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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 +1,126 @@ | ||
| import { HTMLDocument } from "../deps/dom.ts"; | ||
| import { RoutedPage } from "../routes.ts"; | ||
|
|
||
| type Options = { | ||
| mediaConfig: { | ||
| tiny?: string; | ||
| small?: string; | ||
| medium?: string; | ||
| large?: string; | ||
| }; | ||
| }; | ||
|
|
||
| const defaults: Options = { | ||
| mediaConfig: { | ||
| tiny: undefined, | ||
| small: "(min-width: 300px)", | ||
| medium: "(min-width: 480px)", | ||
| large: "(min-width: 600px)", | ||
| }, | ||
| }; | ||
|
|
||
| export default function pictureRelosution( | ||
| page: RoutedPage, | ||
| document: HTMLDocument, | ||
| imageInFolders: string[], | ||
| maxWidth: number, | ||
| ) { | ||
| const options = defaults; | ||
|
|
||
| if (!page?.data) return; | ||
|
|
||
| if (!page?.data?.thumbnail) { | ||
| page.data.thumbnail = { src: "" }; | ||
| } | ||
|
|
||
| const images = document?.querySelectorAll("img"); | ||
| if (!images) return; | ||
|
|
||
| for (const img of images) { | ||
| const src = img.getAttribute("src"); | ||
| const alt = img.getAttribute("alt"); | ||
|
|
||
| src && img.setAttribute("src", src); | ||
| alt && img.setAttribute("alt", alt); | ||
|
|
||
| if (!src) return; | ||
| const sizes = ["large", "medium", "small", "tiny"]; | ||
| const imagesFound: [string, string][] = []; | ||
| const pathFileNameWithoutExtension = src.replace(/(\..*)$/, ``); | ||
|
|
||
| for (const size of sizes) { | ||
| const regex = new RegExp( | ||
| `${ | ||
| pathFileNameWithoutExtension.split("/").slice(-1) | ||
| }\.[0-9]{1,4}x[0-9]{1,4}\.${size}.webp`, | ||
| ); | ||
| const sizeImageFound = imageInFolders.find((img) => regex.test(img)); | ||
| sizeImageFound && imagesFound.push([size, "/img" + sizeImageFound]); | ||
| } | ||
|
|
||
| const mediaConfig: Record<string, string | undefined> = options.mediaConfig; | ||
|
|
||
| const picture = document.createElement("picture"); | ||
| alt && picture.setAttribute("alt", alt); | ||
|
|
||
| if (imagesFound.length > 0 && document) { | ||
| for (const [size, path] of imagesFound) { | ||
| const source = document.createElement("source"); | ||
| source.setAttribute("srcset", path); | ||
|
|
||
| const regex = new RegExp("\.([0-9]{1,4}x[0-9]{1,4})\."); | ||
| const resolutionFromName = regex.exec(path)?.[1]; | ||
| const [w, h] = resolutionFromName?.split("x") ?? []; | ||
| if (w && h && !img.getAttribute("width")) { | ||
| let ww = parseInt(w); | ||
| let hh = parseInt(h); | ||
| if (ww >= maxWidth) { | ||
| hh = Math.trunc((hh * maxWidth) / ww); | ||
| ww = maxWidth; | ||
| } | ||
| source.setAttribute("width", `${ww}px`); | ||
| source.setAttribute("height", `${hh}px`); | ||
| source.setAttribute( | ||
| "style", | ||
| `width:100%; height: auto; max-width:${ww}px; max-height: ${hh}px;`, | ||
| ); | ||
| } | ||
|
|
||
| const media = mediaConfig[size]; | ||
| media && source.setAttribute("media", media); | ||
|
|
||
| picture.appendChild(source); | ||
| } | ||
| } | ||
|
|
||
| img.replaceWith(picture); | ||
| const regex = new RegExp( | ||
| `${ | ||
| pathFileNameWithoutExtension.split("/").slice(-1) | ||
| }\.[0-9]{1,4}x[0-9]{1,4}\.webp$`, | ||
| ); | ||
| const sizeImageFound = imageInFolders.find((img) => regex.test(img)); | ||
| if (sizeImageFound) { | ||
| const regex = new RegExp("\.([0-9]{1,4}x[0-9]{1,4})\."); | ||
| const resolutionFromName = regex.exec(sizeImageFound)?.[1]; | ||
| const [w, h] = resolutionFromName?.split("x") ?? []; | ||
| if (w && h && !img.getAttribute("width")) { | ||
| let ww = parseInt(w); | ||
| let hh = parseInt(h); | ||
| if (ww >= maxWidth) { | ||
| hh = Math.trunc((hh * maxWidth) / ww); | ||
| ww = maxWidth; | ||
| } | ||
| img.setAttribute("width", `${ww}px`); | ||
| img.setAttribute("height", `${hh}px`); | ||
| img.setAttribute( | ||
| "style", | ||
| `width:100%; height: auto; max-width:${ww}px; max-height: ${hh}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 +1,4 @@ | ||
| cd ../static/img/philosophical_ramblings_about_ecology_programming_languages_and_OOP_not_java/ | ||
| 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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