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Diffstat (limited to 'matching/include/spdlog/fmt/bundled/printf.h')
| -rw-r--r-- | matching/include/spdlog/fmt/bundled/printf.h | 855 |
1 files changed, 855 insertions, 0 deletions
diff --git a/matching/include/spdlog/fmt/bundled/printf.h b/matching/include/spdlog/fmt/bundled/printf.h new file mode 100644 index 0000000..6f2715d --- /dev/null +++ b/matching/include/spdlog/fmt/bundled/printf.h @@ -0,0 +1,855 @@ +// Formatting library for C++ +// +// 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::fill_n +#include <limits> // std::numeric_limits + +#include "ostream.h" + +FMT_BEGIN_NAMESPACE +namespace internal { + +// An iterator that produces a null terminator on *end. This simplifies parsing +// and allows comparing the performance of processing a null-terminated string +// vs string_view. +template <typename Char> +class null_terminating_iterator { + public: + typedef std::ptrdiff_t difference_type; + typedef Char value_type; + typedef const Char* pointer; + typedef const Char& reference; + typedef std::random_access_iterator_tag iterator_category; + + null_terminating_iterator() : ptr_(0), end_(0) {} + + FMT_CONSTEXPR null_terminating_iterator(const Char *ptr, const Char *end) + : ptr_(ptr), end_(end) {} + + template <typename Range> + FMT_CONSTEXPR explicit null_terminating_iterator(const Range &r) + : ptr_(r.begin()), end_(r.end()) {} + + FMT_CONSTEXPR null_terminating_iterator &operator=(const Char *ptr) { + assert(ptr <= end_); + ptr_ = ptr; + return *this; + } + + FMT_CONSTEXPR Char operator*() const { + return ptr_ != end_ ? *ptr_ : Char(); + } + + FMT_CONSTEXPR null_terminating_iterator operator++() { + ++ptr_; + return *this; + } + + FMT_CONSTEXPR null_terminating_iterator operator++(int) { + null_terminating_iterator result(*this); + ++ptr_; + return result; + } + + FMT_CONSTEXPR null_terminating_iterator operator--() { + --ptr_; + return *this; + } + + FMT_CONSTEXPR null_terminating_iterator operator+(difference_type n) { + return null_terminating_iterator(ptr_ + n, end_); + } + + FMT_CONSTEXPR null_terminating_iterator operator-(difference_type n) { + return null_terminating_iterator(ptr_ - n, end_); + } + + FMT_CONSTEXPR null_terminating_iterator operator+=(difference_type n) { + ptr_ += n; + return *this; + } + + FMT_CONSTEXPR difference_type operator-( + null_terminating_iterator other) const { + return ptr_ - other.ptr_; + } + + FMT_CONSTEXPR bool operator!=(null_terminating_iterator other) const { + return ptr_ != other.ptr_; + } + + bool operator>=(null_terminating_iterator other) const { + return ptr_ >= other.ptr_; + } + + // This should be a friend specialization pointer_from<Char> but the latter + // doesn't compile by gcc 5.1 due to a compiler bug. + template <typename CharT> + friend FMT_CONSTEXPR_DECL const CharT *pointer_from( + null_terminating_iterator<CharT> it); + + private: + const Char *ptr_; + const Char *end_; +}; + +template <typename T> +FMT_CONSTEXPR const T *pointer_from(const T *p) { return p; } + +template <typename Char> +FMT_CONSTEXPR const Char *pointer_from(null_terminating_iterator<Char> it) { + return it.ptr_; +} + +// DEPRECATED: Parses the input as an unsigned integer. This function assumes +// that the first character is a digit and presence of a non-digit character at +// the end. +// it: an iterator pointing to the beginning of the input range. +template <typename Iterator, typename ErrorHandler> +FMT_CONSTEXPR unsigned parse_nonnegative_int(Iterator &it, ErrorHandler &&eh) { + assert('0' <= *it && *it <= '9'); + if (*it == '0') { + ++it; + return 0; + } + unsigned value = 0; + // Convert to unsigned to prevent a warning. + unsigned max_int = (std::numeric_limits<int>::max)(); + unsigned big = max_int / 10; + do { + // Check for overflow. + if (value > big) { + value = max_int + 1; + break; + } + value = value * 10 + unsigned(*it - '0'); + // Workaround for MSVC "setup_exception stack overflow" error: + auto next = it; + ++next; + it = next; + } while ('0' <= *it && *it <= '9'); + if (value > max_int) + eh.on_error("number is too big"); + return value; +} + +// 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 = std::numeric_limits<int>::max(); + 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 <= std::numeric_limits<int>::max(); + } + static bool fits_in_int(int) { return true; } +}; + +class printf_precision_handler: public function<int> { + public: + template <typename T> + typename std::enable_if<std::is_integral<T>::value, int>::type + 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 static_cast<int>(value); + } + + template <typename T> + typename std::enable_if<!std::is_integral<T>::value, int>::type 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 function<bool> { + public: + template <typename T> + typename std::enable_if<std::is_integral<T>::value, bool>::type + operator()(T value) { return value == 0; } + + template <typename T> + typename std::enable_if<!std::is_integral<T>::value, bool>::type + operator()(T) { return false; } +}; + +template <typename T> +struct make_unsigned_or_bool : std::make_unsigned<T> {}; + +template <> +struct make_unsigned_or_bool<bool> { + typedef bool type; +}; + +template <typename T, typename Context> +class arg_converter: public function<void> { + private: + typedef typename Context::char_type Char; + + basic_format_arg<Context> &arg_; + typename Context::char_type type_; + + public: + arg_converter(basic_format_arg<Context> &arg, Char type) + : arg_(arg), type_(type) {} + + void operator()(bool value) { + if (type_ != 's') + operator()<bool>(value); + } + + template <typename U> + typename std::enable_if<std::is_integral<U>::value>::type + operator()(U value) { + bool is_signed = type_ == 'd' || type_ == 'i'; + typedef typename std::conditional< + std::is_same<T, void>::value, U, T>::type TargetType; + if (const_check(sizeof(TargetType) <= sizeof(int))) { + // Extra casts are used to silence warnings. + if (is_signed) { + arg_ = internal::make_arg<Context>( + static_cast<int>(static_cast<TargetType>(value))); + } else { + typedef typename make_unsigned_or_bool<TargetType>::type Unsigned; + arg_ = internal::make_arg<Context>( + static_cast<unsigned>(static_cast<Unsigned>(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_ = internal::make_arg<Context>(static_cast<long long>(value)); + } else { + arg_ = internal::make_arg<Context>( + static_cast<typename make_unsigned_or_bool<U>::type>(value)); + } + } + } + + template <typename U> + typename std::enable_if<!std::is_integral<U>::value>::type operator()(U) { + // No coversion 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: public function<void> { + private: + basic_format_arg<Context> &arg_; + + public: + explicit char_converter(basic_format_arg<Context> &arg) : arg_(arg) {} + + template <typename T> + typename std::enable_if<std::is_integral<T>::value>::type + operator()(T value) { + typedef typename Context::char_type Char; + arg_ = internal::make_arg<Context>(static_cast<Char>(value)); + } + + template <typename T> + typename std::enable_if<!std::is_integral<T>::value>::type operator()(T) { + // No coversion needed for non-integral types. + } +}; + +// 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: public function<unsigned> { + private: + typedef basic_format_specs<Char> format_specs; + + format_specs &spec_; + + public: + explicit printf_width_handler(format_specs &spec) : spec_(spec) {} + + template <typename T> + typename std::enable_if<std::is_integral<T>::value, unsigned>::type + operator()(T value) { + typedef typename internal::int_traits<T>::main_type UnsignedType; + UnsignedType width = static_cast<UnsignedType>(value); + if (internal::is_negative(value)) { + spec_.align_ = ALIGN_LEFT; + width = 0 - width; + } + unsigned int_max = std::numeric_limits<int>::max(); + if (width > int_max) + FMT_THROW(format_error("number is too big")); + return static_cast<unsigned>(width); + } + + template <typename T> + typename std::enable_if<!std::is_integral<T>::value, unsigned>::type + operator()(T) { + FMT_THROW(format_error("width is not integer")); + return 0; + } +}; + +template <typename Char, typename Context> +void printf(basic_buffer<Char> &buf, basic_string_view<Char> format, + basic_format_args<Context> args) { + Context(std::back_inserter(buf), format, args).format(); +} +} // namespace