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 */ 020package org.sonar.api.scan.filesystem; 021 022import com.google.common.base.Joiner; 023import com.google.common.base.Preconditions; 024import com.google.common.collect.Lists; 025import org.sonar.api.BatchComponent; 026import org.sonar.api.utils.PathUtils; 027 028import javax.annotation.CheckForNull; 029 030import java.io.File; 031import java.util.Collection; 032import java.util.List; 033 034/** 035 * @since 3.5 036 */ 037public class PathResolver implements BatchComponent { 038 039 public File relativeFile(File dir, String path) { 040 Preconditions.checkArgument(dir.isDirectory(), "Not a directory: " + dir.getAbsolutePath()); 041 File file = new File(path); 042 if (!file.isAbsolute()) { 043 try { 044 file = new File(dir, path).getAbsoluteFile(); 045 } catch (Exception e) { 046 throw new IllegalStateException("Fail to resolve path '" + path + "' relative to: " + dir.getAbsolutePath(), e); 047 } 048 } 049 return file; 050 } 051 052 public List<File> relativeFiles(File dir, List<String> paths) { 053 List<File> result = Lists.newArrayList(); 054 for (String path : paths) { 055 result.add(relativeFile(dir, path)); 056 } 057 return result; 058 } 059 060 @CheckForNull 061 public RelativePath relativePath(Collection<File> dirs, File file) { 062 List<String> stack = Lists.newArrayList(); 063 File cursor = file; 064 while (cursor != null) { 065 File parentDir = parentDir(dirs, cursor); 066 if (parentDir != null) { 067 return new RelativePath(parentDir, Joiner.on("/").join(stack)); 068 } 069 stack.add(0, cursor.getName()); 070 cursor = cursor.getParentFile(); 071 } 072 return null; 073 } 074 075 @CheckForNull 076 public String relativePath(File dir, File file) { 077 List<String> stack = Lists.newArrayList(); 078 String dirPath = PathUtils.canonicalPath(dir); 079 File cursor = file; 080 while (cursor != null) { 081 if (dirPath.equals(PathUtils.canonicalPath(cursor))) { 082 return Joiner.on("/").join(stack); 083 } 084 stack.add(0, cursor.getName()); 085 cursor = cursor.getParentFile(); 086 } 087 return null; 088 } 089 090 @CheckForNull 091 private File parentDir(Collection<File> dirs, File cursor) { 092 for (File dir : dirs) { 093 if (PathUtils.canonicalPath(dir).equals(PathUtils.canonicalPath(cursor))) { 094 return dir; 095 } 096 } 097 return null; 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}