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Make regex static to determine subtitleText of room

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Non trivial time is spend on making sure the regex are valid otherwise

Signed-off-by: Carl Schwan <carl@carlschwan.eu>
This commit is contained in:
Carl Schwan
2022-11-08 23:34:39 +01:00
parent df951d354d
commit ded5c5d363
1 changed files with 20 additions and 10 deletions
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30
src/neochatroom.cpp
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@@ -304,28 +304,38 @@ QDateTime NeoChatRoom::lastActiveTime()
QString NeoChatRoom::subtitleText()
{
QString subtitle = this->lastEventToString().size() == 0 ? this->topic() : this->lastEventToString();
static QRegularExpression blockquote("(\r\n\t|\n|\r\t|)> ");
static QRegularExpression heading("(\r\n\t|\n|\r\t|)\\#{1,6} ");
static QRegularExpression newlines("(\r\n\t|\n|\r\t)");
static QRegularExpression bold1("(\\*\\*|__)(?=\\S)([^\\r]*\\S)\\1");
static QRegularExpression bold2("(\\*|_)(?=\\S)([^\\r]*\\S)\\1");
static QRegularExpression strike1("~~(.*)~~");
static QRegularExpression strike2("~(.*)~");
static QRegularExpression del("<del>(.*)</del>");
static QRegularExpression multileLineCode("```([^```]+)```");
static QRegularExpression singleLinecode("`([^`]+)`");
subtitle
// replace blockquote, i.e. '> text'
.replace(QRegularExpression("(\r\n\t|\n|\r\t|)> "), " ")
.replace(blockquote, " ")
// replace headings, i.e. "# text"
.replace(QRegularExpression("(\r\n\t|\n|\r\t|)\\#{1,6} "), " ")
.replace(heading, " ")
// replace newlines
.replace(QRegularExpression("(\r\n\t|\n|\r\t)"), " ")
.replace(newlines, " ")
// replace '**text**' and '__text__'
.replace(QRegularExpression("(\\*\\*|__)(?=\\S)([^\\r]*\\S)\\1"), "\\2")
.replace(bold1, "\\2")
// replace '*text*' and '_text_'
.replace(QRegularExpression("(\\*|_)(?=\\S)([^\\r]*\\S)\\1"), "\\2")
.replace(bold2, "\\2")
// replace '~~text~~'
.replace(QRegularExpression("~~(.*)~~"), "\\1")
.replace(strike1, "\\1")
// replace '~text~'
.replace(QRegularExpression("~(.*)~"), "\\1")
.replace(strike2, "\\1")
// replace '<del>text</del>'
.replace(QRegularExpression("<del>(.*)</del>"), "\\1")
.replace(del, "\\1")
// replace '```code```'
.replace(QRegularExpression("```([^```]+)```"), "\\1")
.replace(multileLineCode, "\\1")
// replace '`code`'
.replace(QRegularExpression("`([^`]+)`"), "\\1");
.replace(singleLinecode, "\\1");
return subtitle.size() > 0 ? subtitle : QStringLiteral(" ");
}