/**
* Sutton SignWriting Core Module v1.4.2 (https://github.com/sutton-signwriting/core)
* Author: Steve Slevinski  (https://SteveSlevinski.me)
* fswquery.cjs is released under the MIT License.
*/

'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

/**
 * Object of regular expressions for FSW query strings
 * 
 *   { base, coord, var, symbol, range, item, list, prefix, signbox, full }
 * @alias fswquery.re
 * @type {object}
 */
let re$2 = {
  'base': '[123][0-9a-f]{2}',
  'coord': '(?:[0-9]{3}x[0-9]{3})?',
  'var': 'V[0-9]+'
};
re$2.symbol = `S${re$2.base}[0-5u][0-9a-fu]`;
re$2.range = `R${re$2.base}t${re$2.base}`;
re$2.item = `(?:${re$2.symbol}|${re$2.range})`;
re$2.list = `${re$2.item}(?:o${re$2.item})*`;
re$2.prefix = `(?:A(?:${re$2.list})+)?T`;
re$2.signbox = `(?:${re$2.list}${re$2.coord})*`;
re$2.full = `Q(${re$2.prefix})?(${re$2.signbox})?(${re$2.var})?(-?)`;

/**
 * Object of regular expressions for FSW strings
 * 
 * @alias fsw.re
 * @property {string} symbol - regular expressions for a symbol
 * @property {string} coord - regular expressions for a coordinate
 * @property {string} sort - regular expressions for the sorting marker
 * @property {string} box - regular expression for a signbox marker
 * @property {string} prefix - regular expression for a sorting marker followed by one or more symbols
 * @property {string} spatial - regular expression for a symbol followed by a coordinate
 * @property {string} signbox - regular expression for a signbox marker, max coordinate and zero or more spatial symbols
 * @property {string} sign - regular expression for an optional prefix followed by a signbox
 * @property {string} sortable - regular expression for a mandatory prefix followed by a signbox
 */
let re$1 = {
  'symbol': 'S[123][0-9a-f]{2}[0-5][0-9a-f]',
  'coord': '[0-9]{3}x[0-9]{3}',
  'sort': 'A',
  'box': '[BLMR]'
};
re$1.prefix = `(?:${re$1.sort}(?:${re$1.symbol})+)`;
re$1.spatial = `${re$1.symbol}${re$1.coord}`;
re$1.signbox = `${re$1.box}${re$1.coord}(?:${re$1.spatial})*`;
re$1.sign = `${re$1.prefix}?${re$1.signbox}`;
re$1.sortable = `${re$1.prefix}${re$1.signbox}`;

/** The convert module contains functions to convert between Formal SignWriitng in ASCII (FSW) and SignWriting in Unicode (SWU) characters, along with other types of data.
 * [Characters set definitions](https://tools.ietf.org/id/draft-slevinski-formal-signwriting-09.html#name-characters)
 * @module convert
 */
/**
 * Function to convert an FSW coordinate string to an array of x,y integers
 * @function convert.fsw2coord
 * @param {string} fswCoord - An FSW coordinate string
 * @returns {number[]} Array of x,y integers
 * @example
 * convert.fsw2coord('500x500')
 * 
 * return [500, 500]
 */


const fsw2coord = fswCoord => fswCoord.split('x').map(num => parseInt(num));

const parsePrefix = text => {
  return {
    required: true,
    parts: text == 'T' ? undefined : text.match(new RegExp(`${re$2.list}`, 'g')).map(part => {
      if (part.includes('o')) {
        return ['or'].concat(part.match(new RegExp(`(${re$2.item})`, 'g')).map(part => part[0] == 'S' ? part : part.slice(1).split('t')));
      } else {
        return part[0] == 'S' ? part : part.slice(1).split('t');
      }
    })
  };
};

const parseSignbox = text => {
  return text.match(new RegExp(`(${re$2.list}${re$2.coord})`, 'g')).map(part => {
    let coord, front;

    if (part.includes('x')) {
      coord = fsw2coord(part.slice(-7));
      front = part.slice(0, -7);
    } else {
      front = part;
    }

