mirror of
https://github.com/nodemailer/wildduck.git
synced 2025-01-08 17:07:44 +08:00
790 lines
26 KiB
JavaScript
790 lines
26 KiB
JavaScript
'use strict';
|
||
|
||
const stream = require('stream');
|
||
const PassThrough = stream.PassThrough;
|
||
const linkify = require('linkify-it')();
|
||
const BodyStructure = require('./body-structure');
|
||
const createEnvelope = require('./create-envelope');
|
||
const parseMimeTree = require('./parse-mime-tree');
|
||
const libmime = require('libmime');
|
||
const libqp = require('libqp');
|
||
const libbase64 = require('libbase64');
|
||
const iconv = require('iconv-lite');
|
||
const he = require('he');
|
||
const tlds = require('tlds');
|
||
const htmlToText = require('html-to-text');
|
||
const crypto = require('crypto');
|
||
|
||
linkify
|
||
.tlds(tlds) // Reload with full tlds list
|
||
.tlds('onion', true) // Add unofficial `.onion` domain
|
||
.add('git:', 'http:') // Add `git:` ptotocol as "alias"
|
||
.add('ftp:', null) // Disable `ftp:` ptotocol
|
||
.set({ fuzzyIP: true });
|
||
|
||
class Indexer {
|
||
constructor(options) {
|
||
this.options = options || {};
|
||
this.fetchOptions = this.options.fetchOptions || {};
|
||
|
||
this.attachmentStorage = this.options.attachmentStorage;
|
||
|
||
// create logger
|
||
this.logger = this.options.logger || {
|
||
info: () => false,
|
||
debug: () => false,
|
||
error: () => false
|
||
};
|
||
}
|
||
|
||
/**
|
||
* Returns expected size for a node
|
||
*
|
||
* @param {Object} mimeTree Parsed mimeTree object (or sub node)
|
||
* @param {Boolean} textOnly If true, do not include the message header in the response
|
||
* @return {String} Expected message size
|
||
*/
|
||
getSize(mimeTree, textOnly) {
|
||
let size = 0;
|
||
let first = true;
|
||
let root = true;
|
||
|
||
// make sure that mixed body + mime gets rebuilt correctly
|
||
let append = (data, force) => {
|
||
if (Array.isArray(data)) {
|
||
data = data.join('\r\n');
|
||
}
|
||
if (data || force) {
|
||
size += Buffer.byteLength((first ? '' : '\r\n') + (data || ''), 'binary');
|
||
first = false;
|
||
}
|
||
};
|
||
|
||
let walk = (node, next) => {
|
||
if (!textOnly || !root) {
|
||
append(formatHeaders(node.header).join('\r\n') + '\r\n');
|
||
}
|
||
|
||
let finalize = () => {
|
||
if (node.boundary) {
|
||
append('--' + node.boundary + '--\r\n');
|
||
}
|
||
|
||
append();
|
||
next();
|
||
};
|
||
|
||
root = false;
|
||
if (node.size || node.attachmentId) {
|
||
if (!node.boundary) {
|
||
append(false, true); // force newline
|
||
}
|
||
size += node.size;
|
||
}
|
||
|
||
if (node.boundary) {
|
||
append('--' + node.boundary);
|
||
}
|
||
|
||
if (Array.isArray(node.childNodes)) {
|
||
let pos = 0;
|
||
let processChildNodes = () => {
|
||
if (pos >= node.childNodes.length) {
|
||
return finalize();
|
||
}
|
||
let childNode = node.childNodes[pos++];
|
||
walk(childNode, () => {
|
||
if (pos < node.childNodes.length) {
|
||
append('--' + node.boundary);
|
||
}
|
||
return processChildNodes();
|
||
});
|
||
};
|
||
processChildNodes();
|
||
} else {
|
||
finalize();
|
||
}
|
||
};
|
||
|
||
walk(mimeTree, () => false);
|
||
|
||
return size;
|
||
}
|
||
|
||
/**
|
||
* Builds a parsed mime tree into a rfc822 message
|
||
*
|
||
* @param {Object} mimeTree Parsed mimeTree object
|
||
* @param {Boolean} textOnly If true, do not include the message header in the response
|
||
* @param {Boolean} skipExternal If true, do not include the external nodes
|
||
* @return {Stream} Message stream
|
||
*/
|
||
rebuild(mimeTree, textOnly, skipExternal) {
