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.apache.commons.io.FilenameUtils; 026 import org.sonar.api.BatchComponent; 027 028 import java.io.File; 029 import java.util.Collection; 030 import java.util.List; 031 032 /** 033 * @since 3.5 034 */ 035 public class PathResolver implements BatchComponent { 036 037 public File relativeFile(File dir, String path) { 038 Preconditions.checkArgument(dir.isDirectory(), "Not a directory: " + dir.getAbsolutePath()); 039 File file = new File(path); 040 if (!file.isAbsolute()) { 041 try { 042 file = new File(dir, path).getCanonicalFile(); 043 } catch (Exception e) { 044 throw new IllegalStateException("Fail to resolve path '" + path + "' relative to: " + dir.getAbsolutePath(), e); 045 } 046 } 047 return file; 048 } 049 050 public List<File> relativeFiles(File dir, List<String> paths) { 051 List<File> result = Lists.newArrayList(); 052 for (String path : paths) { 053 result.add(relativeFile(dir, path)); 054 } 055 return result; 056 } 057 058 public RelativePath relativePath(Collection<File> dirs, File file) { 059 List<String> stack = Lists.newArrayList(); 060 String path = FilenameUtils.normalize(file.getAbsolutePath()); 061 File cursor = new File(path); 062 while (cursor != null) { 063 File parentDir = parentDir(dirs, cursor); 064 if (parentDir != null) { 065 return new RelativePath(parentDir, Joiner.on("/").join(stack)); 066 } 067 stack.add(0, cursor.getName()); 068 cursor = cursor.getParentFile(); 069 } 070 return null; 071 } 072 073 public String relativePath(File dir, File file) { 074 List<String> stack = Lists.newArrayList(); 075 String path = FilenameUtils.normalize(file.getAbsolutePath()); 076 File cursor = new File(path); 077 while (cursor != null) { 078 if (containsFile(dir, cursor)) { 079 return Joiner.on("/").join(stack); 080 } 081 stack.add(0, cursor.getName()); 082 cursor = cursor.getParentFile(); 083 } 084 return null; 085 } 086 087 private File parentDir(Collection<File> dirs, File cursor) { 088 for (File dir : dirs) { 089 if (FilenameUtils.equalsNormalizedOnSystem(dir.getAbsolutePath(), cursor.getAbsolutePath())) { 090 return dir; 091 } 092 } 093 return null; 094 } 095 096 private boolean containsFile(File dir, File cursor) { 097 return FilenameUtils.equalsNormalizedOnSystem(dir.getAbsolutePath(), cursor.getAbsolutePath()); 098 } 099 100 public static final class RelativePath { 101 private File dir; 102 private String path; 103 104 public RelativePath(File dir, String path) { 105 this.dir = dir; 106 this.path = path; 107 } 108 109 public File dir() { 110 return dir; 111 } 112 113 public String path() { 114 return path; 115 } 116 } 117 }