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✏️ Editing: attribute.js

"use strict";

exports.__esModule = true;
exports["default"] = void 0;
exports.unescapeValue = unescapeValue;
var _cssesc = _interopRequireDefault(require("cssesc"));
var _unesc = _interopRequireDefault(require("../util/unesc"));
var _namespace = _interopRequireDefault(require("./namespace"));
var _types = require("./types");
var _CSSESC_QUOTE_OPTIONS;
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); Object.defineProperty(Constructor, "prototype", { writable: false }); return Constructor; }
function _inheritsLoose(subClass, superClass) { subClass.prototype = Object.create(superClass.prototype); subClass.prototype.constructor = subClass; _setPrototypeOf(subClass, superClass); }
function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf ? Object.setPrototypeOf.bind() : function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
var deprecate = require("util-deprecate");
var WRAPPED_IN_QUOTES = /^('|")([^]*)\1$/;
var warnOfDeprecatedValueAssignment = deprecate(function () {}, "Assigning an attribute a value containing characters that might need to be escaped is deprecated. " + "Call attribute.setValue() instead.");
var warnOfDeprecatedQuotedAssignment = deprecate(function () {}, "Assigning attr.quoted is deprecated and has no effect. Assign to attr.quoteMark instead.");
var warnOfDeprecatedConstructor = deprecate(function () {}, "Constructing an Attribute selector with a value without specifying quoteMark is deprecated. Note: The value should be unescaped now.");
function unescapeValue(value) {
  var deprecatedUsage = false;
  var quoteMark = null;
  var unescaped = value;
  var m = unescaped.match(WRAPPED_IN_QUOTES);
  if (m) {
    quoteMark = m[1];
    unescaped = m[2];
  }
  unescaped = (0, _unesc["default"])(unescaped);
  if (unescaped !== value) {
    deprecatedUsage = true;
  }
  return {
    deprecatedUsage: deprecatedUsage,
    unescaped: unescaped,
    quoteMark: quoteMark
  };
}
function handleDeprecatedContructorOpts(opts) {
  if (opts.quoteMark !== undefined) {
    return opts;
  }
  if (opts.value === undefined) {
    return opts;
  }
  warnOfDeprecatedConstructor();
  var _unescapeValue = unescapeValue(opts.value),
    quoteMark = _unescapeValue.quoteMark,
    unescaped = _unescapeValue.unescaped;
  if (!opts.raws) {
    opts.raws = {};
  }
  if (opts.raws.value === undefined) {
    opts.raws.value = opts.value;
  }
  opts.value = unescaped;
  opts.quoteMark = quoteMark;
  return opts;
}
var Attribute = /*#__PURE__*/function (_Namespace) {
  _inheritsLoose(Attribute, _Namespace);
  function Attribute(opts) {
    var _this;
    if (opts === void 0) {
      opts = {};
    }
    _this = _Namespace.call(this, handleDeprecatedContructorOpts(opts)) || this;
    _this.type = _types.ATTRIBUTE;
    _this.raws = _this.raws || {};
    Object.defineProperty(_this.raws, 'unquoted', {
      get: deprecate(function () {
        return _this.value;
      }, "attr.raws.unquoted is deprecated. Call attr.value instead."),
      set: deprecate(function () {
        return _this.value;
      }, "Setting attr.raws.unquoted is deprecated and has no effect. attr.value is unescaped by default now.")
    });
    _this._constructed = true;
    return _this;
  }

