-extern crate stud_rust_base;
-use stud_rust_base::io::*;
-use std::env;
+use std::{env, error::Error, fmt::Display};
+use stud_rust_base::{cli::CliErr, io::*};
-fn main() {
- let mut args = env::args();
- args.next();
-
- match &args.collect::<Vec<String>>()[..] {
- [data_type, input1, input2] => {
+fn main() -> Result<(), Box<dyn Error>> {
+ let mut args = env::args().skip(1);
+ match &(args.next(), args.next(), args.next()) {
+ (Some(data_type), Some(input1), Some(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" | "int8" => compare_values::<i8>(&Vec::load_from(input1)?, &Vec::load_from(input2)?),
+ "u8" | "uint8" => compare_values::<u8>(&Vec::load_from(input1)?, &Vec::load_from(input2)?),
+ "i16" | "int16" => compare_values::<i16>(&Vec::load_from(input1)?, &Vec::load_from(input2)?),
+ "u16" | "uint16" => compare_values::<u16>(&Vec::load_from(input1)?, &Vec::load_from(input2)?),
+ "i32" | "int32" => compare_values::<i32>(&Vec::load_from(input1)?, &Vec::load_from(input2)?),
+ "u32" | "uint32" => compare_values::<u32>(&Vec::load_from(input1)?, &Vec::load_from(input2)?),
+ "i64" | "int64" => compare_values::<i64>(&Vec::load_from(input1)?, &Vec::load_from(input2)?),
+ "u64" | "uint64" => compare_values::<u64>(&Vec::load_from(input1)?, &Vec::load_from(input2)?),
+ "f32" | "float32" => compare_values::<f32>(&Vec::load_from(input1)?, &Vec::load_from(input2)?),
+ "f64" | "float64" => compare_values::<f64>(&Vec::load_from(input1)?, &Vec::load_from(input2)?),
_ => {
print_usage();
- panic!("Unknown data_type {}", data_type);
+ return Err(Box::new(CliErr("Invalid data type")));
}
};
- },
+ Ok(())
+ }
_ => {
print_usage();
- panic!("Invalid input")
- },
+ Err(Box::new(CliErr("Invalid arguments")))
+ }
}
}
fn print_usage() {
- eprintln!("Usage: decode_vector data_type vector1_file vector2_file
+ eprintln!(
+ "Usage: decode_vector data_type vector1_file vector2_file
Compares two vectors of elements in binary format. data_type can be one of
* i8
* f32
* f64
-");
+"
+ );
}
-use std::fmt::Display;
-
-fn compare_values<T>(values1: &[T], values2: &[T]) where
+fn compare_values<T>(values1: &[T], values2: &[T])
+where
T: Display,
- T: PartialOrd
+ T: PartialOrd,
{
if values1.len() != values2.len() {
- println!("Can only compare vectors of equal size. The first vector has {} elements. The second vector has {} elements.", values1.len(), values2.len());
- return
+ println!("0");
+ eprintln!(
+ "Can only compare vectors of equal size. The first vector has {} elements. The second vector has {} elements.",
+ values1.len(),
+ values2.len()
+ );
+ return;
}
let mut v1_smaller_count = 0;
let mut first_diff = None;
for (i, (v1, v2)) in values1.iter().zip(values2.iter()).enumerate() {
- if v1 < v2 { v1_smaller_count += 1; }
- if v2 < v1 { v2_smaller_count += 1; }
+ if v1 < v2 {
+ v1_smaller_count += 1;
+ }
+ if v2 < v1 {
+ v2_smaller_count += 1;
+ }
if first_diff.is_none() && v1 != v2 {
first_diff = Some(i)
match first_diff {
Some(index) => {
- println!("The vectors differ.");
- println!("{} elements are smaller in the first vector.", v1_smaller_count);
- println!("{} elements are smaller in the second vector.", v2_smaller_count);
- println!("{} elements are the same.", values1.len() - v1_smaller_count - v2_smaller_count);
- println!("{} elements are different.", v1_smaller_count + v2_smaller_count);
- println!("The vectors have {} elements.", values1.len());
- println!("The first element that differs is at index {}.", index);
- },
+ eprintln!("The vectors differ.");
+ eprintln!("{} elements are smaller in the first vector.", v1_smaller_count);
+ eprintln!("{} elements are smaller in the second vector.", v2_smaller_count);
+ eprintln!("{} elements are the same.", values1.len() - v1_smaller_count - v2_smaller_count);
+ println!("{}", values1.len() - v1_smaller_count - v2_smaller_count);
+ eprintln!("{} elements are different.", v1_smaller_count + v2_smaller_count);
+ eprintln!("The vectors have {} elements.", values1.len());
+ eprintln!("The first element that differs is at index {}.", index);
+ }
None => {
- println!("The vectors are the same and have {} elements.", values1.len());
- },
+ println!("{}", values1.len());
+ eprintln!("The vectors are the same and have {} elements.", values1.len());
+ }
}
}
projects / Mitarbeiter / Tim-Zeitz / stud-rust-base.git / blobdiff