    if (front.includes('o')) {
      return {
        or: front.split('o').map(part => {
          if (part.includes('S')) {
            return part;
          } else {
            return part.slice(1).split('t');
          }
        }),
        coord,
        coord
      };
    } else if (front.includes('S')) {
      return {
        symbol: front,
        coord: coord
      };
    } else {
      return {
        range: front.slice(1).split('t'),
        coord: coord
      };
    }
  });
};
/**
 * Function to parse FSW query string to object
 * @function fswquery.parse
 * @param {string} fswQueryString - an FSW query string
 * @returns {object} elements of an FSW query string
 * @example
 * fswquery.parse('QAS10000S10500oS20500oR2fft304TS100uuR205t206oS207uu510x510V5-')
 * 
 * return {
 *   "query": true,
 *   "prefix": {
 *     "required": true,
 *     "parts": [
 *       "S10000",
 *       [
 *         "or",
 *         "S10500",
 *         "S20500",
 *         [
 *           "2ff",
 *           "304"
 *         ]
 *       ]
 *     ]
 *   },
 *   "signbox": [
 *     {
 *       "symbol": "S100uu"
 *     },
 *     {
 *       "or": [
 *         [
 *           "205",
 *           "206"
 *         ],
 *         "S207uu"
 *       ],
 *       "coord": [
 *         510,
 *         510
 *       ]
 *     }
 *   ],
 *   "variance": 5,
 *   "style": true
 * }
 */


const parse$1 = fswQueryString => {
  const query = typeof fswQueryString === 'string' ? fswQueryString.match(new RegExp(`^${re$2.full}`)) : undefined;
  return {
    'query': query ? true : undefined,
    'prefix': query && query[1] ? parsePrefix(query[1]) : undefined,
    'signbox': query && query[2] ? parseSignbox(query[2]) : undefined,
    'variance': query && query[3] ? parseInt(query[3].slice(1)) : undefined,
    'style': query && query[4] ? true : undefined
  };
};

/**
 * Function to compose FSW query string from object
 * @function fswquery.compose
 * @param {object} fswQueryObject - an object of style options
 * @param {boolean} fswQueryObject.query - required true for FSW query object
 * @param {object} fswQueryObject.prefix - an object for prefix elements
 * @param {boolean} fswQueryObject.prefix.required - true if sorting prefix is required
 * @param {(string|string[]|(string|string[])[])[]} fswQueryObject.prefix.parts - array of symbol strings, range arrays, and OR arrays of strings and range arrays
 * @param {({symbol:string,coord:number[]}|{range:string[],coord:number[]}|{or:(string|string[])[],coord:number[]})[]} fswQueryObject.signbox - array of objects for symbols, ranges, and list of symbols or ranges, with optional coordinates
 * @param {number} fswQueryObject.variance - amount that x or y coordinates can vary and find a match, defaults to 20
 * @param {boolean} fswQueryObject.style - boolean value for including style string in matches
 * @returns {string} FSW query string 
 * @example 
 * fswquery.compose({
 *  query: true,
 *  prefix: {
 *    required: true,
 *    parts: [
 *      'S10000',
 *      ['100', '204'],
 *      'S20500'
 *    ]
 *  },
 *  signbox: [
 *    { symbol: 'S20000' },
 *    {
 *      range: ['100', '105'],
 *      coord: [500, 500]
 *    }
 *  ],
 *  variance: 5,
 *  style: true
 * })
 *
 * return 'QAS10000R100t204S20500TS20000R100t105500x500V5-'
 */

const compose = fswQueryObject => {
  if (!fswQueryObject || !fswQueryObject.query) {
    return undefined;
  }

  let query = 'Q';

  if (fswQueryObject.prefix && fswQueryObject.prefix.required) {
    if (Array.isArray(fswQueryObject.prefix.parts)) {
      query += 'A';
      query += fswQueryObject.prefix.parts.map(part => {
        if (typeof part === 'string') {
          return part;
        } else {
          if (Array.isArray(part) && part.length == 2) {
            return `R${part[0]}t${part[1]}`;
          } else if (Array.isArray(part) && part.length > 2 && part[0] == 'or') {
            part.shift();
            return part.map(part => {
              if (typeof part === 'string') {
                return part;
              } else {
                if (Array.isArray(part) && part.length == 2) {
                  return `R${part[0]}t${part[1]}`;
                }
              }
            }).join('o');
          }
        }
      }).join('');
    }

    query += 'T';
  }

  if (Array.isArray(fswQueryObject.signbox)) {
    query += fswQueryObject.signbox.map(part => {
      let out;

      if (part.or) {
        out = part.or.map(item => {
          if (typeof item === 'string') {
            return item;
          } else {
            if (Array.isArray(item) && item.length == 2) {
              return `R${item[0]}t${item[1]}`;
            }
          }
        }).join('o');
      } else if (part.symbol) {
        out = part.symbol;
      } else {
        if (part.range && Array.isArray(part.range) && part.range.length == 2) {
          out = `R${part.range[0]}t${part.range[1]}`;
        }
      }

      return out + (Array.isArray(part.coord) && part.coord.length == 2 ? part.coord.join('x') : '');
    }).join('');
  }

  query += fswQueryObject.style ? '-' : '';
  query = query.match(new RegExp(`^${re$2.full}`))[0];
  return query;
};

