virt2/api/templates/admin/assets/vendor_components/to-markdown/to-markdown.js

789 lines
18 KiB
JavaScript
Executable File

(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.toMarkdown = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
/*
* to-markdown - an HTML to Markdown converter
*
* Copyright 2011+, Dom Christie
* Licenced under the MIT licence
*
*/
'use strict'
var toMarkdown
var converters
var mdConverters = require('./lib/md-converters')
var gfmConverters = require('./lib/gfm-converters')
var HtmlParser = require('./lib/html-parser')
var collapse = require('collapse-whitespace')
/*
* Utilities
*/
var blocks = ['address', 'article', 'aside', 'audio', 'blockquote', 'body',
'canvas', 'center', 'dd', 'dir', 'div', 'dl', 'dt', 'fieldset', 'figcaption',
'figure', 'footer', 'form', 'frameset', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6',
'header', 'hgroup', 'hr', 'html', 'isindex', 'li', 'main', 'menu', 'nav',
'noframes', 'noscript', 'ol', 'output', 'p', 'pre', 'section', 'table',
'tbody', 'td', 'tfoot', 'th', 'thead', 'tr', 'ul'
]
function isBlock (node) {
return blocks.indexOf(node.nodeName.toLowerCase()) !== -1
}
var voids = [
'area', 'base', 'br', 'col', 'command', 'embed', 'hr', 'img', 'input',
'keygen', 'link', 'meta', 'param', 'source', 'track', 'wbr'
]
function isVoid (node) {
return voids.indexOf(node.nodeName.toLowerCase()) !== -1
}
function htmlToDom (string) {
var tree = new HtmlParser().parseFromString(string, 'text/html')
collapse(tree.documentElement, isBlock)
return tree
}
/*
* Flattens DOM tree into single array
*/
function bfsOrder (node) {
var inqueue = [node]
var outqueue = []
var elem
var children
var i
while (inqueue.length > 0) {
elem = inqueue.shift()
outqueue.push(elem)
children = elem.childNodes
for (i = 0; i < children.length; i++) {
if (children[i].nodeType === 1) inqueue.push(children[i])
}
}
outqueue.shift()
return outqueue
}
/*
* Contructs a Markdown string of replacement text for a given node
*/
function getContent (node) {
var text = ''
for (var i = 0; i < node.childNodes.length; i++) {
if (node.childNodes[i].nodeType === 1) {
text += node.childNodes[i]._replacement
} else if (node.childNodes[i].nodeType === 3) {
text += node.childNodes[i].data
} else continue
}
return text
}
/*
* Returns the HTML string of an element with its contents converted
*/
function outer (node, content) {
return node.cloneNode(false).outerHTML.replace('><', '>' + content + '<')
}
function canConvert (node, filter) {
if (typeof filter === 'string') {
return filter === node.nodeName.toLowerCase()
}
if (Array.isArray(filter)) {
return filter.indexOf(node.nodeName.toLowerCase()) !== -1
} else if (typeof filter === 'function') {
return filter.call(toMarkdown, node)
} else {
throw new TypeError('`filter` needs to be a string, array, or function')
}
}
function isFlankedByWhitespace (side, node) {
var sibling
var regExp
var isFlanked
if (side === 'left') {
sibling = node.previousSibling
regExp = / $/
} else {
sibling = node.nextSibling
regExp = /^ /
}
if (sibling) {
if (sibling.nodeType === 3) {
isFlanked = regExp.test(sibling.nodeValue)
} else if (sibling.nodeType === 1 && !isBlock(sibling)) {
isFlanked = regExp.test(sibling.textContent)
}
}
return isFlanked
}
function flankingWhitespace (node, content) {
var leading = ''
var trailing = ''
if (!isBlock(node)) {
var hasLeading = /^[ \r\n\t]/.test(content)
var hasTrailing = /[ \r\n\t]$/.test(content)
if (hasLeading && !isFlankedByWhitespace('left', node)) {
leading = ' '
}
if (hasTrailing && !isFlankedByWhitespace('right', node)) {
trailing = ' '
}
}
return { leading: leading, trailing: trailing }
}
/*
* Finds a Markdown converter, gets the replacement, and sets it on
* `_replacement`
*/
function process (node) {
var replacement
var content = getContent(node)
// Remove blank nodes
if (!isVoid(node) && !/A|TH|TD/.test(node.nodeName) && /^\s*$/i.test(content)) {
node._replacement = ''
return
}
for (var i = 0; i < converters.length; i++) {
var converter = converters[i]
if (canConvert(node, converter.filter)) {
if (typeof converter.replacement !== 'function') {
throw new TypeError(
'`replacement` needs to be a function that returns a string'
)
}
var whitespace = flankingWhitespace(node, content)
if (whitespace.leading || whitespace.trailing) {
content = content.trim()
}
replacement = whitespace.leading +
converter.replacement.call(toMarkdown, content, node) +
whitespace.trailing
break
}
}
node._replacement = replacement
}
toMarkdown = function (input, options) {
options = options || {}
if (typeof input !== 'string') {
throw new TypeError(input + ' is not a string')
}
if (input === '') {
return ''
}
// Escape potential ol triggers
input = input.replace(/(\d+)\. /g, '$1\\. ')
var clone = htmlToDom(input).body
var nodes = bfsOrder(clone)
var output
converters = mdConverters.slice(0)
if (options.gfm) {
converters = gfmConverters.concat(converters)
}
if (options.converters) {
converters = options.converters.concat(converters)
}
// Process through nodes in reverse (so deepest child elements are first).
