diff --git a/Lib/lua/argcargv.i b/Lib/lua/argcargv.i new file mode 100644 index 000000000..670ce4a80 --- /dev/null +++ b/Lib/lua/argcargv.i @@ -0,0 +1,58 @@ +/* ------------------------------------------------------------ + * --- Argc & Argv --- + * ------------------------------------------------------------ + * + * Use it as follow: + * + * %apply (int ARGC, char **ARGV) { (size_t argc, const char **argv) } + * extern int mainApp(size_t argc, const char **argv); + * + * then in the lua: + * + * args = { "arg0", "arg1" } + * mainApp(args); + * + * ------------------------------------------------------------ */ + +%{ +SWIGINTERN int SWIG_argv_size(lua_State* L, int index) { + int n=0; + while(1){ + lua_rawgeti(L,index,n+1); + if (lua_isnil(L,-1)) + break; + ++n; + lua_pop(L,1); + } + lua_pop(L,1); + return n; +} +%} + +%typemap(in) (int ARGC, char **ARGV) { + if (lua_istable(L,$input)) { + int i, size = SWIG_argv_size(L,$input); + $1 = ($1_ltype) size; + $2 = (char **) malloc((size+1)*sizeof(char *)); + for (i = 0; i < size; i++) { + lua_rawgeti(L,$input,i+1); + if (lua_isnil(L,-1)) + break; + $2[i] = (char *)lua_tostring(L, -1); + lua_pop(L,1); + } + $2[i]=NULL; + } else { + $1 = 0; $2 = 0; + lua_pushstring(L,"Expecting argv array"); + lua_error(L); + } +} + +%typemap(typecheck, precedence=SWIG_TYPECHECK_STRING_ARRAY) (int ARGC, char **ARGV) { + $1 = lua_istable(L,$input); +} + +%typemap(freearg) (int ARGC, char **ARGV) { + free((char *) $2); +}