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refact: introduce hasNonAsciiAndControlCharacters

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Make regex thread_local.
This commit is contained in:
black-desk 2023-08-25 12:05:10 +08:00 committed by Comix
parent 17536bca3b
commit a16754647a
1 changed files with 35 additions and 13 deletions
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48
src/desktopentry.cpp
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@ -15,6 +15,29 @@
#include <chrono>
#include <cstdio>
namespace {
bool hasNonAsciiAndControlCharacters(const QString &str) noexcept
{
static const QRegularExpression _matchControlChars = []() {
QRegularExpression tmp{R"(\p{Cc})"};
tmp.optimize();
return tmp;
}();
thread_local const auto matchControlChars = _matchControlChars;
static const QRegularExpression _matchNonAsciiChars = []() {
QRegularExpression tmp{R"([^\x00-\x7f])"};
tmp.optimize();
return tmp;
}();
thread_local const auto matchNonAsciiChars = _matchNonAsciiChars;
if (str.contains(matchControlChars) and str.contains(matchNonAsciiChars)) {
return true;
}
return false;
}
} // namespace
auto DesktopEntry::parseGroupHeader(const QString &str) noexcept
{
// https://specifications.freedesktop.org/desktop-entry-spec/desktop-entry-spec-latest.html#group-header
@ -22,14 +45,7 @@ auto DesktopEntry::parseGroupHeader(const QString &str) noexcept
auto groupHeader = str.sliced(1, str.size() - 2).trimmed();
decltype(m_entryMap)::iterator it{m_entryMap.end()};
// NOTE:
// This regex match '[', ']', control characters
// and all non-ascii characters.
// They are invalid in group header.
// https://regex101.com/r/bZhHZo/1
QRegularExpression re{R"([^\x20-\x5a\x5e-\x7e\x5c])"};
auto matcher = re.match(groupHeader);
if (matcher.hasMatch()) {
if (groupHeader.contains('[') || groupHeader.contains(']') || hasNonAsciiAndControlCharacters(groupHeader)) {
qWarning() << "group header invalid:" << str;
return it;
}
@ -61,11 +77,12 @@ bool DesktopEntry::isInvalidLocaleString(const QString &str) noexcept
constexpr auto Modifier = R"((?:@[a-z=;]+))"; // modifier of locale postfix. eg.(euro;collation=traditional)
const static auto validKey = QString(R"(^%1%2?%3?%4?$)").arg(Language, Country, Encoding, Modifier);
// example: https://regex101.com/r/hylOay/2
static QRegularExpression re = []() -> QRegularExpression {
static const QRegularExpression _re = []() -> QRegularExpression {
QRegularExpression tmp{validKey};
tmp.optimize();
return tmp;
}();
thread_local const auto re = _re;
return re.match(str).hasMatch();
}
@ -104,7 +121,13 @@ std::optional<QPair<QString, QString>> DesktopEntry::processEntryKey(const QStri
key = keyStr;
}
QRegularExpression re{"R([^A-Za-z0-9-])"};
static const QRegularExpression _re = []() {
QRegularExpression tmp{"R([^A-Za-z0-9-])"};
tmp.optimize();
return tmp;
}();
// NOTE: https://stackoverflow.com/a/25583104
thread_local const QRegularExpression re = _re;
if (re.match(key).hasMatch()) {
qWarning() << "keyName's format is invalid.";
return std::nullopt;
@ -477,10 +500,9 @@ QString DesktopEntry::Value::toString(bool &ok) const noexcept
if (str == this->end()) {
return {};
}
auto unescapedStr = unescape(*str);
constexpr auto controlChars = "\\p{Cc}";
constexpr auto asciiChars = "[^\x00-\x7f]";
if (unescapedStr.contains(QRegularExpression{controlChars}) and unescapedStr.contains(QRegularExpression{asciiChars})) {
if (hasNonAsciiAndControlCharacters(unescapedStr)) {
return {};
}