for (var i = nodes.length - 1; i >= 0; i--) {
process(nodes[i])
}
output = getContent(clone)
return output.replace(/^[\t\r\n]+|[\t\r\n\s]+$/g, '')
.replace(/\n\s+\n/g, '\n\n')
.replace(/\n{3,}/g, '\n\n')
}
toMarkdown.isBlock = isBlock
toMarkdown.isVoid = isVoid
toMarkdown.outer = outer
module.exports = toMarkdown
},{"./lib/gfm-converters":2,"./lib/html-parser":3,"./lib/md-converters":4,"collapse-whitespace":7}],2:[function(require,module,exports){
'use strict'
function cell (content, node) {
var index = Array.prototype.indexOf.call(node.parentNode.childNodes, node)
var prefix = ' '
if (index === 0) prefix = '| '
return prefix + content + ' |'
}
var highlightRegEx = /highlight highlight-(\S+)/
module.exports = [
{
filter: 'br',
replacement: function () {
return '\n'
}
},
{
filter: ['del', 's', 'strike'],
replacement: function (content) {
return '~~' + content + '~~'
}
},
{
filter: function (node) {
return node.type === 'checkbox' && node.parentNode.nodeName === 'LI'
},
replacement: function (content, node) {
return (node.checked ? '[x]' : '[ ]') + ' '
}
},
{
filter: ['th', 'td'],
replacement: function (content, node) {
return cell(content, node)
}
},
{
filter: 'tr',
replacement: function (content, node) {
var borderCells = ''
var alignMap = { left: ':--', right: '--:', center: ':-:' }
if (node.parentNode.nodeName === 'THEAD') {
for (var i = 0; i < node.childNodes.length; i++) {
var align = node.childNodes[i].attributes.align
var border = '---'
if (align) border = alignMap[align.value] || border
borderCells += cell(border, node.childNodes[i])
}
}
return '\n' + content + (borderCells ? '\n' + borderCells : '')
}
},
{
filter: 'table',
replacement: function (content) {
return '\n\n' + content + '\n\n'
}
},
{
filter: ['thead', 'tbody', 'tfoot'],
replacement: function (content) {
return content
}
},
// Fenced code blocks
{
filter: function (node) {
return node.nodeName === 'PRE' &&
node.firstChild &&
node.firstChild.nodeName === 'CODE'
},
replacement: function (content, node) {
return '\n\n```\n' + node.firstChild.textContent + '\n```\n\n'
}
},
// Syntax-highlighted code blocks
{
filter: function (node) {
return node.nodeName === 'PRE' &&
node.parentNode.nodeName === 'DIV' &&
highlightRegEx.test(node.parentNode.className)
},
replacement: function (content, node) {
var language = node.parentNode.className.match(highlightRegEx)[1]
return '\n\n```' + language + '\n' + node.textContent + '\n```\n\n'
}
},
{
filter: function (node) {
return node.nodeName === 'DIV' &&
highlightRegEx.test(node.className)
},
replacement: function (content) {
return '\n\n' + content + '\n\n'
}
}
]
},{}],3:[function(require,module,exports){
/*
* Set up window for Node.js
*/
var _window = (typeof window !== 'undefined' ? window : this)
/*
* Parsing HTML strings
*/
function canParseHtmlNatively () {
var Parser = _window.DOMParser
var canParse = false
// Adapted from https://gist.github.com/1129031
// Firefox/Opera/IE throw errors on unsupported types
try {
// WebKit returns null on unsupported types
if (new Parser().parseFromString('', 'text/html')) {
canParse = true
}
} catch (e) {}
return canParse
}
function createHtmlParser () {
var Parser = function () {}
// For Node.js environments
if (typeof document === 'undefined') {
var jsdom = require('jsdom')
Parser.prototype.parseFromString = function (string) {
return jsdom.jsdom(string, {
features: {
FetchExternalResources: [],
ProcessExternalResources: false
}
})
}
} else {
if (!shouldUseActiveX()) {
