/*=========================================================================

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile$
  Language:  C++
  Date:      $Date$
  Version:   $Revision$

  Copyright (c) 2002 Insight Consortium. All rights reserved.
  See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm 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 "cmGlobalVisualStudio7Generator.h"
#include "cmLocalVisualStudio7Generator.h"
#include "cmMakefile.h"
#include "cmSystemTools.h"
#include "cmSourceFile.h"
#include "cmCacheManager.h"

cmLocalVisualStudio7Generator::cmLocalVisualStudio7Generator()
{
}

cmLocalVisualStudio7Generator::~cmLocalVisualStudio7Generator()
{
}


void cmLocalVisualStudio7Generator::Generate(bool /* fromTheTop */)
{
  this->OutputVCProjFile();
}

// TODO
// for CommandLine= need to repleace quotes with &quot
// write out configurations
void cmLocalVisualStudio7Generator::OutputVCProjFile()
{ 
  // If not an in source build, then create the output directory
  if(strcmp(m_Makefile->GetStartOutputDirectory(),
            m_Makefile->GetHomeDirectory()) != 0)
    {
    if(!cmSystemTools::MakeDirectory(m_Makefile->GetStartOutputDirectory()))
      {
      cmSystemTools::Error("Error creating directory ",
                           m_Makefile->GetStartOutputDirectory());
      }
    }
  
  m_LibraryOutputPath = "";
  if (m_Makefile->GetDefinition("LIBRARY_OUTPUT_PATH"))
    {
    m_LibraryOutputPath = m_Makefile->GetDefinition("LIBRARY_OUTPUT_PATH");
    }
  if(m_LibraryOutputPath.size())
    {
    // make sure there is a trailing slash
    if(m_LibraryOutputPath[m_LibraryOutputPath.size()-1] != '/')
      {
      m_LibraryOutputPath += "/";
      }
    }
  m_ExecutableOutputPath = "";
  if (m_Makefile->GetDefinition("EXECUTABLE_OUTPUT_PATH"))
    {
    m_ExecutableOutputPath = m_Makefile->GetDefinition("EXECUTABLE_OUTPUT_PATH");
    }
  if(m_ExecutableOutputPath.size())
    {
    // make sure there is a trailing slash
    if(m_ExecutableOutputPath[m_ExecutableOutputPath.size()-1] != '/')
      {
      m_ExecutableOutputPath += "/";
      }
    }
  
  // Create the VCProj or set of VCProj's for libraries and executables

  // clear project names
  m_CreatedProjectNames.clear();

  // build any targets
  cmTargets &tgts = m_Makefile->GetTargets();
  for(cmTargets::iterator l = tgts.begin(); 
      l != tgts.end(); l++)
    {
    // INCLUDE_EXTERNAL_MSPROJECT command only affects the workspace
    // so don't build a projectfile for it
    if ((l->second.GetType() != cmTarget::INSTALL_FILES)
        && (l->second.GetType() != cmTarget::INSTALL_PROGRAMS)
        && (strncmp(l->first.c_str(), "INCLUDE_EXTERNAL_MSPROJECT", 26) != 0))
      {
      this->CreateSingleVCProj(l->first.c_str(),l->second);
      }
    }
}

void cmLocalVisualStudio7Generator::CreateSingleVCProj(const char *lname, cmTarget &target)
{
  // add to the list of projects
  std::string pname = lname;
  m_CreatedProjectNames.push_back(pname);
  // create the dsp.cmake file
  std::string fname;
  fname = m_Makefile->GetStartOutputDirectory();
  fname += "/";
  fname += lname;
  fname += ".vcproj";
  // save the name of the real dsp file
  std::string realVCProj = fname;
  fname += ".cmake";
  std::ofstream fout(fname.c_str());
  if(!fout)
    {
    cmSystemTools::Error("Error Writing ", fname.c_str());
    }
  this->WriteVCProjFile(fout,lname,target);
  fout.close();
  // if the dsp file has changed, then write it.
  cmSystemTools::CopyFileIfDifferent(fname.c_str(), realVCProj.c_str());
}


