@sutton-signwriting/core/swu/swu.mjs

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

/**
 * Object of regular expressions for SWU strings in UTF-16
 * 
 * @alias swu.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': '(?:(?:\uD8C0[\uDC01-\uDFFF])|(?:[\uD8C1-\uD8FC][\uDC00-\uDFFF])|(?:\uD8FD[\uDC00-\uDC80]))',
  'coord': '(?:\uD836[\uDC0C-\uDDFF]){2}',
  'sort': '\uD836\uDC00',
  'box': '\uD836[\uDC01-\uDC04]'
};
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}`;

/**
 * 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 prefixColor = color => {
  const regex = new RegExp(`^${re.colorhex}$`);
  return (regex.test(color) ? '#' : '') + color;
};

const definedProps = obj => Object.fromEntries(Object.entries(obj).filter(([k, v]) => v !== undefined));
/**
 * Function to parse style string to object
 * @function style.parse
 * @param {string} styleString - a style string
 * @returns {StyleObject} elements of style string
 * @example
 * style.parse('-CP10G_blue_D_red,Cyan_')
 * 
 * return {
 *  'colorize': true,
 *  'padding': 10,
 *  'background': 'blue',
 *  'detail': ['red', 'Cyan']
 * }
 */


const parse$1 = styleString => {
  const regex = `^${re.full}`;
  const m = (typeof styleString === 'string' ? styleString.match(new RegExp(regex)) : []) || [];
  return definedProps({
    'colorize': !m[1] ? undefined : !!m[1],
    'padding': !m[2] ? undefined : parseInt(m[2].slice(1)),
    'background': !m[3] ? undefined : prefixColor(m[3].slice(2, -1)),
    'detail': !m[4] ? undefined : m[4].slice(2, -1).split(',').map(prefixColor),
    'zoom': !m[5] ? undefined : m[5] === 'Zx' ? 'x' : parseFloat(m[5].slice(1)),
    'detailsym': !m[6] ? undefined : m[6].match(new RegExp(re.detailsym, 'g')).map(val => {
      const parts = val.split('_');
      const detail = parts[1].split(',').map(prefixColor);
      return {
        'index': parseInt(parts[0].slice(1)),
        'detail': detail
      };
    }),
    'classes': !m[7] ? undefined : m[7],
    'id': !m[8] ? undefined : m[8]
  });
};

/** 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 SWU number character to an integer
 * @function convert.swu2num
 * @param {string} swuNum - SWU number character
 * @returns {number} Integer value for number
 * @example
 * convert.swu2num('𝤆')
 * 
 * return 500
 */


const swu2num = swuNum => parseInt(swuNum.codePointAt(0)) - 0x1D80C + 250;
/**
 * Function to convert a number to an SWU number character
 * @function convert.num2swu
 * @param {number} num - Integer value for number
 * @returns {string} SWU number character
 * @example
 * convert.num2swu(500)
 * 
 * return '𝤆'
 */


const num2swu = num => String.fromCodePoint(0x1D80C + parseInt(num) - 250);
/**
 * Function to convert two SWU number characters to an array of x,y integers
 * @function convert.swu2coord
 * @param {string} swuCoord - Two SWU number character
 * @returns {number[]} Array of x,y integers
 * @example
 * convert.swu2coord('𝤆𝤆')
 * 
 * return [500, 500]
 */


const swu2coord = swuCoord => [swu2num(swuCoord.slice(0, 2)), swu2num(swuCoord.slice(2, 4))];
/**
 * Function to convert an array of x,y integers to two SWU number characters
 * @function convert.coord2swu
 * @param {number[]} coord - Array of x,y integers
 * @returns {string} Two SWU number character
 * @example
 * convert.coord2swu([500, 500])
 * 
 * return '𝤆𝤆'
 */


const coord2swu = coord => coord.map(num => num2swu(num)).join('');
/**
 * Function to convert an SWU symbol character to a code point on plane 4
 * @function convert.swu2code
 * @param {string} swuSym - SWU symbol character
 * @returns {number} Code point on plane 4
 * @example
 * convert.swu2code('񀀁')
 * 
 * return 0x40001
 */


const swu2code = swuSym => parseInt(swuSym.codePointAt(0));

const parse = {
  /**
   * Function to parse an swu symbol with optional coordinate and style string
   * @function swu.parse.symbol
   * @param {string} swuSym - an swu symbol
   * @returns {object} elements of swu symbol
   * @example
   * swu.parse.symbol('񀀁𝤆𝤆-C')
   * 
   * return {
   *  'symbol': '񀀁',
   *  'coord': [500, 500],
   *  'style': '-C'
   * }
   */
  symbol: swuSym => {
    const regex = `^(${re$1.symbol})(${re$1.coord})?(${re.full})?`;
    const symbol = typeof swuSym === 'string' ? swuSym.match(new RegExp(regex)) : undefined;
    return {
      'symbol': symbol ? symbol[1] : undefined,
      'coord': symbol && symbol[2] ? swu2coord(symbol[2]) : undefined,
      'style': symbol ? symbol[3] : undefined
    };
  },

