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authorJörg Frings-Fürst <debian@jff-webhosting.net>2018-07-11 07:33:08 +0200
committerJörg Frings-Fürst <debian@jff-webhosting.net>2018-07-11 07:33:08 +0200
commit621f4acf1406e51eaf5d9429c46625e6f5fde98e (patch)
tree0fe1fd92a0502602f54b2bf12a8c247ef575d00f /lib/spdlog/fmt/bundled/format.h
parent25d4e8d5ee396a852568b7ae1c15971a9da409db (diff)
parent5aa4b715375b173e9c24363f977883786b05cd6d (diff)
Merge branch 'release/debian/2.0.0-1'debian/2.0.0-1
Diffstat (limited to 'lib/spdlog/fmt/bundled/format.h')
-rw-r--r--lib/spdlog/fmt/bundled/format.h4920
1 files changed, 4920 insertions, 0 deletions
diff --git a/lib/spdlog/fmt/bundled/format.h b/lib/spdlog/fmt/bundled/format.h
new file mode 100644
index 0000000..b4295cd
--- /dev/null
+++ b/lib/spdlog/fmt/bundled/format.h
@@ -0,0 +1,4920 @@
+/*
+ Formatting library for C++
+
+ Copyright (c) 2012 - 2016, Victor Zverovich
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+
+ 1. Redistributions of source code must retain the above copyright notice, this
+ list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright notice,
+ this list of conditions and the following disclaimer in the documentation
+ and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef FMT_FORMAT_H_
+#define FMT_FORMAT_H_
+
+#define FMT_INCLUDE
+#include <cassert>
+#include <clocale>
+#include <cmath>
+#include <cstdio>
+#include <cstring>
+#include <limits>
+#include <memory>
+#include <stdexcept>
+#include <string>
+#include <utility> // for std::pair
+#include <vector>
+#undef FMT_INCLUDE
+
+// The fmt library version in the form major * 10000 + minor * 100 + patch.
+#define FMT_VERSION 40100
+
+#if defined(__has_include)
+#define FMT_HAS_INCLUDE(x) __has_include(x)
+#else
+#define FMT_HAS_INCLUDE(x) 0
+#endif
+
+#if (FMT_HAS_INCLUDE(<string_view>) && __cplusplus > 201402L) || (defined(_MSVC_LANG) && _MSVC_LANG > 201402L && _MSC_VER >= 1910)
+#include <string_view>
+#define FMT_HAS_STRING_VIEW 1
+#else
+#define FMT_HAS_STRING_VIEW 0
+#endif
+
+#if defined _SECURE_SCL && _SECURE_SCL
+#define FMT_SECURE_SCL _SECURE_SCL
+#else
+#define FMT_SECURE_SCL 0
+#endif
+
+#if FMT_SECURE_SCL
+#include <iterator>
+#endif
+
+#ifdef _MSC_VER
+#define FMT_MSC_VER _MSC_VER
+#else
+#define FMT_MSC_VER 0
+#endif
+
+#if FMT_MSC_VER && FMT_MSC_VER <= 1500
+typedef unsigned __int32 uint32_t;
+typedef unsigned __int64 uint64_t;
+typedef __int64 intmax_t;
+#else
+#include <stdint.h>
+#endif
+
+#if !defined(FMT_HEADER_ONLY) && defined(_WIN32)
+#ifdef FMT_EXPORT
+#define FMT_API __declspec(dllexport)
+#elif defined(FMT_SHARED)
+#define FMT_API __declspec(dllimport)
+#endif
+#endif
+#ifndef FMT_API
+#define FMT_API
+#endif
+
+#ifdef __GNUC__
+#define FMT_GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__)
+#define FMT_GCC_EXTENSION __extension__
+#if FMT_GCC_VERSION >= 406
+#pragma GCC diagnostic push
+// Disable the warning about "long long" which is sometimes reported even
+// when using __extension__.
+#pragma GCC diagnostic ignored "-Wlong-long"
+// Disable the warning about declaration shadowing because it affects too
+// many valid cases.
+#pragma GCC diagnostic ignored "-Wshadow"
+// Disable the warning about implicit conversions that may change the sign of
+// an integer; silencing it otherwise would require many explicit casts.
+#pragma GCC diagnostic ignored "-Wsign-conversion"
+#endif
+#if __cplusplus >= 201103L || defined __GXX_EXPERIMENTAL_CXX0X__
+#define FMT_HAS_GXX_CXX11 1
+#endif
+#else
+#define FMT_GCC_VERSION 0
+#define FMT_GCC_EXTENSION
+#define FMT_HAS_GXX_CXX11 0
+#endif
+
+#if defined(__INTEL_COMPILER)
+#define FMT_ICC_VERSION __INTEL_COMPILER
+#elif defined(__ICL)
+#define FMT_ICC_VERSION __ICL
+#endif
+
+#if defined(__clang__) && !defined(FMT_ICC_VERSION)
+#define FMT_CLANG_VERSION (__clang_major__ * 100 + __clang_minor__)
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdocumentation-unknown-command"
+#pragma clang diagnostic ignored "-Wpadded"
+#endif
+
+#ifdef __GNUC_LIBSTD__
+#define FMT_GNUC_LIBSTD_VERSION (__GNUC_LIBSTD__ * 100 + __GNUC_LIBSTD_MINOR__)
+#endif
+
+#ifdef __has_feature
+#define FMT_HAS_FEATURE(x) __has_feature(x)
+#else
+#define FMT_HAS_FEATURE(x) 0
+#endif
+
+#ifdef __has_builtin
+#define FMT_HAS_BUILTIN(x) __has_builtin(x)
+#else
+#define FMT_HAS_BUILTIN(x) 0
+#endif
+
+#ifdef __has_cpp_attribute
+#define FMT_HAS_CPP_ATTRIBUTE(x) __has_cpp_attribute(x)
+#else
+#define FMT_HAS_CPP_ATTRIBUTE(x) 0
+#endif
+
+#if FMT_HAS_CPP_ATTRIBUTE(maybe_unused)
+#define FMT_HAS_CXX17_ATTRIBUTE_MAYBE_UNUSED
+// VC++ 1910 support /std: option and that will set _MSVC_LANG macro
+// Clang with Microsoft CodeGen doesn't define _MSVC_LANG macro
+#elif defined(_MSVC_LANG) && _MSVC_LANG > 201402 && _MSC_VER >= 1910
+#define FMT_HAS_CXX17_ATTRIBUTE_MAYBE_UNUSED
+#endif
+
+#ifdef FMT_HAS_CXX17_ATTRIBUTE_MAYBE_UNUSED
+#define FMT_MAYBE_UNUSED [[maybe_unused]]
+// g++/clang++ also support [[gnu::unused]]. However, we don't use it.
+#elif defined(__GNUC__)
+#define FMT_MAYBE_UNUSED __attribute__((unused))
+#else
+#define FMT_MAYBE_UNUSED
+#endif
+
+// Use the compiler's attribute noreturn
+#if defined(__MINGW32__) || defined(__MINGW64__)
+#define FMT_NORETURN __attribute__((noreturn))
+#elif FMT_HAS_CPP_ATTRIBUTE(noreturn) && __cplusplus >= 201103L
+#define FMT_NORETURN [[noreturn]]
+#else
+#define FMT_NORETURN
+#endif
+
+#ifndef FMT_USE_VARIADIC_TEMPLATES
+// Variadic templates are available in GCC since version 4.4
+// (http://gcc.gnu.org/projects/cxx0x.html) and in Visual C++
+// since version 2013.
+#define FMT_USE_VARIADIC_TEMPLATES \
+ (FMT_HAS_FEATURE(cxx_variadic_templates) || (FMT_GCC_VERSION >= 404 && FMT_HAS_GXX_CXX11) || FMT_MSC_VER >= 1800)
+#endif
+
+#ifndef FMT_USE_RVALUE_REFERENCES
+// Don't use rvalue references when compiling with clang and an old libstdc++
+// as the latter doesn't provide std::move.
+#if defined(FMT_GNUC_LIBSTD_VERSION) && FMT_GNUC_LIBSTD_VERSION <= 402
+#define FMT_USE_RVALUE_REFERENCES 0
+#else
+#define FMT_USE_RVALUE_REFERENCES \
+ (FMT_HAS_FEATURE(cxx_rvalue_references) || (FMT_GCC_VERSION >= 403 && FMT_HAS_GXX_CXX11) || FMT_MSC_VER >= 1600)
+#endif
+#endif
+
+#if __cplusplus >= 201103L || FMT_MSC_VER >= 1700
+#define FMT_USE_ALLOCATOR_TRAITS 1
+#else
+#define FMT_USE_ALLOCATOR_TRAITS 0
+#endif
+
+// Check if exceptions are disabled.
+#if defined(__GNUC__) && !defined(__EXCEPTIONS)
+#define FMT_EXCEPTIONS 0
+#endif
+#if FMT_MSC_VER && !_HAS_EXCEPTIONS
+#define FMT_EXCEPTIONS 0
+#endif
+#ifndef FMT_EXCEPTIONS
+#define FMT_EXCEPTIONS 1
+#endif
+
+#ifndef FMT_THROW
+#if FMT_EXCEPTIONS
+#define FMT_THROW(x) throw x
+#else
+#define FMT_THROW(x) assert(false)
+#endif
+#endif
+
+// Define FMT_USE_NOEXCEPT to make fmt use noexcept (C++11 feature).
+#ifndef FMT_USE_NOEXCEPT
+#define FMT_USE_NOEXCEPT 0
+#endif
+
+#if FMT_USE_NOEXCEPT || FMT_HAS_FEATURE(cxx_noexcept) || (FMT_GCC_VERSION >= 408 && FMT_HAS_GXX_CXX11) || FMT_MSC_VER >= 1900
+#define FMT_DETECTED_NOEXCEPT noexcept
+#else
+#define FMT_DETECTED_NOEXCEPT throw()
+#endif
+
+#ifndef FMT_NOEXCEPT
+#if FMT_EXCEPTIONS
+#define FMT_NOEXCEPT FMT_DETECTED_NOEXCEPT
+#else
+#define FMT_NOEXCEPT
+#endif
+#endif
+
+// This is needed because GCC still uses throw() in its headers when exceptions
+// are disabled.
+#if FMT_GCC_VERSION
+#define FMT_DTOR_NOEXCEPT FMT_DETECTED_NOEXCEPT
+#else
+#define FMT_DTOR_NOEXCEPT FMT_NOEXCEPT
+#endif
+
+#ifndef FMT_OVERRIDE
+#if (defined(FMT_USE_OVERRIDE) && FMT_USE_OVERRIDE) || FMT_HAS_FEATURE(cxx_override) || (FMT_GCC_VERSION >= 408 && FMT_HAS_GXX_CXX11) || \
+ FMT_MSC_VER >= 1900
+#define FMT_OVERRIDE override
+#else
+#define FMT_OVERRIDE
+#endif
+#endif
+
+#ifndef FMT_NULL
+#if FMT_HAS_FEATURE(cxx_nullptr) || (FMT_GCC_VERSION >= 408 && FMT_HAS_GXX_CXX11) || FMT_MSC_VER >= 1600
+#define FMT_NULL nullptr
+#else
+#define FMT_NULL NULL
+#endif
+#endif
+
+// A macro to disallow the copy constructor and operator= functions
+// This should be used in the private: declarations for a class
+#ifndef FMT_USE_DELETED_FUNCTIONS
+#define FMT_USE_DELETED_FUNCTIONS 0
+#endif
+
+#if FMT_USE_DELETED_FUNCTIONS || FMT_HAS_FEATURE(cxx_deleted_functions) || (FMT_GCC_VERSION >= 404 && FMT_HAS_GXX_CXX11) || \
+ FMT_MSC_VER >= 1800
+#define FMT_DELETED_OR_UNDEFINED = delete
+#define FMT_DISALLOW_COPY_AND_ASSIGN(TypeName) \
+ TypeName(const TypeName &) = delete; \
+ TypeName &operator=(const TypeName &) = delete
+#else
+#define FMT_DELETED_OR_UNDEFINED
+#define FMT_DISALLOW_COPY_AND_ASSIGN(TypeName) \
+ TypeName(const TypeName &); \
+ TypeName &operator=(const TypeName &)
+#endif
+
+#ifndef FMT_USE_DEFAULTED_FUNCTIONS
+#define FMT_USE_DEFAULTED_FUNCTIONS 0
+#endif
+
+#ifndef FMT_DEFAULTED_COPY_CTOR
+#if FMT_USE_DEFAULTED_FUNCTIONS || FMT_HAS_FEATURE(cxx_defaulted_functions) || (FMT_GCC_VERSION >= 404 && FMT_HAS_GXX_CXX11) || \
+ FMT_MSC_VER >= 1800
+#define FMT_DEFAULTED_COPY_CTOR(TypeName) TypeName(const TypeName &) = default;
+#else
+#define FMT_DEFAULTED_COPY_CTOR(TypeName)
+#endif
+#endif
+
+#ifndef FMT_USE_USER_DEFINED_LITERALS
+// All compilers which support UDLs also support variadic templates. This
+// makes the fmt::literals implementation easier. However, an explicit check
+// for variadic templates is added here just in case.
+// For Intel's compiler both it and the system gcc/msc must support UDLs.
+#if FMT_USE_VARIADIC_TEMPLATES && FMT_USE_RVALUE_REFERENCES && \
+ (FMT_HAS_FEATURE(cxx_user_literals) || (FMT_GCC_VERSION >= 407 && FMT_HAS_GXX_CXX11) || FMT_MSC_VER >= 1900) && \
+ (!defined(FMT_ICC_VERSION) || FMT_ICC_VERSION >= 1500)
+#define FMT_USE_USER_DEFINED_LITERALS 1
+#else
+#define FMT_USE_USER_DEFINED_LITERALS 0
+#endif
+#endif
+
+#ifndef FMT_USE_EXTERN_TEMPLATES
+#define FMT_USE_EXTERN_TEMPLATES (FMT_CLANG_VERSION >= 209 || (FMT_GCC_VERSION >= 303 && FMT_HAS_GXX_CXX11))
+#endif
+
+#ifdef FMT_HEADER_ONLY
+// If header only do not use extern templates.
+#undef FMT_USE_EXTERN_TEMPLATES
+#define FMT_USE_EXTERN_TEMPLATES 0
+#endif
+
+#ifndef FMT_ASSERT
+#define FMT_ASSERT(condition, message) assert((condition) && message)
+#endif
+
+// __builtin_clz is broken in clang with Microsoft CodeGen:
+// https://github.com/fmtlib/fmt/issues/519
+#ifndef _MSC_VER
+#if FMT_GCC_VERSION >= 400 || FMT_HAS_BUILTIN(__builtin_clz)
+#define FMT_BUILTIN_CLZ(n) __builtin_clz(n)
+#endif
+
+#if FMT_GCC_VERSION >= 400 || FMT_HAS_BUILTIN(__builtin_clzll)
+#define FMT_BUILTIN_CLZLL(n) __builtin_clzll(n)
+#endif
+#endif
+
+// Some compilers masquerade as both MSVC and GCC-likes or
+// otherwise support __builtin_clz and __builtin_clzll, so
+// only define FMT_BUILTIN_CLZ using the MSVC intrinsics
+// if the clz and clzll builtins are not available.
+#if FMT_MSC_VER && !defined(FMT_BUILTIN_CLZLL) && !defined(_MANAGED)
+#include <intrin.h> // _BitScanReverse, _BitScanReverse64
+
+namespace fmt {
+namespace internal {
+// avoid Clang with Microsoft CodeGen's -Wunknown-pragmas warning
+#ifndef __clang__
+#pragma intrinsic(_BitScanReverse)
+#endif
+inline uint32_t clz(uint32_t x)
+{
+ unsigned long r = 0;
+ _BitScanReverse(&r, x);
+
+ assert(x != 0);
+ // Static analysis complains about using uninitialized data
+ // "r", but the only way that can happen is if "x" is 0,
+ // which the callers guarantee to not happen.
+#pragma warning(suppress : 6102)
+ return 31 - r;
+}
+#define FMT_BUILTIN_CLZ(n) fmt::internal::clz(n)
+
+// avoid Clang with Microsoft CodeGen's -Wunknown-pragmas warning
+#if defined(_WIN64) && !defined(__clang__)
+#pragma intrinsic(_BitScanReverse64)
+#endif
+
+inline uint32_t clzll(uint64_t x)
+{
+ unsigned long r = 0;
+#ifdef _WIN64
+ _BitScanReverse64(&r, x);
+#else
+ // Scan the high 32 bits.
+ if (_BitScanReverse(&r, static_cast<uint32_t>(x >> 32)))
+ return 63 - (r + 32);
+
+ // Scan the low 32 bits.
+ _BitScanReverse(&r, static_cast<uint32_t>(x));
+#endif
+
+ assert(x != 0);
+ // Static analysis complains about using uninitialized data
+ // "r", but the only way that can happen is if "x" is 0,
+ // which the callers guarantee to not happen.
+#pragma warning(suppress : 6102)
+ return 63 - r;
+}
+#define FMT_BUILTIN_CLZLL(n) fmt::internal::clzll(n)
+} // namespace internal
+} // namespace fmt
+#endif
+
+namespace fmt {
+namespace internal {
+struct DummyInt
+{
+ int data[2];
+ operator int() const
+ {
+ return 0;
+ }
+};
+typedef std::numeric_limits<fmt::internal::DummyInt> FPUtil;
+
+// Dummy implementations of system functions such as signbit and ecvt called
+// if the latter are not available.
+inline DummyInt signbit(...)
+{
+ return DummyInt();
+}
+inline DummyInt _ecvt_s(...)
+{
+ return DummyInt();
+}
+inline DummyInt isinf(...)
+{
+ return DummyInt();
+}
+inline DummyInt _finite(...)
+{
+ return DummyInt();
+}
+inline DummyInt isnan(...)
+{
+ return DummyInt();
+}
+inline DummyInt _isnan(...)
+{
+ return DummyInt();
+}
+
+// A helper function to suppress bogus "conditional expression is constant"
+// warnings.
+template<typename T>
+inline T const_check(T value)
+{
+ return value;
+}
+} // namespace internal
+} // namespace fmt
+
+namespace std {
+// Standard permits specialization of std::numeric_limits. This specialization
+// is used to resolve ambiguity between isinf and std::isinf in glibc:
+// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=48891
+// and the same for isnan and signbit.
+template<>
+class numeric_limits<fmt::internal::DummyInt> : public std::numeric_limits<int>
+{
+public:
+ // Portable version of isinf.
+ template<typename T>
+ static bool isinfinity(T x)
+ {
+ using namespace fmt::internal;
+ // The resolution "priority" is:
+ // isinf macro > std::isinf > ::isinf > fmt::internal::isinf
+ if (const_check(sizeof(isinf(x)) == sizeof(bool) || sizeof(isinf(x)) == sizeof(int)))
+ {
+ return isinf(x) != 0;
+ }
+ return !_finite(static_cast<double>(x));
+ }
+
+ // Portable version of isnan.
+ template<typename T>
+ static bool isnotanumber(T x)
+ {
+ using namespace fmt::internal;
+ if (const_check(sizeof(isnan(x)) == sizeof(bool) || sizeof(isnan(x)) == sizeof(int)))
+ {
+ return isnan(x) != 0;
+ }
+ return _isnan(static_cast<double>(x)) != 0;
+ }
+
+ // Portable version of signbit.
+ static bool isnegative(double x)
+ {
+ using namespace fmt::internal;
+ if (const_check(sizeof(signbit(x)) == sizeof(bool) || sizeof(signbit(x)) == sizeof(int)))
+ {
+ return signbit(x) != 0;
+ }
+ if (x < 0)
+ return true;
+ if (!isnotanumber(x))
+ return false;
+ int dec = 0, sign = 0;
+ char buffer[2]; // The buffer size must be >= 2 or _ecvt_s will fail.
+ _ecvt_s(buffer, sizeof(buffer), x, 0, &dec, &sign);
+ return sign != 0;
+ }
+};
+} // namespace std
+
+namespace fmt {
+
+// Fix the warning about long long on older versions of GCC
+// that don't support the diagnostic pragma.