|
||
let res = new PassThrough();
|
||
let first = true;
|
||
let root = true;
|
||
let remainder = false;
|
||
|
||
let aborted = false;
|
||
|
||
// make sure that mixed body + mime gets rebuilt correctly
|
||
let append = (data, force) => {
|
||
if (Array.isArray(data)) {
|
||
data = data.join('\r\n');
|
||
}
|
||
if (remainder || data || force) {
|
||
if (!first) {
|
||
res.write('\r\n');
|
||
} else {
|
||
first = false;
|
||
}
|
||
|
||
if (remainder && remainder.length) {
|
||
res.write(remainder);
|
||
}
|
||
|
||
if (data) {
|
||
res.write(Buffer.from(data, 'binary'));
|
||
}
|
||
}
|
||
remainder = false;
|
||
};
|
||
|
||
let walk = (node, next) => {
|
||
if (aborted) {
|
||
return next();
|
||
}
|
||
|
||
if (!textOnly || !root) {
|
||
append(formatHeaders(node.header).join('\r\n') + '\r\n');
|
||
}
|
||
|
||
root = false;
|
||
if (Buffer.isBuffer(node.body)) {
|
||
// node Buffer
|
||
remainder = node.body;
|
||
} else if (node.body && node.body.buffer) {
|
||
// mongodb Binary
|
||
remainder = node.body.buffer;
|
||
} else if (typeof node.body === 'string') {
|
||
// binary string
|
||
remainder = Buffer.from(node.body, 'binary');
|
||
} else {
|
||
// whatever
|
||
remainder = node.body;
|
||
}
|
||
|
||
let finalize = () => {
|
||
if (node.boundary) {
|
||
append('--' + node.boundary + '--\r\n');
|
||
}
|
||
|
||
append();
|
||
next();
|
||
};
|
||
|
||
if (node.boundary) {
|
||
append('--' + node.boundary);
|
||
} else if (node.attachmentId && !skipExternal) {
|
||
append(false, true); // force newline between header and contents
|
||
|
||
let attachmentId = node.attachmentId;
|
||
if (mimeTree.attachmentMap && mimeTree.attachmentMap[node.attachmentId]) {
|
||
attachmentId = mimeTree.attachmentMap[node.attachmentId];
|
||
}
|
||
|
||
return this.attachmentStorage.get(attachmentId, (err, attachmentData) => {
|
||
if (err) {
|
||
return res.emit('error', err);
|
||
}
|
||
|
||
let attachmentStream = this.attachmentStorage.createReadStream(attachmentId, attachmentData);
|
||
|
||
attachmentStream.once('error', err => {
|
||
// res.errored = err;
|
||
res.emit('error', err);
|
||
});
|
||
|
||
attachmentStream.once('end', () => finalize());
|
||
|
||
attachmentStream.pipe(res, {
|
||
end: false
|
||
});
|
||
});
|
||
}
|
||
|
||
let pos = 0;
|
||
let processChildNodes = () => {
|
||
if (pos >= node.childNodes.length) {
|
||
return finalize();
|
||
}
|
||
let childNode = node.childNodes[pos++];
|
||
walk(childNode, () => {
|
||
if (aborted) {
|
||
return next();
|
||
}
|
||
|
||
if (pos < node.childNodes.length) {
|
||
append('--' + node.boundary);
|
||
}
|
||
setImmediate(processChildNodes);
|
||
});
|
||
};
|
||
|
||
if (Array.isArray(node.childNodes)) {
|
||
processChildNodes();
|
||
} else {
|
||
finalize();
|
||
}
|
||
};
|
||
|
||
setImmediate(
|
||
walk.bind(null, mimeTree, () => {
|
||
res.end();
|
||
})
|
||
);
|
||
|
||
// if called then stops resolving rest of the message
|
||
res.abort = () => {
|
||
aborted = true;
|
||
};
|
||
|
||
return {
|
||
type: 'stream',
|
||
value: res,
|
||
expectedLength: this.getSize(mimeTree, textOnly)
|
||
};
|
||
}
|
||
|
||
/**
|
||
* Parses structured MIME tree from a rfc822 message source
|
||
*
|
||
* @param {String|Buffer} rfc822 E-mail message as 'binary'-string or Buffer
|
||
* @return {Object} Parsed mime tree
|
||
*/
|
||
parseMimeTree(rfc822) {
|
||
return parseMimeTree(rfc822);
|
||
}
|
||
|
||
/**
|
||
* Decode text/plain and text/html parts, separate node bodies from the tree
|
||
*/
|
||
getMaildata(messageId, mimeTree) {
|
||
