refactor: refactor

src/process.rs

@@ -0,0 +1,21 @@
+use std::process::Command;
+
+use crate::error::ParseError;
+
+/// Execute an arbitrary Unix command and return the stdout as a `String` if
+/// successful.
+pub fn execute(command: &str, args: &Vec<&str>) -> Result<String, ParseError> {
+    let output = Command::new(command).args(args).output()?;
+
+    if !output.status.success() {
+        let msg = String::from_utf8_lossy(&output.stderr);
+        return Err(ParseError::ProcessFailure(format!(
+            "Process failure: {} {}, error {}",
+            command,
+            args.join(" "),
+            msg
+        )));
+    }
+
+    Ok(String::from_utf8_lossy(&output.stdout).to_string())
+}