| /* |
| * 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.ComparisonPolicy; |
| import com.intellij.util.diff.FilesTooBigForDiffException; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.TestOnly; |
| |
| public interface DiffPolicy { |
| @NotNull |
| DiffFragment[] buildFragments(@NotNull DiffString text1, @NotNull DiffString text2) throws FilesTooBigForDiffException; |
| |
| @NotNull |
| @TestOnly |
| DiffFragment[] buildFragments(@NotNull String text1, @NotNull String text2) throws FilesTooBigForDiffException; |
| |
| DiffPolicy LINES_WO_FORMATTING = new LineBlocks(ComparisonPolicy.IGNORE_SPACE); |
| DiffPolicy DEFAULT_LINES = new LineBlocks(ComparisonPolicy.DEFAULT); |
| |
| class LineBlocks implements DiffPolicy { |
| private final ComparisonPolicy myComparisonPolicy; |
| |
| public LineBlocks(ComparisonPolicy comparisonPolicy) { |
| myComparisonPolicy = comparisonPolicy; |
| } |
| |
| @NotNull |
| @TestOnly |
| public DiffFragment[] buildFragments(@NotNull String text1, @NotNull String text2) throws FilesTooBigForDiffException { |
| return buildFragments(DiffString.create(text1), DiffString.create(text2)); |
| } |
| |
| @NotNull |
| @Override |
| public DiffFragment[] buildFragments(@NotNull DiffString text1, @NotNull DiffString text2) throws FilesTooBigForDiffException { |
| DiffString[] strings1 = text1.tokenize(); |
| DiffString[] strings2 = text2.tokenize(); |
| return myComparisonPolicy.buildDiffFragmentsFromLines(strings1, strings2); |
| } |
| |
| } |
| |
| class ByChar implements DiffPolicy { |
| private final ComparisonPolicy myComparisonPolicy; |
| |
| public ByChar(ComparisonPolicy comparisonPolicy) { |
| myComparisonPolicy = comparisonPolicy; |
| } |
| |
| @NotNull |
| @TestOnly |
| public DiffFragment[] buildFragments(@NotNull String text1, @NotNull String text2) throws FilesTooBigForDiffException { |
| return buildFragments(DiffString.create(text1), DiffString.create(text2)); |
| } |
| |
| @NotNull |
| @Override |
| public DiffFragment[] buildFragments(@NotNull DiffString text1, @NotNull DiffString text2) throws FilesTooBigForDiffException { |
| return myComparisonPolicy.buildFragments(splitByChar(text1), splitByChar(text2)); |
| } |
| |
| private static DiffString[] splitByChar(@NotNull DiffString text) { |
| DiffString[] result = new DiffString[text.length()]; |
| for (int i = 0; i < result.length; i++) { |
| result[i] = text.substring(i, i + 1); |
| } |
| return result; |
| } |
| } |
| |
| } |