| /*=============================================================================# |
| # Copyright (c) 2011, 2020 Stephan Wahlbrink and others. |
| # |
| # This program and the accompanying materials are made available under the |
| # terms of the Eclipse Public License 2.0 which is available at |
| # https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0 |
| # which is available at https://www.apache.org/licenses/LICENSE-2.0. |
| # |
| # SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 |
| # |
| # Contributors: |
| # Stephan Wahlbrink <sw@wahlbrink.eu> - initial API and implementation |
| #=============================================================================*/ |
| |
| package org.eclipse.statet.jcommons.text.core.util; |
| |
| import java.util.Arrays; |
| |
| import org.eclipse.statet.jcommons.lang.NonNullByDefault; |
| import org.eclipse.statet.jcommons.text.core.BasicTextLineInformation; |
| import org.eclipse.statet.jcommons.text.core.TextLineInformation; |
| |
| |
| @NonNullByDefault |
| public class TextLineInformationCreator { |
| |
| |
| private int[] buffer= new int[2048]; |
| |
| |
| public TextLineInformationCreator() { |
| } |
| |
| |
| public TextLineInformation create(final String text) { |
| int[] lines= this.buffer; |
| int line= 0; |
| lines[0]= 0; |
| for (int offset= 0; offset < text.length(); ) { |
| final int c= text.charAt(offset++); |
| switch (c) { |
| case '\r': |
| if (offset < text.length() && text.charAt(offset) == '\n') { |
| offset++; |
| } |
| break; |
| case '\n': |
| break; |
| default: |
| continue; |
| } |
| if (++line >= lines.length) { |
| lines= this.buffer= Arrays.copyOf(lines, lines.length + 2048); |
| } |
| lines[line]= offset; |
| } |
| return new BasicTextLineInformation(Arrays.copyOf(lines, line + 1), text.length()); |
| } |
| |
| } |