Handle reading input in Rust

Cargo.lock

@@ -2,6 +2,26 @@
 # It is not intended for manual editing.
 version = 3
 
+[[package]]
+name = "atty"
+version = "0.2.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d9b39be18770d11421cdb1b9947a45dd3f37e93092cbf377614828a319d5fee8"
+dependencies = [
+ "hermit-abi",
+ "libc",
+ "winapi",
+]
+
+[[package]]
+name = "hermit-abi"
+version = "0.1.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "62b467343b94ba476dcb2500d242dadbb39557df889310ac77c5d99100aaac33"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "lexopt"
 version = "0.3.0"
@@ -18,6 +38,29 @@ checksum = "b4668fb0ea861c1df094127ac5f1da3409a82116a4ba74fca2e58ef927159bb3"
 name = "nmsrust"
 version = "0.1.0"
 dependencies = [
+ "atty",
  "lexopt",
  "libc",
 ]
+
+[[package]]
+name = "winapi"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"

Cargo.toml

@@ -12,4 +12,5 @@ crate-type = ["staticlib"]
 [dependencies]
 lexopt = "0.3.0"
 libc = "0.2.147"
+atty = "0.2.14"
 

src/lib.rs

@@ -1,14 +1,17 @@
 mod args;
 mod color;
 
-use color::Color;
+use libc::{c_char, c_int, c_uchar, c_void};
-use libc::{c_int, c_void};
+use std::ffi::CString;
 use std::process;
 
+use color::Color;
+
 const VERSION: &str = "2.0.0";
 
 extern "C" {
     fn nmseffect_set_clearscr(_: c_int) -> c_void;
+    fn nmseffect_exec(input: *const c_char, len: c_int) -> c_char;
     static mut foregroundColor: c_int;
     static mut maskBlank: c_int;
     static mut autoDecrypt: c_int;
@@ -60,4 +63,32 @@ pub extern "C" fn rust_main() {
             autoDecrypt = 0;
         }
     }
+
+    let output = get_input("Enter input: ");
+    if output.len() == 0 {
+        eprintln!("Input is empty"); //TODO use error_log()/error_print() abstraction
+        process::exit(1);
+    }
+    let output_cstring = CString::new(output).unwrap();
+    let ptr = output_cstring.as_ptr();
+    let len = output_cstring.as_bytes().len();
+    let _r = unsafe { nmseffect_exec(ptr, len as i32) };
+}
+
+fn get_input(prompt: &str) -> String {
+    use std::io::{Read, Write};
+
+    let mut stdin = std::io::stdin();
+    let mut stdout = std::io::stdout();
+    let mut buf = String::new();
+
+    if atty::is(atty::Stream::Stdin) {
+        print!("{prompt}");
+        stdout.flush().unwrap();
+        stdin.read_line(&mut buf).unwrap();
+    } else {
+        stdin.read_to_string(&mut buf).unwrap();
+    }
+
+    buf
 }

src/nms.c

@@ -20,6 +20,7 @@ extern void rust_main();
 int main(int argc, char *argv[])
 {
 	rust_main();
+	/*
 	unsigned char *input = NULL;
 
 	int r = input_get(&input, "Enter input: ");
@@ -39,6 +40,7 @@ int main(int argc, char *argv[])
 	r = nmseffect_exec(input, r);
 
 	free(input);
+	*/
 
 	return EXIT_SUCCESS;
 }