void cmLocalVisualStudio7Generator::AddVCProjBuildRule(cmSourceGroup& sourceGroup)
{
  std::string dspname = *(m_CreatedProjectNames.end()-1);
  if(dspname == "ALL_BUILD")
  {
    return;
  }
  dspname += ".vcproj.cmake";
  std::string makefileIn = m_Makefile->GetStartDirectory();
  makefileIn += "/";
  makefileIn += "CMakeLists.txt";
  makefileIn = cmSystemTools::ConvertToOutputPath(makefileIn.c_str());
  std::string dsprule = "${CMAKE_COMMAND}";
  m_Makefile->ExpandVariablesInString(dsprule);
  dsprule = cmSystemTools::ConvertToOutputPath(dsprule.c_str());
  std::string args = makefileIn;
  args += " -H";
  args +=
    cmSystemTools::ConvertToOutputPath(m_Makefile->GetHomeDirectory());
  args += " -S";
  args += 
    cmSystemTools::ConvertToOutputPath(m_Makefile->GetStartDirectory());
  args += " -O";
  args += 
    cmSystemTools::ConvertToOutputPath(m_Makefile->GetStartOutputDirectory());
  args += " -B";
  args += 
    cmSystemTools::ConvertToOutputPath(m_Makefile->GetHomeOutputDirectory());
  args += "";
  m_Makefile->ExpandVariablesInString(args);

  std::string configFile = 
    m_Makefile->GetDefinition("CMAKE_ROOT");
  configFile += "/Templates/CMakeWindowsSystemConfig.cmake";
  std::vector<std::string> listFiles = m_Makefile->GetListFiles();
  bool found = false;
  for(std::vector<std::string>::iterator i = listFiles.begin();
      i != listFiles.end(); ++i)
    {
    if(*i == configFile)
      {
      found  = true;
      }
    }
  if(!found)
    {
    listFiles.push_back(configFile);
    }
  
  std::vector<std::string> outputs;
  outputs.push_back(dspname);
  cmCustomCommand cc(makefileIn.c_str(), dsprule.c_str(),
                     args.c_str(),
		     listFiles, 
		     outputs);
  sourceGroup.AddCustomCommand(cc);
}


void cmLocalVisualStudio7Generator::WriteConfigurations(std::ostream& fout, 
                                                        const char *libName,
                                                        const cmTarget &target)
{
  std::vector<std::string> *configs = 
    static_cast<cmGlobalVisualStudio7Generator *>(m_GlobalGenerator)->GetConfigurations();
  fout << "\t<Configurations>\n";
  for( std::vector<std::string>::iterator i = configs->begin();
       i != configs->end(); ++i)
    {
    this->WriteConfiguration(fout, i->c_str(), libName, target);
    }
  fout << "\t</Configurations>\n";
}

void cmLocalVisualStudio7Generator::WriteConfiguration(std::ostream& fout, 
                                             const char* configName,
                                             const char *libName,
                                             const cmTarget &target)
{ 
  const char* mfcFlag = m_Makefile->GetDefinition("CMAKE_MFC_FLAG");
  if(!mfcFlag)
    {
    mfcFlag = "0";
    }
  fout << "\t\t<Configuration\n"
       << "\t\t\tName=\"" << configName << "|Win32\"\n"
       << "\t\t\tOutputDirectory=\"" << configName << "\"\n";
  // This is an internal type to Visual Studio, it seems that:
  // 4 == static library
  // 2 == dll
  // 1 == executable
  // 10 == utility 
  const char* configType = "10";
  switch(target.GetType())
    { 
    case cmTarget::STATIC_LIBRARY:
      configType = "4";
      break;
    case cmTarget::SHARED_LIBRARY:
    case cmTarget::MODULE_LIBRARY:
      configType = "2";
      break;
    case cmTarget::EXECUTABLE: 
    case cmTarget::WIN32_EXECUTABLE:  
      configType = "1";
      break; 
    case cmTarget::UTILITY:
      configType = "10";
    default:
      break;
    }
  
  fout << "\t\t\tIntermediateDirectory=\".\\" << configName << "\"\n"
       << "\t\t\tConfigurationType=\"" << configType << "\"\n"
       << "\t\t\tUseOfMFC=\"" << mfcFlag << "\"\n"
       << "\t\t\tATLMinimizesCRunTimeLibraryUsage=\"FALSE\"\n"
       << "\t\t\tCharacterSet=\"2\">\n";
  fout << "\t\t\t<Tool\n"
       << "\t\t\t\tName=\"VCCLCompilerTool\"\n"
       << "\t\t\t\tAdditionalOptions=\""
       << m_Makefile->GetDefinition("CMAKE_CXX_FLAGS") 
       << " -DCMAKE_INTDIR=\\&quot;" << configName << "\\&quot;" 
       << "\"\n";

