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Issue 29339112: Issue 3716 - Split up files stored in storage.local (Closed)
Patch Set: Remove the trailing comma. Created April 1, 2016, 1:14 p.m.
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1 /* 1 /*
2 * This file is part of Adblock Plus <https://adblockplus.org/>, 2 * This file is part of Adblock Plus <https://adblockplus.org/>,
3 * Copyright (C) 2006-2016 Eyeo GmbH 3 * Copyright (C) 2006-2016 Eyeo GmbH
4 * 4 *
5 * Adblock Plus is free software: you can redistribute it and/or modify 5 * Adblock Plus is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 3 as 6 * it under the terms of the GNU General Public License version 3 as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
8 * 8 *
9 * Adblock Plus is distributed in the hope that it will be useful, 9 * Adblock Plus is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details. 12 * GNU General Public License for more details.
13 * 13 *
14 * You should have received a copy of the GNU General Public License 14 * You should have received a copy of the GNU General Public License
15 * along with Adblock Plus. If not, see <http://www.gnu.org/licenses/>. 15 * along with Adblock Plus. If not, see <http://www.gnu.org/licenses/>.
16 */ 16 */
17 17
18 "use strict";
19
18 const keyPrefix = "file:"; 20 const keyPrefix = "file:";
19 21
20 function fileToKey(file) 22 function fileToKey(file, chunk)
21 { 23 {
22 return keyPrefix + (file instanceof FakeFile ? file.path : file.spec); 24 let key = keyPrefix;
25
26 if (file instanceof FakeFile)
27 key += file.path;
28 else
29 key += file.spec;
30
31 if (typeof chunk != "undefined")
32 key += ":" + chunk;
33
34 return key;
23 } 35 }
24 36
25 function loadFile(file, successCallback, errorCallback) 37 function loadFile(file)
26 { 38 {
27 let key = fileToKey(file); 39 return new Promise((resolve, reject) =>
28
29 ext.storage.get([key], function(items)
30 { 40 {
31 let entry = items[key]; 41 let key = fileToKey(file);
32 42 ext.storage.get([key], items =>
33 if (entry) 43 {
34 successCallback(entry); 44 let entry = items[key];
35 else 45 if (entry)
36 errorCallback(new Error("File doesn't exist")); 46 resolve(entry);
47 else
48 reject(new Error("File doesn't exist"));
49 });
37 }); 50 });
38 } 51 }
39 52
40 function saveFile(file, data, callback)
41 {
42 ext.storage.set(
43 fileToKey(file),
44 {
45 content: data,
46 lastModified: Date.now()
47 },
48 callback
49 );
50 }
51
52 exports.IO = 53 exports.IO =
53 { 54 {
54 resolveFilePath: function(path) 55 resolveFilePath: function(path)
55 { 56 {
56 return new FakeFile(path); 57 return new FakeFile(path);
57 }, 58 },
58 59
59 readFromFile: function(file, listener, callback) 60 readFromFile: function(file, listener, callback)
60 { 61 {
61 function onLoaded(entry) 62 function onLoaded(entry)
62 { 63 {
63 for (let line of entry.content) 64 if ("content" in entry)
64 listener.process(line); 65 {
66 for (let line of entry.content)
67 listener.process(line);
65 68
66 listener.process(null); 69 listener.process(null);
67 callback(null); 70 callback(null);
71 }
72 else
73 {
74 let keys = [];
75 for (let i = 0; i < entry.chunks; i++)
76 keys.push(fileToKey(file, i));
77
78 ext.storage.get(keys, items =>
79 {
80 for (let key of keys)
81 for (let line of items[key])
82 listener.process(line);
83
84 listener.process(null);
85 callback(null);
86 });
87 }
68 } 88 }
69 89
70 loadFile(file, onLoaded, callback); 90 loadFile(file).then(onLoaded, callback);
71 }, 91 },
72 92
73 writeToFile: function(file, data, callback) 93 writeToFile: function(file, data, callback)
74 { 94 {
75 saveFile(file, data, callback); 95 let items = {};
76 }, 96 let entry = items[fileToKey(file)] = {lastModified: Date.now()};
77 97
78 copyFile: function(fromFile, toFile, callback) 98 if (typeof browser == "object")
79 {
80 function onLoaded(entry)
81 { 99 {
82 saveFile(toFile, entry.content, callback); 100 loadFile(file).catch(() => null)
83 } 101 .then(oldEntry =>
102 {
103 let quota = 1024 * 1024 / 2 - 1000;
104 let chunks = [];
105 let chunk = [];
106 let chunkSize = 0;
84 107
85 loadFile(fromFile, onLoaded, callback); 108 for (let line of data)
86 }, 109 {
110 if (line.length + chunkSize > quota)
111 {
112 chunks.push(chunk);
113 chunk = [];
114 chunkSize = 0;
115 }
87 116
88 renameFile: function(fromFile, newName, callback) 117 chunk.push(line);
89 { 118 chunkSize += line.length;
90 function onLoaded() 119 }
91 { 120 chunks.push(chunk);
92 ext.storage.remove(fileToKey(fromFile), function() 121
93 { 122 for (let i = 0; i < chunks.length; i++)
94 ext.storage.set(keyPrefix + newName, entry, callback); 123 items[fileToKey(file, i)] = chunks[i];
124 entry.chunks = chunks.length;
125 ext.storage.set(items, callback);
126
127 if (oldEntry && "chunks" in oldEntry)
128 for (let i = entry.chunks; i < oldEntry.chunks; i++)
129 ext.storage.remove(fileToKey(file, i));
95 }); 130 });
96 } 131 }
97 132 else
98 loadFile(fromFile, onLoaded, callback); 133 {
99 }, 134 entry.content = data;
100 135 ext.storage.set(items, callback);
101 removeFile: function(file, callback) 136 }
102 {
103 ext.storage.remove(fileToKey(file), callback);
104 }, 137 },
105 138
106 statFile: function(file, callback) 139 statFile: function(file, callback)
107 { 140 {
108 function onLoaded(entry) 141 function onLoaded(entry)
109 { 142 {
110 callback(null, { 143 callback(null, {
111 exists: true, 144 exists: true,
112 lastModified: entry.lastModified 145 lastModified: entry.lastModified
113 }); 146 });
114 } 147 }
115 148
116 loadFile(file, onLoaded, callback); 149 loadFile(file).then(onLoaded, callback);
117 } 150 }
118 }; 151 };
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