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Diffstat (limited to 'NorthstarDedicatedTest/include/spdlog/fmt/bundled/printf.h')
-rw-r--r-- | NorthstarDedicatedTest/include/spdlog/fmt/bundled/printf.h | 751 |
1 files changed, 751 insertions, 0 deletions
diff --git a/NorthstarDedicatedTest/include/spdlog/fmt/bundled/printf.h b/NorthstarDedicatedTest/include/spdlog/fmt/bundled/printf.h new file mode 100644 index 00000000..8c28ac23 --- /dev/null +++ b/NorthstarDedicatedTest/include/spdlog/fmt/bundled/printf.h @@ -0,0 +1,751 @@ +// Formatting library for C++ - legacy printf implementation +// +// Copyright (c) 2012 - 2016, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_PRINTF_H_ +#define FMT_PRINTF_H_ + +#include <algorithm> // std::max +#include <limits> // std::numeric_limits + +#include "ostream.h" + +FMT_BEGIN_NAMESPACE +namespace detail { + +// Checks if a value fits in int - used to avoid warnings about comparing +// signed and unsigned integers. +template <bool IsSigned> struct int_checker { + template <typename T> static bool fits_in_int(T value) { + unsigned max = max_value<int>(); + return value <= max; + } + static bool fits_in_int(bool) { return true; } +}; + +template <> struct int_checker<true> { + template <typename T> static bool fits_in_int(T value) { + return value >= (std::numeric_limits<int>::min)() && + value <= max_value<int>(); + } + static bool fits_in_int(int) { return true; } +}; + +class printf_precision_handler { + public: + template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)> + int operator()(T value) { + if (!int_checker<std::numeric_limits<T>::is_signed>::fits_in_int(value)) + FMT_THROW(format_error("number is too big")); + return (std::max)(static_cast<int>(value), 0); + } + + template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)> + int operator()(T) { + FMT_THROW(format_error("precision is not integer")); + return 0; + } +}; + +// An argument visitor that returns true iff arg is a zero integer. +class is_zero_int { + public: + template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)> + bool operator()(T value) { + return value == 0; + } + + template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)> + bool operator()(T) { + return false; + } +}; + +template <typename T> struct make_unsigned_or_bool : std::make_unsigned<T> {}; + +template <> struct make_unsigned_or_bool<bool> { using type = bool; }; + +template <typename T, typename Context> class arg_converter { + private: + using char_type = typename Context::char_type; + + basic_format_arg<Context>& arg_; + char_type type_; + + public: + arg_converter(basic_format_arg<Context>& arg, char_type type) + : arg_(arg), type_(type) {} + + void operator()(bool value) { + if (type_ != 's') operator()<bool>(value); + } + + template <typename U, FMT_ENABLE_IF(std::is_integral<U>::value)> + void operator()(U value) { + bool is_signed = type_ == 'd' || type_ == 'i'; + using target_type = conditional_t<std::is_same<T, void>::value, U, T>; + if (const_check(sizeof(target_type) <= sizeof(int))) { + // Extra casts are used to silence warnings. + if (is_signed) { + arg_ = detail::make_arg<Context>( + static_cast<int>(static_cast<target_type>(value))); + } else { + using unsigned_type = typename make_unsigned_or_bool<target_type>::type; + arg_ = detail::make_arg<Context>( + static_cast<unsigned>(static_cast<unsigned_type>(value))); + } + } else { + if (is_signed) { + // glibc's printf doesn't sign extend arguments of smaller types: + // std::printf("%lld", -42); // prints "4294967254" + // but we don't have to do the same because it's a UB. + arg_ = detail::make_arg<Context>(static_cast<long long>(value)); + } else { + arg_ = detail::make_arg<Context>( + static_cast<typename make_unsigned_or_bool<U>::type>(value)); + } + } + } + + template <typename U, FMT_ENABLE_IF(!std::is_integral<U>::value)> + void operator()(U) {} // No conversion needed for non-integral types. +}; + +// Converts an integer argument to T for printf, if T is an integral type. +// If T is void, the argument is converted to corresponding signed or unsigned +// type depending on the type specifier: 'd' and 'i' - signed, other - +// unsigned). +template <typename T, typename Context, typename Char> +void convert_arg(basic_format_arg<Context>& arg, Char type) { + visit_format_arg(arg_converter<T, Context>(arg, type), arg); +} + +// Converts an integer argument to char for printf. +template <typename Context> class char_converter { + private: + basic_format_arg<Context>& arg_; + + public: + explicit char_converter(basic_format_arg<Context>& arg) : arg_(arg) {} + + template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)> + void operator()(T value) { + arg_ = detail::make_arg<Context>( + static_cast<typename Context::char_type>(value)); + } + + template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)> + void operator()(T) {} // No conversion needed for non-integral types. +}; + +// An argument visitor that return a pointer to a C string if argument is a +// string or null otherwise. +template <typename Char> struct get_cstring { + template <typename T> const Char* operator()(T) { return nullptr; } + const Char* operator()(const Char* s) { return s; } +}; + +// Checks if an argument is a valid printf width specifier and sets +// left alignment if it is negative. +template <typename Char> class printf_width_handler { + private: + using format_specs = basic_format_specs<Char>; + + format_specs& specs_; + + public: + explicit printf_width_handler(format_specs& specs) : specs_(specs) {} + + template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)> + unsigned operator()(T value) { + auto width = static_cast<uint32_or_64_or_128_t<T>>(value); + if (detail::is_negative(value)) { + specs_.align = align::left; + width = 0 - width; + } + unsigned int_max = max_value<int>(); + if (width > int_max) FMT_THROW(format_error("number is too big")); + return static_cast<unsigned>(width); + } + + template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)> + unsigned operator()(T) { + FMT_THROW(format_error("width is not integer")); + return 0; + } +}; + +template <typename Char, typename Context> +void vprintf(buffer<Char>& buf, basic_string_view<Char> format, + basic_format_args<Context> args) { + Context(buffer_appender<Char>(buf), format, args).format(); +} +} // namespace detail + +// For printing into memory_buffer. +template <typename Char, typename Context> +FMT_DEPRECATED void printf(detail::buffer<Char>& buf, + basic_string_view<Char> format, + basic_format_args<Context> args) { + return detail::vprintf(buf, format, args); +} +using detail::vprintf; + +template <typename Char> +class basic_printf_parse_context : public basic_format_parse_context<Char> { + using basic_format_parse_context<Char>::basic_format_parse_context; +}; +template <typename OutputIt, typename Char> class basic_printf_context; + +/** + \rst + The ``printf`` argument formatter. + \endrst + */ +template <typename OutputIt, typename Char> +class printf_arg_formatter : public detail::arg_formatter_base<OutputIt, Char> { + public: + using iterator = OutputIt; + + private: + using char_type = Char; + using base = detail::arg_formatter_base<OutputIt, Char>; + using context_type = basic_printf_context<OutputIt, Char>; + + context_type& context_; + + void write_null_pointer(char) { + this->specs()->type = 0; + this->write("(nil)"); + } + + void write_null_pointer(wchar_t) { + this->specs()->type = 0; + this->write(L"(nil)"); + } + + public: + using format_specs = typename base::format_specs; + + /** + \rst + Constructs an argument formatter object. + *buffer* is a reference to the output buffer and *specs* contains format + specifier information for standard argument types. + \endrst + */ + printf_arg_formatter(iterator iter, format_specs& specs, context_type& ctx) + : base(iter, &specs, detail::locale_ref()), context_(ctx) {} + + template <typename T, FMT_ENABLE_IF(fmt::detail::is_integral<T>::value)> + iterator operator()(T value) { + // MSVC2013 fails to compile separate overloads for bool and char_type so + // use std::is_same instead. + if (std::is_same<T, bool>::value) { + format_specs& fmt_specs = *this->specs(); + if (fmt_specs.type != 's') return base::operator()(value ? 1 : 0); + fmt_specs.type = 0; + this->write(value != 0); + } else if (std::is_same<T, char_type>::value) { + format_specs& fmt_specs = *this->specs(); + if (fmt_specs.type && fmt_specs.type != 'c') + return (*this)(static_cast<int>(value)); + fmt_specs.sign = sign::none; + fmt_specs.alt = false; + fmt_specs.fill[0] = ' '; // Ignore '0' flag for char types. + // align::numeric needs to be overwritten here since the '0' flag is + // ignored for non-numeric types + if (fmt_specs.align == align::none || fmt_specs.align == align::numeric) + fmt_specs.align = align::right; + return base::operator()(value); + } else { + return base::operator()(value); + } + return this->out(); + } + + template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)> + iterator