WebCompDev / COMPONENTS

  'use strict';
  
  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
  
  var string_prototype_startswith = require('string.prototype.startswith');
  var string_prototype_endswith = require('string.prototype.endswith');
  var fs = require('fs');
  
  function L10nError(message, id, lang) {
    this.name = 'L10nError';
    this.message = message;
    this.id = id;
    this.lang = lang;
  }
  L10nError.prototype = Object.create(Error.prototype);
  L10nError.prototype.constructor = L10nError;
  
  function load(url) {
    return new Promise(function (resolve, reject) {
      fs.readFile(url, function (err, data) {
        if (err) {
          reject(new L10nError(err.message));
        } else {
          resolve(data.toString());
        }
      });
    });
  }
  

  function fetchResource$1(res, lang) {
    var url = res.replace('{locale}', lang.code);

    return res.endsWith('.json') ? load(url).then(JSON.parse) : load(url);
  }
  

  var MAX_PLACEABLES$1 = 100;

  var L20nParser = {
    parse: function (emit, string) {
      this._source = string;
      this._index = 0;
      this._length = string.length;
      this.entries = Object.create(null);
      this.emit = emit;

      return this.getResource();
    },

    getResource: function () {
      this.getWS();
      while (this._index < this._length) {
        try {
          this.getEntry();
        } catch (e) {
          if (e instanceof L10nError) {
            this.getJunkEntry();
            if (!this.emit) {
              throw e;
            }
          } else {
            throw e;
          }
        }

        if (this._index < this._length) {
          this.getWS();
        }
      }

      return this.entries;
    },

    getEntry: function () {
      if (this._source[this._index] === '<') {
        ++this._index;
        var id = this.getIdentifier();
        if (this._source[this._index] === '[') {
          ++this._index;
          return this.getEntity(id, this.getItemList(this.getExpression, ']'));
        }
        return this.getEntity(id);

      }

      if (this._source.startsWith('/*', this._index)) {
        return this.getComment();
      }

      throw this.error('Invalid entry');
    },

    getEntity: function (id, index) {
      if (!this.getRequiredWS()) {
        throw this.error('Expected white space');
      }

      var ch = this._source[this._index];
      var value = this.getValue(ch, index === undefined);
      var attrs = undefined;

      if (value === undefined) {
        if (ch === '>') {
          throw this.error('Expected ">"');
        }
        attrs = this.getAttributes();
      } else {
        var ws1 = this.getRequiredWS();
        if (this._source[this._index] !== '>') {
          if (!ws1) {
            throw this.error('Expected ">"');
          }
          attrs = this.getAttributes();
        }
      }

      ++this._index;

      if (id in this.entries) {
        throw this.error('Duplicate entry ID "' + id, 'duplicateerror');
      }
      if (!attrs && !index && typeof value === 'string') {
        this.entries[id] = value;
      } else {
        this.entries[id] = {
          value: value,
          attrs: attrs,
          index: index
        };
      }
    },

    getValue: function () {
      var ch = arguments.length <= 0 || arguments[0] === undefined ? this._source[this._index] : arguments[0];
      var optional = arguments.length <= 1 || arguments[1] === undefined ? false : arguments[1];

      switch (ch) {
        case '\'':
        case '"':
          return this.getString(ch, 1);
        case '{':
          return this.getHash();

      }

      if (!optional) {
        throw this.error('Unknown value type');
      }

      return;
    },

    getWS: function () {
      var cc = this._source.charCodeAt(this._index);

      while (cc === 32 || cc === 10 || cc === 9 || cc === 13) {
        cc = this._source.charCodeAt(++this._index);

      }

    },

    getRequiredWS: function () {
      var pos = this._index;
      var cc = this._source.charCodeAt(pos);

      while (cc === 32 || cc === 10 || cc === 9 || cc === 13) {
        cc = this._source.charCodeAt(++this._index);
      }
      return this._index !== pos;
    },

    getIdentifier: function () {
      var start = this._index;
      var cc = this._source.charCodeAt(this._index);

      if (cc >= 97 && cc <= 122 || cc >= 65 && cc <= 90 || cc === 95) {
        cc = this._source.charCodeAt(++this._index);
      } else {
        throw this.error('Identifier has to start with [a-zA-Z_]');

      }

  
      while (cc >= 97 && cc <= 122 || cc >= 65 && cc <= 90 || cc >= 48 && cc <= 57 || cc === 95) {
        cc = this._source.charCodeAt(++this._index);

