ENH: Start working on a general file manipulation command

Source/cmFileCommand.h

@@ -0,0 +1,88 @@
+/*=========================================================================
+
+  Program:   CMake - Cross-Platform Makefile Generator
+  Module:    $RCSfile$
+  Language:  C++
+  Date:      $Date$
+  Version:   $Revision$
+
+  Copyright (c) 2002 Kitware, Inc., Insight Consortium.  All rights reserved.
+  See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
+
+     This software is distributed WITHOUT ANY WARRANTY; without even 
+     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
+     PURPOSE.  See the above copyright notices for more information.
+
+=========================================================================*/
+#ifndef cmFileCommand_h
+#define cmFileCommand_h
+
+#include "cmStandardIncludes.h"
+#include "cmCommand.h"
+
+/** \class cmFileCommand
+ * \brief Command for manipulation of files
+ *
+ */
+class cmFileCommand : public cmCommand
+{
+public:
+  /**
+   * This is a virtual constructor for the command.
+   */
+  virtual cmCommand* Clone() 
+    {
+    return new cmFileCommand;
+    }
+
+  /**
+   * This is called when the command is first encountered in
+   * the CMakeLists.txt file.
+   */
+  virtual bool InitialPass(std::vector<std::string> const& args);
+
+  /**
+   * This determines if the command gets propagated down
+   * to makefiles located in subdirectories.
+   */
+  virtual bool IsInherited() {return true;}
+
+  /**
+   * The name of the command as specified in CMakeList.txt.
+   */
+  virtual const char* GetName() { return "FILE";}
+
+  /**
+   * Succinct documentation.
+   */
+  virtual const char* GetTerseDocumentation() 
+    {
+    return "File manipulation command.";
+    }
+  
+  /**
+   * More documentation.
+   */
+  virtual const char* GetFullDocumentation()
+    {
+    return
+      "  FILE(WRITE filename \"message to write\"... )\n"
+      "  FILE(APPEND filename \"message to write\"... )\n"
+      "  FILE(READ filename variable)\n"
+      "WRITE will write a message into a file called 'filename'. It "
+      "overwrites the file if it already exists, and creates the file "
+      "if it does not exists.\n\n"
+      "APPEND will write a message into a file same as WRITE, except "
+      "it will append it to the end of the file\n\n"
+      "READ will read the content of a file and store it into a "
+      "variable.\n\n"; }
+  
+  cmTypeMacro(cmFileCommand, cmCommand);
+
+protected:
+  bool HandleWriteCommand(std::vector<std::string> const& args, bool append);
+  bool HandleReadCommand(std::vector<std::string> const& args);
+};
+
+
+#endif