error handling

Cargo.toml

@@ -15,7 +15,7 @@ keywords = ["tree", "find", "ls", "du", "commandline"]
 exclude = ["assets/*", "scripts/*", "example/*"]
 readme = "README.md"
 license = "MIT"
-rust-version = "1.70.0"
+rust-version = "1.73.0"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
@@ -25,6 +25,7 @@ path = "src/main.rs"
 
 [dependencies]
 ansi_term = "0.12.1"
+anyhow = "1.0.75"
 chrono = "0.4.24"
 clap = { version = "4.1.1", features = ["derive"] }
 clap_complete = "4.1.1"

src/cli/mod.rs

@@ -0,0 +1,41 @@
+use crate::error::{self, ErrorReport, Result, WithContext};
+use clap::Parser;
+use std::{env, path::PathBuf};
+
+#[derive(Parser, Debug)]
+#[command(name = "erdtree")]
+#[command(author = "Benjamin Nguyen. <[email protected]>")]
+#[command(version = "4.0.0")]
+#[command(
+    about = "erdtree (erd) is a cross-platform, multi-threaded, and general purpose filesystem and disk usage utility.",
+    long_about = None,
+)]
+pub struct Args {
+    /// Directory to traverse; defaults to current working directory
+    dir: Option<PathBuf>,
+}
+
+impl Args {
+    pub fn init() -> Result<Self> {
+        let mut clargs = Self::parse();
+        clargs.set_dir()?;
+        Ok(clargs)
+    }
+
+    fn set_dir(&mut self) -> Result<()> {
+        let current_dir = env::current_dir().into_report(error::Category::System)?;
+
+        Err(std::io::Error::new(
+            std::io::ErrorKind::Other,
+            "This is the underlying error",
+        ))
+        .into_report(error::Category::User)
+        .context("Oh my god...")
+        .context("Look at her butt")
+        .context("omg..")?;
+
+        //.into_report_ctx(error::Category::Internal, "hmmmm")?;
+
+        Ok(())
+    }
+}