/**
 * Object of regular expressions for style strings
 * 
 * @alias style.re
 * @type {object}
 * @property {string} colorize - regular expression for colorize section
 * @property {string} colorhex - regular expression for color hex values with 3 or 6 characters
 * @property {string} colorname - regular expression for css color name
 * @property {string} padding - regular expression for padding section
 * @property {string} zoom - regular expression for zoom section
 * @property {string} classbase - regular expression for class name definition
 * @property {string} id - regular expression for id definition
 * @property {string} colorbase - regular expression for color hex or color name
 * @property {string} color - regular expression for single color entry
 * @property {string} colors - regular expression for double color entry
 * @property {string} background - regular expression for background section
 * @property {string} detail - regular expression for color details for line and optional fill
 * @property {string} detailsym - regular expression for color details for individual symbols
 * @property {string} classes - regular expression for one or more class names
 * @property {string} full - full regular expression for style string
 */
let re = {
  'colorize': 'C',
  'colorhex': '(?:[0-9a-fA-F]{3}){1,2}',
  'colorname': '[a-zA-Z]+',
  'padding': 'P[0-9]{2}',
  'zoom': 'Z(?:[0-9]+(?:\\.[0-9]+)?|x)',
  'classbase': '-?[_a-zA-Z][_a-zA-Z0-9-]{0,100}',
  'id': '[a-zA-Z][_a-zA-Z0-9-]{0,100}'
};
re.colorbase = `(?:${re.colorhex}|${re.colorname})`;
re.color = `_${re.colorbase}_`;
re.colors = `_${re.colorbase}(?:,${re.colorbase})?_`;
re.background = `G${re.color}`;
re.detail = `D${re.colors}`;
re.detailsym = `D[0-9]{2}${re.colors}`;
re.classes = `${re.classbase}(?: ${re.classbase})*`;
re.full = `-(${re.colorize})?(${re.padding})?(${re.background})?(${re.detail})?(${re.zoom})?(?:-((?:${re.detailsym})*))?(?:-(${re.classes})?!(?:(${re.id})!)?)?`;

const parse = {
  /**
   * Function to parse an fsw symbol with optional coordinate and style string
   * @function fsw.parse.symbol
   * @param {string} fswSym - an fsw symbol
   * @returns {object} elements of fsw symbol
   * @example
   * fsw.parse.symbol('S10000500x500-C')
   * 
   * return {
   *  'symbol': 'S10000',
   *  'coord': [500, 500],
   *  'style': '-C'
   * }
   */
  symbol: fswSym => {
    const regex = `^(${re$1.symbol})(${re$1.coord})?(${re.full})?`;
    const symbol = typeof fswSym === 'string' ? fswSym.match(new RegExp(regex)) : undefined;
    return {
      'symbol': symbol ? symbol[1] : undefined,
      'coord': symbol && symbol[2] ? fsw2coord(symbol[2]) : undefined,
      'style': symbol ? symbol[3] : undefined
    };
  },

  /**
   * Function to parse an fsw sign with style string
   * @function fsw.parse.sign
   * @param {string} fswSign - an fsw sign
   * @returns {object} elements of fsw sign
   * @example
   * fsw.parse.sign('AS10011S10019S2e704S2e748M525x535S2e748483x510S10011501x466S2e704510x500S10019476x475-C')
   * 
   * return {
   *  sequence: ['S10011', 'S10019', 'S2e704', 'S2e748'],
   *  box: 'M',
   *  max: [525, 535],
   *  spatials: [
   *    {
   *      symbol: 'S2e748',
   *      coord: [483, 510]
   *    },
   *    {
   *      symbol: 'S10011',
   *      coord: [501, 466]
   *    },
   *    {
   *      symbol: 'S2e704',
   *      coord: [510, 500]
   *    },
   *    {
   *      symbol: 'S10019',
   *      coord: [476, 475]
   *    }
   *  ],
   *  style: '-C'
   * }
   */
  sign: fswSign => {
    const regex = `^(${re$1.prefix})?(${re$1.signbox})(${re.full})?`;
    const sign = typeof fswSign === 'string' ? fswSign.match(new RegExp(regex)) : undefined;

    if (sign) {
      return {
        'sequence': sign[1] ? sign[1].slice(1).match(/.{6}/g) : undefined,
        'box': sign[2][0],
        'max': fsw2coord(sign[2].slice(1, 8)),
        'spatials': sign[2].length < 9 ? undefined : sign[2].slice(8).match(/(.{13})/g).map(m => {
          return {
            symbol: m.slice(0, 6),
            coord: [parseInt(m.slice(6, 9)), parseInt(m.slice(10, 13))]
          };
        }),
        'style': sign[3]
      };
    } else {
      return {};
    }
  },

