mirror of
https://github.com/penpot/penpot.git
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84 lines
2.5 KiB
Clojure
84 lines
2.5 KiB
Clojure
;; This Source Code Form is subject to the terms of the Mozilla Public
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;; License, v. 2.0. If a copy of the MPL was not distributed with this
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;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
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;;
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;; This Source Code Form is "Incompatible With Secondary Licenses", as
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;; defined by the Mozilla Public License, v. 2.0.
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;;
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;; Copyright (c) 2020 UXBOX Labs SL
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(ns app.svgparse
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(:require
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[app.common.exceptions :as ex]
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[app.common.spec :as us]
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[cuerdas.core :as str]
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[app.metrics :as mtx]
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[clojure.java.io :as io]
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[clojure.java.shell :as shell]
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[clojure.spec.alpha :as s]
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[clojure.xml :as xml]
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[integrant.core :as ig])
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(:import
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java.io.InputStream
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org.apache.commons.io.IOUtils))
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(defn- string->input-stream
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[^String data]
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(IOUtils/toInputStream data "UTF-8"))
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(defn- stream->string
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[input]
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(with-open [istream (io/input-stream input)]
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(-> (IOUtils/toString input "UTF-8"))))
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(defn- clean-svg
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[^InputStream input]
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(let [result (shell/sh
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;; "svgcleaner" "--allow-bigger-file" "-c" "-"
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"svgo"
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"--enable=prefixIds,removeDimensions,removeXMLNS,removeScriptElement"
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"--disable=removeViewBox,moveElemsAttrsToGroup"
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"-i" "-" "-o" "-"
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:in input :out-enc :bytes)
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err-str (:err result)]
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(when (or (not= 0 (:exit result))
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;; svgcleaner returns 0 with some errors, we need to check
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(and (not= err-str "") (not (nil? err-str)) (str/starts-with? err-str "Error")))
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(ex/raise :type :validation
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:code :unable-to-optimize
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:hint (:err result)))
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(io/input-stream (:out result))))
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(defn parse
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[^InputStream input]
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(with-open [istream (io/input-stream input)]
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(-> (clean-svg istream)
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(xml/parse))))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Handler
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(declare handler)
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(defmethod ig/pre-init-spec ::handler [_]
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(s/keys :req-un [::mtx/metrics]))
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(defmethod ig/init-key ::handler
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[_ {:keys [metrics] :as cfg}]
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(->> {:registry (:registry metrics)
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:type :summary
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:name "http_handler_svgparse_timing"
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:help "svg parse timings"}
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(mtx/instrument handler)))
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(defn- handler
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[{:keys [headers body] :as request}]
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(when (not= "image/svg+xml" (get headers "content-type"))
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(ex/raise :type :validation
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:code :unsupported-mime-type
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:mime (get headers "content-type")))
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{:status 200
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:body (parse body)})
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