extern crate stud_rust_base;
-use stud_rust_base::io::*;
-use std::env;
+use stud_rust_base::{io::*, cli::CliErr};
+use std::{env, fmt::Display, error::Error};
-fn main() {
+fn main() -> Result<(), Box<dyn Error>> {
let mut args = env::args();
args.next();
match &args.collect::<Vec<String>>()[..] {
[data_type, input1, input2] => {
match data_type.as_ref() {
- "i8" => compare_values(&Vec::<i8>::load_from(input1).expect("Failed to read from input1"), &Vec::<i8>::load_from(input2).expect("Failed to read from input2")),
- "u8" => compare_values(&Vec::<u8>::load_from(input1).expect("Failed to read from input1"), &Vec::<u8>::load_from(input2).expect("Failed to read from input2")),
- "i16" => compare_values(&Vec::<i16>::load_from(input1).expect("Failed to read from input1"), &Vec::<i16>::load_from(input2).expect("Failed to read from input2")),
- "u16" => compare_values(&Vec::<u16>::load_from(input1).expect("Failed to read from input1"), &Vec::<u16>::load_from(input2).expect("Failed to read from input2")),
- "i32" => compare_values(&Vec::<i32>::load_from(input1).expect("Failed to read from input1"), &Vec::<i32>::load_from(input2).expect("Failed to read from input2")),
- "u32" => compare_values(&Vec::<u32>::load_from(input1).expect("Failed to read from input1"), &Vec::<u32>::load_from(input2).expect("Failed to read from input2")),
- "i64" => compare_values(&Vec::<i64>::load_from(input1).expect("Failed to read from input1"), &Vec::<i64>::load_from(input2).expect("Failed to read from input2")),
- "u64" => compare_values(&Vec::<u64>::load_from(input1).expect("Failed to read from input1"), &Vec::<u64>::load_from(input2).expect("Failed to read from input2")),
- "f32" => compare_values(&Vec::<f32>::load_from(input1).expect("Failed to read from input1"), &Vec::<f32>::load_from(input2).expect("Failed to read from input2")),
- "f64" => compare_values(&Vec::<f64>::load_from(input1).expect("Failed to read from input1"), &Vec::<f64>::load_from(input2).expect("Failed to read from input2")),
- "int8" => compare_values(&Vec::<i8>::load_from(input1).expect("Failed to read from input1"), &Vec::<i8>::load_from(input2).expect("Failed to read from input2")),
- "uint8" => compare_values(&Vec::<u8>::load_from(input1).expect("Failed to read from input1"), &Vec::<u8>::load_from(input2).expect("Failed to read from input2")),
- "int16" => compare_values(&Vec::<i16>::load_from(input1).expect("Failed to read from input1"), &Vec::<i16>::load_from(input2).expect("Failed to read from input2")),
- "uint16" => compare_values(&Vec::<u16>::load_from(input1).expect("Failed to read from input1"), &Vec::<u16>::load_from(input2).expect("Failed to read from input2")),
- "int32" => compare_values(&Vec::<i32>::load_from(input1).expect("Failed to read from input1"), &Vec::<i32>::load_from(input2).expect("Failed to read from input2")),
- "uint32" => compare_values(&Vec::<u32>::load_from(input1).expect("Failed to read from input1"), &Vec::<u32>::load_from(input2).expect("Failed to read from input2")),
- "int64" => compare_values(&Vec::<i64>::load_from(input1).expect("Failed to read from input1"), &Vec::<i64>::load_from(input2).expect("Failed to read from input2")),
- "uint64" => compare_values(&Vec::<u64>::load_from(input1).expect("Failed to read from input1"), &Vec::<u64>::load_from(input2).expect("Failed to read from input2")),