+FMT_GCC_EXTENSION typedef long long LongLong;
+FMT_GCC_EXTENSION typedef unsigned long long ULongLong;
+
+#if FMT_USE_RVALUE_REFERENCES
+using std::move;
+#endif
+
+template<typename Char>
+class BasicWriter;
+
+typedef BasicWriter<char> Writer;
+typedef BasicWriter<wchar_t> WWriter;
+
+template<typename Char>
+class ArgFormatter;
+
+struct FormatSpec;
+
+template<typename Impl, typename Char, typename Spec = fmt::FormatSpec>
+class BasicPrintfArgFormatter;
+
+template<typename CharType, typename ArgFormatter = fmt::ArgFormatter<CharType>>
+class BasicFormatter;
+
+/**
+ \rst
+ A string reference. It can be constructed from a C string or
+ ``std::basic_string``.
+
+ You can use one of the following typedefs for common character types:
+
+ +------------+-------------------------+
+ | Type | Definition |
+ +============+=========================+
+ | StringRef | BasicStringRef<char> |
+ +------------+-------------------------+
+ | WStringRef | BasicStringRef<wchar_t> |
+ +------------+-------------------------+
+
+ This class is most useful as a parameter type to allow passing
+ different types of strings to a function, for example::
+
+ template <typename... Args>
+ std::string format(StringRef format_str, const Args & ... args);
+
+ format("{}", 42);
+ format(std::string("{}"), 42);
+ \endrst
+ */
+template<typename Char>
+class BasicStringRef
+{
+private:
+ const Char *data_;
+ std::size_t size_;
+
+public:
+ /** Constructs a string reference object from a C string and a size. */
+ BasicStringRef(const Char *s, std::size_t size)
+ : data_(s)
+ , size_(size)
+ {
+ }
+
+ /**
+ \rst
+ Constructs a string reference object from a C string computing
+ the size with ``std::char_traits<Char>::length``.
+ \endrst
+ */
+ BasicStringRef(const Char *s)
+ : data_(s)
+ , size_(std::char_traits<Char>::length(s))
+ {
+ }
+
+ /**
+ \rst
+ Constructs a string reference from a ``std::basic_string`` object.
+ \endrst
+ */
+ template<typename Allocator>
+ BasicStringRef(const std::basic_string<Char, std::char_traits<Char>, Allocator> &s)
+ : data_(s.c_str())
+ , size_(s.size())
+ {
+ }
+
+#if FMT_HAS_STRING_VIEW
+ /**
+ \rst
+ Constructs a string reference from a ``std::basic_string_view`` object.
+ \endrst
+ */
+ BasicStringRef(const std::basic_string_view<Char, std::char_traits<Char>> &s)
+ : data_(s.data())
+ , size_(s.size())
+ {
+ }
+
+ /**
+ \rst
+ Converts a string reference to an ``std::string_view`` object.
+ \endrst
+ */
+ explicit operator std::basic_string_view<Char>() const FMT_NOEXCEPT
+ {
+ return std::basic_string_view<Char>(data_, size_);
+ }
+#endif
+
+ /**
+ \rst
+ Converts a string reference to an ``std::string`` object.
+ \endrst
+ */
+ std::basic_string<Char> to_string() const
+ {
+ return std::basic_string<Char>(data_, size_);
+ }
+
+ /** Returns a pointer to the string data. */
+ const Char *data() const
+ {
+ return data_;
+ }
+
+ /** Returns the string size. */
+ std::size_t size() const
+ {
+ return size_;
+ }
+
+ // Lexicographically compare this string reference to other.
+ int compare(BasicStringRef other) const
+ {
+ std::size_t size = size_ < other.size_ ? size_ : other.size_;
+ int result = std::char_traits<Char>::compare(data_, other.data_, size);
+ if (result == 0)
+ result = size_ == other.size_ ? 0 : (size_ < other.size_ ? -1 : 1);
+ return result;
+ }
+
+ friend bool operator==(BasicStringRef lhs, BasicStringRef rhs)
+ {
+ return lhs.compare(rhs) == 0;
+ }
+ friend bool operator!=(BasicStringRef lhs, BasicStringRef rhs)
+ {
+ return lhs.compare(rhs) != 0;
+ }
+ friend bool operator<(BasicStringRef lhs, BasicStringRef rhs)
+ {
+ return lhs.compare(rhs) < 0;
+ }
+ friend bool operator<=(BasicStringRef lhs, BasicStringRef rhs)
+ {
+ return lhs.compare(rhs) <= 0;
+ }
+ friend bool operator>(BasicStringRef lhs, BasicStringRef rhs)
+ {
+ return lhs.compare(rhs) > 0;
+ }
+ friend bool operator>=(BasicStringRef lhs, BasicStringRef rhs)
+ {
+ return lhs.compare(rhs) >= 0;
+ }
+};
+
+typedef BasicStringRef<char> StringRef;
+typedef BasicStringRef<wchar_t> WStringRef;
+
+/**
+ \rst
+ A reference to a null terminated string. It can be constructed from a C
+ string or ``std::basic_string``.
+
+ You can use one of the following typedefs for common character types:
+
+ +-------------+--------------------------+
+ | Type | Definition |
+ +=============+==========================+
+ | CStringRef | BasicCStringRef<char> |
+ +-------------+--------------------------+
+ | WCStringRef | BasicCStringRef<wchar_t> |
+ +-------------+--------------------------+
+
+ This class is most useful as a parameter type to allow passing
+ different types of strings to a function, for example::
+
+ template <typename... Args>
+ std::string format(CStringRef format_str, const Args & ... args);
+
+ format("{}", 42);
+ format(std::string("{}"), 42);
+ \endrst
+ */
+template<typename Char>
+class BasicCStringRef
+{
+private:
+ const Char *data_;
+
+public:
+ /** Constructs a string reference object from a C string. */
+ BasicCStringRef(const Char *s)
+ : data_(s)
+ {
+ }
+
+ /**
+ \rst
+ Constructs a string reference from a ``std::basic_string`` object.
+ \endrst
+ */
+ template<typename Allocator>
+ BasicCStringRef(const std::basic_string<Char, std::char_traits<Char>, Allocator> &s)
+ : data_(s.c_str())
+ {
+ }
+
+ /** Returns the pointer to a C string. */
+ const Char *c_str() const
+ {
+ return data_;
+ }
+};
+
+typedef BasicCStringRef<char> CStringRef;
+typedef BasicCStringRef<wchar_t> WCStringRef;
+
+/** A formatting error such as invalid format string. */
+class FormatError : public std::runtime_error
+{
+public:
+ explicit FormatError(CStringRef message)
+ : std::runtime_error(message.c_str())
+ {
+ }
+ FormatError(const FormatError &ferr)
+ : std::runtime_error(ferr)
+ {
+ }
+ FMT_API ~FormatError() FMT_DTOR_NOEXCEPT FMT_OVERRIDE;
+};
+
+namespace internal {
+
+// MakeUnsigned<T>::Type gives an unsigned type corresponding to integer type T.
+template<typename T>
+struct MakeUnsigned
+{
+ typedef T Type;
+};
+
+#define FMT_SPECIALIZE_MAKE_UNSIGNED(T, U) \
+ template<> \
+ struct MakeUnsigned<T> \
+ { \
+ typedef U Type; \
+ }
+
+FMT_SPECIALIZE_MAKE_UNSIGNED(char, unsigned char);
+FMT_SPECIALIZE_MAKE_UNSIGNED(signed char, unsigned char);
+FMT_SPECIALIZE_MAKE_UNSIGNED(short, unsigned short);
+FMT_SPECIALIZE_MAKE_UNSIGNED(int, unsigned);
+FMT_SPECIALIZE_MAKE_UNSIGNED(long, unsigned long);
+FMT_SPECIALIZE_MAKE_UNSIGNED(LongLong, ULongLong);
+
+// Casts nonnegative integer to unsigned.
+template<typename Int>
+inline typename MakeUnsigned<Int>::Type to_unsigned(Int value)
+{
+ FMT_ASSERT(value >= 0, "negative value");
+ return static_cast<typename MakeUnsigned<Int>::Type>(value);
+}
+
+// The number of characters to store in the MemoryBuffer object itself
+// to avoid dynamic memory allocation.
+enum
+{
+ INLINE_BUFFER_SIZE = 500
+};
+
+#if FMT_SECURE_SCL
+// Use checked iterator to avoid warnings on MSVC.
+template<typename T>
+inline stdext::checked_array_iterator<T *> make_ptr(T *ptr, std::size_t size)
+{
+ return stdext::checked_array_iterator<T *>(ptr, size);
+}
+#else
+template<typename T>
+inline T *make_ptr(T *ptr, std::size_t)
+{
+ return ptr;
+}
+#endif
+} // namespace internal
+
+/**
+ \rst
+ A buffer supporting a subset of ``std::vector``'s operations.
+ \endrst
+ */
+template<typename T>
+class Buffer
+{
+private:
+ FMT_DISALLOW_COPY_AND_ASSIGN(Buffer);
+
+protected:
+ T *ptr_;
+ std::size_t size_;
+ std::size_t capacity_;
+
+ Buffer(T *ptr = FMT_NULL, std::size_t capacity = 0)
+ : ptr_(ptr)
+ , size_(0)
+ , capacity_(capacity)
+ {
+ }
+
+ /**
+ \rst
+ Increases the buffer capacity to hold at least *size* elements updating
+ ``ptr_`` and ``capacity_``.
+ \endrst
+ */
+ virtual void grow(std::size_t size) = 0;
+
+public:
+ virtual ~Buffer() {}
+
+ /** Returns the size of this buffer. */
+ std::size_t size() const
+ {
+ return size_;
+ }
+
+ /** Returns the capacity of this buffer. */
+ std::size_t capacity() const
+ {
+ return capacity_;
+ }
+
+ /**
+ Resizes the buffer. If T is a POD type new elements may not be initialized.
+ */
+ void resize(std::size_t new_size)
+ {
+ if (new_size > capacity_)
+ grow(new_size);
+ size_ = new_size;
+ }
+
+ /**
+ \rst
+ Reserves space to store at least *capacity* elements.
+ \endrst
+ */
+ void reserve(std::size_t capacity)
+ {
+ if (capacity > capacity_)
+ grow(capacity);
+ }
+
+ void clear() FMT_NOEXCEPT
+ {
+ size_ = 0;
+ }
+
+ void push_back(const T &value)
+ {
+ if (size_ == capacity_)
+ grow(size_ + 1);
+ ptr_[size_++] = value;
+ }
+
+ /** Appends data to the end of the buffer. */
+ template<typename U>
+ void append(const U *begin, const U *end);
+
+ T &operator[](std::size_t index)
+ {
+ return ptr_[index];
+ }
+ const T &operator[](std::size_t index) const
+ {
+ return ptr_[index];
+ }
+};
+
+template<typename T>
+template<typename U>
+void Buffer<T>::append(const U *begin, const U *end)
+{
+ FMT_ASSERT(end >= begin, "negative value");
+ std::size_t new_size = size_ + static_cast<std::size_t>(end - begin);
+ if (new_size > capacity_)
+ grow(new_size);
+ std::uninitialized_copy(begin, end, internal::make_ptr(ptr_, capacity_) + size_);
+ size_ = new_size;
+}
+
+namespace internal {
+
+// A memory buffer for trivially copyable/constructible types with the first
+// SIZE elements stored in the object itself.
+template<typename T, std::size_t SIZE, typename Allocator = std::allocator<T>>
+class MemoryBuffer : private Allocator, public Buffer<T>
+{
+private:
+ T data_[SIZE];
+
+ // Deallocate memory allocated by the buffer.
+ void deallocate()
+ {
+ if (this->ptr_ != data_)
+ Allocator::deallocate(this->ptr_, this->capacity_);
+ }
+
+protected:
+ void grow(std::size_t size) FMT_OVERRIDE;
+
+public:
+ explicit MemoryBuffer(const Allocator &alloc = Allocator())
+ : Allocator(alloc)
+ , Buffer<T>(data_, SIZE)
+ {
+ }
+ ~MemoryBuffer() FMT_OVERRIDE
+ {
+ deallocate();
+ }
+
+#if FMT_USE_RVALUE_REFERENCES
+private:
+ // Move data from other to this buffer.
+ void move(MemoryBuffer &other)
+ {
+ Allocator &this_alloc = *this, &other_alloc = other;
+ this_alloc = std::move(other_alloc);
+ this->size_ = other.size_;
+ this->capacity_ = other.capacity_;
+ if (other.ptr_ == other.data_)
+ {
+ this->ptr_ = data_;
+ std::uninitialized_copy(other.data_, other.data_ + this->size_, make_ptr(data_, this->capacity_));
+ }
+ else
+ {
+ this->ptr_ = other.ptr_;
+ // Set pointer to the inline array so that delete is not called
+ // when deallocating.
+ other.ptr_ = other.data_;
+ }
+ }
+
+public:
+ MemoryBuffer(MemoryBuffer &&other)
+ {
+ move(other);
+ }
+
+ MemoryBuffer &operator=(MemoryBuffer &&other)
+ {
+ assert(this != &other);
+ deallocate();
+ move(other);
+ return *this;
+ }
+#endif
+
+ // Returns a copy of the allocator associated with this buffer.
+ Allocator get_allocator() const
+ {
+ return *this;
+ }
+};
+
+template<typename T, std::size_t SIZE, typename Allocator>
+void MemoryBuffer<T, SIZE, Allocator>::grow(std::size_t size)
+{
+ std::size_t new_capacity = this->capacity_ + this->capacity_ / 2;
+ if (size > new_capacity)
+ new_capacity = size;
+#if FMT_USE_ALLOCATOR_TRAITS
+ T *new_ptr = std::allocator_traits<Allocator>::allocate(*this, new_capacity, FMT_NULL);
+#else
+ T *new_ptr = this->allocate(new_capacity, FMT_NULL);
+#endif
+ // The following code doesn't throw, so the raw pointer above doesn't leak.
+ std::uninitialized_copy(this->ptr_, this->ptr_ + this->size_, make_ptr(new_ptr, new_capacity));
+ std::size_t old_capacity = this->capacity_;
+ T *old_ptr = this->ptr_;
+ this->capacity_ = new_capacity;
+ this->ptr_ = new_ptr;
+ // deallocate may throw (at least in principle), but it doesn't matter since
+ // the buffer already uses the new storage and will deallocate it in case
+ // of exception.
+ if (old_ptr != data_)
+ Allocator::deallocate(old_ptr, old_capacity);
+}
+
+// A fixed-size buffer.
+template<typename Char>
+class FixedBuffer : public fmt::Buffer<Char>
+{
+public:
+ FixedBuffer(Char *array, std::size_t size)
+ : fmt::Buffer<Char>(array, size)
+ {
+ }
+
+protected:
+ FMT_API void grow(std::size_t size) FMT_OVERRIDE;
+};
+
+template<typename Char>
+class BasicCharTraits
+{
+public:
+#if FMT_SECURE_SCL
+ typedef stdext::checked_array_iterator<Char *> CharPtr;
+#else
+ typedef Char *CharPtr;
+#endif
+ static Char cast(int value)
+ {
+ return static_cast<Char>(value);
+ }
+};
+
+template<typename Char>
+class CharTraits;
+
+template<>
+class CharTraits<char> : public BasicCharTraits<char>
+{
+private:
+ // Conversion from wchar_t to char is not allowed.
+ static char convert(wchar_t);
+
+public:
+ static char convert(char value)
+ {
+ return value;
+ }
+
+ // Formats a floating-point number.
+ template<typename T>
+ FMT_API static int format_float(char *buffer, std::size_t size, const char *format, unsigned width, int precision, T value);
+};
+
+#if FMT_USE_EXTERN_TEMPLATES
+extern template int CharTraits<char>::format_float<double>(
+ char *buffer, std::size_t size, const char *format, unsigned width, int precision, double value);
+extern template int CharTraits<char>::format_float<long double>(
+ char *buffer, std::size_t size, const char *format, unsigned width, int precision, long double value);
+#endif
+
+template<>
+class CharTraits<wchar_t> : public BasicCharTraits<wchar_t>
+{
+public:
+ static wchar_t convert(char value)
+ {
+ return value;
+ }
+ static wchar_t convert(wchar_t value)
+ {
+ return value;
+ }
+
+ template<typename T>
+ FMT_API static int format_float(wchar_t *buffer, std::size_t size, const wchar_t *format, unsigned width, int precision, T value);
+};
+
+#if FMT_USE_EXTERN_TEMPLATES
+extern template int CharTraits<wchar_t>::format_float<double>(
+ wchar_t *buffer, std::size_t size, const wchar_t *format, unsigned width, int precision, double value);
+extern template int CharTraits<wchar_t>::format_float<long double>(
+ wchar_t *buffer, std::size_t size, const wchar_t *format, unsigned width, int precision, long double value);
+#endif
+
+// Checks if a number is negative - used to avoid warnings.
+template<bool IsSigned>
+struct SignChecker
+{
+ template<typename T>
+ static bool is_negative(T value)
+ {
+ return value < 0;
+ }
+};
+
+template<>
+struct SignChecker<false>
+{
+ template<typename T>
+ static bool is_negative(T)
+ {
+ return false;
+ }
+};
+
+// Returns true if value is negative, false otherwise.
+// Same as (value < 0) but doesn't produce warnings if T is an unsigned type.
+template<typename T>
+inline bool is_negative(T value)
+{
+ return SignChecker<std::numeric_limits<T>::is_signed>::is_negative(value);
+}
+
+// Selects uint32_t if FitsIn32Bits is true, uint64_t otherwise.
+template<bool FitsIn32Bits>
+struct TypeSelector
+{
+ typedef uint32_t Type;
+};
+
+template<>
+struct TypeSelector<false>
+{
+ typedef uint64_t Type;
+};
+
+template<typename T>
+struct IntTraits
+{
+ // Smallest of uint32_t and uint64_t that is large enough to represent
+ // all values of T.
+ typedef typename TypeSelector<std::numeric_limits<T>::digits <= 32>::Type MainType;
+};
+
+FMT_API FMT_NORETURN void report_unknown_type(char code, const char *type);
+
+// Static data is placed in this class template to allow header-only
+// configuration.
+template<typename T = void>
+struct FMT_API BasicData
+{
+ static const uint32_t POWERS_OF_10_32[];
+ static const uint64_t POWERS_OF_10_64[];
+ static const char DIGITS[];
+};
+
+#if FMT_USE_EXTERN_TEMPLATES
+extern template struct BasicData<void>;
+#endif
+
+typedef BasicData<> Data;
+
+#ifdef FMT_BUILTIN_CLZLL
+// Returns the number of decimal digits in n. Leading zeros are not counted
+// except for n == 0 in which case count_digits returns 1.
+inline unsigned count_digits(uint64_t n)
+{
+ // Based on http://graphics.stanford.edu/~seander/bithacks.html#IntegerLog10
+ // and the benchmark https://github.com/localvoid/cxx-benchmark-count-digits.
+ int t = (64 - FMT_BUILTIN_CLZLL(n | 1)) * 1233 >> 12;
+ return to_unsigned(t) - (n < Data::POWERS_OF_10_64[t]) + 1;
+}
+#else
+// Fallback version of count_digits used when __builtin_clz is not available.
+inline unsigned count_digits(uint64_t n)
+{
+ unsigned count = 1;
+ for (;;)
+ {
+ // Integer division is slow so do it for a group of four digits instead
+ // of for every digit. The idea comes from the talk by Alexandrescu
+ // "Three Optimization Tips for C++". See speed-test for a comparison.
+ if (n < 10)
+ return count;
+ if (n < 100)
+ return count + 1;
+ if (n < 1000)
+ return count + 2;
+ if (n < 10000)
+ return count + 3;
+ n /= 10000u;
+ count += 4;
+ }
+}
+#endif
+
+#ifdef FMT_BUILTIN_CLZ
+// Optional version of count_digits for better performance on 32-bit platforms.
