95c77095e3
This is the simplest implementation of the functionality described in the short description. This patch only deals with the arguments seperated by whitespaces, and process them as is, without any shell processing like expanding wildcards or replacing variables.
2734 lines
58 KiB
C++
2734 lines
58 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 <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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#include <algorithm>
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#if defined(__GNUC__) && !defined(__clang__)
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# if (__GNUC__ * 10 + __GNUC_MINOR__) < 49
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# define CXXOPTS_NO_REGEX true
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# endif
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#endif
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#ifndef CXXOPTS_NO_REGEX
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# include <regex>
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#endif // CXXOPTS_NO_REGEX
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// Nonstandard before C++17, which is coincidentally what we also need for <optional>
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#ifdef __has_include
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# if __has_include(<optional>)
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# include <optional>
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# ifdef __cpp_lib_optional
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# define CXXOPTS_HAS_OPTIONAL
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# endif
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# endif
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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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#if (__GNUC__ < 10 || (__GNUC__ == 10 && __GNUC_MINOR__ < 1)) && __GNUC__ >= 6
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#define CXXOPTS_NULL_DEREF_IGNORE
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#endif
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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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using String = icu::UnicodeString;
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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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#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 push
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#pragma GCC diagnostic ignored "-Wnon-virtual-dtor"
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#pragma GCC diagnostic ignored "-Weffc++"
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// This will be ignored under other compilers like LLVM clang.
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#endif
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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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#if defined(__GNUC__)
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#pragma GCC diagnostic pop
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#endif
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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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using String = std::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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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 push
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#pragma GCC diagnostic ignored "-Wnon-virtual-dtor"
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#pragma GCC diagnostic ignored "-Weffc++"
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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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private:
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std::string m_message;
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};
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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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{
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}
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};
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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")
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{
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}
|
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};
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|
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class invalid_option_format_error : public OptionSpecException
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{
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public:
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explicit invalid_option_format_error(const std::string& format)
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: OptionSpecException("Invalid option format " + LQUOTE + format + RQUOTE)
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{
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}
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};
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class option_syntax_exception : public OptionParseException {
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public:
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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")
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{
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}
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};
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class option_not_exists_exception : public OptionParseException
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{
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public:
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explicit option_not_exists_exception(const std::string& option)
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: OptionParseException("Option " + LQUOTE + option + RQUOTE + " does not exist")
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{
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}
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};
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|
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class missing_argument_exception : public OptionParseException
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{
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public:
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explicit missing_argument_exception(const std::string& option)
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: OptionParseException(
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"Option " + LQUOTE + option + RQUOTE + " is missing an argument"
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)
|
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{
|
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}
|
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};
|
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|
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class option_requires_argument_exception : public OptionParseException
|
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{
|
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public:
|
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explicit option_requires_argument_exception(const std::string& option)
|
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: OptionParseException(
|
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"Option " + LQUOTE + option + RQUOTE + " requires an argument"
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)
|
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{
|
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}
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};
|
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|
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class option_not_has_argument_exception : public OptionParseException
|
||
{
|
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public:
|
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option_not_has_argument_exception
|
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(
|
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const std::string& option,
|
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const std::string& arg
|
||
)
|
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: OptionParseException(
|
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"Option " + LQUOTE + option + RQUOTE +
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" does not take an argument, but argument " +
|
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LQUOTE + arg + RQUOTE + " given"
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)
|
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{
|
||
}
|
||
};
|
||
|
||
class option_not_present_exception : public OptionParseException
|
||
{
|
||
public:
|
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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(
|
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!option.empty() ?
