plugins/cvs/cvs-plugin/src/com/intellij/cvsSupport2/connections/CvsRootOnFileSystem.java

   1 /*
   2  * Copyright 2000-2009 JetBrains s.r.o.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package com.intellij.cvsSupport2.connections;
  17
  18 import com.intellij.cvsSupport2.CvsUtil;
  19 import com.intellij.cvsSupport2.application.CvsEntriesManager;
  20 import com.intellij.cvsSupport2.application.CvsInfo;
  21 import com.intellij.cvsSupport2.cvsoperations.dateOrRevision.RevisionOrDate;
  22 import com.intellij.cvsSupport2.errorHandling.CannotFindCvsRootException;
  23 import org.jetbrains.annotations.Nullable;
  24
  25 import java.io.File;
  26
  27 /**
  28  * author: lesya
  29  */
  30 public class CvsRootOnFileSystem extends CvsRootProvider {
  31   private final CvsConnectionSettings mySettings;
  32   private CvsRootOnFileSystem(CvsConnectionSettings cvsRoot, File fileRoot) {
  33     super(fileRoot, cvsRoot);
  34     mySettings = cvsRoot;
  35   }
  36
  37   public static CvsRootOnFileSystem createMeOn(File file) throws CannotFindCvsRootException {
  38     File nearestRoot = getRootFor(file);
  39     if (nearestRoot == null) throw new CannotFindCvsRootException(file);
  40     CvsConnectionSettings cvsRoot = getCvsRootFor(nearestRoot);
  41     if (cvsRoot == CvsInfo.getAbsentSettings()) throw new CannotFindCvsRootException(file);
  42     File commonRoot = getCommonRoot(nearestRoot, cvsRoot);
  43     return new CvsRootOnFileSystem(getCvsEntriesManager().getCvsConnectionSettingsFor(commonRoot), commonRoot);
  44   }
  45
  46   private static CvsEntriesManager getCvsEntriesManager() {
  47     return CvsEntriesManager.getInstance();
  48   }
  49
  50
  51   public int hashCode() {
  52     return mySettings.hashCode() ^ getLocalRoot().hashCode();
  53   }
  54
  55   public boolean equals(Object obj) {
  56     if (!(obj instanceof CvsRootOnFileSystem)) return false;
  57     CvsRootOnFileSystem other = (CvsRootOnFileSystem) obj;
  58     return mySettings.equals(other.mySettings) &&
  59         getLocalRoot().equals(other.getLocalRoot());
  60   }
  61
  62   private static File getCommonRoot(File nearestRoot, CvsConnectionSettings cvsRoot) {
  63     File result = nearestRoot;
  64     while (cvsRoot.equals(getCvsRootFor(result.getParentFile()))) {
  65       if (result.getParentFile() == null) return result;
  66       result = result.getParentFile();
  67     }
  68     return result;
  69   }
  70
  71   private static CvsConnectionSettings getCvsRootFor(File file) {
  72     return getCvsEntriesManager().getCvsConnectionSettingsFor(file);
  73   }
  74
  75   @Nullable
  76   private static File getRootFor(File file) {
  77     if (file == null) return null;
  78     if (!file.isDirectory()) return getRootFor(file.getParentFile());
  79     if (CvsUtil.fileIsUnderCvs(file)) return file;
  80     return getRootFor(file.getParentFile());
  81   }
  82
  83   public String getRepository() {
  84     return myCvsEnvironment.getRepository();
  85   }
  86
  87   public RevisionOrDate getRevisionOrDate() {
  88     return RevisionOrDate.EMPTY;
  89   }
  90 }
  91
  92