// ==UserScript==
// @name 下载博客
// @namespace 22/7 blog download
// @match *://blog.nanabunnonijyuuni.com/s/n227/diary/detail/*
// @require https://cdnjs.cloudflare.com/ajax/libs/jszip/3.7.1/jszip.min.js
// @require https://cdnjs.cloudflare.com/ajax/libs/FileSaver.js/2.0.0/FileSaver.min.js
// @require https://cdnjs.cloudflare.com/ajax/libs/dom-to-image/2.6.0/dom-to-image.min.js
// @require https://cdnjs.cloudflare.com/ajax/libs/jszip-utils/0.1.0/jszip-utils.min.js
// @require https://cdnjs.cloudflare.com/ajax/libs/js-beautify/1.14.0/beautify-html.min.js
// @grant none
// @version 1.2
// @author FBZ
// @description 下载22/7博客内容
// @license MIT
/* jshint esversion: 6 */
// ==/UserScript==
;(function () {
const blogBaseUrl = 'http://blog.nanabunnonijyuuni.com'
const downloadButton = `<div id="downloadButton" title="下载">
<span class="inner">↓</span>
</div>`
const downloadBtnCss = `
#downloadButton {
position: fixed;
bottom: 3rem;
left: 2rem;
border: 1px solid rgba(0, 0, 0, 0.5);
border-radius: 50%;
width: 2.5rem;
height: 2.5rem;
display: flex;
align-items: center;
justify-content: center;
cursor: pointer;
}
#downloadButton:hover {
color: #409EFF;
border-color: #409EFF;
}
`
const htmlTemplate = `<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width">
<meta name="format-detection" content="telephone=no">
<title>BLOG | 22/7(ナナブンノニジュウニ)</title>
<style type="text/css">
#container {
display: flex;
justify-content: center;
}
</style>
</head>
<body>
<div id="container"></div>
</body>
</html>`
const beautifyOpts = {
indent_size: '2',
indent_char: ' ',
max_preserve_newlines: '0',
preserve_newlines: true,
keep_array_indentation: true,
break_chained_methods: true,
indent_scripts: 'keep',
brace_style: 'collapse,preserve-inline',
space_before_conditional: false,
unescape_strings: false,
jslint_happy: true,
end_with_newline: true,
wrap_line_length: '80',
indent_inner_html: true,
comma_first: false,
e4x: true,
indent_empty_lines: false,
}
let isDownloading = false
const zip = new JSZip()
addStyle(downloadBtnCss)
generateDownloadBtn()
/* 下载博客 */
async function downloadBlog() {
if (isDownloading) return
try {
setLoading()
const title = document
.querySelector('.blog_detail__head')
.querySelector('.blog_detail__title').textContent //获取博客标题
const name = document
.querySelector('.blog_detail__head')
.querySelector('.blog_detail__date')
.querySelector('.name').textContent //获取成员名字
const date = document
.querySelector('.blog_detail__head')
.querySelector('.blog_detail__date')
.querySelector('.date').textContent //获取博客日期
const { newHtml, imgList, cssList } = generateHtml()
zip.file(
'blog.html',
html_beautify(`<!DOCTYPE html>\n${newHtml.outerHTML}`, beautifyOpts)
) //生成html
zip.folder('assets/images') // 创建目录存放图片资源
imgList.forEach(({ filename, src }) => {
JSZipUtils.getBinaryContent(src, function (err, data) {
if (err) {
throw err // or handle err
}
zip.file(`assets/images/${filename}`, data, { binary: true }) // 批量塞入图片
})
})
zip.folder('assets/css') // 创建目录存放图片资源
cssList.forEach(({ filename, src }) => {
JSZipUtils.getBinaryContent(src, function (err, data) {
if (err) {
throw err // or handle err
}
zip.file(`assets/css/${filename}`, data, { binary: true }) // css存到本地
})
})
const indexImg = await generateScreenShot() // 生成博客截图
const indexImg_transparent = base64Decode(await generateScreenShot(true)) // 生成博客截图
zip.file('screenshot.png', base64Decode(indexImg), { base64: true })
zip.file(
'screenshot_transparent.png',
base64Decode(indexImg_transparent),
{
base64: true,
}
)
// 下载生成的文件
const content = await zip.generateAsync({ type: 'blob' })
saveAs(content, `${name}-${date}-${title}.zip`)
resetLoading()
} catch (error) {
resetLoading()
}
}
/* 加载中 */
function setLoading() {
isDownloading = true
document.querySelector('#downloadButton').style.cursor = 'progress'
}
/* 重置加载 */
function resetLoading() {
isDownloading = false
document.querySelector('#downloadButton').style.cursor = ''
}
/* 生成博客截图 */
function generateScreenShot(transparent = false) {
return new Promise((resolve, reject) => {
const blogDetail = document.querySelector('.blog_detail')
domtoimage
.toPng(blogDetail, {
bgcolor: transparent ? '' : '#ffffff',
/*style: {
padding: '32px',
},*/
filter: (node) => {
return node.className !== 'btnTweet'
},
})
.then((res) => {
resolve(res)
})
.catch((err) => {
reject(err)
})
})
}
/* 往新的html里填充内容 */
function generateHtml() {
const parser = new DOMParser()
const { documentElement: newHtml } = parser.parseFromString(
htmlTemplate,
'text/html'
) //通过模板生成html
const container = newHtml.querySelector('#container')
const blogDetail = document.querySelector('.blog_detail').cloneNode(true)
const blogDetailMain = blogDetail.querySelector('.blog_detail__main')
const twitterNode = blogDetailMain.querySelector('.btnTweet')
blogDetailMain.removeChild(twitterNode)
const imgNodes = blogDetail.querySelectorAll('img')
const imgList = []
for (const node of imgNodes) {
const i = node.src.lastIndexOf('/')
const filename = node.src.slice(i + 1)
imgList.push({
filename,
src: node.src,
})
node.src = `./assets/images/${filename}`
}
const linkNodes = document.cloneNode(true).querySelectorAll('link')
console.log('linkNodes: ', linkNodes)
const cssList = []
for (const node of linkNodes) {
if (
node.href.includes('blog.nanabunnonijyuuni.com') &&
node.href.includes('.css')
) {
const i = node.href.lastIndexOf('/')
const filename = node.href.slice(i + 1)
cssList.push({
filename,
src: node.href,
})
const link = document.createElement('link')
link.href = `./assets/css/${filename}`
link.type = 'text/css'
link.rel = 'stylesheet'
newHtml.querySelector('head').appendChild(link)
}
}
container.appendChild(blogDetail)
return { newHtml, imgList, cssList }
}
/* 生成下载按钮 */
function generateDownloadBtn() {
const div = document.createElement('div')
div.innerHTML = downloadButton
document.body.appendChild(div)
document.querySelector('#downloadButton').addEventListener('click', () => {
downloadBlog()
})
}
/* 添加样式 */
function addStyle(css) {
if (!css) return
var head = document.querySelector('head')
var style = document.createElement('style')
style.innerHTML = css
head.appendChild(style)
}
// base64去头
function base64Decode(code) {
if (code && code.includes('data:image')) {
code = code.slice(code.indexOf(',') + 1)
}
return code
}
})()
