ItemAcquisitionLineParser.java

/* Copyright (c) 2008-2010, developers of the Ascension Log Visualizer
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
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 * sell copies of the Software, and to permit persons to whom
 * the Software is furnished to do so, subject to the following
 * conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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package com.googlecode.logVisualizer.parser.lineParsers;

import java.util.Scanner;
import java.util.regex.MatchResult;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import com.googlecode.logVisualizer.logData.Item;
import com.googlecode.logVisualizer.logData.LogDataHolder;
import com.googlecode.logVisualizer.logData.turn.TurnInterval;
import com.googlecode.logVisualizer.parser.UsefulPatterns;

/**
 * A parser for the item acquired notation in mafia logs.
 * <p>
 * The format looks like this:
 * <p>
 * {@code You acquire an item: _item name_}
 * <p>
 * OR
 * <p>
 * {@code You acquire _number of items_ _item name_}
 * <p>
 * OR
 * <p>
 * {@code You acquire _item name_ (_number of items_)}
 */
public final class ItemAcquisitionLineParser extends AbstractLineParser {
    private static final Pattern MULTIPLE_ITEMS_OLD = Pattern
            .compile("You acquire \\d+[\\s\\w\\p{Punct}]+");
    private static final Pattern MULTIPLE_ITEMS_NEW = Pattern
            .compile("You acquire [\\s\\w\\p{Punct}]+ \\(\\d+\\)");
    private static final Pattern MULTIPLE_ITEMS_OLD_CAPTURE_PATTERN = Pattern
            .compile("You acquire (\\d*,?\\d+) (.+)");
    private static final Pattern MULTIPLE_ITEMS_NEW_CAPTURE_PATTERN = Pattern
            .compile("You acquire (.+) \\((\\d*,?\\d+)\\)");
    private static final String SINGLE_ITEM_STRING = "You acquire an item: ";
    private static final String ACQUIRE_STRING = "You acquire";
    private final Matcher multipleItemsOldMatcher = ItemAcquisitionLineParser.MULTIPLE_ITEMS_OLD
            .matcher(UsefulPatterns.EMPTY_STRING);
    private final Matcher multipleItemsNewMatcher = ItemAcquisitionLineParser.MULTIPLE_ITEMS_NEW
            .matcher(UsefulPatterns.EMPTY_STRING);

    /**
     * {@inheritDoc}
     */
    @Override
    protected void doParsing(final String line, final LogDataHolder logData) {
        final String itemName;
        int amount = 1;
        // Check whether it's only a single item acquisition or not and act
        // based on it.
        if (line.startsWith(ItemAcquisitionLineParser.SINGLE_ITEM_STRING)) {
            itemName = line
                    .substring(ItemAcquisitionLineParser.SINGLE_ITEM_STRING
                            .length());
        } else if (this.multipleItemsOldMatcher.reset(line).matches()) {
            try (final Scanner scanner = new Scanner(line)) {
                scanner.findInLine(ItemAcquisitionLineParser.MULTIPLE_ITEMS_OLD_CAPTURE_PATTERN);
                final MatchResult result = scanner.match();
                if (result.group(1).contains(UsefulPatterns.COMMA)) {
                    amount = Integer.parseInt(result.group(1).replace(
                            UsefulPatterns.COMMA, UsefulPatterns.EMPTY_STRING));
                } else {
                    amount = Integer.parseInt(result.group(1));
                }
                itemName = result.group(2);
                scanner.close();
            }
        } else {
            try (final Scanner scanner = new Scanner(line)) {
                scanner.findInLine(ItemAcquisitionLineParser.MULTIPLE_ITEMS_NEW_CAPTURE_PATTERN);
                final MatchResult result = scanner.match();
                itemName = result.group(1);
                if (result.group(2).contains(UsefulPatterns.COMMA)) {
                    amount = Integer.parseInt(result.group(2).replace(
                            UsefulPatterns.COMMA, UsefulPatterns.EMPTY_STRING));
                } else {
                    amount = Integer.parseInt(result.group(2));
                }
                scanner.close();
            }
        }
        final TurnInterval currentInterval = logData.getTurnsSpent().last();
        currentInterval.addDroppedItem(new Item(itemName, amount,
                currentInterval.getEndTurn()));
    }

    /**
     * {@inheritDoc}
     */
    @Override
    protected boolean isCompatibleLine(final String line) {
        return line.startsWith(ItemAcquisitionLineParser.ACQUIRE_STRING)
                && (line.startsWith(ItemAcquisitionLineParser.SINGLE_ITEM_STRING)
                        || this.multipleItemsOldMatcher.reset(line).matches() || this.multipleItemsNewMatcher
                        .reset(line).matches());
    }
}