  /**
    * Function to parse an swu sign with style string
    * @function swu.parse.sign
    * @param {string} swuSign - an swu sign
    * @returns {object} elements of swu sign
    * @example
    * swu.parse.sign('𝠀񀀒񀀚񋚥񋛩𝠃𝤟𝤩񋛩𝣵𝤐񀀒𝤇𝣤񋚥𝤐𝤆񀀚𝣮𝣭-C')
    * 
    * return {
    *  sequence: ['񀀒','񀀚','񋚥','񋛩'],
    *  box: '𝠃',
    *  max: [525, 535],
    *  spatials: [
    *    {
    *      symbol: '񋛩',
    *      coord: [483, 510]
    *    },
    *    {
    *      symbol: '񀀒',
    *      coord: [501, 466]
    *    },
    *    {
    *      symbol: '񋚥',
    *      coord: [510, 500]
    *    },
    *    {
    *      symbol: '񀀚',
    *      coord: [476, 475]
    *    }
    *  ],
    *  style: '-C'
    * }
    */
  sign: swuSign => {
    const regex = `^(${re$1.prefix})?(${re$1.signbox})(${re.full})?`;
    const sign = typeof swuSign === 'string' ? swuSign.match(new RegExp(regex)) : undefined;

    if (sign) {
      return {
        'sequence': sign[1] ? sign[1].slice(2).match(/.{2}/g) : undefined,
        'box': sign[2].slice(0, 2),
        'max': swu2coord(sign[2].slice(2, 6)),
        'spatials': sign[2].length < 7 ? undefined : sign[2].slice(6).match(/(.{6})/g).map(m => {
          return {
            symbol: m.slice(0, 2),
            coord: swu2coord(m.slice(2))
          };
        }),
        'style': sign[3]
      };
    } else {
      return {};
    }
  },

  /**
   * Function to parse an swu text
   * @function swu.parse.text
   * @param {string} swuText - an swu text
   * @returns {array} swu signs and punctuations
   * @example
   * swu.parse.text('𝠀񁲡񈩧𝠃𝤘𝤣񁲡𝣳𝣩񈩧𝤉𝣻 𝠀񃊢񃊫񋛕񆇡𝠃𝤘𝤧񃊫𝣻𝤕񃊢𝣴𝣼񆇡𝤎𝤂񋛕𝤆𝣦 񏌁𝣢𝤂')
   * 
   * return [
   *  '𝠀񁲡񈩧𝠃𝤘𝤣񁲡𝣳𝣩񈩧𝤉𝣻',
   *  '𝠀񃊢񃊫񋛕񆇡𝠃𝤘𝤧񃊫𝣻𝤕񃊢𝣴𝣼񆇡𝤎𝤂񋛕𝤆𝣦',
   *  '񏌁𝣢𝤂'
   * ]
   */
  text: swuText => {
    if (typeof swuText !== 'string') return [];
    const regex = `(${re$1.sign}(${re.full})?|${re$1.spatial}(${re.full})?)`;
    const matches = swuText.match(new RegExp(regex, 'g'));
    return matches ? [...matches] : [];
  }
};
/**
 * Function to encode SWU characters using the UTF-16 escape format.
 * @function swu.encode
 * @param {string} swu - SWU characters
 * @returns {string} UTF-16 escape format
 * @example
 * swu.encode('񀀁𝤆𝤆')
 * 
 * return '\\uD8C0\\uDC01\\uD836\\uDD06\\uD836\\uDD06'
 */

const encode = text => text.replace(/[\u007F-\uFFFF]/g, function (chr) {
  return "\\u" + ("0000" + chr.charCodeAt(0).toString(16)).substr(-4).toUpperCase();
});
/**
 * Function to decode UTF-16 escape format to SWU characters.
 * @function swu.decode
 * @param {string} encoded - UTF-16 escape format
 * @returns {string} SWU characters
 * @example
 * swu.decode('\\uD8C0\\uDC01\\uD836\\uDD06\\uD836\\uDD06')
 * 
 * return '񀀁𝤆𝤆'
 */