- "float32" => compare_values(&Vec::<f32>::load_from(input1).expect("Failed to read from input1"), &Vec::<f32>::load_from(input2).expect("Failed to read from input2")),
- "float64" => compare_values(&Vec::<f64>::load_from(input1).expect("Failed to read from input1"), &Vec::<f64>::load_from(input2).expect("Failed to read from input2")),
+ "i8" => { compare_values(&Vec::<i8>::load_from(input1)?, &Vec::<i8>::load_from(input2)?); Ok(()) },
+ "u8" => { compare_values(&Vec::<u8>::load_from(input1)?, &Vec::<u8>::load_from(input2)?); Ok(()) },
+ "i16" => { compare_values(&Vec::<i16>::load_from(input1)?, &Vec::<i16>::load_from(input2)?); Ok(()) },
+ "u16" => { compare_values(&Vec::<u16>::load_from(input1)?, &Vec::<u16>::load_from(input2)?); Ok(()) },
+ "i32" => { compare_values(&Vec::<i32>::load_from(input1)?, &Vec::<i32>::load_from(input2)?); Ok(()) },
+ "u32" => { compare_values(&Vec::<u32>::load_from(input1)?, &Vec::<u32>::load_from(input2)?); Ok(()) },
+ "i64" => { compare_values(&Vec::<i64>::load_from(input1)?, &Vec::<i64>::load_from(input2)?); Ok(()) },
+ "u64" => { compare_values(&Vec::<u64>::load_from(input1)?, &Vec::<u64>::load_from(input2)?); Ok(()) },
+ "f32" => { compare_values(&Vec::<f32>::load_from(input1)?, &Vec::<f32>::load_from(input2)?); Ok(()) },
+ "f64" => { compare_values(&Vec::<f64>::load_from(input1)?, &Vec::<f64>::load_from(input2)?); Ok(()) },
+ "int8" => { compare_values(&Vec::<i8>::load_from(input1)?, &Vec::<i8>::load_from(input2)?); Ok(()) },
+ "uint8" => { compare_values(&Vec::<u8>::load_from(input1)?, &Vec::<u8>::load_from(input2)?); Ok(()) },
+ "int16" => { compare_values(&Vec::<i16>::load_from(input1)?, &Vec::<i16>::load_from(input2)?); Ok(()) },
+ "uint16" => { compare_values(&Vec::<u16>::load_from(input1)?, &Vec::<u16>::load_from(input2)?); Ok(()) },
+ "int32" => { compare_values(&Vec::<i32>::load_from(input1)?, &Vec::<i32>::load_from(input2)?); Ok(()) },
+ "uint32" => { compare_values(&Vec::<u32>::load_from(input1)?, &Vec::<u32>::load_from(input2)?); Ok(()) },
+ "int64" => { compare_values(&Vec::<i64>::load_from(input1)?, &Vec::<i64>::load_from(input2)?); Ok(()) },
+ "uint64" => { compare_values(&Vec::<u64>::load_from(input1)?, &Vec::<u64>::load_from(input2)?); Ok(()) },
+ "float32" => { compare_values(&Vec::<f32>::load_from(input1)?, &Vec::<f32>::load_from(input2)?); Ok(()) },
+ "float64" => { compare_values(&Vec::<f64>::load_from(input1)?, &Vec::<f64>::load_from(input2)?); 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")))
},
}
}
");
}
-use std::fmt::Display;
-
fn compare_values<T>(values1: &[T], values2: &[T]) where
T: Display,
T: PartialOrd
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")))
},
}
}
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, output] => {
match data_type.as_ref() {
- "i8" => parse_input::<i8>().write_to(output).expect("Failed to write to output"),
- "u8" => parse_input::<u8>().write_to(output).expect("Failed to write to output"),
- "i16" => parse_input::<i16>().write_to(output).expect("Failed to write to output"),
- "u16" => parse_input::<u16>().write_to(output).expect("Failed to write to output"),
- "i32" => parse_input::<i32>().write_to(output).expect("Failed to write to output"),
- "u32" => parse_input::<u32>().write_to(output).expect("Failed to write to output"),
- "i64" => parse_input::<i64>().write_to(output).expect("Failed to write to output"),
