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util: clean-ups to enum parsers

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Never log when we fail due to OOM when translating enums, let the caller
do that. Translating basic types like enums should be something where
the caller logs, not the translatior functions.

Return -1 when NULL is passed to all enum parser functions.

The non-fallback versions of the enum translator calls already handle
NULL as failure, instead of hitting an assert, and we should do this
here, too.
This commit is contained in:
Lennart Poettering 2015-09-19 00:50:34 +02:00
parent 08edf879ed
commit 8c721f2bcb
2 changed files with 11 additions and 13 deletions
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2
src/basic/util.c
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@ -6561,7 +6561,7 @@ ssize_t string_table_lookup(const char * const *table, size_t len, const char *k
for (i = 0; i < len; ++i)
if (streq_ptr(table[i], key))
return (ssize_t)i;
return (ssize_t) i;
return -1;
}

22
src/basic/util.h
View file

@ -290,9 +290,9 @@ bool chars_intersect(const char *a, const char *b) _pure_;
ssize_t string_table_lookup(const char * const *table, size_t len, const char *key);
#define _DEFINE_STRING_TABLE_LOOKUP_FROM_STRING(name,type,scope) \
scope inline type name##_from_string(const char *s) { \
return (type)string_table_lookup(name##_table, ELEMENTSOF(name##_table), s); \
#define _DEFINE_STRING_TABLE_LOOKUP_FROM_STRING(name,type,scope) \
scope type name##_from_string(const char *s) { \
return (type) string_table_lookup(name##_table, ELEMENTSOF(name##_table), s); \
}
#define _DEFINE_STRING_TABLE_LOOKUP(name,type,scope) \
@ -309,17 +309,15 @@ ssize_t string_table_lookup(const char * const *table, size_t len, const char *k
#define DEFINE_STRING_TABLE_LOOKUP_WITH_FALLBACK(name,type,max) \
int name##_to_string_alloc(type i, char **str) { \
char *s; \
int r; \
if (i < 0 || i > max) \
return -ERANGE; \
if (i < (type) ELEMENTSOF(name##_table)) { \
s = strdup(name##_table[i]); \
if (!s) \
return log_oom(); \
return -ENOMEM; \
} else { \
r = asprintf(&s, "%i", i); \
if (r < 0) \
return log_oom(); \
if (asprintf(&s, "%i", i) < 0) \
return -ENOMEM; \
} \
*str = s; \
return 0; \
@ -327,10 +325,10 @@ ssize_t string_table_lookup(const char * const *table, size_t len, const char *k
type name##_from_string(const char *s) { \
type i; \
unsigned u = 0; \
assert(s); \
for (i = 0; i < (type)ELEMENTSOF(name##_table); i++) \
if (name##_table[i] && \
streq(name##_table[i], s)) \
if (!s) \
return (type) -1; \
for (i = 0; i < (type) ELEMENTSOF(name##_table); i++) \
if (streq_ptr(name##_table[i], s)) \
return i; \
if (safe_atou(s, &u) >= 0 && u <= max) \
return (type) u; \