+inline unsigned count_digits(uint32_t n)
+{
+ int t = (32 - FMT_BUILTIN_CLZ(n | 1)) * 1233 >> 12;
+ return to_unsigned(t) - (n < Data::POWERS_OF_10_32[t]) + 1;
+}
+#endif
+
+// A functor that doesn't add a thousands separator.
+struct NoThousandsSep
+{
+ template<typename Char>
+ void operator()(Char *)
+ {
+ }
+};
+
+// A functor that adds a thousands separator.
+class ThousandsSep
+{
+private:
+ fmt::StringRef sep_;
+
+ // Index of a decimal digit with the least significant digit having index 0.
+ unsigned digit_index_;
+
+public:
+ explicit ThousandsSep(fmt::StringRef sep)
+ : sep_(sep)
+ , digit_index_(0)
+ {
+ }
+
+ template<typename Char>
+ void operator()(Char *&buffer)
+ {
+ if (++digit_index_ % 3 != 0)
+ return;
+ buffer -= sep_.size();
+ std::uninitialized_copy(sep_.data(), sep_.data() + sep_.size(), internal::make_ptr(buffer, sep_.size()));
+ }
+};
+
+// Formats a decimal unsigned integer value writing into buffer.
+// thousands_sep is a functor that is called after writing each char to
+// add a thousands separator if necessary.
+template<typename UInt, typename Char, typename ThousandsSep>
+inline void format_decimal(Char *buffer, UInt value, unsigned num_digits, ThousandsSep thousands_sep)
+{
+ buffer += num_digits;
+ while (value >= 100)
+ {
+ // Integer division is slow so do it for a group of two digits instead
+ // of for every digit. The idea comes from the talk by Alexandrescu
+ // "Three Optimization Tips for C++". See speed-test for a comparison.
+ unsigned index = static_cast<unsigned>((value % 100) * 2);
+ value /= 100;
+ *--buffer = Data::DIGITS[index + 1];
+ thousands_sep(buffer);
+ *--buffer = Data::DIGITS[index];
+ thousands_sep(buffer);
+ }
+ if (value < 10)
+ {
+ *--buffer = static_cast<char>('0' + value);
+ return;
+ }
+ unsigned index = static_cast<unsigned>(value * 2);
+ *--buffer = Data::DIGITS[index + 1];
+ thousands_sep(buffer);
+ *--buffer = Data::DIGITS[index];
+}
+
+template<typename UInt, typename Char>
+inline void format_decimal(Char *buffer, UInt value, unsigned num_digits)
+{
+ format_decimal(buffer, value, num_digits, NoThousandsSep());
+ return;
+}
+
+#ifndef _WIN32
+#define FMT_USE_WINDOWS_H 0
+#elif !defined(FMT_USE_WINDOWS_H)
+#define FMT_USE_WINDOWS_H 1
+#endif
+
+// Define FMT_USE_WINDOWS_H to 0 to disable use of windows.h.
+// All the functionality that relies on it will be disabled too.
+#if FMT_USE_WINDOWS_H
+// A converter from UTF-8 to UTF-16.
+// It is only provided for Windows since other systems support UTF-8 natively.
+class UTF8ToUTF16
+{
+private:
+ MemoryBuffer<wchar_t, INLINE_BUFFER_SIZE> buffer_;
+
+public:
+ FMT_API explicit UTF8ToUTF16(StringRef s);
+ operator WStringRef() const
+ {
+ return WStringRef(&buffer_[0], size());
+ }
+ size_t size() const
+ {
+ return buffer_.size() - 1;
+ }
+ const wchar_t *c_str() const
+ {
+ return &buffer_[0];
+ }
+ std::wstring str() const
+ {
+ return std::wstring(&buffer_[0], size());
+ }
+};
+
+// A converter from UTF-16 to UTF-8.
+// It is only provided for Windows since other systems support UTF-8 natively.
+class UTF16ToUTF8
+{
+private:
+ MemoryBuffer<char, INLINE_BUFFER_SIZE> buffer_;
+
+public:
+ UTF16ToUTF8() {}
+ FMT_API explicit UTF16ToUTF8(WStringRef s);
+ operator StringRef() const
+ {
+ return StringRef(&buffer_[0], size());
+ }
+ size_t size() const
+ {
+ return buffer_.size() - 1;
+ }
+ const char *c_str() const
+ {
+ return &buffer_[0];
+ }
+ std::string str() const
+ {
+ return std::string(&buffer_[0], size());
+ }
+
+ // Performs conversion returning a system error code instead of
+ // throwing exception on conversion error. This method may still throw
+ // in case of memory allocation error.
+ FMT_API int convert(WStringRef s);
+};
+
+FMT_API void format_windows_error(fmt::Writer &out, int error_code, fmt::StringRef message) FMT_NOEXCEPT;
+#endif
+
+// A formatting argument value.
+struct Value
+{
+ template<typename Char>
+ struct StringValue
+ {
+ const Char *value;
+ std::size_t size;
+ };
+
+ typedef void (*FormatFunc)(void *formatter, const void *arg, void *format_str_ptr);
+
+ struct CustomValue
+ {
+ const void *value;
+ FormatFunc format;
+ };
+
+ union
+ {
+ int int_value;
+ unsigned uint_value;
+ LongLong long_long_value;
+ ULongLong ulong_long_value;
+ double double_value;
+ long double long_double_value;
+ const void *pointer;
+ StringValue<char> string;
+ StringValue<signed char> sstring;
+ StringValue<unsigned char> ustring;
+ StringValue<wchar_t> wstring;
+ CustomValue custom;
+ };
+
+ enum Type
+ {
+ NONE,
+ NAMED_ARG,
+ // Integer types should go first,
+ INT,
+ UINT,
+ LONG_LONG,
+ ULONG_LONG,
+ BOOL,
+ CHAR,
+ LAST_INTEGER_TYPE = CHAR,
+ // followed by floating-point types.
+ DOUBLE,
+ LONG_DOUBLE,
+ LAST_NUMERIC_TYPE = LONG_DOUBLE,
+ CSTRING,
+ STRING,
+ WSTRING,
+ POINTER,
+ CUSTOM
+ };
+};
+
+// A formatting argument. It is a trivially copyable/constructible type to
+// allow storage in internal::MemoryBuffer.
+struct Arg : Value
+{
+ Type type;
+};
+
+template<typename Char>
+struct NamedArg;
+template<typename Char, typename T>
+struct NamedArgWithType;
+
+template<typename T = void>
+struct Null
+{
+};
+
+// A helper class template to enable or disable overloads taking wide
+// characters and strings in MakeValue.
+template<typename T, typename Char>
+struct WCharHelper
+{
+ typedef Null<T> Supported;
+ typedef T Unsupported;
+};
+
+template<typename T>
+struct WCharHelper<T, wchar_t>
+{
+ typedef T Supported;
+ typedef Null<T> Unsupported;
+};
+
+typedef char Yes[1];
+typedef char No[2];
+
+template<typename T>
+T &get();
+
+// These are non-members to workaround an overload resolution bug in bcc32.
+Yes &convert(fmt::ULongLong);
+No &convert(...);
+
+template<typename T, bool ENABLE_CONVERSION>
+struct ConvertToIntImpl
+{
+ enum
+ {
+ value = ENABLE_CONVERSION
+ };
+};
+
+template<typename T, bool ENABLE_CONVERSION>
+struct ConvertToIntImpl2
+{
+ enum
+ {
+ value = false
+ };
+};
+
+template<typename T>
+struct ConvertToIntImpl2<T, true>
+{
+ enum
+ {
+ // Don't convert numeric types.
+ value = ConvertToIntImpl<T, !std::numeric_limits<T>::is_specialized>::value
+ };
+};
+
+template<typename T>
+struct ConvertToInt
+{
+ enum
+ {
+ enable_conversion = sizeof(fmt::internal::convert(get<T>())) == sizeof(Yes)
+ };
+ enum
+ {
+ value = ConvertToIntImpl2<T, enable_conversion>::value
+ };
+};
+
+#define FMT_DISABLE_CONVERSION_TO_INT(Type) \
+ template<> \
+ struct ConvertToInt<Type> \
+ { \
+ enum \
+ { \
+ value = 0 \
+ }; \
+ }
+
+// Silence warnings about convering float to int.
+FMT_DISABLE_CONVERSION_TO_INT(float);
+FMT_DISABLE_CONVERSION_TO_INT(double);
+FMT_DISABLE_CONVERSION_TO_INT(long double);
+
+template<bool B, class T = void>
+struct EnableIf
+{
+};
+
+template<class T>
+struct EnableIf<true, T>
+{
+ typedef T type;
+};
+
+template<bool B, class T, class F>
+struct Conditional
+{
+ typedef T type;
+};
+
+template<class T, class F>
+struct Conditional<false, T, F>
+{
+ typedef F type;
+};
+
+// For bcc32 which doesn't understand ! in template arguments.
+template<bool>
+struct Not
+{
+ enum
+ {
+ value = 0
+ };
+};
+
+template<>
+struct Not<false>
+{
+ enum
+ {
+ value = 1
+ };
+};
+
+template<typename T>
+struct FalseType
+{
+ enum
+ {
+ value = 0
+ };
+};
+
+template<typename T, T>
+struct LConvCheck
+{
+ LConvCheck(int) {}
+};
+
+// Returns the thousands separator for the current locale.
+// We check if ``lconv`` contains ``thousands_sep`` because on Android
+// ``lconv`` is stubbed as an empty struct.
+template<typename LConv>
+inline StringRef thousands_sep(LConv *lc, LConvCheck<char * LConv::*, &LConv::thousands_sep> = 0)
+{
+ return lc->thousands_sep;
+}
+
+inline fmt::StringRef thousands_sep(...)
+{
+ return "";
+}
+
+#define FMT_CONCAT(a, b) a##b
+
+#if FMT_GCC_VERSION >= 303
+#define FMT_UNUSED __attribute__((unused))
+#else
+#define FMT_UNUSED
+#endif
+
+#ifndef FMT_USE_STATIC_ASSERT
+#define FMT_USE_STATIC_ASSERT 0
+#endif
+
+#if FMT_USE_STATIC_ASSERT || FMT_HAS_FEATURE(cxx_static_assert) || (FMT_GCC_VERSION >= 403 && FMT_HAS_GXX_CXX11) || _MSC_VER >= 1600
+#define FMT_STATIC_ASSERT(cond, message) static_assert(cond, message)
+#else
+#define FMT_CONCAT_(a, b) FMT_CONCAT(a, b)
+#define FMT_STATIC_ASSERT(cond, message) typedef int FMT_CONCAT_(Assert, __LINE__)[(cond) ? 1 : -1] FMT_UNUSED
+#endif
+
+template<typename Formatter>
+void format_arg(Formatter &, ...)
+{
+ FMT_STATIC_ASSERT(FalseType<Formatter>::value, "Cannot format argument. To enable the use of ostream "
+ "operator<< include fmt/ostream.h. Otherwise provide "
+ "an overload of format_arg.");
+}
+
+// Makes an Arg object from any type.
+template<typename Formatter>
+class MakeValue : public Arg
+{
+public:
+ typedef typename Formatter::Char Char;
+
+private:
+ // The following two methods are private to disallow formatting of
+ // arbitrary pointers. If you want to output a pointer cast it to
+ // "void *" or "const void *". In particular, this forbids formatting
+ // of "[const] volatile char *" which is printed as bool by iostreams.
+ // Do not implement!
+ template<typename T>
+ MakeValue(const T *value);
+ template<typename T>
+ MakeValue(T *value);
+
+ // The following methods are private to disallow formatting of wide
+ // characters and strings into narrow strings as in
+ // fmt::format("{}", L"test");
+ // To fix this, use a wide format string: fmt::format(L"{}", L"test").
+#if !FMT_MSC_VER || defined(_NATIVE_WCHAR_T_DEFINED)
+ MakeValue(typename WCharHelper<wchar_t, Char>::Unsupported);
+#endif
+ MakeValue(typename WCharHelper<wchar_t *, Char>::Unsupported);
+ MakeValue(typename WCharHelper<const wchar_t *, Char>::Unsupported);
+ MakeValue(typename WCharHelper<const std::wstring &, Char>::Unsupported);
+#if FMT_HAS_STRING_VIEW
+ MakeValue(typename WCharHelper<const std::wstring_view &, Char>::Unsupported);
+#endif
+ MakeValue(typename WCharHelper<WStringRef, Char>::Unsupported);
+
+ void set_string(StringRef str)
+ {
+ string.value = str.data();
+ string.size = str.size();
+ }
+
+ void set_string(WStringRef str)
+ {
+ wstring.value = str.data();
+ wstring.size = str.size();
+ }
+
+ // Formats an argument of a custom type, such as a user-defined class.
+ template<typename T>
+ static void format_custom_arg(void *formatter, const void *arg, void *format_str_ptr)
+ {
+ format_arg(*static_cast<Formatter *>(formatter), *static_cast<const Char **>(format_str_ptr), *static_cast<const T *>(arg));
+ }
+
+public:
+ MakeValue() {}
+
+#define FMT_MAKE_VALUE_(Type, field, TYPE, rhs) \
+ MakeValue(Type value) \
+ { \
+ field = rhs; \
+ } \
+ static uint64_t type(Type) \
+ { \
+ return Arg::TYPE; \
+ }
+
+#define FMT_MAKE_VALUE(Type, field, TYPE) FMT_MAKE_VALUE_(Type, field, TYPE, value)
+
+ FMT_MAKE_VALUE(bool, int_value, BOOL)
+ FMT_MAKE_VALUE(short, int_value, INT)
+ FMT_MAKE_VALUE(unsigned short, uint_value, UINT)
+ FMT_MAKE_VALUE(int, int_value, INT)
+ FMT_MAKE_VALUE(unsigned, uint_value, UINT)
+
+ MakeValue(long value)
+ {
+ // To minimize the number of types we need to deal with, long is
+ // translated either to int or to long long depending on its size.
+ if (const_check(sizeof(long) == sizeof(int)))
+ int_value = static_cast<int>(value);
+ else
+ long_long_value = value;
+ }
+ static uint64_t type(long)
+ {
+ return sizeof(long) == sizeof(int) ? Arg::INT : Arg::LONG_LONG;
+ }
+
+ MakeValue(unsigned long value)
+ {
+ if (const_check(sizeof(unsigned long) == sizeof(unsigned)))
+ uint_value = static_cast<unsigned>(value);
+ else
+ ulong_long_value = value;
+ }
+ static uint64_t type(unsigned long)
+ {
+ return sizeof(unsigned long) == sizeof(unsigned) ? Arg::UINT : Arg::ULONG_LONG;
+ }
+
+ FMT_MAKE_VALUE(LongLong, long_long_value, LONG_LONG)
+ FMT_MAKE_VALUE(ULongLong, ulong_long_value, ULONG_LONG)
+ FMT_MAKE_VALUE(float, double_value, DOUBLE)
+ FMT_MAKE_VALUE(double, double_value, DOUBLE)
+ FMT_MAKE_VALUE(long double, long_double_value, LONG_DOUBLE)
+ FMT_MAKE_VALUE(signed char, int_value, INT)
+ FMT_MAKE_VALUE(unsigned char, uint_value, UINT)
+ FMT_MAKE_VALUE(char, int_value, CHAR)
+
+#if __cplusplus >= 201103L
+ template<typename T, typename = typename std::enable_if<std::is_enum<T>::value && ConvertToInt<T>::value>::type>
+ MakeValue(T value)
+ {
+ int_value = value;
+ }
+
+ template<typename T, typename = typename std::enable_if<std::is_enum<T>::value && ConvertToInt<T>::value>::type>
+ static uint64_t type(T)
+ {
+ return Arg::INT;
+ }
+#endif
+
+#if !defined(_MSC_VER) || defined(_NATIVE_WCHAR_T_DEFINED)
+ MakeValue(typename WCharHelper<wchar_t, Char>::Supported value)
+ {
+ int_value = value;
+ }
+ static uint64_t type(wchar_t)
+ {
+ return Arg::CHAR;
+ }
+#endif
+
+#define FMT_MAKE_STR_VALUE(Type, TYPE) \
+ MakeValue(Type value) \
+ { \
+ set_string(value); \
+ } \
+ static uint64_t type(Type) \
+ { \
+ return Arg::TYPE; \
+ }
+
+ FMT_MAKE_VALUE(char *, string.value, CSTRING)
+ FMT_MAKE_VALUE(const char *, string.value, CSTRING)
+ FMT_MAKE_VALUE(signed char *, sstring.value, CSTRING)
+ FMT_MAKE_VALUE(const signed char *, sstring.value, CSTRING)
+ FMT_MAKE_VALUE(unsigned char *, ustring.value, CSTRING)
+ FMT_MAKE_VALUE(const unsigned char *, ustring.value, CSTRING)
+ FMT_MAKE_STR_VALUE(const std::string &, STRING)
+#if FMT_HAS_STRING_VIEW
+ FMT_MAKE_STR_VALUE(const std::string_view &, STRING)
+#endif
+ FMT_MAKE_STR_VALUE(StringRef, STRING)
+ FMT_MAKE_VALUE_(CStringRef, string.value, CSTRING, value.c_str())
+
+#define FMT_MAKE_WSTR_VALUE(Type, TYPE) \
+ MakeValue(typename WCharHelper<Type, Char>::Supported value) \
+ { \
+ set_string(value); \
+ } \
+ static uint64_t type(Type) \
+ { \
+ return Arg::TYPE; \
+ }
+
+ FMT_MAKE_WSTR_VALUE(wchar_t *, WSTRING)
+ FMT_MAKE_WSTR_VALUE(const wchar_t *, WSTRING)
+ FMT_MAKE_WSTR_VALUE(const std::wstring &, WSTRING)
+#if FMT_HAS_STRING_VIEW
+ FMT_MAKE_WSTR_VALUE(const std::wstring_view &, WSTRING)
+#endif
+ FMT_MAKE_WSTR_VALUE(WStringRef, WSTRING)
+
+ FMT_MAKE_VALUE(void *, pointer, POINTER)
+ FMT_MAKE_VALUE(const void *, pointer, POINTER)
+
+ template<typename T>
+ MakeValue(const T &value, typename EnableIf<Not<ConvertToInt<T>::value>::value, int>::type = 0)
+ {
+ custom.value = &value;
+ custom.format = &format_custom_arg<T>;
+ }
+
+ template<typename T>
+ static typename EnableIf<Not<ConvertToInt<T>::value>::value, uint64_t>::type type(const T &)
+ {
+ return Arg::CUSTOM;
+ }
+
+ // Additional template param `Char_` is needed here because make_type always
+ // uses char.
+ template<typename Char_>
+ MakeValue(const NamedArg<Char_> &value)
+ {
+ pointer = &value;
+ }
+ template<typename Char_, typename T>
+ MakeValue(const NamedArgWithType<Char_, T> &value)
+ {
+ pointer = &value;
+ }
+
+ template<typename Char_>
+ static uint64_t type(const NamedArg<Char_> &)
+ {
+ return Arg::NAMED_ARG;
+ }
+ template<typename Char_, typename T>
+ static uint64_t type(const NamedArgWithType<Char_, T> &)
+ {
+ return Arg::NAMED_ARG;
+ }
+};
+
+template<typename Formatter>
+class MakeArg : public Arg
+{
+public:
+ MakeArg()
+ {
+ type = Arg::NONE;
+ }
+
+ template<typename T>
+ MakeArg(const T &value)
+ : Arg(MakeValue<Formatter>(value))
+ {
+ type = static_cast<Arg::Type>(MakeValue<Formatter>::type(value));
+ }
+};
+
+template<typename Char>
+struct NamedArg : Arg
+{
+ BasicStringRef<Char> name;
+
+ template<typename T>
+ NamedArg(BasicStringRef<Char> argname, const T &value)
+ : Arg(MakeArg<BasicFormatter<Char>>(value))
+ , name(argname)
+ {
+ }
+};
+
+template<typename Char, typename T>
+struct NamedArgWithType : NamedArg<Char>
+{
+ NamedArgWithType(BasicStringRef<Char> argname, const T &value)
+ : NamedArg<Char>(argname, value)
+ {
+ }
+};
+
+class RuntimeError : public std::runtime_error
+{
+protected:
+ RuntimeError()
+ : std::runtime_error("")
+ {
+ }
+ RuntimeError(const RuntimeError &rerr)
+ : std::runtime_error(rerr)
+ {
+ }
+ FMT_API ~RuntimeError() FMT_DTOR_NOEXCEPT FMT_OVERRIDE;
+};
+
+template<typename Char>
+class ArgMap;
+} // namespace internal
+
+/** An argument list. */
+class ArgList
+{
+private:
+ // To reduce compiled code size per formatting function call, types of first
+ // MAX_PACKED_ARGS arguments are passed in the types_ field.