      }

      return this._source.slice(start, this._index);
    },

    getUnicodeChar: function () {
      for (var i = 0; i < 4; i++) {
        var cc = this._source.charCodeAt(++this._index);
        if (cc > 96 && cc < 103 || cc > 64 && cc < 71 || cc > 47 && cc < 58) {
          continue;
        }
        throw this.error('Illegal unicode escape sequence');
      }
      this._index++;
      return String.fromCharCode(parseInt(this._source.slice(this._index - 4, this._index), 16));
    },

    stringRe: /"|'|{{|\\/g,
    getString: function (opchar, opcharLen) {
      var body = [];
      var placeables = 0;

      this._index += opcharLen;
      var start = this._index;

      var bufStart = start;
      var buf = '';

      while (true) {
        this.stringRe.lastIndex = this._index;
        var match = this.stringRe.exec(this._source);

        if (!match) {
          throw this.error('Unclosed string literal');
        }

        if (match[0] === '"' || match[0] === '\'') {
          if (match[0] !== opchar) {
            this._index += opcharLen;
            continue;
          }
          this._index = match.index + opcharLen;
          break;
        }

        if (match[0] === '{{') {
          if (placeables > MAX_PLACEABLES$1 - 1) {
            throw this.error('Too many placeables, maximum allowed is ' + MAX_PLACEABLES$1);
          }
          placeables++;
          if (match.index > bufStart || buf.length > 0) {
            body.push(buf + this._source.slice(bufStart, match.index));
            buf = '';
          }
          this._index = match.index + 2;
          this.getWS();
          body.push(this.getExpression());
          this.getWS();
          this._index += 2;
          bufStart = this._index;
          continue;
        }

        if (match[0] === '\\') {
          this._index = match.index + 1;
          var ch2 = this._source[this._index];
          if (ch2 === 'u') {
            buf += this._source.slice(bufStart, match.index) + this.getUnicodeChar();
          } else if (ch2 === opchar || ch2 === '\\') {
            buf += this._source.slice(bufStart, match.index) + ch2;
            this._index++;
          } else if (this._source.startsWith('{{', this._index)) {
            buf += this._source.slice(bufStart, match.index) + '{{';
            this._index += 2;
          } else {
            throw this.error('Illegal escape sequence');
          }
          bufStart = this._index;
        }

      }

  
      if (body.length === 0) {
        return buf + this._source.slice(bufStart, this._index - opcharLen);

      }

  
      if (this._index - opcharLen > bufStart || buf.length > 0) {
        body.push(buf + this._source.slice(bufStart, this._index - opcharLen));

      }

  
      return body;
    },
  
    getAttributes: function () {
      var attrs = Object.create(null);
  
      while (true) {
        this.getAttribute(attrs);
        var ws1 = this.getRequiredWS();
        var ch = this._source.charAt(this._index);
        if (ch === '>') {
          break;
        } else if (!ws1) {
          throw this.error('Expected ">"');
        }

      }

      return attrs;

    },

  
    getAttribute: function (attrs) {
      var key = this.getIdentifier();
      var index = undefined;
  
      if (this._source[this._index] === '[') {
        ++this._index;
        this.getWS();
        index = this.getItemList(this.getExpression, ']');

      }

      this.getWS();
      if (this._source[this._index] !== ':') {
        throw this.error('Expected ":"');

      }

      ++this._index;
      this.getWS();
      var value = this.getValue();
  
      if (key in attrs) {
        throw this.error('Duplicate attribute "' + key, 'duplicateerror');

      }

  
      if (!index && typeof value === 'string') {
        attrs[key] = value;
      } else {
        attrs[key] = {
          value: value,
          index: index
        };

      }

    },

  
    getHash: function () {
      var items = Object.create(null);
  
      ++this._index;
      this.getWS();
  
      var defKey = undefined;
  
      while (true) {
        var _getHashItem = this.getHashItem();
  
        var key = _getHashItem[0];
        var value = _getHashItem[1];
        var def = _getHashItem[2];
  
        items[key] = value;
  
        if (def) {
          if (defKey) {
            throw this.error('Default item redefinition forbidden');
          }
          defKey = key;
        }
        this.getWS();
  
        var comma = this._source[this._index] === ',';
        if (comma) {
          ++this._index;
          this.getWS();
        }
        if (this._source[this._index] === '}') {
          ++this._index;
          break;
        }
        if (!comma) {
          throw this.error('Expected "}"');
        }