|
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("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 parser_tool
|
||
{
|
||
struct IntegerDesc
|
||
{
|
||
std::string negative = "";
|
||
std::string base = "";
|
||
std::string value = "";
|
||
};
|
||
struct ArguDesc {
|
||
std::string arg_name = "";
|
||
bool grouping = false;
|
||
bool set_value = false;
|
||
std::string value = "";
|
||
};
|
||
#ifdef CXXOPTS_NO_REGEX
|
||
inline IntegerDesc SplitInteger(const std::string &text)
|
||
{
|
||
if (text.empty())
|
||
{
|
||
throw_or_mimic<argument_incorrect_type>(text);
|
||
}
|
||
IntegerDesc desc;
|
||
const char *pdata = text.c_str();
|
||
if (*pdata == '-')
|
||
{
|
||
pdata += 1;
|
||
desc.negative = "-";
|
||
}
|
||
if (strncmp(pdata, "0x", 2) == 0)
|
||
{
|
||
pdata += 2;
|
||
desc.base = "0x";
|
||
}
|
||
if (*pdata != '\0')
|
||
{
|
||
desc.value = std::string(pdata);
|
||
}
|
||
else
|
||
{
|
||
throw_or_mimic<argument_incorrect_type>(text);
|
||
}
|
||
return desc;
|
||
}
|
||
|
||
inline bool IsTrueText(const std::string &text)
|
||
{
|
||
const char *pdata = text.c_str();
|
||
if (*pdata == 't' || *pdata == 'T')
|
||
{
|
||
pdata += 1;
|
||
if (strncmp(pdata, "rue\0", 4) == 0)
|
||
{
|
||
return true;
|
||
}
|
||
}
|
||
else if (strncmp(pdata, "1\0", 2) == 0)
|
||
{
|
||
return true;
|
||
}
|
||
return false;
|
||
}
|
||
|
||
inline bool IsFalseText(const std::string &text)
|
||
{
|
||
const char *pdata = text.c_str();
|
||
if (*pdata == 'f' || *pdata == 'F')
|
||
{
|
||
pdata += 1;
|
||
if (strncmp(pdata, "alse\0", 5) == 0)
|
||
{
|
||
return true;
|
||
}
|
||
}
|
||
else if (strncmp(pdata, "0\0", 2) == 0)
|
||
{
|
||
return true;
|
||
}
|
||
return false;
|
||
}
|
||
|
||
inline std::pair<std::string, std::string> SplitSwitchDef(const std::string &text)
|
||
{
|
||
std::string short_sw, long_sw;
|
||
const char *pdata = text.c_str();
|
||
if (isalnum(*pdata) && *(pdata + 1) == ',') {
|
||
short_sw = std::string(1, *pdata);
|
||
pdata += 2;
|
||
}
|
||
while (*pdata == ' ') { pdata += 1; }
|
||
if (isalnum(*pdata)) {
|
||
const char *store = pdata;
|
||
pdata += 1;
|
||
while (isalnum(*pdata) || *pdata == '-' || *pdata == '_') {
|
||
pdata += 1;
|
||
}
|
||
if (*pdata == '\0') {
|
||
long_sw = std::string(store, pdata - store);
|
||
} else {
|
||
throw_or_mimic<invalid_option_format_error>(text);
|
||
}
|
||
}
|
||
return std::pair<std::string, std::string>(short_sw, long_sw);
|
||
}
|
||
|
||
inline ArguDesc ParseArgument(const char *arg, bool &matched)
|
||
{
|
||
ArguDesc argu_desc;
|
||
const char *pdata = arg;
|
||
matched = false;
|
||
if (strncmp(pdata, "--", 2) == 0)
|
||
{
|
||
pdata += 2;
|
||
if (isalnum(*pdata))
|
||
{
|
||
argu_desc.arg_name.push_back(*pdata);
|
||
pdata += 1;
|
||
while (isalnum(*pdata) || *pdata == '-' || *pdata == '_')
|
||
{
|
||
argu_desc.arg_name.push_back(*pdata);
|
||
pdata += 1;
|
||
}
|
||
if (argu_desc.arg_name.length() > 1)
|
||
{
|
||
if (*pdata == '=')
|
||
{
|
||
argu_desc.set_value = true;
|
||
pdata += 1;
|
||
if (*pdata != '\0')
|
||
{
|
||
argu_desc.value = std::string(pdata);
|
||
}
|
||
matched = true;
|
||
}
|
||
else if (*pdata == '\0')
|
||
{
|
||
matched = true;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
