relay-knowledge 1.1.14

Graph-database-based knowledge graph project.
Documentation 
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//! Generated-source detection shared by scope preview and indexing.

const HEADER_SCAN_BYTES: usize = 8 * 1024;

pub(in crate::code) fn is_generated_file(path: &str, bytes: &[u8]) -> bool {
    path_has_generated_signal(path) || header_has_generated_signal(bytes)
}

pub(in crate::code) fn path_has_generated_signal(path: &str) -> bool {
    let normalized = normalized_path(path);
    let file_name = normalized.rsplit('/').next().unwrap_or(&normalized);
    generated_file_name(file_name) || generated_path_segments(&normalized)
}

fn generated_file_name(file_name: &str) -> bool {
    file_name.ends_with(".pb.go")
        || file_name.ends_with(".pulsar.go")
        || file_name.ends_with(".generated.ts")
        || file_name.ends_with(".generated.tsx")
        || file_name.ends_with(".generated.js")
        || file_name.ends_with(".auto.ts")
        || file_name.ends_with(".auto.tsx")
        || file_name.ends_with(".auto.js")
        || file_name.ends_with(".min.js")
        || file_name.ends_with(".min.css")
}

fn generated_path_segments(path: &str) -> bool {
    let segments = path
        .split('/')
        .filter(|segment| !segment.is_empty())
        .collect::<Vec<_>>();
    segments
        .first()
        .is_some_and(|segment| matches!(*segment, "dist" | "build"))
        || segments
            .windows(2)
            .any(|window| window == ["target", "generated"])
}

fn header_has_generated_signal(bytes: &[u8]) -> bool {
    let header = &bytes[..bytes.len().min(HEADER_SCAN_BYTES)];
    if header.is_empty() || header_contains_nul(header) {
        return false;
    }
    let header = String::from_utf8_lossy(header).to_ascii_lowercase();
    [
        "code generated by",
        "auto-generated",
        "autogenerated",
        "@generated",
        "this file was generated",
        "openapi generator",
        "swagger codegen",
    ]
    .iter()
    .any(|marker| header.contains(marker))
}

fn header_contains_nul(bytes: &[u8]) -> bool {
    bytes.contains(&0)
}

fn normalized_path(path: &str) -> String {
    path.replace('\\', "/").to_ascii_lowercase()
}

#[cfg(test)]
#[path = "mod_tests.rs"]
mod tests;