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

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

#include "cmNewLineStyle.h"

#include <cstddef>

cmNewLineStyle::cmNewLineStyle() = default;

bool cmNewLineStyle::IsValid() const

{

  return this->NewLineStyle != Invalid;

}

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

                                       std::string& errorString)

{

  this->NewLineStyle = Invalid;

  for (size_t i = 0; i < args.size(); i++) {

    if (args[i] == "NEWLINE_STYLE") {

      size_t const styleIndex = i + 1;

      if (args.size() > styleIndex) {

        std::string const& eol = args[styleIndex];

        if (eol == "LF" || eol == "UNIX") {

          this->NewLineStyle = LF;

          return true;

        }

        if (eol == "CRLF" || eol == "WIN32" || eol == "DOS") {

          this->NewLineStyle = CRLF;

          return true;

        }

        errorString = "NEWLINE_STYLE sets an unknown style, only LF, "

                      "CRLF, UNIX, DOS, and WIN32 are supported";

        return false;

      }

      errorString = "NEWLINE_STYLE must set a style: "

                    "LF, CRLF, UNIX, DOS, or WIN32";

      return false;

    }

  }

  return true;

}

std::string cmNewLineStyle::GetCharacters() const

{

  switch (this->NewLineStyle) {

    case Invalid:

      return "";

    case LF:

      return "\n";

    case CRLF:

      return "\r\n";

  }

  return "";

}

void cmNewLineStyle::SetStyle(Style style)

{

  this->NewLineStyle = style;

}

cmNewLineStyle::Style cmNewLineStyle::GetStyle() const

{

  return this->NewLineStyle;

}