2293 lines
47 KiB
C++
2293 lines
47 KiB
C++
/*
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Copyright (c) 2014, 2015, 2016, 2017 Jarryd Beck
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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#ifndef CXXOPTS_HPP_INCLUDED
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#define CXXOPTS_HPP_INCLUDED
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#include <cctype>
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#include <cstring>
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#include <exception>
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#include <iostream>
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#include <limits>
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#include <list>
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#include <map>
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#include <memory>
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#include <regex>
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#include <sstream>
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#include <string>
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#include <unordered_map>
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#include <unordered_set>
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#include <utility>
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#include <vector>
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#ifdef __cpp_lib_optional
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#include <optional>
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#define CXXOPTS_HAS_OPTIONAL
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#endif
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#if __cplusplus >= 201603L
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#define CXXOPTS_NODISCARD [[nodiscard]]
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#else
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#define CXXOPTS_NODISCARD
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#endif
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#ifndef CXXOPTS_VECTOR_DELIMITER
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#define CXXOPTS_VECTOR_DELIMITER ','
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#endif
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#define CXXOPTS__VERSION_MAJOR 3
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#define CXXOPTS__VERSION_MINOR 0
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#define CXXOPTS__VERSION_PATCH 0
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namespace cxxopts
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{
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static constexpr struct {
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uint8_t major, minor, patch;
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} version = {
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CXXOPTS__VERSION_MAJOR,
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CXXOPTS__VERSION_MINOR,
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CXXOPTS__VERSION_PATCH
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};
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} // namespace cxxopts
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//when we ask cxxopts to use Unicode, help strings are processed using ICU,
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//which results in the correct lengths being computed for strings when they
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//are formatted for the help output
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//it is necessary to make sure that <unicode/unistr.h> can be found by the
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//compiler, and that icu-uc is linked in to the binary.
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#ifdef CXXOPTS_USE_UNICODE
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#include <unicode/unistr.h>
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namespace cxxopts
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{
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typedef icu::UnicodeString String;
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inline
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String
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toLocalString(std::string s)
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{
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return icu::UnicodeString::fromUTF8(std::move(s));
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}
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class UnicodeStringIterator : public
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std::iterator<std::forward_iterator_tag, int32_t>
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{
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public:
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UnicodeStringIterator(const icu::UnicodeString* string, int32_t pos)
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: s(string)
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, i(pos)
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{
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}
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value_type
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operator*() const
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{
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return s->char32At(i);
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}
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bool
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operator==(const UnicodeStringIterator& rhs) const
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{
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return s == rhs.s && i == rhs.i;
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}
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bool
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operator!=(const UnicodeStringIterator& rhs) const
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{
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return !(*this == rhs);
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}
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UnicodeStringIterator&
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operator++()
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{
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++i;
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return *this;
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}
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UnicodeStringIterator
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operator+(int32_t v)
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{
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return UnicodeStringIterator(s, i + v);
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}
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private:
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const icu::UnicodeString* s;
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int32_t i;
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};
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inline
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String&
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stringAppend(String&s, String a)
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{
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return s.append(std::move(a));
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}
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inline
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String&
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stringAppend(String& s, size_t n, UChar32 c)
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{
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for (size_t i = 0; i != n; ++i)
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{
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s.append(c);
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}
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return s;
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}
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template <typename Iterator>
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String&
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stringAppend(String& s, Iterator begin, Iterator end)
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{
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while (begin != end)
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{
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s.append(*begin);
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++begin;
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}
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return s;
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}
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inline
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size_t
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stringLength(const String& s)
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{
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return s.length();
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}
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inline
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std::string
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toUTF8String(const String& s)
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{
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std::string result;
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s.toUTF8String(result);
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return result;
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}
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inline
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bool
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empty(const String& s)
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{
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return s.isEmpty();
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}
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}
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namespace std
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{
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inline
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cxxopts::UnicodeStringIterator
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begin(const icu::UnicodeString& s)
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{
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return cxxopts::UnicodeStringIterator(&s, 0);
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}
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inline
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cxxopts::UnicodeStringIterator
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end(const icu::UnicodeString& s)
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{
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return cxxopts::UnicodeStringIterator(&s, s.length());
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}
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}
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//ifdef CXXOPTS_USE_UNICODE
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#else
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namespace cxxopts
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{
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typedef std::string String;
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template <typename T>
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T
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toLocalString(T&& t)
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{
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return std::forward<T>(t);
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}
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inline
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size_t
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stringLength(const String& s)
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{
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return s.length();
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}
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inline
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String&
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stringAppend(String&s, const String& a)
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{
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return s.append(a);
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}
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inline
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String&
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stringAppend(String& s, size_t n, char c)
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{
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return s.append(n, c);
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}
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template <typename Iterator>
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String&
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stringAppend(String& s, Iterator begin, Iterator end)
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{
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return s.append(begin, end);
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}
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template <typename T>
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std::string
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toUTF8String(T&& t)
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{
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return std::forward<T>(t);
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}
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||
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inline
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bool
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empty(const std::string& s)
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{
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return s.empty();
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}
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} // namespace cxxopts
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//ifdef CXXOPTS_USE_UNICODE
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#endif
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namespace cxxopts
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{
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namespace
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||
{
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#ifdef _WIN32
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const std::string LQUOTE("\'");
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const std::string RQUOTE("\'");
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#else
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const std::string LQUOTE("‘");
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const std::string RQUOTE("’");
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#endif
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} // namespace
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#if defined(__GNUC__)
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// GNU GCC with -Weffc++ will issue a warning regarding the upcoming class, we want to silence it:
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// warning: base class 'class std::enable_shared_from_this<cxxopts::Value>' has accessible non-virtual destructor
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#pragma GCC diagnostic ignored "-Wnon-virtual-dtor"
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#pragma GCC diagnostic push
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// This will be ignored under other compilers like LLVM clang.
