| /* |
| * Copyright 2000-2011 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.intellij.openapi.vcs.actions; |
| |
| import java.util.Iterator; |
| |
| /** |
| * @author irengrig |
| * Date: 4/27/11 |
| * Time: 3:42 PM |
| */ |
| public class SplittingIterator implements Iterator<Integer> { |
| private final String myContents; |
| // always at the beginning of the _next_ line |
| private int myOffset; |
| |
| public SplittingIterator(final String contents) { |
| myContents = contents; |
| myOffset = 0; |
| } |
| |
| @Override |
| public boolean hasNext() { |
| return myOffset < myContents.length(); |
| } |
| |
| @Override |
| public Integer next() { |
| final int start = myOffset; |
| while (myOffset < myContents.length()) { |
| // \r, \n, or \r\n |
| final char c = myContents.charAt(myOffset); |
| if ('\n' == c) { |
| ++myOffset; |
| break; |
| } |
| else if ('\r' == c) { |
| if (myOffset + 1 == myContents.length()) { |
| // at the end |
| ++myOffset; |
| break; |
| } |
| else { |
| myOffset += (('\n' == myContents.charAt(myOffset + 1)) ? 2 : 1); |
| break; |
| } |
| } |
| ++myOffset; |
| } |
| |
| return start; |
| } |
| |
| @Override |
| public void remove() { |
| throw new UnsupportedOperationException(); |
| } |
| } |