int main (int argc, char **argv)
{
lua_State *L = luaL_newstate(); /* create state */
luaL_openlibs(L); /* open standard libraries */
iuplua_openlibs(L);
createargtable(L, argv, argc); /* create table 'arg' */
iuplua_input(L);
lua_close(L);
return EXIT_SUCCESS;
}
/*
** Main body of stand-alone interpreter (to be called in protected mode).
** Reads the options and handles them all.
*/
static int pmain (lua_State *L) {
int argc = (int)lua_tointeger(L, 1);
char **argv = (char **)lua_touserdata(L, 2);
int script;
int args = collectargs(argv, &script);
luaL_checkversion(L); /* check that interpreter has correct version */
if (argv[0] && argv[0][0]) progname = argv[0];
#if 0
if (args == has_error) { /* bad arg? */
print_usage(argv[script]); /* 'script' has index of bad arg. */
return 0;
}
#endif
if (args & has_v) /* option '-v'? */
print_version();
if (args & has_E) { /* option '-E'? */
lua_pushboolean(L, 1); /* signal for libraries to ignore env. vars. */
lua_setfield(L, LUA_REGISTRYINDEX, "LUA_NOENV");
}
luaL_openlibs(L); /* open standard libraries */
createargtable(L, argv, argc, script); /* create table 'arg' */
if (!(args & has_E)) { /* no option '-E'? */
if (handle_luainit(L) != LUA_OK) /* run LUA_INIT */
return 0; /* error running LUA_INIT */
}
if (!runargs(L, argv, script)) /* execute arguments -e and -l */
return 0; /* something failed */
if (script < argc && /* execute main script (if there is one) */
handle_script(L, argv + script) != LUA_OK)
return 0;
#if 0
if (args & has_i) /* -i option? */
doREPL(L); /* do read-eval-print loop */
else if (script == argc && !(args & (has_e | has_v))) { /* no arguments? */
if (lua_stdin_is_tty()) { /* running in interactive mode? */
print_version();
doREPL(L); /* do read-eval-print loop */
}
else dofile(L, NULL); /* executes stdin as a file */
}
#endif
lua_pushboolean(L, 1); /* signal no errors */
return 1;
}
/*
** 独立主函数的解释器(在保护模式下被调用)
** 读取选项参数并且处理他们
*/
static int pmain (lua_State *L) {
int argc = (int)lua_tointeger(L, 1);
char **argv = (char **)lua_touserdata(L, 2);
int script;
int args = collectargs(argv, &script);
luaL_checkversion(L); /* 检查解释器的版本*/
if (argv[0] && argv[0][0]) progname = argv[0];
if (args == has_error) { /* 坏变量? */
print_usage(argv[script]); /* '脚本'存在坏的变量 */
return 0;
}
if (args & has_v) /* 带有选项参数 '-v'? */
print_version();
if (args & has_E) { /* 带有选项参数 '-E'? */
lua_pushboolean(L, 1); /* signal for libraries to ignore env. vars. */
lua_setfield(L, LUA_REGISTRYINDEX, "LUA_NOENV");
}
luaL_openlibs(L); /* 打开标准库 */
createargtable(L, argv, argc, script); /* 创建表 'arg' */
if (!(args & has_E)) { /* 没有选项'-E'? */
if (handle_luainit(L) != LUA_OK) /* 执行LUA_INIT */
return 0; /* error running LUA_INIT */
}
if (!runargs(L, argv, script)) /* 执行选项参数 -e and -l */
return 0; /* something failed */
if (script < argc && /**************************************** 执行主脚本 (如果有一个),这里是重点 *************************************/
handle_script(L, argv + script) != LUA_OK)
return 0;
if (args & has_i) /* -i 选项参数? */
doREPL(L); /* do read-eval-print loop 交互模式,即读取->运算->输出循环 */
else if (script == argc && !(args & (has_e | has_v))) { /* 没有参数? */
if (lua_stdin_is_tty()) { /* 交互模式运行? */
print_version();
doREPL(L); /* do read-eval-print loop 交互模式,即读取->运算->输出循环*/
}
else dofile(L, NULL); /* 执行stdin as a file */
}
lua_pushboolean(L, 1); /* signal no errors */
return 1;
}
static int pmain(lua_State *L)
{
struct Smain *s = &smain;
char **argv = s->argv;
int argn;
int flags = 0;
globalL = L;
if (argv[0] && argv[0][0]) progname = argv[0];
LUAJIT_VERSION_SYM(); /* Linker-enforced version check. */
argn = collectargs(argv, &flags);
if (argn < 0) { /* Invalid args? */
print_usage();
s->status = 1;
return 0;
}
if ((flags & FLAGS_NOENV)) {
lua_pushboolean(L, 1);
lua_setfield(L, LUA_REGISTRYINDEX, "LUA_NOENV");
}
/* Set MAD env _before_ libraries are open. */
mad_setenv(L, flags & FLAGS_NOENV);
/* Stop collector during library initialization. */
lua_gc(L, LUA_GCSTOP, 0);
luaL_openlibs(L);
mad_openlibs(L);
lua_gc(L, LUA_GCRESTART, -1);
createargtable(L, argv, s->argc, argn);
if (!(flags & FLAGS_NOENV)) {
s->status = handle_luainit(L);
if (s->status != LUA_OK) return 0;
}
/* MAD section. */
mad_setsig();
mad_regfunc();
if ((flags & FLAGS_MADENV))
dolibrary(L, "madl_main");
if (!(flags & FLAGS_NOENV)) {
s->status = handle_madinit(L);
if (s->status != LUA_OK) return 0;
}
if ((flags & FLAGS_VERSION)) print_version();
s->status = runargs(L, argv, argn);
if (s->status != LUA_OK) return 0;
if (s->argc > argn) {
s->status = handle_script(L, argv + argn);
if (s->status != LUA_OK) return 0;
}
if ((flags & FLAGS_INTERACTIVE)) {
(void)print_jit_status;
dotty(L);
} else if (s->argc == argn && !(flags & FLAGS_EXEC)) {
if (lua_stdin_is_tty()) {
(void)print_version;
(void)print_jit_status;
dotty(L);
} else {
dofile(L, NULL); /* Executes stdin as a file. */
}
}
return 0;
}