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#endif
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class Value : public std::enable_shared_from_this<Value>
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{
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public:
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virtual ~Value() = default;
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virtual
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std::shared_ptr<Value>
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clone() const = 0;
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virtual void
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parse(const std::string& text) const = 0;
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virtual void
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parse() const = 0;
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virtual bool
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has_default() const = 0;
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virtual bool
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is_container() const = 0;
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virtual bool
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has_implicit() const = 0;
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virtual std::string
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get_default_value() const = 0;
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virtual std::string
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get_implicit_value() const = 0;
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virtual std::shared_ptr<Value>
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default_value(const std::string& value) = 0;
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virtual std::shared_ptr<Value>
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implicit_value(const std::string& value) = 0;
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virtual std::shared_ptr<Value>
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no_implicit_value() = 0;
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virtual bool
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is_boolean() const = 0;
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};
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#if defined(__GNUC__)
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#pragma GCC diagnostic pop
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||
#endif
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||
class OptionException : public std::exception
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||
{
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||
public:
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||
explicit OptionException(std::string message)
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||
: m_message(std::move(message))
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||
{
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||
}
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|
||
CXXOPTS_NODISCARD
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||
const char*
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||
what() const noexcept override
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||
{
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return m_message.c_str();
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||
}
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||
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||
private:
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||
std::string m_message;
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||
};
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class OptionSpecException : public OptionException
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{
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||
public:
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||
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explicit OptionSpecException(const std::string& message)
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||
: OptionException(message)
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||
{
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||
}
|
||
};
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|
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class OptionParseException : public OptionException
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||
{
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||
public:
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||
explicit OptionParseException(const std::string& message)
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: OptionException(message)
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||
{
|
||
}
|
||
};
|
||
|
||
class option_exists_error : public OptionSpecException
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||
{
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public:
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||
explicit option_exists_error(const std::string& option)
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: OptionSpecException("Option " + LQUOTE + option + RQUOTE + " already exists")
|
||
{
|
||
}
|
||
};
|
||
|
||
class invalid_option_format_error : public OptionSpecException
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||
{
|
||
public:
|
||
explicit invalid_option_format_error(const std::string& format)
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: OptionSpecException("Invalid option format " + LQUOTE + format + RQUOTE)
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||
{
|
||
}
|
||
};
|
||
|
||
class option_syntax_exception : public OptionParseException {
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||
public:
|
||
explicit option_syntax_exception(const std::string& text)
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||
: OptionParseException("Argument " + LQUOTE + text + RQUOTE +
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||
" starts with a - but has incorrect syntax")
|
||
{
|
||
}
|
||
};
|
||
|
||
class option_not_exists_exception : public OptionParseException
|
||
{
|
||
public:
|
||
explicit option_not_exists_exception(const std::string& option)
|
||
: OptionParseException("Option " + LQUOTE + option + RQUOTE + " does not exist")
|
||
{
|
||
}
|
||
};
|
||
|
||
class missing_argument_exception : public OptionParseException
|
||
{
|
||
public:
|
||
explicit missing_argument_exception(const std::string& option)
|
||
: OptionParseException(
|
||
"Option " + LQUOTE + option + RQUOTE + " is missing an argument"
|
||
)
|
||
{
|
||
}
|
||
};
|
||
|
||
class option_requires_argument_exception : public OptionParseException
|
||
{
|
||
public:
|
||
explicit option_requires_argument_exception(const std::string& option)
|
||
: OptionParseException(
|
||
"Option " + LQUOTE + option + RQUOTE + " requires an argument"
|
||
)
|
||
{
|
||
}
|
||
};
|
||
|
||
class option_not_has_argument_exception : public OptionParseException
|
||
{
|
||
public:
|
||
option_not_has_argument_exception
|
||
(
|
||
const std::string& option,
|
||
const std::string& arg
|
||
)
|
||
: OptionParseException(
|
||
"Option " + LQUOTE + option + RQUOTE +
|
||
" does not take an argument, but argument " +
|
||
LQUOTE + arg + RQUOTE + " given"
|
||
)
|
||
{
|
||
}
|
||
};
|
||
|
||
class option_not_present_exception : public OptionParseException
|
||
{
|
||
public:
|
||
explicit option_not_present_exception(const std::string& option)
|
||
: OptionParseException("Option " + LQUOTE + option + RQUOTE + " not present")
|
||
{
|
||
}
|
||
};
|
||
|
||
class option_has_no_value_exception : public OptionException
|
||
{
|
||
public:
|
||
explicit option_has_no_value_exception(const std::string& option)
|
||
: OptionException(
|
||
option.empty() ?
|
||
("Option " + LQUOTE + option + RQUOTE + " has no value") :
|
||
"Option has no value")
|
||
{
|
||
}
|
||
};
|
||
|
||
class argument_incorrect_type : public OptionParseException
|
||
{
|
||
public:
|
||
explicit argument_incorrect_type
|
||
(
|
||
const std::string& arg
|
||
)
|
||
: OptionParseException(
|
||
"Argument " + LQUOTE + arg + RQUOTE + " failed to parse"
|
||
)
|
||
{
|
||
}
|
||
};
|
||
|
||
class option_required_exception : public OptionParseException
|
||
{
|
||
public:
|
||
explicit option_required_exception(const std::string& option)
|
||
: OptionParseException(
|
||
"Option " + LQUOTE + option + RQUOTE + " is required but not present"
|
||
)
|
||
{
|
||
}
|
||
};
|
||
|
||
template <typename T>
|
||
void throw_or_mimic(const std::string& text)
|
||
{
|
||
static_assert(std::is_base_of<std::exception, T>::value,
|
||
"throw_or_mimic only works on std::exception and "
|
||
"deriving classes");
|
||
|
||
#ifndef CXXOPTS_NO_EXCEPTIONS
|
||
// If CXXOPTS_NO_EXCEPTIONS is not defined, just throw
|
||
throw T{text};
|
||
#else
|
||
// Otherwise manually instantiate the exception, print what() to stderr,
|
||
// and exit
|
||
T exception{text};
|
||
std::cerr << exception.what() << std::endl;
|
||
std::exit(EXIT_FAILURE);
|
||
#endif
|
||
}
|
||
|
||
namespace values
|
||
{
|
||
namespace
|
||
{
|
||
std::basic_regex<char> integer_pattern
|
||
("(-)?(0x)?([0-9a-zA-Z]+)|((0x)?0)");
|
||
std::basic_regex<char> truthy_pattern
|
||
("(t|T)(rue)?|1");
|
||
std::basic_regex<char> falsy_pattern
|
||
("(f|F)(alse)?|0");
|
||
} // namespace
|
||
|
||
namespace detail
|
||
{
|
||
template <typename T, bool B>
|
||
struct SignedCheck;
|
||
|
||
template <typename T>
|
||
struct SignedCheck<T, true>
|
||
{
|
||
template <typename U>
|
||
void
|
||
operator()(bool negative, U u, const std::string& text)
|
||
{
|
||
if (negative)
|
||
{
|
||
if (u > static_cast<U>((std::numeric_limits<T>::min)()))
|
||
{
|
||
throw_or_mimic<argument_incorrect_type>(text);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (u > static_cast<U>((std::numeric_limits<T>::max)()))
|
||
{
|
||
throw_or_mimic<argument_incorrect_type>(text);
|
||
}
|
||
}
|
||
}
|
||
};
|
||
|
||
template <typename T>
|
||
struct SignedCheck<T, false>
|
||
{
|
||
template <typename U>
|
||
void
|
||
operator()(bool, U, const std::string&) {}
|
||
};
|
||
|
||
template <typename T, typename U>
|
||
void
|
||
check_signed_range(bool negative, U value, const std::string& text)
|
||
{
|
||
SignedCheck<T, std::numeric_limits<T>::is_signed>()(negative, value, text);
|
||
}
|
||
} // namespace detail
|
||
|
||
template <typename R, typename T>
|
||
void
|
||
checked_negate(R& r, T&& t, const std::string&, std::true_type)
|
||
{
|
||
// if we got to here, then `t` is a positive number that fits into
|
||
// `R`. So to avoid MSVC C4146, we first cast it to `R`.
|
||
// See https://github.com/jarro2783/cxxopts/issues/62 for more details.