+ uint64_t types_;
+ union
+ {
+ // If the number of arguments is less than MAX_PACKED_ARGS, the argument
+ // values are stored in values_, otherwise they are stored in args_.
+ // This is done to reduce compiled code size as storing larger objects
+ // may require more code (at least on x86-64) even if the same amount of
+ // data is actually copied to stack. It saves ~10% on the bloat test.
+ const internal::Value *values_;
+ const internal::Arg *args_;
+ };
+
+ internal::Arg::Type type(unsigned index) const
+ {
+ return type(types_, index);
+ }
+
+ template<typename Char>
+ friend class internal::ArgMap;
+
+public:
+ // Maximum number of arguments with packed types.
+ enum
+ {
+ MAX_PACKED_ARGS = 16
+ };
+
+ ArgList()
+ : types_(0)
+ {
+ }
+
+ ArgList(ULongLong types, const internal::Value *values)
+ : types_(types)
+ , values_(values)
+ {
+ }
+ ArgList(ULongLong types, const internal::Arg *args)
+ : types_(types)
+ , args_(args)
+ {
+ }
+
+ uint64_t types() const
+ {
+ return types_;
+ }
+
+ /** Returns the argument at specified index. */
+ internal::Arg operator[](unsigned index) const
+ {
+ using internal::Arg;
+ Arg arg;
+ bool use_values = type(MAX_PACKED_ARGS - 1) == Arg::NONE;
+ if (index < MAX_PACKED_ARGS)
+ {
+ Arg::Type arg_type = type(index);
+ internal::Value &val = arg;
+ if (arg_type != Arg::NONE)
+ val = use_values ? values_[index] : args_[index];
+ arg.type = arg_type;
+ return arg;
+ }
+ if (use_values)
+ {
+ // The index is greater than the number of arguments that can be stored
+ // in values, so return a "none" argument.
+ arg.type = Arg::NONE;
+ return arg;
+ }
+ for (unsigned i = MAX_PACKED_ARGS; i <= index; ++i)
+ {
+ if (args_[i].type == Arg::NONE)
+ return args_[i];
+ }
+ return args_[index];
+ }
+
+ static internal::Arg::Type type(uint64_t types, unsigned index)
+ {
+ unsigned shift = index * 4;
+ uint64_t mask = 0xf;
+ return static_cast<internal::Arg::Type>((types & (mask << shift)) >> shift);
+ }
+};
+
+#define FMT_DISPATCH(call) static_cast<Impl *>(this)->call
+
+/**
+ \rst
+ An argument visitor based on the `curiously recurring template pattern
+ <http://en.wikipedia.org/wiki/Curiously_recurring_template_pattern>`_.
+
+ To use `~fmt::ArgVisitor` define a subclass that implements some or all of the
+ visit methods with the same signatures as the methods in `~fmt::ArgVisitor`,
+ for example, `~fmt::ArgVisitor::visit_int()`.
+ Pass the subclass as the *Impl* template parameter. Then calling
+ `~fmt::ArgVisitor::visit` for some argument will dispatch to a visit method
+ specific to the argument type. For example, if the argument type is
+ ``double`` then the `~fmt::ArgVisitor::visit_double()` method of a subclass
+ will be called. If the subclass doesn't contain a method with this signature,
+ then a corresponding method of `~fmt::ArgVisitor` will be called.
+
+ **Example**::
+
+ class MyArgVisitor : public fmt::ArgVisitor<MyArgVisitor, void> {
+ public:
+ void visit_int(int value) { fmt::print("{}", value); }
+ void visit_double(double value) { fmt::print("{}", value ); }
+ };
+ \endrst
+ */
+template<typename Impl, typename Result>
+class ArgVisitor
+{
+private:
+ typedef internal::Arg Arg;
+
+public:
+ void report_unhandled_arg() {}
+
+ Result visit_unhandled_arg()
+ {
+ FMT_DISPATCH(report_unhandled_arg());
+ return Result();
+ }
+
+ /** Visits an ``int`` argument. **/
+ Result visit_int(int value)
+ {
+ return FMT_DISPATCH(visit_any_int(value));
+ }
+
+ /** Visits a ``long long`` argument. **/
+ Result visit_long_long(LongLong value)
+ {
+ return FMT_DISPATCH(visit_any_int(value));
+ }
+
+ /** Visits an ``unsigned`` argument. **/
+ Result visit_uint(unsigned value)
+ {
+ return FMT_DISPATCH(visit_any_int(value));
+ }
+
+ /** Visits an ``unsigned long long`` argument. **/
+ Result visit_ulong_long(ULongLong value)
+ {
+ return FMT_DISPATCH(visit_any_int(value));
+ }
+
+ /** Visits a ``bool`` argument. **/
+ Result visit_bool(bool value)
+ {
+ return FMT_DISPATCH(visit_any_int(value));
+ }
+
+ /** Visits a ``char`` or ``wchar_t`` argument. **/
+ Result visit_char(int value)
+ {
+ return FMT_DISPATCH(visit_any_int(value));
+ }
+
+ /** Visits an argument of any integral type. **/
+ template<typename T>
+ Result visit_any_int(T)
+ {
+ return FMT_DISPATCH(visit_unhandled_arg());
+ }
+
+ /** Visits a ``double`` argument. **/
+ Result visit_double(double value)
+ {
+ return FMT_DISPATCH(visit_any_double(value));
+ }
+
+ /** Visits a ``long double`` argument. **/
+ Result visit_long_double(long double value)
+ {
+ return FMT_DISPATCH(visit_any_double(value));
+ }
+
+ /** Visits a ``double`` or ``long double`` argument. **/
+ template<typename T>
+ Result visit_any_double(T)
+ {
+ return FMT_DISPATCH(visit_unhandled_arg());
+ }
+
+ /** Visits a null-terminated C string (``const char *``) argument. **/
+ Result visit_cstring(const char *)
+ {
+ return FMT_DISPATCH(visit_unhandled_arg());
+ }
+
+ /** Visits a string argument. **/
+ Result visit_string(Arg::StringValue<char>)
+ {
+ return FMT_DISPATCH(visit_unhandled_arg());
+ }
+
+ /** Visits a wide string argument. **/
+ Result visit_wstring(Arg::StringValue<wchar_t>)
+ {
+ return FMT_DISPATCH(visit_unhandled_arg());
+ }
+
+ /** Visits a pointer argument. **/
+ Result visit_pointer(const void *)
+ {
+ return FMT_DISPATCH(visit_unhandled_arg());
+ }
+
+ /** Visits an argument of a custom (user-defined) type. **/
+ Result visit_custom(Arg::CustomValue)
+ {
+ return FMT_DISPATCH(visit_unhandled_arg());
+ }
+
+ /**
+ \rst
+ Visits an argument dispatching to the appropriate visit method based on
+ the argument type. For example, if the argument type is ``double`` then
+ the `~fmt::ArgVisitor::visit_double()` method of the *Impl* class will be
+ called.
+ \endrst
+ */
+ Result visit(const Arg &arg)
+ {
+ switch (arg.type)
+ {
+ case Arg::NONE:
+ case Arg::NAMED_ARG:
+ FMT_ASSERT(false, "invalid argument type");
+ break;
+ case Arg::INT:
+ return FMT_DISPATCH(visit_int(arg.int_value));
+ case Arg::UINT:
+ return FMT_DISPATCH(visit_uint(arg.uint_value));
+ case Arg::LONG_LONG:
+ return FMT_DISPATCH(visit_long_long(arg.long_long_value));
+ case Arg::ULONG_LONG:
+ return FMT_DISPATCH(visit_ulong_long(arg.ulong_long_value));
+ case Arg::BOOL:
+ return FMT_DISPATCH(visit_bool(arg.int_value != 0));
+ case Arg::CHAR:
+ return FMT_DISPATCH(visit_char(arg.int_value));
+ case Arg::DOUBLE:
+ return FMT_DISPATCH(visit_double(arg.double_value));
+ case Arg::LONG_DOUBLE:
+ return FMT_DISPATCH(visit_long_double(arg.long_double_value));
+ case Arg::CSTRING:
+ return FMT_DISPATCH(visit_cstring(arg.string.value));
+ case Arg::STRING:
+ return FMT_DISPATCH(visit_string(arg.string));
+ case Arg::WSTRING:
+ return FMT_DISPATCH(visit_wstring(arg.wstring));
+ case Arg::POINTER:
+ return FMT_DISPATCH(visit_pointer(arg.pointer));
+ case Arg::CUSTOM:
+ return FMT_DISPATCH(visit_custom(arg.custom));
+ }
+ return Result();
+ }
+};
+
+enum Alignment
+{
+ ALIGN_DEFAULT,
+ ALIGN_LEFT,
+ ALIGN_RIGHT,
+ ALIGN_CENTER,
+ ALIGN_NUMERIC
+};
+
+// Flags.
+enum
+{
+ SIGN_FLAG = 1,
+ PLUS_FLAG = 2,
+ MINUS_FLAG = 4,
+ HASH_FLAG = 8,
+ CHAR_FLAG = 0x10 // Argument has char type - used in error reporting.
+};
+
+// An empty format specifier.
+struct EmptySpec
+{
+};
+
+// A type specifier.
+template<char TYPE>
+struct TypeSpec : EmptySpec
+{
+ Alignment align() const
+ {
+ return ALIGN_DEFAULT;
+ }
+ unsigned width() const
+ {
+ return 0;
+ }
+ int precision() const
+ {
+ return -1;
+ }
+ bool flag(unsigned) const
+ {
+ return false;
+ }
+ char type() const
+ {
+ return TYPE;
+ }
+ char type_prefix() const
+ {
+ return TYPE;
+ }
+ char fill() const
+ {
+ return ' ';
+ }
+};
+
+// A width specifier.
+struct WidthSpec
+{
+ unsigned width_;
+ // Fill is always wchar_t and cast to char if necessary to avoid having
+ // two specialization of WidthSpec and its subclasses.
+ wchar_t fill_;
+
+ WidthSpec(unsigned width, wchar_t fill)
+ : width_(width)
+ , fill_(fill)
+ {
+ }
+
+ unsigned width() const
+ {
+ return width_;
+ }
+ wchar_t fill() const
+ {
+ return fill_;
+ }
+};
+
+// An alignment specifier.
+struct AlignSpec : WidthSpec
+{
+ Alignment align_;
+
+ AlignSpec(unsigned width, wchar_t fill, Alignment align = ALIGN_DEFAULT)
+ : WidthSpec(width, fill)
+ , align_(align)
+ {
+ }
+
+ Alignment align() const
+ {
+ return align_;
+ }
+
+ int precision() const
+ {
+ return -1;
+ }
+};
+
+// An alignment and type specifier.
+template<char TYPE>
+struct AlignTypeSpec : AlignSpec
+{
+ AlignTypeSpec(unsigned width, wchar_t fill)
+ : AlignSpec(width, fill)
+ {
+ }
+
+ bool flag(unsigned) const
+ {
+ return false;
+ }
+ char type() const
+ {
+ return TYPE;
+ }
+ char type_prefix() const
+ {
+ return TYPE;
+ }
+};
+
+// A full format specifier.
+struct FormatSpec : AlignSpec
+{
+ unsigned flags_;
+ int precision_;
+ char type_;
+
+ FormatSpec(unsigned width = 0, char type = 0, wchar_t fill = ' ')
+ : AlignSpec(width, fill)
+ , flags_(0)
+ , precision_(-1)
+ , type_(type)
+ {
+ }
+
+ bool flag(unsigned f) const
+ {
+ return (flags_ & f) != 0;
+ }
+ int precision() const
+ {
+ return precision_;
+ }
+ char type() const
+ {
+ return type_;
+ }
+ char type_prefix() const
+ {
+ return type_;
+ }
+};
+
+// An integer format specifier.
+template<typename T, typename SpecT = TypeSpec<0>, typename Char = char>
+class IntFormatSpec : public SpecT
+{
+private:
+ T value_;
+
+public:
+ IntFormatSpec(T val, const SpecT &spec = SpecT())
+ : SpecT(spec)
+ , value_(val)
+ {
+ }
+
+ T value() const
+ {
+ return value_;
+ }
+};
+
+// A string format specifier.
+template<typename Char>
+class StrFormatSpec : public AlignSpec
+{
+private:
+ const Char *str_;
+
+public:
+ template<typename FillChar>
+ StrFormatSpec(const Char *str, unsigned width, FillChar fill)
+ : AlignSpec(width, fill)
+ , str_(str)
+ {
+ internal::CharTraits<Char>::convert(FillChar());
+ }
+
+ const Char *str() const
+ {
+ return str_;
+ }
+};
+
+/**
+ Returns an integer format specifier to format the value in base 2.
+ */
+IntFormatSpec<int, TypeSpec<'b'>> bin(int value);
+
+/**
+ Returns an integer format specifier to format the value in base 8.
+ */
+IntFormatSpec<int, TypeSpec<'o'>> oct(int value);
+
+/**
+ Returns an integer format specifier to format the value in base 16 using
+ lower-case letters for the digits above 9.
+ */
+IntFormatSpec<int, TypeSpec<'x'>> hex(int value);
+
+/**
+ Returns an integer formatter format specifier to format in base 16 using
+ upper-case letters for the digits above 9.
+ */
+IntFormatSpec<int, TypeSpec<'X'>> hexu(int value);
+
+/**
+ \rst
+ Returns an integer format specifier to pad the formatted argument with the
+ fill character to the specified width using the default (right) numeric
+ alignment.
+
+ **Example**::
+
+ MemoryWriter out;
+ out << pad(hex(0xcafe), 8, '0');
+ // out.str() == "0000cafe"
+
+ \endrst
+ */
+template<char TYPE_CODE, typename Char>
+IntFormatSpec<int, AlignTypeSpec<TYPE_CODE>, Char> pad(int value, unsigned width, Char fill = ' ');
+
+#define FMT_DEFINE_INT_FORMATTERS(TYPE) \
+ inline IntFormatSpec<TYPE, TypeSpec<'b'>> bin(TYPE value) \
+ { \
+ return IntFormatSpec<TYPE, TypeSpec<'b'>>(value, TypeSpec<'b'>()); \
+ } \
+ \
+ inline IntFormatSpec<TYPE, TypeSpec<'o'>> oct(TYPE value) \
+ { \
+ return IntFormatSpec<TYPE, TypeSpec<'o'>>(value, TypeSpec<'o'>()); \
+ } \
+ \
+ inline IntFormatSpec<TYPE, TypeSpec<'x'>> hex(TYPE value) \
+ { \
+ return IntFormatSpec<TYPE, TypeSpec<'x'>>(value, TypeSpec<'x'>()); \
+ } \
+ \
+ inline IntFormatSpec<TYPE, TypeSpec<'X'>> hexu(TYPE value) \
+ { \
+ return IntFormatSpec<TYPE, TypeSpec<'X'>>(value, TypeSpec<'X'>()); \
+ } \
+ \
+ template<char TYPE_CODE> \
+ inline IntFormatSpec<TYPE, AlignTypeSpec<TYPE_CODE>> pad(IntFormatSpec<TYPE, TypeSpec<TYPE_CODE>> f, unsigned width) \
+ { \
+ return IntFormatSpec<TYPE, AlignTypeSpec<TYPE_CODE>>(f.value(), AlignTypeSpec<TYPE_CODE>(width, ' ')); \
+ } \
+ \
+ /* For compatibility with older compilers we provide two overloads for pad, */ \
+ /* one that takes a fill character and one that doesn't. In the future this */ \
+ /* can be replaced with one overload making the template argument Char */ \
+ /* default to char (C++11). */ \
+ template<char TYPE_CODE, typename Char> \
+ inline IntFormatSpec<TYPE, AlignTypeSpec<TYPE_CODE>, Char> pad( \
+ IntFormatSpec<TYPE, TypeSpec<TYPE_CODE>, Char> f, unsigned width, Char fill) \
+ { \
+ return IntFormatSpec<TYPE, AlignTypeSpec<TYPE_CODE>, Char>(f.value(), AlignTypeSpec<TYPE_CODE>(width, fill)); \
+ } \
+ \
+ inline IntFormatSpec<TYPE, AlignTypeSpec<0>> pad(TYPE value, unsigned width) \
+ { \
+ return IntFormatSpec<TYPE, AlignTypeSpec<0>>(value, AlignTypeSpec<0>(width, ' ')); \
+ } \
+ \
+ template<typename Char> \
+ inline IntFormatSpec<TYPE, AlignTypeSpec<0>, Char> pad(TYPE value, unsigned width, Char fill) \
+ { \
+ return IntFormatSpec<TYPE, AlignTypeSpec<0>, Char>(value, AlignTypeSpec<0>(width, fill)); \
+ }
+
+FMT_DEFINE_INT_FORMATTERS(int)
+FMT_DEFINE_INT_FORMATTERS(long)
+FMT_DEFINE_INT_FORMATTERS(unsigned)
+FMT_DEFINE_INT_FORMATTERS(unsigned long)
+FMT_DEFINE_INT_FORMATTERS(LongLong)
+FMT_DEFINE_INT_FORMATTERS(ULongLong)
+
+/**
+ \rst
+ Returns a string formatter that pads the formatted argument with the fill
+ character to the specified width using the default (left) string alignment.
+
+ **Example**::
+
+ std::string s = str(MemoryWriter() << pad("abc", 8));
+ // s == "abc "
+
+ \endrst
+ */
+template<typename Char>
+inline StrFormatSpec<Char> pad(const Char *str, unsigned width, Char fill = ' ')
+{
+ return StrFormatSpec<Char>(str, width, fill);
+}
+
+inline StrFormatSpec<wchar_t> pad(const wchar_t *str, unsigned width, char fill = ' ')
+{
+ return StrFormatSpec<wchar_t>(str, width, fill);
+}
+
+namespace internal {
+
+template<typename Char>
+class ArgMap
+{
+private:
+ typedef std::vector<std::pair<fmt::BasicStringRef<Char>, internal::Arg>> MapType;
+ typedef typename MapType::value_type Pair;
+
+ MapType map_;
+
+public:
+ void init(const ArgList &args);
+
+ const internal::Arg *find(const fmt::BasicStringRef<Char> &name) const
+ {
+ // The list is unsorted, so just return the first matching name.
