diff options
Diffstat (limited to 'src/libstrongswan/utils/utils.h')
| -rw-r--r-- | src/libstrongswan/utils/utils.h | 48 |
1 files changed, 46 insertions, 2 deletions
diff --git a/src/libstrongswan/utils/utils.h b/src/libstrongswan/utils/utils.h index 0aed842b1..33b8d1956 100644 --- a/src/libstrongswan/utils/utils.h +++ b/src/libstrongswan/utils/utils.h @@ -1,7 +1,7 @@ /* - * Copyright (C) 2008-2015 Tobias Brunner + * Copyright (C) 2008-2017 Tobias Brunner * Copyright (C) 2008 Martin Willi - * Hochschule fuer Technik Rapperswil + * HSR Hochschule fuer Technik Rapperswil * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the @@ -28,6 +28,7 @@ #include <stddef.h> #include <sys/time.h> #include <string.h> +#include <stdarg.h> #ifdef HAVE_SYS_PARAM_H #include <sys/param.h> @@ -141,6 +142,49 @@ void utils_deinit(); #define __VA_ARGS_DISPATCH(func, num) func ## num /** + * Assign variadic arguments to the given variables. + * + * @note The order and types of the variables are significant and must match the + * variadic arguments passed to the function that calls this macro exactly. + * + * @param last the last argument before ... in the function that calls this + * @param ... variable names + */ +#define VA_ARGS_GET(last, ...) ({ \ + va_list _va_args_get_ap; \ + va_start(_va_args_get_ap, last); \ + _VA_ARGS_GET_ASGN(__VA_ARGS__) \ + va_end(_va_args_get_ap); \ +}) + +/** + * Assign variadic arguments from a va_list to the given variables. + * + * @note The order and types of the variables are significant and must match the + * variadic arguments passed to the function that calls this macro exactly. + * + * @param list the va_list variable in the function that calls this + * @param ... variable names + */ +#define VA_ARGS_VGET(list, ...) ({ \ + va_list _va_args_get_ap; \ + va_copy(_va_args_get_ap, list); \ + _VA_ARGS_GET_ASGN(__VA_ARGS__) \ + va_end(_va_args_get_ap); \ +}) + +#define _VA_ARGS_GET_ASGN(...) VA_ARGS_DISPATCH(_VA_ARGS_GET_ASGN, __VA_ARGS__)(__VA_ARGS__) +#define _VA_ARGS_GET_ASGN1(v1) __VA_ARGS_GET_ASGN(v1) +#define _VA_ARGS_GET_ASGN2(v1,v2) __VA_ARGS_GET_ASGN(v1) __VA_ARGS_GET_ASGN(v2) +#define _VA_ARGS_GET_ASGN3(v1,v2,v3) __VA_ARGS_GET_ASGN(v1) __VA_ARGS_GET_ASGN(v2) \ + __VA_ARGS_GET_ASGN(v3) +#define _VA_ARGS_GET_ASGN4(v1,v2,v3,v4) __VA_ARGS_GET_ASGN(v1) __VA_ARGS_GET_ASGN(v2) \ + __VA_ARGS_GET_ASGN(v3) __VA_ARGS_GET_ASGN(v4) +#define _VA_ARGS_GET_ASGN5(v1,v2,v3,v4,v5) __VA_ARGS_GET_ASGN(v1) __VA_ARGS_GET_ASGN(v2) \ + __VA_ARGS_GET_ASGN(v3) __VA_ARGS_GET_ASGN(v4) __VA_ARGS_GET_ASGN(v5) +#define __VA_ARGS_GET_ASGN(v) v = va_arg(_va_args_get_ap, typeof(v)); + +/** * Macro to allocate a sized type. */ #define malloc_thing(thing) ((thing*)malloc(sizeof(thing))) |