|
||
r = static_cast<R>(-static_cast<R>(t-1)-1);
|
||
}
|
||
|
||
template <typename R, typename T>
|
||
void
|
||
checked_negate(R&, T&&, const std::string& text, std::false_type)
|
||
{
|
||
throw_or_mimic<argument_incorrect_type>(text);
|
||
}
|
||
|
||
template <typename T>
|
||
void
|
||
integer_parser(const std::string& text, T& value)
|
||
{
|
||
std::smatch match;
|
||
std::regex_match(text, match, integer_pattern);
|
||
|
||
if (match.length() == 0)
|
||
{
|
||
throw_or_mimic<argument_incorrect_type>(text);
|
||
}
|
||
|
||
if (match.length(4) > 0)
|
||
{
|
||
value = 0;
|
||
return;
|
||
}
|
||
|
||
using US = typename std::make_unsigned<T>::type;
|
||
|
||
constexpr bool is_signed = std::numeric_limits<T>::is_signed;
|
||
const bool negative = match.length(1) > 0;
|
||
const uint8_t base = match.length(2) > 0 ? 16 : 10;
|
||
|
||
auto value_match = match[3];
|
||
|
||
US result = 0;
|
||
|
||
for (auto iter = value_match.first; iter != value_match.second; ++iter)
|
||
{
|
||
US digit = 0;
|
||
|
||
if (*iter >= '0' && *iter <= '9')
|
||
{
|
||
digit = static_cast<US>(*iter - '0');
|
||
}
|
||
else if (base == 16 && *iter >= 'a' && *iter <= 'f')
|
||
{
|
||
digit = static_cast<US>(*iter - 'a' + 10);
|
||
}
|
||
else if (base == 16 && *iter >= 'A' && *iter <= 'F')
|
||
{
|
||
digit = static_cast<US>(*iter - 'A' + 10);
|
||
}
|
||
else
|
||
{
|
||
throw_or_mimic<argument_incorrect_type>(text);
|
||
}
|
||
|
||
const US next = static_cast<US>(result * base + digit);
|
||
if (result > next)
|
||
{
|
||
throw_or_mimic<argument_incorrect_type>(text);
|
||
}
|
||
|
||
result = next;
|
||
}
|
||
|
||
detail::check_signed_range<T>(negative, result, text);
|
||
|
||
if (negative)
|
||
{
|
||
checked_negate<T>(value, result, text, std::integral_constant<bool, is_signed>());
|
||
}
|
||
else
|
||
{
|
||
value = static_cast<T>(result);
|
||
}
|
||
}
|
||
|
||
template <typename T>
|
||
void stringstream_parser(const std::string& text, T& value)
|
||
{
|
||
std::stringstream in(text);
|
||
in >> value;
|
||
if (!in) {
|
||
throw_or_mimic<argument_incorrect_type>(text);
|
||
}
|
||
}
|
||
|
||
inline
|
||
void
|
||
parse_value(const std::string& text, uint8_t& value)
|
||
{
|
||
integer_parser(text, value);
|
||
}
|
||
|
||
inline
|
||
void
|
||
parse_value(const std::string& text, int8_t& value)
|
||
{
|
||
integer_parser(text, value);
|
||
}
|
||
|
||
inline
|
||
void
|
||
parse_value(const std::string& text, uint16_t& value)
|
||
{
|
||
integer_parser(text, value);
|
||
}
|
||
|
||
inline
|
||
void
|
||
parse_value(const std::string& text, int16_t& value)
|
||
{
|
||
integer_parser(text, value);
|
||
}
|
||
|
||
inline
|
||
void
|
||
parse_value(const std::string& text, uint32_t& value)
|
||
{
|
||
integer_parser(text, value);
|
||
}
|
||
|
||
inline
|
||
void
|
||
parse_value(const std::string& text, int32_t& value)
|
||
{
|
||
integer_parser(text, value);
|
||
}
|
||
|
||
inline
|
||
void
|
||
parse_value(const std::string& text, uint64_t& value)
|
||
{
|
||
integer_parser(text, value);
|
||
}
|
||
|
||
inline
|
||
void
|
||
parse_value(const std::string& text, int64_t& value)
|
||
{
|
||
integer_parser(text, value);
|
||
}
|
||
|
||
inline
|
||
void
|
||
parse_value(const std::string& text, bool& value)
|
||
{
|
||
std::smatch result;
|
||
std::regex_match(text, result, truthy_pattern);
|
||
|
||
if (!result.empty())
|
||
{
|
||
value = true;
|
||
return;
|
||
}
|
||
|
||
std::regex_match(text, result, falsy_pattern);
|
||
if (!result.empty())
|
||
{
|
||
value = false;
|
||
return;
|
||
}
|
||
|
||
throw_or_mimic<argument_incorrect_type>(text);
|
||
}
|
||
|
||
inline
|
||
void
|
||
parse_value(const std::string& text, std::string& value)
|
||
{
|
||
value = text;
|
||
}
|
||
|
||
// The fallback parser. It uses the stringstream parser to parse all types
|
||
// that have not been overloaded explicitly. It has to be placed in the
|
||
// source code before all other more specialized templates.
|
||
template <typename T>
|
||
void
|
||
parse_value(const std::string& text, T& value) {
|
||
stringstream_parser(text, value);
|
||
}
|
||
|
||
template <typename T>
|
||
void
|
||
parse_value(const std::string& text, std::vector<T>& value)
|
||
{
|
||
std::stringstream in(text);
|
||
std::string token;
|
||
while(!in.eof() && std::getline(in, token, CXXOPTS_VECTOR_DELIMITER)) {
|
||
T v;
|
||
parse_value(token, v);
|
||
value.emplace_back(std::move(v));
|
||
}
|
||
}
|
||
|
||
#ifdef CXXOPTS_HAS_OPTIONAL
|
||
template <typename T>
|
||
void
|
||
parse_value(const std::string& text, std::optional<T>& value)
|
||
{
|
||
T result;
|
||
parse_value(text, result);
|
||
value = std::move(result);
|
||
}
|
||
#endif
|
||
|
||
inline
|
||
void parse_value(const std::string& text, char& c)
|
||
{
|
||
if (text.length() != 1)
|
||
{
|
||
throw_or_mimic<argument_incorrect_type>(text);
|
||
}
|
||
|
||
c = text[0];
|
||
}
|
||
|
||
template <typename T>
|
||
struct type_is_container
|
||
{
|
||
static constexpr bool value = false;
|
||
};
|
||
|
||
template <typename T>
|
||
struct type_is_container<std::vector<T>>
|
||
{
|
||
static constexpr bool value = true;
|
||
};
|
||
|
||
template <typename T>
|
||
class abstract_value : public Value
|
||
{
|
||
using Self = abstract_value<T>;
|
||
|
||
public:
|
||
abstract_value()
|
||
: m_result(std::make_shared<T>())
|
||
, m_store(m_result.get())
|
||
{
|
||
}
|
||
|
||
explicit abstract_value(T* t)
|
||
: m_store(t)
|
||
{
|
||
}
|
||
|
||
~abstract_value() override = default;
|
||
|
||
abstract_value& operator=(const abstract_value&) = default;
|
||
|
||
abstract_value(const abstract_value& rhs)
|
||
{
|
||
if (rhs.m_result)
|
||
{
|
||
m_result = std::make_shared<T>();
|
||
m_store = m_result.get();
|
||
}
|
||
else
|
||
{
|
||
m_store = rhs.m_store;
|
||
}
|
||
|
||
m_default = rhs.m_default;
|
||
m_implicit = rhs.m_implicit;
|
||
m_default_value = rhs.m_default_value;
|
||
m_implicit_value = rhs.m_implicit_value;
|
||
}
|
||
|
||
void
|
||
parse(const std::string& text) const override
|
||
{
|
||
parse_value(text, *m_store);
|
||
}
|
||
|
||
bool
|
||
is_container() const override
|
||
{
|
||
return type_is_container<T>::value;
|
||
}
|
||
|
||
void
|
||
parse() const override
|
||
{
|