/**
   * Returns the Attribute's value quoted such that it would be legal to use
   * in the value of a css file. The original value's quotation setting
   * used for stringification is left unchanged. See `setValue(value, options)`
   * if you want to control the quote settings of a new value for the attribute.
   *
   * You can also change the quotation used for the current value by setting quoteMark.
   *
   * Options:
   *   * quoteMark {'"' | "'" | null} - Use this value to quote the value. If this
   *     option is not set, the original value for quoteMark will be used. If
   *     indeterminate, a double quote is used. The legal values are:
   *     * `null` - the value will be unquoted and characters will be escaped as necessary.
   *     * `'` - the value will be quoted with a single quote and single quotes are escaped.
   *     * `"` - the value will be quoted with a double quote and double quotes are escaped.
   *   * preferCurrentQuoteMark {boolean} - if true, prefer the source quote mark
   *     over the quoteMark option value.
   *   * smart {boolean} - if true, will select a quote mark based on the value
   *     and the other options specified here. See the `smartQuoteMark()`
   *     method.
   **/
  var _proto = Attribute.prototype;
  _proto.getQuotedValue = function getQuotedValue(options) {
    if (options === void 0) {
      options = {};
    }
    var quoteMark = this._determineQuoteMark(options);
    var cssescopts = CSSESC_QUOTE_OPTIONS[quoteMark];
    var escaped = (0, _cssesc["default"])(this._value, cssescopts);
    return escaped;
  };
  _proto._determineQuoteMark = function _determineQuoteMark(options) {
    return options.smart ? this.smartQuoteMark(options) : this.preferredQuoteMark(options);
  }

/**
   * Set the unescaped value with the specified quotation options. The value
   * provided must not include any wrapping quote marks -- those quotes will
   * be interpreted as part of the value and escaped accordingly.
   */;
  _proto.setValue = function setValue(value, options) {
    if (options === void 0) {
      options = {};
    }
    this._value = value;
    this._quoteMark = this._determineQuoteMark(options);
    this._syncRawValue();
  }

/**
   * Intelligently select a quoteMark value based on the value's contents. If
   * the value is a legal CSS ident, it will not be quoted. Otherwise a quote
   * mark will be picked that minimizes the number of escapes.
   *
   * If there's no clear winner, the quote mark from these options is used,
   * then the source quote mark (this is inverted if `preferCurrentQuoteMark` is
   * true). If the quoteMark is unspecified, a double quote is used.
   *
   * @param options This takes the quoteMark and preferCurrentQuoteMark options
   * from the quoteValue method.
   */;
  _proto.smartQuoteMark = function smartQuoteMark(options) {
    var v = this.value;
    var numSingleQuotes = v.replace(/[^']/g, '').length;
    var numDoubleQuotes = v.replace(/[^"]/g, '').length;
    if (numSingleQuotes + numDoubleQuotes === 0) {
      var escaped = (0, _cssesc["default"])(v, {
        isIdentifier: true
      });
      if (escaped === v) {
        return Attribute.NO_QUOTE;
      } else {
        var pref = this.preferredQuoteMark(options);
        if (pref === Attribute.NO_QUOTE) {
          // pick a quote mark that isn't none and see if it's smaller
          var quote = this.quoteMark || options.quoteMark || Attribute.DOUBLE_QUOTE;
          var opts = CSSESC_QUOTE_OPTIONS[quote];
          var quoteValue = (0, _cssesc["default"])(v, opts);
          if (quoteValue.length < escaped.length) {
            return quote;
          }
        }
        return pref;
      }
    } else if (numDoubleQuotes === numSingleQuotes) {
      return this.preferredQuoteMark(options);
    } else if (numDoubleQuotes < numSingleQuotes) {
      return Attribute.DOUBLE_QUOTE;
    } else {
      return Attribute.SINGLE_QUOTE;
    }
  }

