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;; extractor.cljs - libextractor used by gnunet-web website
;; Copyright (C) 2014,2015 David Barksdale <amatus@amatus.name>
;;
;; This program is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;;
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
(ns gnunet-web.extractor
(:require [client-lib]))
(def format-unknown 0)
(def format-utf8 1)
(def format-data 2)
(def format-string 3) ; unknown character encoding
(def metatype-mimetype 1)
(def metatype-filename 2)
(def metatype-title 4)
(def metatype-original-filename 180)
(defn metatype-to-string
[type]
(js/UTF8ToString
(js/_EXTRACTOR_metatype_to_string type)))
(defn metatype-to-description
[type]
(js/UTF8ToString
(js/_EXTRACTOR_metatype_to_description type)))
(defn metadata-destroy
[metadata]
(js/_GNUNET_CONTAINER_meta_data_destroy metadata))
(defn metadata-extract
[file]
(let [metadata (js/_GNUNET_CONTAINER_meta_data_create)]
(js/ccallFunc
js/_GNUNET_CONTAINER_meta_data_insert
"number"
(array "number" "string" "number" "number" "string" "string" "number")
(array
metadata
"<gnunet-web>"
metatype-mimetype
format-utf8
"text/plain"
(.-type file)
(inc (count (.-type file)))))
(js/ccallFunc
js/_GNUNET_CONTAINER_meta_data_insert
"number"
(array "number" "string" "number" "number" "string" "string" "number")
(array
metadata
"<gnunet-web>"
metatype-original-filename
format-utf8
"text/plain"
(.-name file)
(inc (count (.-name file)))))
metadata))
(defn guess-filename
[metadata]
(let [preference [metatype-original-filename
metatype-filename
metatype-title
;; ...
]]
(first
(for [type preference
x metadata
:when (= type (:type x))]
(:data x)))))
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