const decode = encoded => encoded.replace(/\\u([0-9A-F]{4})/g, function (match, chr) {
  return String.fromCharCode(parseInt(chr, 16));
});
/**
 * Function to decompose an SWU character into UTF-16 surrogate pairs.
 * @function swu.pair
 * @param {string} swuChar - an SWU character
 * @returns {string[]} an array of UTF-16 surrogate pairs
 * @example
 * swu.pair('񀀁')
 * 
 * return ['D8C0', 'DC01']
 */


const pair = swuChar => [swuChar.charCodeAt(0).toString(16).toUpperCase(), swuChar.charCodeAt(1).toString(16).toUpperCase()];

const compose = {
  /**
   * Function to compose an swu symbol with optional coordinate and style string
   * @function swu.compose.symbol
   * @param {object} swuSymObject - an swu symbol object
   * @param {string} swuSymObject.symbol - an swu symbol key
   * @param {number[]} swuSymObject.coord - top-left coordinate of symbol with 500,500 center
   * @param {string} swuSymObject.style - a style string for custom appearance
   * @returns {string} an swu symbol string
   * @example
   * swu.compose.symbol({
   *  'symbol': '񀀁',
   *  'coord': [500, 500],
   *  'style': '-C'
   * })
   * 
   * return '񀀁𝤆𝤆-C'
   */
  symbol: swuSymObject => {
    if (typeof swuSymObject !== 'object' || swuSymObject === null) return undefined;

    if (typeof swuSymObject.symbol === 'string') {
      const symbol = (swuSymObject.symbol.match(re$1.symbol) || [''])[0];

      if (symbol) {
        const x = swuSymObject.coord && swuSymObject.coord[0] || '';
        const y = swuSymObject.coord && swuSymObject.coord[1] || '';
        const coord = x && y ? coord2swu([x, y]) : '';
        const styleStr = typeof swuSymObject.style === 'string' && (swuSymObject.style.match(re.full) || [''])[0] || '';
        return symbol + coord + styleStr;
      }
    }

    return undefined;
  },

  /**
   * Function to compose an swu sign with style string
   * @function swu.compose.sign
   * @param {object} swuSignObject - an swu sign object
   * @param {string[]} swuSignObject.sequence - an ordered array of symbols
   * @param {string} swuSignObject.box - a choice of signbox marker: horizontal Box, Left, Middle, and Right lane
   * @param {number[]} swuSignObject.max - max bottom-right coordinate of the signbox space
   * @param {{symbol:string,coord:number[]}[]} swuSignObject.spatials - array of symbols with top-left coordinate placement
   * @param {string} swuSignObject.style - a style string for custom appearance
   * @returns {string} an swu sign string
   * @example
   * swu.compose.sign({
   *  sequence: ['񀀒','񀀚','񋚥','񋛩'],
   *  box: '𝠃',
   *  max: [525, 535],
   *  spatials: [
   *    {
   *      symbol: '񋛩',
   *      coord: [483, 510]
   *    },
   *    {
   *      symbol: '񀀒',
   *      coord: [501, 466]
   *    },
   *    {
   *      symbol: '񋚥',
   *      coord: [510, 500]
   *    },
   *    {
   *      symbol: '񀀚',
   *      coord: [476, 475]
   *    }
   *  ],
   *  style: '-C'
   * })
   * 
   * return '𝠀񀀒񀀚񋚥񋛩𝠃𝤟𝤩񋛩𝣵𝤐񀀒𝤇𝣤񋚥𝤐𝤆񀀚𝣮𝣭-C'
   */
  sign: swuSignObject => {
    if (typeof swuSignObject !== 'object' || swuSignObject === null) return undefined;
    let box = typeof swuSignObject.box !== 'string' ? '𝠃' : (swuSignObject.box + '𝠃').match(re$1.box);
    const x = swuSignObject.max && swuSignObject.max[0] || '';
    const y = swuSignObject.max && swuSignObject.max[1] || '';
    const max = x && y ? coord2swu([x, y]) : undefined;
    if (!max) return undefined;
    let prefix = '';