  /**
   * Function to parse an fsw text
   * @function fsw.parse.text
   * @param {string} fswText - an fsw text
   * @returns {array} fsw signs and punctuations
   * @example
   * fsw.parse.text('AS14c20S27106M518x529S14c20481x471S27106503x489 AS18701S1870aS2e734S20500M518x533S1870a489x515S18701482x490S20500508x496S2e734500x468 S38800464x496')
   * 
   * return [
   *  'AS14c20S27106M518x529S14c20481x471S27106503x489',
   *  'AS18701S1870aS2e734S20500M518x533S1870a489x515S18701482x490S20500508x496S2e734500x468',
   *  'S38800464x496'
   * ]
   */
  text: fswText => {
    if (typeof fswText !== 'string') return [];
    const regex = `(${re$1.sign}(${re.full})?|${re$1.spatial}(${re.full})?)`;
    const matches = fswText.match(new RegExp(regex, 'g'));
    return matches ? [...matches] : [];
  }
};

/**
 * Function to convert an FSW sign to a query string
 * 
 * For the flags parameter, use one or more of the following.
 * - A: exact symbol in temporal prefix
 * - a: general symbol in temporal prefix
 * - S: exact symbol in spatial signbox
 * - s: general symbol in spatial signbox
 * - L: spatial signbox symbol at location
 * @function fswquery.fsw2query
 * @param {string} fswSign - FSW sign
 * @param {string} flags - flags for query string creation
 * @returns {string} FSW query string
 * @example
 * fswquery.fsw2query('AS10011S10019S2e704S2e748M525x535S2e748483x510S10011501x466S2e704510x500S10019476x475', 'ASL')
 * 
 * return 'QAS10011S10019S2e704S2e748TS2e748483x510S10011501x466S2e704510x500S10019476x475'
 */

const fsw2query = (fswSign, flags) => {
  let query = '';
  const parsed = parse.sign(fswSign);

  if (parsed.box) {
    const A_flag = flags.indexOf('A') > -1;
    const a_flag = flags.indexOf('a') > -1;
    const S_flag = flags.indexOf('S') > -1;
    const s_flag = flags.indexOf('s') > -1;
    const L_flag = flags.indexOf('L') > -1;

    if (A_flag || a_flag || S_flag || s_flag) {
      if ((A_flag || a_flag) && parsed.sequence) {
        query += 'A';
        query += parsed.sequence.map(sym => sym.slice(0, 4) + (a_flag ? 'uu' : sym.slice(4, 6))).join('');
        query += 'T';
      }

      if ((S_flag || s_flag) && parsed.spatials) {
        query += parsed.spatials.map(spatial => spatial.symbol.slice(0, 4) + (s_flag ? 'uu' : spatial.symbol.slice(4, 6)) + (L_flag ? spatial.coord.join('x') : '')).join('');
      }
    }

    return query ? "Q" + query : undefined;
  } else {
    return undefined;
  }
};

//needs rewritten, but it works

/**
 * Function to transform a range to a regular expression
 * @function fswquery.range
 * @param {(number|string)} min - either a decimal number or hexidecimal string
 * @param {(number|string)} max - either a decimal number or hexidecimal string
 * @param {boolean?} hex - if true, the regular expression will match a hexidecimal range
 * @returns {string} a regular expression that matches a range
 * @example
 * fswquery.range(500,750)
 * 
 * return '(([56][0-9][0-9])|(7[0-4][0-9])|(750))'
 * @example
 * fswquery.range('100','10e',true)
 * 
 * return '10[0-9a-e]'
 */
const range = (min, max, hex) => {
  let pattern;
  let re;
  let diff;
  let tmax;
  let cnt;
  let minV;
  let maxV;

  if (!hex) {
    hex = '';
  }

  min = ("000" + min).slice(-3);
  max = '' + max;
  pattern = '';

  if (min === max) {
    return min;
  } //ending pattern will be series of connected OR ranges


  re = []; //first pattern+  10's don't match and the min 1's are not zero
  //odd number to 9

  if (!(min[0] == max[0] && min[1] == max[1])) {
    if (min[2] != '0') {
      pattern = min[0] + min[1];