  fout << "\t\t\t\tAdditionalIncludeDirectories=\"";
  std::vector<std::string>& includes = m_Makefile->GetIncludeDirectories();
  std::vector<std::string>::iterator i = includes.begin();
  for(;i != includes.end(); ++i)
    {
    std::string ipath = this->ConvertToXMLOutputPath(i->c_str());
    fout << ipath << ";";
    }
  fout << "\"\n";
  
// Optimization = 0  None Debug  /O0
// Optimization = 1  MinSize     /O1
// Optimization = 2  MaxSpeed    /O2
// Optimization = 3  Max Optimization   /O3
// RuntimeLibrary = 0 /MT   multithread
// RuntimeLibrary = 1 /MTd  multithread debug
// RuntimeLibrary = 2 /MD   multithread dll
// RuntimeLibrary = 3 /MDd  multithread dll debug
// RuntimeLibrary = 4 /ML   single thread
// RuntimeLibrary = 5 /MLd  single thread debug
// InlineFunctionExpansion = 0 none
// InlineFunctionExpansion = 1 when inline keyword
// InlineFunctionExpansion = 2 any time you can


  if(strcmp(configName, "Debug") == 0)
    {
    fout << "\t\t\t\tOptimization=\"0\"\n"
         << "\t\t\t\tRuntimeLibrary=\"3\"\n"
         << "\t\t\t\tInlineFunctionExpansion=\"0\"\n"
         << "\t\t\t\tPreprocessorDefinitions=\"WIN32,_DEBUG,_WINDOWS";
    }
  else if(strcmp(configName, "Release") == 0)
    {
    fout << "\t\t\t\tOptimization=\"2\"\n"
         << "\t\t\t\tRuntimeLibrary=\"2\"\n"
         << "\t\t\t\tInlineFunctionExpansion=\"1\"\n"
         << "\t\t\t\tPreprocessorDefinitions=\"WIN32,NDEBUG,_WINDOWS";
    }
  else if(strcmp(configName, "MinSizeRel") == 0)
    {
    fout << "\t\t\t\tOptimization=\"1\"\n"
         << "\t\t\t\tRuntimeLibrary=\"2\"\n"
         << "\t\t\t\tInlineFunctionExpansion=\"1\"\n"
         << "\t\t\t\tPreprocessorDefinitions=\"WIN32,NDEBUG,_WINDOWS";
    }
  else if(strcmp(configName, "RelWithDebInfo") == 0)
    {
    fout << "\t\t\t\tOptimization=\"2\"\n"
         << "\t\t\t\tRuntimeLibrary=\"2\"\n"
         << "\t\t\t\tInlineFunctionExpansion=\"1\"\n"
         << "\t\t\t\tPreprocessorDefinitions=\"WIN32,NDEBUG,_WINDOWS";
    }
  if(target.GetType() == cmTarget::SHARED_LIBRARY
     || target.GetType() == cmTarget::MODULE_LIBRARY)
    {
    fout << "," << libName << "_EXPORTS";
    }
  this->OutputDefineFlags(fout);
  fout << "\"\n";
  if(m_Makefile->IsOn("CMAKE_CXX_USE_RTTI"))
    {
    fout << "\t\t\t\tRuntimeTypeInfo=\"TRUE\"\n";
    }
  fout << "\t\t\t\tAssemblerListingLocation=\"" << configName << "\"\n";
  fout << "\t\t\t\tObjectFile=\"" << configName << "\\\"\n";
  fout << "\t\t\t\tWarningLevel=\"" << m_Makefile->GetDefinition("CMAKE_CXX_WARNING_LEVEL") << "\"\n";
  fout << "\t\t\t\tDetect64BitPortabilityProblems=\"TRUE\"\n"
       << "\t\t\t\tDebugInformationFormat=\"3\"";
  fout << "/>\n";  // end of <Tool Name=VCCLCompilerTool