else if (strncmp(pdata, "-", 1) == 0)
|
||
{
|
||
pdata += 1;
|
||
argu_desc.grouping = true;
|
||
while (isalnum(*pdata))
|
||
{
|
||
argu_desc.arg_name.push_back(*pdata);
|
||
pdata += 1;
|
||
}
|
||
matched = !argu_desc.arg_name.empty() && *pdata == '\0';
|
||
}
|
||
return argu_desc;
|
||
}
|
||
|
||
#else // CXXOPTS_NO_REGEX
|
||
|
||
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");
|
||
|
||
std::basic_regex<char> option_matcher
|
||
("--([[:alnum:]][-_[:alnum:]]+)(=(.*))?|-([[:alnum:]]+)");
|
||
std::basic_regex<char> option_specifier
|
||
("(([[:alnum:]]),)?[ ]*([[:alnum:]][-_[:alnum:]]*)?");
|
||
|
||
} // namespace
|
||
|
||
inline IntegerDesc SplitInteger(const std::string &text)
|
||
{
|
||
std::smatch match;
|
||
std::regex_match(text, match, integer_pattern);
|
||
|
||
if (match.length() == 0)
|
||
{
|
||
throw_or_mimic<argument_incorrect_type>(text);
|
||
}
|
||
|
||
IntegerDesc desc;
|
||
desc.negative = match[1];
|
||
desc.base = match[2];
|
||
desc.value = match[3];
|
||
|
||
if (match.length(4) > 0)
|
||
{
|
||
desc.base = match[5];
|
||
desc.value = "0";
|
||
return desc;
|
||
}
|
||
|
||
return desc;
|
||
}
|
||
|
||
inline bool IsTrueText(const std::string &text)
|
||
{
|
||
std::smatch result;
|
||
std::regex_match(text, result, truthy_pattern);
|
||
return !result.empty();
|
||
}
|
||
|
||
inline bool IsFalseText(const std::string &text)
|
||
{
|
||
std::smatch result;
|
||
std::regex_match(text, result, falsy_pattern);
|
||
return !result.empty();
|
||
}
|
||
|
||
inline std::pair<std::string, std::string> SplitSwitchDef(const std::string &text)
|
||
{
|
||
std::match_results<const char*> result;
|
||
std::regex_match(text.c_str(), result, option_specifier);
|
||
if (result.empty())
|
||
{
|
||
throw_or_mimic<invalid_option_format_error>(text);
|
||
}
|
||
|
||
const std::string& short_sw = result[2];
|
||
const std::string& long_sw = result[3];
|
||
|
||
return std::pair<std::string, std::string>(short_sw, long_sw);
|
||
}
|
||
|
||
inline ArguDesc ParseArgument(const char *arg, bool &matched)
|
||
{
|
||
std::match_results<const char*> result;
|
||
std::regex_match(arg, result, option_matcher);
|
||
matched = !result.empty();
|
||
|
||
ArguDesc argu_desc;
|
||
if (matched) {
|
||
argu_desc.arg_name = result[1].str();
|
||
argu_desc.set_value = result[2].length() > 0;
|
||
argu_desc.value = result[3].str();
|
||
if (result[4].length() > 0)
|
||
{
|
||
argu_desc.grouping = true;
|
||
argu_desc.arg_name = result[4].str();
|
||
}
|
||
}
|
||
|
||
return argu_desc;
|
||
}
|
||
|
||
#endif // CXXOPTS_NO_REGEX
|
||
#undef CXXOPTS_NO_REGEX
|
||
}
|
||
|
||
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&) const {}
|
||
};
|
||
|
||
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)
|
||
{
|
||
parser_tool::IntegerDesc int_desc = parser_tool::SplitInteger(text);
|
||
|
||
using US = typename std::make_unsigned<T>::type;
|
||
constexpr bool is_signed = std::numeric_limits<T>::is_signed;
|
||
|
||
const bool negative = int_desc.negative.length() > 0;
|
||
const uint8_t base = int_desc.base.length() > 0 ? 16 : 10;
|
||
const std::string & value_match = int_desc.value;
|
||
|
||
US result = 0;
|
||
|
||
for (char ch : value_match)
|
