1883 lines
37 KiB
C++
1883 lines
37 KiB
C++
/*
|
||
|
||
Copyright (c) 2014, 2015, 2016, 2017 Jarryd Beck
|
||
|
||
Permission is hereby granted, free of charge, to any person obtaining a copy
|
||
of this software and associated documentation files (the "Software"), to deal
|
||
in the Software without restriction, including without limitation the rights
|
||
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||
copies of the Software, and to permit persons to whom the Software is
|
||
furnished to do so, subject to the following conditions:
|
||
|
||
The above copyright notice and this permission notice shall be included in
|
||
all copies or substantial portions of the Software.
|
||
|
||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||
THE SOFTWARE.
|
||
|
||
*/
|
||
|
||
#ifndef CXXOPTS_HPP_INCLUDED
|
||
#define CXXOPTS_HPP_INCLUDED
|
||
|
||
#define CXXOPTS_VERSION 2.0.0
|
||
|
||
#include <cstring>
|
||
#include <cctype>
|
||
#include <exception>
|
||
#include <iostream>
|
||
#include <map>
|
||
#include <memory>
|
||
#include <regex>
|
||
#include <sstream>
|
||
#include <string>
|
||
#include <unordered_map>
|
||
#include <unordered_set>
|
||
#include <vector>
|
||
|
||
//when we ask cxxopts to use Unicode, help strings are processed using ICU,
|
||
//which results in the correct lengths being computed for strings when they
|
||
//are formatted for the help output
|
||
//it is necessary to make sure that <unicode/unistr.h> can be found by the
|
||
//compiler, and that icu-uc is linked in to the binary.
|
||
|
||
#ifdef CXXOPTS_USE_UNICODE
|
||
#include <unicode/unistr.h>
|
||
|
||
namespace cxxopts
|
||
{
|
||
typedef icu::UnicodeString String;
|
||
|
||
inline
|
||
String
|
||
toLocalString(std::string s)
|
||
{
|
||
return icu::UnicodeString::fromUTF8(std::move(s));
|
||
}
|
||
|
||
class UnicodeStringIterator : public
|
||
std::iterator<std::forward_iterator_tag, int32_t>
|
||
{
|
||
public:
|
||
|
||
UnicodeStringIterator(const icu::UnicodeString* string, int32_t pos)
|
||
: s(string)
|
||
, i(pos)
|
||
{
|
||
}
|
||
|
||
value_type
|
||
operator*() const
|
||
{
|
||
return s->char32At(i);
|
||
}
|
||
|
||
bool
|
||
operator==(const UnicodeStringIterator& rhs) const
|
||
{
|
||
return s == rhs.s && i == rhs.i;
|
||
}
|
||
|
||
bool
|
||
operator!=(const UnicodeStringIterator& rhs) const
|
||
{
|
||
return !(*this == rhs);
|
||
}
|
||
|
||
UnicodeStringIterator&
|
||
operator++()
|
||
{
|
||
++i;
|
||
return *this;
|
||
}
|
||
|
||
UnicodeStringIterator
|
||
operator+(int32_t v)
|
||
{
|
||
return UnicodeStringIterator(s, i + v);
|
||
}
|
||
|
||
private:
|
||
const icu::UnicodeString* s;
|
||
int32_t i;
|
||
};
|
||
|
||
inline
|
||
String&
|
||
stringAppend(String&s, String a)
|
||
{
|
||
return s.append(std::move(a));
|
||
}
|
||
|
||
inline
|
||
String&
|
||
stringAppend(String& s, int n, UChar32 c)
|
||
{
|
||
for (int i = 0; i != n; ++i)
|
||
{
|
||
s.append(c);
|
||
}
|
||
|
||
return s;
|
||
}
|
||
|
||
template <typename Iterator>
|
||
String&
|
||
stringAppend(String& s, Iterator begin, Iterator end)
|
||
{
|
||
while (begin != end)
|
||
{
|
||
s.append(*begin);
|
||
++begin;
|
||
}
|
||
|
||
return s;
|
||
}
