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diff --git a/Source/cmCableData.h b/Source/cmCableData.h
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+++ b/Source/cmCableData.h
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+/*=========================================================================
+
+  Program:   Insight Segmentation & Registration Toolkit
+  Module:    $RCSfile$
+  Language:  C++
+  Date:      $Date$
+  Version:   $Revision$
+
+
+  Copyright (c) 2000 National Library of Medicine
+  All rights reserved.
+
+  See COPYRIGHT.txt for copyright details.
+
+=========================================================================*/
+#ifndef cmCabilData_h
+#define cmCabilData_h
+
+#include "cmStandardIncludes.h"
+#include "cmCommand.h"
+
+class cmCabilCommand;
+
+/** \class cmCabilData
+ * \brief Hold data in one location for all cmCabilCommand subclasses.
+ */
+class cmCabilData
+{
+public:
+  /**
+   * The cmCabilData instance is owned by one cmCabilCommand, which is given
+   * to this constructor.
+   */
+  cmCabilData(const cmCabilCommand* owner): m_Owner(owner) {}
+  
+  ~cmCabilData();
+  
+  /**
+   * Returns true if the given cmCabilCommand is the owner of this
+   * cmCabilData.
+   */
+  bool OwnerIs(const cmCabilCommand* owner) const
+    { return (owner == m_Owner); }  
+  
+  /**
+   * Hold an output stream for all commands that use it.  Maintain the
+   * first and last commands that reference it so that they can write the
+   * header/footer lines, if necessary.
+   */
+  class OutputFile
+  {
+  public:
+    OutputFile(std::string, const cmCabilCommand*);
+    ~OutputFile();
+    std::ostream& GetStream();
+    void SetLastReferencingCommand(const cmCabilCommand*);
+    bool FirstReferencingCommandIs(const cmCabilCommand*) const;
+    bool LastReferencingCommandIs(const cmCabilCommand*) const;
+  private:
+    std::ofstream m_FileStream;
+    const cmCabilCommand* m_FirstReferencingCommand;
+    const cmCabilCommand* m_LastReferencingCommand;
+  };
+  
+  OutputFile* GetOutputFile(const std::string&, const cmCabilCommand*);
+  
+private:
+  typedef std::map<std::string, OutputFile*>  OutputFiles;
+  
+  /**
+   * The cmCabilCommand which created this instance of cmCabilCommand.
+   */
+  const cmCabilCommand* m_Owner;
+  
+  /**
+   * Hold all output streams by file name.
+   */
+  OutputFiles m_OutputFiles;  
+};
+
+#endif