||
{
|
||
US digit = 0;
|
||
|
||
if (ch >= '0' && ch <= '9')
|
||
{
|
||
digit = static_cast<US>(ch - '0');
|
||
}
|
||
else if (base == 16 && ch >= 'a' && ch <= 'f')
|
||
{
|
||
digit = static_cast<US>(ch - 'a' + 10);
|
||
}
|
||
else if (base == 16 && ch >= 'A' && ch <= 'F')
|
||
{
|
||
digit = static_cast<US>(ch - '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);
|
||
}
|
||
}
|
||
|
||
template <typename T,
|
||
typename std::enable_if<std::is_integral<T>::value>::type* = nullptr
|
||
>
|
||
void parse_value(const std::string& text, T& value)
|
||
{
|
||
integer_parser(text, value);
|
||
}
|
||
|
||
inline
|
||
void
|
||
parse_value(const std::string& text, bool& value)
|
||
{
|
||
if (parser_tool::IsTrueText(text))
|
||
{
|
||
value = true;
|
||
return;
|
||
}
|
||
|
||
if (parser_tool::IsFalseText(text))
|
||
{
|
||
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,
|
||
typename std::enable_if<!std::is_integral<T>::value>::type* = nullptr
|
||
>
|
||
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)
|
||
{
|
||
if (text.empty()) {
|
||
T v;
|
||
parse_value(text, v);
|
||
value.emplace_back(std::move(v));
|
||
return;
|
||
}
|
||
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 override
|
||
{
|
||
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_value(rhs.m_value->clone())
|
||
, m_count(rhs.m_count)
|
||
{
|
||
}
|
||
|
||
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();
|
||
}
|
||
|
||
void
|
||
parse_no_value(const std::shared_ptr<const OptionDetails>& details)
|
||
{
|
||
m_long_name = &details->long_name();
|
||
}
|
||
|
||
#if defined(CXXOPTS_NULL_DEREF_IGNORE)
|
||
#pragma GCC diagnostic push
|
||
#pragma GCC diagnostic ignored "-Wnull-dereference"
|
||
#endif
|
||
|
||
CXXOPTS_NODISCARD
|
||
size_t
|
||
count() const noexcept
|
||
{
|
||
return m_count;
|
||
}
|
||
|
||
#if defined(CXXOPTS_NULL_DEREF_IGNORE)
|
||
#pragma GCC diagnostic pop
|
||
#endif
|
||
|
||
// 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:
|
||
class Iterator
|
||
{
|
||
public:
|
||
using iterator_category = std::forward_iterator_tag;
|
||
using value_type = KeyValue;
|
||
using difference_type = void;
|
||
using pointer = const KeyValue*;
|
||
using reference = const KeyValue&;
|
||
|
||
Iterator() = default;
|
||
Iterator(const Iterator&) = default;
|
||
|
||
Iterator(const ParseResult *pr, bool end=false)
|
||
: m_pr(pr)
|
||
, m_iter(end? pr->m_defaults.end(): pr->m_sequential.begin())
|
||
{
|
||
}
|
||
|
||
Iterator& operator++()
|
||
{
|
||
++m_iter;
|
||
if(m_iter == m_pr->m_sequential.end())
|
||
{
|
||
m_iter = m_pr->m_defaults.begin();
|
||
return *this;
|
||
}
|
||
return *this;
|
||
}
|
||
|
||
Iterator operator++(int)
|
||
{
|
||
Iterator retval = *this;
|
||
++(*this);
|
||
return retval;
|
||
}
|
||
|
||
bool operator==(const Iterator& other) const
|
||
{
|
||
return m_iter == other.m_iter;
|
||
}
|
||
|
||
bool operator!=(const Iterator& other) const
|
||
{
|
||
return !(*this == other);
|
||
}
|
||
|
||
const KeyValue& operator*()
|
||
{
|
||
return *m_iter;
|
||
}
|
||
|
||
const KeyValue* operator->()
|
||
{
|
||
return m_iter.operator->();
|
||
}
|
||
|
||
private:
|
||
const ParseResult* m_pr;
|
||
std::vector<KeyValue>::const_iterator m_iter;
