@hola.org/emailjs-addressparser
Version:
Parse rfc2822 address fields
305 lines (266 loc) • 25.4 kB
JavaScript
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { 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); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
exports.default = parse;
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
/**
* Parses structured e-mail addresses from an address field
*
* Example:
*
* "Name <address@domain>"
*
* will be converted to
*
* [{name: "Name", address: "address@domain"}]
*
* @param {String} str Address field
* @return {Array} An array of address objects
*/
function parse(str) {
var tokenizer = new Tokenizer(str);
var tokens = tokenizer.tokenize();
var addresses = [];
var address = [];
var parsedAddresses = [];
tokens.forEach(function (token) {
if (token.type === 'operator' && (token.value === ',' || token.value === ';')) {
if (address.length) {
addresses.push(address);
}
address = [];
} else {
address.push(token);
}
});
if (address.length) {
addresses.push(address);
}
addresses.forEach(function (address) {
address = _handleAddress(address);
if (address.length) {
parsedAddresses = parsedAddresses.concat(address);
}
});
return parsedAddresses;
};
/**
* Converts tokens for a single address into an address object
*
* @param {Array} tokens Tokens object
* @return {Object} Address object
*/
function _handleAddress(tokens) {
var isGroup = false;
var state = 'text';
var address = void 0;
var addresses = [];
var data = {
address: [],
comment: [],
group: [],
text: []
// Filter out <addresses>, (comments) and regular text
};for (var i = 0, len = tokens.length; i < len; i++) {
var token = tokens[i];
if (token.type === 'operator') {
switch (token.value) {
case '<':
state = 'address';
break;
case '(':
state = 'comment';
break;
case ':':
state = 'group';
isGroup = true;
break;
default:
state = 'text';
}
} else {
if (token.value) {
data[state].push(token.value);
}
}
}
// If there is no text but a comment, replace the two
if (!data.text.length && data.comment.length) {
data.text = data.comment;
data.comment = [];
}
if (isGroup) {
// http://tools.ietf.org/html/rfc2822#appendix-A.1.3
data.text = data.text.join(' ');
addresses.push({
name: data.text || address && address.name,
group: data.group.length ? parse(data.group.join(',')) : []
});
} else {
// If no address was found, try to detect one from regular text
if (!data.address.length && data.text.length) {
for (var _i = data.text.length - 1; _i >= 0; _i--) {
if (data.text[_i].match(/^[^@\s]+@[^@\s]+$/)) {
data.address = data.text.splice(_i, 1);
break;
}
}
var _regexHandler = function _regexHandler(address) {
if (!data.address.length) {
data.address = [address.trim()];
return ' ';
} else {
return address;
}
};
// still no address
if (!data.address.length) {
for (var _i2 = data.text.length - 1; _i2 >= 0; _i2--) {
data.text[_i2] = data.text[_i2].replace(/\s*\b[^@\s]+@[^@\s]+\b\s*/, _regexHandler).trim();
if (data.address.length) {
break;
}
}
}
}
// If there's still is no text but a comment exixts, replace the two
if (!data.text.length && data.comment.length) {
data.text = data.comment;
data.comment = [];
}
// Keep only the first address occurence, push others to regular text
if (data.address.length > 1) {
data.text = data.text.concat(data.address.splice(1));
}
// Join values with spaces
data.text = data.text.join(' ');
data.address = data.address.join(' ');
if (!data.address && isGroup) {
return [];
} else {
address = {
address: data.address || data.text || '',
name: data.text || data.address || ''
};
if (address.address === address.name) {
if ((address.address || '').match(/@/)) {
address.name = '';
} else {
address.address = '';
}
}
addresses.push(address);
}
}
return addresses;
};
/*
* Operator tokens and which tokens are expected to end the sequence
*/
var OPERATORS = {
'"': '"',
'(': ')',
'<': '>',
',': '',
// Groups are ended by semicolons
':': ';',
// Semicolons are not a legal delimiter per the RFC2822 grammar other
// than for terminating a group, but they are also not valid for any
// other use in this context. Given that some mail clients have
// historically allowed the semicolon as a delimiter equivalent to the
// comma in their UI, it makes sense to treat them the same as a comma
// when used outside of a group.
