1 files changed, 0 insertions, 107 deletions
diff --git a/background/ResponseMetaData.mjs b/background/ResponseMetaData.mjs
deleted file mode 100644
index 345fc54..0000000
--- a/background/ResponseMetaData.mjs
+++ /dev/null
@@ -1,107 +0,0 @@
-/**
-* GNU LibreJS - A browser add-on to block nonfree nontrivial JavaScript.
-*
-* Copyright (C) 2018 Giorgio Maone <giorgio@maone.net>
-*
-* This file is part of GNU LibreJS.
-*
-* GNU LibreJS 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.
-*
-* GNU LibreJS 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 GNU LibreJS.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-/**
-  This class parses HTTP response headers to extract both the
-  MIME Content-type and the character set to be used, if specified,
-  to parse textual data through a decoder.
-*/
-
-"use strict";
-
-const BOM = [0xEF, 0xBB, 0xBF];
-const DECODER_PARAMS = {stream: true};
-
-class ResponseMetaData {
-  constructor(request) {
-    let {responseHeaders} = request;
-    this.headers = {};
-    for (let h of responseHeaders) {
-      if (/^\s*Content-(Type|Disposition)\s*$/i.test(h.name)) {
-        let propertyName =  h.name.split("-")[1].trim();
-        propertyName = `content${propertyName.charAt(0).toUpperCase()}${propertyName.substring(1).toLowerCase()}`;
-        this[propertyName] = h.value;
-        this.headers[propertyName] = h;
-      }
-    }
-    this.computedCharset = "";
-  }
-
-  get charset() {
-    let charset = "";
-    if (this.contentType) {
-      let m = this.contentType.match(/;\s*charset\s*=\s*(\S+)/);
-      if (m) {
-        charset = m[1];
-      }
-    }
-    Object.defineProperty(this, "charset", { value: charset, writable: false, configurable: true });
-    return this.computedCharset = charset;
-  }
-
-  decode(data) {
-    let charset = this.charset;
-    let decoder = this.createDecoder();
-    let text = decoder.decode(data, DECODER_PARAMS);
-    if (!charset && /html/i.test(this.contentType)) {
-      // missing HTTP charset, sniffing in content...
-
-      if (data[0] === BOM[0] && data[1] === BOM[1] && data[2] === BOM[2]) {
-        // forced UTF-8, nothing to do
-        return text;
-      }
-
-      // let's try figuring out the charset from <meta> tags
-      let parser = new DOMParser();
-      let doc = parser.parseFromString(text, "text/html");
-      let meta = doc.querySelectorAll('meta[charset], meta[http-equiv="content-type"], meta[content*="charset"]');
-      for (let m of meta) {
-        charset = m.getAttribute("charset");
-        if (!charset) {
-          let match = m.getAttribute("content").match(/;\s*charset\s*=\s*([\w-]+)/i)
-          if (match) charset = match[1];
-        }
-        if (charset) {
-          decoder = this.createDecoder(charset, null);
-          if (decoder) {
-            this.computedCharset = charset;
-            return decoder.decode(data, DECODER_PARAMS);
-          }
-        }
-      }
-    }
-    return text;
-  }
-
-  createDecoder(charset = this.charset, def = "latin1") {
-    if (charset) {
-      try {
-        return new TextDecoder(charset);
-      } catch (e) {
-        console.error(e);
-      }
-    }
-    return def ? new TextDecoder(def) : null;
-  }
-};
-ResponseMetaData.UTF8BOM = new Uint8Array(BOM);
-
-export default ResponseMetaData;