Greasy Fork is available in English.
try to take over the world!
当前为
// ==UserScript==
// @name MD一键生成
// @namespace http://tampermonkey.net/
// @version 0.1
// @description try to take over the world!
// @author You
// @match https://juejin.im/post/*
// @grant none
// ==/UserScript==
(function() {
'use strict';
// Your code here...
setTimeout(downloadFile, 1000)
function downloadFile () {
let fileName, content, parentNode, style
if (location.host.includes('juejin')) { // 掘金
parentNode = document.querySelector('.article-suspended-panel ')
if (!parentNode) {
setTimeout(downloadFile, 500)
return
}
fileName = document.querySelector('.article-title').innerText
content = document.querySelector('.article-content').innerHTML
style = ` display: block;
position: relative;
margin-bottom: .75rem;
width: 3rem;
height: 3rem;
background-color: #fff;
background-position: 50%;
background-repeat: no-repeat;
border-radius: 50%;
box-shadow: 0 2px 4px 0 rgba(0,0,0,.04);
cursor: pointer;`
}
html2md(content, fileName, parentNode, style)
}
const TurndownService = (function () {
'use strict'
function extend (destination) {
for (var i = 1; i < arguments.length; i++) {
var source = arguments[i]
for (var key in source) {
if (source.hasOwnProperty(key)) destination[key] = source[key]
}
}
return destination
}
function repeat (character, count) {
return Array(count + 1).join(character)
}
var blockElements = [
'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 blockElements.indexOf(node.nodeName.toLowerCase()) !== -1
}
var voidElements = [
'area', 'base', 'br', 'col', 'command', 'embed', 'hr', 'img', 'input',
'keygen', 'link', 'meta', 'param', 'source', 'track', 'wbr'
]
function isVoid (node) {
return voidElements.indexOf(node.nodeName.toLowerCase()) !== -1
}
var voidSelector = voidElements.join()
function hasVoid (node) {
return node.querySelector && node.querySelector(voidSelector)
}
var rules = {}
rules.paragraph = {
filter: 'p',
replacement: function (content) {
return '\n\n' + content + '\n\n'
}
}
rules.lineBreak = {
filter: 'br',
replacement: function (content, node, options) {
return options.br + '\n'
}
}
rules.heading = {
filter: ['h1', 'h2', 'h3', 'h4', 'h5', 'h6'],
replacement: function (content, node, options) {
var hLevel = Number(node.nodeName.charAt(1))
if (options.headingStyle === 'setext' && hLevel < 3) {
var underline = repeat((hLevel === 1 ? '=' : '-'), content.length)
return (
'\n\n' + content + '\n' + underline + '\n\n'
)
} else {
return '\n\n' + repeat('#', hLevel) + ' ' + content + '\n\n'
}
}
}
rules.blockquote = {
filter: 'blockquote',
replacement: function (content) {
content = content.replace(/^\n+|\n+$/g, '')
content = content.replace(/^/gm, '> ')
return '\n\n' + content + '\n\n'
}
}
rules.list = {
filter: ['ul', 'ol'],
replacement: function (content, node) {
var parent = node.parentNode
if (parent.nodeName === 'LI' && parent.lastElementChild === node) {
return '\n' + content
} else {
return '\n\n' + content + '\n\n'
}
}
}
rules.listItem = {
filter: 'li',
replacement: function (content, node, options) {
content = content
.replace(/^\n+/, '') // remove leading newlines
.replace(/\n+$/, '\n') // replace trailing newlines with just a single one
.replace(/\n/gm, '\n ') // indent
var prefix = options.bulletListMarker + ' '
var parent = node.parentNode
if (parent.nodeName === 'OL') {
var start = parent.getAttribute('start')
var index = Array.prototype.indexOf.call(parent.children, node)
prefix = (start ? Number(start) + index : index + 1) + '. '
}
return (
prefix + content + (node.nextSibling && !/\n$/.test(content) ? '\n' : '')
)
}
}
rules.indentedCodeBlock = {