- "u64" => parse_input::<u64>().write_to(output).expect("Failed to write to output"),
- "f32" => parse_input::<f32>().write_to(output).expect("Failed to write to output"),
- "f64" => parse_input::<f64>().write_to(output).expect("Failed to write to output"),
- "int8" => parse_input::<i8>().write_to(output).expect("Failed to write to output"),
- "uint8" => parse_input::<u8>().write_to(output).expect("Failed to write to output"),
- "int16" => parse_input::<i16>().write_to(output).expect("Failed to write to output"),
- "uint16" => parse_input::<u16>().write_to(output).expect("Failed to write to output"),
- "int32" => parse_input::<i32>().write_to(output).expect("Failed to write to output"),
- "uint32" => parse_input::<u32>().write_to(output).expect("Failed to write to output"),
- "int64" => parse_input::<i64>().write_to(output).expect("Failed to write to output"),
- "uint64" => parse_input::<u64>().write_to(output).expect("Failed to write to output"),
- "float32" => parse_input::<f32>().write_to(output).expect("Failed to write to output"),
- "float64" => parse_input::<f64>().write_to(output).expect("Failed to write to output"),
+ "i8" => { parse_input::<i8>()?.write_to(output)?; Ok(()) },
+ "u8" => { parse_input::<u8>()?.write_to(output)?; Ok(()) },
+ "i16" => { parse_input::<i16>()?.write_to(output)?; Ok(()) },
+ "u16" => { parse_input::<u16>()?.write_to(output)?; Ok(()) },
+ "i32" => { parse_input::<i32>()?.write_to(output)?; Ok(()) },
+ "u32" => { parse_input::<u32>()?.write_to(output)?; Ok(()) },
+ "i64" => { parse_input::<i64>()?.write_to(output)?; Ok(()) },
+ "u64" => { parse_input::<u64>()?.write_to(output)?; Ok(()) },
+ "f32" => { parse_input::<f32>()?.write_to(output)?; Ok(()) },
+ "f64" => { parse_input::<f64>()?.write_to(output)?; Ok(()) },
+ "int8" => { parse_input::<i8>()?.write_to(output)?; Ok(()) },
+ "uint8" => { parse_input::<u8>()?.write_to(output)?; Ok(()) },
+ "int16" => { parse_input::<i16>()?.write_to(output)?; Ok(()) },
+ "uint16" => { parse_input::<u16>()?.write_to(output)?; Ok(()) },
+ "int32" => { parse_input::<i32>()?.write_to(output)?; Ok(()) },
+ "uint32" => { parse_input::<u32>()?.write_to(output)?; Ok(()) },
+ "int64" => { parse_input::<i64>()?.write_to(output)?; Ok(()) },
+ "uint64" => { parse_input::<u64>()?.write_to(output)?; Ok(()) },
+ "float32" => { parse_input::<f32>()?.write_to(output)?; Ok(()) },
+ "float64" => { parse_input::<f64>()?.write_to(output)?; 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")))
},
}
}
");
}
-use std::{
- str::FromStr,
- fmt::Debug,
-};
+use std::str::FromStr;
-fn parse_input<T>() -> Vec<T> where
+fn parse_input<T>() -> Result<Vec<T>, Box<dyn Error>> where
T: FromStr,
- <T as FromStr>::Err: Debug
+ <T as FromStr>::Err: Error + 'static
{
use std::io::{BufRead, stdin};
let stdin = stdin();
for line in stdin.lock().lines() {
- values.push(line.unwrap().parse::<T>().unwrap())
+ values.push(line.unwrap().parse::<T>()?)
}
- values
+ Ok(values)
}
--- /dev/null
+//! Utility module for command line interfaces
+
+use std::{fmt, fmt::Display, error::Error};
+
+/// An error struct to wrap simple static error messages
+#[derive(Debug)]
+pub struct CliErr(pub &'static str);
+
+impl Display for CliErr {
+ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+ f.write_str(self.0)
+ }
+}
+
+impl Error for CliErr {}
extern crate time as time_crate;
+pub mod cli;
pub mod index_heap;
pub mod io;
pub mod time;