build(ariadne): vendor clap

third_party/crates/anstyle-wincon-3.0.11/examples/set-wincon.rs

@@ -0,0 +1,61 @@
+//! Interactively manipulate wincon colors
+
+#![cfg_attr(not(windows), allow(dead_code))]
+
+#[cfg(not(windows))]
+fn main() {
+    panic!("unsupported");
+}
+
+#[cfg(windows)]
+fn main() -> Result<(), lexopt::Error> {
+    use anstyle_wincon::WinconStream as _;
+
+    let args = Args::parse()?;
+    let stdout = std::io::stdout();
+    let mut stdout = stdout.lock();
+
+    let fg = args.fg.and_then(|c| c.into_ansi());
+    let bg = args.bg.and_then(|c| c.into_ansi());
+
+    let _ = stdout.write_colored(fg, bg, b"");
+
+    #[allow(clippy::mem_forget)]
+    std::mem::forget(stdout);
+
+    Ok(())
+}
+
+#[derive(Default)]
+struct Args {
+    fg: Option<anstyle::Ansi256Color>,
+    bg: Option<anstyle::Ansi256Color>,
+}
+
+impl Args {
+    fn parse() -> Result<Self, lexopt::Error> {
+        use lexopt::prelude::*;
+
+        let mut res = Args::default();
+
+        let mut args = lexopt::Parser::from_env();
+        while let Some(arg) = args.next()? {
+            match arg {
+                Long("fg") => {
+                    res.fg = Some(
+                        args.value()?
+                            .parse_with(|s| s.parse::<u8>().map(anstyle::Ansi256Color))?,
+                    );
+                }
+                Long("bg") => {
+                    res.fg = Some(
+                        args.value()?
+                            .parse_with(|s| s.parse::<u8>().map(anstyle::Ansi256Color))?,
+                    );
+                }
+                _ => return Err(arg.unexpected()),
+            }
+        }
+        Ok(res)
+    }
+}