||
parse_value(m_default_value, *m_store);
|
||
}
|
||
|
||
bool
|
||
has_default() const override
|
||
{
|
||
return m_default;
|
||
}
|
||
|
||
bool
|
||
has_implicit() const override
|
||
{
|
||
return m_implicit;
|
||
}
|
||
|
||
std::shared_ptr<Value>
|
||
default_value(const std::string& value) override
|
||
{
|
||
m_default = true;
|
||
m_default_value = value;
|
||
return shared_from_this();
|
||
}
|
||
|
||
std::shared_ptr<Value>
|
||
implicit_value(const std::string& value) override
|
||
{
|
||
m_implicit = true;
|
||
m_implicit_value = value;
|
||
return shared_from_this();
|
||
}
|
||
|
||
std::shared_ptr<Value>
|
||
no_implicit_value() override
|
||
{
|
||
m_implicit = false;
|
||
return shared_from_this();
|
||
}
|
||
|
||
std::string
|
||
get_default_value() const override
|
||
{
|
||
return m_default_value;
|
||
}
|
||
|
||
std::string
|
||
get_implicit_value() const override
|
||
{
|
||
return m_implicit_value;
|
||
}
|
||
|
||
bool
|
||
is_boolean() const override
|
||
{
|
||
return std::is_same<T, bool>::value;
|
||
}
|
||
|
||
const T&
|
||
get() const
|
||
{
|
||
if (m_store == nullptr)
|
||
{
|
||
return *m_result;
|
||
}
|
||
return *m_store;
|
||
}
|
||
|
||
protected:
|
||
std::shared_ptr<T> m_result{};
|
||
T* m_store{};
|
||
|
||
bool m_default = false;
|
||
bool m_implicit = false;
|
||
|
||
std::string m_default_value{};
|
||
std::string m_implicit_value{};
|
||
};
|
||
|
||
template <typename T>
|
||
class standard_value : public abstract_value<T>
|
||
{
|
||
public:
|
||
using abstract_value<T>::abstract_value;
|
||
|
||
CXXOPTS_NODISCARD
|
||
std::shared_ptr<Value>
|
||
clone() const
|
||
{
|
||
return std::make_shared<standard_value<T>>(*this);
|
||
}
|
||
};
|
||
|
||
template <>
|
||
class standard_value<bool> : public abstract_value<bool>
|
||
{
|
||
public:
|
||
~standard_value() override = default;
|
||
|
||
standard_value()
|
||
{
|
||
set_default_and_implicit();
|
||
}
|
||
|
||
explicit standard_value(bool* b)
|
||
: abstract_value(b)
|
||
{
|
||
set_default_and_implicit();
|
||
}
|
||
|
||
std::shared_ptr<Value>
|
||
clone() const override
|
||
{
|
||
return std::make_shared<standard_value<bool>>(*this);
|
||
}
|
||
|
||
private:
|
||
|
||
void
|
||
set_default_and_implicit()
|
||
{
|
||
m_default = true;
|
||
m_default_value = "false";
|
||
m_implicit = true;
|
||
m_implicit_value = "true";
|
||
}
|
||
};
|
||
} // namespace values
|
||
|
||
template <typename T>
|
||
std::shared_ptr<Value>
|
||
value()
|
||
{
|
||
return std::make_shared<values::standard_value<T>>();
|
||
}
|
||
|
||
template <typename T>
|
||
std::shared_ptr<Value>
|
||
value(T& t)
|
||
{
|
||
return std::make_shared<values::standard_value<T>>(&t);
|
||
}
|
||
|
||
class OptionAdder;
|
||
|
||
class OptionDetails
|
||
{
|
||
public:
|
||
OptionDetails
|
||
(
|
||
std::string short_,
|
||
std::string long_,
|
||
String desc,
|
||
std::shared_ptr<const Value> val
|
||
)
|
||
: m_short(std::move(short_))
|
||
, m_long(std::move(long_))
|
||
, m_desc(std::move(desc))
|
||
, m_value(std::move(val))
|
||
, m_count(0)
|
||
{
|
||
m_hash = std::hash<std::string>{}(m_long + m_short);
|
||
}
|
||
|
||
OptionDetails(const OptionDetails& rhs)
|
||
: m_desc(rhs.m_desc)
|
||
, m_count(rhs.m_count)
|
||
{
|
||
m_value = rhs.m_value->clone();
|
||
}
|
||
|
||
OptionDetails(OptionDetails&& rhs) = default;
|
||
|
||
CXXOPTS_NODISCARD
|
||
const String&
|
||
description() const
|
||
{
|
||
return m_desc;
|
||
}
|
||
|
||
CXXOPTS_NODISCARD
|
||
const Value&
|
||
value() const {
|
||
return *m_value;
|
||
}
|
||
|
||
CXXOPTS_NODISCARD
|
||
std::shared_ptr<Value>
|
||
make_storage() const
|
||
{
|
||
return m_value->clone();
|
||
}
|
||
|
||
CXXOPTS_NODISCARD
|
||
const std::string&
|
||
short_name() const
|
||
{
|
||
return m_short;
|
||
}
|
||
|
||
CXXOPTS_NODISCARD
|
||
const std::string&
|
||
long_name() const
|
||
{
|
||
return m_long;
|
||
}
|
||
|
||
size_t
|
||
hash() const
|
||
{
|
||
return m_hash;
|
||
}
|
||
|
||
private:
|
||
std::string m_short{};
|
||
std::string m_long{};
|
||
String m_desc{};
|
||
std::shared_ptr<const Value> m_value{};
|
||
int m_count;
|
||
|
||
size_t m_hash{};
|
||
};
|
||
|
||
struct HelpOptionDetails
|
||
{
|
||
std::string s;
|
||
std::string l;
|
||
String desc;
|
||
bool has_default;
|
||
std::string default_value;
|
||
bool has_implicit;
|
||
std::string implicit_value;
|
||
std::string arg_help;
|
||
bool is_container;
|
||
bool is_boolean;
|
||
};
|
||
|
||
struct HelpGroupDetails
|
||
{
|
||
std::string name{};
|
||
std::string description{};
|
||
std::vector<HelpOptionDetails> options{};
|
||
};
|
||
|
||
class OptionValue
|
||
{
|
||
public:
|
||
void
|
||
parse
|
||
(
|
||
const std::shared_ptr<const OptionDetails>& details,
|
||
const std::string& text
|
||
)
|
||
{
|
||
ensure_value(details);
|
||
++m_count;
|
||
m_value->parse(text);
|
||
m_long_name = &details->long_name();
|
||
}
|
||
|
||
void
|
||
parse_default(const std::shared_ptr<const OptionDetails>& details)
|
||
{
|
||
ensure_value(details);
|
||
m_default = true;
|
||
m_long_name = &details->long_name();
|
||
m_value->parse();
|
||
}
|
||
|
||
CXXOPTS_NODISCARD
|
||
size_t
|
||
count() const noexcept
|
||
{
|
||
return m_count;
|
||
}
|
||
|
||
// TODO: maybe default options should count towards the number of arguments
|
||
CXXOPTS_NODISCARD
|
||
bool
|
||
has_default() const noexcept
|
||
{
|
||
return m_default;
|
||
}
|
||
|
||
template <typename T>
|
||
const T&
|
||
as() const
|
||
{
|
||
if (m_value == nullptr) {
|
||
throw_or_mimic<option_has_no_value_exception>(
|
||
m_long_name == nullptr ? "" : *m_long_name);
|
||
}
|
||
|
||
#ifdef CXXOPTS_NO_RTTI
|
||
return static_cast<const values::standard_value<T>&>(*m_value).get();
|
||
#else
|
||
return dynamic_cast<const values::standard_value<T>&>(*m_value).get();
|
||
#endif
|
||
}
|
||
|
||
private:
|
||
void
|
||
ensure_value(const std::shared_ptr<const OptionDetails>& details)
|
||
{
|
||
if (m_value == nullptr)
|
||
{
|
||
m_value = details->make_storage();
|
||
}
|
||
}
|
||
|
||
|
||
const std::string* m_long_name = nullptr;
|
||
// Holding this pointer is safe, since OptionValue's only exist in key-value pairs,
|
||
// where the key has the string we point to.
