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other seo improvement and analytics: images
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,112 @@ | ||
import { HTMLDocument } from "../deps/dom.ts"; | ||
import { RoutedPage } from "../routes.ts"; | ||
|
||
type Options = { | ||
mediaConfig: { | ||
tiny?: string; | ||
small?: string; | ||
medium?: string; | ||
large?: string; | ||
}; | ||
}; | ||
|
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const defaults: Options = { | ||
mediaConfig: { | ||
tiny: undefined, | ||
small: "(min-width: 300px)", | ||
medium: "(min-width: 480px)", | ||
large: "(min-width: 600px)", | ||
}, | ||
}; | ||
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export default function pictureRelosution( | ||
page: RoutedPage, | ||
document: HTMLDocument, | ||
imageInFolders: string[], | ||
) { | ||
const options = defaults; | ||
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if (!page?.data) return; | ||
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if (!page?.data?.thumbnail) { | ||
page.data.thumbnail = { src: "" }; | ||
} | ||
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const images = document?.querySelectorAll("img"); | ||
if (!images) return; | ||
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for (const img of images) { | ||
const src = img.getAttribute("src"); | ||
const alt = img.getAttribute("alt"); | ||
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src && img.setAttribute("src", src); | ||
alt && img.setAttribute("alt", alt); | ||
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if (!src) return; | ||
const sizes = ["large", "medium", "small", "tiny"]; | ||
const imagesFound: [string, string][] = []; | ||
const pathFileNameWithoutExtension = src.replace(/(\..*)$/, ``); | ||
|
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for (const size of sizes) { | ||
const regex = new RegExp( | ||
`${ | ||
pathFileNameWithoutExtension.split("/").slice(-1) | ||
}\.[0-9]{1,4}x[0-9]{1,4}\.${size}.webp`, | ||
); | ||
const sizeImageFound = imageInFolders.find((img) => regex.test(img)); | ||
sizeImageFound && imagesFound.push([size, "/img" + sizeImageFound]); | ||
} | ||
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const mediaConfig: Record<string, string | undefined> = options.mediaConfig; | ||
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if (imagesFound.length > 0 && document) { | ||
const picture = document.createElement("picture"); | ||
alt && picture.setAttribute("alt", alt); | ||
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for (const [size, path] of imagesFound) { | ||
const source = document.createElement("source"); | ||
source.setAttribute("srcset", path); | ||
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const regex = new RegExp("\.([0-9]{1,4}x[0-9]{1,4})\."); | ||
const resolutionFromName = regex.exec(path)?.[1]; | ||
const [w, h] = resolutionFromName?.split("x") ?? []; | ||
if (w && h && !img.getAttribute("width")) { | ||
source.setAttribute("width", `${w}px`); | ||
source.setAttribute("height", `${h}px`); | ||
source.setAttribute( | ||
"style", | ||
`width:100%; height: auto; max-width:${w}px; max-height: ${h}px;`, | ||
); | ||
} | ||
|
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const media = mediaConfig[size]; | ||
media && source.setAttribute("media", media); | ||
|
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picture.appendChild(source); | ||
} | ||
img.replaceWith(picture); | ||
const regex = new RegExp( | ||
`${ | ||
pathFileNameWithoutExtension.split("/").slice(-1) | ||
}\.[0-9]{1,4}x[0-9]{1,4}\.webp$`, | ||
); | ||
const sizeImageFound = imageInFolders.find((img) => regex.test(img)); | ||
if (sizeImageFound) { | ||
const regex = new RegExp("\.([0-9]{1,4}x[0-9]{1,4})\."); | ||
const resolutionFromName = regex.exec(sizeImageFound)?.[1]; | ||
const [w, h] = resolutionFromName?.split("x") ?? []; | ||
if (w && h && !img.getAttribute("width")) { | ||
img.setAttribute("width", `${w}px`); | ||
img.setAttribute("height", `${h}px`); | ||
img.setAttribute( | ||
"style", | ||
`width:100%; height: auto; max-width:${w}px; max-height: ${h}px;`, | ||
); | ||
} | ||
img.setAttribute("src", "/img" + sizeImageFound); | ||
} | ||
picture.appendChild(img); | ||
} | ||
} | ||
return document; | ||
} |
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -1,3 +1,4 @@ | ||
target | ||
cargo.lock | ||
.webp | ||
*.(large|medium|small|tiny).webp | ||
|
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,3 @@ | ||
rm -f test2.webp | ||
ls | grep -E "(large|medium|small|tiny)" | xargs rm | ||
ls | grep -E "[0-9]{1,4}x[0-9]{1,4}.webp" | xargs rm |
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