    if (swuSignObject.sequence && Array.isArray(swuSignObject.sequence)) {
      prefix = swuSignObject.sequence.map(key => (key.match(re$1.symbol) || [''])[0]).join('');
      prefix = prefix ? '𝠀' + prefix : '';
    }

    let signbox = '';

    if (swuSignObject.spatials && Array.isArray(swuSignObject.spatials)) {
      signbox = swuSignObject.spatials.map(spatial => {
        if (typeof spatial.symbol === 'string') {
          const symbol = (spatial.symbol.match(re$1.symbol) || [''])[0];

          if (symbol) {
            const x = spatial.coord && spatial.coord[0] || '';
            const y = spatial.coord && spatial.coord[1] || '';
            const coord = x && y ? coord2swu([x, y]) : '';

            if (coord) {
              return symbol + coord;
            }
          }
        }

        return '';
      }).join('');
    }

    const styleStr = typeof swuSignObject.style === 'string' && (swuSignObject.style.match(re.full) || [''])[0] || '';
    return prefix + box + max + signbox + styleStr;
  }
};

/**
 * Function to gather sizing information about an swu sign or symbol
 * @function swu.info
 * @param {string} swu - an swu sign or symbol
 * @returns {object} information about the swu string
 * @example
 * swu.info('𝠀񁲡񈩧𝠂𝤘𝤣񁲡𝣳𝣩񈩧𝤉𝣻-P10Z2')
 * 
 * return {
 *   minX: 481,
 *   minY: 471,
 *   width: 37,
 *   height: 58,
 *   segment: 'sign',
 *   lane: -1
 *   padding: 10,
 *   zoom: 2
 * }
 */

const info = swu => {
  let lanes = {
    '𝠁': 0,
    '𝠂': -1,
    '𝠃': 0,
    '𝠄': 1
  };
  let parsed = parse.sign(swu);
  let width, height, segment, x1, x2, y1, y2, lane;

  if (parsed.spatials) {
    x1 = Math.min(...parsed.spatials.map(spatial => spatial.coord[0]));
    x2 = parsed.max[0];
    width = x2 - x1;
    y1 = Math.min(...parsed.spatials.map(spatial => spatial.coord[1]));
    y2 = parsed.max[1];
    height = y2 - y1;
    segment = 'sign';
    lane = parsed.box;
  } else {
    parsed = parse.symbol(swu);
    lane = "𝠃";

    if (parsed.coord) {
      x1 = parsed.coord[0];
      width = (500 - x1) * 2;
      y1 = parsed.coord[1];
      height = (500 - y1) * 2;
      segment = 'symbol';
    } else {
      x1 = 490;
      width = 20;
      y1 = 490;
      height = 20;
      segment = 'none';
    }
  }

  let style = parse$1(parsed.style);
  let zoom = style.zoom || 1;
  let padding = style.padding || 0;
  return {
    minX: x1,
    minY: y1,
    width: width,
    height: height,
    segment: segment,
    lane: lanes[lane],
    padding: padding,
    zoom: zoom
  };
};

const columnDefaults = {
  'height': 500,
  'width': 150,
  'offset': 50,
  'pad': 20,
  'margin': 5,
  'dynamic': false,
  'background': undefined,
  'punctuation': {
    'spacing': true,
    'pad': 30,
    'pull': true
  },
  'style': {
    'detail': ['black', 'white'],
    'zoom': 1
  }
};
/**
 * Function to an object of column options with default values
 * 
 * @function swu.columnDefaultsMerge
 * @param {ColumnOptions} options - object of column options
 * @returns {ColumnOptions} object of column options merged with column defaults
 * @example
 * swu.columnDefaultsMerge({height: 500,width:150})
 * 
 * return {
 *   "height": 500,
 *   "width": 150,
 *   "offset": 50,
 *   "pad": 20,
 *   "margin": 5,
 *   "dynamic": false,
 *   "punctuation": {
 *     "spacing": true,
 *     "pad": 30,
 *     "pull": true
 *   },
 *   "style": {
 *     "detail": [
 *       "black",
 *       "white"
 *     ],
 *     "zoom": 1
 *   }
 * }
 */