filter: function (node, options) {
return (
options.codeBlockStyle === 'indented' &&
node.nodeName === 'PRE' &&
node.firstChild &&
node.firstChild.nodeName === 'CODE'
)
},
replacement: function (content, node, options) {
return (
'\n\n ' +
node.firstChild.textContent.replace(/\n/g, '\n ') +
'\n\n'
)
}
}
rules.fencedCodeBlock = {
filter: function (node, options) {
return (
options.codeBlockStyle === 'fenced' &&
node.nodeName === 'PRE' &&
node.firstChild &&
node.firstChild.nodeName === 'CODE'
)
},
replacement: function (content, node, options) {
var className = node.firstChild.className || ''
var language = (className.match(/language-(\S+)/) || [null, ''])[1]
return (
'\n\n' + options.fence + language + '\n' +
node.firstChild.textContent +
'\n' + options.fence + '\n\n'
)
}
}
rules.horizontalRule = {
filter: 'hr',
replacement: function (content, node, options) {
return '\n\n' + options.hr + '\n\n'
}
}
rules.inlineLink = {
filter: function (node, options) {
return (
options.linkStyle === 'inlined' &&
node.nodeName === 'A' &&
node.getAttribute('href')
)
},
replacement: function (content, node) {
var href = node.getAttribute('href')
var title = node.title ? ' "' + node.title + '"' : ''
return '[' + content + '](' + href + title + ')'
}
}
rules.referenceLink = {
filter: function (node, options) {
return (
options.linkStyle === 'referenced' &&
node.nodeName === 'A' &&
node.getAttribute('href')
)
},
replacement: function (content, node, options) {
var href = node.getAttribute('href')
var title = node.title ? ' "' + node.title + '"' : ''
var replacement
var reference
switch (options.linkReferenceStyle) {
case 'collapsed':
replacement = '[' + content + '][]'
reference = '[' + content + ']: ' + href + title
break
case 'shortcut':
replacement = '[' + content + ']'
reference = '[' + content + ']: ' + href + title
break
default:
var id = this.references.length + 1
replacement = '[' + content + '][' + id + ']'
reference = '[' + id + ']: ' + href + title
}
this.references.push(reference)
return replacement
},
references: [],
append: function (options) {
var references = ''
if (this.references.length) {
references = '\n\n' + this.references.join('\n') + '\n\n'
this.references = [] // Reset references
}
return references
}
}
rules.emphasis = {
filter: ['em', 'i'],
replacement: function (content, node, options) {
if (!content.trim()) return ''
return options.emDelimiter + content + options.emDelimiter
}
}
rules.strong = {
filter: ['strong', 'b'],
replacement: function (content, node, options) {
if (!content.trim()) return ''
return options.strongDelimiter + content + options.strongDelimiter
}
}
rules.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) {
if (!content.trim()) return ''
var delimiter = '`'
var leadingSpace = ''
var trailingSpace = ''
var matches = content.match(/`+/gm)
if (matches) {
if (/^`/.test(content)) leadingSpace = ' '
if (/`$/.test(content)) trailingSpace = ' '
while (matches.indexOf(delimiter) !== -1) delimiter = delimiter + '`'
}
return delimiter + leadingSpace + content + trailingSpace + delimiter
}
}
rules.image = {
filter: 'img',
replacement: function (content, node) {
var alt = node.alt || ''
var src = node.getAttribute('data-src') || node.getAttribute('src')
var title = node.title || ''
var titlePart = title ? ' "' + title + '"' : ''
return src ? `` : ''
}
}
/**
* Manages a collection of rules used to convert HTML to Markdown
*/
function Rules (options) {
this.options = options
this._keep = []
this._remove = []
this.blankRule = {
replacement: options.blankReplacement
}
this.keepReplacement = options.keepReplacement
this.defaultRule = {