let magic = parseInt(crypto.randomBytes(2).toString('hex'), 16);
|
||
let maildata = {
|
||
nodes: [],
|
||
attachments: [],
|
||
text: '',
|
||
html: [],
|
||
// magic number to append to increment stored attachment object counter
|
||
magic
|
||
};
|
||
|
||
let idcount = 0;
|
||
let htmlContent = [];
|
||
let textContent = [];
|
||
let cidMap = new Map();
|
||
|
||
let walk = (node, alternative, related) => {
|
||
let flowed = false;
|
||
let delSp = false;
|
||
|
||
let parsedContentType = node.parsedHeader['content-type'];
|
||
let parsedDisposition = node.parsedHeader['content-disposition'];
|
||
let transferEncoding = (node.parsedHeader['content-transfer-encoding'] || '7bit').toLowerCase().trim();
|
||
|
||
let contentType = ((parsedContentType && parsedContentType.value) || (node.rootNode ? 'text/plain' : 'application/octet-stream'))
|
||
.toLowerCase()
|
||
.trim();
|
||
|
||
alternative = alternative || contentType === 'multipart/alternative';
|
||
related = related || contentType === 'multipart/related';
|
||
|
||
if (parsedContentType && parsedContentType.params.format && parsedContentType.params.format.toLowerCase().trim() === 'flowed') {
|
||
flowed = true;
|
||
if (parsedContentType.params.delsp && parsedContentType.params.delsp.toLowerCase().trim() === 'yes') {
|
||
delSp = true;
|
||
}
|
||
}
|
||
|
||
let disposition = ((parsedDisposition && parsedDisposition.value) || '').toLowerCase().trim() || false;
|
||
let isInlineText = false;
|
||
let isMultipart = contentType.split('/')[0] === 'multipart';
|
||
|
||
// If the current node is HTML or Plaintext then allow larger content included in the mime tree
|
||
// Also decode text/html value
|
||
if (
|
||
['text/plain', 'text/html', 'text/rfc822-headers', 'message/delivery-status'].includes(contentType) &&
|
||
(!disposition || disposition === 'inline')
|
||
) {
|
||
isInlineText = true;
|
||
if (node.body && node.body.length) {
|
||
let charset = parsedContentType.params.charset || 'windows-1257';
|
||
let content = node.body;
|
||
|
||
if (transferEncoding === 'base64') {
|
||
content = libbase64.decode(content.toString());
|
||
} else if (transferEncoding === 'quoted-printable') {
|
||
content = libqp.decode(content.toString());
|
||
}
|
||
|
||
if (
|
||
!['ascii', 'usascii', 'utf8'].includes(
|
||
charset
|
||
.replace(/[^a-z0-9]+/g, '')
|
||
.trim()
|
||
.toLowerCase()
|
||
)
|
||
) {
|
||
try {
|
||
content = iconv.decode(content, charset);
|
||
} catch (E) {
|
||
// do not decode charset
|
||
}
|
||
}
|
||
|
||
if (flowed) {
|
||
content = libmime.decodeFlowed(content.toString(), delSp);
|
||
} else {
|
||
content = content.toString();
|
||
}
|
||
|
||
if (contentType === 'text/html') {
|
||
htmlContent.push(content.trim());
|
||
if (!alternative) {
|
||
try {
|
||
let text = htmlToText.fromString(content);
|
||
textContent.push(text.trim());
|
||
} catch (E) {
|
||
// ignore
|
||
}
|
||
}
|
||
} else {
|
||
textContent.push(content.trim());
|
||
if (!alternative) {
|
||
htmlContent.push(textToHtml(content));
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
// remove attachments and very large text nodes from the mime tree
|
||
if (!isMultipart && node.body && node.body.length && (!isInlineText || node.size > 300 * 1024)) {
|
||
let attachmentId = 'ATT' + leftPad(++idcount, '0', 5);
|
||
|
||
let fileName =
|
||
(node.parsedHeader['content-disposition'] &&
|
||
node.parsedHeader['content-disposition'].params &&
|
||
node.parsedHeader['content-disposition'].params.filename) ||
|
||
(node.parsedHeader['content-type'] && node.parsedHeader['content-type'].params && node.parsedHeader['content-type'].params.name) ||
