diff options
Diffstat (limited to 'src/bbcode.cpp')
| -rw-r--r-- | src/bbcode.cpp | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/src/bbcode.cpp b/src/bbcode.cpp new file mode 100644 index 00000000..5f134d78 --- /dev/null +++ b/src/bbcode.cpp @@ -0,0 +1,209 @@ +/* +Copyright (C) 2012 Sebastian Herbord. All rights reserved. + +This file is part of Mod Organizer. + +Mod Organizer is free software: you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation, either version 3 of the License, or +(at your option) any later version. + +Mod Organizer 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 Mod Organizer. If not, see <http://www.gnu.org/licenses/>. +*/ + +#include "bbcode.h"
+
+#include <QRegExp>
+#include <map>
+#include <algorithm>
+
+
+namespace BBCode {
+
+
+class BBCodeMap {
+
+ typedef std::map<QString, std::pair<QRegExp, QString> > TagMap;
+
+public:
+
+ static BBCodeMap &instance() {
+ static BBCodeMap s_Instance;
+ return s_Instance;
+ }
+
+ QString convertTag(const QString &input, int &length)
+ {
+ // extract the tag name
+ m_TagNameExp.indexIn(input, 1, QRegExp::CaretAtOffset);
+ QString tagName = m_TagNameExp.cap(0).toLower();
+ //qDebug("tag name %s", tagName.toUtf8().constData());
+ TagMap::iterator tagIter = m_TagMap.find(tagName);
+ if (tagIter != m_TagMap.end()) {
+ // recognized tag
+ if (tagName.endsWith('=')) {
+ tagName.chop(1);
+ }
+ QString closeTag = tagName == "*" ? "<br/>"
+ : QString("[/%1]").arg(tagName);
+
+ int closeTagPos = input.indexOf(closeTag, 0, Qt::CaseInsensitive);
+ //qDebug("close tag %s at %d", closeTag.toUtf8().constData(), closeTagPos);
+
+ if (closeTagPos > -1) {
+ length = closeTagPos + closeTag.length();
+ QString temp = input.mid(0, length);
+ if (tagIter->second.first.indexIn(temp) == 0) {
+ return temp.replace(tagIter->second.first, tagIter->second.second);
+ } else {
+ // expression doesn't match. either the input string is invalid
+ // or the expression is
+ qWarning("%s doesn't match the expression for %s",
+ temp.toUtf8().constData(), tagName.toUtf8().constData());
+ length = 0;
+ return QString();
+ }
+ }
+ }
+
+ // not a recognized tag or tag invalid
+ length = 0;
+ return QString();
+ }
+
+private:
+ BBCodeMap()
+ : m_TagNameExp("^[a-zA-Z*]*=?")
+ {
+ m_TagMap["b"] = std::make_pair(QRegExp("\\[b\\](.*)\\[/b\\]"),
+ "<b>\\1</b>");
+ m_TagMap["i"] = std::make_pair(QRegExp("\\[i\\](.*)\\[/i\\]"),
+ "<i>\\1</i>");
+ m_TagMap["u"] = std::make_pair(QRegExp("\\[u\\](.*)\\[/u\\]"),
+ "<u>\\1</u>");
+ m_TagMap["s"] = std::make_pair(QRegExp("\\[s\\](.*)\\[/s\\]"),
+ "<s>\\1</s>");
+ m_TagMap["sub"] = std::make_pair(QRegExp("\\[sub\\](.*)\\[/sub\\]"),
+ "<sub>\\1</sub>");
+ m_TagMap["sup"] = std::make_pair(QRegExp("\\[sup\\](.*)\\[/sup\\]"),
+ "<sup>\\1</sup>");
+ m_TagMap["size="] = std::make_pair(QRegExp("\\[size=([^\\]]*)\\](.*)\\[/size\\]"),
+ "<font size=\"\\1\">\\2</font>");
+ m_TagMap["color="] = std::make_pair(QRegExp("\\[color=([^\\]]*)\\](.*)\\[/color\\]"),
+ "<font style=\"color: #\\1;\">\\2</font>");
+ m_TagMap["font="] = std::make_pair(QRegExp("\\[font=([^\\]]*)\\](.*)\\[/font\\]"),
+ "<font face=\\1>\\2</font>");
+ m_TagMap["center"] = std::make_pair(QRegExp("\\[center\\](.*)\\[/center\\]"),
+ "<div align=\"center\">\\1</div>");
+ m_TagMap["quote"] = std::make_pair(QRegExp("\\[quote\\](.*)\\[/quote\\]"),
+ "<blockquote>\"\\1\"</blockquote>");
+ m_TagMap["quote="] = std::make_pair(QRegExp("\\[quote=([^\\]]*)\\](.*)\\[/quote\\]"),
+ "<blockquote>\"\\2\"<br/><span>--\\1</span></blockquote></p>");
+ m_TagMap["code"] = std::make_pair(QRegExp("\\[code\\](.*)\\[/code\\]"),
