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        public static String formatOutputMessage(Collection<File> sourceFiles, File outputFile) {
032            return OUTPUT_FILES_PREFIX + "\n" + outputFile.getPath() + "\n" +
033                   SOURCE_FILES_PREFIX + "\n" + StringUtil.join(sourceFiles, "\n");
034        }
035    
036        @Nullable
037        public static Output parseOutputMessage(@NotNull String message) {
038            String[] strings = message.split("\n");
039    
040            // Must have at least one line per prefix
041            if (strings.length <= 2) return null;
042    
043            if (!OUTPUT_FILES_PREFIX.equals(strings[0])) return null;
044    
045            if (SOURCE_FILES_PREFIX.equals(strings[1])) {
046                // Output:
047                // Sources:
048                // ...
049                return new Output(parseSourceFiles(strings, 2), null);
050            }
051            else {
052                File outputFile = new File(strings[1]);
053    
054                if (!SOURCE_FILES_PREFIX.equals(strings[2])) return null;
055    
056                return new Output(parseSourceFiles(strings, 3), outputFile);
057            }
058        }
059    
060        private static Collection<File> parseSourceFiles(String[] strings, int start) {
061            Collection<File> sourceFiles = ContainerUtil.newArrayList();
062            for (int i = start; i < strings.length; i++) {
063                sourceFiles.add(new File(strings[i]));
064            }
065            return sourceFiles;
066        }
067    
068        public static class Output {
069            @NotNull
070            public final Collection<File> sourceFiles;
071            @Nullable
072            public final File outputFile;
073    
074            public Output(@NotNull Collection<File> sourceFiles, @Nullable File outputFile) {
075                this.sourceFiles = sourceFiles;
076                this.outputFile = outputFile;
077            }
078        }
079    }