Function detect

nodedb/src/control/backup/detect.rs:18–34

Returns Some(intent) if the SQL is one of the recognised wire-COPY shapes. Tokenisation is whitespace-only and case-insensitive on keywords.

(sql: &str)

/// Returns Some(intent) if the SQL is one of the recognised wire-COPY shapes.
/// Tokenisation is whitespace-only and case-insensitive on keywords.
pub fn detect(sql: &str) -> Option<CopyIntent> {
    let trimmed = sql.trim().trim_end_matches(';').trim();
    let upper = trimmed.to_ascii_uppercase();

    // Quick reject: every recognised shape starts with COPY.
    if !upper.starts_with("COPY ") && !upper.starts_with("COPY\t") {
        return None;
    }

    if let Some(intent) = match_backup(trimmed, &upper) {
        return Some(intent);
    }
    if let Some(intent) = match_restore(trimmed, &upper) {
        return Some(intent);
    }
    None
}

fn match_backup(sql: &str, upper: &str) -> Option<CopyIntent> {
    // Pattern: COPY ( BACKUP TENANT <id> ) TO STDOUT