  fout << "\t\t\t<Tool\n\t\t\t\tName=\"VCCustomBuildTool\"/>\n";
  fout << "\t\t\t<Tool\n\t\t\t\tName=\"VCResourceCompilerTool\"\n"
       << "AdditionalIncludeDirectories=\"";
  for(i = includes.begin();i != includes.end(); ++i)
    {
    std::string ipath = this->ConvertToXMLOutputPath(i->c_str());
    fout << ipath << ";";
    }
  fout << "\"\n/>\n";
  fout << "\t\t\t<Tool\n\t\t\t\tName=\"VCMIDLTool\"/>\n";
  fout << "\t\t\t<Tool\n\t\t\t\tName=\"VCPostBuildEventTool\"";
  this->OutputTargetRules(fout, target, libName);
  fout << "/>\n";
  fout << "\t\t\t<Tool\n\t\t\t\tName=\"VCPreBuildEventTool\"/>\n";
  this->OutputBuildTool(fout, configName, libName, target);
  fout << "\t\t</Configuration>\n";
}

void cmLocalVisualStudio7Generator::OutputBuildTool(std::ostream& fout,
                                          const char* configName,
                                          const char *libName,
                                          const cmTarget &target)
{ 
  std::string temp;
  switch(target.GetType())
    {
    case cmTarget::STATIC_LIBRARY:
    {
      std::string libpath = m_LibraryOutputPath + 
        "$(OutDir)/" + libName + ".lib";
      fout << "\t\t\t<Tool\n"
           << "\t\t\t\tName=\"VCLibrarianTool\"\n"
           << "\t\t\t\t\tOutputFile=\"" 
           << this->ConvertToXMLOutputPathSingle(libpath.c_str()) << ".\"/>\n";
      break;
    }
    case cmTarget::SHARED_LIBRARY:
    case cmTarget::MODULE_LIBRARY:
      fout << "\t\t\t<Tool\n"
           << "\t\t\t\tName=\"VCLinkerTool\"\n"
           << "\t\t\t\tAdditionalOptions=\"/MACHINE:I386\"\n"
           << "\t\t\t\tAdditionalDependencies=\" odbc32.lib odbccp32.lib ";
      this->OutputLibraries(fout, configName, libName, target);
      fout << "\"\n";
      temp = m_LibraryOutputPath;
      temp += configName;
      temp += "/";
      temp += libName;
      temp += ".dll";
      fout << "\t\t\t\tOutputFile=\"" 
           << this->ConvertToXMLOutputPathSingle(temp.c_str()) << "\"\n";
      fout << "\t\t\t\tLinkIncremental=\"1\"\n";
      fout << "\t\t\t\tSuppressStartupBanner=\"TRUE\"\n";
      fout << "\t\t\t\tAdditionalLibraryDirectories=\"";
      this->OutputLibraryDirectories(fout, configName, libName, target);
      fout << "\"\n";
      this->OutputModuleDefinitionFile(fout, target);
      temp = m_LibraryOutputPath;
      temp += "$(OutDir)";
      temp += "/";
      temp += libName;
      temp += ".pdb";
      fout << "\t\t\t\tProgramDatabaseFile=\"" << 
        this->ConvertToXMLOutputPathSingle(temp.c_str()) << "\"\n";
      if(strcmp(configName, "Debug") == 0
         || strcmp(configName, "RelWithDebInfo") == 0)
        {
        fout << "\t\t\t\tGenerateDebugInformation=\"TRUE\"\n";
        }
      fout << "\t\t\t\tStackReserveSize=\"" 
           << m_Makefile->GetDefinition("CMAKE_CXX_STACK_SIZE") << "\"\n";
      temp = m_ExecutableOutputPath;
      temp += configName;
      temp += "/";
      temp += libName;
      temp += ".lib";
      fout << "\t\t\t\tImportLibrary=\"" << this->ConvertToXMLOutputPathSingle(temp.c_str()) << "\"/>\n";
      break;
    case cmTarget::EXECUTABLE:
    case cmTarget::WIN32_EXECUTABLE:

