feat: allow specifying arguments for the formatter

cbundl.toml

@@ -11,8 +11,9 @@ enable = true
 pick = "custom"
 
 [formatter]
-# enable = true
-# path = "clang-format"
+enable = true
+path = "clang-format"
+args = ["--verbose", "--sort-includes"]
 
 [[quote]]
 text = """

src/cli.rs

@@ -36,6 +36,7 @@ pub fn run() -> Result<()> {
 
     let formatter = (!config.no_format).then_some(Formatter {
         exe: config.formatter,
+        args: config.formatter_args,
     });
 
     let mut pipeline = Pipeline {

src/config.rs

@@ -103,6 +103,7 @@ struct QuoteSection {
 struct FormatterSection {
     enable: Option<bool>,
     path: Option<PathBuf>,
+    args: Option<Vec<String>>,
 }
 
 impl File {
@@ -176,6 +177,7 @@ pub struct Config {
 
     pub no_format: bool,
     pub formatter: PathBuf,
+    pub formatter_args: Vec<String>,
 
     pub entry: PathBuf,
 }
@@ -278,6 +280,12 @@ impl Config {
             })
             .unwrap_or_else(|| PathBuf::from(DEFAULT_FORMATTER));
 
+        let formatter_args = file
+            .as_ref()
+            .and_then(|x| x.formatter.as_ref())
+            .and_then(|x| x.args.clone())
+            .unwrap_or_default();
+
         let entry = args.value::<PathBuf>("entry").unwrap().clone();
 
         Ok(Self {
@@ -292,6 +300,7 @@ impl Config {
 
             no_format,
             formatter,
+            formatter_args,
 
             entry,
         })

src/formatter.rs

@@ -4,11 +4,13 @@ use std::process::{Command, Stdio};
 
 use eyre::{bail, Context, Result};
 
+use crate::display::display_path;
 use crate::pipeline::Stage;
 
 #[derive(Debug, Clone)]
 pub struct Formatter {
     pub exe: PathBuf,
+    pub args: Vec<String>,
 }
 
 impl Stage for Formatter {
@@ -18,15 +20,18 @@ impl Stage for Formatter {
 
     fn process(&mut self, code: String) -> Result<String> {
         let mut p = Command::new(&self.exe)
+            .args(&self.args)
             .stdin(Stdio::piped())
             .stdout(Stdio::piped())
             .stderr(Stdio::inherit())
-            .spawn()?;
+            .spawn()
+            .with_context(|| format!("failed to run formatter `{}`", display_path(&self.exe)))?;
 
         p.stdin
             .as_mut()
             .expect("stdin was captured but was also None")
-            .write_all(code.as_bytes())?;
+            .write_all(code.as_bytes())
+            .context("failed to write bundle to formatter's stdin")?;
 
         let p = p.wait_with_output()?;