clipboard: add error handling based on clipboard::Error

src/cmd/clipboard.rs

@@ -29,17 +29,42 @@ use std::io::Read;
 use arboard::Clipboard;
 use serde::Deserialize;
 
-use crate::{util, CliResult};
+use crate::{util, CliError, CliResult};
 
 #[allow(dead_code)]
 #[derive(Deserialize)]
 struct Args {
     flag_save: bool,
 }
 
+impl From<arboard::Error> for CliError {
+    fn from(err: arboard::Error) -> Self {
+        match err {
+            arboard::Error::ClipboardNotSupported => {
+                CliError::Other(format!("The clipboard may not be supported for the current environment."))
+            },
+            arboard::Error::ConversionFailure => {
+                CliError::Other(format!("The content that was about the be transferred to/from the clipboard could not be converted to the appropriate format."))
+            },
+            arboard::Error::ClipboardOccupied => {
+                CliError::Other(format!("The clipboard was unaccessible when attempting to access/use it. It may have been held by another process/thread."))
+            },
+            arboard::Error::ContentNotAvailable => {
+                CliError::Other(format!("The clipboard contents were not available in the requested format. This could either be due to the clipboard being empty or the clipboard contents having an incompatible format to the requested one."))
+            },
+            arboard::Error::Unknown { description: _ } => {
+                CliError::Other(format!("An unknown error occurred while attempting to use the clipboard."))
+            },
+            _ => {
+                CliError::Other(format!("An unexpected error occurred while using the clipboard."))
+            }
+        }
+    }
+}
+
 pub fn run(argv: &[&str]) -> CliResult<()> {
     let args: Args = util::get_args(USAGE, argv)?;
-    let mut clipboard = Clipboard::new().unwrap();
+    let mut clipboard = Clipboard::new()?;
     if args.flag_save {
         let mut buffer = String::new();
         std::io::stdin().read_to_string(&mut buffer)?;