Parser.prototype.parseFromString = function (string) {
var doc = document.implementation.createHTMLDocument('')
doc.open()
doc.write(string)
doc.close()
return doc
}
} else {
Parser.prototype.parseFromString = function (string) {
var doc = new window.ActiveXObject('htmlfile')
doc.designMode = 'on' // disable on-page scripts
doc.open()
doc.write(string)
doc.close()
return doc
}
}
}
return Parser
}
function shouldUseActiveX () {
var useActiveX = false
try {
document.implementation.createHTMLDocument('').open()
} catch (e) {
if (window.ActiveXObject) useActiveX = true
}
return useActiveX
}
module.exports = canParseHtmlNatively() ? _window.DOMParser : createHtmlParser()
},{"jsdom":6}],4:[function(require,module,exports){
'use strict'
module.exports = [
{
filter: 'p',
replacement: function (content) {
return '\n\n' + content + '\n\n'
}
},
{
filter: 'br',
replacement: function () {
return ' \n'
}
},
{
filter: ['h1', 'h2', 'h3', 'h4', 'h5', 'h6'],
replacement: function (content, node) {
var hLevel = node.nodeName.charAt(1)
var hPrefix = ''
for (var i = 0; i < hLevel; i++) {
hPrefix += '#'
}
return '\n\n' + hPrefix + ' ' + content + '\n\n'
}
},
{
filter: 'hr',
replacement: function () {
return '\n\n* * *\n\n'
}
},
{
filter: ['em', 'i'],
replacement: function (content) {
return '_' + content + '_'
}
},
{
filter: ['strong', 'b'],
replacement: function (content) {
return '**' + content + '**'
}
},
// Inline code
{
filter: function (node) {
var hasSiblings = node.previousSibling || node.nextSibling
var isCodeBlock = node.parentNode.nodeName === 'PRE' && !hasSiblings
return node.nodeName === 'CODE' && !isCodeBlock
},
replacement: function (content) {
return '`' + content + '`'
}
},
{
filter: function (node) {
return node.nodeName === 'A' && node.getAttribute('href')
},
replacement: function (content, node) {
var titlePart = node.title ? ' "' + node.title + '"' : ''
return '[' + content + '](' + node.getAttribute('href') + titlePart + ')'
}
},
{
filter: 'img',
replacement: function (content, node) {
var alt = node.alt || ''
var src = node.getAttribute('src') || ''
var title = node.title || ''
var titlePart = title ? ' "' + title + '"' : ''
return src ? '![' + alt + ']' + '(' + src + titlePart + ')' : ''
}
},
// Code blocks
{
filter: function (node) {
return node.nodeName === 'PRE' && node.firstChild.nodeName === 'CODE'
},
replacement: function (content, node) {
return '\n\n ' + node.firstChild.textContent.replace(/\n/g, '\n ') + '\n\n'
}
},
{
filter: 'blockquote',
replacement: function (content) {
content = content.trim()
content = content.replace(/\n{3,}/g, '\n\n')
content = content.replace(/^/gm, '> ')
return '\n\n' + content + '\n\n'
}
},
{
filter: 'li',
replacement: function (content, node) {
content = content.replace(/^\s+/, '').replace(/\n/gm, '\n ')
var prefix = '* '
var parent = node.parentNode
var index = Array.prototype.indexOf.call(parent.children, node) + 1
prefix = /ol/i.test(parent.nodeName) ? index + '. ' : '* '
return prefix + content
}
},
{
filter: ['ul', 'ol'],
replacement: function (content, node) {
var strings = []
for (var i = 0; i < node.childNodes.length; i++) {
strings.push(node.childNodes[i]._replacement)
}
if (/li/i.test(node.parentNode.nodeName)) {
return '\n' + strings.join('\n')
}
return '\n\n' + strings.join('\n') + '\n\n'
}
},
{
filter: function (node) {
return this.isBlock(node)
},
replacement: function (content, node) {
return '\n\n' + this.outer(node, content) + '\n\n'
}
},
// Anything else!
