11a1589223
Files which are installed as-is (any .service and other unit files, .conf files, .policy files, etc), are left as is. My assumption is that SPDX identifiers are not yet that well known, so it's better to retain the extended header to avoid any doubt. I also kept any copyright lines. We can probably remove them, but it'd nice to obtain explicit acks from all involved authors before doing that.
105 lines
5.5 KiB
C
105 lines
5.5 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#pragma once
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/***
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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***/
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#include <errno.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/types.h>
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#include "macro.h"
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#include "parse-util.h"
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#include "string-util.h"
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ssize_t string_table_lookup(const char * const *table, size_t len, const char *key);
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/* For basic lookup tables with strictly enumerated entries */
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#define _DEFINE_STRING_TABLE_LOOKUP_TO_STRING(name,type,scope) \
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scope const char *name##_to_string(type i) { \
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if (i < 0 || i >= (type) ELEMENTSOF(name##_table)) \
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return NULL; \
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return name##_table[i]; \
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}
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#define _DEFINE_STRING_TABLE_LOOKUP_FROM_STRING(name,type,scope) \
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scope type name##_from_string(const char *s) { \
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return (type) string_table_lookup(name##_table, ELEMENTSOF(name##_table), s); \
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}
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#define _DEFINE_STRING_TABLE_LOOKUP_FROM_STRING_WITH_BOOLEAN(name,type,yes,scope) \
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scope type name##_from_string(const char *s) { \
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int b; \
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if (!s) \
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return -1; \
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b = parse_boolean(s); \
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if (b == 0) \
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return (type) 0; \
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else if (b > 0) \
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return yes; \
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return (type) string_table_lookup(name##_table, ELEMENTSOF(name##_table), s); \
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}
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#define _DEFINE_STRING_TABLE_LOOKUP_TO_STRING_FALLBACK(name,type,max,scope) \
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scope int name##_to_string_alloc(type i, char **str) { \
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char *s; \
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if (i < 0 || i > max) \
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return -ERANGE; \
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if (i < (type) ELEMENTSOF(name##_table)) { \
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s = strdup(name##_table[i]); \
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if (!s) \
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return -ENOMEM; \
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} else { \
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if (asprintf(&s, "%i", i) < 0) \
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return -ENOMEM; \
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} \
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*str = s; \
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return 0; \
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}
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#define _DEFINE_STRING_TABLE_LOOKUP_FROM_STRING_FALLBACK(name,type,max,scope) \
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type name##_from_string(const char *s) { \
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type i; \
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unsigned u = 0; \
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if (!s) \
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return (type) -1; \
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for (i = 0; i < (type) ELEMENTSOF(name##_table); i++) \
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if (streq_ptr(name##_table[i], s)) \
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return i; \
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if (safe_atou(s, &u) >= 0 && u <= max) \
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return (type) u; \
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return (type) -1; \
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} \
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#define _DEFINE_STRING_TABLE_LOOKUP(name,type,scope) \
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_DEFINE_STRING_TABLE_LOOKUP_TO_STRING(name,type,scope) \
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_DEFINE_STRING_TABLE_LOOKUP_FROM_STRING(name,type,scope)
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#define _DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(name,type,yes,scope) \
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_DEFINE_STRING_TABLE_LOOKUP_TO_STRING(name,type,scope) \
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_DEFINE_STRING_TABLE_LOOKUP_FROM_STRING_WITH_BOOLEAN(name,type,yes,scope)
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#define DEFINE_STRING_TABLE_LOOKUP(name,type) _DEFINE_STRING_TABLE_LOOKUP(name,type,)
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#define DEFINE_PRIVATE_STRING_TABLE_LOOKUP(name,type) _DEFINE_STRING_TABLE_LOOKUP(name,type,static)
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#define DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(name,type) _DEFINE_STRING_TABLE_LOOKUP_TO_STRING(name,type,static)
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#define DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING(name,type) _DEFINE_STRING_TABLE_LOOKUP_FROM_STRING(name,type,static)
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#define DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(name,type,yes) _DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(name,type,yes,)
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/* For string conversions where numbers are also acceptable */
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#define DEFINE_STRING_TABLE_LOOKUP_WITH_FALLBACK(name,type,max) \
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_DEFINE_STRING_TABLE_LOOKUP_TO_STRING_FALLBACK(name,type,max,) \
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_DEFINE_STRING_TABLE_LOOKUP_FROM_STRING_FALLBACK(name,type,max,)
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#define DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING_FALLBACK(name,type,max) \
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_DEFINE_STRING_TABLE_LOOKUP_TO_STRING_FALLBACK(name,type,max,static)
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#define DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING_FALLBACK(name,type,max) \
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_DEFINE_STRING_TABLE_LOOKUP_FROM_STRING_FALLBACK(name,type,max,static)
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