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Implement IO_gethostname on Windows #140

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Merged
ChrisJefferson merged 1 commit into from
Sep 21, 2026
Merged

Implement IO_gethostname on Windows #140

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15 changes: 14 additions & 1 deletion src/io.c
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Original file line number Diff line number Diff line change
Expand Up @@ -40,6 +40,8 @@
#include <errno.h>
#ifdef _WIN32
#include <direct.h> // for _mkdir
#define WIN32_LEAN_AND_MEAN
#include <windows.h> // for GetComputerNameA
#endif

// Tracking child processes needs SIGCHLD and waitpid, which native Windows
Expand Down Expand Up @@ -1968,6 +1970,17 @@ static Obj FuncIO_gethostname(Obj self)
}
return MakeString(name);
}
#elif defined(_WIN32)
// gethostname is part of Winsock; the computer name needs no network setup
static Obj FuncIO_gethostname(Obj self)
{
char name[MAX_COMPUTERNAME_LENGTH + 1];
DWORD len = sizeof(name);
if (!GetComputerNameA(name, &len)) {
return Fail;
}
return MakeString(name);
}
#endif

static Obj FuncIO_getenv(Obj self, Obj name)
Expand Down Expand Up @@ -2265,7 +2278,7 @@ static StructGVarFunc GVarFuncs[] = {
GVAR_FUNC(IO_getsockname, 1, "fd"),
#endif

#ifdef HAVE_GETHOSTNAME
#if defined(HAVE_GETHOSTNAME) || defined(_WIN32)
GVAR_FUNC(IO_gethostname, 0, ""),
#endif

Expand Down