-extern crate stud_rust_base;
-use stud_rust_base::io::*;
-use std::env;
+use stud_rust_base::{io::*, cli::CliErr};
+use std::{env, error::Error};
-fn main() {
+fn main() -> Result<(), Box<dyn Error>> {
let mut args = env::args();
args.next();
match &args.collect::<Vec<String>>()[..] {
[data_type, input] => {
match data_type.as_ref() {
- "i8" => print_values(Vec::<i8>::load_from(input).expect("Failed to read from input")),
- "u8" => print_values(Vec::<u8>::load_from(input).expect("Failed to read from input")),
- "i16" => print_values(Vec::<i16>::load_from(input).expect("Failed to read from input")),
- "u16" => print_values(Vec::<u16>::load_from(input).expect("Failed to read from input")),
- "i32" => print_values(Vec::<i32>::load_from(input).expect("Failed to read from input")),
- "u32" => print_values(Vec::<u32>::load_from(input).expect("Failed to read from input")),
- "i64" => print_values(Vec::<i64>::load_from(input).expect("Failed to read from input")),
- "u64" => print_values(Vec::<u64>::load_from(input).expect("Failed to read from input")),
- "f32" => print_values(Vec::<f32>::load_from(input).expect("Failed to read from input")),
- "f64" => print_values(Vec::<f64>::load_from(input).expect("Failed to read from input")),
- "int8" => print_values(Vec::<i8>::load_from(input).expect("Failed to read from input")),
- "uint8" => print_values(Vec::<u8>::load_from(input).expect("Failed to read from input")),
- "int16" => print_values(Vec::<i16>::load_from(input).expect("Failed to read from input")),
- "uint16" => print_values(Vec::<u16>::load_from(input).expect("Failed to read from input")),
- "int32" => print_values(Vec::<i32>::load_from(input).expect("Failed to read from input")),
- "uint32" => print_values(Vec::<u32>::load_from(input).expect("Failed to read from input")),
- "int64" => print_values(Vec::<i64>::load_from(input).expect("Failed to read from input")),
- "uint64" => print_values(Vec::<u64>::load_from(input).expect("Failed to read from input")),
- "float32" => print_values(Vec::<f32>::load_from(input).expect("Failed to read from input")),
- "float64" => print_values(Vec::<f64>::load_from(input).expect("Failed to read from input")),
+ "i8" => { print_values(Vec::<i8>::load_from(input)?); Ok(()) },
+ "u8" => { print_values(Vec::<u8>::load_from(input)?); Ok(()) },
+ "i16" => { print_values(Vec::<i16>::load_from(input)?); Ok(()) },
+ "u16" => { print_values(Vec::<u16>::load_from(input)?); Ok(()) },
+ "i32" => { print_values(Vec::<i32>::load_from(input)?); Ok(()) },
+ "u32" => { print_values(Vec::<u32>::load_from(input)?); Ok(()) },
+ "i64" => { print_values(Vec::<i64>::load_from(input)?); Ok(()) },
+ "u64" => { print_values(Vec::<u64>::load_from(input)?); Ok(()) },
+ "f32" => { print_values(Vec::<f32>::load_from(input)?); Ok(()) },
+ "f64" => { print_values(Vec::<f64>::load_from(input)?); Ok(()) },
+ "int8" => { print_values(Vec::<i8>::load_from(input)?); Ok(()) },
+ "uint8" => { print_values(Vec::<u8>::load_from(input)?); Ok(()) },
+ "int16" => { print_values(Vec::<i16>::load_from(input)?); Ok(()) },
+ "uint16" => { print_values(Vec::<u16>::load_from(input)?); Ok(()) },
+ "int32" => { print_values(Vec::<i32>::load_from(input)?); Ok(()) },
+ "uint32" => { print_values(Vec::<u32>::load_from(input)?); Ok(()) },
+ "int64" => { print_values(Vec::<i64>::load_from(input)?); Ok(()) },
+ "uint64" => { print_values(Vec::<u64>::load_from(input)?); Ok(()) },
+ "float32" => { print_values(Vec::<f32>::load_from(input)?); Ok(()) },
+ "float64" => { print_values(Vec::<f64>::load_from(input)?); Ok(()) },
_ => {
print_usage();
- panic!("Unknown data_type {}", data_type);
+ Err(Box::new(CliErr("Invalid data type")))
}
- };
+ }
},
_ => {
print_usage();
- panic!("Invalid input")
+ Err(Box::new(CliErr("Invalid arguments")))
},
}
}