/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying

   file LICENSE.rst or https://cmake.org/licensing for details.  */

#include "cmLinkDirectoriesCommand.h"

#include <utility>

#include "cmDiagnostics.h"

#include "cmExecutionStatus.h"

#include "cmGeneratorExpression.h"

#include "cmList.h"

#include "cmMakefile.h"

#include "cmStringAlgorithms.h"

#include "cmSystemTools.h"

static void AddLinkDir(cmMakefile& mf, std::string const& dir,

                       std::vector<std::string>& directories);

bool cmLinkDirectoriesCommand(std::vector<std::string> const& args,

                              cmExecutionStatus& status)

{

  cmMakefile& mf = status.GetMakefile();

  mf.IssueDiagnostic(cmDiagnostics::CMD_NON_TARGET_DIRECTIVE,

                     "Use of non-target directives is not recommended. "

                     "Consider target_link_directories instead.");

  if (args.empty()) {

    return true;

  }

  bool before = mf.IsOn("CMAKE_LINK_DIRECTORIES_BEFORE");

  auto i = args.cbegin();

  if ((*i) == "BEFORE") {

    before = true;

    ++i;

  } else if ((*i) == "AFTER") {

    before = false;

    ++i;

  }

  std::vector<std::string> directories;

  for (; i != args.cend(); ++i) {

    AddLinkDir(mf, *i, directories);

  }

  mf.AddLinkDirectory(cmList::to_string(directories), before);

  return true;

}

static void AddLinkDir(cmMakefile& mf, std::string const& dir,

                       std::vector<std::string>& directories)

{

  std::string unixPath = dir;

  cmSystemTools::ConvertToUnixSlashes(unixPath);

  if (!cmSystemTools::FileIsFullPath(unixPath) &&

      !cmGeneratorExpression::StartsWithGeneratorExpression(unixPath)) {

    unixPath =

      cmStrCat(mf.GetCurrentSourceDirectory(), '/', std::move(unixPath));

  }

  directories.push_back(unixPath);

}