Witch of Git - ivy/blob - src/bin/filecheck.rs

   1 use filecheck;
   2 use std::{io::prelude::*, process};
   3
   4 fn main() {
   5     let fname = match std::env::args().nth(1) {
   6         Some(fname) => fname,
   7         None => {
   8             println!("Usage: filecheck <pattern-file>");
   9             process::exit(1);
  10         }
  11     };
  12
  13     let text = match std::fs::read_to_string(&fname) {
  14         Ok(text) => text,
  15         Err(err) => {
  16             println!("Error: failed to read '{}':\n{}", fname, err);
  17             process::exit(1);
  18         }
  19     };
  20
  21     let checker = match filecheck::CheckerBuilder::new().text(&text) {
  22         Ok(builder) => builder.finish(),
  23         Err(err) => {
  24             println!("Error parsing check directives: {}", err);
  25             process::exit(1);
  26         }
  27     };
  28
  29     let mut buffer = String::new();
  30     if let Err(err) = std::io::stdin().read_to_string(&mut buffer) {
  31         println!("Error reading from stdin: {}", err);
  32         process::exit(1);
  33     }
  34
  35     let (success, explanation) = match checker.explain(&buffer, &()) {
  36         Ok(res) => res,
  37         Err(err) => {
  38             println!("Error checking: {}", err);
  39             process::exit(1);
  40         }
  41     };
  42
  43     if !success {
  44         println!("{}", explanation);
  45         process::exit(1);
  46     }
  47 }