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Issue 16067002: Added Safari Support (Closed)
Patch Set: Made description for Safari long again. The 100 char limit given by the extension builder doesn't a… Created Oct. 31, 2013, 2:12 p.m.
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1 /*
2 * This file is part of Adblock Plus <http://adblockplus.org/>,
3 * Copyright (C) 2006-2013 Eyeo GmbH
4 *
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
7 * published by the Free Software Foundation.
8 *
9 * Adblock Plus is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
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/>.
16 */
17
18 //
19 // No direct file system access, using WebSQL API
20 //
21
22 var IO = exports.IO =
23 {
24 _db: null,
25 lineBreak: "\n",
26
27 _transaction: function(callback)
28 {
29 var dbCreated = false;
30 if (!this._db)
31 this._db = openDatabase("adblockplus", "1.0", "", 102400, function() { dbC reated = true; });
32
33 this._db.transaction(function(tx)
34 {
35 if (dbCreated)
36 tx.executeSql("CREATE TABLE files (path unique, last_modified, content)" );
37
38 callback(tx);
39 });
40 },
41 _getFilePath: function(file)
42 {
43 if (file instanceof FakeFile)
44 return file.path;
45 if ("spec" in file)
46 return file.spec;
47
48 throw new Error("Unexpected file type");
49 },
50 resolveFilePath: function(path)
51 {
52 return new FakeFile(path);
53 },
54 readFromFile: function(file, decode, listener, callback, timeLineID)
55 {
56 if ("spec" in file && /^defaults\b/.test(file.spec))
57 {
58 // Code attempts to read the default patterns.ini, we don't have that.
59 // Make sure to execute first-run actions instead.
60 callback(null);
61 if (localStorage.currentVersion)
62 seenDataCorruption = true;
63 delete localStorage.currentVersion;
64 return;
65 }
66
67 var path = this._getFilePath(file);
68 var runAsync = require("utils").Utils.runAsync;
69
70 this._transaction(function(tx)
71 {
72 tx.executeSql(
73 "SELECT content FROM files WHERE path = ?",
74 [path],
75 function(tx, results)
76 {
77 if (results.rows.length == 0)
78 {
79 runAsync(callback, null, new Error("File doesn't exist"));
80 return;
81 }
82
83 var lines = results.rows.item(0).content.split(/[\r\n]+/);
84 runAsync(function()
85 {
86 for (var i = 0; i < lines.length; i++)
87 listener.process(lines[i]);
88 listener.process(null);
89 callback(null);
90 });
91 }
92 );
93 });
94 },
95 writeToFile: function(file, encode, data, callback, timeLineID)
96 {
97 var path = this._getFilePath(file);
98 var lnbr = this.lineBreak;
99 var runAsync = require("utils").Utils.runAsync;
100
101 this._transaction(function(tx)
102 {
103 tx.executeSql(
104 "INSERT OR REPLACE INTO files VALUES (?, ?, ?)",
105 [path, Date.now(), data.join(lnbr) + lnbr],
106 function() { runAsync(callback, null, null); }
107 );
108 });
109 },
110 copyFile: function(fromFile, toFile, callback)
111 {
112 var fromPath = this._getFilePath(fromFile);
113 var toPath = this._getFilePath(toFile);
114 var runAsync = require("utils").Utils.runAsync;
115
116 this._transaction(function(tx)
117 {
118 tx.executeSql(
119 "INSERT OR REPLACE INTO files SELECT ?, ?, content FROM files WHERE path = ?",
120 [toPath, Date.now(), fromPath],
121 function(tx, results)
122 {
123 if (results.rowsAffected == 0)
124 runAsync(callback, null, new Error("File doesn't exist"));
125 else
126 runAsync(callback, null, null);
127 }
128 );
129 });
130 },
131 renameFile: function(fromFile, newName, callback)
132 {
133 var path = this._getFilePath(fromFile);
134 var runAsync = require("utils").Utils.runAsync;
135
136 this._transaction(function(tx)
137 {
138 tx.executeSql(
139 "UPDATE files SET path = ? WHERE path = ?",
140 [newName, path],
141 function(tx, results)
142 {
143 if (results.rowsAffected == 0)
144 runAsync(callback, null, new Error("File doesn't exist"));
145 else
146 runAsync(callback, null, null);
147 }
148 );
149 });
150 },
151 removeFile: function(file, callback)
152 {
153 var path = this._getFilePath(file);
154 var runAsync = require("utils").Utils.runAsync;
155
156 this._transaction(function(tx)
157 {
158 tx.executeSql(
159 "DELETE FROM files WHERE path = ?",
160 [path],
161 function() { runAsync(callback, null, null); }
162 );
163 });
164 },
165 statFile: function(file, callback)
166 {
167 var path = this._getFilePath(file);
168 var runAsync = require("utils").Utils.runAsync;
169
170 this._transaction(function(tx)
171 {
172 tx.executeSql(
173 "SELECT last_modified FROM files WHERE path = ?",
174 [path],
175 function(tx, results)
176 {
177 if (results.rows.length == 0)
178 runAsync(callback, null, null, {
179 exists: false,
180 isDirectory: false,
181 isFile: false,
182 lastModified: 0
183 });
184 else
185 runAsync(callback, null, null, {
186 exists: true,
187 isDirectory: false,
188 isFile: true,
189 lastModified: results.rows.item(0).last_modified
190 });
191 }
192 );
193 });
194 }
195 };
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