+ "<pre>\\1</pre>");
+ m_TagMap["heading"]= std::make_pair(QRegExp("\\[heading\\](.*)\\[/heading\\]"),
+ "<h2><strong>\\1</strong></h2>");
+
+ // lists
+ m_TagMap["list"] = std::make_pair(QRegExp("\\[list\\](.*)\\[/list\\]"),
+ "<ul>\\1</ul>");
+ m_TagMap["list="] = std::make_pair(QRegExp("\\[list.*\\](.*)\\[/list\\]"),
+ "<ol>\\1</ol>");
+ m_TagMap["ul"] = std::make_pair(QRegExp("\\[ul\\](.*)\\[/ul\\]"),
+ "<ul>\\1</ul>");
+ m_TagMap["ol"] = std::make_pair(QRegExp("\\[ol\\](.*)\\[/ol\\]"),
+ "<ol>\\1</ol>");
+ m_TagMap["li"] = std::make_pair(QRegExp("\\[li\\](.*)\\[/li\\]"),
+ "<li>\\1</li>");
+ m_TagMap["*"] = std::make_pair(QRegExp("\\[\\*\\](.*)<br/>"),
+ "<li>\\1</li>");
+
+ // tables
+ m_TagMap["table"] = std::make_pair(QRegExp("\\[table\\](.*)\\[/table\\]"),
+ "<table>\\1</table>");
+ m_TagMap["tr"] = std::make_pair(QRegExp("\\[tr\\](.*)\\[/tr\\]"),
+ "<tr>\\1</tr>");
+ m_TagMap["th"] = std::make_pair(QRegExp("\\[th\\](.*)\\[/th\\]"),
+ "<th>\\1</th>");
+ m_TagMap["td"] = std::make_pair(QRegExp("\\[td\\](.*)\\[/td\\]"),
+ "<td>\\1</td>");
+
+ // web content
+ m_TagMap["url"] = std::make_pair(QRegExp("\\[url\\](.*)\\[/url\\]"),
+ "<a href=\"\\1\">\\1</a>");
+ m_TagMap["url="] = std::make_pair(QRegExp("\\[url=([^\\]]*)\\](.*)\\[/url\\]"),
+ "<a href=\"\\1\">\\2</a>");
+ m_TagMap["img"] = std::make_pair(QRegExp("\\[img\\](.*)\\[/img\\]"),
+ "<img src=\"\\1\"/>");
+ m_TagMap["img="] = std::make_pair(QRegExp("\\[img=([^\\]]*)\\](.*)\\[/img\\]"),
+ "<img src=\"\\2\" align=\"\\1\" />");
+ m_TagMap["email="] = std::make_pair(QRegExp("\\[email=\"?([^\\]]*)\"?\\](.*)\\[/email\\]"),
+ "<a href=\"mailto:\\1\">\\2</a>");
+ m_TagMap["youtube"] = std::make_pair(QRegExp("\\[youtube\\](.*)\\[/youtube\\]"),
+ "<a href=\"http://www.youtube.com/v/\\1\">http://www.youtube.com/v/\\1</a>");
+
+ // make all patterns non-greedy and case-insensitive
+ for (TagMap::iterator iter = m_TagMap.begin(); iter != m_TagMap.end(); ++iter) {
+ iter->second.first.setCaseSensitivity(Qt::CaseInsensitive);
+ iter->second.first.setMinimal(true);
+ }
+ }
+
+
+private:
+ QRegExp m_TagNameExp;
+ TagMap m_TagMap;
+};
+
+
+QString convertToHTML(const QString &inputParam)
+{
+ // this code goes over the input string once and replaces all bbtags
+ // it encounters. This function is called recursively for every replaced
+ // string to convert nested tags.
+ //
+ // This could be implemented simpler by applying a set of regular expressions
+ // for each recognized bb-tag one after the other but that would probably be
+ // very inefficient (O(n^2)).
+
+ QString input = inputParam.mid(0).replace("\r\n", "<br/>");
+ input.replace("\\\"", "\"").replace("\\'", "'");
+
+ QString result;
+ int lastBlock = 0;
+ int pos = 0;
+
+ // iterate over the input buffer
+ while ((pos = input.indexOf('[', lastBlock)) != -1) {
+ // append everything between the previous tag-block and the current one
+ result.append(input.midRef(lastBlock, pos - lastBlock));
+
+ // convert the tag and content if necessary
+ int length = -1;
+ QString replacement = BBCodeMap::instance().convertTag(input.mid(pos), length);
+ if (length != 0) {
+ QString temp = convertToHTML(replacement);
+ result.append(temp);
+ // length contains the number of characters in the original tag
+ pos += length;
+ } else {
+ // nothing replaced
+ result.append('[');
+ ++pos;
+ }
+ lastBlock = pos;
+ }
+
+ // append the remainder (everything after the last tag)
+ result.append(input.midRef(lastBlock));
+ return result;
+}
+
+} // namespace BBCode
+
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