From dabd7431a35850f9d9bcbbcae6a38881192bfeff Mon Sep 17 00:00:00 2001
From: irengrig <Irina.Chernushina@jetbrains.com>
Date: Thu, 6 Oct 2011 18:16:00 +0400
Subject: [PATCH] apply patch fix

---
 .../impl/patch/BaseRevisionTextPatchEP.java   | 106 ++++++++++++++++++
 1 file changed, 106 insertions(+)
 create mode 100644 platform/vcs-api/src/com/intellij/openapi/diff/impl/patch/BaseRevisionTextPatchEP.java

diff --git a/platform/vcs-api/src/com/intellij/openapi/diff/impl/patch/BaseRevisionTextPatchEP.java b/platform/vcs-api/src/com/intellij/openapi/diff/impl/patch/BaseRevisionTextPatchEP.java
new file mode 100644
index 000000000000..02fe1ee4089a
--- /dev/null
+++ b/platform/vcs-api/src/com/intellij/openapi/diff/impl/patch/BaseRevisionTextPatchEP.java
@@ -0,0 +1,106 @@
+/*
+ * Copyright 2000-2011 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.intellij.openapi.diff.impl.patch;
+
+import com.intellij.openapi.diagnostic.Logger;
+import com.intellij.openapi.project.Project;
+import com.intellij.openapi.util.Key;
+import com.intellij.openapi.vcs.FilePath;
+import com.intellij.openapi.vcs.VcsException;
+import com.intellij.openapi.vcs.actions.VcsContextFactory;
+import com.intellij.openapi.vcs.changes.Change;
+import com.intellij.openapi.vcs.changes.ChangeListManager;
+import com.intellij.openapi.vcs.changes.CommitContext;
+import org.jetbrains.annotations.NotNull;
+
+import java.io.File;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Created by IntelliJ IDEA.
+ * User: Irina.Chernushina
+ * Date: 9/15/11
+ * Time: 1:20 PM
+ */
+public class BaseRevisionTextPatchEP implements PatchEP {
+  public final static Key<Boolean> ourPutBaseRevisionTextKey = Key.create("com.intellij.openapi.diff.impl.patch.BaseRevisionTextPatchEP.ourPutBaseRevisionTextKey");
+  public static final Key<List<FilePath>> ourBaseRevisionPaths = Key.create("com.intellij.openapi.diff.impl.patch.BaseRevisionTextPatchEP.ourBaseRevisionPaths");
+  public static final Key<Map<String, String>> ourStoredTexts = Key.create("com.intellij.openapi.diff.impl.patch.BaseRevisionTextPatchEP.ourStoredTexts");
+  private final static Logger LOG = Logger.getInstance("#com.intellij.openapi.diff.impl.patch.BaseRevisionTextPatchEP");
+
+  private final Project myProject;
+  private final ChangeListManager myChangeListManager;
+  private final String myBaseDir;
+
+  public BaseRevisionTextPatchEP(final Project project) {
+    myProject = project;
+    myBaseDir = myProject.getBaseDir().getPath();
+    myChangeListManager = ChangeListManager.getInstance(myProject);
+  }
+
+  @NotNull
+  @Override
+  public String getName() {
+    return "com.intellij.openapi.diff.impl.patch.BaseRevisionTextPatchEP";
+  }
+
+  @Override
+  public CharSequence provideContent(@NotNull String path, CommitContext commitContext) {
+    if (commitContext == null) return null;
+    if (Boolean.TRUE.equals(commitContext.getUserData(ourPutBaseRevisionTextKey))) {
+      final File file = new File(myBaseDir, path);
+      FilePath filePathOn = VcsContextFactory.SERVICE.getInstance().createFilePathOn(file);
+      final Change change = myChangeListManager.getChange(filePathOn);
+      List<FilePath> paths = commitContext.getUserData(ourBaseRevisionPaths);
+      if (change == null || change.getBeforeRevision() == null || paths == null || ! paths.contains(filePathOn)) return null;
+
+      try {
+        final String content = change.getBeforeRevision().getContent();
+        return content;
+      }
+      catch (VcsException e) {
+        LOG.info(e);
+      }
+    } else {
+      final Map<String, String> map = commitContext.getUserData(ourStoredTexts);
+      if (map != null) {
+        final File file = new File(myBaseDir, path);
+        return map.get(file.getPath());
+      }
+    }
+    return null;
+  }
+
+  @Override
+  public void consumeContent(@NotNull String path, @NotNull CharSequence content, CommitContext commitContext) {
+  }
+
+  @Override
+  public void consumeContentBeforePatchApplied(@NotNull String path,
+                                               @NotNull CharSequence content,
+                                               CommitContext commitContext) {
+    if (commitContext == null) return;
+    Map<String, String> map = commitContext.getUserData(ourStoredTexts);
+    if (map == null) {
+      map = new HashMap<String, String>();
+      commitContext.putUserData(ourStoredTexts, map);
+    }
+    final File file = new File(myBaseDir, path);
+    map.put(file.getPath(), content.toString());
+  }
+}