mirror of https://gitlab.com/curben/blog
62 lines
1.9 KiB
JavaScript
62 lines
1.9 KiB
JavaScript
'use strict'
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/* global hexo */
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/*
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* Put {% cloudinary 'folder/filename.jpg' 'description' %} in your post.
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* Change the username in 'user' variable
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* More info:
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* https://cloudinary.com/blog/responsive_images_with_srcset_sizes_and_cloudinary
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*/
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hexo.extend.tag.register('cloudinary', (args) => {
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const user = 'curben'
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const fileName = args[0]
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const alt = args[1] || ''
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let modern = ''
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let legacy = ''
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const cloudinary = 'https://cdn.statically.io/img/res.cloudinary.com/' + user +
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'/image/upload/q_auto'
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const original = 'https://cdn.statically.io/img/res.cloudinary.com/' + user + '/' + fileName
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if (fileName.endsWith('.png')) {
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modern = fileName.replace(/\.png$/, '.webp')
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legacy = fileName
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} else if (fileName.endsWith('.webp')) {
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modern = fileName
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legacy = fileName.replace(/\.webp$/, '.gif')
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} else {
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legacy = fileName
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}
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const img = `<img
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srcset="${cloudinary}/c_limit,w_320/${legacy} 320w,
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${cloudinary}/c_limit,w_468/${legacy} 468w,
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${cloudinary}/c_limit,w_768/${legacy} 768w,
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${cloudinary}/${legacy} 800w"
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sizes="(max-width: 320px) 320px,
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(max-width: 468px) 468px,
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(max-width: 768px) 768px,
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800px">
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src="${cloudinary}w_768/${legacy}"
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alt="${alt}">`
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if (fileName.endsWith('.png') || fileName.endsWith('.webp')) {
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return `<a href="${original}">
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<picture>
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<source type="image/webp"
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srcset="${cloudinary}/c_limit,w_320/${modern} 320w,
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${cloudinary}/c_limit,w_468/${modern} 468w,
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${cloudinary}/c_limit,w_768/${modern} 768w,
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${cloudinary}/${modern} 800w"
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sizes="(max-width: 320px) 320px,
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(max-width: 468px) 468px,
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(max-width: 768px) 768px,
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800px">
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${img}
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</picture></a>`
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} else {
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return `<a href="${original}">
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${img}</a>`
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}
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})
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