|
||
|
||
inline
|
||
size_t
|
||
stringLength(const String& s)
|
||
{
|
||
return s.length();
|
||
}
|
||
|
||
inline
|
||
std::string
|
||
toUTF8String(const String& s)
|
||
{
|
||
std::string result;
|
||
s.toUTF8String(result);
|
||
|
||
return result;
|
||
}
|
||
|
||
inline
|
||
bool
|
||
empty(const String& s)
|
||
{
|
||
return s.isEmpty();
|
||
}
|
||
}
|
||
|
||
namespace std
|
||
{
|
||
inline
|
||
cxxopts::UnicodeStringIterator
|
||
begin(const icu::UnicodeString& s)
|
||
{
|
||
return cxxopts::UnicodeStringIterator(&s, 0);
|
||
}
|
||
|
||
inline
|
||
cxxopts::UnicodeStringIterator
|
||
end(const icu::UnicodeString& s)
|
||
{
|
||
return cxxopts::UnicodeStringIterator(&s, s.length());
|
||
}
|
||
}
|
||
|
||
//ifdef CXXOPTS_USE_UNICODE
|
||
#else
|
||
|
||
namespace cxxopts
|
||
{
|
||
typedef std::string String;
|
||
|
||
template <typename T>
|
||
T
|
||
toLocalString(T&& t)
|
||
{
|
||
return t;
|
||
}
|
||
|
||
inline
|
||
size_t
|
||
stringLength(const String& s)
|
||
{
|
||
return s.length();
|
||
}
|
||
|
||
inline
|
||
String&
|
||
stringAppend(String&s, String a)
|
||
{
|
||
return s.append(std::move(a));
|
||
}
|
||
|
||
inline
|
||
String&
|
||
stringAppend(String& s, size_t n, char c)
|
||
{
|
||
return s.append(n, c);
|
||
}
|
||
|
||
template <typename Iterator>
|
||
String&
|
||
stringAppend(String& s, Iterator begin, Iterator end)
|
||
{
|
||
return s.append(begin, end);
|
||
}
|
||
|
||
template <typename T>
|
||
std::string
|
||
toUTF8String(T&& t)
|
||
{
|
||
return std::forward<T>(t);
|
||
}
|
||
|
||
inline
|
||
bool
|
||
empty(const std::string& s)
|
||
{
|
||
return s.empty();
|
||
}
|
||
}
|
||
|
||
//ifdef CXXOPTS_USE_UNICODE
|
||
#endif
|
||
|
||
namespace cxxopts
|
||
{
|
||
namespace
|
||
{
|
||
#ifdef _WIN32
|
||
const std::string LQUOTE("\'");
|
||
const std::string RQUOTE("\'");
|
||
#else
|
||
const std::string LQUOTE("‘");
|
||
const std::string RQUOTE("’");
|
||
#endif
|
||
}
|
||
|
||
class Value : public std::enable_shared_from_this<Value>
|
||
{
|
||
public:
|
||
|
||
virtual
|
||
std::shared_ptr<Value>
|
||
clone() const = 0;
|
||
|
||
virtual void
|
||
parse(const std::string& text) const = 0;
|
||
|
||
virtual void
|
||
parse() const = 0;
|
||
|
||
virtual bool
|
||
has_arg() const = 0;
|
||
|
||
virtual bool
|
||
has_default() const = 0;
|
||
|
||
virtual bool
|
||
is_container() const = 0;
|
||
|
||
virtual bool
|
||
has_implicit() const = 0;
|
||
|
||
virtual std::string
|
||
get_default_value() const = 0;
|
||
|
||
virtual std::string
|
||
get_implicit_value() const = 0;
|
||
|
||
virtual std::shared_ptr<Value>
|
||
default_value(const std::string& value) = 0;
|
||
|
||
virtual std::shared_ptr<Value>
|
||
implicit_value(const std::string& value) = 0;
|
||
};
|
||
|
||
class OptionException : public std::exception
|
||
{
|
||
public:
|
||
OptionException(const std::string& message)
|
||
: m_message(message)
|
||
{
|
||
}
|
||
|
||
virtual const char*
|
||
what() const noexcept
|
||
{
|
||
return m_message.c_str();
|
||
}
|
||
|
||
private:
|
||
std::string m_message;
|
||
};
|
||
|
||
class OptionSpecException : public OptionException
|
||
{
|
||
public:
|
||
|
||
