forked from fmtlib/fmt
118 lines
4.2 KiB
C++
118 lines
4.2 KiB
C++
// Formatting library for C++
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//
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// Copyright (c) 2012 - 2016, Victor Zverovich
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// All rights reserved.
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//
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// For the license information refer to format.h.
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#include "fmt/format-inl.h"
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FMT_BEGIN_NAMESPACE
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namespace internal {
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template <typename T>
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int format_float(char* buf, std::size_t size, const char* format, int precision,
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T value) {
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#ifdef FMT_FUZZ
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if (precision > 100000)
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throw std::runtime_error(
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"fuzz mode - avoid large allocation inside snprintf");
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#endif
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// Suppress the warning about nonliteral format string.
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int (*snprintf_ptr)(char*, size_t, const char*, ...) = FMT_SNPRINTF;
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return precision < 0 ? snprintf_ptr(buf, size, format, value)
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: snprintf_ptr(buf, size, format, precision, value);
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}
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// DEPRECATED.
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template <typename Context> class arg_map {
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private:
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struct entry {
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basic_string_view<typename Context::char_type> name;
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basic_format_arg<Context> arg;
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};
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entry* map_;
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unsigned size_;
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void push_back(value<Context> val) {
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const auto& named = *val.named_arg;
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map_[size_] = {named.name, named.template deserialize<Context>()};
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++size_;
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}
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public:
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void init(const basic_format_args<Context>& args);
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};
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// This is deprecated and is kept only to preserve ABI compatibility.
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template <typename Context>
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void arg_map<Context>::init(const basic_format_args<Context>& args) {
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if (map_) return;
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map_ = new entry[internal::to_unsigned(args.max_size())];
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if (args.is_packed()) {
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for (int i = 0;; ++i) {
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internal::type arg_type = args.type(i);
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if (arg_type == internal::type::none_type) return;
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if (arg_type == internal::type::named_arg_type)
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push_back(args.values_[i]);
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}
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}
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for (int i = 0, n = args.max_size(); i < n; ++i) {
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auto type = args.args_[i].type_;
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if (type == internal::type::named_arg_type) push_back(args.args_[i].value_);
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}
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}
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} // namespace internal
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template struct FMT_INSTANTIATION_DEF_API internal::basic_data<void>;
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// Workaround a bug in MSVC2013 that prevents instantiation of format_float.
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int (*instantiate_format_float)(double, int, internal::float_specs,
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internal::buffer<char>&) =
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internal::format_float;
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#ifndef FMT_STATIC_THOUSANDS_SEPARATOR
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template FMT_API internal::locale_ref::locale_ref(const std::locale& loc);
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template FMT_API std::locale internal::locale_ref::get<std::locale>() const;
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#endif
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// Explicit instantiations for char.
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template FMT_API std::string internal::grouping_impl<char>(locale_ref);
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template FMT_API char internal::thousands_sep_impl(locale_ref);
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template FMT_API char internal::decimal_point_impl(locale_ref);
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template FMT_API void internal::buffer<char>::append(const char*, const char*);
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template FMT_API void internal::arg_map<format_context>::init(
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const basic_format_args<format_context>& args);
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template FMT_API std::string internal::vformat<char>(
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string_view, basic_format_args<format_context>);
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template FMT_API format_context::iterator internal::vformat_to(
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internal::buffer<char>&, string_view, basic_format_args<format_context>);
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template FMT_API int internal::snprintf_float(double, int,
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internal::float_specs,
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internal::buffer<char>&);
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template FMT_API int internal::snprintf_float(long double, int,
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internal::float_specs,
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internal::buffer<char>&);
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template FMT_API int internal::format_float(double, int, internal::float_specs,
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internal::buffer<char>&);
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template FMT_API int internal::format_float(long double, int,
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internal::float_specs,
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internal::buffer<char>&);
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// Explicit instantiations for wchar_t.
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template FMT_API std::string internal::grouping_impl<wchar_t>(locale_ref);
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template FMT_API wchar_t internal::thousands_sep_impl(locale_ref);
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template FMT_API wchar_t internal::decimal_point_impl(locale_ref);
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template FMT_API void internal::buffer<wchar_t>::append(const wchar_t*,
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const wchar_t*);
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FMT_END_NAMESPACE
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