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Improve handling of format specs

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This commit is contained in:
Victor Zverovich
2024-01-15 05:56:15 -08:00
parent c98a5a599f
commit f9294f0e60
7 changed files with 129 additions and 133 deletions
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43
include/fmt/printf.h
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@@ -373,7 +373,7 @@ auto parse_header(const Char*& it, const Char* end, format_specs<Char>& specs,
return arg_index;
}
inline auto parse_printf_presentation_type(char c, type t)
inline auto parse_printf_presentation_type(char c, type t, bool& upper)
-> presentation_type {
using pt = presentation_type;
constexpr auto integral_set = sint_set | uint_set | bool_set | char_set;
@@ -382,26 +382,31 @@ inline auto parse_printf_presentation_type(char c, type t)
return in(t, integral_set) ? pt::dec : pt::none;
case 'o':
return in(t, integral_set) ? pt::oct : pt::none;
case 'x':
return in(t, integral_set) ? pt::hex_lower : pt::none;
case 'X':
return in(t, integral_set) ? pt::hex_upper : pt::none;
case 'a':
return in(t, float_set) ? pt::hexfloat_lower : pt::none;
case 'A':
return in(t, float_set) ? pt::hexfloat_upper : pt::none;
case 'e':
return in(t, float_set) ? pt::exp_lower : pt::none;
upper = true;
FMT_FALLTHROUGH;
case 'x':
return in(t, integral_set) ? pt::hex : pt::none;
case 'E':
return in(t, float_set) ? pt::exp_upper : pt::none;
case 'f':
return in(t, float_set) ? pt::fixed_lower : pt::none;
upper = true;
FMT_FALLTHROUGH;
case 'e':
return in(t, float_set) ? pt::exp : pt::none;
case 'F':
return in(t, float_set) ? pt::fixed_upper : pt::none;
case 'g':
return in(t, float_set) ? pt::general_lower : pt::none;
upper = true;
FMT_FALLTHROUGH;
case 'f':
return in(t, float_set) ? pt::fixed : pt::none;
case 'G':
return in(t, float_set) ? pt::general_upper : pt::none;
upper = true;
FMT_FALLTHROUGH;
case 'g':
return in(t, float_set) ? pt::general : pt::none;
case 'A':
upper = true;
FMT_FALLTHROUGH;
case 'a':
return in(t, float_set) ? pt::hexfloat : pt::none;
case 'c':
return in(t, integral_set) ? pt::chr : pt::none;
case 's':
@@ -548,9 +553,11 @@ void vprintf(buffer<Char>& buf, basic_string_view<Char> format,
break;
}
}
specs.type = parse_printf_presentation_type(type, arg.type());
bool upper = false;
specs.type = parse_printf_presentation_type(type, arg.type(), upper);
if (specs.type == presentation_type::none)
throw_format_error("invalid format specifier");
specs.upper = upper;
start = it;