OptionSpecException(const std::string& message)
|
||
: OptionException(message)
|
||
{
|
||
}
|
||
};
|
||
|
||
class OptionParseException : public OptionException
|
||
{
|
||
public:
|
||
OptionParseException(const std::string& message)
|
||
: OptionException(message)
|
||
{
|
||
}
|
||
};
|
||
|
||
class option_exists_error : public OptionSpecException
|
||
{
|
||
public:
|
||
option_exists_error(const std::string& option)
|
||
: OptionSpecException(u8"Option " + LQUOTE + option + RQUOTE + u8" already exists")
|
||
{
|
||
}
|
||
};
|
||
|
||
class invalid_option_format_error : public OptionSpecException
|
||
{
|
||
public:
|
||
invalid_option_format_error(const std::string& format)
|
||
: OptionSpecException(u8"Invalid option format " + LQUOTE + format + RQUOTE)
|
||
{
|
||
}
|
||
};
|
||
|
||
class option_not_exists_exception : public OptionParseException
|
||
{
|
||
public:
|
||
option_not_exists_exception(const std::string& option)
|
||
: OptionParseException(u8"Option " + LQUOTE + option + RQUOTE + u8" does not exist")
|
||
{
|
||
}
|
||
};
|
||
|
||
class missing_argument_exception : public OptionParseException
|
||
{
|
||
public:
|
||
missing_argument_exception(const std::string& option)
|
||
: OptionParseException(
|
||
u8"Option " + LQUOTE + option + RQUOTE + u8" is missing an argument"
|
||
)
|
||
{
|
||
}
|
||
};
|
||
|
||
class option_requires_argument_exception : public OptionParseException
|
||
{
|
||
public:
|
||
option_requires_argument_exception(const std::string& option)
|
||
: OptionParseException(
|
||
u8"Option " + LQUOTE + option + RQUOTE + u8" 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(
|
||
u8"Option " + LQUOTE + option + RQUOTE +
|
||
u8" does not take an argument, but argument" +
|
||
LQUOTE + arg + RQUOTE + " given"
|
||
)
|
||
{
|
||
}
|
||
};
|
||
|
||
class option_not_present_exception : public OptionParseException
|
||
{
|
||
public:
|
||
option_not_present_exception(const std::string& option)
|
||
: OptionParseException(u8"Option " + LQUOTE + option + RQUOTE + u8" not present")
|
||
{
|
||
}
|
||
};
|
||
|
||
class argument_incorrect_type : public OptionParseException
|
||
{
|
||
public:
|
||
argument_incorrect_type
|
||
(
|
||
const std::string& arg
|
||
)
|
||
: OptionParseException(
|
||
u8"Argument " + LQUOTE + arg + RQUOTE + u8" failed to parse"
|
||
)
|
||
{
|
||
}
|
||
};
|
||
|
||
class option_required_exception : public OptionParseException
|
||
{
|
||
public:
|
||
option_required_exception(const std::string& option)
|
||
: OptionParseException(
|
||
u8"Option " + LQUOTE + option + RQUOTE + u8" is required but not present"
|
||
)
|
||
{
|
||
}
|
||
};
|
||
|
||
namespace values
|
||
{
|
||
namespace
|
||
{
|
||
std::basic_regex<char> integer_pattern
|
||
("(-)?(0x)?([1-9a-zA-Z][0-9a-zA-Z]*)|(0)");
|
||
}
|
||
|
||
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 argument_incorrect_type(text);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (u > static_cast<U>(std::numeric_limits<T>::max()))
|
||
{
|
||
throw 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);
|
||
}
|
||
}
|
||
|
||
template <typename R, typename T>
|
||
R
|
||
checked_negate(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.