      fout << "\t\t\t<Tool\n"
           << "\t\t\t\tName=\"VCLinkerTool\"\n"
           << "\t\t\t\tAdditionalOptions=\"/MACHINE:I386\"\n"
           << "\t\t\t\tAdditionalDependencies=\" odbc32.lib odbccp32.lib ";
      this->OutputLibraries(fout, configName, libName, target);
      fout << "\"\n";
      temp = m_ExecutableOutputPath;
      temp += configName;
      temp += "/";
      temp += libName;
      temp += ".exe";
      fout << "\t\t\t\tOutputFile=\"" << this->ConvertToXMLOutputPathSingle(temp.c_str()) << "\"\n";
      fout << "\t\t\t\tLinkIncremental=\"1\"\n";
      fout << "\t\t\t\tSuppressStartupBanner=\"TRUE\"\n";
      fout << "\t\t\t\tAdditionalLibraryDirectories=\"";
      this->OutputLibraryDirectories(fout, configName, libName, target);
      fout << "\"\n";
      fout << "\t\t\t\tProgramDatabaseFile=\"" << m_LibraryOutputPath 
           << "$(OutDir)\\" << libName << ".pdb\"\n";
      if(strcmp(configName, "Debug") == 0 
         || strcmp(configName, "RelWithDebInfo") == 0)
        {
        fout << "\t\t\t\tGenerateDebugInformation=\"TRUE\"\n";
        }
      if( target.GetType() == cmTarget::EXECUTABLE)
        {
        fout << "\t\t\t\tSubSystem=\"1\"\n";
        }
      else
        {      
        fout << "\t\t\t\tSubSystem=\"2\"\n";
        }
      fout << "\t\t\t\tStackReserveSize=\"" 
           << m_Makefile->GetDefinition("CMAKE_CXX_STACK_SIZE") << "\"/>\n";
      break;
    case cmTarget::UTILITY:
      break;
    }
}

void cmLocalVisualStudio7Generator::OutputModuleDefinitionFile(std::ostream& fout,
                                                     const cmTarget &target)
{
  std::vector<cmSourceFile*> const& classes = target.GetSourceFiles();
  for(std::vector<cmSourceFile*>::const_iterator i = classes.begin(); 
      i != classes.end(); i++)
    {  
    if(cmSystemTools::UpperCase((*i)->GetSourceExtension()) == "DEF")
      {
      fout << "\t\t\t\tModuleDefinitionFile=\""
           << this->ConvertToXMLOutputPath((*i)->GetFullPath().c_str())
           << "\"\n";
      return;
      }
    }
  
}

void cmLocalVisualStudio7Generator::OutputLibraryDirectories(std::ostream& fout,
                                                   const char*,
                                                   const char*,
                                                   const cmTarget &tgt)
{ 
  bool hasone = false;
  if(m_LibraryOutputPath.size())
    {
    hasone = true;
    std::string temp = m_LibraryOutputPath;
    temp += "$(INTDIR)";
    
    fout << this->ConvertToXMLOutputPath(temp.c_str()) << "," << 
      this->ConvertToXMLOutputPath(m_LibraryOutputPath.c_str());
    }
  if(m_ExecutableOutputPath.size())
    {
    hasone = true;
    std::string temp = m_ExecutableOutputPath;
    temp += "$(INTDIR)"; 
    fout << this->ConvertToXMLOutputPath(temp.c_str()) << "," << 
      this->ConvertToXMLOutputPath(m_ExecutableOutputPath.c_str());
    }
    
  std::set<std::string> pathEmitted;
  std::vector<std::string>::const_iterator i;
  const std::vector<std::string>& libdirs = tgt.GetLinkDirectories();
  for(i = libdirs.begin(); i != libdirs.end(); ++i)
    {
    std::string lpath = *i;
    if(lpath[lpath.size()-1] != '/')
      {
      lpath += "/";
      }
    if(pathEmitted.insert(lpath).second)
      {
      if(hasone)
        {
        fout << ",";
        }
      std::string lpathi = lpath + "$(INTDIR)";
	  fout << this->ConvertToXMLOutputPath(lpathi.c_str()) << "," << lpath;
      hasone = true;
      }
    }
}

void cmLocalVisualStudio7Generator::OutputLibraries(std::ostream& fout,
                                          const char* configName,
                                          const char* libName,
                                          const cmTarget &target)
{
  const cmTarget::LinkLibraries& libs = target.GetLinkLibraries();
  cmTarget::LinkLibraries::const_iterator j;
  for(j = libs.begin(); j != libs.end(); ++j)
    { 
    if(j->first != libName)
      {
      std::string lib = j->first;
      if(j->first.find(".lib") == std::string::npos)
        {
        lib += ".lib";
        }
      lib = this->ConvertToXMLOutputPath(lib.c_str());
      if (j->second == cmTarget::GENERAL
          || (j->second == cmTarget::DEBUG && strcmp(configName, "DEBUG") == 0)
          || (j->second == cmTarget::OPTIMIZED && strcmp(configName, "DEBUG") != 0))
        {
        fout << lib << " ";
        }
      }
    }
}

