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Posted to commits@nifi.apache.org by al...@apache.org on 2017/05/31 15:10:22 UTC
[02/10] nifi-minifi-cpp git commit: MINIFI-296 - Configurable logging,
spdlog 0.13.0
http://git-wip-us.apache.org/repos/asf/nifi-minifi-cpp/blob/73ecc667/thirdparty/spdlog-0.13.0/include/spdlog/fmt/bundled/format.h
----------------------------------------------------------------------
diff --git a/thirdparty/spdlog-0.13.0/include/spdlog/fmt/bundled/format.h b/thirdparty/spdlog-0.13.0/include/spdlog/fmt/bundled/format.h
new file mode 100644
index 0000000..64c949b
--- /dev/null
+++ b/thirdparty/spdlog-0.13.0/include/spdlog/fmt/bundled/format.h
@@ -0,0 +1,4501 @@
+/*
+ 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_
+
+#include <cassert>
+#include <clocale>
+#include <cmath>
+#include <cstdio>
+#include <cstring>
+#include <limits>
+#include <memory>
+#include <stdexcept>
+#include <string>
+#include <vector>
+#include <utility>
+
+#ifdef _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_EXTENSION
+#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)
+# 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
+
+#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 FMT_USE_RVALUE_REFERENCES
+# include <utility> // for std::move
+#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
+
+#ifndef FMT_NOEXCEPT
+# if FMT_EXCEPTIONS
+# if FMT_USE_NOEXCEPT || FMT_HAS_FEATURE(cxx_noexcept) || \
+ (FMT_GCC_VERSION >= 408 && FMT_HAS_GXX_CXX11) || \
+ FMT_MSC_VER >= 1900
+# define FMT_NOEXCEPT noexcept
+# else
+# define FMT_NOEXCEPT throw()
+# endif
+# else
+# define FMT_NOEXCEPT
+# endif
+#endif
+
+#ifndef FMT_OVERRIDE
+# if 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
+
+
+// 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_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.
+# define FMT_USE_USER_DEFINED_LITERALS \
+ 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)
+#endif
+
+#ifndef FMT_ASSERT
+# define FMT_ASSERT(condition, message) assert((condition) && message)
+#endif
+
+#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
+
+// 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)
+# include <intrin.h> // _BitScanReverse, _BitScanReverse64
+
+namespace fmt
+{
+namespace internal
+{
+# pragma intrinsic(_BitScanReverse)
+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)
+
+# ifdef _WIN64
+# 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)
+}
+}
+#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 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(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;
+
+template <typename CharType,
+ typename ArgFormatter = fmt::ArgFormatter<CharType> >
+class BasicFormatter;
+
+/**
+ \rst
+ A string reference. It can be constructed from a C string or ``std::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 an ``std::string`` object.
+ \endrst
+ */
+ BasicStringRef(const std::basic_string<Char> &s)
+ : data_(s.c_str()), size_(s.size()) {}
+
+ /**
+ \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::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 an ``std::string`` object.
+ \endrst
+ */
+ BasicCStringRef(const std::basic_string<Char> &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() throw();
+};
+
+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 = 0, 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)
+{
+ std::size_t new_size = size_ + internal::to_unsigned(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()
+ {
+ 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;
+ T *new_ptr = this->allocate(new_capacity);
+ // 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);
+};
+
+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);
+};
+
+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);
+};
+
+// 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 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[];
+};
+
+#ifndef FMT_USE_EXTERN_TEMPLATES
+// Clang doesn't have a feature check for extern templates so we check
+// for variadic templates which were introduced in the same version.
