mirror of
https://github.com/meilisearch/meilisearch.git
synced 2024-11-23 18:45:06 +08:00
114 lines
3.4 KiB
Rust
114 lines
3.4 KiB
Rust
use std::io::{self, Write};
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use std::path::PathBuf;
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use std::error::Error;
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use termcolor::{Color, ColorChoice, ColorSpec, StandardStream, WriteColor};
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use serde_derive::{Serialize, Deserialize};
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use structopt::StructOpt;
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use meilidb::database::Database;
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use meilidb::Match;
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#[derive(Debug, StructOpt)]
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pub struct Opt {
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/// The destination where the database must be created
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#[structopt(parse(from_os_str))]
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pub database_path: PathBuf,
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/// The number of returned results
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#[structopt(short = "n", long = "number-results", default_value = "10")]
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pub number_results: usize,
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}
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#[derive(Debug, Serialize, Deserialize)]
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struct Document {
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id: String,
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title: String,
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description: String,
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image: String,
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}
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fn display_highlights(text: &str, ranges: &[usize]) -> io::Result<()> {
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let mut stdout = StandardStream::stdout(ColorChoice::Always);
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let mut highlighted = false;
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for range in ranges.windows(2) {
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let [start, end] = match range { [start, end] => [*start, *end], _ => unreachable!() };
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if highlighted {
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stdout.set_color(ColorSpec::new().set_fg(Some(Color::Yellow)))?;
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}
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write!(&mut stdout, "{}", &text[start..end])?;
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stdout.reset()?;
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highlighted = !highlighted;
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}
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Ok(())
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}
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fn create_highlight_areas(text: &str, matches: &[Match], attribute: u16) -> Vec<usize> {
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let mut title_areas = Vec::new();
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title_areas.push(0);
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for match_ in matches {
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if match_.attribute.attribute() == attribute {
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let word_area = match_.word_area;
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let byte_index = word_area.byte_index() as usize;
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let length = word_area.length() as usize;
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title_areas.push(byte_index);
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title_areas.push(byte_index + length);
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}
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}
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title_areas.push(text.len());
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title_areas
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}
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fn main() -> Result<(), Box<Error>> {
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let opt = Opt::from_args();
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let (elapsed, result) = elapsed::measure_time(|| Database::open(&opt.database_path));
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let database = result?;
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println!("database prepared for you in {}", elapsed);
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let mut buffer = String::new();
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let input = io::stdin();
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loop {
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print!("Searching for: ");
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io::stdout().flush()?;
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if input.read_line(&mut buffer)? == 0 { break }
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let query = buffer.trim_end_matches('\n');
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let view = database.view();
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let (elapsed, documents) = elapsed::measure_time(|| {
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let builder = view.query_builder().unwrap();
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builder.query(query, 0..opt.number_results)
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});
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let number_of_documents = documents.len();
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for doc in documents {
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match view.document_by_id::<Document>(doc.id) {
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Ok(document) => {
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print!("title: ");
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let title_areas = create_highlight_areas(&document.title, &doc.matches, 1);
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display_highlights(&document.title, &title_areas)?;
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println!();
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print!("description: ");
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let description_areas = create_highlight_areas(&document.description, &doc.matches, 2);
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display_highlights(&document.description, &description_areas)?;
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println!();
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},
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Err(e) => eprintln!("{}", e),
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}
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}
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println!("Found {} results in {}", number_of_documents, elapsed);
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buffer.clear();
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}
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Ok(())
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}
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