ENH: Start working on a general file manipulation command

1 files changed, 113 insertions, 0 deletions

diff --git a/Source/cmFileCommand.cxx b/Source/cmFileCommand.cxx
new file mode 100644
index 0000000..a24769f
--- /dev/null
+++ b/Source/cmFileCommand.cxx
@@ -0,0 +1,113 @@
+/*=========================================================================
+
+  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.
+
+=========================================================================*/
+#include "cmFileCommand.h"
+
+// cmLibraryCommand
+bool cmFileCommand::InitialPass(std::vector<std::string> const& args)
+{
+  if(args.size() < 2 )
+    {
+    this->SetError("must be called with at least two arguments.");
+    return false;
+    }
+  std::string subCommand = args[0];
+  if ( subCommand == "WRITE" )
+    {
+    return this->HandleWriteCommand(args, false);
+    }
+  else if ( subCommand == "APPEND" )
+    {
+    return this->HandleWriteCommand(args, true);
+    }
+  else if ( subCommand == "READ" )
+    {
+    return this->HandleReadCommand(args);
+    }
+
+  std::string e = "does not recognize sub-command "+subCommand;
+  this->SetError(e.c_str());
+  return true;
+}
+
+//----------------------------------------------------------------------------
+bool cmFileCommand::HandleWriteCommand(std::vector<std::string> const& args, 
+  bool append)
+{
+  std::string message;
+  std::vector<std::string>::const_iterator i = args.begin();
+
+  i++; // Get rid of subcommand
+
+  std::string fileName = *i;
+  i++;
+
+  for(;i != args.end(); ++i)
+    {
+    message += *i;
+    }
+  std::string dir = cmSystemTools::GetFilenamePath(fileName);
+  cmSystemTools::MakeDirectory(dir.c_str());
+
+  std::ofstream file(fileName.c_str(), append?std::ios::app: std::ios::out);
+  if ( !file )
+    {
+    std::string error = "Internal CMake error when trying to open file: ";
+    error += fileName.c_str();
+    error += " for writting.";
+    this->SetError(error.c_str());
+    return false;
+    }
+  file << message << std::endl;
+  file.close();
+  return true;
+}
+
+//----------------------------------------------------------------------------
+bool cmFileCommand::HandleReadCommand(std::vector<std::string> const& args)
+{
+  if ( args.size() != 3 )
+    {
+    this->SetError("READ must be called with two additional arguments");
+    }
+
+  std::string fileName = args[1];
+  std::string variable = args[2];
+  std::ifstream file(fileName.c_str(), std::ios::in);
+  if ( !file )
+    {
+    std::string error = "Internal CMake error when trying to open file: ";
+    error += fileName.c_str();
+    error += " for reading.";
+    this->SetError(error.c_str());
+    return false;
+    }
+
+  std::string output;
+  std::string line;
+  bool has_newline = false;
+  while ( cmSystemTools::GetLineFromStream(file, line, &has_newline) )
+    {
+    output += line;
+    if ( has_newline )
+      {
+      output += "\n";
+      }
+    }
+  m_Makefile->AddDefinition(variable.c_str(), output.c_str());
+  return true;
+}
+