From 93e75949e9a2861f651e2a3602e08e9b25cf47c4 Mon Sep 17 00:00:00 2001 From: Marc Pervaz Boocha Date: Thu, 16 Feb 2023 22:57:52 +0530 Subject: Move to Server Side Render with expressjs Backend Rewritten in typescript Signed-off-by: Marc Pervaz Boocha On branch main Your branch is up to date with 'origin/main'. Changes to be committed: new file: .editorconfig modified: .gitignore new file: Containerfile renamed: favicon/icon.svg -> assets/favicon.svg modified: assets/index.css deleted: assets/index.js deleted: assets/mandle.png deleted: assets/sw.js new file: assets/syntax.css modified: deploy deleted: eleventy.config.js deleted: favicon/192.png deleted: favicon/512.png deleted: favicon/icon.ico deleted: license modified: package-lock.json modified: package.json deleted: src/_data/env.js deleted: src/_data/metadata.js deleted: src/_includes/base.njk deleted: src/_includes/page.njk deleted: src/_includes/post.njk deleted: src/about.njk deleted: src/blog.njk new file: src/client/index.ts deleted: src/gen/atom.njk deleted: src/gen/error.njk deleted: src/gen/feedjson.11ty.js deleted: src/gen/gen.11tydata.js deleted: src/gen/manifest.11ty.js deleted: src/gen/metadata.11ty.js deleted: src/gen/robot.njk deleted: src/gen/sitemap.njk deleted: src/index.njk deleted: src/post/post.11tydata.js new file: src/server/app.ts new file: src/server/build.ts new file: src/server/content/about.ts new file: src/server/content/blog.ts new file: src/server/content/feed.ts new file: src/server/content/index.ts new file: src/server/content/robots.ts new file: src/server/content/sitemap.ts new file: src/server/content/webmanifest.ts new file: src/server/errHanadler.ts new file: src/server/img.ts new file: src/server/metadata.ts new file: src/server/router.ts new file: src/server/server.ts new file: src/server/template/Base.ts new file: src/server/template/Page.ts new file: src/server/template/Post.ts new file: src/server/template/atom.ts new file: src/server/template/header.ts new file: src/server/template/html.ts new file: src/server/template/sitemap.ts new file: src/server/template/syntax.ts new file: src/server/template/table.ts new file: src/server/template/vdom.ts new file: src/server/template/xml.ts new file: src/server/utils/createUrl.ts new file: src/server/utils/curl.ts new file: src/server/utils/isDefined.ts new file: src/server/utils/isDevel.ts new file: src/server/utils/relDir.ts new file: src/server/utils/relUrl.ts new file: src/server/utils/schema.ts new file: src/server/utils/setStingRoute.ts new file: src/server/utils/strHandler.ts new file: src/worker/sw.ts new file: src/worker/tsconfig.json new file: tsconfig.json --- src/server/img.ts | 83 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 83 insertions(+) create mode 100644 src/server/img.ts (limited to 'src/server/img.ts') diff --git a/src/server/img.ts b/src/server/img.ts new file mode 100644 index 0000000..7006c3d --- /dev/null +++ b/src/server/img.ts @@ -0,0 +1,83 @@ +import sharp from "sharp" +import { createReadStream } from "node:fs" +import { extname, join } from "node:path" +import createError from "http-errors" +import type express from "express" + +function transform(format: keyof sharp.FormatEnum, width?: number, height?: number): sharp.Sharp { + var transform = sharp().withMetadata() + + if (format) { + transform = transform.toFormat(format) + } + + if (width || height) { + transform = transform.resize({ width, height }) + } + + return transform +} + +function errorHand(next: express.NextFunction) { + return function (err: NodeJS.ErrnoException) { + switch (err.code) { + case "ENOENT": + next() + break + case "EISDIR": + case "EPERM": + next(createError(401)) + break + default: + next(err) + } + } +} + +export default function (path: string) { + return async function (req: express.Request, res: express.Response, next: express.NextFunction) { + const err_handler = errorHand(next) + + const filepath = join(path, req.path) + const ext = extname(filepath).substring(1) + if (![ + "svg", "heic", "heif", "avif", "jpeg", "jpg", "jpe", "tile", "dz", + "png", "raw", "tiff", "tif", "webp", "gif", "jp2", "jpx", "j2k", + "j2c", "jxl" + ].includes(ext)) { + return next() + } + const width = parseInt(String(req.query['width'])) + const height = parseInt(String(req.query['height'])) + var { format = ext } = req.query as { format?: string } + if (format == "svg") { + if (ext == "svg") { + const stream = createReadStream(filepath) + stream.on("error", err_handler) + res.format({ + [format]: function () { + return stream.pipe(res) + } + }) + } else { + return next(createError(400)) + } + return + } + + const stream = createReadStream(filepath) + stream.on("error", err_handler) + res.format({ + [format]: function () { + return stream.pipe( + transform( + format as keyof sharp.FormatEnum, + !isNaN(width) ? width : undefined, + !isNaN(height) ? height : undefined + ) + ).pipe(res) + } + }) + } +} + -- cgit v1.2.3-70-g09d2