src/bin/decode_vector.rs

   1 extern crate stud_rust_base;
   2 use stud_rust_base::io::*;
   3 use std::env;
   4
   5 fn main() {
   6     let mut args = env::args();
   7     args.next();
   8
   9     match &args.collect::<Vec<String>>()[..] {
  10         [data_type, input] => {
  11             match data_type.as_ref() {
  12                 "i8" => print_values(Vec::<i8>::load_from(input).expect("Failed to read from input")),
  13                 "u8" => print_values(Vec::<u8>::load_from(input).expect("Failed to read from input")),
  14                 "i16" => print_values(Vec::<i16>::load_from(input).expect("Failed to read from input")),
  15                 "u16" => print_values(Vec::<u16>::load_from(input).expect("Failed to read from input")),
  16                 "i32" => print_values(Vec::<i32>::load_from(input).expect("Failed to read from input")),
  17                 "u32" => print_values(Vec::<u32>::load_from(input).expect("Failed to read from input")),
  18                 "i64" => print_values(Vec::<i64>::load_from(input).expect("Failed to read from input")),
  19                 "u64" => print_values(Vec::<u64>::load_from(input).expect("Failed to read from input")),
  20                 "f32" => print_values(Vec::<f32>::load_from(input).expect("Failed to read from input")),
  21                 "f64" => print_values(Vec::<f64>::load_from(input).expect("Failed to read from input")),
  22                 "int8" => print_values(Vec::<i8>::load_from(input).expect("Failed to read from input")),
  23                 "uint8" => print_values(Vec::<u8>::load_from(input).expect("Failed to read from input")),
  24                 "int16" => print_values(Vec::<i16>::load_from(input).expect("Failed to read from input")),
  25                 "uint16" => print_values(Vec::<u16>::load_from(input).expect("Failed to read from input")),
  26                 "int32" => print_values(Vec::<i32>::load_from(input).expect("Failed to read from input")),
  27                 "uint32" => print_values(Vec::<u32>::load_from(input).expect("Failed to read from input")),
  28                 "int64" => print_values(Vec::<i64>::load_from(input).expect("Failed to read from input")),
  29                 "uint64" => print_values(Vec::<u64>::load_from(input).expect("Failed to read from input")),
  30                 "float32" => print_values(Vec::<f32>::load_from(input).expect("Failed to read from input")),
  31                 "float64" => print_values(Vec::<f64>::load_from(input).expect("Failed to read from input")),
  32                 _ => {
  33                     print_usage();
  34                     panic!("Unknown data_type {}", data_type);
  35                 }
  36             };
  37         },
  38         _ => {
  39             print_usage();
  40             panic!("Invalid input")
  41         },
  42     }
  43 }
  44
  45 fn print_usage() {
  46     eprintln!("Usage: decode_vector data_type input_vector_file
  47
  48 Reads binary data from input_vector_file and writes the data to the standard output. data_type can be one of
  49 * i8
  50 * u8
  51 * i16
  52 * u16
  53 * i32
  54 * u32
  55 * i64
  56 * u64
  57 * f32
  58 * f64
  59
  60 ");
  61 }
  62
  63 use std::fmt::Display;
  64
  65 fn print_values<T>(values: Vec<T>) where
  66     T: Display
  67 {
  68     for v in values {
  69         println!("{}", v);
  70     }
  71 }