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.NotNull;
  24 import org.jetbrains.annotations.Nullable;
  25
  26 import java.io.File;
  27
  28 /**
  29  * author: lesya
  30  */
  31 public class CvsRootOnFileSystem extends CvsRootProvider {
  32   private final CvsConnectionSettings mySettings;
  33   private CvsRootOnFileSystem(CvsConnectionSettings cvsRoot, File fileRoot) {
  34     super(fileRoot, cvsRoot);
  35     mySettings = cvsRoot;
  36   }
  37
  38   public static CvsRootOnFileSystem createMeOn(File file) throws CannotFindCvsRootException {
  39     File nearestRoot = getRootFor(file);
  40     if (nearestRoot == null) throw new CannotFindCvsRootException(file);
  41     CvsConnectionSettings cvsRoot = getCvsRootFor(nearestRoot);
  42     if (cvsRoot == CvsInfo.getAbsentSettings()) throw new CannotFindCvsRootException(file);
  43     File commonRoot = getCommonRoot(nearestRoot, cvsRoot);
  44     return new CvsRootOnFileSystem(getCvsEntriesManager().getCvsConnectionSettingsFor(commonRoot), commonRoot);
  45   }
  46
  47   private static CvsEntriesManager getCvsEntriesManager() {
  48     return CvsEntriesManager.getInstance();
  49   }
  50
  51
  52   public int hashCode() {
  53     return mySettings.hashCode() ^ getLocalRoot().hashCode();
  54   }
  55
  56   public boolean equals(Object obj) {
  57     if (!(obj instanceof CvsRootOnFileSystem)) return false;
  58     CvsRootOnFileSystem other = (CvsRootOnFileSystem) obj;
  59     return mySettings.equals(other.mySettings) &&
  60         getLocalRoot().equals(other.getLocalRoot());
  61   }
  62
  63   private static File getCommonRoot(File nearestRoot, CvsConnectionSettings cvsRoot) {
  64     File result = nearestRoot;
  65     if (result.getParentFile() == null) return result;
  66     while (cvsRoot.equals(getCvsRootFor(result.getParentFile()))) {
  67       if (result.getParentFile() == null) return result;
  68       result = result.getParentFile();
  69     }
  70     return result;
  71   }
  72
  73   private static CvsConnectionSettings getCvsRootFor(@NotNull File file) {
  74     return getCvsEntriesManager().getCvsConnectionSettingsFor(file);
  75   }
  76
  77   @Nullable
  78   private static File getRootFor(File file) {
  79     if (file == null) return null;
  80     if (!file.isDirectory()) return getRootFor(file.getParentFile());
  81     if (CvsUtil.fileIsUnderCvs(file)) return file;
  82     return getRootFor(file.getParentFile());
  83   }
  84
  85   public String getRepository() {
  86     return myCvsEnvironment.getRepository();
  87   }
  88
  89   public RevisionOrDate getRevisionOrDate() {
  90     return RevisionOrDate.EMPTY;
  91   }
  92 }
  93
  94