replacement: options.defaultReplacement
}
this.array = []
for (var key in options.rules) this.array.push(options.rules[key])
}
Rules.prototype = {
add: function (key, rule) {
this.array.unshift(rule)
},
keep: function (filter) {
this._keep.unshift({
filter: filter,
replacement: this.keepReplacement
})
},
remove: function (filter) {
this._remove.unshift({
filter: filter,
replacement: function () {
return ''
}
})
},
forNode: function (node) {
if (node.isBlank) return this.blankRule
var rule
if ((rule = findRule(this.array, node, this.options))) return rule
if ((rule = findRule(this._keep, node, this.options))) return rule
if ((rule = findRule(this._remove, node, this.options))) return rule
return this.defaultRule
},
forEach: function (fn) {
for (var i = 0; i < this.array.length; i++) fn(this.array[i], i)
}
}
function findRule (rules, node, options) {
for (var i = 0; i < rules.length; i++) {
var rule = rules[i]
if (filterValue(rule, node, options)) return rule
}
return void 0
}
function filterValue (rule, node, options) {
var filter = rule.filter
if (typeof filter === 'string') {
if (filter === node.nodeName.toLowerCase()) return true
} else if (Array.isArray(filter)) {
if (filter.indexOf(node.nodeName.toLowerCase()) > -1) return true
} else if (typeof filter === 'function') {
if (filter.call(rule, node, options)) return true
} else {
throw new TypeError('`filter` needs to be a string, array, or function')
}
}
/**
* The collapseWhitespace function is adapted from collapse-whitespace
* by Luc Thevenard.
*
* The MIT License (MIT)
*
* Copyright (c) 2014 Luc Thevenard <[email protected]>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
/**
* collapseWhitespace(options) removes extraneous whitespace from an the given element.
*
* @param {Object} options
*/
function collapseWhitespace (options) {
var element = options.element
var isBlock = options.isBlock
var isVoid = options.isVoid
var isPre = options.isPre || function (node) {
return node.nodeName === 'PRE'
}
if (!element.firstChild || isPre(element)) return
var prevText = null
var prevVoid = false
var prev = null
var node = next(prev, element, isPre)
while (node !== element) {
if (node.nodeType === 3 || node.nodeType === 4) { // Node.TEXT_NODE or Node.CDATA_SECTION_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, isPre)
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, isPre) returns the next node in the sequence, given the
* current and previous nodes.
*
* @param {Node} prev
* @param {Node} current
* @param {Function} isPre
* @return {Node}
*/
function next (prev, current, isPre) {
if ((prev && prev.parentNode === current) || isPre(current)) {
return current.nextSibling || current.parentNode
}
return current.firstChild || current.nextSibling || current.parentNode
}
/*
* Set up window for Node.js
*/
var root = (typeof window !== 'undefined' ? window : {})
/*
* Parsing HTML strings
*/
function canParseHTMLNatively () {
var Parser = root.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 () {}
if (shouldUseActiveX()) {
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
}
} else {
Parser.prototype.parseFromString = function (string) {
var doc = document.implementation.createHTMLDocument('')
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
}
var HTMLParser = canParseHTMLNatively() ? root.DOMParser : createHTMLParser()
function RootNode (input) {
var root
if (typeof input === 'string') {
var doc = htmlParser().parseFromString(
// DOM parsers arrange elements in the <head> and <body>.
// Wrapping in a custom element ensures elements are reliably arranged in
// a single element.
