From 7ae946f4c7476c1336b1cc8f46e47dcc40af4eed Mon Sep 17 00:00:00 2001 From: Lauchmelder Date: Tue, 27 Apr 2021 13:40:00 +0200 Subject: [PATCH 01/22] Update README.md --- README.md | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/README.md b/README.md index 1ab6eb5..2853074 100644 --- a/README.md +++ b/README.md @@ -6,6 +6,10 @@ A commandline tool for fourier transforming audio files spectralyze file1 [file2...] ``` +## Supported Formats +* WAV +* AIFF + ## What does it do Spectralyze reads one or more audio files from the standard arguments and creates JSON files containing the spectrum of the file. Each audio channel in the file is transformed separately. The resulting JSON has the following structure From c279d783bc9dfc304b1b62753b798c281afe0fc7 Mon Sep 17 00:00:00 2001 From: Robert Date: Tue, 27 Apr 2021 17:15:32 +0200 Subject: [PATCH 02/22] Added commandline parsing --- CMakeLists.txt | 3 +- README.md | 5 + lib/cxxopts/cxxopts.hpp | 2385 +++++++++++++++++++++++++++++++++++++++ src/FFT.hpp | 3 +- src/main.cpp | 120 +- 5 files changed, 2497 insertions(+), 19 deletions(-) create mode 100644 lib/cxxopts/cxxopts.hpp diff --git a/CMakeLists.txt b/CMakeLists.txt index aae9228..5dd2786 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -6,9 +6,10 @@ project(spectralyze) add_executable(spectralyze "src/main.cpp" - "src/FFT.hpp") + "src/FFT.hpp" "lib/cxxopts/cxxopts.hpp") target_include_directories(spectralyze PRIVATE "lib/AudioFile" "lib/json" + "lib/cxxopts" ) \ No newline at end of file diff --git a/README.md b/README.md index 2853074..5c02642 100644 --- a/README.md +++ b/README.md @@ -24,3 +24,8 @@ Each audio channel in the file is transformed separately. The resulting JSON has } ``` Every supplied audio file will result in one JSON file. The magnitude is the absolute value of the real and imaginary part of the Fourier transformation. + +## Used libraries +* [AudioFile](https://github.com/adamstark/AudioFile) for loading audio files +* [JSON for Modern C++](https://github.com/nlohmann/json) for writing JSON data +* [cxxopts](https://github.com/jarro2783/cxxopts) for parsing commandline arguments \ No newline at end of file diff --git a/lib/cxxopts/cxxopts.hpp b/lib/cxxopts/cxxopts.hpp new file mode 100644 index 0000000..8d293ed --- /dev/null +++ b/lib/cxxopts/cxxopts.hpp @@ -0,0 +1,2385 @@ +/* + +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 + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#ifdef __cpp_lib_optional +#include +#define CXXOPTS_HAS_OPTIONAL +#endif + +#if __cplusplus >= 201603L +#define CXXOPTS_NODISCARD [[nodiscard]] +#else +#define CXXOPTS_NODISCARD +#endif + +#ifndef CXXOPTS_VECTOR_DELIMITER +#define CXXOPTS_VECTOR_DELIMITER ',' +#endif + +#define CXXOPTS__VERSION_MAJOR 3 +#define CXXOPTS__VERSION_MINOR 0 +#define CXXOPTS__VERSION_PATCH 0 + +namespace cxxopts +{ + static constexpr struct { + uint8_t major, minor, patch; + } version = { + CXXOPTS__VERSION_MAJOR, + CXXOPTS__VERSION_MINOR, + CXXOPTS__VERSION_PATCH + }; +} // namespace cxxopts + +//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 can be found by the +//compiler, and that icu-uc is linked in to the binary. + +#ifdef CXXOPTS_USE_UNICODE +#include + +namespace cxxopts +{ + using String = icu::UnicodeString; + + inline + String + toLocalString(std::string s) + { + return icu::UnicodeString::fromUTF8(std::move(s)); + } + + class UnicodeStringIterator : public + std::iterator + { + 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, size_t n, UChar32 c) + { + for (size_t i = 0; i != n; ++i) + { + s.append(c); + } + + return s; + } + + template + 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 +{ + using String = std::string; + + template + T + toLocalString(T&& t) + { + return std::forward(t); + } + + inline + size_t + stringLength(const String& s) + { + return s.length(); + } + + inline + String& + stringAppend(String& s, const String& a) + { + return s.append(a); + } + + inline + String& + stringAppend(String& s, size_t n, char c) + { + return s.append(n, c); + } + + template + String& + stringAppend(String& s, Iterator begin, Iterator end) + { + return s.append(begin, end); + } + + template + std::string + toUTF8String(T&& t) + { + return std::forward(t); + } + + inline + bool + empty(const std::string& s) + { + return s.empty(); + } +} // namespace cxxopts + +//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 + } // namespace + +#if defined(__GNUC__) +// GNU GCC with -Weffc++ will issue a warning regarding the upcoming class, we want to silence it: +// warning: base class 'class std::enable_shared_from_this' has accessible non-virtual destructor +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wnon-virtual-dtor" +#pragma GCC diagnostic ignored "-Weffc++" +// This will be ignored under other compilers like LLVM clang. +#endif + class Value : public std::enable_shared_from_this + { + public: + + virtual ~Value() = default; + + virtual + std::shared_ptr + clone() const = 0; + + virtual void + parse(const std::string& text) const = 0; + + virtual void + parse() 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 + default_value(const std::string& value) = 0; + + virtual std::shared_ptr + implicit_value(const std::string& value) = 0; + + virtual std::shared_ptr + no_implicit_value() = 0; + + virtual bool + is_boolean() const = 0; + }; +#if defined(__GNUC__) +#pragma GCC diagnostic pop +#endif + class OptionException : public std::exception + { + public: + explicit OptionException(std::string message) + : m_message(std::move(message)) + { + } + + CXXOPTS_NODISCARD + const char* + what() const noexcept override + { + return m_message.c_str(); + } + + private: + std::string m_message; + }; + + class OptionSpecException : public OptionException + { + public: + + explicit OptionSpecException(const std::string& message) + : OptionException(message) + { + } + }; + + class OptionParseException : public OptionException + { + public: + explicit OptionParseException(const std::string& message) + : OptionException(message) + { + } + }; + + class option_exists_error : public OptionSpecException + { + public: + explicit option_exists_error(const std::string& option) + : OptionSpecException("Option " + LQUOTE + option + RQUOTE + " already exists") + { + } + }; + + class invalid_option_format_error : public OptionSpecException + { + public: + explicit invalid_option_format_error(const std::string& format) + : OptionSpecException("Invalid option format " + LQUOTE + format + RQUOTE) + { + } + }; + + class option_syntax_exception : public OptionParseException { + public: + explicit option_syntax_exception(const std::string& text) + : OptionParseException("Argument " + LQUOTE + text + RQUOTE + + " starts with a - but has incorrect syntax") + { + } + }; + + class option_not_exists_exception : public OptionParseException + { + public: + explicit option_not_exists_exception(const std::string& option) + : OptionParseException("Option " + LQUOTE + option + RQUOTE + " does not exist") + { + } + }; + + class missing_argument_exception : public OptionParseException + { + public: + explicit missing_argument_exception(const std::string& option) + : OptionParseException( + "Option " + LQUOTE + option + RQUOTE + " is missing an argument" + ) + { + } + }; + + class option_requires_argument_exception : public OptionParseException + { + public: + explicit option_requires_argument_exception(const std::string& option) + : OptionParseException( + "Option " + LQUOTE + option + RQUOTE + " requires an argument" + ) + { + } + }; + + class option_not_has_argument_exception : public OptionParseException + { + public: + option_not_has_argument_exception + ( + const std::string& option, + const std::string& arg + ) + : OptionParseException( + "Option " + LQUOTE + option + RQUOTE + + " does not take an argument, but argument " + + LQUOTE + arg + RQUOTE + " given" + ) + { + } + }; + + class option_not_present_exception : public OptionParseException + { + public: + explicit option_not_present_exception(const std::string& option) + : OptionParseException("Option " + LQUOTE + option + RQUOTE + " not present") + { + } + }; + + class option_has_no_value_exception : public OptionException + { + public: + explicit option_has_no_value_exception(const std::string& option) + : OptionException( + option.empty() ? + ("Option " + LQUOTE + option + RQUOTE + " has no value") : + "Option has no value") + { + } + }; + + class argument_incorrect_type : public OptionParseException + { + public: + explicit argument_incorrect_type + ( + const std::string& arg + ) + : OptionParseException( + "Argument " + LQUOTE + arg + RQUOTE + " failed to parse" + ) + { + } + }; + + class option_required_exception : public OptionParseException + { + public: + explicit option_required_exception(const std::string& option) + : OptionParseException( + "Option " + LQUOTE + option + RQUOTE + " is required but not present" + ) + { + } + }; + + template + void throw_or_mimic(const std::string& text) + { + static_assert(std::is_base_of::value, + "throw_or_mimic only works on std::exception and " + "deriving classes"); + +#ifndef CXXOPTS_NO_EXCEPTIONS + // If CXXOPTS_NO_EXCEPTIONS is not defined, just throw + throw T{ text }; +#else + // Otherwise manually instantiate the exception, print what() to stderr, + // and exit + T exception{ text }; + std::cerr << exception.what() << std::endl; + std::exit(EXIT_FAILURE); +#endif + } + + namespace values + { + namespace + { + std::basic_regex integer_pattern + ("(-)?(0x)?([0-9a-zA-Z]+)|((0x)?0)"); + std::basic_regex truthy_pattern + ("(t|T)(rue)?|1"); + std::basic_regex falsy_pattern + ("(f|F)(alse)?|0"); + } // namespace + + namespace detail + { + template + struct SignedCheck; + + template + struct SignedCheck + { + template + void + operator()(bool negative, U u, const std::string& text) + { + if (negative) + { + if (u > static_cast((std::numeric_limits::min)())) + { + throw_or_mimic(text); + } + } + else + { + if (u > static_cast((std::numeric_limits::max)())) + { + throw_or_mimic(text); + } + } + } + }; + + template + struct SignedCheck + { + template + void + operator()(bool, U, const std::string&) const {} + }; + + template + void + check_signed_range(bool negative, U value, const std::string& text) + { + SignedCheck::is_signed>()(negative, value, text); + } + } // namespace detail + + template + 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(-static_cast(t - 1) - 1); + } + + template + void + checked_negate(R&, T&&, const std::string& text, std::false_type) + { + throw_or_mimic(text); + } + + template + void + integer_parser(const std::string& text, T& value) + { + std::smatch match; + std::regex_match(text, match, integer_pattern); + + if (match.length() == 0) + { + throw_or_mimic(text); + } + + if (match.length(4) > 0) + { + value = 0; + return; + } + + using US = typename std::make_unsigned::type; + + constexpr bool is_signed = std::numeric_limits::is_signed; + const bool negative = match.length(1) > 0; + const uint8_t base = match.length(2) > 0 ? 16 : 10; + + auto value_match = match[3]; + + US result = 0; + + for (auto iter = value_match.first; iter != value_match.second; ++iter) + { + US digit = 0; + + if (*iter >= '0' && *iter <= '9') + { + digit = static_cast(*iter - '0'); + } + else if (base == 16 && *iter >= 'a' && *iter <= 'f') + { + digit = static_cast(*iter - 'a' + 10); + } + else if (base == 16 && *iter >= 'A' && *iter <= 'F') + { + digit = static_cast(*iter - 'A' + 10); + } + else + { + throw_or_mimic(text); + } + + const US next = static_cast(result * base + digit); + if (result > next) + { + throw_or_mimic(text); + } + + result = next; + } + + detail::check_signed_range(negative, result, text); + + if (negative) + { + checked_negate(value, result, text, std::integral_constant()); + } + else + { + value = static_cast(result); + } + } + + template + void stringstream_parser(const std::string& text, T& value) + { + std::stringstream in(text); + in >> value; + if (!in) { + throw_or_mimic(text); + } + } + + inline + void + parse_value(const std::string& text, uint8_t& value) + { + integer_parser(text, value); + } + + inline + void + parse_value(const std::string& text, int8_t& value) + { + integer_parser(text, value); + } + + inline + void + parse_value(const std::string& text, uint16_t& value) + { + integer_parser(text, value); + } + + inline + void + parse_value(const std::string& text, int16_t& value) + { + integer_parser(text, value); + } + + inline + void + parse_value(const std::string& text, uint32_t& value) + { + integer_parser(text, value); + } + + inline + void + parse_value(const std::string& text, int32_t& value) + { + integer_parser(text, value); + } + + inline + void + parse_value(const std::string& text, uint64_t& value) + { + integer_parser(text, value); + } + + inline + void + parse_value(const std::string& text, int64_t& value) + { + integer_parser(text, value); + } + + inline + void + parse_value(const std::string& text, bool& value) + { + std::smatch result; + std::regex_match(text, result, truthy_pattern); + + if (!result.empty()) + { + value = true; + return; + } + + std::regex_match(text, result, falsy_pattern); + if (!result.empty()) + { + value = false; + return; + } + + throw_or_mimic(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 + void + parse_value(const std::string& text, T& value) { + stringstream_parser(text, value); + } + + template + void + parse_value(const std::string& text, std::vector& value) + { + std::stringstream in(text); + std::string token; + while (!in.eof() && std::getline(in, token, CXXOPTS_VECTOR_DELIMITER)) { + T v; + parse_value(token, v); + value.emplace_back(std::move(v)); + } + } + +#ifdef CXXOPTS_HAS_OPTIONAL + template + void + parse_value(const std::string& text, std::optional& 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(text); + } + + c = text[0]; + } + + template + struct type_is_container + { + static constexpr bool value = false; + }; + + template + struct type_is_container> + { + static constexpr bool value = true; + }; + + template + class abstract_value : public Value + { + using Self = abstract_value; + + public: + abstract_value() + : m_result(std::make_shared()) + , 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(); + 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::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 + default_value(const std::string& value) override + { + m_default = true; + m_default_value = value; + return shared_from_this(); + } + + std::shared_ptr + implicit_value(const std::string& value) override + { + m_implicit = true; + m_implicit_value = value; + return shared_from_this(); + } + + std::shared_ptr + 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::value; + } + + const T& + get() const + { + if (m_store == nullptr) + { + return *m_result; + } + return *m_store; + } + + protected: + std::shared_ptr m_result{}; + T* m_store{}; + + bool m_default = false; + bool m_implicit = false; + + std::string m_default_value{}; + std::string m_implicit_value{}; + }; + + template + class standard_value : public abstract_value + { + public: + using abstract_value::abstract_value; + + CXXOPTS_NODISCARD + std::shared_ptr + clone() const override + { + return std::make_shared>(*this); + } + }; + + template <> + class standard_value : public abstract_value + { + 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 + clone() const override + { + return std::make_shared>(*this); + } + + private: + + void + set_default_and_implicit() + { + m_default = true; + m_default_value = "false"; + m_implicit = true; + m_implicit_value = "true"; + } + }; + } // namespace values + + template + std::shared_ptr + value() + { + return std::make_shared>(); + } + + template + std::shared_ptr + value(T& t) + { + return std::make_shared>(&t); + } + + class OptionAdder; + + class OptionDetails + { + public: + OptionDetails + ( + std::string short_, + std::string long_, + String desc, + std::shared_ptr 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{}(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 + 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 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 