      if (hex) {
        //switch for dex
        switch (min[2]) {
          case "f":
            pattern += 'f';
            break;

          case "e":
            pattern += '[ef]';
            break;

          case "d":
          case "c":
          case "b":
          case "a":
            pattern += '[' + min[2] + '-f]';
            break;

          default:
            switch (min[2]) {
              case "9":
                pattern += '[9a-f]';
                break;

              case "8":
                pattern += '[89a-f]';
                break;

              default:
                pattern += '[' + min[2] + '-9a-f]';
                break;
            }

            break;
        }

        diff = 15 - parseInt(min[2], 16) + 1;
        min = '' + (parseInt(min, 16) + diff).toString(16);
        re.push(pattern);
      } else {
        //switch for dex
        switch (min[2]) {
          case "9":
            pattern += '9';
            break;

          case "8":
            pattern += '[89]';
            break;

          default:
            pattern += '[' + min[2] + '-9]';
            break;
        }

        diff = 9 - min[2] + 1;
        min = '' + (min * 1 + diff);
        re.push(pattern);
      }
    }
  }

  pattern = ''; //if hundreds are different, get odd to 99 or ff

  if (min[0] != max[0]) {
    if (min[1] != '0') {
      if (hex) {
        //scrape to ff
        pattern = min[0];

        switch (min[1]) {
          case "f":
            pattern += 'f';
            break;

          case "e":
            pattern += '[ef]';
            break;

          case "d":
          case "c":
          case "b":
          case "a":
            pattern += '[' + min[1] + '-f]';
            break;

          case "9":
            pattern += '[9a-f]';
            break;

          case "8":
            pattern += '[89a-f]';
            break;

          default:
            pattern += '[' + min[1] + '-9a-f]';
            break;
        }

        pattern += '[0-9a-f]';
        diff = 15 - parseInt(min[1], 16) + 1;
        min = '' + (parseInt(min, 16) + diff * 16).toString(16);
        re.push(pattern);
      } else {
        //scrape to 99
        pattern = min[0];
        diff = 9 - min[1] + 1;

        switch (min[1]) {
          case "9":
            pattern += '9';
            break;

          case "8":
            pattern += '[89]';
            break;

          default:
            pattern += '[' + min[1] + '-9]';
            break;
        }

        pattern += '[0-9]';
        diff = 9 - min[1] + 1;
        min = '' + (min * 1 + diff * 10);
        re.push(pattern);
      }
    }
  }

  pattern = ''; //if hundreds are different, get to same

  if (min[0] != max[0]) {
    if (hex) {
      diff = parseInt(max[0], 16) - parseInt(min[0], 16);
      tmax = (parseInt(min[0], 16) + diff - 1).toString(16);

      switch (diff) {
        case 1:
          pattern = min[0];
          break;

        case 2:
          pattern = '[' + min[0] + tmax + ']';
          break;

        default:
          if (parseInt(min[0], 16) > 9) {
            minV = 'h';
          } else {
            minV = 'd';
          }

          if (parseInt(tmax, 16) > 9) {
            maxV = 'h';
          } else {
            maxV = 'd';
          }

          switch (minV + maxV) {
            case "dd":
              pattern += '[' + min[0] + '-' + tmax + ']';
              break;

            case "dh":
              diff = 9 - min[0]; //firs get up to 9

              switch (diff) {
                case 0:
                  pattern += '[9';
                  break;

                case 1:
                  pattern += '[89';
                  break;

                default:
                  pattern += '[' + min[0] + '-9';
                  break;
              }

              switch (tmax[0]) {
                case 'a':
                  pattern += 'a]';
                  break;

                case 'b':
                  pattern += 'ab]';
                  break;

                default:
                  pattern += 'a-' + tmax + ']';
                  break;
              }

              break;

            case "hh":
              pattern += '[' + min[0] + '-' + tmax + ']';
              break;
          }