const columnDefaultsMerge = options => {
  if (typeof options !== 'object') options = {};
  return { ...columnDefaults,
    ...options,
    punctuation: { ...columnDefaults.punctuation,
      ...options.punctuation
    },
    style: { ...columnDefaults.style,
      ...options.style
    }
  };
};
/**
 * Function to transform an SWU text to an array of columns
 * 
 * @function swu.columns
 * @param {string} swuText - SWU text of signs and punctuation
 * @param {ColumnOptions} options - object of column options
 * @returns {{options:ColumnOptions,widths:number[],columns:ColumnData}} object of column options, widths array, and column data
 * @example
 * swu.columns('𝠀񁲡񈩧𝠃𝤘𝤣񁲡𝣳𝣩񈩧𝤉𝣻 𝠀񃊢񃊫񋛕񆇡𝠃𝤘𝤧񃊫𝣻𝤕񃊢𝣴𝣼񆇡𝤎𝤂񋛕𝤆𝣦 񏌁𝣢𝤂', {height: 500,width:150})
 * 
 * return {
 *   "options": {
 *     "height": 500,
 *     "width": 150,
 *     "offset": 50,
 *     "pad": 20,
 *     "margin": 5,
 *     "dynamic": false,
 *     "punctuation": {
 *       "spacing": true,
 *       "pad": 30,
 *       "pull": true
 *     },
 *     "style": {
 *       "detail": [
 *         "black",
 *         "white"
 *       ],
 *       "zoom": 1
 *     }
 *   },
 *   "widths": [
 *     150
 *   ],
 *   "columns": [
 *     [
 *       {
 *         "x": 56,
 *         "y": 20,
 *         "minX": 481,
 *         "minY": 471,
 *         "width": 37,
 *         "height": 58,
 *         "lane": 0,
 *         "padding": 0,
 *         "segment": "sign",
 *         "text": "𝠀񁲡񈩧𝠃𝤘𝤣񁲡𝣳𝣩񈩧𝤉𝣻",
 *         "zoom": 1
 *       },
 *       {
 *         "x": 57,
 *         "y": 118,
 *         "minX": 482,
 *         "minY": 468,
 *         "width": 36,
 *         "height": 65,
 *         "lane": 0,
 *         "padding": 0,
 *         "segment": "sign",
 *         "text": "𝠀񃊢񃊫񋛕񆇡𝠃𝤘𝤧񃊫𝣻𝤕񃊢𝣴𝣼񆇡𝤎𝤂񋛕𝤆𝣦",
 *         "zoom": 1
 *       },
 *       {
 *         "x": 39,
 *         "y": 203,
 *         "minX": 464,
 *         "minY": 496,
 *         "width": 72,
 *         "height": 8,
 *         "lane": 0,
 *         "padding": 0,
 *         "segment": "symbol",
 *         "text": "񏌁𝣢𝤂",
 *         "zoom": 1
 *       }
 *     ]
 *   ]
 * }
 */


const columns = (swuText, options) => {
  if (typeof swuText !== 'string') return {};
  const values = columnDefaultsMerge(options);
  let input = parse.text(swuText);
  let cursor = 0;
  let cols = [];
  let col = [];
  let plus = 0;
  let center = parseInt(values.width / 2);
  let maxHeight = values.height - values.margin;
  let pullable = true;
  let finalize = false;

  for (let val of input) {
    let informed = info(val);
    cursor += plus;

    if (values.punctuation.spacing) {
      cursor += informed.segment == 'sign' ? values.pad : 0;
    } else {
      cursor += values.pad;
    }

    finalize = cursor + informed.height > maxHeight;

    if (finalize && informed.segment == 'symbol' && values.punctuation.pull && pullable) {
      finalize = false;
      pullable = false;
    }

    if (col.length == 0) {
      finalize = false;
    }

    if (finalize) {
      cursor = values.pad;
      cols.push(col);
      col = [];
      pullable = true;
    }

    col.push(Object.assign(informed, {
      x: center + values.offset * informed.lane - (500 - informed.minX) * informed.zoom * values.style.zoom,
      y: cursor,
      text: val
    }));
    cursor += informed.height * informed.zoom * values.style.zoom;

    if (values.punctuation.spacing) {
      plus = informed.segment == 'sign' ? values.pad : values.punctuation.pad;
    } else {
      plus = values.pad;
    }
  }

  if (col.length) {
    cols.push(col);
  } // over height issue when pulling punctuation


  if (values.punctuation.pull) {
    for (let col of cols) {
      let last = col[col.length - 1];
      let diff = last.y + last.height - (values.height - values.margin);

      if (diff > 0) {
        let adj = parseInt(diff / col.length) + 1;

        for (let i in col) {
          col[i].y -= adj * i + adj;
        }
      }
    }
  } // contract, expand, adjust


  let widths = [];

  for (let col of cols) {
    let min = [center - values.offset - values.pad];
    let max = [center + values.offset + values.pad];

    for (let item of col) {
      min.push(item.x - values.pad);
      max.push(item.x + item.width + values.pad);
    }

    min = Math.min(...min);
    max = Math.max(...max);
    let width = values.width;
    let adj = 0;

    if (!values.dynamic) {
      adj = center - parseInt((min + max) / 2);
    } else {
      width = max - min;
      adj = -min;
    }

    for (let item of col) {
      item.x += adj;
    }

    widths.push(width);
  }

  return {
    'options': values,
    'widths': widths,
    'columns': cols
  };
};