options{}; + }; + + class OptionValue + { + public: + void + parse + ( + const std::shared_ptr& 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& details) + { + ensure_value(details); + m_default = true; + m_long_name = &details->long_name(); + m_value->parse(); + } + +#if defined(__GNUC__) +#if __GNUC__ <= 10 && __GNUC_MINOR__ <= 1 +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Werror=null-dereference" +#endif +#endif + + CXXOPTS_NODISCARD + size_t + count() const noexcept + { + return m_count; + } + +#if defined(__GNUC__) +#if __GNUC__ <= 10 && __GNUC_MINOR__ <= 1 +#pragma GCC diagnostic pop +#endif +#endif + + // TODO: maybe default options should count towards the number of arguments + CXXOPTS_NODISCARD + bool + has_default() const noexcept + { + return m_default; + } + + template + const T& + as() const + { + if (m_value == nullptr) { + throw_or_mimic( + m_long_name == nullptr ? "" : *m_long_name); + } + +#ifdef CXXOPTS_NO_RTTI + return static_cast&>(*m_value).get(); +#else + return dynamic_cast&>(*m_value).get(); +#endif + } + + private: + void + ensure_value(const std::shared_ptr& 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 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 + 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; + using NameHashMap = std::unordered_map; + + class ParseResult + { + public: + + ParseResult() = default; + ParseResult(const ParseResult&) = default; + + ParseResult(NameHashMap&& keys, ParsedHashMap&& values, std::vector sequential, std::vector&& unmatched_args) + : m_keys(std::move(keys)) + , m_values(std::move(values)) + , m_sequential(std::move(sequential)) + , m_unmatched(std::move(unmatched_args)) + { + } + + ParseResult& operator=(ParseResult&&) = default; + ParseResult& operator=(const ParseResult&) = default; + + size_t + count(const std::string& o) const + { + auto iter = m_keys.find(o); + if (iter == m_keys.end()) + { + return 0; + } + + auto viter = m_values.find(iter->second); + + if (viter == m_values.end()) + { + return 0; + } + + return viter->second.count(); + } + + const OptionValue& + operator[](const std::string& option) const + { + auto iter = m_keys.find(option); + + if (iter == m_keys.end()) + { + throw_or_mimic(option); + } + + auto viter = m_values.find(iter->second); + + if (viter == m_values.end()) + { + throw_or_mimic(option); + } + + return viter->second; + } + + const std::vector& + arguments() const + { + return m_sequential; + } + + const std::vector& + unmatched() const + { + return m_unmatched; + } + + private: + NameHashMap m_keys{}; + ParsedHashMap m_values{}; + std::vector m_sequential{}; + std::vector m_unmatched{}; + }; + + struct Option + { + Option + ( + std::string opts, + std::string desc, + std::shared_ptr value = ::cxxopts::value(), + 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 value_; + std::string arg_help_; + }; + + using OptionMap = std::unordered_map>; + using PositionalList = std::vector; + 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& 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& value, + const std::string& name, + const std::string& arg = "" + ); + + void + parse_default(const std::shared_ptr& details); + + private: + + void finalise_aliases(); + + const OptionMap& m_options; + const PositionalList& m_positional; + + std::vector m_sequential{}; + bool m_allow_unrecognised; + + ParsedHashMap m_parsed{}; + NameHashMap m_keys{}; + }; + + class Options + { + public: + + explicit Options(std::string program, std::string help_string = "") + : m_program(std::move(program)) + , m_help_string(toLocalString(std::move(help_string))) + , m_custom_help("[OPTION...]") + , m_positional_help("positional parameters") + , m_show_positional(false) + , m_allow_unrecognised(false) + , m_width(76) + , m_tab_expansion(false) + , m_options(std::make_shared()) + { + } + + 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); + + OptionAdder + add_options(std::string group = ""); + + void + add_options + ( + const std::string& group, + std::initializer_list