      }

      pattern += '[0-9a-f][0-9a-f]';
      diff = parseInt(max[0], 16) - parseInt(min[0], 16);
      min = '' + (parseInt(min, 16) + diff * 256).toString(16);
      re.push(pattern);
    } else {
      diff = max[0] - min[0];
      tmax = min[0] * 1 + diff - 1;

      switch (diff) {
        case 1:
          pattern = min[0];
          break;

        case 2:
          pattern = '[' + min[0] + tmax + ']';
          break;

        default:
          pattern = '[' + min[0] + '-' + tmax + ']';
          break;
      }

      pattern += '[0-9][0-9]';
      min = '' + (min * 1 + diff * 100);
      re.push(pattern);
    }
  }

  pattern = ''; //if tens are different, get to same

  if (min[1] != max[1]) {
    if (hex) {
      diff = parseInt(max[1], 16) - parseInt(min[1], 16);
      tmax = (parseInt(min[1], 16) + diff - 1).toString(16);
      pattern = min[0];

      switch (diff) {
        case 1:
          pattern += min[1];
          break;

        case 2:
          pattern += '[' + min[1] + tmax + ']';
          break;

        default:
          if (parseInt(min[1], 16) > 9) {
            minV = 'h';
          } else {
            minV = 'd';
          }

          if (parseInt(tmax, 16) > 9) {
            maxV = 'h';
          } else {
            maxV = 'd';
          }

          switch (minV + maxV) {
            case "dd":
              pattern += '[' + min[1];

              if (diff > 1) {
                pattern += '-';
              }

              pattern += tmax + ']';
              break;

            case "dh":
              diff = 9 - min[1]; //firs get up to 9

              switch (diff) {
                case 0:
                  pattern += '[9';
                  break;

                case 1:
                  pattern += '[89';
                  break;

                default:
                  pattern += '[' + min[1] + '-9';
                  break;
              }

              switch (max[1]) {
                case 'a':
                  pattern += ']';
                  break;

                case 'b':
                  pattern += 'a]';
                  break;

                default:
                  pattern += 'a-' + (parseInt(max[1], 16) - 1).toString(16) + ']';
                  break;
              }

              break;

            case "hh":
              pattern += '[' + min[1];

              if (diff > 1) {
                pattern += '-';
              }

              pattern += (parseInt(max[1], 16) - 1).toString(16) + ']';
              break;
          }

          break;
      }

      pattern += '[0-9a-f]';
      diff = parseInt(max[1], 16) - parseInt(min[1], 16);
      min = '' + (parseInt(min, 16) + diff * 16).toString(16);
      re.push(pattern);
    } else {
      diff = max[1] - min[1];
      tmax = min[1] * 1 + diff - 1;
      pattern = min[0];

      switch (diff) {
        case 1:
          pattern += min[1];
          break;

        case 2:
          pattern += '[' + min[1] + tmax + ']';
          break;

        default:
          pattern += '[' + min[1] + '-' + tmax + ']';
          break;
      }

      pattern += '[0-9]';
      min = '' + (min * 1 + diff * 10);
      re.push(pattern);
    }
  }

  pattern = ''; //if digits are different, get to same

  if (min[2] != max[2]) {
    if (hex) {
      pattern = min[0] + min[1];
      diff = parseInt(max[2], 16) - parseInt(min[2], 16);

      if (parseInt(min[2], 16) > 9) {
        minV = 'h';
      } else {
        minV = 'd';
      }

      if (parseInt(max[2], 16) > 9) {
        maxV = 'h';
      } else {
        maxV = 'd';
      }

      switch (minV + maxV) {
        case "dd":
          pattern += '[' + min[2];

          if (diff > 1) {
            pattern += '-';
          }

          pattern += max[2] + ']';
          break;

        case "dh":
          diff = 9 - min[2]; //firs get up to 9

          switch (diff) {
            case 0:
              pattern += '[9';
              break;

            case 1:
              pattern += '[89';
              break;

            default:
              pattern += '[' + min[2] + '-9';
              break;
          }

          switch (max[2]) {
            case 'a':
              pattern += 'a]';
              break;

            case 'b':
              pattern += 'ab]';
              break;

            default:
              pattern += 'a-' + max[2] + ']';
              break;
          }

          break;

        case "hh":
          pattern += '[' + min[2];

          if (diff > 1) {
            pattern += '-';
          }

          pattern += max[2] + ']';
          break;
      }

      diff = parseInt(max[2], 16) - parseInt(min[2], 16);
      min = '' + (parseInt(min, 16) + diff).toString(16);
      re.push(pattern);
    } else {
      diff = max[2] - min[2];
      pattern = min[0] + min[1];

      switch (diff) {
        case 0:
          pattern += min[2];
          break;

        case 1:
          pattern += '[' + min[2] + max[2] + ']';
          break;

        default:
          pattern += '[' + min[2] + '-' + max[2] + ']';
          break;
      }

      min = '' + (min * 1 + diff);
      re.push(pattern);
    }
  }

  pattern = ''; //last place is whole hundred

  if (min[2] == '0' && max[2] == '0') {
    pattern = max;
    re.push(pattern);
  }

  pattern = '';
  cnt = re.length;