/**
   * Selects the preferred quote mark based on the options and the current quote mark value.
   * If you want the quote mark to depend on the attribute value, call `smartQuoteMark(opts)`
   * instead.
   */;
  _proto.preferredQuoteMark = function preferredQuoteMark(options) {
    var quoteMark = options.preferCurrentQuoteMark ? this.quoteMark : options.quoteMark;
    if (quoteMark === undefined) {
      quoteMark = options.preferCurrentQuoteMark ? options.quoteMark : this.quoteMark;
    }
    if (quoteMark === undefined) {
      quoteMark = Attribute.DOUBLE_QUOTE;
    }
    return quoteMark;
  };
  _proto._syncRawValue = function _syncRawValue() {
    var rawValue = (0, _cssesc["default"])(this._value, CSSESC_QUOTE_OPTIONS[this.quoteMark]);
    if (rawValue === this._value) {
      if (this.raws) {
        delete this.raws.value;
      }
    } else {
      this.raws.value = rawValue;
    }
  };
  _proto._handleEscapes = function _handleEscapes(prop, value) {
    if (this._constructed) {
      var escaped = (0, _cssesc["default"])(value, {
        isIdentifier: true
      });
      if (escaped !== value) {
        this.raws[prop] = escaped;
      } else {
        delete this.raws[prop];
      }
    }
  };
  _proto._spacesFor = function _spacesFor(name) {
    var attrSpaces = {
      before: '',
      after: ''
    };
    var spaces = this.spaces[name] || {};
    var rawSpaces = this.raws.spaces && this.raws.spaces[name] || {};
    return Object.assign(attrSpaces, spaces, rawSpaces);
  };
  _proto._stringFor = function _stringFor(name, spaceName, concat) {
    if (spaceName === void 0) {
      spaceName = name;
    }
    if (concat === void 0) {
      concat = defaultAttrConcat;
    }
    var attrSpaces = this._spacesFor(spaceName);
    return concat(this.stringifyProperty(name), attrSpaces);
  }

/**
   * returns the offset of the attribute part specified relative to the
   * start of the node of the output string.
   *
   * * "ns" - alias for "namespace"
   * * "namespace" - the namespace if it exists.
   * * "attribute" - the attribute name
   * * "attributeNS" - the start of the attribute or its namespace
   * * "operator" - the match operator of the attribute
   * * "value" - The value (string or identifier)
   * * "insensitive" - the case insensitivity flag;
   * @param part One of the possible values inside an attribute.
   * @returns -1 if the name is invalid or the value doesn't exist in this attribute.
   */;
  _proto.offsetOf = function offsetOf(name) {
    var count = 1;
    var attributeSpaces = this._spacesFor("attribute");
    count += attributeSpaces.before.length;
    if (name === "namespace" || name === "ns") {
      return this.namespace ? count : -1;
    }
    if (name === "attributeNS") {
      return count;
    }
    count += this.namespaceString.length;
    if (this.namespace) {
      count += 1;
    }
    if (name === "attribute") {
      return count;
    }
    count += this.stringifyProperty("attribute").length;
    count += attributeSpaces.after.length;
    var operatorSpaces = this._spacesFor("operator");
    count += operatorSpaces.before.length;
    var operator = this.stringifyProperty("operator");
    if (name === "operator") {
      return operator ? count : -1;
    }
    count += operator.length;
    count += operatorSpaces.after.length;
    var valueSpaces = this._spacesFor("value");
    count += valueSpaces.before.length;
    var value = this.stringifyProperty("value");
    if (name === "value") {
      return value ? count : -1;
    }
    count += value.length;
    count += valueSpaces.after.length;
    var insensitiveSpaces = this._spacesFor("insensitive");
    count += insensitiveSpaces.before.length;
    if (name === "insensitive") {
      return this.insensitive ? count : -1;
    }
    return -1;
  };
  _proto.toString = function toString() {
    var _this2 = this;
    var selector = [this.rawSpaceBefore, '['];
    selector.push(this._stringFor('qualifiedAttribute', 'attribute'));
    if (this.operator && (this.value || this.value === '')) {
      selector.push(this._stringFor('operator'));
      selector.push(this._stringFor('value'));
      selector.push(this._stringFor('insensitiveFlag', 'insensitive', function (attrValue, attrSpaces) {
        if (attrValue.length > 0 && !_this2.quoted && attrSpaces.before.length === 0 && !(_this2.spaces.value && _this2.spaces.value.after)) {
          attrSpaces.before = " ";
        }
        return defaultAttrConcat(attrValue, attrSpaces);
      }));
    }
    selector.push(']');
    selector.push(this.rawSpaceAfter);
    return selector.join('');
  };
  _createClass(Attribute, [{
    key: "quoted",
    get: function get() {
      var qm = this.quoteMark;
      return qm === "'" || qm === '"';
    },
    set: function set(value) {
      warnOfDeprecatedQuotedAssignment();
    }

