mirror of https://gitlab.com/curben/blog
80 lines
2.7 KiB
JavaScript
80 lines
2.7 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://res.cloudinary.com/' + user +
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'/image/upload/w_auto,f_auto,q_auto,c_scale/c_limit,'
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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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}
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if (fileName.endsWith('.png') || fileName.endsWith('.webp')) {
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return `<a href="https://res.cloudinary.com/curben/${fileName}">
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<picture>
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<source type="image/webp"
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srcset="${cloudinary}w_300/${modern} 300w,
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${cloudinary}w_450/${modern} 450w,
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${cloudinary}w_600/${modern} 600w,
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${cloudinary}w_900/${modern} 900w,
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${cloudinary}w_1200/${modern} 1200w,
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${cloudinary}w_1500/${modern} 1500w"
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sizes="(max-width: 300px) 280px,
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(max-width: 450px) 430px,
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(max-width: 600px) 580px,
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(max-width: 900px) 880px,
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(max-width: 1200px) 1180px,
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1500px">
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<img
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srcset="${cloudinary}w_300/${legacy} 300w,
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${cloudinary}w_450/${legacy} 450w,
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${cloudinary}w_600/${legacy} 600w,
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${cloudinary}w_900/${legacy} 900w,
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${cloudinary}w_1200/${legacy} 1200w,
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${cloudinary}w_1500/${legacy} 1500w"
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sizes="(max-width: 300px) 280px,
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(max-width: 450px) 430px,
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(max-width: 600px) 580px,
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(max-width: 900px) 880px,
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(max-width: 1200px) 1180px,
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1500px"
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src="${cloudinary}w_600/${legacy}"
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alt="${alt}">
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</picture></a>`
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} else {
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return `<a href="https://res.cloudinary.com/curben/${fileName}">
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<img
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srcset="${cloudinary}w_300/${fileName} 300w,
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${cloudinary}w_450/${fileName} 450w,
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${cloudinary}w_600/${fileName} 600w,
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${cloudinary}w_900/${fileName} 900w,
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${cloudinary}w_1200/${fileName} 1200w,
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${cloudinary}w_1500/${fileName} 1500w"
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sizes="(max-width: 300px) 280px,
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(max-width: 450px) 430px,
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(max-width: 600px) 580px,
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(max-width: 900px) 880px,
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(max-width: 1200px) 1180px,
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1500px"
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src="${cloudinary}w_600/${fileName}"
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alt="${alt}">
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</a>`
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}
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})
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