|
||
std::shared_ptr<Value> m_value{};
|
||
size_t m_count = 0;
|
||
bool m_default = false;
|
||
};
|
||
|
||
class KeyValue
|
||
{
|
||
public:
|
||
KeyValue(std::string key_, std::string value_)
|
||
: m_key(std::move(key_))
|
||
, m_value(std::move(value_))
|
||
{
|
||
}
|
||
|
||
CXXOPTS_NODISCARD
|
||
const std::string&
|
||
key() const
|
||
{
|
||
return m_key;
|
||
}
|
||
|
||
CXXOPTS_NODISCARD
|
||
const std::string&
|
||
value() const
|
||
{
|
||
return m_value;
|
||
}
|
||
|
||
template <typename T>
|
||
T
|
||
as() const
|
||
{
|
||
T result;
|
||
values::parse_value(m_value, result);
|
||
return result;
|
||
}
|
||
|
||
private:
|
||
std::string m_key;
|
||
std::string m_value;
|
||
};
|
||
|
||
using ParsedHashMap = std::unordered_map<size_t, OptionValue>;
|
||
using NameHashMap = std::unordered_map<std::string, size_t>;
|
||
|
||
class ParseResult
|
||
{
|
||
public:
|
||
|
||
ParseResult() {}
|
||
|
||
ParseResult(const ParseResult&) = default;
|
||
|
||
ParseResult(NameHashMap&& keys, ParsedHashMap&& values, std::vector<KeyValue> sequential, std::vector<std::string>&& unmatched_args)
|
||
: m_keys(std::move(keys))
|
||
, m_values(std::move(values))
|
||
, m_sequential(std::move(sequential))
|
||
, m_unmatched(std::move(unmatched_args))
|
||
{
|
||
}
|
||
|
||
ParseResult& operator=(ParseResult&&) = default;
|
||
ParseResult& operator=(const ParseResult&) = default;
|
||
|
||
size_t
|
||
count(const std::string& o) const
|
||
{
|
||
auto iter = m_keys.find(o);
|
||
if (iter == m_keys.end())
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
auto viter = m_values.find(iter->second);
|
||
|
||
if (viter == m_values.end())
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
return viter->second.count();
|
||
}
|
||
|
||
const OptionValue&
|
||
operator[](const std::string& option) const
|
||
{
|
||
auto iter = m_keys.find(option);
|
||
|
||
if (iter == m_keys.end())
|
||
{
|
||
throw_or_mimic<option_not_present_exception>(option);
|
||
}
|
||
|
||
auto viter = m_values.find(iter->second);
|
||
|
||
if (viter == m_values.end())
|
||
{
|
||
throw_or_mimic<option_not_present_exception>(option);
|
||
}
|
||
|
||
return viter->second;
|
||
}
|
||
|
||
const std::vector<KeyValue>&
|
||
arguments() const
|
||
{
|
||
return m_sequential;
|
||
}
|
||
|
||
const std::vector<std::string>&
|
||
unmatched() const
|
||
{
|
||
return m_unmatched;
|
||
}
|
||
|
||
private:
|
||
NameHashMap m_keys{};
|
||
ParsedHashMap m_values{};
|
||
std::vector<KeyValue> m_sequential{};
|
||
std::vector<std::string> m_unmatched{};
|
||
};
|
||
|
||
struct Option
|
||
{
|
||
Option
|
||
(
|
||
std::string opts,
|
||
std::string desc,
|
||
std::shared_ptr<const Value> value = ::cxxopts::value<bool>(),
|
||
std::string arg_help = ""
|
||
)
|
||
: opts_(std::move(opts))
|
||
, desc_(std::move(desc))
|
||
, value_(std::move(value))
|
||
, arg_help_(std::move(arg_help))
|
||
{
|
||
}
|
||
|
||
std::string opts_;
|
||
std::string desc_;
|
||
std::shared_ptr<const Value> value_;
|
||
std::string arg_help_;
|
||
};
|
||
|
||
using OptionMap = std::unordered_map<std::string, std::shared_ptr<OptionDetails>>;
|
||
using PositionalList = std::vector<std::string>;
|
||
using PositionalListIterator = PositionalList::const_iterator;
|
||
|
||
class OptionParser
|
||
{
|
||
public:
|
||
OptionParser(const OptionMap& options, const PositionalList& positional, bool allow_unrecognised)
|
||
: m_options(options)
|
||
, m_positional(positional)
|
||
, m_allow_unrecognised(allow_unrecognised)
|
||
{
|
||
}
|
||
|
||
ParseResult
|
||
parse(int argc, const char* const* argv);
|
||
|
||
bool
|
||
consume_positional(const std::string& a, PositionalListIterator& next);
|
||
|
||
void
|
||
checked_parse_arg
|
||
(
|
||
int argc,
|
||
const char* const* argv,
|
||
int& current,
|
||
const std::shared_ptr<OptionDetails>& value,
|
||
const std::string& name
|
||
);
|
||
|
||
void
|
||
add_to_option(OptionMap::const_iterator iter, const std::string& option, const std::string& arg);
|
||
|
||
void
|
||
parse_option
|
||
(
|
||
const std::shared_ptr<OptionDetails>& value,
|
||
const std::string& name,
|
||
const std::string& arg = ""
|
||
);
|
||
|
||
void
|
||
parse_default(const std::shared_ptr<OptionDetails>& details);
|
||
|
||
private:
|
||
|
||
void finalise_aliases();
|
||
|
||
const OptionMap& m_options;
|
||
const PositionalList& m_positional;
|
||
|
||
std::vector<KeyValue> m_sequential{};
|
||
bool m_allow_unrecognised;
|
||
|
||
ParsedHashMap m_parsed{};
|
||
NameHashMap m_keys{};
|
||
};
|
||
|
||
class Options
|
||
{
|
||
public:
|
||
|
||
explicit Options(std::string program, std::string help_string = "")
|
||
: m_program(std::move(program))
|
||
, m_help_string(toLocalString(std::move(help_string)))
|
||
, m_custom_help("[OPTION...]")
