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/******************************************************************************
* Copyright (C) 2018 Kitsune Ral <kitsune-ral@users.sf.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "util.h"
#include <QtCore/QRegularExpression>
static const auto RegExpOptions =
QRegularExpression::CaseInsensitiveOption
| QRegularExpression::OptimizeOnFirstUsageOption
| QRegularExpression::UseUnicodePropertiesOption;
/** Converts all that looks like a URL into HTML links */
[[gnu::const]] static void linkifyUrls(QString& htmlEscapedText)
{
// regexp is originally taken from Konsole (https://github.com/KDE/konsole)
// full url:
// protocolname:// or www. followed by anything other than whitespaces,
// <, >, ' or ", and ends before whitespaces, <, >, ', ", ], !, ), :,
// comma or dot
// Note: outer parentheses are a part of C++ raw string delimiters, not of
// the regex (see http://en.cppreference.com/w/cpp/language/string_literal).
static const QRegularExpression FullUrlRegExp(QStringLiteral(
R"(((www\.(?!\.)|[a-z][a-z0-9+.-]*://)(&(?![lg]t;)|[^&\s<>'"])+(&(?![lg]t;)|[^&!,.\s<>'"\]):])))"
), RegExpOptions);
// email address:
// [word chars, dots or dashes]@[word chars, dots or dashes].[word chars]
static const QRegularExpression EmailAddressRegExp(QStringLiteral(
R"((mailto:)?(\b(\w|\.|-)+@(\w|\.|-)+\.\w+\b))"
), RegExpOptions);
// NOTE: htmlEscapedText is already HTML-escaped! No literal <,>,&
htmlEscapedText.replace(EmailAddressRegExp,
QStringLiteral(R"(<a href="mailto:\2">\1\2</a>)"));
htmlEscapedText.replace(FullUrlRegExp,
QStringLiteral(R"(<a href="\1">\1</a>)"));
}
QString QMatrixClient::prettyPrint(const QString& plainText)
{
auto pt = QStringLiteral("<span style='white-space:pre-wrap'>") +
plainText.toHtmlEscaped() + QStringLiteral("</span>");
pt.replace('\n', "<br/>");
linkifyUrls(pt);
return pt;
}
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