001package edu.pdx.cs410J.airlineweb;
002
003import edu.pdx.cs410J.ParserException;
004
005import java.io.BufferedReader;
006import java.io.IOException;
007import java.io.Reader;
008import java.util.HashMap;
009import java.util.Map;
010import java.util.regex.Matcher;
011import java.util.regex.Pattern;
012
013public class TextParser {
014  private final Reader reader;
015
016  public TextParser(Reader reader) {
017    this.reader = reader;
018  }
019
020  public Map<String, String> parse() throws ParserException {
021    Pattern pattern = Pattern.compile("(.*) : (.*)");
022
023    Map<String, String> map = new HashMap<>();
024
025    try (
026      BufferedReader br = new BufferedReader(this.reader)
027    ) {
028
029      for (String line = br.readLine(); line != null; line = br.readLine()) {
030        Matcher matcher = pattern.matcher(line);
031        if (!matcher.find()) {
032          throw new ParserException("Unexpected text: " + line);
033        }
034
035        String word = matcher.group(1);
036        String definition = matcher.group(2);
037
038        map.put(word, definition);
039      }
040
041    } catch (IOException e) {
042      throw new ParserException("While parsing dictionary", e);
043    }
044
045    return map;
046  }
047}