|
||
, m_positional_help("positional parameters")
|
||
, m_show_positional(false)
|
||
, m_allow_unrecognised(false)
|
||
, m_options(std::make_shared<OptionMap>())
|
||
{
|
||
}
|
||
|
||
Options&
|
||
positional_help(std::string help_text)
|
||
{
|
||
m_positional_help = std::move(help_text);
|
||
return *this;
|
||
}
|
||
|
||
Options&
|
||
custom_help(std::string help_text)
|
||
{
|
||
m_custom_help = std::move(help_text);
|
||
return *this;
|
||
}
|
||
|
||
Options&
|
||
show_positional_help()
|
||
{
|
||
m_show_positional = true;
|
||
return *this;
|
||
}
|
||
|
||
Options&
|
||
allow_unrecognised_options()
|
||
{
|
||
m_allow_unrecognised = true;
|
||
return *this;
|
||
}
|
||
|
||
ParseResult
|
||
parse(int argc, const char* const* argv);
|
||
|
||
OptionAdder
|
||
add_options(std::string group = "");
|
||
|
||
void
|
||
add_options
|
||
(
|
||
const std::string& group,
|
||
std::initializer_list<Option> options
|
||
);
|
||
|
||
void
|
||
add_option
|
||
(
|
||
const std::string& group,
|
||
const Option& option
|
||
);
|
||
|
||
void
|
||
add_option
|
||
(
|
||
const std::string& group,
|
||
const std::string& s,
|
||
const std::string& l,
|
||
std::string desc,
|
||
const std::shared_ptr<const Value>& value,
|
||
std::string arg_help
|
||
);
|
||
|
||
//parse positional arguments into the given option
|
||
void
|
||
parse_positional(std::string option);
|
||
|
||
void
|
||
parse_positional(std::vector<std::string> options);
|
||
|
||
void
|
||
parse_positional(std::initializer_list<std::string> options);
|
||
|
||
template <typename Iterator>
|
||
void
|
||
parse_positional(Iterator begin, Iterator end) {
|
||
parse_positional(std::vector<std::string>{begin, end});
|
||
}
|
||
|
||
std::string
|
||
help(const std::vector<std::string>& groups = {}) const;
|
||
|
||
std::vector<std::string>
|
||
groups() const;
|
||
|
||
const HelpGroupDetails&
|
||
group_help(const std::string& group) const;
|
||
|
||
private:
|
||
|
||
void
|
||
add_one_option
|
||
(
|
||
const std::string& option,
|
||
const std::shared_ptr<OptionDetails>& details
|
||
);
|
||
|
||
String
|
||
help_one_group(const std::string& group) const;
|
||
|
||
void
|
||
generate_group_help
|
||
(
|
||
String& result,
|
||
const std::vector<std::string>& groups
|
||
) const;
|
||
|
||
void
|
||
generate_all_groups_help(String& result) const;
|
||
|
||
std::string m_program{};
|
||
String m_help_string{};
|
||
std::string m_custom_help{};
|
||
std::string m_positional_help{};
|
||
bool m_show_positional;
|
||
bool m_allow_unrecognised;
|
||
|
||
std::shared_ptr<OptionMap> m_options;
|
||
std::vector<std::string> m_positional{};
|
||
std::unordered_set<std::string> m_positional_set{};
|
||
|
||
//mapping from groups to help options
|
||
std::map<std::string, HelpGroupDetails> m_help{};
|
||
|
||
std::list<OptionDetails> m_option_list{};
|
||
std::unordered_map<std::string, decltype(m_option_list)::iterator> m_option_map{};
|
||
};
|
||
|
||
class OptionAdder
|
||
{
|
||
public:
|
||
|
||
OptionAdder(Options& options, std::string group)
|
||
: m_options(options), m_group(std::move(group))
|
||
{
|
||
}
|
||
|
||
OptionAdder&
|
||
operator()
|
||
(
|
||
const std::string& opts,
|
||
const std::string& desc,
|
||
const std::shared_ptr<const Value>& value
|
||
= ::cxxopts::value<bool>(),
|
||
std::string arg_help = ""
|
||
);
|
||
|
||
private:
|
||
Options& m_options;
|
||
std::string m_group;
|
||
};
|
||
|
||
namespace
|
||
{
|
||
constexpr int OPTION_LONGEST = 30;
|
||
constexpr int OPTION_DESC_GAP = 2;
|
||
|
||
std::basic_regex<char> option_matcher
|
||
("--([[:alnum:]][-_[:alnum:]]+)(=(.*))?|-([[:alnum:]]+)");
|
||
|
||
std::basic_regex<char> option_specifier
|
||
("(([[:alnum:]]),)?[ ]*([[:alnum:]][-_[:alnum:]]*)?");
|
||
|
||
String
|
||
format_option
|
||
(
|
||
const HelpOptionDetails& o
|
||
)
|
||
{
|
||
const auto& s = o.s;
|
||
const auto& l = o.l;
|
||
|
||
String result = " ";
|
||
|
||
if (!s.empty())
|
||
{
|
||
result += "-" + toLocalString(s);
|
||
if (!l.empty())
|
||
{
|
||
result += ",";
|
||
}
|
||
}
|
||
else
|
||
{
|
||
result += " ";
|
||
}
|
||
|
||
if (!l.empty())
|
||
{
|
||
result += " --" + toLocalString(l);
|
||
}
|
||
|
||
auto arg = !o.arg_help.empty() ? toLocalString(o.arg_help) : "arg";
|
||
|
||
if (!o.is_boolean)
|
||
{
|
||
if (o.has_implicit)
|
||
{
|
||
result += " [=" + arg + "(=" + toLocalString(o.implicit_value) + ")]";
|
||
}
|
||
else
|
||
{
|
||
result += " " + arg;
|
||
}
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
String
|
||
format_description
|
||
(
|
||
const HelpOptionDetails& o,
|
||
size_t start,
|
||
size_t width
|
||
)
|
||
{
|
||
auto desc = o.desc;
|
||
|
||
if (o.has_default && (!o.is_boolean || o.default_value != "false"))
|
||
{
|
||
if(!o.default_value.empty())
|
||
{
|
||
desc += toLocalString(" (default: " + o.default_value + ")");
|
||
}
|
||
else
|
||
{
|
||
desc += toLocalString(" (default: \"\")");
|
||
}
|
||
}
|
||
|
||
String result;
|
||
|
||
auto current = std::begin(desc);
|
||
auto startLine = current;
|
||
auto lastSpace = current;
|
||
|
||
auto size = size_t{};
|
||
|
||
while (current != std::end(desc))
|
||
{
|
||
if (*current == ' ')
|
||
{
|
||
lastSpace = current;
|
||
}
|
||
|
||
if (*current == '\n')
|
||
{
|
||
startLine = current + 1;
|
||
lastSpace = startLine;
|
||
}
|
||
else if (size > width)
|
||
{
|
||
if (lastSpace == startLine)
|
||
{
|
||
stringAppend(result, startLine, current + 1);
|
||
stringAppend(result, "\n");
|
||
stringAppend(result, start, ' ');
|
||
startLine = current + 1;
|
||
lastSpace = startLine;
|
||
}
|
||
else
|
||
{
|
||
stringAppend(result, startLine, lastSpace);
|
||
stringAppend(result, "\n");
|
||
stringAppend(result, start, ' ');
|
||
startLine = lastSpace + 1;
|
||
lastSpace = startLine;
|
||
}
|
||
size = 0;
|
||
}
|
||
else
|
||
{
|
||
++size;
|
||
}
|
||
|
||
++current;
|
||
}
|
||
|
||
//append whatever is left
|
||
stringAppend(result, startLine, current);
|
||
|
||
return result;
|
||
}
|
||
} // namespace
|
||
|
||
inline
|
||
void
|
||
Options::add_options
|
||
(
|
||
const std::string &group,
|
||
std::initializer_list<Option> options
|
||
)
|
||
{
|
||
OptionAdder option_adder(*this, group);
|
||
for (const auto &option: options)
|
||
{
|
||
option_adder(option.opts_, option.desc_, option.value_, option.arg_help_);
|
||
}
|
||
}
|
||
|
||
inline
|
||
OptionAdder
|
||
Options::add_options(std::string group)
|
||
{
|
||
return OptionAdder(*this, std::move(group));
|
||
}
|
||
|
||
inline
|
||
OptionAdder&
|
||
OptionAdder::operator()
|
||
(
|
||
const std::string& opts,
|
||
const std::string& desc,
|
||
const std::shared_ptr<const Value>& value,
