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 = Strings.repeat(" ", nextLineIndent);
42 final String formattedText = MULTIPLE_SPACES_PATTERN.matcher(NEWLINE_OR_TAB.removeFrom(text)).replaceAll(" ");
43 final StringTokenizer tokenizer = new StringTokenizer(formattedText, " ", true);
45 boolean isFirstElementOnNewLineEmptyChar = false;
46 while (tokenizer.hasMoreElements()) {
47 final String nextElement = tokenizer.nextElement().toString();
49 if (lineBuilder.length() + nextElement.length() > 80) {
50 // Trim trailing whitespace
51 for (int i = lineBuilder.length() - 1; i >= 0 && lineBuilder.charAt(i) != ' '; --i) {
52 lineBuilder.setLength(i);
55 // Trim leading whitespace
56 while (lineBuilder.length() > 0 && lineBuilder.charAt(0) == ' ') {
57 lineBuilder.deleteCharAt(0);
60 sb.append(lineBuilder).append('\n');
61 lineBuilder.setLength(0);
63 if (nextLineIndent > 0) {
64 sb.append(lineIndent);
67 if (" ".equals(nextElement)) {
68 isFirstElementOnNewLineEmptyChar = true;
71 if (isFirstElementOnNewLineEmptyChar) {
72 isFirstElementOnNewLineEmptyChar = false;
74 lineBuilder.append(nextElement);
78 return sb.append(lineBuilder).append('\n').toString();