skeleton continues

src/main.rs

@@ -1,17 +1,20 @@
-use std::error::Error as StdError;
-use std::io::IsTerminal;
+use std::{error::Error as StdError, sync::Arc};
+use std::io::{self, IsTerminal};
 use std::path::Path;
 use std::process::ExitCode;
 
 
+use append_override::source::SourceFile;
 use clap::{ColorChoice, Parser as _};
+use fs_err::File;
+use fs_err::os::unix::fs::OpenOptionsExt;
 
 fn main_wrapped() -> Result<(), Box<dyn StdError + Send + Sync + 'static>> {
     let args = append_override::Parser::parse();
 
     let success = append_override::CLI_ENABLE_COLOR.set(match args.color {
         ColorChoice::Always => true,
-        ColorChoice::Auto => std::io::stdin().is_terminal(),
+        ColorChoice::Auto => io::stdin().is_terminal(),
         ColorChoice::Never => false,
     });
     if cfg!(debug_assertions) {
@@ -23,8 +26,18 @@ fn main_wrapped() -> Result<(), Box<dyn StdError + Send + Sync + 'static>> {
 
     // Get what file that thing is defined in.
     let def_path = append_override::get_where(&args.name, filepath)?;
+    let def_path = Arc::from(def_path);
+    let mut opts = File::options();
+    opts
+        .read(true)
+        .write(true)
+        .create(false)
+        .custom_flags(libc::O_CLOEXEC);
+    let source_file = SourceFile::open_from(Arc::clone(&def_path), opts)?;
 
-    append_override::get_highest_prio(&args.name, &def_path)?;
+    let last_def_line = append_override::get_highest_prio(&args.name, source_file)?;
+
+    eprintln!("{last_def_line}");
 
     Ok(())
 }