/*============================================================================
  CMake - Cross Platform Makefile Generator
  Copyright 2000-2009 Kitware, Inc., Insight Software Consortium

  Distributed under the OSI-approved BSD License (the "License");
  see accompanying file Copyright.txt for details.

  This software is distributed WITHOUT ANY WARRANTY; without even the
  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  See the License for more information.
============================================================================*/
#include "cmInstallFilesCommand.h"

#include "cmInstallFilesGenerator.h"

// cmExecutableCommand
bool cmInstallFilesCommand
::InitialPass(std::vector<std::string> const& argsIn, cmExecutionStatus &)
{
  if(argsIn.size() < 2)
    {
    this->SetError("called with incorrect number of arguments");
    return false;
    }

  // Enable the install target.
  this->Makefile->GetLocalGenerator()
    ->GetGlobalGenerator()->EnableInstallTarget();

  std::vector<std::string> args;
  this->Makefile->ExpandSourceListArguments(argsIn, args, 2);

  this->Destination = args[0];

  if((args.size() > 1) && (args[1] == "FILES"))
    {
    this->IsFilesForm = true;    
    for(std::vector<std::string>::const_iterator s = args.begin()+2;
        s != args.end(); ++s)
      {
      // Find the source location for each file listed.
      std::string f = this->FindInstallSource(s->c_str());
      this->Files.push_back(f);
      }
    this->CreateInstallGenerator();
    }
  else
    {
    this->IsFilesForm = false;
    std::vector<std::string>::const_iterator s = args.begin();
    for (++s;s != args.end(); ++s)
      {
      this->FinalArgs.push_back(*s);
      }
    }
  
  this->Makefile->GetLocalGenerator()->GetGlobalGenerator()
                       ->AddInstallComponent("Unspecified");

  return true;
}

void cmInstallFilesCommand::FinalPass() 
{
  // No final pass for "FILES" form of arguments.
  if(this->IsFilesForm)
    {
    return;
    }
  
  std::string testf;
  std::string ext = this->FinalArgs[0];
  
  // two different options
  if (this->FinalArgs.size() > 1)
    {
    // now put the files into the list
    std::vector<std::string>::iterator s = this->FinalArgs.begin();
    ++s;
    // for each argument, get the files 
    for (;s != this->FinalArgs.end(); ++s)
      {
      // replace any variables
      std::string temps = *s;
      if (cmSystemTools::GetFilenamePath(temps).size() > 0)
        {
          testf = cmSystemTools::GetFilenamePath(temps) + "/" + 
            cmSystemTools::GetFilenameWithoutLastExtension(temps) + ext;
        }
      else
        {
          testf = cmSystemTools::GetFilenameWithoutLastExtension(temps) + ext;
        }
      
      // add to the result
      this->Files.push_back(this->FindInstallSource(testf.c_str()));
      }
    }
  else     // reg exp list
    {
    std::vector<std::string> files;
    std::string regex = this->FinalArgs[0].c_str();
    cmSystemTools::Glob(this->Makefile->GetCurrentDirectory(),
                        regex.c_str(), files);
    
    std::vector<std::string>::iterator s = files.begin();
    // for each argument, get the files 
    for (;s != files.end(); ++s)
      {
      this->Files.push_back(this->FindInstallSource(s->c_str()));
      }
    }

  this->CreateInstallGenerator();
}

void cmInstallFilesCommand::CreateInstallGenerator() const
{
  // Construct the destination.  This command always installs under
  // the prefix.  We skip the leading slash given by the user.
  std::string destination = this->Destination.substr(1);
  cmSystemTools::ConvertToUnixSlashes(destination);
  if(destination.empty())
    {
    destination = ".";
    }

  // Use a file install generator.
  const char* no_permissions = "";
  const char* no_rename = "";
  const char* no_component = "Unspecified";
  std::vector<std::string> no_configurations;
  this->Makefile->AddInstallGenerator(
    new cmInstallFilesGenerator(this->Files,
                                destination.c_str(), false,
                                no_permissions, no_configurations,
                                no_component, no_rename));
}


/**
 * Find a file in the build or source tree for installation given a
 * relative path from the CMakeLists.txt file.  This will favor files
 * present in the build tree.  If a full path is given, it is just
 * returned.
 */
std::string cmInstallFilesCommand::FindInstallSource(const char* name) const
{
  if(cmSystemTools::FileIsFullPath(name))
    {
    // This is a full path.
    return name;
    }
  
  // This is a relative path.
  std::string tb = this->Makefile->GetCurrentOutputDirectory();
  tb += "/";
  tb += name;
  std::string ts = this->Makefile->GetCurrentDirectory();
  ts += "/";
  ts += name;
  
  if(cmSystemTools::FileExists(tb.c_str()))
    {
    // The file exists in the binary tree.  Use it.
    return tb;
    }
  else if(cmSystemTools::FileExists(ts.c_str()))
    {
    // The file exists in the source tree.  Use it.
    return ts;
    }
  else
    {
    // The file doesn't exist.  Assume it will be present in the
    // binary tree when the install occurs.
    return tb;
    }
}