|
||
return -static_cast<R>(t);
|
||
}
|
||
|
||
template <typename R, typename T>
|
||
T
|
||
checked_negate(T&&, const std::string& text, std::false_type)
|
||
{
|
||
throw 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 argument_incorrect_type(text);
|
||
}
|
||
|
||
if (match.length(4) > 0)
|
||
{
|
||
value = 0;
|
||
return;
|
||
}
|
||
|
||
using US = typename std::make_unsigned<T>::type;
|
||
|
||
constexpr auto umax = std::numeric_limits<US>::max();
|
||
constexpr bool is_signed = std::numeric_limits<T>::is_signed;
|
||
const bool negative = match.length(1) > 0;
|
||
const auto 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)
|
||
{
|
||
int digit = 0;
|
||
|
||
if (*iter >= '0' && *iter <= '9')
|
||
{
|
||
digit = *iter - '0';
|
||
}
|
||
else if (*iter >= 'a' && *iter <= 'f')
|
||
{
|
||
digit = *iter - 'a' + 10;
|
||
}
|
||
else if (*iter >= 'A' && *iter <= 'F')
|
||
{
|
||
digit = *iter - 'A' + 10;
|
||
}
|
||
|
||
if (umax - digit < result * base)
|
||
{
|
||
throw argument_incorrect_type(text);
|
||
}
|
||
|
||
result = result * base + digit;
|
||
}
|
||
|
||
detail::check_signed_range<T>(negative, result, text);
|
||
|
||
if (negative)
|
||
{
|
||
value = checked_negate<T>(result,
|
||
text,
|
||
std::integral_constant<bool, is_signed>());
|
||
//if (!is_signed)
|
||
//{
|
||
// throw argument_incorrect_type(text);
|
||
//}
|
||
//value = -result;
|
||
}
|
||
else
|
||
{
|
||
value = result;
|
||
}
|
||
}
|
||
|
||
template <typename T>
|
||
void stringstream_parser(const std::string& text, T& value)
|
||
{
|
||
std::stringstream in(text);
|
||
in >> value;
|
||
if (!in) {
|
||
throw 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)
|
||
{
|
||
//TODO recognise on, off, yes, no, enable, disable
|
||
//so that we can write --long=yes explicitly
|
||
value = true;
|
||
}
|
||
|
||
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)
|
||
{
|
||
T v;
|
||
parse_value(text, v);
|
||
value.push_back(v);
|
||
}
|
||
|
||
template <typename T>
|
||
struct value_has_arg
|
||
{
|
||
static constexpr bool value = true;
|
||
};
|
||
|
||
template <>
|
||
struct value_has_arg<bool>
|
||
{
|
||
static constexpr bool value = false;
|
||
};
|
||
|
||
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 standard_value : public Value
|
||
{
|
||
using Self = standard_value<T>;
|
||
|
||
public:
|
||
standard_value()
|
||
: m_result(std::make_shared<T>())
|
||
, m_store(m_result.get())
|
||
{
|
||
}
|
||
|
||
standard_value(T* t)
|
||
: m_store(t)
|
||
{
|
||
}
|
||
|
||
std::shared_ptr<Value>
|
||
clone() const
|
||
{
|
||
std::shared_ptr<Self> copy;
|
||
|
||
if (m_result)
|
||
{
|
||
copy = std::make_shared<Self>();
|
||
}
|
||
else
|
||
{
|
||
copy = std::make_shared<Self>(m_store);
|
||
}
|
||
|
||
copy->m_default = m_default;
|
||
copy->m_implicit = m_implicit;
|
||
copy->m_default_value = m_default_value;
|
||
copy->m_implicit_value = m_implicit_value;
|
||
|
||
return copy;
|
||
}
|
||
|
||
void
|
||
parse(const std::string& text) const
|
||
{
|
||
parse_value(text, *m_store);
|
||
}
|
||
|
||
bool
|
||
is_container() const
|
||
{
|
||
return type_is_container<T>::value;
|
||
}
|
||
|
||
void
|
||
parse() const
|
||
{
|
||
parse_value(m_default_value, *m_store);
|
||
}
|
||
|
||
bool
|
||
has_arg() const
|
||
{
|
||
return value_has_arg<T>::value;
|
||
}
|
||
|
||
bool
|
||
has_default() const
|
||
{
|
||
return m_default;
|
||
}
|
||
|
||
bool
|
||
has_implicit() const
|
||
{
|
||
return m_implicit;
|
||
}
|
||
|
||
std::shared_ptr<Value>
|
||
default_value(const std::string& value)
|
||
{
|
||
m_default = true;
|
||
m_default_value = value;
|
||
return shared_from_this();
|
||
}
|
||
|
||
std::shared_ptr<Value>
|
||
implicit_value(const std::string& value)
|
||
{
|
||
m_implicit = true;
|
||
