factor out do_append in prep for delta subcommands

src/main.rs

@@ -1,17 +1,11 @@
-use std::ffi::OsStr;
 use std::io::{self, IsTerminal};
-use std::iter;
-use std::path::{Path, PathBuf};
 use std::process::ExitCode;
 use std::{error::Error as StdError, sync::Arc};
 
-use dynix::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 = dynix::Parser::parse();
+    let args = Arc::new(dynix::Args::parse());
 
     dbg!(&args);
 
@@ -24,40 +18,11 @@ fn main_wrapped() -> Result<(), Box<dyn StdError + Send + Sync + 'static>> {
         success.expect("logic error in CLI_ENABLE_COLOR");
     }
 
-    let filepath = Path::new(&args.file);
-    let filepath: PathBuf = if filepath.is_relative() && !filepath.starts_with("./") {
-        iter::once(OsStr::new("./"))
-            .chain(filepath.iter())
-            .collect()
-    } else {
-        filepath.to_path_buf()
+    use dynix::args::Subcommand::*;
+    match &args.subcommand {
+        Append(append_args) => dynix::do_append(args.clone(), append_args.clone())?,
     };
 
-    // Get what file that thing is defined in.
-    let def_path = dynix::get_where(&args.name, &filepath)?;
-    dbg!(&def_path);
-    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)?;
-
-    let pri = dynix::get_highest_prio(&args.name, source_file.clone())?;
-    let new_pri = pri - 1;
-
-    let new_pri_line = dynix::get_next_prio_line(
-        source_file.clone(),
-        args.name.into(),
-        new_pri,
-        args.value.into(),
-    )?;
-
-    eprintln!("new_pri_line={new_pri_line}");
-
-    dynix::write_next_prio(source_file, new_pri_line)?;
-
     Ok(())
 }