|
||
false;
|
||
|
||
let contentId = (node.parsedHeader['content-id'] || '')
|
||
.toString()
|
||
.replace(/<|>/g, '')
|
||
.trim();
|
||
|
||
if (fileName) {
|
||
try {
|
||
fileName = libmime.decodeWords(fileName).trim();
|
||
} catch (E) {
|
||
// failed to parse filename, keep as is (most probably an unknown charset is used)
|
||
}
|
||
} else {
|
||
fileName = crypto.randomBytes(4).toString('hex') + '.' + libmime.detectExtension(contentType);
|
||
}
|
||
|
||
cidMap.set(contentId, {
|
||
id: attachmentId,
|
||
fileName
|
||
});
|
||
|
||
// push to queue
|
||
maildata.nodes.push({
|
||
attachmentId,
|
||
magic: maildata.magic,
|
||
contentType,
|
||
transferEncoding,
|
||
lineCount: node.lineCount,
|
||
body: node.body
|
||
});
|
||
|
||
// do not include text content, multipart elements and embedded messages in the attachment list
|
||
if (!isInlineText && !(contentType === 'message/rfc822' && (!disposition || disposition === 'inline'))) {
|
||
// list in the attachments array
|
||
maildata.attachments.push({
|
||
id: attachmentId,
|
||
fileName,
|
||
contentType,
|
||
disposition,
|
||
transferEncoding,
|
||
related,
|
||
// approximite size in kilobytes
|
||
sizeKb: Math.ceil((transferEncoding === 'base64' ? this.expectedB64Size(node.size) : node.size) / 1024)
|
||
});
|
||
}
|
||
|
||
node.body = false;
|
||
node.attachmentId = attachmentId;
|
||
}
|
||
|
||
// message/rfc822
|
||
if (node.message) {
|
||
node = node.message;
|
||
}
|
||
|
||
if (Array.isArray(node.childNodes)) {
|
||
node.childNodes.forEach(childNode => {
|
||
walk(childNode, alternative, related);
|
||
});
|
||
}
|
||
};
|
||
|
||
walk(mimeTree, false, false);
|
||
|
||
let updateCidLinks = str =>
|
||
str.replace(/\bcid:([^\s"']+)/g, (match, cid) => {
|
||
if (cidMap.has(cid)) {
|
||
let attachment = cidMap.get(cid);
|
||
return 'attachment:' + messageId + '/' + attachment.id.toString();
|
||
}
|
||
return match;
|
||
});
|
||
|
||
maildata.html = htmlContent.filter(str => str.trim()).map(updateCidLinks);
|
||
maildata.text = textContent
|
||
.filter(str => str.trim())
|
||
.map(updateCidLinks)
|
||
.join('\n')
|
||
.trim();
|
||
|
||
return maildata;
|
||
}
|
||
|
||
/**
|
||
* Stores attachments to GridStore
|
||
*/
|
||
storeNodeBodies(messageId, maildata, mimeTree, callback) {
|
||
let pos = 0;
|
||
let nodes = maildata.nodes;
|
||
mimeTree.attachmentMap = {};
|
||
let storeNode = () => {
|
||
if (pos >= nodes.length) {
|
||
return callback(null, true);
|
||
}
|
||
|
||
let node = nodes[pos++];
|
||
this.attachmentStorage.create(node, (err, id) => {
|
||
if (err) {
|
||
return callback(err);
|
||
}
|
||
mimeTree.attachmentMap[node.attachmentId] = id;
|
||
return storeNode();
|
||
});
|
||
};
|
||
|
||
storeNode();
|
||
}
|
||
|
||
expectedB64Size(b64size) {
|
||
b64size = Number(b64size) || 0;
|
||
if (!b64size || b64size <= 0) {
|
||
return 0;
|
||
}
|
||
|
||
let newlines = Math.floor(b64size / 78);
|
||
return Math.ceil((b64size - newlines * 2) / 4 * 3);
|
||
}
|
||
|
||
/**
|
||
* Generates IMAP compatible BODY object from message tree
|
||
*
|
||
* @param {Object} mimeTree Parsed mimeTree object
|
||
* @return {Array} BODY object as a structured Array
|
||
*/
|
||
getBody(mimeTree) {
|
||
// BODY – BODYSTRUCTURE without extension data
|
||
let body = new BodyStructure(mimeTree, {
|
||
upperCaseKeys: true,
|
||
body: true
|
||
});
|
||
|
||
return body.create();
|
||
}
|
||
|
||
/**
|
||
* Generates IMAP compatible BODYSTRUCUTRE object from message tree
|
||
*
|
