speaker-setup-format-converter/ease_parser.cpp at main · sat-mtl/speaker-setup-format-converter · GitHub

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#pragma once

#include "ease_parser.hpp"

#include "ease_model.hpp"

#include <boost/regex.hpp>
#include <boost/spirit/home/x3.hpp>
#include <boost/spirit/home/x3/core/parse.hpp>
#include <format>

namespace x3 = boost::spirit::x3;

//////////////////////////////
// Parser
//////////////////////////////
// clang-format off

namespace spatparse::ease
{
x3::rule<class file_header_parser, file_header_t> const file_header_parser
    = "file_header_parser";

const auto text_character = ((x3::print - '\"') | x3::char_(' '));
const auto file_header_parser_def
    = "\"FileType\",\"" >> +text_character >> '"'
      >> "\"Format\"," >> x3::double_
      >> "\"LengthUnit\",\"" >> +text_character >> '"';

x3::rule<class loudspeaker_parser, loudspeaker_t> const loudspeaker_parser
    = "loudspeaker_parser";

const auto loudspeaker_parser_def
    = "\"Label\",\"" >> *text_character >> x3::lit("\"")
      >> "\"Position\"," >> x3::double_ >> ',' >> x3::double_ >> ',' >> x3::double_
      >> "\"Ver/Hor/Rot\"," >> x3::double_ >> ',' >> x3::double_ >> ',' >> x3::double_
      >> "\"Speaker\",\"" >> *text_character >> x3::lit("\"")
      >> "\"Delay/Align\"," >> x3::int_ >> ',' >> x3::int_
      >> "\"dB 1m\"," >> *(x3::int_ % ',')
      >> "\"Watts\"," >> x3::int_
      >> "\"Phase\"," >> x3::int_;

BOOST_SPIRIT_DEFINE(file_header_parser, loudspeaker_parser);
// clang-format on

std::optional<file> parse(std::string_view input)
{
  file res;

  std::string cleaned{input};

  // Remove the comments
  const boost::regex rx(";([[:print:]]| )*\n");
  cleaned = boost::regex_replace(cleaned, rx, "");

  auto begin = cleaned.begin();
  auto end = cleaned.end();
  bool success = boost::spirit::x3::phrase_parse(
      begin, end, file_header_parser >> *loudspeaker_parser, x3::ascii::space, res);
  if(!success)
  {
    return std::nullopt;
  }
  return res;
}

std::string to_string(const spatparse::ease::file& f)
{
  std::string ease_string;
  ease_string.reserve(f.loudspeakers.size() * 256);

  ease_string += std::format(
      "; EASE Focus 3 - Generated by spatparse\n"
      "; (c) Société des Arts Technologiques\n"
      ";\n"
      ";==============================================================\n"
      "\"FileType\",\"{}\"\n"
      "\"Format\",{:.1f}\n"
      "\"LengthUnit\",\"{}\"\n"
      ";\n",
      f.header.file_type, f.header.format, f.header.length_unit);

  for(const auto& spk : f.loudspeakers)
  {
    ease_string += std::format(
        "\"Label\",\"{}\"\n"
        "\"Position\",{:.4f},{:.4f},{:.4f}\n"
        "\"Ver/Hor/Rot\",{:.1f},{:.1f},{:.1f}\n"
        "\"Speaker\",\"{}\"\n"
        "\"Delay/Align\",{},{}\n",
        spk.label, spk.x, spk.y, spk.z, spk.ver, spk.hor, spk.rot, spk.speaker,
        spk.delay, spk.align);

    ease_string += "\"dB 1m\"";
    for(const auto& db : spk.db_1m)
    {
      ease_string += std::format(",{}", db);
    }
    ease_string += "\n";

    ease_string += std::format(
        "\"Watts\",{}\n"
        "\"Phase\",{}\n"
        ";\n",
        spk.watts, spk.phase);
  }

  return ease_string;
}
}