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util/env: add docs

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I always forget what env_parse_switch() does on error.
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Simon Ser 2022-12-06 11:42:03 +01:00
parent 1bd0ba3949
commit dc09585d14
1 changed files with 12 additions and 0 deletions
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12
include/util/env.h
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@ -4,8 +4,20 @@
#include <stdbool.h> #include <stdbool.h>
#include <unistd.h> #include <unistd.h>
/**
* Parse a bool from an environment variable.
*
* On success, the parsed value is returned. On error, false is returned.
*/
bool env_parse_bool(const char *option); bool env_parse_bool(const char *option);
/**
* Pick a choice from an environment variable.
*
* On success, the choice index is returned. On error, zero is returned.
*
* switches is a NULL-terminated array.
*/
ssize_t env_parse_switch(const char *option, const char **switches); ssize_t env_parse_switch(const char *option, const char **switches);
#endif #endif