How can i convert entity character(Escape character) to HTML in QT?

Question

I want to convert entity character(Escape character) to HTML in QT, please help me....

i.e: I want to replace " with ", > with >

=====This is my code that not worked====

 QString MyApp::ReplaceString(const QString Data, const QString &Before, const QString &After) { QString Result = Data; Result.replace(Before, After, Qt::CaseInsensitive); return Result; }

========

QTextCodec *codec = QTextCodec::codecForName("UTF-8"); QByteArray data=pReply->readAll(); QString str = codec->toUnicode((const char *)data); str = Qt::escape(str); str = ReplaceString(str, "&quot;", "\""); str = ReplaceString(str,"&gt;", ">");

Your question is not clear at all. Please add some examples of what you want converted to what. — Mat
– Mat, Commented Oct 8, 2011 at 10:30
Those replacements work. Are you sure you should be escapeing your input? — Mat
– Mat, Commented Oct 8, 2011 at 10:52
Use an XML parser! Those results contain both escaped and unescaped symbols. — Mat
– Mat, Commented Oct 8, 2011 at 11:06

Luca Carlon · Accepted Answer · 2011-10-08 12:57:45Z

18

I'm not sure I understand what you want, just guessing. You can use QTextDocument. Try something like this:

QTextDocument text; text.setHtml("&lt;&gt;&quot;"); QString plain = text.toPlainText(); qDebug("%s.", qPrintable(plain));

Remember that QTextDocument needs the gui module.

answered Oct 8, 2011 at 12:57

Luca Carlon

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3 Comments

Ivo Over a year ago

The reverse also works for creating HTML-encoded versions of plaintext strings. Nice!

rightaway717 Over a year ago

I think it's worth mentioning that it introduces QtGui dependency, so not useful if you have a console app.

Zhang Over a year ago

How about this kind of characters "\xE6\x97\xA0\xE8\xAE\xBF\xE9\x97\xAE\xE6\x9D\x83\xE9\x99\x90\". I know QUrl.decode can decode them, but when they are not in a URL but in html, this way seems not graceful. Edit: I just find a way -- QString::fromUtf8(data).

Taryn · Accepted Answer · 2013-03-05 10:42:21Z

2

I think this will solve your problem.

QString escaped= QString(myhtml).replace("&","&amp;").replace(">","&gt;").replace("<","&lt;");

edited Mar 5, 2013 at 10:42

Taryn

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answered May 7, 2012 at 11:15

Sharjeel Alam

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1 Comment

rightaway717 Over a year ago

The OP asked for reverse convertion

Taryn · Accepted Answer · 2013-03-05 10:42:32Z

Test escape() function:

 QString plain = "#include <QtCore>" QString html = Qt::escape(plain); // html == "#include &lt;QtCore&gt;"

and convertFromPlainText() function:

QString Qt::convertFromPlainText ( const QString & plain, WhiteSpaceMode mode = WhiteSpacePre )

ImmortalPC · Accepted Answer · 2013-08-01 16:43:09Z

Hello to convert non ASCII character to &#XXX; (where XXX is a number):

/***************************************************************************//*! * @brief Encode all non ASCII characters into &#...; * @param[in] src Text to analyze * @param[in,opt] force Force the characters "list" to be converted. * @return ASCII text compatible. * * @note Original code: http://www.qtforum.org/article/3891/text-encoding.html * * @warning Do not forget to use QString::fromUtf8() */ QString encodeEntities( const QString& src, const QString& force=QString() ) { QString tmp(src); uint len = tmp.length(); uint i = 0; while( i<len ) { if( tmp[i].unicode() > 128 || force.contains(tmp[i]) ){ QString rp = "&#"+QString::number(tmp[i].unicode())+";"; tmp.replace(i,1,rp); len += rp.length()-1; i += rp.length(); }else{ ++i; } } return tmp; } /***************************************************************************//*! * @brief Allows decode &#...; into UNICODE (utf8) character. * @param[in] src Text to analyze * @return UNICODE (utf8) text. * * @note Do not forget to include QRegExp */ QString decodeEntities( const QString& src ) { QString ret(src); QRegExp re("&#([0-9]+);"); re.setMinimal(true); int pos = 0; while( (pos = re.indexIn(src, pos)) != -1 ) { ret = ret.replace(re.cap(0), QChar(re.cap(1).toInt(0,10))); pos += re.matchedLength(); } return ret; }

Basic usage:

qDebug() << encodeEntities(QString::fromUtf8("éà@<>hello the world €"),QString("<>")); // Will print: &#233;&#224;@&#60;&#62;hello the world &#8364; qDebug() << decodeEntities("a&#223;&#233;plop&#233;&#224;&#231;&#234;&#8364;"); // Will print: hello world

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