diff options
| author | Lennart Poettering <lennart@poettering.net> | 2016-01-05 17:10:17 +0100 |
|---|---|---|
| committer | Sven Eden <yamakuzure@gmx.net> | 2017-05-17 15:22:15 +0200 |
| commit | d7ef73f05df04d2b6d59932fd3d21f155665a888 (patch) | |
| tree | 03e56d0efb3cb189654cc982109c8d3a98eb1fc0 /src/basic | |
| parent | cda31ba58ea9360348d0b3b341b3155d65502405 (diff) | |
basic: add string table macros for "extended boolean" enums
In a couple of cases we maintain configuration settings that know an on
and off state, like a boolean, plus some additional states. We generally
parse them as booleans first, and if that fails check for specific
additional values.
This adds a generalized set of macros for parsing such settings, and
ports one use in resolved and another in networkd over to it.
Diffstat (limited to 'src/basic')
| -rw-r--r-- | src/basic/string-table.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/basic/string-table.h b/src/basic/string-table.h index 51b600721..53a2c02f6 100644 --- a/src/basic/string-table.h +++ b/src/basic/string-table.h @@ -46,16 +46,34 @@ ssize_t string_table_lookup(const char * const *table, size_t len, const char *k return (type) string_table_lookup(name##_table, ELEMENTSOF(name##_table), s); \ } +#define _DEFINE_STRING_TABLE_LOOKUP_FROM_STRING_WITH_BOOLEAN(name,type,yes,scope) \ + scope type name##_from_string(const char *s) { \ + int b; \ + b = parse_boolean(s); \ + if (b == 0) \ + return (type) 0; \ + else if (b > 0) \ + return yes; \ + return (type) string_table_lookup(name##_table, ELEMENTSOF(name##_table), s); \ + } + #define _DEFINE_STRING_TABLE_LOOKUP(name,type,scope) \ _DEFINE_STRING_TABLE_LOOKUP_TO_STRING(name,type,scope) \ _DEFINE_STRING_TABLE_LOOKUP_FROM_STRING(name,type,scope) \ struct __useless_struct_to_allow_trailing_semicolon__ +#define _DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(name,type,yes,scope) \ + _DEFINE_STRING_TABLE_LOOKUP_TO_STRING(name,type,scope) \ + _DEFINE_STRING_TABLE_LOOKUP_FROM_STRING_WITH_BOOLEAN(name,type,yes,scope) \ + struct __useless_struct_to_allow_trailing_semicolon__ + #define DEFINE_STRING_TABLE_LOOKUP(name,type) _DEFINE_STRING_TABLE_LOOKUP(name,type,) #define DEFINE_PRIVATE_STRING_TABLE_LOOKUP(name,type) _DEFINE_STRING_TABLE_LOOKUP(name,type,static) #define DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(name,type) _DEFINE_STRING_TABLE_LOOKUP_TO_STRING(name,type,static) #define DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING(name,type) _DEFINE_STRING_TABLE_LOOKUP_FROM_STRING(name,type,static) +#define DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(name,type,yes) _DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(name,type,yes,) + /* For string conversions where numbers are also acceptable */ #define DEFINE_STRING_TABLE_LOOKUP_WITH_FALLBACK(name,type,max) \ int name##_to_string_alloc(type i, char **str) { \ |