      }

  
      if (defKey) {
        items.__default = defKey;

      }

  
      return items;

    },

  
    getHashItem: function () {
      var defItem = false;
      if (this._source[this._index] === '*') {
        ++this._index;
        defItem = true;

      }

  
      var key = this.getIdentifier();
      this.getWS();
      if (this._source[this._index] !== ':') {
        throw this.error('Expected ":"');

      }

      ++this._index;
      this.getWS();
  
      return [key, this.getValue(), defItem];

    },

  
    getComment: function () {
      this._index += 2;
      var start = this._index;
      var end = this._source.indexOf('*/', start);
  
      if (end === -1) {
        throw this.error('Comment without a closing tag');

      }

  
      this._index = end + 2;

    },

  
    getExpression: function () {
      var exp = this.getPrimaryExpression();
  
      while (true) {
        var ch = this._source[this._index];
        if (ch === '.' || ch === '[') {
          ++this._index;
          exp = this.getPropertyExpression(exp, ch === '[');
        } else if (ch === '(') {
          ++this._index;
          exp = this.getCallExpression(exp);
        } else {
          break;
        }

      }

  
      return exp;
    },
  
    getPropertyExpression: function (idref, computed) {
      var exp = undefined;
  
      if (computed) {
        this.getWS();
        exp = this.getExpression();
        this.getWS();
        if (this._source[this._index] !== ']') {
          throw this.error('Expected "]"');
        }
        ++this._index;
      } else {
        exp = this.getIdentifier();

      }

  
      return {
        type: 'prop',
        expr: idref,
        prop: exp,
        cmpt: computed
      };

    },

  
    getCallExpression: function (callee) {
      this.getWS();
  
      return {
        type: 'call',
        expr: callee,
        args: this.getItemList(this.getExpression, ')')
      };
    },
  
    getPrimaryExpression: function () {
      var ch = this._source[this._index];
  
      switch (ch) {
        case '$':
          ++this._index;
          return {
            type: 'var',
            name: this.getIdentifier()
          };
        case '@':
          ++this._index;
          return {
            type: 'glob',
            name: this.getIdentifier()
          };
        default:
          return {
            type: 'id',
            name: this.getIdentifier()
          };

      }

    },

  
    getItemList: function (callback, closeChar) {
      var items = [];
      var closed = false;
  
      this.getWS();
  
      if (this._source[this._index] === closeChar) {
        ++this._index;
        closed = true;

      }

  
      while (!closed) {
        items.push(callback.call(this));
        this.getWS();
        var ch = this._source.charAt(this._index);
        switch (ch) {
          case ',':
            ++this._index;
            this.getWS();
            break;
          case closeChar:
            ++this._index;
            closed = true;
            break;
          default:
            throw this.error('Expected "," or "' + closeChar + '"');
        }

      }

  
      return items;

    },

  
    getJunkEntry: function () {
      var pos = this._index;
      var nextEntity = this._source.indexOf('<', pos);
      var nextComment = this._source.indexOf('/*', pos);
  
      if (nextEntity === -1) {
        nextEntity = this._length;

      }

      if (nextComment === -1) {
        nextComment = this._length;

      }

  
      var nextEntry = Math.min(nextEntity, nextComment);
  
      this._index = nextEntry;

    },

  
    error: function (message) {
      var type = arguments.length <= 1 || arguments[1] === undefined ? 'parsererror' : arguments[1];
  
      var pos = this._index;
  
      var start = this._source.lastIndexOf('<', pos - 1);
      var lastClose = this._source.lastIndexOf('>', pos - 1);
      start = lastClose > start ? lastClose + 1 : start;
      var context = this._source.slice(start, pos + 10);
  
      var msg = message + ' at pos ' + pos + ': `' + context + '`';
      var err = new L10nError(msg);
      if (this.emit) {
        this.emit(type, err);

      }

      return err;
    }
  };
  
  var MAX_PLACEABLES = 100;
  
  var PropertiesParser = {
    patterns: null,
    entryIds: null,
    emit: null,
  
    init: function () {
      this.patterns = {
        comment: /^\s*#|^\s*$/,
        entity: /^([^=\s]+)\s*=\s*(.*)$/,
        multiline: /[^\\]\\$/,
        index: /\{\[\s*(\w+)(?:\(([^\)]*)\))?\s*\]\}/i,
        unicode: /\\u([0-9a-fA-F]{1,4})/g,
        entries: /[^\r\n]+/g,
        controlChars: /\\([\\\n\r\t\b\f\{\}\"\'])/g,
        placeables: /\{\{\s*([^\s]*?)\s*\}\}/
      };

