diff options
Diffstat (limited to 'etc/min.c')
-rw-r--r-- | etc/min.c | 47 |
1 files changed, 19 insertions, 28 deletions
@@ -1,46 +1,37 @@ /* * min.c -- a minimal Lua interpreter -* loads stdin only with minimal error handling. -* no interaction, and no standard library, only a "print" function. +* only dynamic loading is enabled -- all libraries must be dynamically loaded +* no interaction, only batch execution */ #include <stdio.h> #include "lua.h" +#include "lualib.h" +#include "lauxlib.h" -static int print(lua_State *L) +static int run(lua_State *L) { - int n=lua_gettop(L); - int i; - for (i=1; i<=n; i++) + char **argv=lua_touserdata(L,1); + lua_register(L,"error",lua_error); + luaopen_loadlib(L); + while (*++argv) { - if (i>1) printf("\t"); - if (lua_isstring(L,i)) - printf("%s",lua_tostring(L,i)); - else if (lua_isnil(L,i)) - printf("%s","nil"); - else if (lua_isboolean(L,i)) - printf("%s",lua_toboolean(L,i) ? "true" : "false"); - else - printf("%s:%p",lua_typename(L,lua_type(L,i)),lua_topointer(L,i)); + if (luaL_loadfile(L,*argv)) lua_error(L); else lua_call(L,0,0); } - printf("\n"); return 0; } -static const char *getF(lua_State *L, void *ud, size_t *size) -{ - FILE *f=(FILE *)ud; - static char buff[512]; - if (feof(f)) return NULL; - *size=fread(buff,1,sizeof(buff),f); - return (*size>0) ? buff : NULL; -} +#define report(s) fprintf(stderr,"%s\n",s) -int main(void) +int main(int argc, char *argv[]) { lua_State *L=lua_open(); - lua_register(L,"print",print); - if (lua_load(L,getF,stdin,"=stdin") || lua_pcall(L,0,0,0)) - fprintf(stderr,"%s\n",lua_tostring(L,-1)); + if (L==NULL) + { + report("not enough memory for state"); + return 1; + } + if (lua_cpcall(L,run,argv)) report(lua_tostring(L,-1)); + lua_close(L); return 0; } |