120 lines
2.8 KiB
C++
120 lines
2.8 KiB
C++
/*
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* Olive Community Edition - Non-Linear Video Editor
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* Copyright (C) 2025 Olive CE Team
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef COMMANDLINEPARSER_H
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#define COMMANDLINEPARSER_H
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#include <QStringList>
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#include <QVector>
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#include "common/define.h"
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/**
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* @brief Command-line argument parser
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*
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* You may be wondering why we don't use QCommandLineParser instead of a custom implementation like
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* this. The reason why is because QCommandLineParser requires a QApplication object of some kind
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* to already have been created before it can parse anything, but we need to be able to control
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* whether a QApplication (GUI-mode) or a QCoreApplication (CLI-mode) is created which is set by
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* the user as a command line argument. Therefore we needed a custom implementation that could
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* parse arguments without the need for a Q(Core)Application to be present already.
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*/
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class CommandLineParser {
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public:
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~CommandLineParser();
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DISABLE_COPY_MOVE(CommandLineParser)
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class PositionalArgument {
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public:
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PositionalArgument() = default;
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const QString &GetSetting() const
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{
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return setting_;
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}
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void SetSetting(const QString &s)
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{
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setting_ = s;
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}
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private:
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QString setting_;
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};
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class Option : public PositionalArgument {
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public:
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Option()
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{
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is_set_ = false;
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}
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bool IsSet() const
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{
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return is_set_;
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}
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void Set()
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{
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is_set_ = true;
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}
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private:
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bool is_set_;
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};
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CommandLineParser() = default;
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const Option *AddOption(const QStringList &strings,
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const QString &description, bool takes_arg = false,
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const QString &arg_placeholder = QString(),
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bool hidden = false);
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const PositionalArgument *AddPositionalArgument(const QString &name,
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const QString &description,
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bool required = false);
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void Process(const QVector<QString> &argv);
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void PrintHelp(const char *filename);
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private:
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struct KnownOption {
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QStringList args;
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QString description;
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Option *option;
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bool takes_arg;
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QString arg_placeholder;
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bool hidden;
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};
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struct KnownPositionalArgument {
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QString name;
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QString description;
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PositionalArgument *option;
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bool required;
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};
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QVector<KnownOption> options_;
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QVector<KnownPositionalArgument> positional_args_;
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};
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#endif // COMMANDLINEPARSER_H
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