/*============================================================================
  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 "cmSetTargetPropertiesCommand.h"

#include "cmGlobalGenerator.h"

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

  // first collect up the list of files
  std::vector<std::string> propertyPairs;
  int numFiles = 0;
  std::vector<std::string>::const_iterator j;
  for (j = args.begin(); j != args.end(); ++j) {
    if (*j == "PROPERTIES") {
      // now loop through the rest of the arguments, new style
      ++j;
      if (std::distance(j, args.end()) % 2 != 0) {
        this->SetError("called with incorrect number of arguments.");
        return false;
      }
      propertyPairs.insert(propertyPairs.end(), j, args.end());
      break;
    } else {
      numFiles++;
    }
  }
  if (propertyPairs.empty()) {
    this->SetError("called with illegal arguments, maybe missing "
                   "a PROPERTIES specifier?");
    return false;
  }

  // now loop over all the targets
  int i;
  for (i = 0; i < numFiles; ++i) {
    if (this->Makefile->IsAlias(args[i])) {
      this->SetError("can not be used on an ALIAS target.");
      return false;
    }
    bool ret = cmSetTargetPropertiesCommand::SetOneTarget(
      args[i], propertyPairs, this->Makefile);
    if (!ret) {
      std::string message = "Can not find target to add properties to: ";
      message += args[i];
      this->SetError(message);
      return false;
    }
  }
  return true;
}

bool cmSetTargetPropertiesCommand::SetOneTarget(
  const std::string& tname, std::vector<std::string>& propertyPairs,
  cmMakefile* mf)
{
  if (cmTarget* target = mf->FindTargetToUse(tname)) {
    // now loop through all the props and set them
    unsigned int k;
    for (k = 0; k < propertyPairs.size(); k = k + 2) {
      target->SetProperty(propertyPairs[k], propertyPairs[k + 1].c_str());
      target->CheckProperty(propertyPairs[k], mf);
    }
  }
  // if file is not already in the makefile, then add it
  else {
    return false;
  }
  return true;
}