/**
     * returns a single (`'`) or double (`"`) quote character if the value is quoted.
     * returns `null` if the value is not quoted.
     * returns `undefined` if the quotation state is unknown (this can happen when
     * the attribute is constructed without specifying a quote mark.)
     */
  }, {
    key: "quoteMark",
    get: function get() {
      return this._quoteMark;
    }

/**
     * Set the quote mark to be used by this attribute's value.
     * If the quote mark changes, the raw (escaped) value at `attr.raws.value` of the attribute
     * value is updated accordingly.
     *
     * @param {"'" | '"' | null} quoteMark The quote mark or `null` if the value should be unquoted.
     */,
    set: function set(quoteMark) {
      if (!this._constructed) {
        this._quoteMark = quoteMark;
        return;
      }
      if (this._quoteMark !== quoteMark) {
        this._quoteMark = quoteMark;
        this._syncRawValue();
      }
    }
  }, {
    key: "qualifiedAttribute",
    get: function get() {
      return this.qualifiedName(this.raws.attribute || this.attribute);
    }
  }, {
    key: "insensitiveFlag",
    get: function get() {
      return this.insensitive ? 'i' : '';
    }
  }, {
    key: "value",
    get: function get() {
      return this._value;
    },
    set:
    /**
     * Before 3.0, the value had to be set to an escaped value including any wrapped
     * quote marks. In 3.0, the semantics of `Attribute.value` changed so that the value
     * is unescaped during parsing and any quote marks are removed.
     *
     * Because the ambiguity of this semantic change, if you set `attr.value = newValue`,
     * a deprecation warning is raised when the new value contains any characters that would
     * require escaping (including if it contains wrapped quotes).
     *
     * Instead, you should call `attr.setValue(newValue, opts)` and pass options that describe
     * how the new value is quoted.
     */
    function set(v) {
      if (this._constructed) {
        var _unescapeValue2 = unescapeValue(v),
          deprecatedUsage = _unescapeValue2.deprecatedUsage,
          unescaped = _unescapeValue2.unescaped,
          quoteMark = _unescapeValue2.quoteMark;
        if (deprecatedUsage) {
          warnOfDeprecatedValueAssignment();
        }
        if (unescaped === this._value && quoteMark === this._quoteMark) {
          return;
        }
        this._value = unescaped;
        this._quoteMark = quoteMark;
        this._syncRawValue();
      } else {
        this._value = v;
      }
    }
  }, {
    key: "insensitive",
    get: function get() {
      return this._insensitive;
    }

/**
     * Set the case insensitive flag.
     * If the case insensitive flag changes, the raw (escaped) value at `attr.raws.insensitiveFlag`
     * of the attribute is updated accordingly.
     *
     * @param {true | false} insensitive true if the attribute should match case-insensitively.
     */,
    set: function set(insensitive) {
      if (!insensitive) {
        this._insensitive = false;

// "i" and "I" can be used in "this.raws.insensitiveFlag" to store the original notation.
        // When setting `attr.insensitive = false` both should be erased to ensure correct serialization.
        if (this.raws && (this.raws.insensitiveFlag === 'I' || this.raws.insensitiveFlag === 'i')) {
          this.raws.insensitiveFlag = undefined;
        }
      }
      this._insensitive = insensitive;
    }
  }, {
    key: "attribute",
    get: function get() {
      return this._attribute;
    },
    set: function set(name) {
      this._handleEscapes("attribute", name);
      this._attribute = name;
    }
  }]);
  return Attribute;
}(_namespace["default"]);
exports["default"] = Attribute;
Attribute.NO_QUOTE = null;
Attribute.SINGLE_QUOTE = "'";
Attribute.DOUBLE_QUOTE = '"';
var CSSESC_QUOTE_OPTIONS = (_CSSESC_QUOTE_OPTIONS = {
  "'": {
    quotes: 'single',
    wrap: true
  },
  '"': {
    quotes: 'double',
    wrap: true
  }
}, _CSSESC_QUOTE_OPTIONS[null] = {
  isIdentifier: true
}, _CSSESC_QUOTE_OPTIONS);
function defaultAttrConcat(attrValue, attrSpaces) {
  return "" + attrSpaces.before + attrValue + attrSpaces.after;
}

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