|
||
};
|
||
|
||
ParseResult() = default;
|
||
ParseResult(const ParseResult&) = default;
|
||
|
||
ParseResult(NameHashMap&& keys, ParsedHashMap&& values, std::vector<KeyValue> sequential,
|
||
std::vector<KeyValue> default_opts, std::vector<std::string>&& unmatched_args)
|
||
: m_keys(std::move(keys))
|
||
, m_values(std::move(values))
|
||
, m_sequential(std::move(sequential))
|
||
, m_defaults(std::move(default_opts))
|
||
, m_unmatched(std::move(unmatched_args))
|
||
{
|
||
}
|
||
|
||
ParseResult& operator=(ParseResult&&) = default;
|
||
ParseResult& operator=(const ParseResult&) = default;
|
||
|
||
Iterator
|
||
begin() const
|
||
{
|
||
return Iterator(this);
|
||
}
|
||
|
||
Iterator
|
||
end() const
|
||
{
|
||
return Iterator(this, true);
|
||
}
|
||
|
||
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;
|
||
}
|
||
|
||
const std::vector<KeyValue>&
|
||
defaults() const
|
||
{
|
||
return m_defaults;
|
||
}
|
||
|
||
const std::string
|
||
arguments_string() const
|
||
{
|
||
std::string result;
|
||
for(const auto& kv: m_sequential)
|
||
{
|
||
result += kv.key() + " = " + kv.value() + "\n";
|
||
}
|
||
for(const auto& kv: m_defaults)
|
||
{
|
||
result += kv.key() + " = " + kv.value() + " " + "(default)" + "\n";
|
||
}
|
||
return result;
|
||
}
|
||
|
||
private:
|
||
NameHashMap m_keys{};
|
||
ParsedHashMap m_values{};
|
||
std::vector<KeyValue> m_sequential{};
|
||
std::vector<KeyValue> m_defaults{};
|
||
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);
|
||
|
||
void
|
||
parse_no_value(const std::shared_ptr<OptionDetails>& details);
|
||
|
||
private:
|
||
|
||
void finalise_aliases();
|
||
|
||
const OptionMap& m_options;
|
||
const PositionalList& m_positional;
|
||
|
||
std::vector<KeyValue> m_sequential{};
|
||
std::vector<KeyValue> m_defaults{};
|
||
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_width(76)
|
||
, m_tab_expansion(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;
|
||
}
|
||
|
||
Options&
|
||
set_width(size_t width)
|
||
{
|
||
m_width = width;
|
||
return *this;
|
||
}
|
||
|
||
Options&
|
||
set_tab_expansion(bool expansion=true)
|
||
{
|
||
m_tab_expansion = expansion;
|
||
return *this;
|
||
}
|
||
|
||
ParseResult
|
||
parse(int argc, const char* const* argv);
|
||
|
||
ParseResult
|
||
parse(std::string argv_str);
|
||
|
||
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;
|
||
|
||
const std::string& program() const
|
||
{
|
||
return m_program;
|
||
}
|
||
|
||
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;
|
||
size_t m_width;
|
||
bool m_tab_expansion;
|
||
|
||
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{};
|
||
};
|
||
|
||
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 size_t OPTION_LONGEST = 30;
|
||
constexpr size_t OPTION_DESC_GAP = 2;
|
||
|
||
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 allowed,
|
||
bool tab_expansion
|
||
)
|
||
{
|
||
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;
|
||
|
||
if (tab_expansion)
|
||
{
|
||
String desc2;
|
||
auto size = size_t{ 0 };
|
||
for (auto c = std::begin(desc); c != std::end(desc); ++c)
|
||
{
|
||
if (*c == '\n')
|
||
{
|
||
desc2 += *c;
|
||
size = 0;
|
||
}
|
||
else if (*c == '\t')
|
||
