[lttng-tools.git] / src / common / format.hpp

/*
 * Copyright (C) 2022 Jérémie Galarneau <jeremie.galarneau@efficios.com>
 *
 * SPDX-License-Identifier: LGPL-2.1-only
 *
 */
#ifndef LTTNG_FORMAT_H
#define LTTNG_FORMAT_H

#include <common/macros.hpp>

#include <string>
#include <cxxabi.h>

DIAGNOSTIC_PUSH
DIAGNOSTIC_IGNORE_SUGGEST_ATTRIBUTE_FORMAT
DIAGNOSTIC_IGNORE_DUPLICATED_BRANCHES
#define FMT_HEADER_ONLY
#include <vendor/fmt/core.h>
DIAGNOSTIC_POP

/*
 * Due to a bug in g++ < 7.1, this specialization must be enclosed in the fmt namespace,
 * see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56480.
 */
namespace fmt {
template <>
struct formatter<std::type_info> : formatter<std::string> {
	template <typename FormatContextType>
	typename FormatContextType::iterator format(const std::type_info& type_info,
						    FormatContextType& ctx)
	{
		int status;
		auto demangled_name =
			abi::__cxa_demangle(type_info.name(), nullptr, nullptr, &status);
		auto it = status == 0 ? formatter<std::string>::format(demangled_name, ctx) :
					formatter<std::string>::format(type_info.name(), ctx);

		free(demangled_name);
		return it;
	}
};
} /* namespace fmt */

#endif /* LTTNG_FORMAT_H */
Commit	Line	Data
	1	/*
	2	* Copyright (C) 2022 Jérémie Galarneau <jeremie.galarneau@efficios.com>
	3	*
	4	* SPDX-License-Identifier: LGPL-2.1-only
	5	*
	6	*/
	7	#ifndef LTTNG_FORMAT_H
	8	#define LTTNG_FORMAT_H
	9
	10	#include <common/macros.hpp>
	11
	12	#include <string>
	13	#include <cxxabi.h>
	14
	15	DIAGNOSTIC_PUSH
	16	DIAGNOSTIC_IGNORE_SUGGEST_ATTRIBUTE_FORMAT
	17	DIAGNOSTIC_IGNORE_DUPLICATED_BRANCHES
	18	#define FMT_HEADER_ONLY
	19	#include <vendor/fmt/core.h>
	20	DIAGNOSTIC_POP
	21
	22	/*
	23	* Due to a bug in g++ < 7.1, this specialization must be enclosed in the fmt namespace,
	24	* see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56480.
	25	*/
	26	namespace fmt {
	27	template <>
	28	struct formatter<std::type_info> : formatter<std::string> {
	29	template <typename FormatContextType>
	30	typename FormatContextType::iterator format(const std::type_info& type_info,
	31	FormatContextType& ctx)
	32	{
	33	int status;
	34	auto demangled_name =
	35	abi::__cxa_demangle(type_info.name(), nullptr, nullptr, &status);
	36	auto it = status == 0 ? formatter<std::string>::format(demangled_name, ctx) :
	37	formatter<std::string>::format(type_info.name(), ctx);
	38
	39	free(demangled_name);
	40	return it;
	41	}
	42	};
	43	} /* namespace fmt */
	44
	45	#endif /* LTTNG_FORMAT_H */