54 lines
1.6 KiB
Rust
54 lines
1.6 KiB
Rust
use std::env;
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use std::ffi::{CStr, CString};
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use std::ptr;
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use luajit_sys as sys;
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unsafe fn run_script(script_name: String, script_src: String) {
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let lua = sys::luaL_newstate();
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assert_ne!(lua, ptr::null_mut());
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sys::luaL_openlibs(lua);
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let script_data = script_src.as_bytes();
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let script_name = CString::new(script_name).unwrap();
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let mut error = sys::luaL_loadbuffer(
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lua,
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script_data.as_ptr() as _,
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script_data.len() as _,
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script_name.as_ptr() as _,
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);
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if error != 0 {
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eprintln!("luaL_loadbuffer failed");
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} else {
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error = sys::lua_pcall(lua, 0, 1, 0);
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if error != 0 {
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eprintln!("lua_pcall failed");
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}
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}
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let idx = sys::lua_gettop(lua);
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if sys::lua_isnoneornil(lua, idx) != 1 {
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let s = sys::lua_tostring(lua, idx);
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assert_ne!(s, ptr::null(), "lua_tostring returned null");
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let result = CStr::from_ptr(s).to_string_lossy().to_string();
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println!("script result: {}", result);
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}
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sys::lua_close(lua);
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}
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fn main() {
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if let Some(script_name) = env::args().skip(1).next() {
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let script_src = std::fs::read_to_string(&script_name)
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.unwrap_or_else(|e| panic!("failed to read file: '{}' {:?}", &script_name, e));
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unsafe {
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run_script(script_name, script_src);
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}
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} else {
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println!(
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"{} FILE",
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env::current_exe()
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.unwrap()
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.file_name()
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.unwrap()
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.to_string_lossy()
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);
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}
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}
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