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

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

#include "cmAuxSourceDirectoryCommand.h"

#include <algorithm>

#include <cstddef>

#include <utility>

#include <cm/string_view>

#include "cmsys/Directory.hxx"

#include "cmExecutionStatus.h"

#include "cmList.h"

#include "cmMakefile.h"

#include "cmSourceFile.h"

#include "cmStringAlgorithms.h"

#include "cmSystemTools.h"

#include "cmake.h"

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

                                 cmExecutionStatus& status)

{

  if (args.size() != 2) {

    status.SetError("called with incorrect number of arguments");

    return false;

  }

  cmMakefile& mf = status.GetMakefile();

  std::string sourceListValue;

  std::string const& templateDirectory = args[0];

  std::string tdir;

  if (!cmSystemTools::FileIsFullPath(templateDirectory)) {

    tdir = cmStrCat(mf.GetCurrentSourceDirectory(), '/', templateDirectory);

  } else {

    tdir = templateDirectory;

  }

  // was the list already populated

  sourceListValue = mf.GetSafeDefinition(args[1]);

  std::vector<std::string> files;

  // Load all the files in the directory

  cmsys::Directory dir;

  if (dir.Load(tdir)) {

    size_t numfiles = dir.GetNumberOfFiles();

    for (size_t i = 0; i < numfiles; ++i) {

      std::string file = dir.GetFile(static_cast<unsigned long>(i));

      // Split the filename into base and extension

      std::string::size_type dotpos = file.rfind('.');

      if (dotpos != std::string::npos) {

        auto ext = cm::string_view(file).substr(dotpos + 1);

        // Process only source files

        auto* cm = mf.GetCMakeInstance();

        if (dotpos > 0 && cm->IsACLikeSourceExtension(ext)) {

          std::string fullname = cmStrCat(templateDirectory, '/', file);

          // add the file as a class file so

          // depends can be done

          cmSourceFile* sf = mf.GetOrCreateSource(fullname);

          sf->SetProperty("ABSTRACT", "0");

          files.push_back(std::move(fullname));

        }

      }

    }

  }

  std::sort(files.begin(), files.end());

  if (!sourceListValue.empty()) {

    sourceListValue += ";";

  }

  sourceListValue += cmList::to_string(files);

  mf.AddDefinition(args[1], sourceListValue);

  return true;

}