internal + +using internal::printf; // For printing into memory_buffer. + +template <typename Range> +class printf_arg_formatter; + +template < + typename OutputIt, typename Char, + typename ArgFormatter = + printf_arg_formatter<back_insert_range<internal::basic_buffer<Char>>>> +class basic_printf_context; + +/** + \rst + The ``printf`` argument formatter. + \endrst + */ +template <typename Range> +class printf_arg_formatter: + public internal::function< + typename internal::arg_formatter_base<Range>::iterator>, + public internal::arg_formatter_base<Range> { + private: + typedef typename Range::value_type char_type; + typedef decltype(internal::declval<Range>().begin()) iterator; + typedef internal::arg_formatter_base<Range> base; + typedef basic_printf_context<iterator, char_type> context_type; + + context_type &context_; + + void write_null_pointer(char) { + this->spec()->type = 0; + this->write("(nil)"); + } + + void write_null_pointer(wchar_t) { + this->spec()->type = 0; + this->write(L"(nil)"); + } + + public: + typedef typename base::format_specs format_specs; + + /** + \rst + Constructs an argument formatter object. + *buffer* is a reference to the output buffer and *spec* contains format + specifier information for standard argument types. + \endrst + */ + printf_arg_formatter(internal::basic_buffer<char_type> &buffer, + format_specs &spec, context_type &ctx) + : base(back_insert_range<internal::basic_buffer<char_type>>(buffer), &spec, + ctx.locale()), + context_(ctx) {} + + template <typename T> + typename std::enable_if<std::is_integral<T>::value, iterator>::type + 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_spec = *this->spec(); + if (fmt_spec.type != 's') + return base::operator()(value ? 1 : 0); + fmt_spec.type = 0; + this->write(value != 0); + } else if (std::is_same<T, char_type>::value) { + format_specs &fmt_spec = *this->spec(); + if (fmt_spec.type && fmt_spec.type != 'c') + return (*this)(static_cast<int>(value)); + fmt_spec.flags = 0; + fmt_spec.align_ = ALIGN_RIGHT; + return base::operator()(value); + } else { + return base::operator()(value); + } + return this->out(); + } + + template <typename T> + typename std::enable_if<std::is_floating_point<T>::value, iterator>::type + 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->spec()->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->spec()->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->spec()->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_); + return this->out(); + } +}; + +template <typename T> +struct printf_formatter { + 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()) { + internal::format_value(internal::get_container(ctx.out()), value); + return ctx.out(); + } +}; + +/** This template formats data and writes the output to a writer. */ +template <typename OutputIt, typename Char, typename ArgFormatter> +class basic_printf_context : + // Inherit publicly as a workaround for the icc bug + // https://software.intel.com/en-us/forums/intel-c-compiler/topic/783476. + public internal::context_base< + OutputIt, basic_printf_context<OutputIt, Char, ArgFormatter>, Char> { + public: + /** The character type for the output. */ + typedef Char char_type; + + template <typename T> + struct formatter_type { typedef printf_formatter<T> type; }; + + private: + typedef internal::context_base<OutputIt, basic_printf_context, Char> base; + typedef typename base::format_arg format_arg; + typedef basic_format_specs<char_type> format_specs; + typedef internal::null_terminating_iterator<char_type> iterator; + + void parse_flags(format_specs &spec, iterator &it); + + // Returns the argument with specified index or, if arg_index is equal + // to the maximum unsigned value, the next argument. + format_arg get_arg( + iterator it, + unsigned arg_index = (std::numeric_limits<unsigned>::max)()); + + // Parses argument index, flags and width and returns the argument index. + unsigned parse_header(iterator &it, format_specs &spec); + + public: + /** + \rst + Constructs a ``printf_context`` object. References to the arguments and + the writer 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) + : base(out, format_str, args) {} + + using