| /* |
| * Copyright 2000-2013 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.diff.impl.processing; |
| |
| import com.intellij.openapi.diff.impl.string.DiffString; |
| import com.intellij.openapi.diff.ex.DiffFragment; |
| import com.intellij.openapi.diff.impl.fragments.LineFragment; |
| import com.intellij.openapi.diff.impl.util.TextDiffTypeEnum; |
| import com.intellij.openapi.util.TextRange; |
| import com.intellij.openapi.util.text.StringUtil; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.ArrayList; |
| |
| class LineFragmentsCollector { |
| private final ArrayList<LineFragment> myLineFragments = new ArrayList<LineFragment>(); |
| private int myLine1 = 0; |
| private int myLine2 = 0; |
| private int myOffset1 = 0; |
| private int myOffset2 = 0; |
| |
| @NotNull |
| private LineFragment addFragment(@Nullable TextDiffTypeEnum type, @Nullable DiffString text1, @Nullable DiffString text2) { |
| int lines1 = countLines(text1); |
| int lines2 = countLines(text2); |
| int endOffset1 = myOffset1 + getLength(text1); |
| int endOffset2 = myOffset2 + getLength(text2); |
| LineFragment lineFragment = |
| new LineFragment(myLine1, lines1, myLine2, lines2, type, new TextRange(myOffset1, endOffset1), new TextRange(myOffset2, endOffset2)); |
| myLine1 += lines1; |
| myLine2 += lines2; |
| myOffset1 = endOffset1; |
| myOffset2 = endOffset2; |
| myLineFragments.add(lineFragment); |
| return lineFragment; |
| } |
| |
| @NotNull |
| public LineFragment addDiffFragment(@NotNull DiffFragment fragment) { |
| return addFragment(getType(fragment), fragment.getText1(), fragment.getText2()); |
| } |
| |
| static int getLength(@Nullable DiffString text) { |
| return text == null ? 0 : text.length(); |
| } |
| |
| private static int countLines(@Nullable DiffString text) { |
| if (text == null || text.isEmpty()) return 0; |
| int count = StringUtil.countNewLines(text); |
| if (text.charAt(text.length() - 1) != '\n') count++; |
| return count; |
| } |
| |
| public ArrayList<LineFragment> getFragments() { |
| return myLineFragments; |
| } |
| |
| @Nullable |
| static TextDiffTypeEnum getType(@NotNull DiffFragment fragment) { |
| TextDiffTypeEnum type; |
| if (fragment.getText1() == null) type = TextDiffTypeEnum.INSERT; |
| else if (fragment.getText2() == null) type = TextDiffTypeEnum.DELETED; |
| else if (fragment.isModified()) type = TextDiffTypeEnum.CHANGED; |
| else type = null; |
| return type; |
| } |
| } |