117 lines
2.8 KiB
Rust
117 lines
2.8 KiB
Rust
mod args;
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mod charset;
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mod color;
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mod sneakers;
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use libc::{c_char, c_int, c_void};
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use std::ffi::CString;
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use std::process;
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use color::Color;
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const VERSION: &str = "2.0.0";
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extern "C" {
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fn nmstermio_set_clearscr(_: c_int);
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fn nmseffect_exec(
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input: *const c_char,
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len: c_int,
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autodecrypt_c: c_int,
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maskblank_c: c_int,
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clear_scr: c_int,
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) -> c_char;
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static mut foregroundColor: c_int;
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}
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///Sleep for the number of milliseconds indicated by argument
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#[no_mangle]
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pub extern "C" fn nmseffect_sleep(t: c_int) {
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use std::time::Duration;
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let dur = Duration::from_millis(t as u64);
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std::thread::sleep(dur);
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}
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/// Return a random character from charTable[].
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#[no_mangle]
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pub extern "C" fn nmscharset_get_random() -> *const c_char {
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let table = charset::CHAR_TABLE;
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let idx: u16 = rand::random::<u16>();
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let bytes = table[(idx as usize) % table.len()];
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bytes.as_ptr() as *const c_char
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}
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#[no_mangle]
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pub extern "C" fn rust_main() {
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println!("Hello from rust");
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let args = match args::parse_arguments() {
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Ok(args) => args,
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Err(e) => {
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println!("{e}");
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process::exit(1);
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}
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};
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println!("{:?}", args);
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if args.version {
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println!("nms version {VERSION}");
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process::exit(0);
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}
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if let Some(color) = args.foreground {
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let color = Color::try_from(color).unwrap_or_default();
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let n = color as c_int;
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unsafe {
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foregroundColor = n;
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}
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}
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if args.clear_screen {
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unsafe {
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nmstermio_set_clearscr(1);
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}
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}
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let input = get_input("Enter input: ");
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if input.len() == 0 {
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eprintln!("Input is empty"); //TODO use error_log()/error_print() abstraction
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process::exit(1);
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}
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exec_effect(input, args.autodecrypt, args.mask_blanks, args.clear_screen);
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}
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pub(crate) fn exec_effect(input: String, autodecrypt: bool, maskblank: bool, clear_screen: bool) {
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let maskblank_c = if maskblank { 1 } else { 0 };
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let autodecrypt_c = if autodecrypt { 1 } else { 0};
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let output_cstring = CString::new(input).unwrap();
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let ptr = output_cstring.as_ptr();
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let len = output_cstring.as_bytes().len();
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let clear = if clear_screen { 1 } else { 0 };
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let _r = unsafe { nmseffect_exec(ptr, len as i32, autodecrypt_c, maskblank_c, clear) };
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}
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fn get_input(prompt: &str) -> String {
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use std::io::{Read, Write};
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let mut stdin = std::io::stdin();
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let mut stdout = std::io::stdout();
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let mut buf = String::new();
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if atty::is(atty::Stream::Stdin) {
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print!("{prompt}");
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stdout.flush().unwrap();
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stdin.read_line(&mut buf).unwrap();
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} else {
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stdin.read_to_string(&mut buf).unwrap();
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}
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buf
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}
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