/**
 * Array of plane 4 code points for kinds of symbols: writing, location, and punctuation.
 * @alias swu.kind
 * @type {array}
 */

const kind = [0x40001, 0x4efa1, 0x4f2a1];
/**
 * Array of plane 4 code points for categories of symbols: hand, movement, dynamics, head, trunk & limb, location, and punctuation.
 * @alias swu.category
 * @type {array}
 */

const category = [0x40001, 0x461e1, 0x4bca1, 0x4bfa1, 0x4e8e1, 0x4efa1, 0x4f2a1];
/**
 * Array of plane 4 code points for the 30 symbol groups.
 * @alias swu.group
 * @type {array}
 */

const group = [0x40001, 0x40541, 0x40b41, 0x41981, 0x41c81, 0x43241, 0x43d81, 0x445c1, 0x44ce1, 0x45be1, 0x461e1, 0x46841, 0x46fc1, 0x47fe1, 0x485e1, 0x49301, 0x49e41, 0x4a4a1, 0x4afe1, 0x4b521, 0x4bca1, 0x4bfa1, 0x4c3c1, 0x4cfc1, 0x4d621, 0x4e161, 0x4e8e1, 0x4ec41, 0x4efa1, 0x4f2a1];
/**
 * Object of symbol ranges with starting and ending code points on plane 4.
 * 
 *   { all, writing, hand, movement, dynamic, head, hcenter, vcenter, trunk, limb, location, punctuation }
 * @alias swu.ranges
 * @type {object}
 */

const ranges = {
  'all': [0x40001, 0x4f480],
  'writing': [0x40001, 0x4efa0],
  'hand': [0x40001, 0x461e0],
  'movement': [0x461e1, 0x4bca0],
  'dynamic': [0x4bca1, 0x4bfa0],
  'head': [0x4bfa1, 0x4e8e0],
  'hcenter': [0x4bfa1, 0x4e8e0],
  'vcenter': [0x4bfa1, 0x4ec40],
  'trunk': [0x4e8e1, 0x4ec40],
  'limb': [0x4ec41, 0x4efa0],
  'location': [0x4efa1, 0x4f2a0],
  'punctuation': [0x4f2a1, 0x4f480]
};
/**
 * Function to test if symbol is of a certain type.
 * @function swu.isType
 * @param {string} swuSym - an SWU symbol character
 * @param {string} type - the name of a symbol range
 * @returns {boolean} is symbol of specified type
 * @example
 * swu.isType('񀀁', 'hand')
 * 
 * return true
 */

const isType = (swuSym, type) => {
  const parsed = parse.symbol(swuSym);

  if (parsed.symbol) {
    const code = swu2code(parsed.symbol);
    const range = ranges[type];

    if (range) {
      return range[0] <= code && range[1] >= code;
    }
  }

  return false;
};

/**
 * Array of colors associated with the seven symbol categories.
 * @alias swu.colors
 * @type {array}
 */

const colors = ['#0000CC', '#CC0000', '#FF0099', '#006600', '#000000', '#884411', '#FF9900'];
/**
 * Function that returns the standardized color for a symbol.
 * @function swu.colorize
 * @param {string} swuSym - an SWU symbol character
 * @returns {string} name of standardized color for symbol
 * @example
 * swu.colorize('񀀁')
 * 
 * return '#0000CC'
 */

const colorize = swuSym => {
  const parsed = parse.symbol(swuSym);
  let color = '#000000';

  if (parsed.symbol) {
    const code = swu2code(parsed.symbol);
    const index = category.findIndex(val => val > code);
    color = colors[index < 0 ? 6 : index - 1];
  }

  return color;
};

export { category, colorize, colors, columnDefaults, columnDefaultsMerge, columns, compose, decode, encode, group, info, isType, kind, pair, parse, ranges, re$1 as re };

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