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annotate mde/content/ContentLoader.d @ 150:42fb97d9ff9e

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Fix for non-debug builds. ContentLoader now always has a logger.
author Diggory Hardy <diggory.hardy@gmail.com>
date Sat, 04 Apr 2009 11:59:27 +0200
parents 9f035cd139c6
children e45226d3deae
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
137
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1 /* LICENSE BLOCK
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2 Part of mde: a Modular D game-oriented Engine
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3 Copyright © 2007-2008 Diggory Hardy
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4
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5 This program is free software: you can redistribute it and/or modify it under
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6 the terms of the GNU General Public License as published by the Free Software
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7 Foundation, either version 2 of the License, or (at your option) any later version.
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8
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9 This program is distributed in the hope that it will be useful, but WITHOUT ANY
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10 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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11 PARTICULAR PURPOSE. See the GNU General Public License for more details.
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12
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13 You should have received a copy of the GNU General Public License
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14 along with this program. If not, see <http://www.gnu.org/licenses/>. */
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15
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16 /******************************************************************************
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17 * ContentLoader handles saving and loading of all Content values, as
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18 * well as translation (loading Contents' name and desc strings from file).
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19 *
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20 * In other words, the values of Content classes automatically persist across
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21 * runs (provided save() and load() are called appropriately).
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22 * If content is created before calling load() its value is set by load(); if
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23 * it is created after, its value is set during its creation.
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24 *****************************************************************************/
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25 module mde.content.ContentLoader;
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26
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27 import mde.content.AStringContent;
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28 import mde.content.ValueCache;
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29 import mde.file.paths; // PRIORITY enum
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30 import mde.content.Translation;
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31
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32 import tango.util.log.Log : Log, Logger;
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33 private Logger logger;
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34 static this () {
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35 logger = Log.getLogger ("mde.gui.content.ContentLoader");
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36 }
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37
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38 /// Namespace for the module's functionality
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39 struct ContentLoader {
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40 private static { // Templates
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41 template ContentN(T) {
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42 static if (is(T == bool)) {
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43 const char[] ContentN = "BoolContent";
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44 } else static if (is(T == int)) {
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45 const char[] ContentN = "IntContent";
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46 } else static if (is(T == double)) {
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47 const char[] ContentN = "DoubleContent";
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48 } else static if (is(T == char[])) {
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49 const char[] ContentN = "StringContent";
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50 } else static if (is(T == enumVal)) {
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51 const char[] ContentN = "EnumContent";
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52 } else
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53 static assert (false, "No Content of type "~T.stringof);
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54 }
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55
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56 // For setting existing content; mixed in in Content.load().
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57 template setContentMixin(A...) {
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58 static if (A.length)
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59 const char[] setContentMixin =
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60 `foreach (id,val; `~ValueCache.TName!(A[0])~`Data) {
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61 auto contP = id in Content.allContent;
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62 if (contP) {
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63 `~ContentN!(A[0])~` cont = cast(`~ContentN!(A[0])~`) *contP;
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64 if (cont)
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65 cont.assignNoCng (val);
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66 }
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67 } ` ~ setContentMixin!(A[1..$]);
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68 else
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69 const char[] setContentMixin = ``;
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70 }
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71 }
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72 static:
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73 /** Loads all stored content, to an existing Content or a buffer where new
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74 * content can look up its value.
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75 *
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76 * This would normally include all options, except perhaps key bindings.
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77 *
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78 * Should only be called once. */
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79 void load () {
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80 Content.loaded.loadData (PRIORITY.HIGH_LOW);
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81 // Add locally-stored options into changes so they don't get lost when writing
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82 Content.changed.loadData (PRIORITY.HIGH_ONLY);
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83 with (Content.loaded) {
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84 mixin (setContentMixin!(ValueCache.TYPES));
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85 }
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86 }
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87
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88 /** Saves all changed content.
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89 *
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90 * May be called multiple times. */
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91 void save () {
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92 Content.changed.saveData;
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93 }
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94
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95 private:
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96 /* Load translations for all content.
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97 * Hooked as a change callback for l10n. */
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98 void translate (Content) {
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99 logger.info ("loading translations...");
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100 Translation trl = Translation.get (l10n());
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101
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102 // Translate existing content:
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103 foreach (symb, cont; Content.allContent) {
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104 auto p = symb in trl.entries;
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105 if (p)
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106 cont.name (*p);
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107 }
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108
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109 // Allow translation of new content:
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110 Content.translations = trl.entries;
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111 logger.info ("loaded translations");
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112 }
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113
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114 StringContent l10n;
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115 static this () {
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116 l10n = new StringContent ("MiscOptions.l10n");
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117 l10n.addCallback (&translate);
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118 }
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119 }