)
{
return SessionFacade.isLogged()
&& (post.getUserId() == SessionFacade.getUserSession().getUserId()
|| SecurityRepository.canAccess(SecurityConstants.PERM_MODERATION_POST_EDIT));
}
public static List topicPosts(PostDAO dao, boolean canEdit, int userId, int topicId, int start, int count)
{
boolean needPrepare = true;
List posts;
if (SystemGlobals.getBoolValue(ConfigKeys.POSTS_CACHE_ENABLED)) {
posts = PostRepository.selectAllByTopicByLimit(topicId, start, count);
needPrepare = false;
}
else {
posts = dao.selectAllByTopicByLimit(topicId, start, count);
}
List helperList = new ArrayList();
int anonymousUser = SystemGlobals.getIntValue(ConfigKeys.ANONYMOUS_USER_ID);
for (Iterator iter = posts.iterator(); iter.hasNext(); ) {
Post p;
if (needPrepare) {
p = (Post)iter.next();
}
else {
p = new Post((Post)iter.next());
}
if (canEdit || (p.getUserId() != anonymousUser && p.getUserId() == userId)) {
p.setCanEdit(true);
}
helperList.add(needPrepare ? PostCommon.preparePostForDisplay(p) : p);
}
return helperList;
}
}