operator()(T value) { + return base::operator()(value); + } + + /** Formats a null-terminated C string. */ + iterator operator()(const char* value) { + if (value) + base::operator()(value); + else if (this->specs()->type == 'p') + write_null_pointer(char_type()); + else + this->write("(null)"); + return this->out(); + } + + /** Formats a null-terminated wide C string. */ + iterator operator()(const wchar_t* value) { + if (value) + base::operator()(value); + else if (this->specs()->type == 'p') + write_null_pointer(char_type()); + else + this->write(L"(null)"); + return this->out(); + } + + iterator operator()(basic_string_view<char_type> value) { + return base::operator()(value); + } + + iterator operator()(monostate value) { return base::operator()(value); } + + /** Formats a pointer. */ + iterator operator()(const void* value) { + if (value) return base::operator()(value); + this->specs()->type = 0; + write_null_pointer(char_type()); + return this->out(); + } + + /** Formats an argument of a custom (user-defined) type. */ + iterator operator()(typename basic_format_arg<context_type>::handle handle) { + handle.format(context_.parse_context(), context_); + return this->out(); + } +}; + +template <typename T> struct printf_formatter { + printf_formatter() = delete; + + template <typename ParseContext> + auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + return ctx.begin(); + } + + template <typename FormatContext> + auto format(const T& value, FormatContext& ctx) -> decltype(ctx.out()) { + detail::format_value(detail::get_container(ctx.out()), value); + return ctx.out(); + } +}; + +/** + This template formats data and writes the output through an output iterator. + */ +template <typename OutputIt, typename Char> class basic_printf_context { + public: + /** The character type for the output. */ + using char_type = Char; + using iterator = OutputIt; + using format_arg = basic_format_arg<basic_printf_context>; + using parse_context_type = basic_printf_parse_context<Char>; + template <typename T> using formatter_type = printf_formatter<T>; + + private: + using format_specs = basic_format_specs<char_type>; + + OutputIt out_; + basic_format_args<basic_printf_context> args_; + parse_context_type parse_ctx_; + + static void parse_flags(format_specs& specs, const Char*& it, + const Char* end); + + // Returns the argument with specified index or, if arg_index is -1, the next + // argument. + format_arg get_arg(int arg_index = -1); + + // Parses argument index, flags and width and returns the argument index. + int parse_header(const Char*& it, const Char* end, format_specs& specs); + + public: + /** + \rst + Constructs a ``printf_context`` object. References to the arguments are + stored in the context object so make sure they have appropriate lifetimes. + \endrst + */ + basic_printf_context(OutputIt out, basic_string_view<char_type> format_str, + basic_format_args<basic_printf_context> args) + : out_(out), args_(args), parse_ctx_(format_str) {} + + OutputIt out() { return out_; } + void advance_to(OutputIt it) { out_ = it; } + + detail::locale_ref locale() { return {}; } + + format_arg arg(int id) const { return args_.get(id); } + + parse_context_type& parse_context() { return parse_ctx_; } + + FMT_CONSTEXPR void on_error(const char* message) { + parse_ctx_.on_error(message); + } + + /** Formats stored arguments and writes the output to the range. */ + template <typename ArgFormatter = printf_arg_formatter<OutputIt, Char>> + OutputIt format(); +}; + +template <typename OutputIt, typename Char> +void basic_printf_context<OutputIt, Char>::parse_flags(format_specs& specs, + const Char*& it, + const Char* end) { + for (; it != end; ++it) { + switch (*it) { + case '-': + specs.align = align::left; + break; + case '+': + specs.sign = sign::plus; + break; + case '0': + specs.fill[0] = '0'; + break; + case ' ': + if (specs.sign != sign::plus) { + specs.sign = sign::space; + } + break; + case '#': + specs.alt = true; + break; + default: + return; + } + } +} + +template <typename OutputIt, typename Char> +typename basic_printf_context<OutputIt, Char>::format_arg +basic_printf_context<OutputIt, Char>::get_arg(int arg_index) { + if (arg_index < 0) + arg_index = parse_ctx_.next_arg_id(); + else + parse_ctx_.check_arg_id(--arg_index); + return detail::get_arg(*this, arg_index); +} + +template <typename OutputIt, typename Char> +int basic_printf_context<OutputIt, Char>::parse_header(const