{
|
||
auto skip = 8 - size % 8;
|
||
stringAppend(desc2, skip, ' ');
|
||
size += skip;
|
||
}
|
||
else
|
||
{
|
||
desc2 += *c;
|
||
++size;
|
||
}
|
||
}
|
||
desc = desc2;
|
||
}
|
||
|
||
desc += " ";
|
||
|
||
auto current = std::begin(desc);
|
||
auto previous = current;
|
||
auto startLine = current;
|
||
auto lastSpace = current;
|
||
|
||
auto size = size_t{};
|
||
|
||
bool appendNewLine;
|
||
bool onlyWhiteSpace = true;
|
||
|
||
while (current != std::end(desc))
|
||
{
|
||
appendNewLine = false;
|
||
|
||
if (std::isblank(*previous))
|
||
{
|
||
lastSpace = current;
|
||
}
|
||
|
||
if (!std::isblank(*current))
|
||
{
|
||
onlyWhiteSpace = false;
|
||
}
|
||
|
||
while (*current == '\n')
|
||
{
|
||
previous = current;
|
||
++current;
|
||
appendNewLine = true;
|
||
}
|
||
|
||
if (!appendNewLine && size >= allowed)
|
||
{
|
||
if (lastSpace != startLine)
|
||
{
|
||
current = lastSpace;
|
||
previous = current;
|
||
}
|
||
appendNewLine = true;
|
||
}
|
||
|
||
if (appendNewLine)
|
||
{
|
||
stringAppend(result, startLine, current);
|
||
startLine = current;
|
||
lastSpace = current;
|
||
|
||
if (*previous != '\n')
|
||
{
|
||
stringAppend(result, "\n");
|
||
}
|
||
|
||
stringAppend(result, start, ' ');
|
||
|
||
if (*previous != '\n')
|
||
{
|
||
stringAppend(result, lastSpace, current);
|
||
}
|
||
|
||
onlyWhiteSpace = true;
|
||
size = 0;
|
||
}
|
||
|
||
previous = current;
|
||
++current;
|
||
++size;
|
||
}
|
||
|
||
//append whatever is left but ignore whitespace
|
||
if (!onlyWhiteSpace)
|
||
{
|
||
stringAppend(result, startLine, previous);
|
||
}
|
||
|
||
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::string short_sw, long_sw;
|
||
std::tie(short_sw, long_sw) = values::parser_tool::SplitSwitchDef(opts);
|
||
|
||
if (!short_sw.length() && !long_sw.length())
|
||
{
|
||
throw_or_mimic<invalid_option_format_error>(opts);
|
||
}
|
||
else if (long_sw.length() == 1 && short_sw.length())
|
||
{
|
||
throw_or_mimic<invalid_option_format_error>(opts);
|
||
}
|
||
|
||
auto option_names = []
|
||
(
|
||
const std::string &short_,
|
||
const std::string &long_
|
||
)
|
||
{
|
||
if (long_.length() == 1)
|
||
{
|
||
return std::make_tuple(long_, short_);
|
||
}
|
||
return std::make_tuple(short_, long_);
|
||
}(short_sw, long_sw);
|
||
|
||
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);
|
||
m_defaults.emplace_back(details->long_name(), details->value().get_default_value());
|
||
}
|
||
|
||
inline
|
||
void
|
||
OptionParser::parse_no_value(const std::shared_ptr<OptionDetails>& details)
|
||
{
|
||
auto& store = m_parsed[details->hash()];
|
||
store.parse_no_value(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())
|
||
{
|
||
if (!iter->second->value().is_container())
|
||
{
|
||
auto& result = m_parsed[iter->second->hash()];
|
||
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
|
||
Options::parse(std::string argv_str)
|
||
{
|
||
std::vector<std::string> tokens;
|
||
std::string token;
|
||
std::istringstream iss(argv_str);
|
||
while (std::getline(iss, token, ' '))
|
||
{
|
||
tokens.push_back(token);
|
||
}
|
||
|
||
const char** argv = new const char*[tokens.size()];
|
||
for (int i = 0; i < tokens.size(); ++i) {
|
||