{
filter: function () {
return true
},
replacement: function (content, node) {
return this.outer(node, content)
}
}
]
},{}],5:[function(require,module,exports){
/**
* This file automatically generated from `build.js`.
* Do not manually edit.
*/
module.exports = [
"address",
"article",
"aside",
"audio",
"blockquote",
"canvas",
"dd",
"div",
"dl",
"fieldset",
"figcaption",
"figure",
"footer",
"form",
"h1",
"h2",
"h3",
"h4",
"h5",
"h6",
"header",
"hgroup",
"hr",
"main",
"nav",
"noscript",
"ol",
"output",
"p",
"pre",
"section",
"table",
"tfoot",
"ul",
"video"
];
},{}],6:[function(require,module,exports){
},{}],7:[function(require,module,exports){
'use strict';
var voidElements = require('void-elements');
Object.keys(voidElements).forEach(function (name) {
voidElements[name.toUpperCase()] = 1;
});
var blockElements = {};
require('block-elements').forEach(function (name) {
blockElements[name.toUpperCase()] = 1;
});
/**
* isBlockElem(node) determines if the given node is a block element.
*
* @param {Node} node
* @return {Boolean}
*/
function isBlockElem(node) {
return !!(node && blockElements[node.nodeName]);
}
/**
* isVoid(node) determines if the given node is a void element.
*
* @param {Node} node
* @return {Boolean}
*/
function isVoid(node) {
return !!(node && voidElements[node.nodeName]);
}
/**
* whitespace(elem [, isBlock]) removes extraneous whitespace from an
* the given element. The function isBlock may optionally be passed in
* to determine whether or not an element is a block element; if none
* is provided, defaults to using the list of block elements provided
* by the `block-elements` module.
*
* @param {Node} elem
* @param {Function} blockTest
*/
function collapseWhitespace(elem, isBlock) {
if (!elem.firstChild || elem.nodeName === 'PRE') return;
if (typeof isBlock !== 'function') {
isBlock = isBlockElem;
}
var prevText = null;
var prevVoid = false;
var prev = null;
var node = next(prev, elem);
while (node !== elem) {
if (node.nodeType === 3) {
// Node.TEXT_NODE
var text = node.data.replace(/[ \r\n\t]+/g, ' ');
if ((!prevText || / $/.test(prevText.data)) && !prevVoid && text[0] === ' ') {
text = text.substr(1);
}
// `text` might be empty at this point.
if (!text) {
node = remove(node);
continue;
}
node.data = text;
prevText = node;
} else if (node.nodeType === 1) {
// Node.ELEMENT_NODE
if (isBlock(node) || node.nodeName === 'BR') {
if (prevText) {
prevText.data = prevText.data.replace(/ $/, '');
}
prevText = null;
prevVoid = false;
} else if (isVoid(node)) {
// Avoid trimming space around non-block, non-BR void elements.
prevText = null;
prevVoid = true;
}
} else {
node = remove(node);
continue;
}
var nextNode = next(prev, node);
prev = node;
node = nextNode;
}
if (prevText) {
prevText.data = prevText.data.replace(/ $/, '');
if (!prevText.data) {
remove(prevText);
}
}
}
/**
* remove(node) removes the given node from the DOM and returns the
* next node in the sequence.
*
* @param {Node} node
* @return {Node} node
*/
function remove(node) {
var next = node.nextSibling || node.parentNode;
node.parentNode.removeChild(node);
return next;
}
/**
* next(prev, current) returns the next node in the sequence, given the
* current and previous nodes.
*
* @param {Node} prev
* @param {Node} current
* @return {Node}
*/
function next(prev, current) {
if (prev && prev.parentNode === current || current.nodeName === 'PRE') {
return current.nextSibling || current.parentNode;
}
return current.firstChild || current.nextSibling || current.parentNode;
}
module.exports = collapseWhitespace;
},{"block-elements":5,"void-elements":8}],8:[function(require,module,exports){
/**
* This file automatically generated from `pre-publish.js`.
* Do not manually edit.
*/
module.exports = {
"area": true,
"base": true,
"br": true,
"col": true,
"embed": true,
"hr": true,
"img": true,
"input": true,
"keygen": true,
"link": true,
"menuitem": true,
"meta": true,
"param": true,
"source": true,
"track": true,
"wbr": true
};
},{}]},{},[1])(1)
});