||
* @param {Object} mimeTree Parsed mimeTree object
|
||
* @return {Array} BODYSTRUCTURE object as a structured Array
|
||
*/
|
||
getBodyStructure(mimeTree) {
|
||
// full BODYSTRUCTURE
|
||
let bodystructure = new BodyStructure(mimeTree, {
|
||
upperCaseKeys: true,
|
||
skipContentLocation: false
|
||
});
|
||
|
||
return bodystructure.create();
|
||
}
|
||
|
||
/**
|
||
* Generates IMAP compatible ENVELOPE object from message headers
|
||
*
|
||
* @param {Object} mimeTree Parsed mimeTree object
|
||
* @return {Array} ENVELOPE object as a structured Array
|
||
*/
|
||
getEnvelope(mimeTree) {
|
||
return createEnvelope(mimeTree.parsedHeader || {});
|
||
}
|
||
|
||
/**
|
||
* Resolves numeric path to a node in the parsed MIME tree
|
||
*
|
||
* @param {Object} mimeTree Parsed mimeTree object
|
||
* @param {String} path Dot-separated numeric path
|
||
* @return {Object} Mime node
|
||
*/
|
||
resolveContentNode(mimeTree, path) {
|
||
if (!mimeTree.childNodes && path === '1') {
|
||
path = '';
|
||
}
|
||
|
||
let pathNumbers = (path || '').toString().split('.');
|
||
let contentNode = mimeTree;
|
||
let pathNumber;
|
||
|
||
while ((pathNumber = pathNumbers.shift())) {
|
||
pathNumber = Number(pathNumber) - 1;
|
||
if (contentNode.message) {
|
||
// redirect to message/rfc822
|
||
contentNode = contentNode.message;
|
||
}
|
||
|
||
if (contentNode.childNodes && contentNode.childNodes[pathNumber]) {
|
||
contentNode = contentNode.childNodes[pathNumber];
|
||
} else {
|
||
return false;
|
||
}
|
||
}
|
||
|
||
return contentNode;
|
||
}
|
||
|
||
bodyQuery(mimeTree, selector, callback) {
|
||
let data = this.getContents(mimeTree, selector);
|
||
|
||
if (data && data.type === 'stream') {
|
||
let sent = false;
|
||
let buffers = [];
|
||
let buflen = 0;
|
||
|
||
data.value.on('readable', () => {
|
||
let buf;
|
||
while ((buf = data.value.read())) {
|
||
buffers.push(buf);
|
||
buflen += buf.length;
|
||
}
|
||
});
|
||
|
||
data.value.on('error', err => {
|
||
if (sent) {
|
||
return;
|
||
}
|
||
sent = true;
|
||
return callback(err);
|
||
});
|
||
|
||
data.value.on('end', () => {
|
||
if (sent) {
|
||
return;
|
||
}
|
||
sent = true;
|
||
return callback(null, Buffer.concat(buffers, buflen));
|
||
});
|
||
} else {
|
||
return setImmediate(() => callback(null, Buffer.from((data || '').toString(), 'binary')));
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Get node contents
|
||
*
|
||
* *selector* is an object with the following properties:
|
||
* * *path* – numeric path 1.2.3
|
||
* * *type* - one of content|header|header.fields|header.fields.not|text|mime
|
||
* * *headers* - an array of headers to include/exclude
|
||
*
|
||
* @param {Object} mimeTree Parsed mimeTree object
|
||
* @param {Object} selector What data to return
|
||
* @param {Boolean} skipExternal If true, do not include the external nodes
|
||
* @return {String} node contents
|
||
*/
|
||
getContents(mimeTree, selector, skipExternal) {
|
||
let node = mimeTree;
|
||
if (typeof selector === 'string') {
|
||
selector = {
|
||
type: selector
|
||
};
|
||
}
|
||
selector = selector || {
|
||
type: ''
|
||
};
|
||
|
||
if (selector.path) {
|
||
node = this.resolveContentNode(mimeTree, selector.path);
|
||
}
|
||
|
||
if (!node) {
|
||
return '';
|
||
}
|
||
|
||
switch (selector.type) {
|
||
case '':
|
||
case 'content':
|
||
if (!selector.path) {
|
||
// BODY[]
|
||
node.attachmentMap = mimeTree.attachmentMap;
|
||
return this.rebuild(node, false, skipExternal);
|
||
}
|
||
// BODY[1.2.3]
|
||
node.attachmentMap = mimeTree.attachmentMap;
|