    },

  
    parse: function (emit, source) {
      if (!this.patterns) {
        this.init();

      }

      this.emit = emit;
  
      var entries = {};
  
      var lines = source.match(this.patterns.entries);
      if (!lines) {
        return entries;

      }

      for (var i = 0; i < lines.length; i++) {
        var line = lines[i];
  
        if (this.patterns.comment.test(line)) {
          continue;
        }
  
        while (this.patterns.multiline.test(line) && i < lines.length) {
          line = line.slice(0, -1) + lines[++i].trim();
        }
  
        var entityMatch = line.match(this.patterns.entity);
        if (entityMatch) {
          try {
            this.parseEntity(entityMatch[1], entityMatch[2], entries);
          } catch (e) {
            if (!this.emit) {
              throw e;
            }
          }
        }

      }

      return entries;

    },

  
    parseEntity: function (id, value, entries) {
      var name, key;
  
      var pos = id.indexOf('[');
      if (pos !== -1) {
        name = id.substr(0, pos);
        key = id.substring(pos + 1, id.length - 1);
      } else {
        name = id;
        key = null;

      }

  
      var nameElements = name.split('.');
  
      if (nameElements.length > 2) {
        throw this.error('Error in ID: "' + name + '".' + ' Nested attributes are not supported.');

      }

  
      var attr;
      if (nameElements.length > 1) {
        name = nameElements[0];
        attr = nameElements[1];
  
        if (attr[0] === '$') {
          throw this.error('Attribute can\'t start with "$"');
        }
      } else {
        attr = null;

      }

  
      this.setEntityValue(name, attr, key, this.unescapeString(value), entries);

    },

  
    setEntityValue: function (id, attr, key, rawValue, entries) {
      var value = rawValue.indexOf('{{') > -1 ? this.parseString(rawValue) : rawValue;
  
      var isSimpleValue = typeof value === 'string';
      var root = entries;
  
      var isSimpleNode = typeof entries[id] === 'string';
  
      if (!entries[id] && (attr || key || !isSimpleValue)) {
        entries[id] = Object.create(null);
        isSimpleNode = false;

      }

  
      if (attr) {
        if (isSimpleNode) {
          var val = entries[id];
          entries[id] = Object.create(null);
          entries[id].value = val;
        }
        if (!entries[id].attrs) {
          entries[id].attrs = Object.create(null);
        }
        if (!entries[id].attrs && !isSimpleValue) {
          entries[id].attrs[attr] = Object.create(null);
        }
        root = entries[id].attrs;
        id = attr;

      }

  
      if (key) {
        isSimpleNode = false;
        if (typeof root[id] === 'string') {
          var val = root[id];
          root[id] = Object.create(null);
          root[id].index = this.parseIndex(val);
          root[id].value = Object.create(null);
        }
        root = root[id].value;
        id = key;
        isSimpleValue = true;

      }

  
      if (isSimpleValue && (!entries[id] || isSimpleNode)) {
        if (id in root) {
          throw this.error();
        }
        root[id] = value;
      } else {
        if (!root[id]) {
          root[id] = Object.create(null);
        }
        root[id].value = value;

      }

    },

  
    parseString: function (str) {
      var chunks = str.split(this.patterns.placeables);
      var complexStr = [];
  
      var len = chunks.length;
      var placeablesCount = (len - 1) / 2;
  
      if (placeablesCount >= MAX_PLACEABLES) {
        throw this.error('Too many placeables (' + placeablesCount + ', max allowed is ' + MAX_PLACEABLES + ')');

      }

  
      for (var i = 0; i < chunks.length; i++) {
        if (chunks[i].length === 0) {
          continue;
        }
        if (i % 2 === 1) {
          complexStr.push({ type: 'idOrVar', name: chunks[i] });
        } else {
          complexStr.push(chunks[i]);
        }

      }

      return complexStr;

    },

  
    unescapeString: function (str) {
      if (str.lastIndexOf('\\') !== -1) {
        str = str.replace(this.patterns.controlChars, '$1');

      }

      return str.replace(this.patterns.unicode, function (match, token) {
        return String.fromCodePoint(parseInt(token, 16));
      });

    },

  
    parseIndex: function (str) {
      var match = str.match(this.patterns.index);
      if (!match) {
        throw new L10nError('Malformed index');

