2 * Copyright (c) 2016 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.mdsal.binding.model.util;
10 import com.google.common.annotations.Beta;
11 import com.google.common.base.CharMatcher;
12 import com.google.common.base.Strings;
13 import java.util.StringTokenizer;
14 import java.util.regex.Pattern;
15 import org.opendaylight.yangtools.yang.common.QName;
18 public final class FormattingUtils {
19 private static final CharMatcher NEWLINE_OR_TAB = CharMatcher.anyOf("\n\t");
20 private static final Pattern MULTIPLE_SPACES_PATTERN = Pattern.compile(" +");
22 private FormattingUtils() {
23 throw new UnsupportedOperationException();
26 public static String formatToAugmentPath(final Iterable<QName> schemaPath) {
27 final StringBuilder sb = new StringBuilder();
28 for (QName pathElement : schemaPath) {
29 sb.append("\\(").append(pathElement.getNamespace()).append(')').append(pathElement.getLocalName());
34 public static String formatToParagraph(final String text, final int nextLineIndent) {
35 if (Strings.isNullOrEmpty(text)) {
39 final StringBuilder sb = new StringBuilder();
40 final StringBuilder lineBuilder = new StringBuilder();
41 final String lineIndent = " ".repeat(nextLineIndent);
42 final String formattedText = MULTIPLE_SPACES_PATTERN.matcher(NEWLINE_OR_TAB.replaceFrom(text, " "))
44 final StringTokenizer tokenizer = new StringTokenizer(formattedText, " ", true);
46 boolean isFirstElementOnNewLineEmptyChar = false;
47 while (tokenizer.hasMoreElements()) {
48 final String nextElement = tokenizer.nextElement().toString();
50 if (lineBuilder.length() + nextElement.length() > 80) {
51 // Trim trailing whitespace
52 for (int i = lineBuilder.length() - 1; i >= 0 && lineBuilder.charAt(i) != ' '; --i) {
53 lineBuilder.setLength(i);
56 // Trim leading whitespace
57 while (lineBuilder.length() > 0 && lineBuilder.charAt(0) == ' ') {
58 lineBuilder.deleteCharAt(0);
61 sb.append(lineBuilder).append('\n');
62 lineBuilder.setLength(0);
64 if (nextLineIndent > 0) {
65 sb.append(lineIndent);
68 if (" ".equals(nextElement)) {
69 isFirstElementOnNewLineEmptyChar = true;
72 if (isFirstElementOnNewLineEmptyChar) {
73 isFirstElementOnNewLineEmptyChar = false;
75 lineBuilder.append(nextElement);
79 return sb.append(lineBuilder).append('\n').toString();