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Implement the s specifier for error_code

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This commit is contained in:
Victor Zverovich
2025-04-27 08:51:18 -07:00
parent e98155a6fb
commit a7d7b894cd
2 changed files with 26 additions and 18 deletions
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18
include/fmt/std.h
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@@ -422,6 +422,12 @@ template <> struct formatter<std::error_code> {
char c = *it;
if ((c >= '0' && c <= '9') || c == '{')
it = detail::parse_width(it, end, specs_, width_ref_, ctx);
if (it == end) return it;
if (*it == 's') {
specs_.set_type(presentation_type::string);
++it;
}
return it;
}
@@ -431,10 +437,14 @@ template <> struct formatter<std::error_code> {
auto specs = specs_;
detail::handle_dynamic_spec(specs.dynamic_width(), specs.width, width_ref_,
ctx);
memory_buffer buf;
buf.append(string_view(ec.category().name()));
buf.push_back(':');
detail::write<char>(appender(buf), ec.value());
auto buf = memory_buffer();
if (specs_.type() == presentation_type::string) {
buf.append(ec.message());
} else {
buf.append(string_view(ec.category().name()));
buf.push_back(':');
detail::write<char>(appender(buf), ec.value());
}
return detail::write<char>(ctx.out(), string_view(buf.data(), buf.size()),
specs);
}