169 lines
4.2 KiB
C++
169 lines
4.2 KiB
C++
/*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Copyright 2013 Danny Robson <danny@nerdcruft.net>
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*/
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#ifndef __UTIL_CMDLINE_HPP
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#define __UTIL_CMDLINE_HPP
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#include <memory>
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#include <tuple>
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#include <vector>
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#include <stdexcept>
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#include <string>
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namespace util { namespace cmdopt {
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namespace option {
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class base {
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protected:
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base (std::string name, std::string description);
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public:
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virtual ~base ();
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virtual void execute (void);
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virtual void execute (const char *restrict);
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virtual void start (void);
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virtual void finish (void);
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const std::string& name (void) const;
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const std::string& description (void) const;
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bool required (void) const;
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bool required (bool);
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bool seen (void) const;
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bool seen (bool);
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private:
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bool m_required;
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bool m_seen;
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std::string m_name;
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std::string m_description;
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};
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class null : public base {
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public:
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explicit null (std::string name, std::string description);
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virtual void execute (void) override;
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virtual void execute (const char *restrict) override;
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};
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class present : public base {
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public:
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present (std::string name, std::string description, bool&);
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using base::execute;
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virtual void execute (void) override;
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virtual void finish (void) override;
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private:
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bool &m_data;
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};
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template <typename T>
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class value : public base {
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public:
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value (std::string name, std::string description, T&);
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using base::execute;
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void execute (const char *restrict) override;
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T data (void) const;
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T& data (void);
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T& data (T);
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private:
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T& m_data;
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};
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template <typename T = unsigned>
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class count : public value<T> {
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public:
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count (std::string name, std::string description, T&);
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using value<T>::execute;
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void execute (void) override;
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};
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class bytes : public value<size_t> {
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public:
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using value<size_t>::value;
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using value<size_t>::execute;
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void execute (const char *restrict) override;
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};
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}
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class error : public std::runtime_error
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{ using runtime_error::runtime_error; };
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class invalid_key : public error
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{ using error::error; };
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class invalid_value : public error
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{ using error::error; };
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class invalid_null : public error
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{ using error::error; };
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class invalid_required : public error
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{ using error::error; };
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class parser {
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public:
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template <typename T, typename ...Args>
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T& add (char shortname,
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std::string longname,
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std::string description,
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Args&&...);
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int scan (int argc, const char *const *argv);
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private:
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int parse_long (int pos, int argc, const char *const *argv);
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int parse_short (int pos, int argc, const char *const *argv);
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void print_help [[noreturn]] (int argc, const char *const *argv) const;
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using short_t = std::tuple<char,option::base&>;
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using long_t = std::tuple<std::string,option::base&>;
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std::vector<short_t> m_short;
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std::vector<long_t> m_long;
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std::vector<
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std::tuple<
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char,
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std::string,
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std::unique_ptr<option::base>>
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> m_options;
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};
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} }
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#include "cmdopt.ipp"
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#endif
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