'<x-turndown id="turndown-root">' + input + '</x-turndown>',
'text/html'
)
root = doc.getElementById('turndown-root')
} else {
root = input.cloneNode(true)
}
collapseWhitespace({
element: root,
isBlock: isBlock,
isVoid: isVoid
})
return root
}
var _htmlParser
function htmlParser () {
_htmlParser = _htmlParser || new HTMLParser()
return _htmlParser
}
function Node (node) {
node.isBlock = isBlock(node)
node.isCode = node.nodeName.toLowerCase() === 'code' || node.parentNode.isCode
node.isBlank = isBlank(node)
node.flankingWhitespace = flankingWhitespace(node)
return node
}
function isBlank (node) {
return (
['A', 'TH', 'TD', 'IFRAME', 'SCRIPT', 'AUDIO', 'VIDEO'].indexOf(node.nodeName) === -1 &&
/^\s*$/i.test(node.textContent) &&
!isVoid(node) &&
!hasVoid(node)
)
}
function flankingWhitespace (node) {
var leading = ''
var trailing = ''
if (!node.isBlock) {
var hasLeading = /^[ \r\n\t]/.test(node.textContent)
var hasTrailing = /[ \r\n\t]$/.test(node.textContent)
if (hasLeading && !isFlankedByWhitespace('left', node)) {
leading = ' '
}
if (hasTrailing && !isFlankedByWhitespace('right', node)) {
trailing = ' '
}
}
return {
leading: leading,
trailing: trailing
}
}
function isFlankedByWhitespace (side, node) {
var sibling
var regExp
var isFlanked
if (side === 'left') {
sibling = node.previousSibling
regExp = / $/
} else {
sibling = node.nextSibling
regExp = /^ /
}
if (sibling) {
if (sibling.nodeType === 3) {
isFlanked = regExp.test(sibling.nodeValue)
} else if (sibling.nodeType === 1 && !isBlock(sibling)) {
isFlanked = regExp.test(sibling.textContent)
}
}
return isFlanked
}
var reduce = Array.prototype.reduce
var leadingNewLinesRegExp = /^\n*/
var trailingNewLinesRegExp = /\n*$/
var escapes = [
[/\\/g, '\\\\'],
[/\*/g, '\\*'],
[/^-/g, '\\-'],
[/^\+ /g, '\\+ '],
[/^(=+)/g, '\\$1'],
[/^(#{1,6}) /g, '\\$1 '],
[/`/g, '\\`'],
[/^~~~/g, '\\~~~'],
[/\[/g, '\\['],
[/\]/g, '\\]'],
[/^>/g, '\\>'],
[/_/g, '\\_'],
[/^(\d+)\. /g, '$1\\. ']
]
function TurndownService (options) {
if (!(this instanceof TurndownService)) return new TurndownService(options)
var defaults = {
rules: rules,
headingStyle: 'setext',
hr: '* * *',
bulletListMarker: '*',
codeBlockStyle: 'indented',
fence: '```',
emDelimiter: '_',
strongDelimiter: '**',
linkStyle: 'inlined',
linkReferenceStyle: 'full',
br: ' ',
blankReplacement: function (content, node) {
return node.isBlock ? '\n\n' : ''
},
keepReplacement: function (content, node) {
return node.isBlock ? '\n\n' + node.outerHTML + '\n\n' : node.outerHTML
},
defaultReplacement: function (content, node) {
return node.isBlock ? '\n\n' + content + '\n\n' : content
}
}
this.options = extend({}, defaults, options)
this.rules = new Rules(this.options)
}
TurndownService.prototype = {
/**
* The entry point for converting a string or DOM node to Markdown
* @public
* @param {String|HTMLElement} input The string or DOM node to convert
* @returns A Markdown representation of the input
* @type String
*/
turndown: function (input) {
if (!canConvert(input)) {
throw new TypeError(
input + ' is not a string, or an element/document/fragment node.'
