ReadAndWriteCommand.cc

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// -*- C++ -*-

// ReadAndWriteCommand.cc
// 
// Copyright (C) 2002 Pascal Vincent
// 
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// 
//  1. Redistributions of source code must retain the above copyright
//     notice, this list of conditions and the following disclaimer.
// 
//  2. Redistributions in binary form must reproduce the above copyright
//     notice, this list of conditions and the following disclaimer in the
//     documentation and/or other materials provided with the distribution.
// 
//  3. The name of the authors may not be used to endorse or promote
//     products derived from this software without specific prior written
//     permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
// OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
// NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
// TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// 
// This file is part of the PLearn library. For more information on the PLearn
// library, go to the PLearn Web site at www.plearn.org

/* *******************************************************      
   * $Id: ReadAndWriteCommand.cc,v 1.6 2004/07/21 16:30:49 chrish42 Exp $ 
   ******************************************************* */

#include "ReadAndWriteCommand.h"
//#include "PStream.h"
#include <plearn/base/Object.h>
#include <plearn/base/stringutils.h>      
#include <plearn/io/fileutils.h>        

namespace PLearn {
using namespace std;

PLearnCommandRegistry ReadAndWriteCommand::reg_(new ReadAndWriteCommand);

ReadAndWriteCommand::ReadAndWriteCommand():
  PLearnCommand("read_and_write",
                
                "Used to check (debug) the serialization system",
                
                "read_and_write <sourcefile> <destfile> \n"
                "Reads an Object (in PLearn serialization format) from the <sourcefile> and writes it to the <destfile>\n"
                "If the sourcefile ends with a .psave file, then it will not be subjected to macro preprosessing \n"
                "Otherwise (ex: .plearn .vmat) it will. \n"
                )
{}

void ReadAndWriteCommand::run(const vector<string>& args)
{
  if(args.size()!=2)
    PLERROR("read_and_write takes 2 arguments");
  string source = args[0];
  string dest = args[1];

  string ext = extract_extension(source);
  PP<Object> o;

  if(ext==".psave") // may be binay. Don't macro-process
    {
      PLearn::load(source,o);
    }
  else
    {
      map<string, string> vars;
      string script = readFileAndMacroProcess(source, vars);
      PIStringStream in(script);
      o = readObject(in);
    }

  POFStream out(dest);
  if(!out)
    PLERROR("Could not open file %s for writing",dest.c_str());
  out << *o;
}

} // end of namespace PLearn

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