magi-code 0.96.1

Repository-aware CLI coding agent for terminal work
Documentation 
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use xxhash_rust::xxh32::xxh32;

pub(crate) const HASHLINE_FILE_HASH_LENGTH: usize = 4;

pub(crate) fn compute_file_hash(text: &str) -> String {
    let normalized = normalize_file_hash_text(text);
    let low16 = xxh32(normalized.as_bytes(), 0) & 0xffff;
    format!("{low16:0HASHLINE_FILE_HASH_LENGTH$X}")
}

pub(crate) fn format_hashline_header(path: &str, tag: &str) -> String {
    format!("[{path}#{tag}]")
}

pub(crate) fn format_numbered_lines(lines: &[(usize, String)]) -> Vec<String> {
    lines
        .iter()
        .map(|(line_number, line)| format!("{line_number}:{line}"))
        .collect()
}

fn normalize_file_hash_text(text: &str) -> String {
    let mut output = String::with_capacity(text.len());
    let bytes = text.as_bytes();
    let mut start = 0usize;
    for (index, byte) in bytes.iter().enumerate() {
        if *byte == b'\n' {
            let mut end = index;
            while end > start && matches!(bytes[end - 1], b' ' | b'\t' | b'\r') {
                end -= 1;
            }
            output.push_str(&text[start..end]);
            output.push('\n');
            start = index + 1;
        }
    }
    let mut end = text.len();
    while end > start && matches!(bytes[end - 1], b' ' | b'\t' | b'\r') {
        end -= 1;
    }
    output.push_str(&text[start..end]);
    output
}