001 /*
002 * SonarQube, open source software quality management tool.
003 * Copyright (C) 2008-2014 SonarSource
004 * mailto:contact AT sonarsource DOT com
005 *
006 * SonarQube is free software; you can redistribute it and/or
007 * modify it under the terms of the GNU Lesser General Public
008 * License as published by the Free Software Foundation; either
009 * version 3 of the License, or (at your option) any later version.
010 *
011 * SonarQube is distributed in the hope that it will be useful,
012 * but WITHOUT ANY WARRANTY; without even the implied warranty of
013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014 * Lesser General Public License for more details.
015 *
016 * You should have received a copy of the GNU Lesser General Public License
017 * along with this program; if not, write to the Free Software Foundation,
018 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
019 */
020 package org.sonar.api.scan.filesystem;
021
022 import com.google.common.base.Joiner;
023 import com.google.common.base.Preconditions;
024 import com.google.common.collect.Lists;
025 import org.sonar.api.BatchComponent;
026 import org.sonar.api.utils.PathUtils;
027
028 import javax.annotation.CheckForNull;
029 import java.io.File;
030 import java.util.Collection;
031 import java.util.List;
032
033 /**
034 * @since 3.5
035 */
036 public class PathResolver implements BatchComponent {
037
038 public File relativeFile(File dir, String path) {
039 Preconditions.checkArgument(dir.isDirectory(), "Not a directory: " + dir.getAbsolutePath());
040 File file = new File(path);
041 if (!file.isAbsolute()) {
042 try {
043 file = new File(dir, path).getCanonicalFile();
044 } catch (Exception e) {
045 throw new IllegalStateException("Fail to resolve path '" + path + "' relative to: " + dir.getAbsolutePath(), e);
046 }
047 }
048 return file;
049 }
050
051 public List<File> relativeFiles(File dir, List<String> paths) {
052 List<File> result = Lists.newArrayList();
053 for (String path : paths) {
054 result.add(relativeFile(dir, path));
055 }
056 return result;
057 }
058
059 @CheckForNull
060 public RelativePath relativePath(Collection<File> dirs, File file) {
061 List<String> stack = Lists.newArrayList();
062 File cursor = file;
063 while (cursor != null) {
064 File parentDir = parentDir(dirs, cursor);
065 if (parentDir != null) {
066 return new RelativePath(parentDir, Joiner.on("/").join(stack));
067 }
068 stack.add(0, cursor.getName());
069 cursor = cursor.getParentFile();
070 }
071 return null;
072 }
073
074 @CheckForNull
075 public String relativePath(File dir, File file) {
076 List<String> stack = Lists.newArrayList();
077 String dirPath = PathUtils.canonicalPath(dir);
078 File cursor = file;
079 while (cursor != null) {
080 if (dirPath.equals(PathUtils.canonicalPath(cursor))) {
081 return Joiner.on("/").join(stack);
082 }
083 stack.add(0, cursor.getName());
084 cursor = cursor.getParentFile();
085 }
086 return null;
087 }
088
089 @CheckForNull
090 private File parentDir(Collection<File> dirs, File cursor) {
091 for (File dir : dirs) {
092 if (PathUtils.canonicalPath(dir).equals(PathUtils.canonicalPath(cursor))) {
093 return dir;
094 }
095 }
096 return null;
097 }
098
099 public static final class RelativePath {
100 private File dir;
101 private String path;
102
103 public RelativePath(File dir, String path) {
104 this.dir = dir;
105 this.path = path;
106 }
107
108 public File dir() {
109 return dir;
110 }
111
112 public String path() {
113 return path;
114 }
115 }
116 }