Trait UiSink

Source

pub trait UiSink {
    // Required methods
    fn write_stdout(&mut self, text: &str);
    fn write_stderr(&mut self, text: &str);
}

Expand description

Terminal-facing output sink for stdout/stderr emission.

Implementors should forward or buffer the supplied text exactly as received; higher layers already handle rendering, grouping, and newline decisions. Callers may write to stdout and stderr independently and can assume that empty writes are harmless.

§Examples

use osp_cli::app::UiSink;

#[derive(Default)]
struct CaptureSink {
    stdout: String,
    stderr: String,
}

impl UiSink for CaptureSink {
    fn write_stdout(&mut self, text: &str) {
        self.stdout.push_str(text);
    }

    fn write_stderr(&mut self, text: &str) {
        self.stderr.push_str(text);
    }
}

let mut sink = CaptureSink::default();
sink.write_stdout("ok");
sink.write_stderr("warn");

assert_eq!(sink.stdout, "ok");
assert_eq!(sink.stderr, "warn");