feat(*): add environment variable and random functions

1 files changed, 27 insertions, 0 deletions

diff --git a/src/compat.h b/src/compat.h
index f523fd9..5aca6df 100644
--- a/src/compat.h
+++ b/src/compat.h
@@ -8,4 +8,31 @@
 void luaL_setfuncs(lua_State *L, const luaL_Reg *l, int nup);
 #endif
 
+// Windows doesn't have ssize_t, so we define it here
+#ifdef _WIN32
+#if SIZE_MAX == UINT_MAX
+typedef int ssize_t;        /* common 32 bit case */
+#define SSIZE_MIN  INT_MIN
+#define SSIZE_MAX  INT_MAX
+#elif SIZE_MAX == ULONG_MAX
+typedef long ssize_t;       /* linux 64 bits */
+#define SSIZE_MIN  LONG_MIN
+#define SSIZE_MAX  LONG_MAX
+#elif SIZE_MAX == ULLONG_MAX
+typedef long long ssize_t;  /* windows 64 bits */
+#define SSIZE_MIN  LLONG_MIN
+#define SSIZE_MAX  LLONG_MAX
+#elif SIZE_MAX == USHRT_MAX
+typedef short ssize_t;      /* is this even possible? */
+#define SSIZE_MIN  SHRT_MIN
+#define SSIZE_MAX  SHRT_MAX
+#elif SIZE_MAX == UINTMAX_MAX
+typedef intmax_t ssize_t;  /* last resort, chux suggestion */
+#define SSIZE_MIN  INTMAX_MIN
+#define SSIZE_MAX  INTMAX_MAX
+#else
+#error platform has exotic SIZE_MAX
+#endif
+#endif
+
 #endif