addon-sdk/source/lib/sdk/io/data.js@6474c204b198
addon-sdk/source/lib/sdk/io/data.js
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
1 /* This Source Code Form is subject to the terms of the Mozilla Public
2 * License, v. 2.0. If a copy of the MPL was not distributed with this
3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
5 "use strict";
7 module.metadata = {
8 "stability": "unstable"
9 };
11 const { Cc, Ci, Cu } = require("chrome");
12 const base64 = require("../base64");
13 const IOService = Cc["@mozilla.org/network/io-service;1"].
14 getService(Ci.nsIIOService);
16 const { deprecateFunction } = require('../util/deprecate');
17 const { NetUtil } = Cu.import("resource://gre/modules/NetUtil.jsm");
18 const FaviconService = Cc["@mozilla.org/browser/favicon-service;1"].
19 getService(Ci.nsIFaviconService);
21 const PNG_B64 = "data:image/png;base64,";
22 const DEF_FAVICON_URI = "chrome://mozapps/skin/places/defaultFavicon.png";
23 let DEF_FAVICON = null;
25 /**
26 * Takes URI of the page and returns associated favicon URI.
27 * If page under passed uri has no favicon then base64 encoded data URI of
28 * default faveicon is returned.
29 * @param {String} uri
30 * @returns {String}
31 */
32 function getFaviconURIForLocation(uri) {
33 let pageURI = NetUtil.newURI(uri);
34 try {
35 return FaviconService.getFaviconDataAsDataURL(
36 FaviconService.getFaviconForPage(pageURI));
37 }
38 catch(e) {
39 if (!DEF_FAVICON) {
40 DEF_FAVICON = PNG_B64 +
41 base64.encode(getChromeURIContent(DEF_FAVICON_URI));
42 }
43 return DEF_FAVICON;
44 }
45 }
46 exports.getFaviconURIForLocation = getFaviconURIForLocation;
48 /**
49 * Takes chrome URI and returns content under that URI.
50 * @param {String} chromeURI
51 * @returns {String}
52 */
53 function getChromeURIContent(chromeURI) {
54 let channel = IOService.newChannel(chromeURI, null, null);
55 let input = channel.open();
56 let stream = Cc["@mozilla.org/binaryinputstream;1"].
57 createInstance(Ci.nsIBinaryInputStream);
58 stream.setInputStream(input);
59 let content = stream.readBytes(input.available());
60 stream.close();
61 input.close();
62 return content;
63 }
64 exports.getChromeURIContent = deprecateFunction(getChromeURIContent,
65 'getChromeURIContent is deprecated, ' +
66 'please use require("sdk/net/url").readURI instead.'
67 );
69 /**
70 * Creates a base-64 encoded ASCII string from a string of binary data.
71 */
72 exports.base64Encode = deprecateFunction(base64.encode,
73 'base64Encode is deprecated, ' +
74 'please use require("sdk/base64").encode instead.'
75 );
76 /**
77 * Decodes a string of data which has been encoded using base-64 encoding.
78 */
79 exports.base64Decode = deprecateFunction(base64.decode,
80 'base64Dencode is deprecated, ' +
81 'please use require("sdk/base64").decode instead.'
82 );