Char*& it, + const Char* end, + format_specs& specs) { + int arg_index = -1; + char_type c = *it; + if (c >= '0' && c <= '9') { + // Parse an argument index (if followed by '$') or a width possibly + // preceded with '0' flag(s). + detail::error_handler eh; + int value = parse_nonnegative_int(it, end, eh); + if (it != end && *it == '$') { // value is an argument index + ++it; + arg_index = value; + } else { + if (c == '0') specs.fill[0] = '0'; + if (value != 0) { + // Nonzero value means that we parsed width and don't need to + // parse it or flags again, so return now. + specs.width = value; + return arg_index; + } + } + } + parse_flags(specs, it, end); + // Parse width. + if (it != end) { + if (*it >= '0' && *it <= '9') { + detail::error_handler eh; + specs.width = parse_nonnegative_int(it, end, eh); + } else if (*it == '*') { + ++it; + specs.width = static_cast<int>(visit_format_arg( + detail::printf_width_handler<char_type>(specs), get_arg())); + } + } + return arg_index; +} + +template <typename OutputIt, typename Char> +template <typename ArgFormatter> +OutputIt basic_printf_context<OutputIt, Char>::format() { + auto out = this->out(); + const Char* start = parse_ctx_.begin(); + const Char* end = parse_ctx_.end(); + auto it = start; + while (it != end) { + char_type c = *it++; + if (c != '%') continue; + if (it != end && *it == c) { + out = std::copy(start, it, out); + start = ++it; + continue; + } + out = std::copy(start, it - 1, out); + + format_specs specs; + specs.align = align::right; + + // Parse argument index, flags and width. + int arg_index = parse_header(it, end, specs); + if (arg_index == 0) on_error("argument not found"); + + // Parse precision. + if (it != end && *it == '.') { + ++it; + c = it != end ? *it : 0; + if ('0' <= c && c <= '9') { + detail::error_handler eh; + specs.precision = parse_nonnegative_int(it, end, eh); + } else if (c == '*') { + ++it; + specs.precision = static_cast<int>( + visit_format_arg(detail::printf_precision_handler(), get_arg())); + } else { + specs.precision = 0; + } + } + + format_arg arg = get_arg(arg_index); + // For d, i, o, u, x, and X conversion specifiers, if a precision is + // specified, the '0' flag is ignored + if (specs.precision >= 0 && arg.is_integral()) + specs.fill[0] = + ' '; // Ignore '0' flag for non-numeric types or if '-' present. + if (specs.precision >= 0 && arg.type() == detail::type::cstring_type) { + auto str = visit_format_arg(detail::get_cstring<Char>(), arg); + auto str_end = str + specs.precision; + auto nul = std::find(str, str_end, Char()); + arg = detail::make_arg<basic_printf_context>(basic_string_view<Char>( + str, + detail::to_unsigned(nul != str_end ? nul - str : specs.precision))); + } + if (specs.alt && visit_format_arg(detail::is_zero_int(), arg)) + specs.alt = false; + if (specs.fill[0] == '0') { + if (arg.is_arithmetic() && specs.align != align::left) + specs.align = align::numeric; + else + specs.fill[0] = ' '; // Ignore '0' flag for non-numeric types or if '-' + // flag is also present. + } + + // Parse length and convert the argument to the required type. + c = it != end ? *it++ : 0; + char_type t = it != end ? *it : 0; + using detail::convert_arg; + switch (c) { + case 'h': + if (t == 'h') { + ++it; + t = it != end ? *it : 0; + convert_arg<signed char>(arg, t); + } else { + convert_arg<short>(arg, t); + } + break; + case 'l': + if (t == 'l') { + ++it; + t = it != end ? *it : 0; + convert_arg<long long>(arg, t); + } else { + convert_arg<long>(arg, t); + } + break; + case 'j': + convert_arg<intmax_t>(arg, t); + break; + case 'z': + convert_arg<size_t>(arg, t); + break; + case 't': + convert_arg<std::ptrdiff_t>(arg, t); + break; + case 'L': + // printf produces garbage when 'L' is omitted for long double, no + // need to do the same. + break; + default: + --it; + convert_arg<void>(arg, c); + } + + // Parse type. + if (it == end) FMT_THROW(format_error("invalid format string")); + specs.type = static_cast<char>(*it++); + if (arg.is_integral()) { + // Normalize type. + switch (specs.type) { + case 'i': + case 'u': + specs.type = 'd'; + break; + case 'c': + visit_format_arg(detail::char_converter<basic_printf_context>(arg), + arg); + break; + } + } + + start = it; + + // Format argument. + out = visit_format_arg(ArgFormatter(out, specs, *this), arg); + } + return std::copy(start, it, out); +} + +template <typename Char> +using basic_printf_context_t = + basic_printf_context<detail::buffer_appender<Char>, Char>; + +using printf_context = basic_printf_context_t<char>; +using wprintf_context = basic_printf_context_t<wchar_t>; + +using printf_args = basic_format_args<printf_context>; +using wprintf_args = basic_format_args<wprintf_context>; + +/** + \rst + Constructs an `~fmt::format_arg_store` object that contains references to + arguments and can be implicitly converted to `~fmt::printf_args`. + \endrst + */ +template <typename... Args> +inline format_arg_store<printf_context, Args...