m_implicit_value = value;
|
||
return shared_from_this();
|
||
}
|
||
|
||
std::string
|
||
get_default_value() const
|
||
{
|
||
return m_default_value;
|
||
}
|
||
|
||
std::string
|
||
get_implicit_value() const
|
||
{
|
||
return m_implicit_value;
|
||
}
|
||
|
||
const T&
|
||
get() const
|
||
{
|
||
if (m_store == nullptr)
|
||
{
|
||
return *m_result;
|
||
}
|
||
else
|
||
{
|
||
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>
|
||
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
|
||
(
|
||
const std::string& short_name,
|
||
const std::string& long_name,
|
||
const String& desc,
|
||
std::shared_ptr<const Value> val
|
||
)
|
||
: m_short(short_name)
|
||
, m_long(long_name)
|
||
, m_desc(desc)
|
||
, m_value(val)
|
||
, m_count(0)
|
||
{
|
||
}
|
||
|
||
OptionDetails(const OptionDetails& rhs)
|
||
: m_desc(rhs.m_desc)
|
||
, m_count(rhs.m_count)
|
||
{
|
||
m_value = rhs.m_value->clone();
|
||
}
|
||
|
||
OptionDetails(OptionDetails&& rhs) = default;
|
||
|
||
const String&
|
||
description() const
|
||
{
|
||
return m_desc;
|
||
}
|
||
|
||
bool
|
||
has_arg() const
|
||
{
|
||
return m_value->has_arg();
|
||
}
|
||
|
||
const Value& value() const {
|
||
return *m_value;
|
||
}
|
||
|
||
std::shared_ptr<Value>
|
||
make_storage() const
|
||
{
|
||
return m_value->clone();
|
||
}
|
||
|
||
const std::string&
|
||
short_name() const
|
||
{
|
||
return m_short;
|
||
}
|
||
|
||
const std::string&
|
||
long_name() const
|
||
{
|
||
return m_long;
|
||
}
|
||
|
||
private:
|
||
std::string m_short;
|
||
std::string m_long;
|
||
String m_desc;
|
||
std::shared_ptr<const Value> m_value;
|
||
int m_count;
|
||
};
|
||
|
||
struct HelpOptionDetails
|
||
{
|
||
std::string s;
|
||
std::string l;
|
||
String desc;
|
||
bool has_arg;
|
||
bool has_default;
|
||
std::string default_value;
|
||
bool has_implicit;
|
||
std::string implicit_value;
|
||
std::string arg_help;
|
||
bool is_container;
|
||
};
|
||
|
||
struct HelpGroupDetails
|
||
{
|
||
std::string name;
|
||
std::string description;
|
||
std::vector<HelpOptionDetails> options;
|
||
};
|
||
|
||
class OptionValue
|
||
{
|
||
public:
|
||
void
|
||
parse
|
||
(
|
||
std::shared_ptr<const OptionDetails> details,
|
||
const std::string& text
|
||
)
|
||
{
|
||
ensure_value(details);
|
||
++m_count;
|
||
m_value->parse(text);
|
||
}
|
||
|
||
void
|
||
parse_default(std::shared_ptr<const OptionDetails> details)
|
||
{
|
||
ensure_value(details);
|
||
m_value->parse();
|
||
m_count++;
|
||
}
|
||
|
||
size_t
|
||
count() const
|
||
{
|
||
return m_count;
|
||
}
|
||
|
||
template <typename T>
|
||
const T&
|
||
as() const
|
||
{
|
||
#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(std::shared_ptr<const OptionDetails> details)
|
||
{
|
||
if (m_value == nullptr)
|
||
{
|
||
m_value = details->make_storage();
|
||
}
|
||
}
|
||
|
||
std::shared_ptr<Value> m_value;
|
||
size_t m_count = 0;
|
||
};
|
||
|
||
class ParseResult
|
||
{
|
||
public:
|
||
|
||
ParseResult(
|
||
const std::unordered_map<std::string, std::shared_ptr<OptionDetails>>&,
|
||
std::vector<std::string>,
|
||
int&, char**&);
|
||
|
||
int
|
||
count(const std::string& o) const
|
||
{
|
||
auto iter = m_options.find(o);
|
||
if (iter == m_options.end())
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
auto riter = m_results.find(iter->second);
|
||
|
||
return riter->second.count();
|
||
}
|
||
|
||
const OptionValue&
|
||
operator[](const std::string& option) const
|
||
{
|
||
auto iter = m_options.find(option);
|
||
|
||
if (iter == m_options.end())
|
||
{
|
||
throw option_not_present_exception(option);
|
||
}
|
||
|
||
auto riter = m_results.find(iter->second);
|
||
|
||
return riter->second;
|
||
}
|
||
|
||
private:
|
||
|
||
OptionValue&
|
||
get_option(std::shared_ptr<OptionDetails>);
