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annotate backends/file.js @ 57:addbf6bbfaa8

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Various fixes for the migration to ltx.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Mon, 12 Sep 2011 23:45:00 +0200
parents 99bd1d1ac071
children
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1 /*
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2 * Copyright (C) 2010 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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3 *
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4 * This file is part of PSĜS, a PubSub server written in JavaScript.
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5 *
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6 * PSĜS is free software: you can redistribute it and/or modify
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7 * it under the terms of the GNU Affero General Public License as
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8 * published by the Free Software Foundation, either version 3 of the
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9 * License.
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10 *
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11 * PSĜS is distributed in the hope that it will be useful,
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 * GNU Affero General Public License for more details.
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15 *
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16 * You should have received a copy of the GNU Affero General Public License
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17 * along with PSĜS. If not, see <http://www.gnu.org/licenses/>.
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18 */
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19
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20 'use strict';
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21
27
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22 var fs = require('fs');
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23 var Node = require('../nodes').Node;
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24 var backend = exports;
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25
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26 backend.save = function(file) {
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27 function sanitize(o) {
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28 var n = {};
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29 for (var i in o) {
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30 if (i == 'content' || o[i].setFromISO8601)
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31 n[i] = o[i].toString();
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32 else if (o[i] instanceof Array)
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33 n[i] = o[i];
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34 else if (typeof o[i] == 'object')
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35 n[i] = sanitize(o[i]);
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36 else if (typeof o[i] == 'function')
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37 ;
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38 else
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39 n[i] = o[i];
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40 }
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41 return n;
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42 }
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43
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44 var data = sanitize(backend.list);
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45
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46 if (!file)
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47 file = 'save.json';
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48
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49 fs.writeFile(file, require('sys').inspect(data, null, null));
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50 }
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51
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52 backend.load = function(file) {
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53 var parse = require('ltx').parse;
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54 function endParsing(o) {
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55 var regexp = /\d{4}-\d\d-\d\dT\d\d:\d\d:\d\dZ/;
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56 for (var i in o) {
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57 if (typeof o[i] == 'string' && i == 'content')
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58 o[i] = parse(o[i]);
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59 else if (typeof o[i] == 'string' && regexp(o[i])) {
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60 var today = new Date();
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61 today.setFromISO8601(o[i]);
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62 o[i] = today;
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63 } else if (typeof o[i] == 'object')
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64 endParsing(o[i]);
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65 }
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66 return o;
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67 }
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68
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69 if (!file)
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70 file = 'save.json';
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71
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72 fs.stat(file, function(err, stats) {
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73 if (err)
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74 fs.writeFileSync(file, '{}');
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75 else if (!stats.isFile()) {
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76 console.log('\x1b[1;41mThe file “' + file + '” isn’t a regular file. Exiting.\x1b[0m');
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77 process.exit(1);
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78 }
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79
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80 var data = fs.readFileSync(file);
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81 var obj = eval('('+data+')');
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82 backend.list = endParsing(obj);
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83
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84 for (var i in backend.list)
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85 for (var j in Node.prototype)
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86 backend.list[i][j] = Node.prototype[j];
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87 });
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88 }