void cmLocalVisualStudio7Generator::OutputDefineFlags(std::ostream& fout)
{
  std::string defs = m_Makefile->GetDefineFlags();
  std::string::size_type pos = defs.find("-D");
  bool done = pos == std::string::npos;
  if(!done)
    {
    fout << ",";
    }
  while(!done)
    {
    std::string::size_type nextpos = defs.find("-D", pos+2);
    std::string define;
    if(nextpos != std::string::npos)
      {
      define = defs.substr(pos+2, nextpos - pos -3);
      }
    else
      {
      define = defs.substr(pos+2);
      done = true;
      }
    cmSystemTools::ReplaceString(define, "\"", "");
    fout << define << ",";
    if(!done)
      {
      pos = defs.find("-D", nextpos);
      }
    } 
}

void cmLocalVisualStudio7Generator::WriteVCProjFile(std::ostream& fout, 
                                 const char *libName,
                                 cmTarget &target)
{
  // get the configurations
  std::vector<std::string> *configs = 
    static_cast<cmGlobalVisualStudio7Generator *>(m_GlobalGenerator)->GetConfigurations();
  
  // We may be modifying the source groups temporarily, so make a copy.
  std::vector<cmSourceGroup> sourceGroups = m_Makefile->GetSourceGroups();
  
  // get the classes from the source lists then add them to the groups
  std::vector<cmSourceFile*> const& classes = target.GetSourceFiles();
  for(std::vector<cmSourceFile*>::const_iterator i = classes.begin(); 
      i != classes.end(); i++)
    {
    // Add the file to the list of sources.
    std::string source = (*i)->GetFullPath();
    if(cmSystemTools::UpperCase((*i)->GetSourceExtension()) == "DEF")
      {
      m_ModuleDefinitionFile = (*i)->GetFullPath();
      }
    
    cmSourceGroup& sourceGroup = m_Makefile->FindSourceGroup(source.c_str(),
                                                             sourceGroups);
    sourceGroup.AddSource(source.c_str(), *i);
    }
  
  // add any custom rules to the source groups
  for (std::vector<cmCustomCommand>::const_iterator cr = 
         target.GetCustomCommands().begin(); 
       cr != target.GetCustomCommands().end(); ++cr)
    {
    cmSourceGroup& sourceGroup = 
      m_Makefile->FindSourceGroup(cr->GetSourceName().c_str(),
                                  sourceGroups);
    cmCustomCommand cc(*cr);
    cc.ExpandVariables(*m_Makefile);
    sourceGroup.AddCustomCommand(cc);
    }
  
  // open the project
  this->WriteProjectStart(fout, libName, target, sourceGroups);
  // write the configuration information
  this->WriteConfigurations(fout, libName, target);

  fout << "\t<Files>\n";
  // Find the group in which the CMakeLists.txt source belongs, and add
  // the rule to generate this VCProj file.
  for(std::vector<cmSourceGroup>::reverse_iterator sg = sourceGroups.rbegin();
      sg != sourceGroups.rend(); ++sg)
    {
    if(sg->Matches("CMakeLists.txt"))
      {
      this->AddVCProjBuildRule(*sg);
      break;
      }    
    }
  

  // Loop through every source group.
  for(std::vector<cmSourceGroup>::const_iterator sg = sourceGroups.begin();
      sg != sourceGroups.end(); ++sg)
    {
    const cmSourceGroup::BuildRules& buildRules = sg->GetBuildRules();
    // If the group is empty, don't write it at all.
    if(buildRules.empty())
      { continue; }
    
    // If the group has a name, write the header.
    std::string name = sg->GetName();
    if(name != "")
      {
      this->WriteVCProjBeginGroup(fout, name.c_str(), "");
      }
    