|
||
|
||
void
|
||
parse(int& argc, char**& argv);
|
||
|
||
void
|
||
add_to_option(const std::string& option, const std::string& arg);
|
||
|
||
bool
|
||
consume_positional(std::string a);
|
||
|
||
void
|
||
parse_option
|
||
(
|
||
std::shared_ptr<OptionDetails> value,
|
||
const std::string& name,
|
||
const std::string& arg = ""
|
||
);
|
||
|
||
void
|
||
parse_default(std::shared_ptr<OptionDetails> details);
|
||
|
||
void
|
||
checked_parse_arg
|
||
(
|
||
int argc,
|
||
char* argv[],
|
||
int& current,
|
||
std::shared_ptr<OptionDetails> value,
|
||
const std::string& name
|
||
);
|
||
|
||
const std::unordered_map<std::string, std::shared_ptr<OptionDetails>>
|
||
&m_options;
|
||
std::vector<std::string> m_positional;
|
||
std::vector<std::string>::iterator m_next_positional;
|
||
std::unordered_set<std::string> m_positional_set;
|
||
std::unordered_map<std::shared_ptr<OptionDetails>, OptionValue> m_results;
|
||
};
|
||
|
||
class Options
|
||
{
|
||
public:
|
||
|
||
Options(std::string program, std::string help_string = "")
|
||
: m_program(std::move(program))
|
||
, m_help_string(toLocalString(std::move(help_string)))
|
||
, m_positional_help("positional parameters")
|
||
, m_next_positional(m_positional.end())
|
||
{
|
||
}
|
||
|
||
Options&
|
||
positional_help(std::string help_text)
|
||
{
|
||
m_positional_help = std::move(help_text);
|
||
return *this;
|
||
}
|
||
|
||
ParseResult
|
||
parse(int& argc, char**& argv);
|
||
|
||
OptionAdder
|
||
add_options(std::string group = "");
|
||
|
||
void
|
||
add_option
|
||
(
|
||
const std::string& group,
|
||
const std::string& s,
|
||
const std::string& l,
|
||
std::string desc,
|
||
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);
|
||
|
||
std::string
|
||
help(const std::vector<std::string>& groups = {""}) const;
|
||
|
||
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,
|
||
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_positional_help;
|
||
|
||
std::unordered_map<std::string, std::shared_ptr<OptionDetails>> m_options;
|
||
std::vector<std::string> m_positional;
|
||
std::vector<std::string>::iterator m_next_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,
|
||
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
|
||
)
|
||
{
|
||
auto& s = o.s;
|
||
auto& l = o.l;
|
||
|
||
String result = " ";
|
||
|
||
if (s.size() > 0)
|
||
{
|
||
result += "-" + toLocalString(s) + ",";
|
||
}
|
||
else
|
||
{
|
||
result += " ";
|
||
}
|
||
|
||
if (l.size() > 0)
|
||
{
|
||
result += " --" + toLocalString(l);
|
||
}
|
||
|
||
if (o.has_arg)
|
||
{
|
||
auto arg = o.arg_help.size() > 0 ? toLocalString(o.arg_help) : "arg";
|
||
|
||
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)
|
||
{
|
||
desc += toLocalString(" (default: " + o.default_value + ")");
|
||
}
|
||
|
||
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 (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;
|
||
}
|
||
size = 0;
|
||
}
|
||
else
|
||
{
|
||
++size;
|
||
}
|
||
|
||
++current;
|
||
}
|
||
|
||
//append whatever is left
|
||
stringAppend(result, startLine, current);
|
||
|
||
return result;
|
||
}
|
||
}
|
||
|
||
inline
|
||
ParseResult::ParseResult
|
||
(
|
||
const std::unordered_map<std::string, std::shared_ptr<OptionDetails>>& options,
|
||
std::vector<std::string> positional,
|
||
int& argc, char**& argv
|
||
)
|
||
: m_options(options)
|
||
, m_positional(std::move(positional))
|
||
, m_next_positional(m_positional.begin())
|
||
{
|
||
parse(argc, argv);
|
||
}
|
||
|
||
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,
|
||
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 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 invalid_option_format_error(opts);
|
||
} else if (long_match.length() == 1 && short_match.length())