+ for (typename MapType::const_iterator it = map_.begin(), end = map_.end(); it != end; ++it)
+ {
+ if (it->first == name)
+ return &it->second;
+ }
+ return FMT_NULL;
+ }
+};
+
+template<typename Char>
+void ArgMap<Char>::init(const ArgList &args)
+{
+ if (!map_.empty())
+ return;
+ typedef internal::NamedArg<Char> NamedArg;
+ const NamedArg *named_arg = FMT_NULL;
+ bool use_values = args.type(ArgList::MAX_PACKED_ARGS - 1) == internal::Arg::NONE;
+ if (use_values)
+ {
+ for (unsigned i = 0; /*nothing*/; ++i)
+ {
+ internal::Arg::Type arg_type = args.type(i);
+ switch (arg_type)
+ {
+ case internal::Arg::NONE:
+ return;
+ case internal::Arg::NAMED_ARG:
+ named_arg = static_cast<const NamedArg *>(args.values_[i].pointer);
+ map_.push_back(Pair(named_arg->name, *named_arg));
+ break;
+ default:
+ /*nothing*/
+ ;
+ }
+ }
+ return;
+ }
+ for (unsigned i = 0; i != ArgList::MAX_PACKED_ARGS; ++i)
+ {
+ internal::Arg::Type arg_type = args.type(i);
+ if (arg_type == internal::Arg::NAMED_ARG)
+ {
+ named_arg = static_cast<const NamedArg *>(args.args_[i].pointer);
+ map_.push_back(Pair(named_arg->name, *named_arg));
+ }
+ }
+ for (unsigned i = ArgList::MAX_PACKED_ARGS; /*nothing*/; ++i)
+ {
+ switch (args.args_[i].type)
+ {
+ case internal::Arg::NONE:
+ return;
+ case internal::Arg::NAMED_ARG:
+ named_arg = static_cast<const NamedArg *>(args.args_[i].pointer);
+ map_.push_back(Pair(named_arg->name, *named_arg));
+ break;
+ default:
+ /*nothing*/
+ ;
+ }
+ }
+}
+
+template<typename Impl, typename Char, typename Spec = fmt::FormatSpec>
+class ArgFormatterBase : public ArgVisitor<Impl, void>
+{
+private:
+ BasicWriter<Char> &writer_;
+ Spec &spec_;
+
+ FMT_DISALLOW_COPY_AND_ASSIGN(ArgFormatterBase);
+
+ void write_pointer(const void *p)
+ {
+ spec_.flags_ = HASH_FLAG;
+ spec_.type_ = 'x';
+ writer_.write_int(reinterpret_cast<uintptr_t>(p), spec_);
+ }
+
+ // workaround MSVC two-phase lookup issue
+ typedef internal::Arg Arg;
+
+protected:
+ BasicWriter<Char> &writer()
+ {
+ return writer_;
+ }
+ Spec &spec()
+ {
+ return spec_;
+ }
+
+ void write(bool value)
+ {
+ const char *str_value = value ? "true" : "false";
+ Arg::StringValue<char> str = {str_value, std::strlen(str_value)};
+ writer_.write_str(str, spec_);
+ }
+
+ void write(const char *value)
+ {
+ Arg::StringValue<char> str = {value, value ? std::strlen(value) : 0};
+ writer_.write_str(str, spec_);
+ }
+
+public:
+ typedef Spec SpecType;
+
+ ArgFormatterBase(BasicWriter<Char> &w, Spec &s)
+ : writer_(w)
+ , spec_(s)
+ {
+ }
+
+ template<typename T>
+ void visit_any_int(T value)
+ {
+ writer_.write_int(value, spec_);
+ }
+
+ template<typename T>
+ void visit_any_double(T value)
+ {
+ writer_.write_double(value, spec_);
+ }
+
+ void visit_bool(bool value)
+ {
+ if (spec_.type_)
+ {
+ visit_any_int(value);
+ return;
+ }
+ write(value);
+ }
+
+ void visit_char(int value)
+ {
+ if (spec_.type_ && spec_.type_ != 'c')
+ {
+ spec_.flags_ |= CHAR_FLAG;
+ writer_.write_int(value, spec_);
+ return;
+ }
+ if (spec_.align_ == ALIGN_NUMERIC || spec_.flags_ != 0)
+ FMT_THROW(FormatError("invalid format specifier for char"));
+ typedef typename BasicWriter<Char>::CharPtr CharPtr;
+ Char fill = internal::CharTraits<Char>::cast(spec_.fill());
+ CharPtr out = CharPtr();
+ const unsigned CHAR_SIZE = 1;
+ if (spec_.width_ > CHAR_SIZE)
+ {
+ out = writer_.grow_buffer(spec_.width_);
+ if (spec_.align_ == ALIGN_RIGHT)
+ {
+ std::uninitialized_fill_n(out, spec_.width_ - CHAR_SIZE, fill);
+ out += spec_.width_ - CHAR_SIZE;
+ }
+ else if (spec_.align_ == ALIGN_CENTER)
+ {
+ out = writer_.fill_padding(out, spec_.width_, internal::const_check(CHAR_SIZE), fill);
+ }
+ else
+ {
+ std::uninitialized_fill_n(out + CHAR_SIZE, spec_.width_ - CHAR_SIZE, fill);
+ }
+ }
+ else
+ {
+ out = writer_.grow_buffer(CHAR_SIZE);
+ }
+ *out = internal::CharTraits<Char>::cast(value);
+ }
+
+ void visit_cstring(const char *value)
+ {
+ if (spec_.type_ == 'p')
+ return write_pointer(value);
+ write(value);
+ }
+
+ // Qualification with "internal" here and below is a workaround for nvcc.
+ void visit_string(internal::Arg::StringValue<char> value)
+ {
+ writer_.write_str(value, spec_);
+ }
+
+ using ArgVisitor<Impl, void>::visit_wstring;
+
+ void visit_wstring(internal::Arg::StringValue<Char> value)
+ {
+ writer_.write_str(value, spec_);
+ }
+
+ void visit_pointer(const void *value)
+ {
+ if (spec_.type_ && spec_.type_ != 'p')
+ report_unknown_type(spec_.type_, "pointer");
+ write_pointer(value);
+ }
+};
+
+class FormatterBase
+{
+private:
+ ArgList args_;
+ int next_arg_index_;
+
+ // Returns the argument with specified index.
+ FMT_API Arg do_get_arg(unsigned arg_index, const char *&error);
+
+protected:
+ const ArgList &args() const
+ {
+ return args_;
+ }
+
+ explicit FormatterBase(const ArgList &args)
+ {
+ args_ = args;
+ next_arg_index_ = 0;
+ }
+
+ // Returns the next argument.
+ Arg next_arg(const char *&error)
+ {
+ if (next_arg_index_ >= 0)
+ return do_get_arg(internal::to_unsigned(next_arg_index_++), error);
+ error = "cannot switch from manual to automatic argument indexing";
+ return Arg();
+ }
+
+ // Checks if manual indexing is used and returns the argument with
+ // specified index.
+ Arg get_arg(unsigned arg_index, const char *&error)
+ {
+ return check_no_auto_index(error) ? do_get_arg(arg_index, error) : Arg();
+ }
+
+ bool check_no_auto_index(const char *&error)
+ {
+ if (next_arg_index_ > 0)
+ {
+ error = "cannot switch from automatic to manual argument indexing";
+ return false;
+ }
+ next_arg_index_ = -1;
+ return true;
+ }
+
+ template<typename Char>
+ void write(BasicWriter<Char> &w, const Char *start, const Char *end)
+ {
+ if (start != end)
+ w << BasicStringRef<Char>(start, internal::to_unsigned(end - start));
+ }
+};
+} // namespace internal
+
+/**
+ \rst
+ An argument formatter based on the `curiously recurring template pattern
+ <http://en.wikipedia.org/wiki/Curiously_recurring_template_pattern>`_.
+
+ To use `~fmt::BasicArgFormatter` define a subclass that implements some or
+ all of the visit methods with the same signatures as the methods in
+ `~fmt::ArgVisitor`, for example, `~fmt::ArgVisitor::visit_int()`.
+ Pass the subclass as the *Impl* template parameter. When a formatting
+ function processes an argument, it will dispatch to a visit method
+ specific to the argument type. For example, if the argument type is
+ ``double`` then the `~fmt::ArgVisitor::visit_double()` method of a subclass
+ will be called. If the subclass doesn't contain a method with this signature,
+ then a corresponding method of `~fmt::BasicArgFormatter` or its superclass
+ will be called.
+ \endrst
+ */
+template<typename Impl, typename Char, typename Spec = fmt::FormatSpec>
+class BasicArgFormatter : public internal::ArgFormatterBase<Impl, Char, Spec>
+{
+private:
+ BasicFormatter<Char, Impl> &formatter_;
+ const Char *format_;
+
+public:
+ /**
+ \rst
+ Constructs an argument formatter object.
+ *formatter* is a reference to the main formatter object, *spec* contains
+ format specifier information for standard argument types, and *fmt* points
+ to the part of the format string being parsed for custom argument types.
+ \endrst
+ */
+ BasicArgFormatter(BasicFormatter<Char, Impl> &formatter, Spec &spec, const Char *fmt)
+ : internal::ArgFormatterBase<Impl, Char, Spec>(formatter.writer(), spec)
+ , formatter_(formatter)
+ , format_(fmt)
+ {
+ }
+
+ /** Formats an argument of a custom (user-defined) type. */
+ void visit_custom(internal::Arg::CustomValue c)
+ {
+ c.format(&formatter_, c.value, &format_);
+ }
+};
+
+/** The default argument formatter. */
+template<typename Char>
+class ArgFormatter : public BasicArgFormatter<ArgFormatter<Char>, Char, FormatSpec>
+{
+public:
+ /** Constructs an argument formatter object. */
+ ArgFormatter(BasicFormatter<Char> &formatter, FormatSpec &spec, const Char *fmt)
+ : BasicArgFormatter<ArgFormatter<Char>, Char, FormatSpec>(formatter, spec, fmt)
+ {
+ }
+};
+
+/** This template formats data and writes the output to a writer. */
+template<typename CharType, typename ArgFormatter>
+class BasicFormatter : private internal::FormatterBase
+{
+public:
+ /** The character type for the output. */
+ typedef CharType Char;
+
+private:
+ BasicWriter<Char> &writer_;
+ internal::ArgMap<Char> map_;
+
+ FMT_DISALLOW_COPY_AND_ASSIGN(BasicFormatter);
+
+ using internal::FormatterBase::get_arg;
+
+ // Checks if manual indexing is used and returns the argument with
+ // specified name.
+ internal::Arg get_arg(BasicStringRef<Char> arg_name, const char *&error);
+
+ // Parses argument index and returns corresponding argument.
+ internal::Arg parse_arg_index(const Char *&s);
+
+ // Parses argument name and returns corresponding argument.
+ internal::Arg parse_arg_name(const Char *&s);
+
+public:
+ /**
+ \rst
+ Constructs a ``BasicFormatter`` object. References to the arguments and
+ the writer are stored in the formatter object so make sure they have
+ appropriate lifetimes.
+ \endrst
+ */
+ BasicFormatter(const ArgList &args, BasicWriter<Char> &w)
+ : internal::FormatterBase(args)
+ , writer_(w)
+ {
+ }
+
+ /** Returns a reference to the writer associated with this formatter. */
+ BasicWriter<Char> &writer()
+ {
+ return writer_;
+ }
+
+ /** Formats stored arguments and writes the output to the writer. */
+ void format(BasicCStringRef<Char> format_str);
+
+ // Formats a single argument and advances format_str, a format string pointer.
+ const Char *format(const Char *&format_str, const internal::Arg &arg);
+};
+
+// Generates a comma-separated list with results of applying f to
+// numbers 0..n-1.
+#define FMT_GEN(n, f) FMT_GEN##n(f)
+#define FMT_GEN1(f) f(0)
+#define FMT_GEN2(f) FMT_GEN1(f), f(1)
+#define FMT_GEN3(f) FMT_GEN2(f), f(2)
+#define FMT_GEN4(f) FMT_GEN3(f), f(3)
+#define FMT_GEN5(f) FMT_GEN4(f), f(4)
+#define FMT_GEN6(f) FMT_GEN5(f), f(5)
+#define FMT_GEN7(f) FMT_GEN6(f), f(6)
+#define FMT_GEN8(f) FMT_GEN7(f), f(7)
+#define FMT_GEN9(f) FMT_GEN8(f), f(8)
+#define FMT_GEN10(f) FMT_GEN9(f), f(9)
+#define FMT_GEN11(f) FMT_GEN10(f), f(10)
+#define FMT_GEN12(f) FMT_GEN11(f), f(11)
+#define FMT_GEN13(f) FMT_GEN12(f), f(12)
+#define FMT_GEN14(f) FMT_GEN13(f), f(13)
+#define FMT_GEN15(f) FMT_GEN14(f), f(14)
+
+namespace internal {
+inline uint64_t make_type()
+{
+ return 0;
+}
+
+template<typename T>
+inline uint64_t make_type(const T &arg)
+{
+ return MakeValue<BasicFormatter<char>>::type(arg);
+}
+
+template<std::size_t N, bool /*IsPacked*/ = (N < ArgList::MAX_PACKED_ARGS)>
+struct ArgArray;
+
+template<std::size_t N>
+struct ArgArray<N, true /*IsPacked*/>
+{
+ // '+' is used to silence GCC -Wduplicated-branches warning.
+ typedef Value Type[N > 0 ? N : +1];
+
+ template<typename Formatter, typename T>
+ static Value make(const T &value)
+ {
+#ifdef __clang__
+ Value result = MakeValue<Formatter>(value);
+ // Workaround a bug in Apple LLVM version 4.2 (clang-425.0.28) of clang:
+ // https://github.com/fmtlib/fmt/issues/276
+ (void)result.custom.format;
+ return result;
+#else
+ return MakeValue<Formatter>(value);
+#endif
+ }
+};
+
+template<std::size_t N>
+struct ArgArray<N, false /*IsPacked*/>
+{
+ typedef Arg Type[N + 1]; // +1 for the list end Arg::NONE
+
+ template<typename Formatter, typename T>
+ static Arg make(const T &value)
+ {
+ return MakeArg<Formatter>(value);
+ }
+};
+
+#if FMT_USE_VARIADIC_TEMPLATES
+template<typename Arg, typename... Args>
+inline uint64_t make_type(const Arg &first, const Args &... tail)
+{
+ return make_type(first) | (make_type(tail...) << 4);
+}
+
+#else
+
+struct ArgType
+{
+ uint64_t type;
+
+ ArgType()
+ : type(0)
+ {
+ }
+
+ template<typename T>
+ ArgType(const T &arg)
+ : type(make_type(arg))
+ {
+ }
+};
+
+#define FMT_ARG_TYPE_DEFAULT(n) ArgType t##n = ArgType()
+
+inline uint64_t make_type(FMT_GEN15(FMT_ARG_TYPE_DEFAULT))
+{
+ return t0.type | (t1.type << 4) | (t2.type << 8) | (t3.type << 12) | (t4.type << 16) | (t5.type << 20) | (t6.type << 24) |
+ (t7.type << 28) | (t8.type << 32) | (t9.type << 36) | (t10.type << 40) | (t11.type << 44) | (t12.type << 48) | (t13.type << 52) |
+ (t14.type << 56);
+}
+#endif
+} // namespace internal
+
+#define FMT_MAKE_TEMPLATE_ARG(n) typename T##n
+#define FMT_MAKE_ARG_TYPE(n) T##n
+#define FMT_MAKE_ARG(n) const T##n &v##n
+#define FMT_ASSIGN_char(n) arr[n] = fmt::internal::MakeValue<fmt::BasicFormatter<char>>(v##n)
+#define FMT_ASSIGN_wchar_t(n) arr[n] = fmt::internal::MakeValue<fmt::BasicFormatter<wchar_t>>(v##n)
+
+#if FMT_USE_VARIADIC_TEMPLATES
+// Defines a variadic function returning void.
+#define FMT_VARIADIC_VOID(func, arg_type) \
+ template<typename... Args> \
+ void func(arg_type arg0, const Args &... args) \
+ { \
+ typedef fmt::internal::ArgArray<sizeof...(Args)> ArgArray; \
+ typename ArgArray::Type array{ArgArray::template make<fmt::BasicFormatter<Char>>(args)...}; \
+ func(arg0, fmt::ArgList(fmt::internal::make_type(args...), array)); \
+ }
+
+// Defines a variadic constructor.
+#define FMT_VARIADIC_CTOR(ctor, func, arg0_type, arg1_type) \
+ template<typename... Args> \
+ ctor(arg0_type arg0, arg1_type arg1, const Args &... args) \
+ { \
+ typedef fmt::internal::ArgArray<sizeof...(Args)> ArgArray; \
+ typename ArgArray::Type array{ArgArray::template make<fmt::BasicFormatter<Char>>(args)...}; \
+ func(arg0, arg1, fmt::ArgList(fmt::internal::make_type(args...), array)); \
+ }
+
+#else
+
+#define FMT_MAKE_REF(n) fmt::internal::MakeValue<fmt::BasicFormatter<Char>>(v##n)
+#define FMT_MAKE_REF2(n) v##n
+
+// Defines a wrapper for a function taking one argument of type arg_type
+// and n additional arguments of arbitrary types.
+#define FMT_WRAP1(func, arg_type, n) \
+ template<FMT_GEN(n, FMT_MAKE_TEMPLATE_ARG)> \
+ inline void func(arg_type arg1, FMT_GEN(n, FMT_MAKE_ARG)) \
+ { \
+ const fmt::internal::ArgArray<n>::Type array = {FMT_GEN(n, FMT_MAKE_REF)}; \
+ func(arg1, fmt::ArgList(fmt::internal::make_type(FMT_GEN(n, FMT_MAKE_REF2)), array)); \
+ }
+
+// Emulates a variadic function returning void on a pre-C++11 compiler.
+#define FMT_VARIADIC_VOID(func, arg_type) \
+ inline void func(arg_type arg) \
+ { \
+ func(arg, fmt::ArgList()); \
+ } \
+ FMT_WRAP1(func, arg_type, 1) \
+ FMT_WRAP1(func, arg_type, 2) \
+ FMT_WRAP1(func, arg_type, 3) \
+ FMT_WRAP1(func, arg_type, 4) \
+ FMT_WRAP1(func, arg_type, 5) \
+ FMT_WRAP1(func, arg_type, 6) \
+ FMT_WRAP1(func, arg_type, 7) FMT_WRAP1(func, arg_type, 8) FMT_WRAP1(func, arg_type, 9) FMT_WRAP1(func, arg_type, 10)
+
+#define FMT_CTOR(ctor, func, arg0_type, arg1_type, n) \
+ template<FMT_GEN(n, FMT_MAKE_TEMPLATE_ARG)> \
+ ctor(arg0_type arg0, arg1_type arg1, FMT_GEN(n, FMT_MAKE_ARG)) \
+ { \
+ const fmt::internal::ArgArray<n>::Type array = {FMT_GEN(n, FMT_MAKE_REF)}; \
+ func(arg0, arg1, fmt::ArgList(fmt::internal::make_type(FMT_GEN(n, FMT_MAKE_REF2)), array)); \
+ }
+
+// Emulates a variadic constructor on a pre-C++11 compiler.
+#define FMT_VARIADIC_CTOR(ctor, func, arg0_type, arg1_type) \
+ FMT_CTOR(ctor, func, arg0_type, arg1_type, 1) \
+ FMT_CTOR(ctor, func, arg0_type, arg1_type, 2) \
+ FMT_CTOR(ctor, func, arg0_type, arg1_type, 3) \
+ FMT_CTOR(ctor, func, arg0_type, arg1_type, 4) \
+ FMT_CTOR(ctor, func, arg0_type, arg1_type, 5) \
+ FMT_CTOR(ctor, func, arg0_type, arg1_type, 6) \
+ FMT_CTOR(ctor, func, arg0_type, arg1_type, 7) \
+ FMT_CTOR(ctor, func, arg0_type, arg1_type, 8) \
+ FMT_CTOR(ctor, func, arg0_type, arg1_type, 9) \
+ FMT_CTOR(ctor, func, arg0_type, arg1_type, 10)
+#endif
+
+// Generates a comma-separated list with results of applying f to pairs
+// (argument, index).
+#define FMT_FOR_EACH1(f, x0) f(x0, 0)
+#define FMT_FOR_EACH2(f, x0, x1) FMT_FOR_EACH1(f, x0), f(x1, 1)
+#define FMT_FOR_EACH3(f, x0, x1, x2) FMT_FOR_EACH2(f, x0, x1), f(x2, 2)
+#define FMT_FOR_EACH4(f, x0, x1, x2, x3) FMT_FOR_EACH3(f, x0, x1, x2), f(x3, 3)
+#define FMT_FOR_EACH5(f, x0, x1, x2, x3, x4) FMT_FOR_EACH4(f, x0, x1, x2, x3), f(x4, 4)
+#define FMT_FOR_EACH6(f, x0, x1, x2, x3, x4, x5) FMT_FOR_EACH5(f, x0, x1, x2, x3, x4), f(x5, 5)
+#define FMT_FOR_EACH7(f, x0, x1, x2, x3, x4, x5, x6) FMT_FOR_EACH6(f, x0, x1, x2, x3, x4, x5), f(x6, 6)
+#define FMT_FOR_EACH8(f, x0, x1, x2, x3, x4, x5, x6, x7) FMT_FOR_EACH7(f, x0, x1, x2, x3, x4, x5, x6), f(x7, 7)
+#define FMT_FOR_EACH9(f, x0, x1, x2, x3, x4, x5, x6, x7, x8) FMT_FOR_EACH8(f, x0, x1, x2, x3, x4, x5, x6, x7), f(x8, 8)
+#define FMT_FOR_EACH10(f, x0, x1, x2, x3, x4, x5, x6, x7, x8, x9) FMT_FOR_EACH9(f, x0, x1, x2, x3, x4, x5, x6, x7, x8), f(x9, 9)
+
+/**
+ An error returned by an operating system or a language runtime,
+ for example a file opening error.