    // Loop through each build rule in the source group.
    for(cmSourceGroup::BuildRules::const_iterator cc =
          buildRules.begin(); cc != buildRules.end(); ++ cc)
      {
      std::string source = cc->first;
      const cmSourceGroup::Commands& commands = cc->second.m_Commands;
      const char* compileFlags = 0;
      if(cc->second.m_SourceFile)
        {
        compileFlags = cc->second.m_SourceFile->GetProperty("COMPILE_FLAGS");
        }
      if (source != libName || target.GetType() == cmTarget::UTILITY)
        {
        fout << "\t\t\t<File\n";
        std::string d = cmSystemTools::ConvertToOutputPath(source.c_str());
        // remove double quotes from the string
        cmSystemTools::ReplaceString(d, "\"", "");
        // Tell MS-Dev what the source is.  If the compiler knows how to
        // build it, then it will.
        fout << "\t\t\t\tRelativePath=\"" << d << "\">\n";
        if (!commands.empty())
          {
          cmSourceGroup::CommandFiles totalCommand;
          std::string totalCommandStr;
          totalCommandStr = this->CombineCommands(commands, totalCommand,
                                                  source.c_str());
          this->WriteCustomRule(fout, source.c_str(), totalCommandStr.c_str(), 
                                totalCommand.m_Depends, 
                                totalCommand.m_Outputs, compileFlags);
          }
        else if(compileFlags)
          {
          for(std::vector<std::string>::iterator i = configs->begin(); 
              i != configs->end(); ++i)
            {
            fout << "\t\t\t\t<FileConfiguration\n"
                 << "\t\t\t\t\tName=\""  << *i << "|Win32\">\n"
                 << "\t\t\t\t\t<Tool\n"
                 << "\t\t\t\t\tName=\"VCCLCompilerTool\"\n"
                 << "\t\t\t\t\tAdditionalOptions=\""
                 << compileFlags << "\"/>\n"
                 << "\t\t\t\t</FileConfiguration>\n";
            }
          }
        fout << "\t\t\t</File>\n";
        }
      }
    
    // If the group has a name, write the footer.
    if(name != "")
      {
      this->WriteVCProjEndGroup(fout);
      }
    }  
  fout << "\t</Files>\n";

  // Write the VCProj file's footer.
  this->WriteVCProjFooter(fout);
}


void cmLocalVisualStudio7Generator::WriteCustomRule(std::ostream& fout,
                                          const char* source,
                                          const char* command,
                                          const std::set<std::string>& depends,
                                          const std::set<std::string>& outputs,
                                          const char* compileFlags)
{
  std::string cmd = command;
  cmSystemTools::ReplaceString(cmd, "\"", "&quot;");
  std::vector<std::string>::iterator i;
  std::vector<std::string> *configs = 
    static_cast<cmGlobalVisualStudio7Generator *>(m_GlobalGenerator)->GetConfigurations();
  for(i = configs->begin(); i != configs->end(); ++i)
    {
    fout << "\t\t\t\t<FileConfiguration\n";
    fout << "\t\t\t\t\tName=\"" << *i << "|Win32\">\n";
    if(compileFlags)
      {
      fout << "\t\t\t\t\t<Tool\n"
           << "\t\t\t\t\tName=\"VCCLCompilerTool\"\n"
           << "\t\t\t\t\tAdditionalOptions=\""
           << compileFlags << "\"/>\n";
      }
    fout << "\t\t\t\t\t<Tool\n"
         << "\t\t\t\t\tName=\"VCCustomBuildTool\"\n"
         << "\t\t\t\t\tCommandLine=\"" << cmd << "\n\"\n"
         << "\t\t\t\t\tAdditionalDependencies=\"";
    // Write out the dependencies for the rule.
    std::string temp;
    for(std::set<std::string>::const_iterator d = depends.begin();
	d != depends.end(); ++d)
      {
      fout << this->ConvertToXMLOutputPath(d->c_str())
           << ";";
      }
    fout << "\"\n";
    fout << "\t\t\t\t\tOutputs=\"";
    if(outputs.size() == 0)
      {
      fout << source << "_force";
      }
    
    bool first = true;
    // Write a rule for every output generated by this command.
    for(std::set<std::string>::const_iterator output = outputs.begin();
        output != outputs.end(); ++output)
      {
      if(!first)
        {
        fout << ";";
        }
      else
        {
        first = false;
        }
      fout << output->c_str();
      }
    fout << "\"/>\n";
    fout << "\t\t\t\t</FileConfiguration>\n";
    }
}


void cmLocalVisualStudio7Generator::WriteVCProjBeginGroup(std::ostream& fout, 
					const char* group,
					const char* )
{
  fout << "\t\t<Filter\n"
       << "\t\t\tName=\"" << group << "\"\n"
       << "\t\t\tFilter=\"\">\n";
}


void cmLocalVisualStudio7Generator::WriteVCProjEndGroup(std::ostream& fout)
{
  fout << "\t\t</Filter>\n";
}





std::string
cmLocalVisualStudio7Generator::CombineCommands(const cmSourceGroup::Commands &commands,
                                cmSourceGroup::CommandFiles &totalCommand,
                                const char *source)
  