+# define FMT_USE_EXTERN_TEMPLATES (__clang__ && FMT_USE_VARIADIC_TEMPLATES)
+#endif
+
+#if FMT_USE_EXTERN_TEMPLATES && !defined(FMT_HEADER_ONLY)
+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)
+{
+ return format_decimal(buffer, value, num_digits, NoThousandsSep());
+}
+
+#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
+
+FMT_API void format_system_error(fmt::Writer &out, int error_code,
+ fmt::StringRef message) FMT_NOEXCEPT;
+
+// 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 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(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, 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 "";
+}
+
+// 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);
+ 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(*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 !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)
+ 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)
+ 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>
+ MakeValue(const T &value,
+ typename EnableIf<ConvertToInt<T>::value, int>::type = 0)
+ {
+ int_value = value;
+ }
+
+ template <typename T>
+ static uint64_t type(const T &)
+ {
+ return ConvertToInt<T>::value ? Arg::INT : 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_>
+ static uint64_t type(const NamedArg<Char_> &)
+ {
+ 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) {}
+};
+
+class RuntimeError : public std::runtime_error
+{
+protected:
+ RuntimeError() : std::runtime_error("") {}
+ ~RuntimeError() throw();
+};
+
+template <typename Char>
+class PrintfArgFormatter;
+
+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
+ {
+ unsigned shift = index * 4;
+ uint64_t mask = 0xf;
+ return static_cast<internal::Arg::Type>(
+ (types_ & (mask << shift)) >> shift);
+ }
+
+ 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) {}
+
+ /** 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];
+ }
+};
+
+#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 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;
+ }
+};
+
+// 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_;
+ }
+};
+
+// 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:
+ FMT_API 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 0;
+ }
+};
+
+template <typename Impl, typename Char>
+class ArgFormatterBase : public ArgVisitor<Impl, void>
+{
+private:
+ BasicWriter<Char> &writer_;
+ FormatSpec &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_);
+ }
+
+protected:
+ BasicWriter<Char> &writer()
+ {
+ return writer_;
+ }
+ FormatSpec &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 != 0 ? std::strlen(value) : 0};
+ writer_.write_str(str, spec_);
+ }
+
+public:
+ ArgFormatterBase(BasicWriter<Char> &w, FormatSpec &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_)
+ return visit_any_int(value);
+ 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);
+ }
+
+ void visit_string(Arg::StringValue<char> value)
+ {
+ writer_.write_str(value, spec_);
+ }
+
+ using ArgVisitor<Impl, void>::visit_wstring;
+
+ void visit_wstring(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));
+ }
+};
+
+// A printf formatter.
+template <typename Char>
+class PrintfFormatter : private FormatterBase
+{
+private:
+ void parse_flags(FormatSpec &spec, const Char *&s);
+
+ // Returns the argument with specified index or, if arg_index is equal
+ // to the maximum unsigned value, the next argument.
+ Arg get_arg(const Char *s,
+ unsigned arg_index = (std::numeric_limits<unsigned>::max)());
+
+ // Parses argument index, flags and width and returns the argument index.
+ unsigned parse_header(const Char *&s, FormatSpec &spec);
+
+public:
+ explicit PrintfFormatter(const ArgList &args) : FormatterBase(args) {}
+ FMT_API void format(BasicWriter<Char> &writer,
+ BasicCStringRef<Char> format_str);
+};
+} // 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>
+class BasicArgFormatter : public internal::ArgFormatterBase<Impl, Char>
+{
+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,
+ FormatSpec &spec, const Char *fmt)
+ : internal::ArgFormatterBase<Impl, Char>(formatter.writer(), spec),
+ formatter_(formatter), format_(fmt) {}
+
+ /** Formats 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>
+{
+public:
+ /** Constructs an argument formatter object. */
+ ArgFormatter(BasicFormatter<Char> &formatter,
+ FormatSpec &spec, const Char *fmt)
+ : BasicArgFormatter<ArgFormatter<Char>, Char>(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 <unsigned N, bool/*IsPacked*/= (N < ArgList::MAX_PACKED_ARGS)>
+ struct ArgArray;
+
+template <unsigned N>
+struct ArgArray<N, true/*IsPacked*/>
+{
+ 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 <unsigned 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:
+ 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 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 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.
+
+ **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_VARIADIC_CTOR(SystemError, init, int, CStringRef)
+
+ ~SystemError() throw();
+
+ int error_code() const
+ {
+ return error_code_;
+ }
+};
+
+/**
+ \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>
+ void write_double(T value, const FormatSpec &spec);
+
+ // Writes a formatted string.
+ template <typename StrChar>
+ CharPtr write_str(const StrChar *s, std::size_t size, const AlignSpec &spec);
+
+ template <typename StrChar>
+ void write_str(const internal::Arg::StringValue<StrChar> &str,
+ const FormatSpec &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_>
+ friend class internal::ArgFormatterBase;
+
+ friend class internal::PrintfArgFormatter<Char>;
+
+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>
+void BasicWriter<Char>::write_str(
+ const internal::Arg::StringValue<StrChar> &s, const FormatSpec &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::
<TRUNCATED>