fix line separators in Ruby testdata

platform/platform-impl/src/com/intellij/ide/actions/FixLineSeparatorsAction.java

@@ -0,0 +1,71 @@
+package com.intellij.ide.actions;
+
+import com.intellij.openapi.actionSystem.AnAction;
+import com.intellij.openapi.actionSystem.AnActionEvent;
+import com.intellij.openapi.actionSystem.PlatformDataKeys;
+import com.intellij.openapi.application.ApplicationManager;
+import com.intellij.openapi.command.CommandProcessor;
+import com.intellij.openapi.editor.Document;
+import com.intellij.openapi.fileEditor.FileDocumentManager;
+import com.intellij.openapi.project.Project;
+import com.intellij.openapi.vfs.VirtualFile;
+
+/**
+ * @author yole
+ */
+public class FixLineSeparatorsAction extends AnAction {
+  @Override
+  public void actionPerformed(AnActionEvent e) {
+    Project project = e.getData(PlatformDataKeys.PROJECT);
+    final VirtualFile[] vFiles = e.getData(PlatformDataKeys.VIRTUAL_FILE_ARRAY);
+    if (project == null || vFiles == null) return;
+    CommandProcessor.getInstance().executeCommand(project, new Runnable() {
+      public void run() {
+        for (VirtualFile vFile : vFiles) {
+          fixSeparators(vFile);
+        }
+      }
+    }, "fixing line separators", null);
+  }
+
+  private static void fixSeparators(VirtualFile vFile) {
+    if (vFile.isDirectory()) {
+      for (VirtualFile child : vFile.getChildren()) {
+        fixSeparators(child);
+      }
+    }
+    else {
+      if (vFile.getFileType().isBinary()) {
+        return;
+      }
+      final Document document = FileDocumentManager.getInstance().getDocument(vFile);
+      if (areSeparatorsBroken(document)) {
+        fixSeparators(document);
+      }
+    }
+  }
+
+  private static boolean areSeparatorsBroken(Document document) {
+    final int count = document.getLineCount();
+    for (int i = 1; i < count; i += 2) {
+      if (document.getLineStartOffset(i) != document.getLineEndOffset(i)) {
+        return false;
+      }
+    }
+    return true;    
+  }
+
+  private static void fixSeparators(final Document document) {
+    ApplicationManager.getApplication().runWriteAction(new Runnable() {
+      public void run() {
+        int i = 1;
+        while(i < document.getLineCount()) {
+          final int start = document.getLineEndOffset(i);
+          final int end = document.getLineEndOffset(i) + document.getLineSeparatorLength(i);
+          document.deleteString(start, end);
+          i++;
+        }
+      }
+    });
+  }
+}

platform/platform-resources/src/idea/PlatformActions.xml

@@ -382,6 +382,7 @@
       <action internal="true" id="ReloadProjectAction" class="com.intellij.internal.ReloadProjectAction"/>
       <action internal="true" id="RestartInfo" class="com.intellij.internal.RestartInfoAction" text="Restart Info"/>
       <action internal="true" id="PruneEmptyDirectories" class="com.intellij.ide.actions.PruneEmptyDirectoriesAction" text="Prune Empty Directories"/>
+      <action internal="true" id="FixLineSeparators" class="com.intellij.ide.actions.FixLineSeparatorsAction" text="Fix Line Separators"/>
       <add-to-group group-id="ToolsMenu" anchor="last"/>
     </group>