| /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
| #pragma once |
| |
| #include <printf.h> |
| #include <stdarg.h> |
| #include <stdio.h> |
| #include <sys/types.h> |
| |
| #include "macro.h" |
| |
| _printf_(3, 4) |
| static inline char *snprintf_ok(char *buf, size_t len, const char *format, ...) { |
| va_list ap; |
| int r; |
| |
| va_start(ap, format); |
| DISABLE_WARNING_FORMAT_NONLITERAL; |
| r = vsnprintf(buf, len, format, ap); |
| REENABLE_WARNING; |
| va_end(ap); |
| |
| return r >= 0 && (size_t) r < len ? buf : NULL; |
| } |
| |
| #define xsprintf(buf, fmt, ...) \ |
| assert_message_se(snprintf_ok(buf, ELEMENTSOF(buf), fmt, ##__VA_ARGS__), "xsprintf: " #buf "[] must be big enough") |
| |
| #define VA_FORMAT_ADVANCE(format, ap) \ |
| do { \ |
| int _argtypes[128]; \ |
| size_t _i, _k; \ |
| /* See https://github.com/google/sanitizers/issues/992 */ \ |
| if (HAS_FEATURE_MEMORY_SANITIZER) \ |
| memset(_argtypes, 0, sizeof(_argtypes)); \ |
| _k = parse_printf_format((format), ELEMENTSOF(_argtypes), _argtypes); \ |
| assert(_k < ELEMENTSOF(_argtypes)); \ |
| for (_i = 0; _i < _k; _i++) { \ |
| if (_argtypes[_i] & PA_FLAG_PTR) { \ |
| (void) va_arg(ap, void*); \ |
| continue; \ |
| } \ |
| \ |
| switch (_argtypes[_i]) { \ |
| case PA_INT: \ |
| case PA_INT|PA_FLAG_SHORT: \ |
| case PA_CHAR: \ |
| (void) va_arg(ap, int); \ |
| break; \ |
| case PA_INT|PA_FLAG_LONG: \ |
| (void) va_arg(ap, long int); \ |
| break; \ |
| case PA_INT|PA_FLAG_LONG_LONG: \ |
| (void) va_arg(ap, long long int); \ |
| break; \ |
| case PA_WCHAR: \ |
| (void) va_arg(ap, wchar_t); \ |
| break; \ |
| case PA_WSTRING: \ |
| case PA_STRING: \ |
| case PA_POINTER: \ |
| (void) va_arg(ap, void*); \ |
| break; \ |
| case PA_FLOAT: \ |
| case PA_DOUBLE: \ |
| (void) va_arg(ap, double); \ |
| break; \ |
| case PA_DOUBLE|PA_FLAG_LONG_DOUBLE: \ |
| (void) va_arg(ap, long double); \ |
| break; \ |
| default: \ |
| assert_not_reached(); \ |
| } \ |
| } \ |
| } while (false) |