base::parse_context; + using base::out; + using base::advance_to; + + /** Formats stored arguments and writes the output to the range. */ + void format(); +}; + +template <typename OutputIt, typename Char, typename AF> +void basic_printf_context<OutputIt, Char, AF>::parse_flags( + format_specs &spec, iterator &it) { + for (;;) { + switch (*it++) { + case '-': + spec.align_ = ALIGN_LEFT; + break; + case '+': + spec.flags |= SIGN_FLAG | PLUS_FLAG; + break; + case '0': + spec.fill_ = '0'; + break; + case ' ': + spec.flags |= SIGN_FLAG; + break; + case '#': + spec.flags |= HASH_FLAG; + break; + default: + --it; + return; + } + } +} + +template <typename OutputIt, typename Char, typename AF> +typename basic_printf_context<OutputIt, Char, AF>::format_arg + basic_printf_context<OutputIt, Char, AF>::get_arg( + iterator it, unsigned arg_index) { + (void)it; + if (arg_index == std::numeric_limits<unsigned>::max()) + return this->do_get_arg(this->parse_context().next_arg_id()); + return base::get_arg(arg_index - 1); +} + +template <typename OutputIt, typename Char, typename AF> +unsigned basic_printf_context<OutputIt, Char, AF>::parse_header( + iterator &it, format_specs &spec) { + unsigned arg_index = std::numeric_limits<unsigned>::max(); + char_type c = *it; + if (c >= '0' && c <= '9') { + // Parse an argument index (if followed by '$') or a width possibly + // preceded with '0' flag(s). + internal::error_handler eh; + unsigned value = parse_nonnegative_int(it, eh); + if (*it == '$') { // value is an argument index + ++it; + arg_index = value; + } else { + if (c == '0') + spec.fill_ = '0'; + if (value != 0) { + // Nonzero value means that we parsed width and don't need to + // parse it or flags again, so return now. + spec.width_ = value; + return arg_index; + } + } + } + parse_flags(spec, it); + // Parse width. + if (*it >= '0' && *it <= '9') { + internal::error_handler eh; + spec.width_ = parse_nonnegative_int(it, eh); + } else if (*it == '*') { + ++it; + spec.width_ = visit_format_arg( + internal::printf_width_handler<char_type>(spec), get_arg(it)); + } + return arg_index; +} + +template <typename OutputIt, typename Char, typename AF> +void basic_printf_context<OutputIt, Char, AF>::format() { + auto &buffer = internal::get_container(this->out()); + auto start = iterator(this->parse_context()); + auto it = start; + using internal::pointer_from; + while (*it) { + char_type c = *it++; + if (c != '%') continue; + if (*it == c) { + buffer.append(pointer_from(start), pointer_from(it)); + start = ++it; + continue; + } + buffer.append(pointer_from(start), pointer_from(it) - 1); + + format_specs spec; + spec.align_ = ALIGN_RIGHT; + + // Parse argument index, flags and width. + unsigned arg_index = parse_header(it, spec); + + // Parse precision. + if (*it == '.') { + ++it; + if ('0' <= *it && *it <= '9') { + internal::error_handler eh; + spec.precision = static_cast<int>(parse_nonnegative_int(it, eh)); + } else if (*it == '*') { + ++it; + spec.precision = + visit_format_arg(internal::printf_precision_handler(), get_arg(it)); + } else { + spec.precision = 0; + } + } + + format_arg arg = get_arg(it, arg_index); + if (spec.has(HASH_FLAG) && visit_format_arg(internal::is_zero_int(), arg)) + spec.flags = static_cast<uint_least8_t>(spec.flags & (~internal::to_unsigned<int>(HASH_FLAG))); + if (spec.fill_ == '0') { + if (arg.is_arithmetic()) + spec.align_ = ALIGN_NUMERIC; + else + spec.fill_ = ' '; // Ignore '0' flag for non-numeric types. + } + + // Parse length and convert the argument to the required type. + using internal::convert_arg; + switch (*it++) { + case 'h': + if (*it == 'h') + convert_arg<signed char>(arg, *++it); + else + convert_arg<short>(arg, *it); + break; + case 'l': + if (*it == 'l') + convert_arg<long long>(arg, *++it); + else + convert_arg<long>(arg, *it); + break; + case 'j': + convert_arg<intmax_t>(arg, *it); + break; + case 'z': + convert_arg<std::size_t>(arg, *it); + break; + case 't': + convert_arg<std::ptrdiff_t>(arg, *it); + 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, *it); + } + + // Parse type. + if (!