+*/
+class SystemError : public internal::RuntimeError
+{
+private:
+ FMT_API void init(int err_code, CStringRef format_str, ArgList args);
+
+protected:
+ int error_code_;
+
+ typedef char Char; // For FMT_VARIADIC_CTOR.
+
+ SystemError() {}
+
+public:
+ /**
+ \rst
+ Constructs a :class:`fmt::SystemError` object with a description
+ formatted with `fmt::format_system_error`. *message* and additional
+ arguments passed into the constructor are formatted similarly to
+ `fmt::format`.
+
+ **Example**::
+
+ // This throws a SystemError with the description
+ // cannot open file 'madeup': No such file or directory
+ // or similar (system message may vary).
+ const char *filename = "madeup";
+ std::FILE *file = std::fopen(filename, "r");
+ if (!file)
+ throw fmt::SystemError(errno, "cannot open file '{}'", filename);
+ \endrst
+ */
+ SystemError(int error_code, CStringRef message)
+ {
+ init(error_code, message, ArgList());
+ }
+ FMT_DEFAULTED_COPY_CTOR(SystemError)
+ FMT_VARIADIC_CTOR(SystemError, init, int, CStringRef)
+
+ FMT_API ~SystemError() FMT_DTOR_NOEXCEPT FMT_OVERRIDE;
+
+ int error_code() const
+ {
+ return error_code_;
+ }
+};
+
+/**
+ \rst
+ Formats an error returned by an operating system or a language runtime,
+ for example a file opening error, and writes it to *out* in the following
+ form:
+
+ .. parsed-literal::
+ *<message>*: *<system-message>*
+
+ where *<message>* is the passed message and *<system-message>* is
+ the system message corresponding to the error code.
+ *error_code* is a system error code as given by ``errno``.
+ If *error_code* is not a valid error code such as -1, the system message
+ may look like "Unknown error -1" and is platform-dependent.
+ \endrst
+ */
+FMT_API void format_system_error(fmt::Writer &out, int error_code, fmt::StringRef message) FMT_NOEXCEPT;
+
+/**
+ \rst
+ This template provides operations for formatting and writing data into
+ a character stream. The output is stored in a buffer provided by a subclass
+ such as :class:`fmt::BasicMemoryWriter`.
+
+ You can use one of the following typedefs for common character types:
+
+ +---------+----------------------+
+ | Type | Definition |
+ +=========+======================+
+ | Writer | BasicWriter<char> |
+ +---------+----------------------+
+ | WWriter | BasicWriter<wchar_t> |
+ +---------+----------------------+
+
+ \endrst
+ */
+template<typename Char>
+class BasicWriter
+{
+private:
+ // Output buffer.
+ Buffer<Char> &buffer_;
+
+ FMT_DISALLOW_COPY_AND_ASSIGN(BasicWriter);
+
+ typedef typename internal::CharTraits<Char>::CharPtr CharPtr;
+
+#if FMT_SECURE_SCL
+ // Returns pointer value.
+ static Char *get(CharPtr p)
+ {
+ return p.base();
+ }
+#else
+ static Char *get(Char *p)
+ {
+ return p;
+ }
+#endif
+
+ // Fills the padding around the content and returns the pointer to the
+ // content area.
+ static CharPtr fill_padding(CharPtr buffer, unsigned total_size, std::size_t content_size, wchar_t fill);
+
+ // Grows the buffer by n characters and returns a pointer to the newly
+ // allocated area.
+ CharPtr grow_buffer(std::size_t n)
+ {
+ std::size_t size = buffer_.size();
+ buffer_.resize(size + n);
+ return internal::make_ptr(&buffer_[size], n);
+ }
+
+ // Writes an unsigned decimal integer.
+ template<typename UInt>
+ Char *write_unsigned_decimal(UInt value, unsigned prefix_size = 0)
+ {
+ unsigned num_digits = internal::count_digits(value);
+ Char *ptr = get(grow_buffer(prefix_size + num_digits));
+ internal::format_decimal(ptr + prefix_size, value, num_digits);
+ return ptr;
+ }
+
+ // Writes a decimal integer.
+ template<typename Int>
+ void write_decimal(Int value)
+ {
+ typedef typename internal::IntTraits<Int>::MainType MainType;
+ MainType abs_value = static_cast<MainType>(value);
+ if (internal::is_negative(value))
+ {
+ abs_value = 0 - abs_value;
+ *write_unsigned_decimal(abs_value, 1) = '-';
+ }
+ else
+ {
+ write_unsigned_decimal(abs_value, 0);
+ }
+ }
+
+ // Prepare a buffer for integer formatting.
+ CharPtr prepare_int_buffer(unsigned num_digits, const EmptySpec &, const char *prefix, unsigned prefix_size)
+ {
+ unsigned size = prefix_size + num_digits;
+ CharPtr p = grow_buffer(size);
+ std::uninitialized_copy(prefix, prefix + prefix_size, p);
+ return p + size - 1;
+ }
+
+ template<typename Spec>
+ CharPtr prepare_int_buffer(unsigned num_digits, const Spec &spec, const char *prefix, unsigned prefix_size);
+
+ // Formats an integer.
+ template<typename T, typename Spec>
+ void write_int(T value, Spec spec);
+
+ // Formats a floating-point number (double or long double).
+ template<typename T, typename Spec>
+ void write_double(T value, const Spec &spec);
+
+ // Writes a formatted string.
+ template<typename StrChar>
+ CharPtr write_str(const StrChar *s, std::size_t size, const AlignSpec &spec);
+
+ template<typename StrChar, typename Spec>
+ void write_str(const internal::Arg::StringValue<StrChar> &str, const Spec &spec);
+
+ // This following methods are private to disallow writing wide characters
+ // and strings to a char stream. If you want to print a wide string as a
+ // pointer as std::ostream does, cast it to const void*.
+ // Do not implement!
+ void operator<<(typename internal::WCharHelper<wchar_t, Char>::Unsupported);
+ void operator<<(typename internal::WCharHelper<const wchar_t *, Char>::Unsupported);
+
+ // Appends floating-point length specifier to the format string.
+ // The second argument is only used for overload resolution.
+ void append_float_length(Char *&format_ptr, long double)
+ {
+ *format_ptr++ = 'L';
+ }
+
+ template<typename T>
+ void append_float_length(Char *&, T)
+ {
+ }
+
+ template<typename Impl, typename Char_, typename Spec_>
+ friend class internal::ArgFormatterBase;
+
+ template<typename Impl, typename Char_, typename Spec_>
+ friend class BasicPrintfArgFormatter;
+
+protected:
+ /**
+ Constructs a ``BasicWriter`` object.
+ */
+ explicit BasicWriter(Buffer<Char> &b)
+ : buffer_(b)
+ {
+ }
+
+public:
+ /**
+ \rst
+ Destroys a ``BasicWriter`` object.
+ \endrst
+ */
+ virtual ~BasicWriter() {}
+
+ /**
+ Returns the total number of characters written.
+ */
+ std::size_t size() const
+ {
+ return buffer_.size();
+ }
+
+ /**
+ Returns a pointer to the output buffer content. No terminating null
+ character is appended.
+ */
+ const Char *data() const FMT_NOEXCEPT
+ {
+ return &buffer_[0];
+ }
+
+ /**
+ Returns a pointer to the output buffer content with terminating null
+ character appended.
+ */
+ const Char *c_str() const
+ {
+ std::size_t size = buffer_.size();
+ buffer_.reserve(size + 1);
+ buffer_[size] = '\0';
+ return &buffer_[0];
+ }
+
+ /**
+ \rst
+ Returns the content of the output buffer as an `std::string`.
+ \endrst
+ */
+ std::basic_string<Char> str() const
+ {
+ return std::basic_string<Char>(&buffer_[0], buffer_.size());
+ }
+
+ /**
+ \rst
+ Writes formatted data.
+
+ *args* is an argument list representing arbitrary arguments.
+
+ **Example**::
+
+ MemoryWriter out;
+ out.write("Current point:\n");
+ out.write("({:+f}, {:+f})", -3.14, 3.14);
+
+ This will write the following output to the ``out`` object:
+
+ .. code-block:: none
+
+ Current point:
+ (-3.140000, +3.140000)
+
+ The output can be accessed using :func:`data()`, :func:`c_str` or
+ :func:`str` methods.
+
+ See also :ref:`syntax`.
+ \endrst
+ */
+ void write(BasicCStringRef<Char> format, ArgList args)
+ {
+ BasicFormatter<Char>(args, *this).format(format);
+ }
+ FMT_VARIADIC_VOID(write, BasicCStringRef<Char>)
+
+ BasicWriter &operator<<(int value)
+ {
+ write_decimal(value);
+ return *this;
+ }
+ BasicWriter &operator<<(unsigned value)
+ {
+ return *this << IntFormatSpec<unsigned>(value);
+ }
+ BasicWriter &operator<<(long value)
+ {
+ write_decimal(value);
+ return *this;
+ }
+ BasicWriter &operator<<(unsigned long value)
+ {
+ return *this << IntFormatSpec<unsigned long>(value);
+ }
+ BasicWriter &operator<<(LongLong value)
+ {
+ write_decimal(value);
+ return *this;
+ }
+
+ /**
+ \rst
+ Formats *value* and writes it to the stream.
+ \endrst
+ */
+ BasicWriter &operator<<(ULongLong value)
+ {
+ return *this << IntFormatSpec<ULongLong>(value);
+ }
+
+ BasicWriter &operator<<(double value)
+ {
+ write_double(value, FormatSpec());
+ return *this;
+ }
+
+ /**
+ \rst
+ Formats *value* using the general format for floating-point numbers
+ (``'g'``) and writes it to the stream.
+ \endrst
+ */
+ BasicWriter &operator<<(long double value)
+ {
+ write_double(value, FormatSpec());
+ return *this;
+ }
+
+ /**
+ Writes a character to the stream.
+ */
+ BasicWriter &operator<<(char value)
+ {
+ buffer_.push_back(value);
+ return *this;
+ }
+
+ BasicWriter &operator<<(typename internal::WCharHelper<wchar_t, Char>::Supported value)
+ {
+ buffer_.push_back(value);
+ return *this;
+ }
+
+ /**
+ \rst
+ Writes *value* to the stream.
+ \endrst
+ */
+ BasicWriter &operator<<(fmt::BasicStringRef<Char> value)
+ {
+ const Char *str = value.data();
+ buffer_.append(str, str + value.size());
+ return *this;
+ }
+
+ BasicWriter &operator<<(typename internal::WCharHelper<StringRef, Char>::Supported value)
+ {
+ const char *str = value.data();
+ buffer_.append(str, str + value.size());
+ return *this;
+ }
+
+ template<typename T, typename Spec, typename FillChar>
+ BasicWriter &operator<<(IntFormatSpec<T, Spec, FillChar> spec)
+ {
+ internal::CharTraits<Char>::convert(FillChar());
+ write_int(spec.value(), spec);
+ return *this;
+ }
+
+ template<typename StrChar>
+ BasicWriter &operator<<(const StrFormatSpec<StrChar> &spec)
+ {
+ const StrChar *s = spec.str();
+ write_str(s, std::char_traits<Char>::length(s), spec);
+ return *this;
+ }
+
+ void clear() FMT_NOEXCEPT
+ {
+ buffer_.clear();
+ }
+
+ Buffer<Char> &buffer() FMT_NOEXCEPT
+ {
+ return buffer_;
+ }
+};
+
+template<typename Char>
+template<typename StrChar>
+typename BasicWriter<Char>::CharPtr BasicWriter<Char>::write_str(const StrChar *s, std::size_t size, const AlignSpec &spec)
+{
+ CharPtr out = CharPtr();
+ if (spec.width() > size)
+ {
+ out = grow_buffer(spec.width());
+ Char fill = internal::CharTraits<Char>::cast(spec.fill());
+ if (spec.align() == ALIGN_RIGHT)
+ {
+ std::uninitialized_fill_n(out, spec.width() - size, fill);
+ out += spec.width() - size;
+ }
+ else if (spec.align() == ALIGN_CENTER)
+ {
+ out = fill_padding(out, spec.width(), size, fill);
+ }
+ else
+ {
+ std::uninitialized_fill_n(out + size, spec.width() - size, fill);
+ }
+ }
+ else
+ {
+ out = grow_buffer(size);
+ }
+ std::uninitialized_copy(s, s + size, out);
+ return out;
+}
+
+template<typename Char>
+template<typename StrChar, typename Spec>
+void BasicWriter<Char>::write_str(const internal::Arg::StringValue<StrChar> &s, const Spec &spec)
+{
+ // Check if StrChar is convertible to Char.
+ internal::CharTraits<Char>::convert(StrChar());
+ if (spec.type_ && spec.type_ != 's')
+ internal::report_unknown_type(spec.type_, "string");
+ const StrChar *str_value = s.value;
+ std::size_t str_size = s.size;
+ if (str_size == 0)
+ {
+ if (!str_value)
+ {
+ FMT_THROW(FormatError("string pointer is null"));
+ }
+ }
+ std::size_t precision = static_cast<std::size_t>(spec.precision_);
+ if (spec.precision_ >= 0 && precision < str_size)
+ str_size = precision;
+ write_str(str_value, str_size, spec);
+}
+
+template<typename Char>
+typename BasicWriter<Char>::CharPtr BasicWriter<Char>::fill_padding(
+ CharPtr buffer, unsigned total_size, std::size_t content_size, wchar_t fill)
+{
+ std::size_t padding = total_size - content_size;
+ std::size_t left_padding = padding / 2;
+ Char fill_char = internal::CharTraits<Char>::cast(fill);
+ std::uninitialized_fill_n(buffer, left_padding, fill_char);
+ buffer += left_padding;
+ CharPtr content = buffer;
+ std::uninitialized_fill_n(buffer + content_size, padding - left_padding, fill_char);
+ return content;
+}
+
+template<typename Char>
+template<typename Spec>
+typename BasicWriter<Char>::CharPtr BasicWriter<Char>::prepare_int_buffer(
+ unsigned num_digits, const Spec &spec, const char *prefix, unsigned prefix_size)
+{
+ unsigned width = spec.width();
+ Alignment align = spec.align();
+ Char fill = internal::CharTraits<Char>::cast(spec.fill());
+ if (spec.precision() > static_cast<int>(num_digits))
+ {
+ // Octal prefix '0' is counted as a digit, so ignore it if precision
+ // is specified.
+ if (prefix_size > 0 && prefix[prefix_size - 1] == '0')
+ --prefix_size;
+ unsigned number_size = prefix_size + internal::to_unsigned(spec.precision());
+ AlignSpec subspec(number_size, '0', ALIGN_NUMERIC);
+ if (number_size >= width)
+ return prepare_int_buffer(num_digits, subspec, prefix, prefix_size);
+ buffer_.reserve(width);
+ unsigned fill_size = width - number_size;
+ if (align != ALIGN_LEFT)
+ {
+ CharPtr p = grow_buffer(fill_size);
+ std::uninitialized_fill(p, p + fill_size, fill);
+ }
+ CharPtr result = prepare_int_buffer(num_digits, subspec, prefix, prefix_size);
+ if (align == ALIGN_LEFT)
+ {
+ CharPtr p = grow_buffer(fill_size);
+ std::uninitialized_fill(p, p + fill_size, fill);
+ }
+ return result;
+ }
+ unsigned size = prefix_size + num_digits;
+ if (width <= size)
+ {
+ CharPtr p = grow_buffer(size);
+ std::uninitialized_copy(prefix, prefix + prefix_size, p);
+ return p + size - 1;
+ }
+ CharPtr p = grow_buffer(width);
+ CharPtr end = p + width;
+ if (align == ALIGN_LEFT)
+ {
+ std::uninitialized_copy(prefix, prefix + prefix_size, p);
+ p += size;
+ std::uninitialized_fill(p, end, fill);
+ }
+ else if (align == ALIGN_CENTER)
+ {
+ p = fill_padding(p, width, size, fill);
+ std::uninitialized_copy(prefix, prefix + prefix_size, p);
+ p += size;
+ }
+ else
+ {
+ if (align == ALIGN_NUMERIC)
+ {
+ if (prefix_size != 0)
+ {
+ p = std::uninitialized_copy(prefix, prefix + prefix_size, p);
+ size -= prefix_size;
+ }
+ }
+ else
+ {
+ std::uninitialized_copy(prefix, prefix + prefix_size, end - size);
+ }
+ std::uninitialized_fill(p, end - size, fill);
+ p = end;
+ }
+ return p - 1;
+}
+
+template<typename Char>
+template<typename T, typename Spec>
+void BasicWriter<Char>::write_int(T value, Spec spec)
+{
+ unsigned prefix_size = 0;
+ typedef typename internal::IntTraits<T>::MainType UnsignedType;
+ UnsignedType abs_value = static_cast<UnsignedType>(value);
+ char prefix[4] = "";
+ if (internal::is_negative(value))
+ {
+ prefix[0] = '-';
+ ++prefix_size;
+ abs_value = 0 - abs_value;
+ }
+ else if (spec.flag(SIGN_FLAG))
+ {
+ prefix[0] = spec.flag(PLUS_FLAG) ? '+' : ' ';
+ ++prefix_size;
+ }
+ switch (spec.type())
+ {
+ case 0:
+ case 'd':
+ {
+ unsigned num_digits = internal::count_digits(abs_value);
+ CharPtr p = prepare_int_buffer(num_digits, spec, prefix, prefix_size) + 1;
+ internal::format_decimal(get(p), abs_value, 0);
+ break;
+ }
+ case 'x':
+ case 'X':
+ {
+ UnsignedType n = abs_value;
+ if (spec.flag(HASH_FLAG))
+ {
+ prefix[prefix_size++] = '0';
+ prefix[prefix_size++] = spec.type_prefix();
+ }
+ unsigned num_digits = 0;
+ do
+ {
+ ++num_digits;
+ } while ((n >>= 4) != 0);
+ Char *p = get(prepare_int_buffer(num_digits, spec, prefix, prefix_size));
+ n = abs_value;
+ const char *digits = spec.type() == 'x' ? "0123456789abcdef" : "0123456789ABCDEF";
+ do
+ {
+ *p-- = digits[n & 0xf];
+ } while ((n >>= 4) != 0);
+ break;
+ }
+ case 'b':
+ case 'B':
+ {
+ UnsignedType n = abs_value;
+ if (spec.flag(HASH_FLAG))
+ {
+ prefix[prefix_size++] = '0';
+ prefix[prefix_size++] = spec.type_prefix();
+ }
+ unsigned num_digits = 0;
+ do
+ {
+ ++num_digits;
+ } while ((n >>= 1) != 0);
+ Char *p = get(prepare_int_buffer(num_digits, spec, prefix, prefix_size));
+ n = abs_value;
+ do
+ {
+ *p-- = static_cast<Char>('0' + (n & 1));
+ } while ((n >>= 1) != 0);
+ break;
+ }
+ case 'o':
+ {
+ UnsignedType n = abs_value;
+ if (spec.flag(HASH_FLAG))
+ prefix[prefix_size++] = '0';
+ unsigned num_digits = 0;
+ do
+ {
+ ++num_digits;
+ } while ((n >>= 3) != 0);
+ Char *p = get(prepare_int_buffer(num_digits, spec, prefix, prefix_size));
+ n = abs_value;
+ do
+ {
+ *p-- = static_cast<Char>('0' + (n & 7));
+ } while ((n >>= 3) != 0);
+ break;
+ }
+ case 'n':
+ {
+ unsigned num_digits = internal::count_digits(abs_value);
+ fmt::StringRef sep = "";
+#if !(defined(ANDROID) || defined(__ANDROID__))
+ sep = internal::thousands_sep(std::localeconv());
+#endif
+ unsigned size = static_cast<unsigned>(num_digits + sep.size() * ((num_digits - 1) / 3));
+ CharPtr p = prepare_int_buffer(size, spec, prefix, prefix_size) + 1;
+ internal::format_decimal(get(p), abs_value, 0, internal::ThousandsSep(sep));
+ break;
+ }
+ default:
+ internal::report_unknown_type(spec.type(), spec.flag(CHAR_FLAG) ? "char" : "integer");
+ break;
+ }
+}
+
+template<typename Char>
+template<typename T, typename Spec>
+void BasicWriter<Char>::write_double(T value, const Spec &spec)
+{
+ // Check type.