> make_printf_args( + const Args&... args) { + return {args...}; +} + +/** + \rst + Constructs an `~fmt::format_arg_store` object that contains references to + arguments and can be implicitly converted to `~fmt::wprintf_args`. + \endrst + */ +template <typename... Args> +inline format_arg_store<wprintf_context, Args...> make_wprintf_args( + const Args&... args) { + return {args...}; +} + +template <typename S, typename Char = char_t<S>> +inline std::basic_string<Char> vsprintf( + const S& format, + basic_format_args<basic_printf_context_t<type_identity_t<Char>>> args) { + basic_memory_buffer<Char> buffer; + vprintf(buffer, to_string_view(format), args); + return to_string(buffer); +} + +/** + \rst + Formats arguments and returns the result as a string. + + **Example**:: + + std::string message = fmt::sprintf("The answer is %d", 42); + \endrst +*/ +template <typename S, typename... Args, + typename Char = enable_if_t<detail::is_string<S>::value, char_t<S>>> +inline std::basic_string<Char> sprintf(const S& format, const Args&... args) { + using context = basic_printf_context_t<Char>; + return vsprintf(to_string_view(format), make_format_args<context>(args...)); +} + +template <typename S, typename Char = char_t<S>> +inline int vfprintf( + std::FILE* f, const S& format, + basic_format_args<basic_printf_context_t<type_identity_t<Char>>> args) { + basic_memory_buffer<Char> buffer; + vprintf(buffer, to_string_view(format), args); + size_t size = buffer.size(); + return std::fwrite(buffer.data(), sizeof(Char), size, f) < size + ? -1 + : static_cast<int>(size); +} + +/** + \rst + Prints formatted data to the file *f*. + + **Example**:: + + fmt::fprintf(stderr, "Don't %s!", "panic"); + \endrst + */ +template <typename S, typename... Args, + typename Char = enable_if_t<detail::is_string<S>::value, char_t<S>>> +inline int fprintf(std::FILE* f, const S& format, const Args&... args) { + using context = basic_printf_context_t<Char>; + return vfprintf(f, to_string_view(format), + make_format_args<context>(args...)); +} + +template <typename S, typename Char = char_t<S>> +inline int vprintf( + const S& format, + basic_format_args<basic_printf_context_t<type_identity_t<Char>>> args) { + return vfprintf(stdout, to_string_view(format), args); +} + +/** + \rst + Prints formatted data to ``stdout``. + + **Example**:: + + fmt::printf("Elapsed time: %.2f seconds", 1.23); + \endrst + */ +template <typename S, typename... Args, + FMT_ENABLE_IF(detail::is_string<S>::value)> +inline int printf(const S& format_str, const Args&... args) { + using context = basic_printf_context_t<char_t<S>>; + return vprintf(to_string_view(format_str), + make_format_args<context>(args...)); +} + +template <typename S, typename Char = char_t<S>> +inline int vfprintf( + std::basic_ostream<Char>& os, const S& format, + basic_format_args<basic_printf_context_t<type_identity_t<Char>>> args) { + basic_memory_buffer<Char> buffer; + vprintf(buffer, to_string_view(format), args); + detail::write_buffer(os, buffer); + return static_cast<int>(buffer.size()); +} + +/** Formats arguments and writes the output to the range. */ +template <typename ArgFormatter, typename Char, + typename Context = + basic_printf_context<typename ArgFormatter::iterator, Char>> +typename ArgFormatter::iterator vprintf( + detail::buffer<Char>& out, basic_string_view<Char> format_str, + basic_format_args<type_identity_t<Context>> args) { + typename ArgFormatter::iterator iter(out); + Context(iter, format_str, args).template format<ArgFormatter>(); + return iter; +} + +/** + \rst + Prints formatted data to the stream *os*. + + **Example**:: + + fmt::fprintf(cerr, "Don't %s!", "panic"); + \endrst + */ +template <typename S, typename... Args, typename Char = char_t<S>> +inline int fprintf(std::basic_ostream<Char>& os, const S& format_str, + const Args&... args) { + using context = basic_printf_context_t<Char>; + return vfprintf(os, to_string_view(format_str), + make_format_args<context>(args...)); +} +FMT_END_NAMESPACE + +#endif // FMT_PRINTF_H_ |