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author | Yves-Alexis Perez <corsac@debian.org> | 2015-04-11 22:03:59 +0200 |
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committer | Yves-Alexis Perez <corsac@debian.org> | 2015-04-11 22:03:59 +0200 |
commit | 83b8aebb19fe6e49e13a05d4e8f5ab9a06177642 (patch) | |
tree | 51255545ba43b84aa5d673bd0eb557cbd0155c9e /src/libstrongswan/utils/enum.h | |
parent | 2b8de74ff4c334c25e89988c4a401b24b5bcf03d (diff) | |
download | vyos-strongswan-83b8aebb19fe6e49e13a05d4e8f5ab9a06177642.tar.gz vyos-strongswan-83b8aebb19fe6e49e13a05d4e8f5ab9a06177642.zip |
Imported Upstream version 5.3.0
Diffstat (limited to 'src/libstrongswan/utils/enum.h')
-rw-r--r-- | src/libstrongswan/utils/enum.h | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/src/libstrongswan/utils/enum.h b/src/libstrongswan/utils/enum.h index 3c03c2a7b..928f4079a 100644 --- a/src/libstrongswan/utils/enum.h +++ b/src/libstrongswan/utils/enum.h @@ -27,6 +27,11 @@ typedef struct enum_name_t enum_name_t; /** + * Magic enum_name_t pointer indicating this is an enum name for flags + */ +#define ENUM_FLAG_MAGIC ((enum_name_t*)~(uintptr_t)0) + +/** * Struct to store names for enums. * * To print the string representation of enumeration values, the strings @@ -58,7 +63,7 @@ struct enum_name_t { int first; /** value of the last enum string */ int last; - /** next enum_name_t in list */ + /** next enum_name_t in list, or ENUM_FLAG_MAGIC */ enum_name_t *next; /** array of strings containing names from first to last */ char *names[]; @@ -107,6 +112,23 @@ struct enum_name_t { #define ENUM(name, first, last, ...) ENUM_BEGIN(name, first, last, __VA_ARGS__); ENUM_END(name, last) /** + * Define a enum name with only one range for flags. + * + * Using an enum list for flags would be overkill. Hence we use a single + * range with all values in range. The next pointer is abused to mark + * that the enum name is for flags only. Use NULL if a particular flag + * is not meant to be printed. + * + * @param name name of the enum_name list + * @param first enum value of the first enum string + * @param last enum value of the last enum string + * @param ... a list of strings + */ +#define ENUM_FLAGS(name, first, last, ...) \ + static enum_name_t name##last = {first, last, ENUM_FLAG_MAGIC, { __VA_ARGS__ }}; \ + ENUM_END(name, last) + +/** * Convert a enum value to its string representation. * * @param e enum names for this enum value @@ -146,6 +168,17 @@ char *enum_to_name(enum_name_t *e, int val); bool enum_from_name_as_int(enum_name_t *e, const char *name, int *val); /** + * Convert a enum value containing flags to its string representation. + * + * @param e enum names for this enum value suitable for flags + * @param val enum value to get string for + * @param buf buffer to write flag string to + * @param len buffer size + * @return buf, NULL if buffer too small + */ +char *enum_flags_to_string(enum_name_t *e, u_int val, char *buf, size_t len); + +/** * printf hook function for enum_names_t. * * Arguments are: |