/*
Jazzy - a Java library for Spell Checking
Copyright (C) 2001 Mindaugas Idzelis
Full text of license can be found in LICENSE.txt

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
*/
package com.swabunga.spell.event;

/**
 * A basic word finder, which searches text for sequences of letters.
 * 
 * @author Anthony Roy (ajr@antroy.co.uk)
 */
public class JavaWordFinder extends AbstractWordFinder {

	// ~ Instance/static variables ...............................................

	private boolean inComment;

	// ~ Constructors ............................................................

	/**
	 * Creates a new DefaultWordFinder object.
	 * 
	 * @param inText
	 *            the String to search
	 */
	public JavaWordFinder(String inText) {
		super(inText);
	}

	public JavaWordFinder() {
		super();
	}

	// ~ Methods .................................................................

	/**
	 * This method scans the text from the end of the last word, and returns a new Word object corresponding to the next word.
	 * 
	 * @return the next word.
	 * @throws WordNotFoundException
	 *             search string contains no more words.
	 */
	@Override
	public Word next() {

		if (nextWord == null) {
			throw new WordNotFoundException("No more words found.");
		}

		currentWord.copy(nextWord);

		int current = sentenceIterator.current();
		setSentenceIterator(currentWord);

		int i = currentWord.getEnd();
		boolean finished = false;
		boolean started = false;

		search: while (i < text.length() && !finished) {

			i = ignore(i, '@');
			i = ignore(i, "<code>", "</code>");
			i = ignore(i, "<CODE>", "</CODE>");
			i = ignore(i, '<', '>');

			if (i >= text.length()) {
				break search;
			}

			char currentLetter = text.charAt(i);
			if (inComment) {
				// Reset on new line.
				if (currentLetter == '\n') {
					inComment = false;
					i++;
					continue search;
				} else if (!isWordChar(i)) {
					i++;
					continue search;
				}
				// Find words.
				while (i < text.length() - 1) {
					if (!started && isWordChar(i)) {
						nextWord.setStart(i);
						started = true;
					} else if (started && !isWordChar(i)) {
						nextWord.setText(text.substring(nextWord.getStart(), i));
						finished = true;
						break search;
					}

					currentLetter = text.charAt(++i);
				}
			} else if (currentLetter == '*') {
				inComment = true;
				i++;
			} else {
				i++;
			}
		}

		if (!started) {
			nextWord = null;
		} else if (!finished) {
			nextWord.setText(text.substring(nextWord.getStart(), i));
		}

		return currentWord;
	}

	/**
	 * Initializes this word finder
	 */

	@Override
	protected void init() {
		// sentenceIterator = BreakIterator.getSentenceInstance();
		// sentenceIterator.setText(text);
		super.init();
		inComment = false;
	}
}