*it) + FMT_THROW(format_error("invalid format string")); + spec.type = static_cast<char>(*it++); + if (arg.is_integral()) { + // Normalize type. + switch (spec.type) { + case 'i': case 'u': + spec.type = 'd'; + break; + case 'c': + // TODO: handle wchar_t better? + visit_format_arg( + internal::char_converter<basic_printf_context>(arg), arg); + break; + } + } + + start = it; + + // Format argument. + visit_format_arg(AF(buffer, spec, *this), arg); + } + buffer.append(pointer_from(start), pointer_from(it)); +} + +template <typename Buffer> +struct basic_printf_context_t { + typedef basic_printf_context< + std::back_insert_iterator<Buffer>, typename Buffer::value_type> type; +}; + +typedef basic_printf_context_t<internal::buffer>::type printf_context; +typedef basic_printf_context_t<internal::wbuffer>::type wprintf_context; + +typedef basic_format_args<printf_context> printf_args; +typedef basic_format_args<wprintf_context> wprintf_args; + +/** + \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 = FMT_CHAR(S)> +inline std::basic_string<Char> +vsprintf(const S &format, + basic_format_args<typename basic_printf_context_t< + internal::basic_buffer<Char>>::type> args) { + basic_memory_buffer<Char> buffer; + printf(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> +inline FMT_ENABLE_IF_T( + internal::is_string<S>::value, std::basic_string<FMT_CHAR(S)>) + sprintf(const S &format, const Args & ... args) { + internal::check_format_string<Args...>(format); + typedef internal::basic_buffer<FMT_CHAR(S)> buffer; + typedef typename basic_printf_context_t<buffer>::type context; + format_arg_store<context, Args...> as{ args... }; + return vsprintf(to_string_view(format), + basic_format_args<context>(as)); +} + +template <typename S, typename Char = FMT_CHAR(S)> +inline int vfprintf(std::FILE *f, const S &format, + basic_format_args<typename basic_printf_context_t< + internal::basic_buffer<Char>>::type> args) { + basic_memory_buffer<Char> buffer; + printf(buffer, to_string_view(format), args); + std::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> +inline FMT_ENABLE_IF_T(internal::is_string<S>::value, int) + fprintf(std::FILE *f, const S &format, const Args & ... args) { + internal::check_format_string<Args...>(format); + typedef internal::basic_buffer<FMT_CHAR(S)> buffer; + typedef typename basic_printf_context_t<buffer>::type context; + format_arg_store<context, Args...> as{ args... }; + return vfprintf(f, to_string_view(format), + basic_format_args<context>(as)); +} + +template <typename S, typename Char = FMT_CHAR(S)> +inline int vprintf(const S &format, + basic_format_args<typename basic_printf_context_t< + internal::basic_buffer<Char>>::type> 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> +inline FMT_ENABLE_IF_T(internal::is_string<S>::value, int) + printf(const S &format_str, const Args & ... args) { + internal::check_format_string<Args...>(format_str); + typedef internal::basic_buffer<FMT_CHAR(S)> buffer; + typedef typename basic_printf_context_t<buffer>::type context; + format_arg_store<context, Args...> as{ args... }; + return vprintf(to_string_view(format_str), + basic_format_args<context>(as)); +} + +template <typename S, typename Char = FMT_CHAR(S)> +inline int vfprintf(std::basic_ostream<Char> &os, + const S &format, + basic_format_args<typename basic_printf_context_t< + internal::basic_buffer<Char>>::type> args) { + basic_memory_buffer<Char> buffer; + printf(buffer, to_string_view(format), args); + internal::write(os, buffer); + return static_cast<int>(buffer.size()); +} + +/** + \rst + Prints formatted data to the stream *os*. + + **Example**:: + + fmt::fprintf(cerr, "Don't %s!", "panic"); + \endrst + */ +template <typename S, typename... Args> +inline FMT_ENABLE_IF_T(internal::is_string<S>::value, int) + fprintf(std::basic_ostream<FMT_CHAR(S)> &os, + const S &format_str, const Args & ... args) { + internal::check_format_string<Args...>(format_str); + typedef internal::basic_buffer<FMT_CHAR(S)> buffer; + typedef typename basic_printf_context_t<buffer>::type context; + format_arg_store<context, Args...> as{ args... }; + return vfprintf(os, to_string_view(format_str), + basic_format_args<context>(as)); +} +FMT_END_NAMESPACE + +#endif // FMT_PRINTF_H_ |