  if (cnt == 1) {
    pattern = re[0];
  } else {
    pattern = re.join(')|(');
    pattern = '((' + pattern + '))';
  }

  return pattern;
};

const regexSymbol = sym => {
  let segment = sym.slice(0, 4);
  let fill = sym.slice(4, 5);

  if (fill == 'u') {
    segment += '[0-5]';
  } else {
    segment += fill;
  }

  let rotate = sym.slice(5, 6);

  if (rotate == 'u') {
    segment += '[0-9a-f]';
  } else {
    segment += rotate;
  }

  return segment;
};

const regexRange = symRange => {
  let from = symRange.slice(1, 4);
  let to = symRange.slice(5, 8);
  return 'S' + range(from, to, 'hex') + '[0-5][0-9a-f]';
}; //needs rewritten, but it works

/**
 * Function to transform an FSW query string to one or more regular expressions
 * @function fswquery.regex
 * @param {string} query - an FSW query string
 * @returns {string[]} an array of one or more regular expressions
 * @example
 * fswquery.regex('QS100uuS20500480x520')
 * 
 * return [
 *   '(?:A(?:S[123][0-9a-f]{2}[0-5][0-9a-f])+)?[BLMR]([0-9]{3}x[0-9]{3})(S[123][0-9a-f]{2}[0-5][0-9a-f][0-9]{3}x[0-9]{3})*S100[0-5][0-9a-f][0-9]{3}x[0-9]{3}(S[123][0-9a-f]{2}[0-5][0-9a-f][0-9]{3}x[0-9]{3})*',
 *   '(?:A(?:S[123][0-9a-f]{2}[0-5][0-9a-f])+)?[BLMR]([0-9]{3}x[0-9]{3})(S[123][0-9a-f]{2}[0-5][0-9a-f][0-9]{3}x[0-9]{3})*S20500((4[6-9][0-9])|(500))x((5[0-3][0-9])|(540))(S[123][0-9a-f]{2}[0-5][0-9a-f][0-9]{3}x[0-9]{3})*'
 * ]
 */


const regex = query => {
  query = query.match(new RegExp(`^${re$2.full}`))[0];

  if (!query) {
    return '';
  }

  var matches;
  var matchesOr;
  var matched;
  var orList;
  var i;
  var j;
  var segment;
  var coord;
  var x;
  var y;
  var fuzz = 20;
  var q_style = '(' + re.full + ')?';
  var q_sortable;

  if (query == 'Q') {
    return [re$1.prefix + "?" + re$1.signbox];
  }

  if (query == 'Q-') {
    return [re$1.prefix + "?" + re$1.signbox + q_style];
  }

  if (query == 'QT') {
    return [re$1.prefix + re$1.signbox];
  }

  if (query == 'QT-') {
    return [re$1.prefix + re$1.signbox + q_style];
  }

  var segments = [];
  var sortable = query.indexOf('T') + 1;

  if (sortable) {
    q_sortable = '(A';
    var qat = query.slice(0, sortable);
    query = query.replace(qat, '');

    if (qat == 'QT') {
      q_sortable += '(' + re$1.symbol + ')+)';
    } else {
      matches = qat.match(new RegExp('(' + re$2.list + ')', 'g'));

      if (matches) {
        for (i = 0; i < matches.length; i += 1) {
          orList = [];
          matchesOr = matches[i].match(new RegExp('(' + re$2.symbol + '|' + re$2.range + ')', 'g'));

          if (matchesOr) {
            for (j = 0; j < matchesOr.length; j += 1) {
              matched = matchesOr[j].match(new RegExp(re$2.symbol));

              if (matched) {
                orList.push(regexSymbol(matched[0]));
              } else {
                orList.push(regexRange(matchesOr[j]));
              }
            }

            if (orList.length == 1) {
              q_sortable += orList[0];
            } else {
              q_sortable += '(' + orList.join('|') + ')';
            }
          }
        }

        q_sortable += '(' + re$1.symbol + ')*)';
      }
    }
  } //get the variance


  matches = query.match(new RegExp(re$2.var, 'g'));

  if (matches) {
    fuzz = matches.toString().slice(1) * 1;
  } //this gets all symbols and ranges with or without location


  matches = query.match(new RegExp(re$2.list + re$2.coord, 'g'));

  if (matches) {
    for (i = 0; i < matches.length; i += 1) {
      orList = [];
      matchesOr = matches[i].match(new RegExp('(' + re$2.symbol + '|' + re$2.range + ')', 'g'));

      if (matchesOr) {
        for (j = 0; j < matchesOr.length; j += 1) {
          matched = matchesOr[j].match(new RegExp(re$2.symbol));

