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// Copyright (C) 2023 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include "optionsparser.h"
#include "messages.h"
#include "exception.h"
#include <QtCore/QDir>
#include <QtCore/QTextStream>
using namespace Qt::StringLiterals;
template <class Stream> void formatBoolOption(Stream &s, const BoolOption &bo)
{
switch (bo.source) {
case OptionSource::CommandLine:
s << "--";
break;
case OptionSource::CommandLineSingleDash:
s << '-';
break;
default:
break;
}
s << bo.option;
if (bo.source == OptionSource::ProjectFile)
s << " (project)";
}
template <class Stream> void formatOptionValue(Stream &s, const OptionValue &ov)
{
switch (ov.source) {
case OptionSource::CommandLine:
s << "--";
break;
case OptionSource::CommandLineSingleDash:
s << '-';
break;
default:
break;
}
s << ov.option << '=' << ov.value;
if (ov.source == OptionSource::ProjectFile)
s << " (project)";
}
QTextStream &operator<<(QTextStream &s, const BoolOption &bo)
{
formatBoolOption(s, bo);
return s;
}
QTextStream &operator<<(QTextStream &s, const OptionValue &ov)
{
formatOptionValue(s, ov);
return s;
}
QDebug operator<<(QDebug debug, const BoolOption &bo)
{
QDebugStateSaver saver(debug);
debug.noquote();
debug.nospace();
formatBoolOption(debug, bo);
return debug;
}
QDebug operator<<(QDebug debug, const OptionValue &v)
{
QDebugStateSaver saver(debug);
debug.noquote();
debug.nospace();
formatOptionValue(debug, v);
return debug;
}
QDebug operator<<(QDebug debug, const Options &v)
{
QDebugStateSaver saver(debug);
debug.noquote();
debug.nospace();
debug << "Options(";
if (!v.boolOptions.isEmpty())
debug << "bools=" << v.boolOptions;
if (!v.valueOptions.isEmpty())
debug << ", option values=" << v.valueOptions;
if (!v.positionalArguments.isEmpty())
debug << ", pos=" << v.positionalArguments;
debug << ')';
return debug;
}
QTextStream &operator<<(QTextStream &s, const OptionDescription &od)
{
if (!od.name.startsWith(u'-'))
s << "--";
s << od.name;
if (od.description.isEmpty()) { // For formatting {{"-s", ""}, {"--short", "descr"}}
s << ", ";
} else {
s << '\n';
const auto lines = QStringView{od.description}.split(u'\n');
for (const auto &line : lines)
s << " " << line << '\n';
s << '\n';
}
return s;
}
QTextStream &operator<<(QTextStream &s, const OptionDescriptions &options)
{
s.setFieldAlignment(QTextStream::AlignLeft);
for (const auto &od : options)
s << od;
return s;
}
OptionsParser::OptionsParser() noexcept = default;
OptionsParser::~OptionsParser() = default;
const QString &OptionsParser::pathSyntax()
{
static const QString result =
u"<path>["_s + QDir::listSeparator() + u"<path>"_s
+ QDir::listSeparator() + u"...]"_s;
return result;
}
bool OptionsParser::handleBoolOption(const QString &, OptionSource)
{
return false;
}
bool OptionsParser::handleOption(const QString &, const QString &, OptionSource)
{
return false;
}
void OptionsParser::process(Options *o)
{
for (auto i = o->boolOptions.size() - 1; i >= 0; --i) {
const auto &opt = o->boolOptions.at(i);
if (handleBoolOption(opt.option, opt.source))
o->boolOptions.removeAt(i);
}
for (auto i = o->valueOptions.size() - 1; i >= 0; --i) {
const auto &opt = o->valueOptions.at(i);
if (handleOption(opt.option, opt.value, opt.source))
o->valueOptions.removeAt(i);
}
}
bool OptionsParserList::handleBoolOption(const QString &key, OptionSource source)
{
for (const auto &p : std::as_const(m_parsers)) {
if (p->handleBoolOption(key, source))
return true;
}
return false;
}
bool OptionsParserList::handleOption(const QString &key, const QString &value, OptionSource source)
{
for (const auto &p : std::as_const(m_parsers)) {
if (p->handleOption(key, value, source))
return true;
}
return false;
}
static void processOption(const QString &o, OptionSource source,
BoolOptions *bools, OptionValues *values)
{
const auto equals = o.indexOf(u'=');
if (equals == -1) {
bools->append({o.trimmed(), source});
} else {
QString key = o.left(equals).trimmed();
QString value = o.mid(equals + 1).trimmed();
if (!value.isEmpty())
values->append({key, value, source});
}
}
static void readProjectFile(const QString &name, Options *o)
{
const auto startMarker = "[generator-project]"_ba;
QFile file(name);
if (!file.open(QIODevice::ReadOnly | QIODevice::Text))
throw Exception(msgCannotOpenForReading(file));
if (file.atEnd() || file.readLine().trimmed() != startMarker)
throw Exception(msgMissingProjectFileMarker(name, startMarker));
while (!file.atEnd()) {
const QByteArray lineB = file.readLine().trimmed();
if (!lineB.isEmpty() && !lineB.startsWith('#')) {
processOption(QString::fromUtf8(lineB), OptionSource::ProjectFile,
&o->boolOptions, &o->valueOptions);
}
}
}
void Options::setOptions(const QStringList &argv)
{
const auto projectFileOption = "--project-file="_L1;
for (const auto &o : argv) {
if (o.startsWith(projectFileOption)) {
readProjectFile(o.sliced(projectFileOption.size()), this);
} else if (o.startsWith(u"--")) {
processOption(o.sliced(2), OptionSource::CommandLine,
&boolOptions, &valueOptions);
} else if (o.startsWith(u'-')) {
processOption(o.sliced(1), OptionSource::CommandLineSingleDash,
&boolOptions, &valueOptions);
} else {
positionalArguments.append(o);
}
}
}
QString Options::msgUnprocessedOptions() const
{
QString result;
QTextStream str(&result);
for (const auto &b : boolOptions)
str << b << ' ';
for (const auto &v : valueOptions)
str << v << ' ';
return result.trimmed();
}
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