grepdown-lib 0.1.0

Core library for grepdown: SQLite-backed Markdown indexing, FTS5 search, and link-graph traversal
Documentation 
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use std::path::Path;

use crate::error::Result;
use rusqlite::Connection;

mod init;
mod parse;

#[cfg(test)]
pub use init::bootstrap;

pub const DB_PATH: &str = "md.db";

/// PRAGMAs that must be set on every connection (they are per-connection, not persistent).
const CONNECTION_PRAGMAS: &str = "\
    PRAGMA journal_mode = WAL;
    PRAGMA synchronous = NORMAL;
    PRAGMA foreign_keys = ON;
    PRAGMA cache_size = -8000;
    PRAGMA temp_store = MEMORY;
    PRAGMA mmap_size = 268435456;
";

/** Start the database engine at the default location */
pub fn start(root: &str) -> Result<Connection> {
    let db_path = Path::new(root).join(DB_PATH);
    let conn = Connection::open(&db_path)?;
    conn.execute_batch(CONNECTION_PRAGMAS)?;
    log::debug!(
        "Opened database at {} (WAL, 8MB cache, 256MB mmap)",
        db_path.display()
    );
    init::bootstrap(&conn)?;

    Ok(conn)
}