+ char type = spec.type();
+ bool upper = false;
+ switch (type)
+ {
+ case 0:
+ type = 'g';
+ break;
+ case 'e':
+ case 'f':
+ case 'g':
+ case 'a':
+ break;
+ case 'F':
+#if FMT_MSC_VER
+ // MSVC's printf doesn't support 'F'.
+ type = 'f';
+#endif
+ // Fall through.
+ case 'E':
+ case 'G':
+ case 'A':
+ upper = true;
+ break;
+ default:
+ internal::report_unknown_type(type, "double");
+ break;
+ }
+
+ char sign = 0;
+ // Use isnegative instead of value < 0 because the latter is always
+ // false for NaN.
+ if (internal::FPUtil::isnegative(static_cast<double>(value)))
+ {
+ sign = '-';
+ value = -value;
+ }
+ else if (spec.flag(SIGN_FLAG))
+ {
+ sign = spec.flag(PLUS_FLAG) ? '+' : ' ';
+ }
+
+ if (internal::FPUtil::isnotanumber(value))
+ {
+ // Format NaN ourselves because sprintf's output is not consistent
+ // across platforms.
+ std::size_t nan_size = 4;
+ const char *nan = upper ? " NAN" : " nan";
+ if (!sign)
+ {
+ --nan_size;
+ ++nan;
+ }
+ CharPtr out = write_str(nan, nan_size, spec);
+ if (sign)
+ *out = sign;
+ return;
+ }
+
+ if (internal::FPUtil::isinfinity(value))
+ {
+ // Format infinity ourselves because sprintf's output is not consistent
+ // across platforms.
+ std::size_t inf_size = 4;
+ const char *inf = upper ? " INF" : " inf";
+ if (!sign)
+ {
+ --inf_size;
+ ++inf;
+ }
+ CharPtr out = write_str(inf, inf_size, spec);
+ if (sign)
+ *out = sign;
+ return;
+ }
+
+ std::size_t offset = buffer_.size();
+ unsigned width = spec.width();
+ if (sign)
+ {
+ buffer_.reserve(buffer_.size() + (width > 1u ? width : 1u));
+ if (width > 0)
+ --width;
+ ++offset;
+ }
+
+ // Build format string.
+ enum
+ {
+ MAX_FORMAT_SIZE = 10
+ }; // longest format: %#-*.*Lg
+ Char format[MAX_FORMAT_SIZE];
+ Char *format_ptr = format;
+ *format_ptr++ = '%';
+ unsigned width_for_sprintf = width;
+ if (spec.flag(HASH_FLAG))
+ *format_ptr++ = '#';
+ if (spec.align() == ALIGN_CENTER)
+ {
+ width_for_sprintf = 0;
+ }
+ else
+ {
+ if (spec.align() == ALIGN_LEFT)
+ *format_ptr++ = '-';
+ if (width != 0)
+ *format_ptr++ = '*';
+ }
+ if (spec.precision() >= 0)
+ {
+ *format_ptr++ = '.';
+ *format_ptr++ = '*';
+ }
+
+ append_float_length(format_ptr, value);
+ *format_ptr++ = type;
+ *format_ptr = '\0';
+
+ // Format using snprintf.
+ Char fill = internal::CharTraits<Char>::cast(spec.fill());
+ unsigned n = 0;
+ Char *start = FMT_NULL;
+ for (;;)
+ {
+ std::size_t buffer_size = buffer_.capacity() - offset;
+#if FMT_MSC_VER
+ // MSVC's vsnprintf_s doesn't work with zero size, so reserve
+ // space for at least one extra character to make the size non-zero.
+ // Note that the buffer's capacity will increase by more than 1.
+ if (buffer_size == 0)
+ {
+ buffer_.reserve(offset + 1);
+ buffer_size = buffer_.capacity() - offset;
+ }
+#endif
+ start = &buffer_[offset];
+ int result = internal::CharTraits<Char>::format_float(start, buffer_size, format, width_for_sprintf, spec.precision(), value);
+ if (result >= 0)
+ {
+ n = internal::to_unsigned(result);
+ if (offset + n < buffer_.capacity())
+ break; // The buffer is large enough - continue with formatting.
+ buffer_.reserve(offset + n + 1);
+ }
+ else
+ {
+ // If result is negative we ask to increase the capacity by at least 1,
+ // but as std::vector, the buffer grows exponentially.
+ buffer_.reserve(buffer_.capacity() + 1);
+ }
+ }
+ if (sign)
+ {
+ if ((spec.align() != ALIGN_RIGHT && spec.align() != ALIGN_DEFAULT) || *start != ' ')
+ {
+ *(start - 1) = sign;
+ sign = 0;
+ }
+ else
+ {
+ *(start - 1) = fill;
+ }
+ ++n;
+ }
+ if (spec.align() == ALIGN_CENTER && spec.width() > n)
+ {
+ width = spec.width();
+ CharPtr p = grow_buffer(width);
+ std::memmove(get(p) + (width - n) / 2, get(p), n * sizeof(Char));
+ fill_padding(p, spec.width(), n, fill);
+ return;
+ }
+ if (spec.fill() != ' ' || sign)
+ {
+ while (*start == ' ')
+ *start++ = fill;
+ if (sign)
+ *(start - 1) = sign;
+ }
+ grow_buffer(n);
+}
+
+/**
+ \rst
+ This class template provides operations for formatting and writing data
+ into a character stream. The output is stored in a memory buffer that grows
+ dynamically.
+
+ You can use one of the following typedefs for common character types
+ and the standard allocator:
+
+ +---------------+-----------------------------------------------------+
+ | Type | Definition |
+ +===============+=====================================================+
+ | MemoryWriter | BasicMemoryWriter<char, std::allocator<char>> |
+ +---------------+-----------------------------------------------------+
+ | WMemoryWriter | BasicMemoryWriter<wchar_t, std::allocator<wchar_t>> |
+ +---------------+-----------------------------------------------------+
+
+ **Example**::
+
+ MemoryWriter out;
+ out << "The answer is " << 42 << "\n";
+ out.write("({:+f}, {:+f})", -3.14, 3.14);
+
+ This will write the following output to the ``out`` object:
+
+ .. code-block:: none
+
+ The answer is 42
+ (-3.140000, +3.140000)
+
+ The output can be converted to an ``std::string`` with ``out.str()`` or
+ accessed as a C string with ``out.c_str()``.
+ \endrst
+ */
+template<typename Char, typename Allocator = std::allocator<Char>>
+class BasicMemoryWriter : public BasicWriter<Char>
+{
+private:
+ internal::MemoryBuffer<Char, internal::INLINE_BUFFER_SIZE, Allocator> buffer_;
+
+public:
+ explicit BasicMemoryWriter(const Allocator &alloc = Allocator())
+ : BasicWriter<Char>(buffer_)
+ , buffer_(alloc)
+ {
+ }
+
+#if FMT_USE_RVALUE_REFERENCES
+ /**
+ \rst
+ Constructs a :class:`fmt::BasicMemoryWriter` object moving the content
+ of the other object to it.
+ \endrst
+ */
+ BasicMemoryWriter(BasicMemoryWriter &&other)
+ : BasicWriter<Char>(buffer_)
+ , buffer_(std::move(other.buffer_))
+ {
+ }
+
+ /**
+ \rst
+ Moves the content of the other ``BasicMemoryWriter`` object to this one.
+ \endrst
+ */
+ BasicMemoryWriter &operator=(BasicMemoryWriter &&other)
+ {
+ buffer_ = std::move(other.buffer_);
+ return *this;
+ }
+#endif
+};
+
+typedef BasicMemoryWriter<char> MemoryWriter;
+typedef BasicMemoryWriter<wchar_t> WMemoryWriter;
+
+/**
+ \rst
+ This class template provides operations for formatting and writing data
+ into a fixed-size array. For writing into a dynamically growing buffer
+ use :class:`fmt::BasicMemoryWriter`.
+
+ Any write method will throw ``std::runtime_error`` if the output doesn't fit
+ into the array.
+
+ You can use one of the following typedefs for common character types:
+
+ +--------------+---------------------------+
+ | Type | Definition |
+ +==============+===========================+
+ | ArrayWriter | BasicArrayWriter<char> |
+ +--------------+---------------------------+
+ | WArrayWriter | BasicArrayWriter<wchar_t> |
+ +--------------+---------------------------+
+ \endrst
+ */
+template<typename Char>
+class BasicArrayWriter : public BasicWriter<Char>
+{
+private:
+ internal::FixedBuffer<Char> buffer_;
+
+public:
+ /**
+ \rst
+ Constructs a :class:`fmt::BasicArrayWriter` object for *array* of the
+ given size.
+ \endrst
+ */
+ BasicArrayWriter(Char *array, std::size_t size)
+ : BasicWriter<Char>(buffer_)
+ , buffer_(array, size)
+ {
+ }
+
+ /**
+ \rst
+ Constructs a :class:`fmt::BasicArrayWriter` object for *array* of the
+ size known at compile time.
+ \endrst
+ */
+ template<std::size_t SIZE>
+ explicit BasicArrayWriter(Char (&array)[SIZE])
+ : BasicWriter<Char>(buffer_)
+ , buffer_(array, SIZE)
+ {
+ }
+};
+
+typedef BasicArrayWriter<char> ArrayWriter;
+typedef BasicArrayWriter<wchar_t> WArrayWriter;
+
+// Reports a system error without throwing an exception.
+// Can be used to report errors from destructors.
+FMT_API void report_system_error(int error_code, StringRef message) FMT_NOEXCEPT;
+
+#if FMT_USE_WINDOWS_H
+
+/** A Windows error. */
+class WindowsError : public SystemError
+{
+private:
+ FMT_API void init(int error_code, CStringRef format_str, ArgList args);
+
+public:
+ /**
+ \rst
+ Constructs a :class:`fmt::WindowsError` object with the description
+ of the form
+
+ .. parsed-literal::
+ *<message>*: *<system-message>*
+
+ where *<message>* is the formatted message and *<system-message>* is the
+ system message corresponding to the error code.
+ *error_code* is a Windows error code as given by ``GetLastError``.
+ If *error_code* is not a valid error code such as -1, the system message
+ will look like "error -1".
+
+ **Example**::
+
+ // This throws a WindowsError with the description
+ // cannot open file 'madeup': The system cannot find the file specified.
+ // or similar (system message may vary).
+ const char *filename = "madeup";
+ LPOFSTRUCT of = LPOFSTRUCT();
+ HFILE file = OpenFile(filename, &of, OF_READ);
+ if (file == HFILE_ERROR) {
+ throw fmt::WindowsError(GetLastError(),
+ "cannot open file '{}'", filename);
+ }
+ \endrst
+ */
+ WindowsError(int error_code, CStringRef message)
+ {
+ init(error_code, message, ArgList());
+ }
+ FMT_VARIADIC_CTOR(WindowsError, init, int, CStringRef)
+};
+
+// Reports a Windows error without throwing an exception.
+// Can be used to report errors from destructors.
+FMT_API void report_windows_error(int error_code, StringRef message) FMT_NOEXCEPT;
+
+#endif
+
+enum Color
+{
+ BLACK,
+ RED,
+ GREEN,
+ YELLOW,
+ BLUE,
+ MAGENTA,
+ CYAN,
+ WHITE
+};
+
+/**
+ Formats a string and prints it to stdout using ANSI escape sequences
+ to specify color (experimental).
+ Example:
+ print_colored(fmt::RED, "Elapsed time: {0:.2f} seconds", 1.23);
+ */
+FMT_API void print_colored(Color c, CStringRef format, ArgList args);
+
+/**
+ \rst
+ Formats arguments and returns the result as a string.
+
+ **Example**::
+
+ std::string message = format("The answer is {}", 42);
+ \endrst
+*/
+inline std::string format(CStringRef format_str, ArgList args)
+{
+ MemoryWriter w;
+ w.write(format_str, args);
+ return w.str();
+}
+
+inline std::wstring format(WCStringRef format_str, ArgList args)
+{
+ WMemoryWriter w;
+ w.write(format_str, args);
+ return w.str();
+}
+
+/**
+ \rst
+ Prints formatted data to the file *f*.
+
+ **Example**::
+
+ print(stderr, "Don't {}!", "panic");
+ \endrst
+ */
+FMT_API void print(std::FILE *f, CStringRef format_str, ArgList args);
+
+/**
+ \rst
+ Prints formatted data to ``stdout``.
+
+ **Example**::
+
+ print("Elapsed time: {0:.2f} seconds", 1.23);
+ \endrst
+ */
+FMT_API void print(CStringRef format_str, ArgList args);
+
+/**
+ Fast integer formatter.
+ */
+class FormatInt
+{
+private:
+ // Buffer should be large enough to hold all digits (digits10 + 1),
+ // a sign and a null character.
+ enum
+ {
+ BUFFER_SIZE = std::numeric_limits<ULongLong>::digits10 + 3
+ };
+ mutable char buffer_[BUFFER_SIZE];
+ char *str_;
+
+ // Formats value in reverse and returns the number of digits.
+ char *format_decimal(ULongLong value)
+ {
+ char *buffer_end = buffer_ + BUFFER_SIZE - 1;
+ while (value >= 100)
+ {
+ // Integer division is slow so do it for a group of two digits instead
+ // of for every digit. The idea comes from the talk by Alexandrescu
+ // "Three Optimization Tips for C++". See speed-test for a comparison.
+ unsigned index = static_cast<unsigned>((value % 100) * 2);
+ value /= 100;
+ *--buffer_end = internal::Data::DIGITS[index + 1];
+ *--buffer_end = internal::Data::DIGITS[index];
+ }
+ if (value < 10)
+ {
+ *--buffer_end = static_cast<char>('0' + value);
+ return buffer_end;
+ }
+ unsigned index = static_cast<unsigned>(value * 2);
+ *--buffer_end = internal::Data::DIGITS[index + 1];
+ *--buffer_end = internal::Data::DIGITS[index];
+ return buffer_end;
+ }
+
+ void FormatSigned(LongLong value)
+ {
+ ULongLong abs_value = static_cast<ULongLong>(value);
+ bool negative = value < 0;
+ if (negative)
+ abs_value = 0 - abs_value;
+ str_ = format_decimal(abs_value);
+ if (negative)
+ *--str_ = '-';
+ }
+
+public:
+ explicit FormatInt(int value)
+ {
+ FormatSigned(value);
+ }
+ explicit FormatInt(long value)
+ {
+ FormatSigned(value);
+ }
+ explicit FormatInt(LongLong value)
+ {
+ FormatSigned(value);
+ }
+ explicit FormatInt(unsigned value)
+ : str_(format_decimal(value))
+ {
+ }
+ explicit FormatInt(unsigned long value)
+ : str_(format_decimal(value))
+ {
+ }
+ explicit FormatInt(ULongLong value)
+ : str_(format_decimal(value))
+ {
+ }
+
+ /** Returns the number of characters written to the output buffer. */
+ std::size_t size() const
+ {
+ return internal::to_unsigned(buffer_ - str_ + BUFFER_SIZE - 1);
+ }
+
+ /**
+ Returns a pointer to the output buffer content. No terminating null
+ character is appended.
+ */
+ const char *data() const
+ {
+ return str_;
+ }
+
+ /**
+ Returns a pointer to the output buffer content with terminating null
+ character appended.
+ */
+ const char *c_str() const
+ {
+ buffer_[BUFFER_SIZE - 1] = '\0';
+ return str_;
+ }
+
+ /**
+ \rst
+ Returns the content of the output buffer as an ``std::string``.
+ \endrst
+ */
+ std::string str() const
+ {
+ return std::string(str_, size());
+ }
+};
+
+// Formats a decimal integer value writing into buffer and returns
+// a pointer to the end of the formatted string. This function doesn't
+// write a terminating null character.
+template<typename T>
+inline void format_decimal(char *&buffer, T value)
+{
+ typedef typename internal::IntTraits<T>::MainType MainType;
+ MainType abs_value = static_cast<MainType>(value);
+ if (internal::is_negative(value))
+ {
+ *buffer++ = '-';
+ abs_value = 0 - abs_value;
+ }
+ if (abs_value < 100)
+ {
+ if (abs_value < 10)
+ {
+ *buffer++ = static_cast<char>('0' + abs_value);
+ return;
+ }
+ unsigned index = static_cast<unsigned>(abs_value * 2);
+ *buffer++ = internal::Data::DIGITS[index];
+ *buffer++ = internal::Data::DIGITS[index + 1];
+ return;
+ }
+ unsigned num_digits = internal::count_digits(abs_value);
+ internal::format_decimal(buffer, abs_value, num_digits);
+ buffer += num_digits;
+}
+
+/**
+ \rst
+ Returns a named argument for formatting functions.
+
+ **Example**::
+
+ print("Elapsed time: {s:.2f} seconds", arg("s", 1.23));
+
+ \endrst
+ */
+template<typename T>
+inline internal::NamedArgWithType<char, T> arg(StringRef name, const T &arg)
+{
+ return internal::NamedArgWithType<char, T>(name, arg);
+}
+
+template<typename T>
+inline internal::NamedArgWithType<wchar_t, T> arg(WStringRef name, const T &arg)
+{
+ return internal::NamedArgWithType<wchar_t, T>(name, arg);
+}
+
+// The following two functions are deleted intentionally to disable
+// nested named arguments as in ``format("{}", arg("a", arg("b", 42)))``.
+template<typename Char>
+void arg(StringRef, const internal::NamedArg<Char> &) FMT_DELETED_OR_UNDEFINED;
+template<typename Char>
+void arg(WStringRef, const internal::NamedArg<Char> &) FMT_DELETED_OR_UNDEFINED;
+} // namespace fmt
+
+#if FMT_GCC_VERSION
+// Use the system_header pragma to suppress warnings about variadic macros
+// because suppressing -Wvariadic-macros with the diagnostic pragma doesn't
+// work. It is used at the end because we want to suppress as little warnings
+// as possible.
+#pragma GCC system_header
+#endif
+
+// This is used to work around VC++ bugs in handling variadic macros.
+#define FMT_EXPAND(args) args
+
+// Returns the number of arguments.
+// Based on https://groups.google.com/forum/#!topic/comp.std.c/d-6Mj5Lko_s.
+#define FMT_NARG(...) FMT_NARG_(__VA_ARGS__, FMT_RSEQ_N())
+#define FMT_NARG_(...) FMT_EXPAND(FMT_ARG_N(__VA_ARGS__))
+#define FMT_ARG_N(_1, _2, _3, _4, _5, _6, _7, _8, _9, _10, N, ...) N
+#define FMT_RSEQ_N() 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0
+
+#define FMT_FOR_EACH_(N, f, ...) FMT_EXPAND(FMT_CONCAT(FMT_FOR_EACH, N)(f, __VA_ARGS__))
+#define FMT_FOR_EACH(f, ...) FMT_EXPAND(FMT_FOR_EACH_(FMT_NARG(__VA_ARGS__), f, __VA_ARGS__))
+
+#define FMT_ADD_ARG_NAME(type, index) type arg##index
+#define FMT_GET_ARG_NAME(type, index) arg##index
+
+#if FMT_USE_VARIADIC_TEMPLATES
+#define FMT_VARIADIC_(Const, Char, ReturnType, func, call, ...) \
+ template<typename... Args> \
+ ReturnType func(FMT_FOR_EACH(FMT_ADD_ARG_NAME, __VA_ARGS__), const Args &... args) Const \
+ { \
+ typedef fmt::internal::ArgArray<sizeof...(Args)> ArgArray; \
+ typename ArgArray::Type array{ArgArray::template make<fmt::BasicFormatter<Char>>(args)...}; \
+ call(FMT_FOR_EACH(FMT_GET_ARG_NAME, __VA_ARGS__), fmt::ArgList(fmt::internal::make_type(args...), array)); \
+ }
+#else
+// Defines a wrapper for a function taking __VA_ARGS__ arguments
+// and n additional arguments of arbitrary types.
