001/* 002 * SonarQube 003 * Copyright (C) 2009-2016 SonarSource SA 004 * mailto:contact AT sonarsource DOT com 005 * 006 * This program 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 * This program 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 org.sonar.api.batch.BatchSide; 025import org.sonar.api.utils.PathUtils; 026 027import javax.annotation.CheckForNull; 028 029import java.io.File; 030import java.util.ArrayList; 031import java.util.Collection; 032import java.util.List; 033 034/** 035 * @since 3.5 036 */ 037@BatchSide 038public class PathResolver { 039 040 public File relativeFile(File dir, String path) { 041 Preconditions.checkArgument(dir.isDirectory(), "Not a directory: " + dir.getAbsolutePath()); 042 File file = new File(path); 043 if (!file.isAbsolute()) { 044 try { 045 file = new File(dir, path).getAbsoluteFile(); 046 } catch (Exception e) { 047 throw new IllegalStateException("Fail to resolve path '" + path + "' relative to: " + dir.getAbsolutePath(), e); 048 } 049 } 050 return file; 051 } 052 053 public List<File> relativeFiles(File dir, List<String> paths) { 054 List<File> result = new ArrayList<>(); 055 for (String path : paths) { 056 result.add(relativeFile(dir, path)); 057 } 058 return result; 059 } 060 061 @CheckForNull 062 public RelativePath relativePath(Collection<File> dirs, File file) { 063 List<String> stack = new ArrayList<>(); 064 File cursor = file; 065 while (cursor != null) { 066 File parentDir = parentDir(dirs, cursor); 067 if (parentDir != null) { 068 return new RelativePath(parentDir, Joiner.on("/").join(stack)); 069 } 070 stack.add(0, cursor.getName()); 071 cursor = cursor.getParentFile(); 072 } 073 return null; 074 } 075 076 @CheckForNull 077 public String relativePath(File dir, File file) { 078 List<String> stack = new ArrayList<>(); 079 String dirPath = PathUtils.canonicalPath(dir); 080 File cursor = file; 081 while (cursor != null) { 082 if (dirPath.equals(PathUtils.canonicalPath(cursor))) { 083 return Joiner.on("/").join(stack); 084 } 085 stack.add(0, cursor.getName()); 086 cursor = cursor.getParentFile(); 087 } 088 return null; 089 } 090 091 @CheckForNull 092 private static File parentDir(Collection<File> dirs, File cursor) { 093 for (File dir : dirs) { 094 if (PathUtils.canonicalPath(dir).equals(PathUtils.canonicalPath(cursor))) { 095 return dir; 096 } 097 } 098 return null; 099 } 100 101 public static final class RelativePath { 102 private File dir; 103 private String path; 104 105 public RelativePath(File dir, String path) { 106 this.dir = dir; 107 this.path = path; 108 } 109 110 public File dir() { 111 return dir; 112 } 113 114 public String path() { 115 return path; 116 } 117 } 118}