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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 'use strict'; | |
6 | |
7 /** | |
8 * @param {MetadataDispatcher} parent Parent object. | |
9 * @param {string} type Parser type. | |
10 * @param {RegExp} urlFilter RegExp to match URLs. | |
11 * @constructor | |
12 */ | |
13 function MetadataParser(parent, type, urlFilter) { | |
14 this.parent_ = parent; | |
15 this.type = type; | |
16 this.urlFilter = urlFilter; | |
17 this.verbose = parent.verbose; | |
18 this.mimeType = 'unknown'; | |
19 } | |
20 | |
21 /** | |
22 * Output an error message. | |
23 * @param {...Object} var_args Arguments. | |
24 */ | |
25 MetadataParser.prototype.error = function(var_args) { | |
26 this.parent_.error.apply(this.parent_, arguments); | |
27 }; | |
28 | |
29 /** | |
30 * Output a log message. | |
31 * @param {...Object} var_args Arguments. | |
32 */ | |
33 MetadataParser.prototype.log = function(var_args) { | |
34 this.parent_.log.apply(this.parent_, arguments); | |
35 }; | |
36 | |
37 /** | |
38 * Output a log message if |verbose| flag is on. | |
39 * @param {...Object} var_args Arguments. | |
40 */ | |
41 MetadataParser.prototype.vlog = function(var_args) { | |
42 if (this.verbose) | |
43 this.parent_.log.apply(this.parent_, arguments); | |
44 }; | |
45 | |
46 /** | |
47 * @return {Object} Metadata object with the minimal set of properties. | |
48 */ | |
49 MetadataParser.prototype.createDefaultMetadata = function() { | |
50 return { | |
51 type: this.type, | |
52 mimeType: this.mimeType | |
53 }; | |
54 }; | |
55 | |
56 /* Base class for image metadata parsers */ | |
57 function ImageParser(parent, type, urlFilter) { | |
58 MetadataParser.apply(this, arguments); | |
59 this.mimeType = 'image/' + this.type; | |
60 } | |
61 | |
62 ImageParser.prototype = {__proto__: MetadataParser.prototype}; | |
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