{
  // Loop through every custom command generating code from the
  // current source.
  // build up the depends and outputs and commands 
  std::string totalCommandStr = "";
  std::string temp;
  for(cmSourceGroup::Commands::const_iterator c = commands.begin();
      c != commands.end(); ++c)
    {
    temp= 
      cmSystemTools::ConvertToOutputPath(c->second.m_Command.c_str()); 
    totalCommandStr += temp;
    totalCommandStr += " ";
    totalCommandStr += c->second.m_Arguments;
    totalCommandStr += "\n";
    totalCommand.Merge(c->second);
    }      
  // Create a dummy file with the name of the source if it does
  // not exist
  if(totalCommand.m_Outputs.empty())
    { 
    std::string dummyFile = m_Makefile->GetStartOutputDirectory();
    dummyFile += "/";
    dummyFile += source;
    if(!cmSystemTools::FileExists(dummyFile.c_str()))
      {
      std::ofstream fout(dummyFile.c_str());
      fout << "Dummy file created by cmake as unused source for utility command.\n";
      }
    }
  return totalCommandStr;
}


// look for custom rules on a target and collect them together

void cmLocalVisualStudio7Generator::OutputTargetRules(std::ostream& fout,
                                            const cmTarget &target, 
                                            const char *libName)
{
  if (target.GetType() >= cmTarget::UTILITY)
    {
    return;
    }
  
  // Find the group in which the lix exe custom rules belong
  bool init = false;
  for (std::vector<cmCustomCommand>::const_iterator cr = 
         target.GetCustomCommands().begin(); 
       cr != target.GetCustomCommands().end(); ++cr)
    {
    cmCustomCommand cc(*cr);
    cc.ExpandVariables(*m_Makefile);
    if (cc.GetSourceName() == libName)
      {
      if(!init)
        {
        fout << "\nCommandLine=\"";
        init = true;
        }
      std::string args = cc.GetArguments();
      cmSystemTools::ReplaceString(args, "\"", "&quot;");
      fout << this->ConvertToXMLOutputPath(cc.GetCommand().c_str()) << " " << args << "\n";
      }
    }
  if (init)
    {
    fout << "\"";
    }
}

void 
cmLocalVisualStudio7Generator::WriteProjectStart(std::ostream& fout, 
                                                 const char *libName,
                                                 const cmTarget &, 
                                                 std::vector<cmSourceGroup> &)
{
  fout << "<?xml version=\"1.0\" encoding = \"Windows-1252\"?>\n"
       << "<VisualStudioProject\n"
       << "\tProjectType=\"Visual C++\"\n"
       << "\tVersion=\"7.00\"\n"
       << "\tName=\"" << libName << "\"\n"
       << "\tSccProjectName=\"\"\n"
       << "\tSccLocalPath=\"\"\n"
       << "\tKeyword=\"Win32Proj\">\n"
       << "\t<Platforms>\n"
       << "\t\t<Platform\n\t\t\tName=\"Win32\"/>\n"
       << "\t</Platforms>\n";
}


void cmLocalVisualStudio7Generator::WriteVCProjFooter(std::ostream& fout)
{
  fout << "\t<Globals>\n"
       << "\t</Globals>\n"
       << "</VisualStudioProject>\n";
}


std::string cmLocalVisualStudio7Generator::ConvertToXMLOutputPath(const char* path)
{
  std::string ret = cmSystemTools::ConvertToOutputPath(path);
  cmSystemTools::ReplaceString(ret, "\"", "&quot;");
  return ret;
}

std::string cmLocalVisualStudio7Generator::ConvertToXMLOutputPathSingle(const char* path)
{
  std::string ret = cmSystemTools::ConvertToOutputPath(path);
  cmSystemTools::ReplaceString(ret, "\"", "");
  return ret;
}