+#define FMT_WRAP(Const, Char, ReturnType, func, call, n, ...) \
+ template<FMT_GEN(n, FMT_MAKE_TEMPLATE_ARG)> \
+ inline ReturnType func(FMT_FOR_EACH(FMT_ADD_ARG_NAME, __VA_ARGS__), FMT_GEN(n, FMT_MAKE_ARG)) Const \
+ { \
+ fmt::internal::ArgArray<n>::Type arr; \
+ FMT_GEN(n, FMT_ASSIGN_##Char); \
+ call(FMT_FOR_EACH(FMT_GET_ARG_NAME, __VA_ARGS__), fmt::ArgList(fmt::internal::make_type(FMT_GEN(n, FMT_MAKE_REF2)), arr)); \
+ }
+
+#define FMT_VARIADIC_(Const, Char, ReturnType, func, call, ...) \
+ inline ReturnType func(FMT_FOR_EACH(FMT_ADD_ARG_NAME, __VA_ARGS__)) Const \
+ { \
+ call(FMT_FOR_EACH(FMT_GET_ARG_NAME, __VA_ARGS__), fmt::ArgList()); \
+ } \
+ FMT_WRAP(Const, Char, ReturnType, func, call, 1, __VA_ARGS__) \
+ FMT_WRAP(Const, Char, ReturnType, func, call, 2, __VA_ARGS__) \
+ FMT_WRAP(Const, Char, ReturnType, func, call, 3, __VA_ARGS__) \
+ FMT_WRAP(Const, Char, ReturnType, func, call, 4, __VA_ARGS__) \
+ FMT_WRAP(Const, Char, ReturnType, func, call, 5, __VA_ARGS__) \
+ FMT_WRAP(Const, Char, ReturnType, func, call, 6, __VA_ARGS__) \
+ FMT_WRAP(Const, Char, ReturnType, func, call, 7, __VA_ARGS__) \
+ FMT_WRAP(Const, Char, ReturnType, func, call, 8, __VA_ARGS__) \
+ FMT_WRAP(Const, Char, ReturnType, func, call, 9, __VA_ARGS__) \
+ FMT_WRAP(Const, Char, ReturnType, func, call, 10, __VA_ARGS__) \
+ FMT_WRAP(Const, Char, ReturnType, func, call, 11, __VA_ARGS__) \
+ FMT_WRAP(Const, Char, ReturnType, func, call, 12, __VA_ARGS__) \
+ FMT_WRAP(Const, Char, ReturnType, func, call, 13, __VA_ARGS__) \
+ FMT_WRAP(Const, Char, ReturnType, func, call, 14, __VA_ARGS__) \
+ FMT_WRAP(Const, Char, ReturnType, func, call, 15, __VA_ARGS__)
+#endif // FMT_USE_VARIADIC_TEMPLATES
+
+/**
+ \rst
+ Defines a variadic function with the specified return type, function name
+ and argument types passed as variable arguments to this macro.
+
+ **Example**::
+
+ void print_error(const char *file, int line, const char *format,
+ fmt::ArgList args) {
+ fmt::print("{}: {}: ", file, line);
+ fmt::print(format, args);
+ }
+ FMT_VARIADIC(void, print_error, const char *, int, const char *)
+
+ ``FMT_VARIADIC`` is used for compatibility with legacy C++ compilers that
+ don't implement variadic templates. You don't have to use this macro if
+ you don't need legacy compiler support and can use variadic templates
+ directly::
+
+ template <typename... Args>
+ void print_error(const char *file, int line, const char *format,
+ const Args & ... args) {
+ fmt::print("{}: {}: ", file, line);
+ fmt::print(format, args...);
+ }
+ \endrst
+ */
+#define FMT_VARIADIC(ReturnType, func, ...) FMT_VARIADIC_(, char, ReturnType, func, return func, __VA_ARGS__)
+
+#define FMT_VARIADIC_CONST(ReturnType, func, ...) FMT_VARIADIC_(const, char, ReturnType, func, return func, __VA_ARGS__)
+
+#define FMT_VARIADIC_W(ReturnType, func, ...) FMT_VARIADIC_(, wchar_t, ReturnType, func, return func, __VA_ARGS__)
+
+#define FMT_VARIADIC_CONST_W(ReturnType, func, ...) FMT_VARIADIC_(const, wchar_t, ReturnType, func, return func, __VA_ARGS__)
+
+#define FMT_CAPTURE_ARG_(id, index) ::fmt::arg(#id, id)
+
+#define FMT_CAPTURE_ARG_W_(id, index) ::fmt::arg(L## #id, id)
+
+/**
+ \rst
+ Convenient macro to capture the arguments' names and values into several
+ ``fmt::arg(name, value)``.
+
+ **Example**::
+
+ int x = 1, y = 2;
+ print("point: ({x}, {y})", FMT_CAPTURE(x, y));
+ // same as:
+ // print("point: ({x}, {y})", arg("x", x), arg("y", y));
+
+ \endrst
+ */
+#define FMT_CAPTURE(...) FMT_FOR_EACH(FMT_CAPTURE_ARG_, __VA_ARGS__)
+
+#define FMT_CAPTURE_W(...) FMT_FOR_EACH(FMT_CAPTURE_ARG_W_, __VA_ARGS__)
+
+namespace fmt {
+FMT_VARIADIC(std::string, format, CStringRef)
+FMT_VARIADIC_W(std::wstring, format, WCStringRef)
+FMT_VARIADIC(void, print, CStringRef)
+FMT_VARIADIC(void, print, std::FILE *, CStringRef)
+FMT_VARIADIC(void, print_colored, Color, CStringRef)
+
+namespace internal {
+template<typename Char>
+inline bool is_name_start(Char c)
+{
+ return ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || '_' == c;
+}
+
+// Parses an unsigned integer advancing s to the end of the parsed input.
+// This function assumes that the first character of s is a digit.
+template<typename Char>
+unsigned parse_nonnegative_int(const Char *&s)
+{
+ assert('0' <= *s && *s <= '9');
+ 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 + (*s - '0');
+ ++s;
+ } while ('0' <= *s && *s <= '9');
+ // Convert to unsigned to prevent a warning.
+ if (value > max_int)
+ FMT_THROW(FormatError("number is too big"));
+ return value;
+}
+
+inline void require_numeric_argument(const Arg &arg, char spec)
+{
+ if (arg.type > Arg::LAST_NUMERIC_TYPE)
+ {
+ std::string message = fmt::format("format specifier '{}' requires numeric argument", spec);
+ FMT_THROW(fmt::FormatError(message));
+ }
+}
+
+template<typename Char>
+void check_sign(const Char *&s, const Arg &arg)
+{
+ char sign = static_cast<char>(*s);
+ require_numeric_argument(arg, sign);
+ if (arg.type == Arg::UINT || arg.type == Arg::ULONG_LONG)
+ {
+ FMT_THROW(FormatError(fmt::format("format specifier '{}' requires signed argument", sign)));
+ }
+ ++s;
+}
+} // namespace internal
+
+template<typename Char, typename AF>
+inline internal::Arg BasicFormatter<Char, AF>::get_arg(BasicStringRef<Char> arg_name, const char *&error)
+{
+ if (check_no_auto_index(error))
+ {
+ map_.init(args());
+ const internal::Arg *arg = map_.find(arg_name);
+ if (arg)
+ return *arg;
+ error = "argument not found";
+ }
+ return internal::Arg();
+}
+
+template<typename Char, typename AF>
+inline internal::Arg BasicFormatter<Char, AF>::parse_arg_index(const Char *&s)
+{
+ const char *error = FMT_NULL;
+ internal::Arg arg = *s < '0' || *s > '9' ? next_arg(error) : get_arg(internal::parse_nonnegative_int(s), error);
+ if (error)
+ {
+ FMT_THROW(FormatError(*s != '}' && *s != ':' ? "invalid format string" : error));
+ }
+ return arg;
+}
+
+template<typename Char, typename AF>
+inline internal::Arg BasicFormatter<Char, AF>::parse_arg_name(const Char *&s)
+{
+ assert(internal::is_name_start(*s));
+ const Char *start = s;
+ Char c;
+ do
+ {
+ c = *++s;
+ } while (internal::is_name_start(c) || ('0' <= c && c <= '9'));
+ const char *error = FMT_NULL;
+ internal::Arg arg = get_arg(BasicStringRef<Char>(start, s - start), error);
+ if (error)
+ FMT_THROW(FormatError(error));
+ return arg;
+}
+
+template<typename Char, typename ArgFormatter>
+const Char *BasicFormatter<Char, ArgFormatter>::format(const Char *&format_str, const internal::Arg &arg)
+{
+ using internal::Arg;
+ const Char *s = format_str;
+ typename ArgFormatter::SpecType spec;
+ if (*s == ':')
+ {
+ if (arg.type == Arg::CUSTOM)
+ {
+ arg.custom.format(this, arg.custom.value, &s);
+ return s;
+ }
+ ++s;
+ // Parse fill and alignment.
+ if (Char c = *s)
+ {
+ const Char *p = s + 1;
+ spec.align_ = ALIGN_DEFAULT;
+ do
+ {
+ switch (*p)
+ {
+ case '<':
+ spec.align_ = ALIGN_LEFT;
+ break;
+ case '>':
+ spec.align_ = ALIGN_RIGHT;
+ break;
+ case '=':
+ spec.align_ = ALIGN_NUMERIC;
+ break;
+ case '^':
+ spec.align_ = ALIGN_CENTER;
+ break;
+ }
+ if (spec.align_ != ALIGN_DEFAULT)
+ {
+ if (p != s)
+ {
+ if (c == '}')
+ break;
+ if (c == '{')
+ FMT_THROW(FormatError("invalid fill character '{'"));
+ s += 2;
+ spec.fill_ = c;
+ }
+ else
+ ++s;
+ if (spec.align_ == ALIGN_NUMERIC)
+ require_numeric_argument(arg, '=');
+ break;
+ }
+ } while (--p >= s);
+ }
+
+ // Parse sign.
+ switch (*s)
+ {
+ case '+':
+ check_sign(s, arg);
+ spec.flags_ |= SIGN_FLAG | PLUS_FLAG;
+ break;
+ case '-':
+ check_sign(s, arg);
+ spec.flags_ |= MINUS_FLAG;
+ break;
+ case ' ':
+ check_sign(s, arg);
+ spec.flags_ |= SIGN_FLAG;
+ break;
+ }
+
+ if (*s == '#')
+ {
+ require_numeric_argument(arg, '#');
+ spec.flags_ |= HASH_FLAG;
+ ++s;
+ }
+
+ // Parse zero flag.
+ if (*s == '0')
+ {
+ require_numeric_argument(arg, '0');
+ spec.align_ = ALIGN_NUMERIC;
+ spec.fill_ = '0';
+ ++s;
+ }
+
+ // Parse width.
+ if ('0' <= *s && *s <= '9')
+ {
+ spec.width_ = internal::parse_nonnegative_int(s);
+ }
+ else if (*s == '{')
+ {
+ ++s;
+ Arg width_arg = internal::is_name_start(*s) ? parse_arg_name(s) : parse_arg_index(s);
+ if (*s++ != '}')
+ FMT_THROW(FormatError("invalid format string"));
+ ULongLong value = 0;
+ switch (width_arg.type)
+ {
+ case Arg::INT:
+ if (width_arg.int_value < 0)
+ FMT_THROW(FormatError("negative width"));
+ value = width_arg.int_value;
+ break;
+ case Arg::UINT:
+ value = width_arg.uint_value;
+ break;
+ case Arg::LONG_LONG:
+ if (width_arg.long_long_value < 0)
+ FMT_THROW(FormatError("negative width"));
+ value = width_arg.long_long_value;
+ break;
+ case Arg::ULONG_LONG:
+ value = width_arg.ulong_long_value;
+ break;
+ default:
+ FMT_THROW(FormatError("width is not integer"));
+ }
+ unsigned max_int = (std::numeric_limits<int>::max)();
+ if (value > max_int)
+ FMT_THROW(FormatError("number is too big"));
+ spec.width_ = static_cast<int>(value);
+ }
+
+ // Parse precision.
+ if (*s == '.')
+ {
+ ++s;
+ spec.precision_ = 0;
+ if ('0' <= *s && *s <= '9')
+ {
+ spec.precision_ = internal::parse_nonnegative_int(s);
+ }
+ else if (*s == '{')
+ {
+ ++s;
+ Arg precision_arg = internal::is_name_start(*s) ? parse_arg_name(s) : parse_arg_index(s);
+ if (*s++ != '}')
+ FMT_THROW(FormatError("invalid format string"));
+ ULongLong value = 0;
+ switch (precision_arg.type)
+ {
+ case Arg::INT:
+ if (precision_arg.int_value < 0)
+ FMT_THROW(FormatError("negative precision"));
+ value = precision_arg.int_value;
+ break;
+ case Arg::UINT:
+ value = precision_arg.uint_value;
+ break;
+ case Arg::LONG_LONG:
+ if (precision_arg.long_long_value < 0)
+ FMT_THROW(FormatError("negative precision"));
+ value = precision_arg.long_long_value;
+ break;
+ case Arg::ULONG_LONG:
+ value = precision_arg.ulong_long_value;
+ break;
+ default:
+ FMT_THROW(FormatError("precision is not integer"));
+ }
+ unsigned max_int = (std::numeric_limits<int>::max)();
+ if (value > max_int)
+ FMT_THROW(FormatError("number is too big"));
+ spec.precision_ = static_cast<int>(value);
+ }
+ else
+ {
+ FMT_THROW(FormatError("missing precision specifier"));
+ }
+ if (arg.type <= Arg::LAST_INTEGER_TYPE || arg.type == Arg::POINTER)
+ {
+ FMT_THROW(FormatError(
+ fmt::format("precision not allowed in {} format specifier", arg.type == Arg::POINTER ? "pointer" : "integer")));
+ }
+ }
+
+ // Parse type.
+ if (*s != '}' && *s)
+ spec.type_ = static_cast<char>(*s++);
+ }
+
+ if (*s++ != '}')
+ FMT_THROW(FormatError("missing '}' in format string"));
+
+ // Format argument.
+ ArgFormatter(*this, spec, s - 1).visit(arg);
+ return s;
+}
+
+template<typename Char, typename AF>
+void BasicFormatter<Char, AF>::format(BasicCStringRef<Char> format_str)
+{
+ const Char *s = format_str.c_str();
+ const Char *start = s;
+ while (*s)
+ {
+ Char c = *s++;
+ if (c != '{' && c != '}')
+ continue;
+ if (*s == c)
+ {
+ write(writer_, start, s);
+ start = ++s;
+ continue;
+ }
+ if (c == '}')
+ FMT_THROW(FormatError("unmatched '}' in format string"));
+ write(writer_, start, s - 1);
+ internal::Arg arg = internal::is_name_start(*s) ? parse_arg_name(s) : parse_arg_index(s);
+ start = s = format(s, arg);
+ }
+ write(writer_, start, s);
+}
+
+template<typename Char, typename It>
+struct ArgJoin
+{
+ It first;
+ It last;
+ BasicCStringRef<Char> sep;
+
+ ArgJoin(It first, It last, const BasicCStringRef<Char> &sep)
+ : first(first)
+ , last(last)
+ , sep(sep)
+ {
+ }
+};
+
+template<typename It>
+ArgJoin<char, It> join(It first, It last, const BasicCStringRef<char> &sep)
+{
+ return ArgJoin<char, It>(first, last, sep);
+}
+
+template<typename It>
+ArgJoin<wchar_t, It> join(It first, It last, const BasicCStringRef<wchar_t> &sep)
+{
+ return ArgJoin<wchar_t, It>(first, last, sep);
+}
+
+#if FMT_HAS_GXX_CXX11
+template<typename Range>
+auto join(const Range &range, const BasicCStringRef<char> &sep) -> ArgJoin<char, decltype(std::begin(range))>
+{
+ return join(std::begin(range), std::end(range), sep);
+}
+
+template<typename Range>
+auto join(const Range &range, const BasicCStringRef<wchar_t> &sep) -> ArgJoin<wchar_t, decltype(std::begin(range))>
+{
+ return join(std::begin(range), std::end(range), sep);
+}
+#endif
+
+template<typename ArgFormatter, typename Char, typename It>
+void format_arg(fmt::BasicFormatter<Char, ArgFormatter> &f, const Char *&format_str, const ArgJoin<Char, It> &e)
+{
+ const Char *end = format_str;
+ if (*end == ':')
+ ++end;
+ while (*end && *end != '}')
+ ++end;
+ if (*end != '}')
+ FMT_THROW(FormatError("missing '}' in format string"));
+
+ It it = e.first;
+ if (it != e.last)
+ {
+ const Char *save = format_str;
+ f.format(format_str, internal::MakeArg<fmt::BasicFormatter<Char, ArgFormatter>>(*it++));
+ while (it != e.last)
+ {
+ f.writer().write(e.sep);
+ format_str = save;
+ f.format(format_str, internal::MakeArg<fmt::BasicFormatter<Char, ArgFormatter>>(*it++));
+ }
+ }
+ format_str = end + 1;
+}
+} // namespace fmt
+
+#if FMT_USE_USER_DEFINED_LITERALS
+namespace fmt {
+namespace internal {
+
+template<typename Char>
+struct UdlFormat
+{
+ const Char *str;
+
+ template<typename... Args>
+ auto operator()(Args &&... args) const -> decltype(format(str, std::forward<Args>(args)...))
+ {
+ return format(str, std::forward<Args>(args)...);
+ }
+};
+
+template<typename Char>
+struct UdlArg
+{
+ const Char *str;
+
+ template<typename T>
+ NamedArgWithType<Char, T> operator=(T &&value) const
+ {
+ return {str, std::forward<T>(value)};
+ }
+};
+
+} // namespace internal
+
+inline namespace literals {
+
+/**
+ \rst
+ C++11 literal equivalent of :func:`fmt::format`.
+
+ **Example**::
+
+ using namespace fmt::literals;
+ std::string message = "The answer is {}"_format(42);
+ \endrst
+ */
+inline internal::UdlFormat<char> operator"" _format(const char *s, std::size_t)
+{
+ return {s};
+}
+inline internal::UdlFormat<wchar_t> operator"" _format(const wchar_t *s, std::size_t)
+{
+ return {s};
+}
+
+/**
+ \rst
+ C++11 literal equivalent of :func:`fmt::arg`.
+
+ **Example**::
+
+ using namespace fmt::literals;
+ print("Elapsed time: {s:.2f} seconds", "s"_a=1.23);
+ \endrst
+ */
+inline internal::UdlArg<char> operator"" _a(const char *s, std::size_t)
+{
+ return {s};
+}
+inline internal::UdlArg<wchar_t> operator"" _a(const wchar_t *s, std::size_t)
+{
+ return {s};
+}
+
+} // namespace literals
+} // namespace fmt
+#endif // FMT_USE_USER_DEFINED_LITERALS
+
+// Restore warnings.
+#if FMT_GCC_VERSION >= 406
+#pragma GCC diagnostic pop
+#endif
+
+#if defined(__clang__) && !defined(FMT_ICC_VERSION)
+#pragma clang diagnostic pop
+#endif
+
+#ifdef FMT_HEADER_ONLY
+#define FMT_FUNC inline
+#include "format.cc"
+#else
+#define FMT_FUNC
+#endif
+
+#endif // FMT_FORMAT_H_