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-rw-r--r--src/main.rs36
1 files changed, 25 insertions, 11 deletions
diff --git a/src/main.rs b/src/main.rs
index 1c2faf5..d560048 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,5 +1,4 @@
#![warn(
- missing_docs,
unreachable_pub,
unsafe_code,
unused_crate_dependencies,
@@ -10,17 +9,20 @@
)]
#![allow(clippy::redundant_pub_crate, clippy::non_ascii_literal)]
+use std::env::current_dir;
use std::fs::metadata;
use std::io::stdin;
use std::path::PathBuf;
+use anyhow::bail;
+
mod args;
mod makefile;
use args::Args;
use makefile::Makefile;
-fn main() {
+fn main() -> anyhow::Result<()> {
let mut args = Args::from_env_and_args();
// If no makefile is specified, try some options.
if args.makefile.is_empty() {
@@ -29,8 +31,17 @@ fn main() {
} else if metadata("./Makefile").is_ok() {
"./Makefile".into()
} else {
- // TODO handle error gracefully
- panic!("no makefile found");
+ bail!(
+ "no makefile specified and neither {} nor {} was found.",
+ current_dir().map_or_else(
+ |_| "./makefile".to_string(),
+ |path| path.join("makefile").display().to_string()
+ ),
+ current_dir().map_or_else(
+ |_| "./Makefile".to_string(),
+ |path| path.join("Makefile").display().to_string()
+ ),
+ );
}];
}
// Read in the makefile(s) specified.
@@ -40,9 +51,9 @@ fn main() {
let mut makefile = Makefile::new(&args);
for filename in &args.makefile {
if filename == &PathBuf::from("-") {
- makefile.and_read(stdin().lock());
+ makefile.and_read(stdin().lock())?;
} else {
- makefile.and_read_file(filename);
+ makefile.and_read_file(filename)?;
};
}
@@ -51,15 +62,18 @@ fn main() {
}
let targets = if args.targets().count() == 0 {
- vec![makefile
- .first_non_special_target
- .clone()
- .expect("couldn't find a target!")]
+ let first_target = makefile.first_non_special_target.clone();
+ match first_target {
+ Some(x) => vec![x],
+ None => bail!("no targets given on command line or found in makefile."),
+ }
} else {
args.targets().cloned().collect()
};
for target in targets {
- makefile.update_target(&target);
+ makefile.update_target(&target)?;
}
+
+ Ok(())
}