||
return this.rebuild(node, true, skipExternal);
|
||
|
||
case 'header':
|
||
if (!selector.path) {
|
||
// BODY[HEADER] mail header
|
||
return formatHeaders(node.header).join('\r\n') + '\r\n\r\n';
|
||
} else if (node.message) {
|
||
// BODY[1.2.3.HEADER] embedded message/rfc822 header
|
||
return (node.message.header || []).join('\r\n') + '\r\n\r\n';
|
||
}
|
||
return '';
|
||
|
||
case 'header.fields': {
|
||
// BODY[HEADER.FIELDS.NOT (Key1 Key2 KeyN)] only selected header keys
|
||
if (!selector.headers || !selector.headers.length) {
|
||
return '\r\n\r\n';
|
||
}
|
||
let headers =
|
||
formatHeaders(node.header)
|
||
.filter(line => {
|
||
let key = line
|
||
.split(':')
|
||
.shift()
|
||
.toLowerCase()
|
||
.trim();
|
||
return selector.headers.indexOf(key) >= 0;
|
||
})
|
||
.join('\r\n') + '\r\n\r\n';
|
||
return headers;
|
||
}
|
||
case 'header.fields.not': {
|
||
// BODY[HEADER.FIELDS.NOT (Key1 Key2 KeyN)] all but selected header keys
|
||
if (!selector.headers || !selector.headers.length) {
|
||
return formatHeaders(node.header).join('\r\n') + '\r\n\r\n';
|
||
}
|
||
let headers =
|
||
formatHeaders(node.header)
|
||
.filter(line => {
|
||
let key = line
|
||
.split(':')
|
||
.shift()
|
||
.toLowerCase()
|
||
.trim();
|
||
return selector.headers.indexOf(key) < 0;
|
||
})
|
||
.join('\r\n') + '\r\n\r\n';
|
||
return headers;
|
||
}
|
||
|
||
case 'mime':
|
||
// BODY[1.2.3.MIME] mime node header
|
||
return formatHeaders(node.header).join('\r\n') + '\r\n\r\n';
|
||
|
||
case 'text':
|
||
if (!selector.path) {
|
||
// BODY[TEXT] mail body without headers
|
||
node.attachmentMap = mimeTree.attachmentMap;
|
||
return this.rebuild(node, true, skipExternal);
|
||
} else if (node.message) {
|
||
// BODY[1.2.3.TEXT] embedded message/rfc822 body without headers
|
||
node.attachmentMap = mimeTree.attachmentMap;
|
||
return this.rebuild(node.message, true, skipExternal);
|
||
}
|
||
|
||
return '';
|
||
default:
|
||
return '';
|
||
}
|
||
}
|
||
}
|
||
|
||
function formatHeaders(headers) {
|
||
headers = headers || [];
|
||
if (!Array.isArray(headers)) {
|
||
headers = [].concat(headers || []);
|
||
}
|
||
return headers;
|
||
}
|
||
|
||
function textToHtml(str) {
|
||
let encoded = he
|
||
// encode special chars
|
||
.encode(str, {
|
||
useNamedReferences: true
|
||
});
|
||
try {
|
||
if (linkify.pretest(encoded)) {
|
||
let links = linkify.match(encoded) || [];
|
||
let result = [];
|
||
let last = 0;
|
||
links.forEach(link => {
|
||
if (last < link.index) {
|
||
result.push(encoded.slice(last, link.index));
|
||
}
|
||
|
||
let url = he
|
||
// encode special chars
|
||
.encode(link.url, {
|
||
useNamedReferences: true
|
||
});
|
||
|
||
let text = he
|
||
// encode special chars
|
||
.encode(link.text, {
|
||
useNamedReferences: true
|
||
});
|
||
|
||
result.push(`<a href="${url}">${text}</a>`);
|
||
|
||
last = link.lastIndex;
|
||
});
|
||
|
||
result.push(encoded.slice(last));
|
||
|
||
encoded = result.join('');
|
||
}
|
||
} catch (E) {
|
||
// failed, don't linkify
|
||
}
|
||
let text =
|
||
'<p>' +
|
||
encoded
|
||
.replace(/\r?\n/g, '\n')
|
||
.trim() // normalize line endings
|
||
.replace(/[ \t]+$/gm, '')
|
||
.trim() // trim empty line endings
|
||
.replace(/\n\n+/g, '</p><p>')
|
||
.trim() // insert <p> to multiple linebreaks
|
||
.replace(/\n/g, '<br/>') + // insert <br> to single linebreaks
|
||
'</p>';
|
||
|
||
return text;
|
||
}
|
||
|
||
function leftPad(val, chr, len) {
|
||
return chr.repeat(len - val.toString().length) + val;
|
||
}
|
||
|
||
module.exports = Indexer;
|