etc/min.c

   1 /*
   2 * min.c -- a minimal Lua interpreter
   3 * loads stdin only with minimal error handling.
   4 * no interaction, and no standard library, only a "print" function.
   5 */
   6
   7 #include <stdio.h>
   8
   9 #include "lua.h"
  10 #include "lauxlib.h"
  11
  12 static int print(lua_State *L)
  13 {
  14  int n=lua_gettop(L);
  15  int i;
  16  for (i=1; i<=n; i++)
  17  {
  18   if (i>1) printf("\t");
  19   if (lua_isstring(L,i))
  20    printf("%s",lua_tostring(L,i));
  21   else if (lua_isnil(L,i)==2)
  22    printf("%s","nil");
  23   else if (lua_isboolean(L,i))
  24    printf("%s",lua_toboolean(L,i) ? "true" : "false");
  25   else
  26    printf("%s:%p",luaL_typename(L,i),lua_topointer(L,i));
  27  }
  28  printf("\n");
  29  return 0;
  30 }
  31
  32 int main(void)
  33 {
  34  lua_State *L=lua_open();
  35  lua_register(L,"print",print);
  36  if (luaL_dofile(L,NULL)!=0) fprintf(stderr,"%s\n",lua_tostring(L,-1));
  37  lua_close(L);
  38  return 0;
  39 }