001    /*
002     * Copyright 2010-2013 JetBrains s.r.o.
003     *
004     * Licensed under the Apache License, Version 2.0 (the "License");
005     * you may not use this file except in compliance with the License.
006     * You may obtain a copy of the License at
007     *
008     * http://www.apache.org/licenses/LICENSE-2.0
009     *
010     * Unless required by applicable law or agreed to in writing, software
011     * distributed under the License is distributed on an "AS IS" BASIS,
012     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013     * See the License for the specific language governing permissions and
014     * limitations under the License.
015     */
016    
017    package org.jetbrains.jet.cli.common.messages;
018    
019    import com.intellij.openapi.util.text.StringUtil;
020    import com.intellij.util.containers.ContainerUtil;
021    import org.jetbrains.annotations.NotNull;
022    import org.jetbrains.annotations.Nullable;
023    
024    import java.io.File;
025    import java.util.Collection;
026    
027    public class OutputMessageUtil {
028        private static final String SOURCE_FILES_PREFIX = "Sources:";
029        private static final String OUTPUT_FILES_PREFIX = "Output:";
030    
031        @NotNull
032        public static String formatOutputMessage(Collection<File> sourceFiles, File outputFile) {
033            return OUTPUT_FILES_PREFIX + "\n" + outputFile.getPath() + "\n" +
034                   SOURCE_FILES_PREFIX + "\n" + StringUtil.join(sourceFiles, "\n");
035        }
036    
037        @Nullable
038        public static Output parseOutputMessage(@NotNull String message) {
039            String[] strings = message.split("\n");
040    
041            // Must have at least one line per prefix
042            if (strings.length <= 2) return null;
043    
044            if (!OUTPUT_FILES_PREFIX.equals(strings[0])) return null;
045    
046            if (SOURCE_FILES_PREFIX.equals(strings[1])) {
047                // Output:
048                // Sources:
049                // ...
050                return new Output(parseSourceFiles(strings, 2), null);
051            }
052            else {
053                File outputFile = new File(strings[1]);
054    
055                if (!SOURCE_FILES_PREFIX.equals(strings[2])) return null;
056    
057                return new Output(parseSourceFiles(strings, 3), outputFile);
058            }
059        }
060    
061        private static Collection<File> parseSourceFiles(String[] strings, int start) {
062            Collection<File> sourceFiles = ContainerUtil.newArrayList();
063            for (int i = start; i < strings.length; i++) {
064                sourceFiles.add(new File(strings[i]));
065            }
066            return sourceFiles;
067        }
068    
069        public static class Output {
070            @NotNull
071            public final Collection<File> sourceFiles;
072            @Nullable
073            public final File outputFile;
074    
075            public Output(@NotNull Collection<File> sourceFiles, @Nullable File outputFile) {
076                this.sourceFiles = sourceFiles;
077                this.outputFile = outputFile;
078            }
079        }
080    }