penpot/frontend/src/app/util/zip.cljs
2023-12-26 14:14:20 +01:00

68 lines
1.7 KiB
Clojure

;; This Source Code Form is subject to the terms of the Mozilla Public
;; License, v. 2.0. If a copy of the MPL was not distributed with this
;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
;;
;; Copyright (c) KALEIDOS INC
(ns app.util.zip
"Helpers for make zip file (using jszip)."
(:require
["jszip" :as zip]
[app.util.http :as http]
[beicon.v2.core :as rx]
[promesa.core :as p]))
(defn compress-files
[files]
(letfn [(attach-file [zobj [name content]]
(.file zobj name content))]
(let [zobj (zip.)]
(run! (partial attach-file zobj) files)
(->> (.generateAsync zobj #js {:type "blob"})
(rx/from)))))
(defn load-from-url
"Loads the data from a blob url"
[url]
(->> (http/send!
{:uri url
:response-type :blob
:method :get})
(rx/map :body)
(rx/merge-map zip/loadAsync)))
(defn- process-file
[entry path type]
(cond
(nil? entry)
(p/rejected (str "File not found: " path))
(.-dir entry)
(p/resolved {:dir path})
:else
(-> (.async entry type)
(p/then #(hash-map :path path :content %)))))
(defn get-file
"Gets a single file from the zip archive"
([zip path]
(get-file zip path "text"))
([zip path type]
(-> (.file zip path)
(process-file path type)
(rx/from))))
(defn extract-files
"Creates a stream that will emit values for every file in the zip"
[zip]
(let [promises (atom [])
get-file
(fn [path entry]
(let [current (process-file entry path "text")]
(swap! promises conj current)))]
(.forEach zip get-file)
(->> (rx/from (p/all @promises))
(rx/merge-map identity))))