Remove truncation when termsize does not report width

This is an issue for terminals that report their width asynchronously.
If zeitfetch is started before the terminal has reported its width, we
should not truncate instead of falling back to a default size.

src/cli.rs

@@ -10,7 +10,7 @@ const ASCII_LOGO: &str = r"
 ";
 pub struct Ctx {
     pub args: Args,
-    pub width: usize,
+    pub width: Option<usize>,
 }
 
 #[derive(Debug, Default)]
@@ -24,7 +24,7 @@ pub struct Args {
 impl Ctx {
     pub fn new() -> Self {
         let args = Args::parse_args();
-        let width = termsize::get().map(|w| w.cols).unwrap_or(80).into();
+        let width = termsize::get().map(|w| w.cols.into());
         Ctx { width, args }
     }
 }

src/main.rs

@@ -48,8 +48,11 @@ fn generate_info(ctx: &cli::Ctx) -> Result<(), Box<dyn std::error::Error>> {
 
     str::from_utf8(&buf)?
         .lines()
-        .map(|s| ansi::truncate(s, ctx.width))
-        .for_each(|s| println!("{}", s));
+        .map(|s| match ctx.width {
+            Some(width) => ansi::truncate(s, width),
+            None => s.to_owned(),
+        })
+        .for_each(|s| println!("{s}"));
 
     Ok(())
 }