          if (matched) {
            orList.push(regexSymbol(matched[0]));
          } else {
            orList.push(regexRange(matchesOr[j]));
          }
        }

        if (orList.length == 1) {
          segment = orList[0];
        } else {
          segment = '(' + orList.join('|') + ')';
        }
      }

      if (matches[i].includes('x')) {
        coord = fsw2coord(matches[i].slice(-7));
        x = coord[0];
        y = coord[1];
        segment += range(x - fuzz, x + fuzz);
        segment += 'x';
        segment += range(y - fuzz, y + fuzz);
      } else {
        segment += re$1.coord;
      } // add to general fsw word


      segment = re$1.signbox + segment + '(' + re$1.symbol + re$1.coord + ')*';

      if (sortable) {
        segment = q_sortable + segment;
      } else {
        segment = re$1.prefix + "?" + segment;
      }

      if (query.indexOf('-') > 0) {
        segment += q_style;
      }

      segments.push(segment);
    }
  }

  if (!segments.length) {
    if (query.indexOf('-') > 0) {
      segment += q_style;
    }

    segments.push(q_sortable + re$1.signbox);
  }

  return segments;
};

/**
 * Function that uses a query string to match signs from a string of text.
 * @function fswquery.results
 * @param {string} query - an FSW query string
 * @param {string} text - a string of text containing multiple signs
 * @returns {string[]} an array of FSW signs
 * @example
 * fswquery.results('QAS10011T','AS10011S10019S2e704S2e748M525x535S2e748483x510S10011501x466S2e704510x500S10019476x475 AS15a21S15a07S21100S2df04S2df14M521x538S15a07494x488S15a21498x489S2df04498x517S2df14497x461S21100479x486 AS1f010S10018S20600M519x524S10018485x494S1f010490x494S20600481x476')
 * 
 * return [
 *   'AS10011S10019S2e704S2e748M525x535S2e748483x510S10011501x466S2e704510x500S10019476x475'
 * ]
 */

const results = (query, text) => {
  if (!text) {
    return [];
  }

  let pattern;
  let matches;
  let parts;
  let words;
  let re = regex(query);

  if (!re) {
    return [];
  }

  let i;

  for (i = 0; i < re.length; i += 1) {
    pattern = re[i];
    matches = text.match(new RegExp(pattern, 'g'));

    if (matches) {
      text = matches.join(' ');
    } else {
      text = '';
    }
  }

  if (text) {
    parts = text.split(' ');
    words = parts.filter(function (element) {
      return element in parts ? false : parts[element] = true;
    }, {});
  } else {
    words = [];
  }

  return words;
}; //needs rewritten, but it works

/**
 * Function that uses an FSW query string to match signs from multiple lines of text.
 * @function fswquery.lines
 * @param {string} query - an FSW query string
 * @param {string} text - multiple lines of text, each starting with an FSW sign
 * @returns {string[]} an array of lines of text, each starting with an FSW sign
 * @example
 * fswquery.lines('QAS10011T',`AS10011S10019S2e704S2e748M525x535S2e748483x510S10011501x466S2e704510x500S10019476x475 line one
 * AS15a21S15a07S21100S2df04S2df14M521x538S15a07494x488S15a21498x489S2df04498x517S2df14497x461S21100479x486 line two
 * AS1f010S10018S20600M519x524S10018485x494S1f010490x494S20600481x476 line three`)
 * 
 * return [
 *   'AS10011S10019S2e704S2e748M525x535S2e748483x510S10011501x466S2e704510x500S10019476x475 line one'
 * ]
 */


const lines = (query, text) => {
  if (!text) {
    return [];
  }

  let pattern;
  let matches;
  let parts;
  let words;
  let re = regex(query);

  if (!re) {
    return [];
  }

  let i;

  for (i = 0; i < re.length; i += 1) {
    pattern = re[i];
    pattern = '^' + pattern + '.*';
    matches = text.match(new RegExp(pattern, 'mg'));

    if (matches) {
      text = matches.join("\n");
    } else {
      text = '';
    }
  }

  if (text) {
    parts = text.split("\n");
    words = parts.filter(function (element) {
      return element in parts ? false : parts[element] = true;
    }, {});
  } else {
    words = [];
  }

  return words;
};

exports.compose = compose;
exports.fsw2query = fsw2query;
exports.lines = lines;
exports.parse = parse$1;
exports.range = range;
exports.re = re$2;
exports.regex = regex;
exports.results = results;

/* support ongoing development on https://patreon.com/signwriting */