      }

      if (match[2]) {
        return [{
          type: 'call',
          expr: {
            type: 'prop',
            expr: {
              type: 'glob',
              name: 'cldr'
            },
            prop: 'plural',
            cmpt: false
          }, args: [{
            type: 'idOrVar',
            name: match[2]
          }]
        }];
      } else {
        return [{ type: 'idOrVar', name: match[1] }];

      }

    },

  
    error: function (msg) {
      var type = arguments.length <= 1 || arguments[1] === undefined ? 'parsererror' : arguments[1];
  
      var err = new L10nError(msg);
      if (this.emit) {
        this.emit(type, err);

      }

      return err;
    }
  };
  
  var KNOWN_MACROS = ['plural'];
  var MAX_PLACEABLE_LENGTH = 2500;
  
  var FSI = '⁨';
  var PDI = '⁩';
  
  var resolutionChain = new WeakSet();
  
  function format(ctx, lang, args, entity) {
    if (typeof entity === 'string') {
      return [{}, entity];
    }
  
    if (resolutionChain.has(entity)) {
      throw new L10nError('Cyclic reference detected');
    }
  
    resolutionChain.add(entity);
  
    var rv = undefined;
  
    try {
      rv = resolveValue({}, ctx, lang, args, entity.value, entity.index);
    } finally {
      resolutionChain.delete(entity);
    }
    return rv;
  }
  
  function resolveIdentifier(ctx, lang, args, id) {
    if (KNOWN_MACROS.indexOf(id) > -1) {
      return [{}, ctx._getMacro(lang, id)];
    }
  
    if (args && args.hasOwnProperty(id)) {
      if (typeof args[id] === 'string' || typeof args[id] === 'number' && !isNaN(args[id])) {
        return [{}, args[id]];
      } else {
        throw new L10nError('Arg must be a string or a number: ' + id);

      }

    }
  
    if (id === '__proto__') {
      throw new L10nError('Illegal id: ' + id);
    }
  
    var entity = ctx._getEntity(lang, id);
  
    if (entity) {
      return format(ctx, lang, args, entity);
    }
  
    throw new L10nError('Unknown reference: ' + id);
  }
  
  function subPlaceable(locals, ctx, lang, args, id) {
    var newLocals = undefined,
        value = undefined;
  
    try {
      var _resolveIdentifier = resolveIdentifier(ctx, lang, args, id);
  
      newLocals = _resolveIdentifier[0];
      value = _resolveIdentifier[1];
    } catch (err) {
      return [{ error: err }, FSI + '{{ ' + id + ' }}' + PDI];
    }
  
    if (typeof value === 'number') {
      var formatter = ctx._getNumberFormatter(lang);
      return [newLocals, formatter.format(value)];
    }
  
    if (typeof value === 'string') {
      if (value.length >= MAX_PLACEABLE_LENGTH) {
        throw new L10nError('Too many characters in placeable (' + value.length + ', max allowed is ' + MAX_PLACEABLE_LENGTH + ')');

      }

      return [newLocals, FSI + value + PDI];
    }
  
    return [{}, FSI + '{{ ' + id + ' }}' + PDI];
  }
  
  function interpolate(locals, ctx, lang, args, arr) {
    return arr.reduce(function (_ref, cur) {
      var localsSeq = _ref[0];
      var valueSeq = _ref[1];
  
      if (typeof cur === 'string') {
        return [localsSeq, valueSeq + cur];
      } else {
        var _subPlaceable = subPlaceable(locals, ctx, lang, args, cur.name);
  
        var value = _subPlaceable[1];
  
        return [localsSeq, valueSeq + value];

      }

    }, [locals, '']);
  }
  
  function resolveSelector(ctx, lang, args, expr, index) {
    var selectorName = undefined;
    if (index[0].type === 'call' && index[0].expr.type === 'prop' && index[0].expr.expr.name === 'cldr') {
      selectorName = 'plural';
    } else {
      selectorName = index[0].name;
    }
    var selector = resolveIdentifier(ctx, lang, args, selectorName)[1];
  
    if (typeof selector !== 'function') {
      return selector;
    }
  
    var argValue = index[0].args ? resolveIdentifier(ctx, lang, args, index[0].args[0].name)[1] : undefined;
  
    if (selectorName === 'plural') {
      if (argValue === 0 && 'zero' in expr) {

        return 'zero';
      }

      if (argValue === 1 && 'one' in expr) {

        return 'one';
      }