|
||
{
|
||
throw 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());
|
||
}
|
||
else
|
||
{
|
||
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
|
||
ParseResult::parse_default(std::shared_ptr<OptionDetails> details)
|
||
{
|
||
m_results[details].parse_default(details);
|
||
}
|
||
|
||
inline
|
||
void
|
||
ParseResult::parse_option
|
||
(
|
||
std::shared_ptr<OptionDetails> value,
|
||
const std::string& /*name*/,
|
||
const std::string& arg
|
||
)
|
||
{
|
||
auto& result = m_results[value];
|
||
result.parse(value, arg);
|
||
}
|
||
|
||
inline
|
||
void
|
||
ParseResult::checked_parse_arg
|
||
(
|
||
int argc,
|
||
char* argv[],
|
||
int& current,
|
||
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 missing_argument_exception(name);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (argv[current + 1][0] == '-' && value->value().has_implicit())
|
||
{
|
||
parse_option(value, name, value->value().get_implicit_value());
|
||
}
|
||
else
|
||
{
|
||
parse_option(value, name, argv[current + 1]);
|
||
++current;
|
||
}
|
||
}
|
||
}
|
||
|
||
inline
|
||
void
|
||
ParseResult::add_to_option(const std::string& option, const std::string& arg)
|
||
{
|
||
auto iter = m_options.find(option);
|
||
|
||
if (iter == m_options.end())
|
||
{
|
||
throw option_not_exists_exception(option);
|
||
}
|
||
|
||
parse_option(iter->second, option, arg);
|
||
}
|
||
|
||
inline
|
||
bool
|
||
ParseResult::consume_positional(std::string a)
|
||
{
|
||
while (m_next_positional != m_positional.end())
|
||
{
|
||
auto iter = m_options.find(*m_next_positional);
|
||
if (iter != m_options.end())
|
||
{
|
||
auto& result = m_results[iter->second];
|
||
if (!iter->second->value().is_container())
|
||
{
|
||
if (result.count() == 0)
|
||
{
|
||
add_to_option(*m_next_positional, a);
|
||
++m_next_positional;
|
||
return true;
|
||
}
|
||
else
|
||
{
|
||
++m_next_positional;
|
||
continue;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
add_to_option(*m_next_positional, a);
|
||
return true;
|
||
}
|
||
}
|
||
++m_next_positional;
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
inline
|
||
void
|
||
Options::parse_positional(std::string option)
|
||
{
|
||
parse_positional(std::vector<std::string>{option});
|
||
}
|
||
|
||
inline
|
||
void
|
||
Options::parse_positional(std::vector<std::string> options)
|
||
{
|
||
m_positional = std::move(options);
|
||
m_next_positional = m_positional.begin();
|
||
|
||
m_positional_set.insert(m_positional.begin(), m_positional.end());
|
||
}
|
||
|
||
inline
|
||
ParseResult
|
||
Options::parse(int& argc, char**& argv)
|
||
{
|
||
ParseResult result(m_options, m_positional, argc, argv);
|
||
return result;
|
||
}
|
||
|
||
inline
|
||
void
|
||
ParseResult::parse(int& argc, char**& argv)
|
||
{
|
||
int current = 1;
|
||
|
||
int nextKeep = 1;
|
||
|
||
bool consume_remaining = false;
|
||
|
||
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
|
||
|
||
//if true is returned here then it was consumed, otherwise it is
|
||
//ignored
|
||
if (consume_positional(argv[current]))
|
||
{
|
||
}
|
||
else
|
||
{
|
||
argv[nextKeep] = argv[current];
|
||
++nextKeep;
|
||
}
|
||
//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())
|
||
{
|
||
throw option_not_exists_exception(name);
|
||
}
|
||
|
||
auto value = iter->second;
|
||
|
||
//if no argument then just add it
|
||
if (!value->has_arg())
|
||
{
|
||
parse_option(value, name);
|
||
}
|
||
else
|
||
{
|
||
//it must be the last argument
|
||
if (i + 1 == s.size())
|
||
{
|
||
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 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())
|
||
{
|
||
throw option_not_exists_exception(name);
|
||
}
|
||
|
||
auto opt = iter->second;
|
||
|
||
//equals provided for long option?
