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// env.c -- environment variable access
#include <uv.h>
#include "os/os.h"
#include "misc2.h"
#ifdef HAVE__NSGETENVIRON
#include <crt_externs.h>
#endif
#ifdef HAVE_SYS_UTSNAME_H
#include <sys/utsname.h>
#endif
const char *os_getenv(const char *name)
{
return getenv(name);
}
int os_setenv(const char *name, const char *value, int overwrite)
{
return setenv(name, value, overwrite);
}
char *os_getenvname_at_index(size_t index)
{
# if defined(AMIGA) || defined(__MRC__) || defined(__SC__)
// No environ[] on the Amiga and on the Mac (using MPW).
return NULL;
# else
# if defined(HAVE__NSGETENVIRON)
char **environ = *_NSGetEnviron();
# elif !defined(__WIN32__)
// Borland C++ 5.2 has this in a header file.
extern char **environ;
# endif
// check if index is inside the environ array
for (size_t i = 0; i < index; i++) {
if (environ[i] == NULL) {
return NULL;
}
}
char *str = environ[index];
if (str == NULL) {
return NULL;
}
int namesize = 0;
while (str[namesize] != '=' && str[namesize] != NUL) {
namesize++;
}
char *name = (char *)vim_strnsave((char_u *)str, namesize);
return name;
# endif
}
long os_get_pid()
{
#ifdef _WIN32
return (long)GetCurrentProcessId();
#else
return (long)getpid();
#endif
}
void os_get_hostname(char *hostname, size_t len)
{
#ifdef HAVE_SYS_UTSNAME_H
struct utsname vutsname;
if (uname(&vutsname) < 0) {
*hostname = '\0';
} else {
strncpy(hostname, vutsname.nodename, len - 1);
hostname[len - 1] = '\0';
}
#else
// TODO: Implement this for windows. See the implementation used in vim:
// https://code.google.com/p/vim/source/browse/src/os_win32.c?r=6b69d8dde19e32909f4ee3a6337e6a2ecfbb6f72#2899
*hostname = '\0';
#endif
}
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