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// SPDX-FileCopyrightText: 2023 kumquat-ir 66188216+kumquat-ir@users.noreply.github.com
//
// SPDX-License-Identifier: LGPL-3.0-only
#include "qdcss.h"
#include <QRegularExpression>
#include <QRegularExpressionMatch>
#include <QRegularExpressionMatchIterator>
QRegularExpression ruleset_re = QRegularExpression(R"([#.]?(@?\w+?)\s*\{(.*?)\})", QRegularExpression::DotMatchesEverythingOption);
QRegularExpression rule_re = QRegularExpression(R"((\S+?)\s*:\s*(?:\"(.*?)(?<!\\)\"|'(.*?)(?<!\\)'|(\S+?))\s*(?:;|$))");
QDCSS::QDCSS(QString s)
{
// not much error handling over here...
// the original java code used indeces returned by the matcher for them, but QRE does not expose those
QRegularExpressionMatchIterator ruleset_i = ruleset_re.globalMatch(s);
while (ruleset_i.hasNext()) {
QRegularExpressionMatch ruleset = ruleset_i.next();
QString selector = ruleset.captured(1);
QString rules = ruleset.captured(2);
QRegularExpressionMatchIterator rule_i = rule_re.globalMatch(rules);
while (rule_i.hasNext()) {
QRegularExpressionMatch rule = rule_i.next();
QString property = rule.captured(1);
QString value;
if (!rule.captured(2).isNull()) {
value = rule.captured(2);
} else if (!rule.captured(3).isNull()) {
value = rule.captured(3);
} else {
value = rule.captured(4);
}
QString key = selector + "." + property;
if (!m_data.contains(key)) {
m_data.insert(key, QStringList());
}
m_data.find(key)->append(value);
}
}
}
std::optional<QString>* QDCSS::get(QString key)
{
auto found = m_data.find(key);
if (found == m_data.end() || found->empty()) {
return new std::optional<QString>;
}
return new std::optional<QString>(found->back());
}
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