|
||
if (result[3].length() != 0)
|
||
{
|
||
//parse the option given
|
||
|
||
//but if it doesn't take an argument, this is an error
|
||
if (!opt->has_arg())
|
||
{
|
||
throw option_not_has_argument_exception(name, result[3]);
|
||
}
|
||
|
||
parse_option(opt, name, result[3]);
|
||
}
|
||
else
|
||
{
|
||
if (opt->has_arg())
|
||
{
|
||
//parse the next argument
|
||
checked_parse_arg(argc, argv, current, opt, name);
|
||
}
|
||
else
|
||
{
|
||
//parse with empty argument
|
||
parse_option(opt, name);
|
||
}
|
||
}
|
||
}
|
||
|
||
}
|
||
|
||
++current;
|
||
}
|
||
|
||
for (auto& opt : m_options)
|
||
{
|
||
auto& detail = opt.second;
|
||
auto& value = detail->value();
|
||
|
||
auto& store = m_results[detail];
|
||
|
||
if(!store.count() && value.has_default()){
|
||
parse_default(detail);
|
||
}
|
||
}
|
||
|
||
if (consume_remaining)
|
||
{
|
||
while (current < argc)
|
||
{
|
||
if (!consume_positional(argv[current])) {
|
||
break;
|
||
}
|
||
++current;
|
||
}
|
||
|
||
//adjust argv for any that couldn't be swallowed
|
||
while (current != argc) {
|
||
argv[nextKeep] = argv[current];
|
||
++nextKeep;
|
||
++current;
|
||
}
|
||
}
|
||
|
||
argc = nextKeep;
|
||
|
||
}
|
||
|
||
inline
|
||
void
|
||
Options::add_option
|
||
(
|
||
const std::string& group,
|
||
const std::string& s,
|
||
const std::string& l,
|
||
std::string desc,
|
||
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.size() > 0)
|
||
{
|
||
add_one_option(s, option);
|
||
}
|
||
|
||
if (l.size() > 0)
|
||
{
|
||
add_one_option(l, option);
|
||
}
|
||
|
||
//add the help details
|
||
auto& options = m_help[group];
|
||
|
||
options.options.emplace_back(HelpOptionDetails{s, l, stringDesc,
|
||
value->has_arg(),
|
||
value->has_default(), value->get_default_value(),
|
||
value->has_implicit(), value->get_implicit_value(),
|
||
std::move(arg_help),
|
||
value->is_container()});
|
||
}
|
||
|
||
inline
|
||
void
|
||
Options::add_one_option
|
||
(
|
||
const std::string& option,
|
||
std::shared_ptr<OptionDetails> details
|
||
)
|
||
{
|
||
auto in = m_options.emplace(option, details);
|
||
|
||
if (!in.second)
|
||
{
|
||
throw option_exists_error(option);
|
||
}
|
||
}
|
||
|
||
inline
|
||
String
|
||
Options::help_one_group(const std::string& g) const
|
||
{
|
||
typedef std::vector<std::pair<String, String>> OptionHelp;
|
||
|
||
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 (o.is_container && m_positional_set.find(o.l) != m_positional_set.end())
|
||
{
|
||
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 (o.is_container && m_positional_set.find(o.l) != m_positional_set.end())
|
||
{
|
||
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 (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) + " [OPTION...]";
|
||
|
||
if (m_positional.size() > 0) {
|
||
result += " " + toLocalString(m_positional_help);
|
||
}
|
||
|
||
result += "\n\n";
|
||
|
||
if (help_groups.size() == 0)
|
||
{
|
||
generate_all_groups_help(result);
|
||
}
|
||
else
|
||
{
|
||
generate_group_help(result, help_groups);
|
||
}
|
||
|
||
return toUTF8String(result);
|
||
}
|
||
|
||
inline
|
||
const 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);
|
||
}
|
||
|
||
}
|
||
|
||
#endif //CXXOPTS_HPP_INCLUDED
|