001 /* 002 * SonarQube, open source software quality management tool. 003 * Copyright (C) 2008-2013 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 }