';': ''
/**
* Creates a Tokenizer object for tokenizing address field strings
*
* @constructor
* @param {String} str Address field string
*/
};
var Tokenizer = function () {
function Tokenizer(str) {
_classCallCheck(this, Tokenizer);
this.str = (str || '').toString();
this.operatorCurrent = '';
this.operatorExpecting = '';
this.node = null;
this.escaped = false;
this.list = [];
}
/**
* Tokenizes the original input string
*
* @return {Array} An array of operator|text tokens
*/
_createClass(Tokenizer, [{
key: 'tokenize',
value: function tokenize() {
var chr = void 0;
var list = [];
for (var i = 0, len = this.str.length; i < len; i++) {
chr = this.str.charAt(i);
this.checkChar(chr);
}
this.list.forEach(function (node) {
node.value = (node.value || '').toString().trim();
if (node.value) {
list.push(node);
}
});
return list;
}
/**
* Checks if a character is an operator or text and acts accordingly
*
* @param {String} chr Character from the address field
*/
}, {
key: 'checkChar',
value: function checkChar(chr) {
if ((chr in OPERATORS || chr === '\\') && this.escaped) {
this.escaped = false;
} else if (this.operatorExpecting && chr === this.operatorExpecting) {
this.node = {
type: 'operator',
value: chr
};
this.list.push(this.node);
this.node = null;
this.operatorExpecting = '';
this.escaped = false;
return;
} else if (!this.operatorExpecting && chr in OPERATORS) {
this.node = {
type: 'operator',
value: chr
};
this.list.push(this.node);
this.node = null;
this.operatorExpecting = OPERATORS[chr];
this.escaped = false;
return;
}
if (!this.escaped && chr === '\\') {
this.escaped = true;
return;
}
if (!this.node) {
this.node = {
type: 'text',
value: ''
};
this.list.push(this.node);
}
if (this.escaped && chr !== '\\') {
this.node.value += '\\';
}
this.node.value += chr;
this.escaped = false;
}
}]);
return Tokenizer;
}();
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* Parses structured e-mail addresses from an address field\n *\n * Example:\n *\n *    \"Name <address@domain>\"\n *\n * will be converted to\n *\n *     [{name: \"Name\", address: \"address@domain\"}]\n *\n * @param {String} str Address field\n * @return {Array} An array of address objects\n */\nexport default function parse (str) {\n  const tokenizer = new Tokenizer(str)\n  const tokens = tokenizer.tokenize()\n\n  const addresses = []\n  let address = []\n  let parsedAddresses = []\n\n  tokens.forEach(function (token) {\n    if (token.type === 'operator' && (token.value === ',' || token.value === ';')) {\n      if (address.length) {\n        addresses.push(address)\n      }\n      address = []\n    } else {\n      address.push(token)\n    }\n  })\n\n  if (address.length) {\n    addresses.push(address)\n  }\n\n  addresses.forEach(function (address) {\n    address = _handleAddress(address)\n    if (address.length) {\n      parsedAddresses = parsedAddresses.concat(address)\n    }\n  })\n\n  return parsedAddresses\n};\n\n/**\n * Converts tokens for a single address into an address object\n *\n * @param {Array} tokens Tokens object\n * @return {Object} Address object\n */\nfunction _handleAddress (tokens) {\n  let isGroup = false\n  let state = 'text'\n  let address\n  const addresses = []\n  const data = {\n    address: [],\n    comment: [],\n    group: [],\n    text: []\n  }\n\n  // Filter out <addresses>, (comments) and regular text\n  for (let i = 0, len = tokens.length; i < len; i++) {\n    const token = tokens[i]\n\n    if (token.type === 'operator') {\n      switch (token.value) {\n        case '<':\n          state = 'address'\n          break\n        case '(':\n          state = 'comment'\n          break\n        case ':':\n          state = 'group'\n          isGroup = true\n          break\n        default:\n          state = 'text'\n      }\n    } else {\n      if (token.value) {\n        data[state].push(token.value)\n      }\n    }\n  }\n\n  // If there is no text but a comment, replace the two\n  if (!data.text.length && data.comment.length) {\n    data.text = data.comment\n    data.comment = []\n  }\n\n  if (isGroup) {\n    // http://tools.ietf.org/html/rfc2822#appendix-A.1.3\n    data.text = data.text.join(' ')\n    addresses.push({\n      name: data.text || (address && address.name),\n      group: data.group.length ? parse(data.group.join(',')) : []\n    })\n  } else {\n    // If no address was found, try to detect one from regular text\n    if (!data.address.length && data.text.length) {\n      for (let i = data.text.length - 1; i >= 0; i--) {\n        if (data.text[i].match(/^[^@\\s]+@[^@\\s]+$/)) {\n          data.address = data.text.splice(i, 1)\n          break\n        }\n      }\n\n      var _regexHandler = function (address) {\n        if (!data.address.length) {\n          data.address = [address.trim()]\n          return ' '\n        } else {\n          return address\n        }\n      }\n\n      // still no address\n      if (!data.address.length) {\n        for (let i = data.text.length - 1; i >= 0; i--) {\n          data.text[i] = data.text[i].replace(/\\s*\\b[^@\\s]+@[^@\\s]+\\b\\s*/, _regexHandler).trim()\n          if (data.address.length) {\n            break\n          }\n        }\n      }\n    }\n\n    // If there's still is no text but a comment exixts, replace the two\n    if (!data.text.length && data.comment.length) {\n      data.text = data.comment\n      data.comment = []\n    }\n\n    // Keep only the first address occurence, push others to regular text\n    if (data.address.length > 1) {\n      data.text = data.text.concat(data.address.splice(1))\n    }\n\n    // Join values with spaces\n    data.text = data.text.join(' ')\n    data.address = data.address.join(' ')\n\n    if (!data.address && isGroup) {\n      return []\n    } else {\n      address = {\n        address: data.address || data.text || '',\n        name: data.text || data.address || ''\n      }\n\n      if (address.address === address.name) {\n        if ((address.address || '').match(/@/)) {\n          address.name = ''\n        } else {\n          address.address = ''\n        }\n      }\n\n      addresses.push(address)\n    }\n  }\n\n  return addresses\n};\n\n/*\n * Operator tokens and which tokens are expected to end the sequence\n */\nconst OPERATORS = {\n  '\"': '\"',\n  '(': ')',\n  '<': '>',\n  ',': '',\n  // Groups are ended by semicolons\n  ':': ';',\n  // Semicolons are not a legal delimiter per the RFC2822 grammar other\n  // than for terminating a group, but they are also not valid for any\n  // other use in this context.  Given that some mail clients have\n  // historically allowed the semicolon as a delimiter equivalent to the\n  // comma in their UI, it makes sense to treat them the same as a comma\n  // when used outside of a group.\n  ';': ''\n}\n\n/**\n * Creates a Tokenizer object for tokenizing address field strings\n *\n * @constructor\n * @param {String} str Address field string\n */\nclass Tokenizer {\n  constructor (str) {\n    this.str = (str || '').toString()\n    this.operatorCurrent = ''\n    this.operatorExpecting = ''\n    this.node = null\n    this.escaped = false\n    this.list = []\n  }\n\n  /**\n   * Tokenizes the original input string\n   *\n   * @return {Array} An array of operator|text tokens\n   */\n  tokenize () {\n    let chr\n    let list = []\n    for (var i = 0, len = this.str.length; i < len; i++) {\n      chr = this.str.charAt(i)\n      this.checkChar(chr)\n    }\n\n    this.list.forEach(function (node) {\n      node.value = (node.value || '').toString().trim()\n      if (node.value) {\n        list.push(node)\n      }\n    })\n\n    return list\n  }\n\n  /**\n   * Checks if a character is an operator or text and acts accordingly\n   *\n   * @param {String} chr Character from the address field\n   */\n  checkChar (chr) {\n    if ((chr in OPERATORS || chr === '\\\\') && this.escaped) {\n      this.escaped = false\n    } else if (this.operatorExpecting && chr === this.operatorExpecting) {\n      this.node = {\n        type: 'operator',\n        value: chr\n      }\n      this.list.push(this.node)\n      this.node = null\n      this.operatorExpecting = ''\n      this.escaped = false\n      return\n    } else if (!this.operatorExpecting && chr in OPERATORS) {\n      this.node = {\n        type: 'operator',\n        value: chr\n      }\n      this.list.push(this.node)\n      this.node = null\n      this.operatorExpecting = OPERATORS[chr]\n      this.escaped = false\n      return\n    }\n\n    if (!this.escaped && chr === '\\\\') {\n      this.escaped = true\n      return\n    }\n\n    if (!this.node) {\n      this.node = {\n        type: 'text',\n        value: ''\n      }\n      this.list.push(this.node)\n    }\n\n    if (this.escaped && chr !== '\\\\') {\n      this.node.value += '\\\\'\n    }\n\n    this.node.value += chr\n    this.escaped = false\n  }\n}\n"]}