1 /* ***** BEGIN LICENSE BLOCK *****
2 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
3 *
4 * The contents of this file are subject to the Mozilla Public License Version
5 * 1.1 (the "License"); you may not use this file except in compliance with
6 * the License. You may obtain a copy of the License at
7 * http://www.mozilla.org/MPL/
8 *
9 * Software distributed under the License is distributed on an "AS IS" basis,
10 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
11 * for the specific language governing rights and limitations under the
12 * License.
13 *
14 * The Initial Developer of the Original Code is Fireinput Inc.
15 *
16 * Portions created by the Initial Developer are Copyright (C) 2007
17 * the Initial Developer. All Rights Reserved.
18 *
19 * Contributor(s):
20 * Olly Ja <ollyja@gmail.com>
21 *
22 * Alternatively, the contents of this file may be used under the terms of
23 * either the GNU General Public License Version 2 or later (the "GPL"), or
24 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
25 * in which case the provisions of the GPL or the LGPL are applicable instead
26 * of those above. If you wish to allow use of your version of this file only
27 * under the terms of either the GPL or the LGPL, and not to allow others to
28 * use your version of this file under the terms of the MPL, indicate your
29 * decision by deleting the provisions above and replace them with the notice
30 * and other provisions required by the GPL or the LGPL. If you do not delete
31 * the provisions above, a recipient may use your version of this file under
32 * the terms of any one of the MPL, the GPL or the LGPL.
33 *
34 * ***** END LICENSE BLOCK *****
35 */
36
37 var FireinputSaver =
38 {
39 debug: 1,
40
41 init: function()
42 {
43 var ios = FireinputXPC.getIOService();
44 var fileHandler = ios.getProtocolHandler("file")
45 .QueryInterface(Components.interfaces.nsIFileProtocolHandler);
46
47 var IME = new FireinputIME();
48 var path = FireinputUtils.getAppRootPath() + IME.getUserDataFile();
49 var datafile = fileHandler.getFileFromURLSpec(path);
50 return datafile;
51 },
52
53
54 save: function()
55 {
56 var args = arguments;
57
58 if(!args || args.length <= 0)
59 return;
60
61 // FIXME: the backfile is required for safe writing
62
63 var fos = Components.classes["@mozilla.org/network/file-output-stream;1"]
64 .createInstance(Components.interfaces.nsIFileOutputStream);
65
66 var file = this.init();
67 // use 0x02 | 0x10 to open file for appending.
68 // write, create, truncate
69 fos.init(file, 0x02 | 0x08 | 0x20, 0664, 0);
70
71 var charset = "UTF-8";
72 var cos = Components.classes["@mozilla.org/intl/converter-output-stream;1"]
73 .createInstance(Components.interfaces.nsIConverterOutputStream);
74
75 // This assumes that fos is the nsIOutputStream you want to write to
76 cos.init(fos, charset, 0, 0x0000);
77
78 var self = this;
79
80 // if the user saved list is growing up quickly, the filter needs to be enable to remove
81 // the less frequent words
82 for(var i=args.length-1; i>=0; i--)
83 {
84 if(!args[i])
85 continue;
86 // the mininum list we keep is to have 5000 entries
87 var filter = parseInt(args[i].length/5000) -1;
88 filter = filter > 0 ? filter : 0;
89
90 var wStr = [];
91 args[i].foreach(function(key, value) {
92 var compactStr = self.getString(key, value, filter);
93 if(compactStr)
94 wStr[wStr.length] = compactStr;
95
96 if(wStr.length >= 20)
97 {
98 cos.writeString(wStr.join(""));
99 wStr.length = 0;
100 }
101 });
102 // write all that are left
103 if(wStr.length >0)
104 {
105 cos.writeString(wStr.join(""));
106 wStr.length = 0;
107 }
108 }
109
110 cos.close();
111 },
112
113 getString: function(key, value, filter)
114 {
115 var used = parseInt(value.freq / Math.pow(2, 16));
116
117 // if it's not new phrase, and the used times is smaller than filter
118 // it will be skipped to save some memory
119 if((typeof(value.newPhrase) == 'undefined') && used < filter)
120 {
121 return null;
122 }
123
124 var str = value.schema;
125 var wordKey = key.split(":");
126 str += ":" + wordKey[0];
127 str += ":" + value.freq;
128 str += ":" + wordKey[1];
129 str += ":" + value.initKey;
130 if(typeof(value.newPhrase) != 'undefined')
131 str += ":1"
132
133 str += "\n";
134 return FireinputUnicode.getUnicodeString(str);
135 }
136
137 };
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