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/*============================================================================
  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 "cmBuildNameCommand.h"

#include <cmsys/RegularExpression.hxx>

// cmBuildNameCommand
bool cmBuildNameCommand::InitialPass(std::vector<std::string> const& args,
                                     cmExecutionStatus&)
{
  if (this->Disallowed(
        cmPolicies::CMP0036,
        "The build_name command should not be called; see CMP0036.")) {
    return true;
  }
  if (args.size() < 1) {
    this->SetError("called with incorrect number of arguments");
    return false;
  }
  const char* cacheValue = this->Makefile->GetDefinition(args[0]);
  if (cacheValue) {
    // do we need to correct the value?
    cmsys::RegularExpression reg("[()/]");
    if (reg.find(cacheValue)) {
      std::string cv = cacheValue;
      cmSystemTools::ReplaceString(cv, "/", "_");
      cmSystemTools::ReplaceString(cv, "(", "_");
      cmSystemTools::ReplaceString(cv, ")", "_");
      this->Makefile->AddCacheDefinition(args[0], cv.c_str(), "Name of build.",
                                         cmState::STRING);
    }
    return true;
  }

  std::string buildname = "WinNT";
  if (this->Makefile->GetDefinition("UNIX")) {
    buildname = "";
    cmSystemTools::RunSingleCommand("uname -a", &buildname, &buildname);
    if (!buildname.empty()) {
      std::string RegExp = "([^ ]*) [^ ]* ([^ ]*) ";
      cmsys::RegularExpression reg(RegExp.c_str());
      if (reg.find(buildname.c_str())) {
        buildname = reg.match(1) + "-" + reg.match(2);
      }
    }
  }
  std::string compiler = "${CMAKE_CXX_COMPILER}";
  this->Makefile->ExpandVariablesInString(compiler);
  buildname += "-";
  buildname += cmSystemTools::GetFilenameName(compiler);
  cmSystemTools::ReplaceString(buildname, "/", "_");
  cmSystemTools::ReplaceString(buildname, "(", "_");
  cmSystemTools::ReplaceString(buildname, ")", "_");

  this->Makefile->AddCacheDefinition(args[0], buildname.c_str(),
                                     "Name of build.", cmState::STRING);
  return true;
}