|
||
std::string arg_help
|
||
)
|
||
{
|
||
std::match_results<const char*> result;
|
||
std::regex_match(opts.c_str(), result, option_specifier);
|
||
|
||
if (result.empty())
|
||
{
|
||
throw_or_mimic<invalid_option_format_error>(opts);
|
||
}
|
||
|
||
const auto& short_match = result[2];
|
||
const auto& long_match = result[3];
|
||
|
||
if (!short_match.length() && !long_match.length())
|
||
{
|
||
throw_or_mimic<invalid_option_format_error>(opts);
|
||
} else if (long_match.length() == 1 && short_match.length())
|
||
{
|
||
throw_or_mimic<invalid_option_format_error>(opts);
|
||
}
|
||
|
||
auto option_names = []
|
||
(
|
||
const std::sub_match<const char*>& short_,
|
||
const std::sub_match<const char*>& long_
|
||
)
|
||
{
|
||
if (long_.length() == 1)
|
||
{
|
||
return std::make_tuple(long_.str(), short_.str());
|
||
}
|
||
return std::make_tuple(short_.str(), long_.str());
|
||
}(short_match, long_match);
|
||
|
||
m_options.add_option
|
||
(
|
||
m_group,
|
||
std::get<0>(option_names),
|
||
std::get<1>(option_names),
|
||
desc,
|
||
value,
|
||
std::move(arg_help)
|
||
);
|
||
|
||
return *this;
|
||
}
|
||
|
||
inline
|
||
void
|
||
OptionParser::parse_default(const std::shared_ptr<OptionDetails>& details)
|
||
{
|
||
// TODO: remove the duplicate code here
|
||
auto& store = m_parsed[details->hash()];
|
||
store.parse_default(details);
|
||
}
|
||
|
||
inline
|
||
void
|
||
OptionParser::parse_option
|
||
(
|
||
const std::shared_ptr<OptionDetails>& value,
|
||
const std::string& /*name*/,
|
||
const std::string& arg
|
||
)
|
||
{
|
||
auto hash = value->hash();
|
||
auto& result = m_parsed[hash];
|
||
result.parse(value, arg);
|
||
|
||
m_sequential.emplace_back(value->long_name(), arg);
|
||
}
|
||
|
||
inline
|
||
void
|
||
OptionParser::checked_parse_arg
|
||
(
|
||
int argc,
|
||
const char* const* argv,
|
||
int& current,
|
||
const std::shared_ptr<OptionDetails>& value,
|
||
const std::string& name
|
||
)
|
||
{
|
||
if (current + 1 >= argc)
|
||
{
|
||
if (value->value().has_implicit())
|
||
{
|
||
parse_option(value, name, value->value().get_implicit_value());
|
||
}
|
||
else
|
||
{
|
||
throw_or_mimic<missing_argument_exception>(name);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (value->value().has_implicit())
|
||
{
|
||
parse_option(value, name, value->value().get_implicit_value());
|
||
}
|
||
else
|
||
{
|
||
parse_option(value, name, argv[current + 1]);
|
||
++current;
|
||
}
|
||
}
|
||
}
|
||
|
||
inline
|
||
void
|
||
OptionParser::add_to_option(OptionMap::const_iterator iter, const std::string& option, const std::string& arg)
|
||
{
|
||
parse_option(iter->second, option, arg);
|
||
}
|
||
|
||
inline
|
||
bool
|
||
OptionParser::consume_positional(const std::string& a, PositionalListIterator& next)
|
||
{
|
||
while (next != m_positional.end())
|
||
{
|
||
auto iter = m_options.find(*next);
|
||
if (iter != m_options.end())
|
||
{
|
||
auto& result = m_parsed[iter->second->hash()];
|
||
if (!iter->second->value().is_container())
|
||
{
|
||
if (result.count() == 0)
|
||
{
|
||
add_to_option(iter, *next, a);
|
||
++next;
|
||
return true;
|
||
}
|
||
++next;
|
||
continue;
|
||
}
|
||
add_to_option(iter, *next, a);
|
||
return true;
|
||
}
|
||
throw_or_mimic<option_not_exists_exception>(*next);
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
inline
|
||
void
|
||
Options::parse_positional(std::string option)
|
||
{
|
||
parse_positional(std::vector<std::string>{std::move(option)});
|
||
}
|
||
|
||
inline
|
||
void
|
||
Options::parse_positional(std::vector<std::string> options)
|
||
{
|
||
m_positional = std::move(options);
|
||
|
||
m_positional_set.insert(m_positional.begin(), m_positional.end());
|
||
}
|
||
|
||
inline
|
||
void
|
||
Options::parse_positional(std::initializer_list<std::string> options)
|
||
{
|
||
parse_positional(std::vector<std::string>(options));
|
||
}
|
||
|
||
inline
|
||
ParseResult
|
||
Options::parse(int argc, const char* const* argv)
|
||
{
|
||
OptionParser parser(*m_options, m_positional, m_allow_unrecognised);
|
||
|
||
return parser.parse(argc, argv);
|
||
}
|
||
|
||
inline ParseResult
|
||
OptionParser::parse(int argc, const char* const* argv)
|
||
{
|
||
int current = 1;
|
||
bool consume_remaining = false;
|
||
PositionalListIterator next_positional = m_positional.begin();
|
||
|
||
std::vector<std::string> unmatched;
|
||
|
||
while (current != argc)
|
||
{
|
||
if (strcmp(argv[current], "--") == 0)
|
||
{
|
||
consume_remaining = true;
|
||
++current;
|
||
break;
|
||
}
|
||
|
||
std::match_results<const char*> result;
|
||
std::regex_match(argv[current], result, option_matcher);
|
||
|
||
if (result.empty())
|
||
{
|
||
//not a flag
|
||
|
||
// but if it starts with a `-`, then it's an error
|
||
if (argv[current][0] == '-' && argv[current][1] != '\0') {
|
||
if (!m_allow_unrecognised) {
|
||
throw_or_mimic<option_syntax_exception>(argv[current]);
|
||
}
|
||
}
|
||
|
||
//if true is returned here then it was consumed, otherwise it is
|
||
//ignored
|
||
if (consume_positional(argv[current], next_positional))
|
||
{
|
||
}
|
||
else
|
||
{
|
||
unmatched.push_back(argv[current]);
|
||
}
|
||
//if we return from here then it was parsed successfully, so continue
|
||
}
|
||
else
|
||
{
|
||
//short or long option?
|
||
if (result[4].length() != 0)
|
||
{
|
||
const std::string& s = result[4];
|
||
|
||
for (std::size_t i = 0; i != s.size(); ++i)
|
||
{
|
||
std::string name(1, s[i]);
|
||
auto iter = m_options.find(name);
|
||
|
||
if (iter == m_options.end())
|
||
{
|
||
if (m_allow_unrecognised)
|
||
{
|
||
continue;
|
||
}
|
||
//error
|
||
throw_or_mimic<option_not_exists_exception>(name);
|
||
}
|
||
|
||
auto value = iter->second;
|
||
|
||
if (i + 1 == s.size())
|
||
{
|
||
//it must be the last argument
|
||
checked_parse_arg(argc, argv, current, value, name);
|
||
}
|
||
else if (value->value().has_implicit())
|
||
{
|
||
parse_option(value, name, value->value().get_implicit_value());
|
||
}
|
||
else
|
||
{
|
||
//error
|
||
throw_or_mimic<option_requires_argument_exception>(name);
|
||
}
|
||
}
|
||
}
|
||
else if (result[1].length() != 0)
|
||
{
|
||
const std::string& name = result[1];
|
||
|
||
auto iter = m_options.find(name);
|
||
|
||
if (iter == m_options.end())
|
||
{
|
||
if (m_allow_unrecognised)
|
||
{
|
||
// keep unrecognised options in argument list, skip to next argument
|
||
unmatched.push_back(argv[current]);
|
||
++current;
|
||
continue;
|
||
}
|
||
//error
|
||
throw_or_mimic<option_not_exists_exception>(name);
|
||
}
|
||
|
||
auto opt = iter->second;
|
||
|
||
//equals provided for long option?
