build(ariadne): vendor clap

third_party/crates/anstyle-parse-1.0.0/examples/parselog.rs

@@ -0,0 +1,72 @@
+//! Parse input from stdin and log actions on stdout
+use std::io::{self, Read};
+
+use anstyle_parse::{DefaultCharAccumulator, Params, Parser, Perform};
+
+/// A type implementing Perform that just logs actions
+struct Log;
+
+impl Perform for Log {
+    fn print(&mut self, c: char) {
+        println!("[print] {c:?}");
+    }
+
+    fn execute(&mut self, byte: u8) {
+        println!("[execute] {byte:02x}");
+    }
+
+    fn hook(&mut self, params: &Params, intermediates: &[u8], ignore: bool, c: u8) {
+        println!(
+            "[hook] params={params:?}, intermediates={intermediates:?}, ignore={ignore:?}, char={c:?}"
+        );
+    }
+
+    fn put(&mut self, byte: u8) {
+        println!("[put] {byte:02x}");
+    }
+
+    fn unhook(&mut self) {
+        println!("[unhook]");
+    }
+
+    fn osc_dispatch(&mut self, params: &[&[u8]], bell_terminated: bool) {
+        println!("[osc_dispatch] params={params:?} bell_terminated={bell_terminated}");
+    }
+
+    fn csi_dispatch(&mut self, params: &Params, intermediates: &[u8], ignore: bool, c: u8) {
+        println!(
+            "[csi_dispatch] params={params:#?}, intermediates={intermediates:?}, ignore={ignore:?}, char={c:?}"
+        );
+    }
+
+    fn esc_dispatch(&mut self, intermediates: &[u8], ignore: bool, byte: u8) {
+        println!(
+            "[esc_dispatch] intermediates={intermediates:?}, ignore={ignore:?}, byte={byte:02x}"
+        );
+    }
+}
+
+fn main() {
+    let input = io::stdin();
+    let mut handle = input.lock();
+
+    let mut statemachine = Parser::<DefaultCharAccumulator>::new();
+    let mut performer = Log;
+
+    let mut buf = [0; 2048];
+
+    loop {
+        match handle.read(&mut buf) {
+            Ok(0) => break,
+            Ok(n) => {
+                for byte in &buf[..n] {
+                    statemachine.advance(&mut performer, *byte);
+                }
+            }
+            Err(err) => {
+                println!("err: {err}");
+                break;
+            }
+        }
+    }
+}