lean-ctx-patterns 0.1.0

Deterministic shell-output compression patterns and token counting for LeanCTX | OSS.
Documentation 
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// SPDX-License-Identifier: Apache-2.0

//! ANSI escape handling shared by the patterns and the engine compressor.

/// Removes ANSI escape codes from a string, returning clean text.
pub fn strip_ansi(s: &str) -> String {
    if !s.contains('\x1b') {
        return s.to_string();
    }
    let mut result = String::with_capacity(s.len());
    let mut in_escape = false;
    for c in s.chars() {
        if c == '\x1b' {
            in_escape = true;
            continue;
        }
        if in_escape {
            if c.is_ascii_alphabetic() {
                in_escape = false;
            }
            continue;
        }
        result.push(c);
    }
    result
}