)
}
if (input === '') return ''
var output = process.call(this, new RootNode(input))
return postProcess.call(this, output)
},
/**
* Add one or more plugins
* @public
* @param {Function|Array} plugin The plugin or array of plugins to add
* @returns The Turndown instance for chaining
* @type Object
*/
use: function (plugin) {
if (Array.isArray(plugin)) {
for (var i = 0; i < plugin.length; i++) this.use(plugin[i])
} else if (typeof plugin === 'function') {
plugin(this)
} else {
throw new TypeError('plugin must be a Function or an Array of Functions')
}
return this
},
/**
* Adds a rule
* @public
* @param {String} key The unique key of the rule
* @param {Object} rule The rule
* @returns The Turndown instance for chaining
* @type Object
*/
addRule: function (key, rule) {
this.rules.add(key, rule)
return this
},
/**
* Keep a node (as HTML) that matches the filter
* @public
* @param {String|Array|Function} filter The unique key of the rule
* @returns The Turndown instance for chaining
* @type Object
*/
keep: function (filter) {
this.rules.keep(filter)
return this
},
/**
* Remove a node that matches the filter
* @public
* @param {String|Array|Function} filter The unique key of the rule
* @returns The Turndown instance for chaining
* @type Object
*/
remove: function (filter) {
this.rules.remove(filter)
return this
},
/**
* Escapes Markdown syntax
* @public
* @param {String} string The string to escape
* @returns A string with Markdown syntax escaped
* @type String
*/
escape: function (string) {
return escapes.reduce(function (accumulator, escape) {
return accumulator.replace(escape[0], escape[1])
}, string)
}
}
/**
* Reduces a DOM node down to its Markdown string equivalent
* @private
* @param {HTMLElement} parentNode The node to convert
* @returns A Markdown representation of the node
* @type String
*/
function process (parentNode) {
var self = this
return reduce.call(parentNode.childNodes, function (output, node) {
node = new Node(node)
var replacement = ''
if (node.nodeType === 3) {
replacement = node.isCode ? node.nodeValue : self.escape(node.nodeValue)
} else if (node.nodeType === 1) {
replacement = replacementForNode.call(self, node)
}
return join(output, replacement)
}, '')
}
/**
* Appends strings as each rule requires and trims the output
* @private
* @param {String} output The conversion output
* @returns A trimmed version of the ouput
* @type String
*/
function postProcess (output) {
var self = this
this.rules.forEach(function (rule) {
if (typeof rule.append === 'function') {
output = join(output, rule.append(self.options))
}
})
return output.replace(/^[\t\r\n]+/, '').replace(/[\t\r\n\s]+$/, '')
}
/**
* Converts an element node to its Markdown equivalent
* @private
* @param {HTMLElement} node The node to convert
* @returns A Markdown representation of the node
* @type String
*/
function replacementForNode (node) {
var rule = this.rules.forNode(node)
var content = process.call(this, node)
var whitespace = node.flankingWhitespace
if (whitespace.leading || whitespace.trailing) content = content.trim()
return (
whitespace.leading +
rule.replacement(content, node, this.options) +
whitespace.trailing
)
}
/**
* Determines the new lines between the current output and the replacement
* @private
* @param {String} output The current conversion output
* @param {String} replacement The string to append to the output
* @returns The whitespace to separate the current output and the replacement
* @type String
*/
function separatingNewlines (output, replacement) {
var newlines = [
output.match(trailingNewLinesRegExp)[0],
replacement.match(leadingNewLinesRegExp)[0]
].sort()
var maxNewlines = newlines[newlines.length - 1]
return maxNewlines.length < 2 ? maxNewlines : '\n\n'
}
function join (string1, string2) {
var separator = separatingNewlines(string1, string2)
// Remove trailing/leading newlines and replace with separator
string1 = string1.replace(trailingNewLinesRegExp, '')
string2 = string2.replace(leadingNewLinesRegExp, '')
return string1 + separator + string2
}
/**
* Determines whether an input can be converted
* @private
* @param {String|HTMLElement} input Describe this parameter
* @returns Describe what it returns
* @type String|Object|Array|Boolean|Number
*/
function canConvert (input) {
return (
input != null && (
typeof input === 'string' ||
(input.nodeType && (
input.nodeType === 1 || input.nodeType === 9 || input.nodeType === 11
))
)
)
}
return TurndownService
}())
function html2md (content, fileName, parentNode, style) {
const turndownService = new TurndownService()
content = turndownService.turndown(content)
const aLink = document.createElement('a')
const blob = new Blob([content])
const evt = document.createEvent('HTMLEvents')
evt.initEvent('click', false, false)
aLink.download = `${fileName}.md`
aLink.href = URL.createObjectURL(blob)
aLink.dispatchEvent(evt)
aLink.style = style
parentNode.insertBefore(aLink, parentNode.childNodes[0])
}
})();