booksniff, and one place for the parts every tool shares

crates/cuepack/Cargo.toml

@@ -8,6 +8,7 @@ license.workspace = true
 repository.workspace = true
 
 [dependencies]
+catena-cli.workspace = true
 clap.workspace = true
 corpus-core.workspace = true
 cuekit.workspace = true

crates/cuepack/src/main.rs

@@ -1,6 +1,5 @@
 //! Packs cues into passages worth embedding.
 
-use std::io::{BufWriter, Read, Write};
 use std::path::PathBuf;
 use std::process::ExitCode;
 
@@ -38,7 +37,10 @@ struct Args {
 }
 
 fn main() -> ExitCode {
-    let args = Args::parse();
+    let args: Args = match catena_cli::parse() {
+        Ok(args) => args,
+        Err(code) => return code,
+    };
     let budgets = Budgets {
         seconds: args.seconds,
         max_tokens: args.max_tokens,
@@ -48,11 +50,11 @@ fn main() -> ExitCode {
         return ExitCode::from(exit::USAGE);
     }
 
-    let content = match read(args.path.as_deref()) {
+    let content = match catena_cli::read_lossy(args.path.as_deref()) {
         Ok(content) => content,
-        Err(e) => {
-            eprintln!("cuepack: {e}");
-            return ExitCode::from(exit::IO);
+        Err((code, why)) => {
+            eprintln!("cuepack: {why}");
+            return ExitCode::from(code);
         }
     };
 
@@ -64,25 +66,7 @@ fn main() -> ExitCode {
         }
     };
 
-    let mut out = BufWriter::new(std::io::stdout().lock());
-    for passage in cuepack::pack(&cues, &budgets) {
-        if let Err(e) = ndjson::write_line(&mut out, &passage) {
-            // A consumer that stopped reading is not a failure.
-            if e.is_broken_pipe() {
-                return ExitCode::from(exit::OK);
-            }
-            eprintln!("cuepack: {e}");
-            return ExitCode::from(exit::IO);
-        }
-    }
-    match out.flush() {
-        Ok(()) => ExitCode::from(exit::OK),
-        Err(e) if e.kind() == std::io::ErrorKind::BrokenPipe => ExitCode::from(exit::OK),
-        Err(e) => {
-            eprintln!("cuepack: {e}");
-            ExitCode::from(exit::IO)
-        }
-    }
+    catena_cli::stream("cuepack", &cuepack::pack(&cues, &budgets))
 }
 
 /// Read cues from either encoding: a cue stream begins with a JSON object
@@ -97,15 +81,3 @@ fn cues(content: &str) -> Result<Vec<Cue>, ndjson::Error> {
     }
     Ok(cuekit::parse(content))
 }
-
-fn read(path: Option<&std::path::Path>) -> std::io::Result<String> {
-    let bytes = match path {
-        Some(path) => std::fs::read(path)?,
-        None => {
-            let mut bytes = Vec::new();
-            std::io::stdin().read_to_end(&mut bytes)?;
-            bytes
-        }
-    };
-    Ok(String::from_utf8_lossy(&bytes).into_owned())
-}