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- /*
- * Copyright (c) 2006-2015 DMDirc Developers
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or 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 NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
- package com.dmdirc.util;
-
- import javax.annotation.Nonnull;
-
- /**
- * Utilities for dealing with strings.
- */
- public final class StringUtils {
-
- private StringUtils() {
- // Shouldn't be instansiated.
- }
-
- /**
- * Returns the indexes for the word surrounding the index in the specified string.
- *
- * @param text Text to get word from
- * @param index Index to get surrounding word
- *
- * @return An array containing two elements: the index of the first character of the word, and
- * the index of the first character beyond the end of the word. If the specified index is not
- * contained within a word (i.e., is whitespace) then 0,0 is returned.
- */
- public static int[] indiciesOfWord(@Nonnull final CharSequence text, final int index) {
- final int start = indexOfStartOfWord(text, index);
- final int end = indexOfEndOfWord(text, index);
-
- if (start > end) {
- return new int[]{0, 0};
- }
-
- return new int[]{start, end};
-
- }
-
- /**
- * Returns the start index for the word surrounding the index in the specified string.
- *
- * @param text Text to get word from
- * @param index Index to get surrounding word
- *
- * @return Start index of the word surrounding the index
- */
- public static int indexOfStartOfWord(@Nonnull final CharSequence text, final int index) {
- int start = index;
-
- // Traverse backwards
- while (start > 0 && start < text.length() && text.charAt(start) != ' ') {
- start--;
- }
- if (start + 1 < text.length() && text.charAt(start) == ' ') {
- start++;
- }
-
- return start;
- }
-
- /**
- * Returns the end index for the word surrounding the index in the specified string.
- *
- * @param text Text to get word from
- * @param index Index to get surrounding word
- *
- * @return End index of the word surrounding the index
- */
- public static int indexOfEndOfWord(@Nonnull final CharSequence text, final int index) {
- int end = index;
-
- // And forwards
- while (end < text.length() && end >= 0 && text.charAt(end) != ' ') {
- end++;
- }
-
- return end;
- }
-
- }
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