|
||
if (result[2].length() != 0)
|
||
{
|
||
//parse the option given
|
||
|
||
parse_option(opt, name, result[3]);
|
||
}
|
||
else
|
||
{
|
||
//parse the next argument
|
||
checked_parse_arg(argc, argv, current, opt, name);
|
||
}
|
||
}
|
||
|
||
}
|
||
|
||
++current;
|
||
}
|
||
|
||
for (auto& opt : m_options)
|
||
{
|
||
auto& detail = opt.second;
|
||
const auto& value = detail->value();
|
||
|
||
auto& store = m_parsed[detail->hash()];
|
||
|
||
if(value.has_default() && !store.count() && !store.has_default()){
|
||
parse_default(detail);
|
||
}
|
||
}
|
||
|
||
if (consume_remaining)
|
||
{
|
||
while (current < argc)
|
||
{
|
||
if (!consume_positional(argv[current], next_positional)) {
|
||
break;
|
||
}
|
||
++current;
|
||
}
|
||
|
||
//adjust argv for any that couldn't be swallowed
|
||
while (current != argc) {
|
||
unmatched.push_back(argv[current]);
|
||
++current;
|
||
}
|
||
}
|
||
|
||
finalise_aliases();
|
||
|
||
ParseResult parsed(std::move(m_keys), std::move(m_parsed), std::move(m_sequential), std::move(unmatched));
|
||
return parsed;
|
||
}
|
||
|
||
inline
|
||
void
|
||
OptionParser::finalise_aliases()
|
||
{
|
||
for (auto& option: m_options)
|
||
{
|
||
auto& detail = *option.second;
|
||
auto hash = detail.hash();
|
||
m_keys[detail.short_name()] = hash;
|
||
m_keys[detail.long_name()] = hash;
|
||
|
||
m_parsed.emplace(hash, OptionValue());
|
||
}
|
||
}
|
||
|
||
inline
|
||
void
|
||
Options::add_option
|
||
(
|
||
const std::string& group,
|
||
const Option& option
|
||
)
|
||
{
|
||
add_options(group, {option});
|
||
}
|
||
|
||
inline
|
||
void
|
||
Options::add_option
|
||
(
|
||
const std::string& group,
|
||
const std::string& s,
|
||
const std::string& l,
|
||
std::string desc,
|
||
const std::shared_ptr<const Value>& value,
|
||
std::string arg_help
|
||
)
|
||
{
|
||
auto stringDesc = toLocalString(std::move(desc));
|
||
auto option = std::make_shared<OptionDetails>(s, l, stringDesc, value);
|
||
|
||
if (!s.empty())
|
||
{
|
||
add_one_option(s, option);
|
||
}
|
||
|
||
if (!l.empty())
|
||
{
|
||
add_one_option(l, option);
|
||
}
|
||
|
||
m_option_list.push_front(*option.get());
|
||
auto iter = m_option_list.begin();
|
||
m_option_map[s] = iter;
|
||
m_option_map[l] = iter;
|
||
|
||
//add the help details
|
||
auto& options = m_help[group];
|
||
|
||
options.options.emplace_back(HelpOptionDetails{s, l, stringDesc,
|
||
value->has_default(), value->get_default_value(),
|
||
value->has_implicit(), value->get_implicit_value(),
|
||
std::move(arg_help),
|
||
value->is_container(),
|
||
value->is_boolean()});
|
||
}
|
||
|
||
inline
|
||
void
|
||
Options::add_one_option
|
||
(
|
||
const std::string& option,
|
||
const std::shared_ptr<OptionDetails>& details
|
||
)
|
||
{
|
||
auto in = m_options->emplace(option, details);
|
||
|
||
if (!in.second)
|
||
{
|
||
throw_or_mimic<option_exists_error>(option);
|
||
}
|
||
}
|
||
|
||
inline
|
||
String
|
||
Options::help_one_group(const std::string& g) const
|
||
{
|
||
using OptionHelp = std::vector<std::pair<String, String>>;
|
||
|
||
auto group = m_help.find(g);
|
||
if (group == m_help.end())
|
||
{
|
||
return "";
|
||
}
|
||
|
||
OptionHelp format;
|
||
|
||
size_t longest = 0;
|
||
|
||
String result;
|
||
|
||
if (!g.empty())
|
||
{
|
||
result += toLocalString(" " + g + " options:\n");
|
||
}
|
||
|
||
for (const auto& o : group->second.options)
|
||
{
|
||
if (m_positional_set.find(o.l) != m_positional_set.end() &&
|
||
!m_show_positional)
|
||
{
|
||
continue;
|
||
}
|
||
|
||
auto s = format_option(o);
|
||
longest = (std::max)(longest, stringLength(s));
|
||
format.push_back(std::make_pair(s, String()));
|
||
}
|
||
|
||
longest = (std::min)(longest, static_cast<size_t>(OPTION_LONGEST));
|
||
|
||
//widest allowed description
|
||
auto allowed = size_t{76} - longest - OPTION_DESC_GAP;
|
||
|
||
auto fiter = format.begin();
|
||
for (const auto& o : group->second.options)
|
||
{
|
||
if (m_positional_set.find(o.l) != m_positional_set.end() &&
|
||
!m_show_positional)
|
||
{
|
||
continue;
|
||
}
|
||
|
||
auto d = format_description(o, longest + OPTION_DESC_GAP, allowed);
|
||
|
||
result += fiter->first;
|
||
if (stringLength(fiter->first) > longest)
|
||
{
|
||
result += '\n';
|
||
result += toLocalString(std::string(longest + OPTION_DESC_GAP, ' '));
|
||
}
|
||
else
|
||
{
|
||
result += toLocalString(std::string(longest + OPTION_DESC_GAP -
|
||
stringLength(fiter->first),
|
||
' '));
|
||
}
|
||
result += d;
|
||
result += '\n';
|
||
|
||
++fiter;
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
inline
|
||
void
|
||
Options::generate_group_help
|
||
(
|
||
String& result,
|
||
const std::vector<std::string>& print_groups
|
||
) const
|
||
{
|
||
for (size_t i = 0; i != print_groups.size(); ++i)
|
||
{
|
||
const String& group_help_text = help_one_group(print_groups[i]);
|
||
if (empty(group_help_text))
|
||
{
|
||
continue;
|
||
}
|
||
result += group_help_text;
|
||
if (i < print_groups.size() - 1)
|
||
{
|
||
result += '\n';
|
||
}
|
||
}
|
||
}
|
||
|
||
inline
|
||
void
|
||
Options::generate_all_groups_help(String& result) const
|
||
{
|
||
std::vector<std::string> all_groups;
|
||
all_groups.reserve(m_help.size());
|
||
|
||
for (const auto& group : m_help)
|
||
{
|
||
all_groups.push_back(group.first);
|
||
}
|
||
|
||
generate_group_help(result, all_groups);
|
||
}
|
||
|
||
inline
|
||
std::string
|
||
Options::help(const std::vector<std::string>& help_groups) const
|
||
{
|
||
String result = m_help_string + "\nUsage:\n " +
|
||
toLocalString(m_program) + " " + toLocalString(m_custom_help);
|
||
|
||
if (!m_positional.empty() && !m_positional_help.empty()) {
|
||
result += " " + toLocalString(m_positional_help);
|
||
}
|
||
|
||
result += "\n\n";
|
||
|
||
if (help_groups.empty())
|
||
{
|
||
generate_all_groups_help(result);
|
||
}
|
||
else
|
||
{
|
||
generate_group_help(result, help_groups);
|
||
}
|
||
|
||
return toUTF8String(result);
|
||
}
|
||
|
||
inline
|
||
std::vector<std::string>
|
||
Options::groups() const
|
||
{
|
||
std::vector<std::string> g;
|
||
|
||
std::transform(
|
||
m_help.begin(),
|
||
m_help.end(),
|
||
std::back_inserter(g),
|
||
[] (const std::map<std::string, HelpGroupDetails>::value_type& pair)
|
||
{
|
||
return pair.first;
|
||
}
|
||
);
|
||
|
||
return g;
|
||
}
|
||
|
||
inline
|
||
const HelpGroupDetails&
|
||
Options::group_help(const std::string& group) const
|
||
{
|
||
return m_help.at(group);
|
||
}
|
||
|
||
} // namespace cxxopts
|
||
|
||
#endif //CXXOPTS_HPP_INCLUDED
|