argv[i] = tokens[i].c_str();
|
||
}
|
||
|
||
OptionParser parser(*m_options, m_positional, m_allow_unrecognised);
|
||
|
||
auto parse_result = parser.parse(tokens.size(), argv);
|
||
delete argv;
|
||
return parse_result;
|
||
}
|
||
|
||
inline ParseResult
|
||
OptionParser::parse(int argc, const char* const* argv)
|
||
{
|
||
int current = 1;
|
||
bool consume_remaining = false;
|
||
auto next_positional = m_positional.begin();
|
||
|
||
std::vector<std::string> unmatched;
|
||
|
||
while (current != argc)
|
||
{
|
||
if (strcmp(argv[current], "--") == 0)
|
||
{
|
||
consume_remaining = true;
|
||
++current;
|
||
break;
|
||
}
|
||
bool matched = false;
|
||
values::parser_tool::ArguDesc argu_desc =
|
||
values::parser_tool::ParseArgument(argv[current], matched);
|
||
|
||
if (!matched)
|
||
{
|
||
//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.emplace_back(argv[current]);
|
||
}
|
||
//if we return from here then it was parsed successfully, so continue
|
||
}
|
||
else
|
||
{
|
||
//short or long option?
|
||
if (argu_desc.grouping)
|
||
{
|
||
const std::string& s = argu_desc.arg_name;
|
||
|
||
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)
|
||
{
|
||
unmatched.push_back(std::string("-") + s[i]);
|
||
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 if (i + 1 < s.size())
|
||
{
|
||
std::string arg_value = s.substr(i + 1);
|
||
parse_option(value, name, arg_value);
|
||
break;
|
||
}
|
||
else
|
||
{
|
||
//error
|
||
throw_or_mimic<option_requires_argument_exception>(name);
|
||
}
|
||
}
|
||
}
|
||
else if (argu_desc.arg_name.length() != 0)
|
||
{
|
||
const std::string& name = argu_desc.arg_name;
|
||
|
||
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.emplace_back(argv[current]);
|
||
++current;
|
||
continue;
|
||
}
|
||
//error
|
||
throw_or_mimic<option_not_exists_exception>(name);
|
||
}
|
||
|
||
auto opt = iter->second;
|
||
|
||
//equals provided for long option?
|
||
if (argu_desc.set_value)
|
||
{
|
||
//parse the option given
|
||
|
||
parse_option(opt, name, argu_desc.value);
|
||
}
|
||
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()) {
|
||
if (!store.count() && !store.has_default()) {
|
||
parse_default(detail);
|
||
}
|
||
}
|
||
else {
|
||
parse_no_value(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.emplace_back(argv[current]);
|
||
++current;
|
||
}
|
||
}
|
||
|
||
finalise_aliases();
|
||
|
||
ParseResult parsed(std::move(m_keys), std::move(m_parsed), std::move(m_sequential), std::move(m_defaults), 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);
|
||
}
|
||
|
||
//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, OPTION_LONGEST);
|
||
|
||
//widest allowed description -- min 10 chars for helptext/line
|
||
size_t allowed = 10;
|
||
if (m_width > allowed + longest + OPTION_DESC_GAP)
|
||
{
|
||
allowed = m_width - 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, m_tab_expansion);
|
||
|
||
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;
|
||
|
||
std::transform(
|
||
m_help.begin(),
|
||
m_help.end(),
|
||
std::back_inserter(all_groups),
|
||
[] (const std::map<std::string, HelpGroupDetails>::value_type& group)
|
||
{
|
||
return 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
|