remove file cli flag and add description

README.md

@@ -96,3 +96,23 @@ Full reference:
 ```
 
 See more examples in [examples](examples) folder.
+
+## CLI tool
+
+This library comes with a simple command line tool you can install with:
+
+```sh
+cargo install sayit --features=cli
+```
+
+Interactive session:
+
+```sh
+sayit --accent examples/scotsman.ron
+```
+
+Apply to file:
+
+```sh
+cat filename.txt | sayit --accent examples/french.ron > newfile.txt
+```

src/main.rs

@@ -1,43 +1,23 @@
-use std::{
- fs::{self, File},
- io::{self, BufRead},
- path::PathBuf,
-};
+use sayit::Accent;
 
-use clap::Parser;
+use std::{fs, io, path::PathBuf};
 
-use sayit::Accent;
+use clap::Parser;
 
 #[derive(Parser, Debug)]
 #[command(version, about)]
 struct Args {
- /// Accent file path (currently only ron supported)
+ /// Read accent from file (currently only ron supported)
  #[arg(short, long, group = "accent_def")]
  accent: Option<PathBuf>,
 
- /// Directly provided accent (ron format)
+ /// Read accent from stdin(currently only ron supported)
  #[arg(long, group = "accent_def")]
  accent_string: Option<String>,
 
- /// Accent intensity
+ /// Set intensity
  #[arg(short, long, default_value_t = 0)]
  intensity: u64,
-
- /// File to apply accent to. Reads from stdin if unset
- #[arg(short, long)]
- file: Option<PathBuf>,
-}
-
-fn apply_accent(accent: &Accent, instensity: u64, line: io::Result<String>) -> Result<(), String> {
- println!(
- "{}",
- accent.say_it(
- &line.map_err(|err| format!("reading line: {err}"))?,
- instensity
- )
- );
-
- Ok(())
 }
 
 fn main() -> Result<(), String> {
@@ -54,15 +34,11 @@ fn main() -> Result<(), String> {
  let accent =
  ron::from_str::<Accent>(&accent_string).map_err(|err| format!("parsing accent: {err}"))?;
 
- if let Some(filename) = args.file {
- let file = File::open(filename).map_err(|err| format!("reading input file: {err}"))?;
- for line in io::BufReader::new(file).lines() {
- apply_accent(&accent, args.intensity, line)?;
- }
- } else {
- for line in io::stdin().lines() {
- apply_accent(&accent, args.intensity, line)?;
- }
+ for line in io::stdin().lines() {
+ let line = line.map_err(|err| format!("reading line: {err}"))?;
+ let applied = accent.say_it(&line, args.intensity);
+
+ println!("{applied}");
  }
 
  Ok(())