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#include "env.h"
#include "../malloc/malloc.h"
const char **envp;
const char **__getenvpair(const char *key);
u8 __match_env_key(const char *p, const char *key);
const char *getenv(const char *key)
{
const char **p = __getenvpair(key);
const char *value;
if (p == 0)
return "";
value = *p;
while (*value != '=') ++value;
return ++value;
}
void setenv(const char *key, const char *value)
{
const char **p = __getenvpair(key);
*p = value;
}
const char **__getenvpair(const char *key)
{
const char **p = envp;
while (*p) {
if (__match_env_key(*p, key)) {
return p;
}
++p;
}
return 0;
}
const char **getenvp()
{
return envp;
}
u8 __match_env_key(const char *p, const char *key)
{
while (*key && *p) {
if (*key != *p)
return 0;
++p;
++key;
}
if (*p != '=')
return 0;
return 1;
}
void init_env(int argc, const char **argv, const char **envp__)
{
envp = envp__;
}
#ifdef ENV_UNIT_TEST
#include "../io/io.h"
int main(int argc, const char **argv)
{
wstdf("HOME: %s\n", getenv("HOSTNAME"));
}
#endif
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