comparison: src/cfg.cpp
src/cfg.cpp
- changeset 37
- c82a86ea87be
- parent 30
- 6b82f6a3ad53
- child 39
- 2c368cf5cc19
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| 36:b8fa9171be6e | 37:c82a86ea87be |
|---|---|
| 1 /* | 1 /* |
| 2 * ZCinema: Zandronum demo launcher | 2 * ZCinema: Zandronum demo launcher |
| 3 * Copyright (C) 2013 Santeri Piippo | 3 * Copyright (C) 2013-2015 Teemu Piippo |
| 4 * | 4 * |
| 5 * This program is free software: you can redistribute it and/or modify | 5 * This program is free software: you can redistribute it and/or modify |
| 6 * it under the terms of the GNU General Public License as published by | 6 * it under the terms of the GNU General Public License as published by |
| 7 * the Free Software Foundation, either version 3 of the License, or | 7 * the Free Software Foundation, either version 3 of the License, or |
| 8 * (at your option) any later version. | 8 * (at your option) any later version. |
| 14 * | 14 * |
| 15 * You should have received a copy of the GNU General Public License | 15 * You should have received a copy of the GNU General Public License |
| 16 * along with this program. If not, see <http://www.gnu.org/licenses/>. | 16 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 17 */ | 17 */ |
| 18 | 18 |
| 19 #include <cassert> | 19 #include <assert.h> |
| 20 #include <QDir> | 20 #include <QDir> |
| 21 #include <QTextStream> | 21 #include <QTextStream> |
| 22 #include <QSettings> | 22 #include <QSettings> |
| 23 #include "main.h" | 23 #include "main.h" |
| 24 #include "config.h" | 24 #include "config.h" |
| 25 | 25 |
| 26 #define MAX_CONFIG 512 | 26 typedef QMap<QString, QVariant> DefaultsMap; |
| 27 | 27 |
| 28 // ============================================================================= | 28 static QSettings* getSettingsObject() |
| 29 // ----------------------------------------------------------------------------- | 29 { |
| 30 namespace cfg { | 30 return new QSettings; |
| 31 static struct { | 31 } |
| 32 void* ptr; | 32 |
| 33 Type type; | 33 static DefaultsMap& getDefaults() |
| 34 const char* name; | 34 { |
| 35 QVariant def; | 35 static DefaultsMap defaults; |
| 36 } g_configData[MAX_CONFIG]; | 36 |
| 37 | 37 if (defaults.isEmpty()) |
| 38 static int g_cfgDataCursor = 0; | 38 { |
| 39 | 39 // Initialize defaults here. |
| 40 #define CASE(T) case T##Type: return QVariant (*(reinterpret_cast<T*> (ptr))); | |
| 41 static QVariant getConfigValue (void* ptr, Type type) { | |
| 42 switch (type) { | |
| 43 CASE (Int) | |
| 44 CASE (String) | |
| 45 CASE (Float) | |
| 46 CASE (Bool) | |
| 47 CASE (List) | |
| 48 CASE (Map) | |
| 49 | |
| 50 case KeySeqType: | |
| 51 return QVariant (reinterpret_cast<KeySeq*> (ptr)->toString()); | |
| 52 } | |
| 53 | |
| 54 assert (false); | |
| 55 return QVariant(); | |
| 56 } | |
| 57 #undef CASE | |
| 58 | |
| 59 #define CASE(T, METHOD) case T##Type: (*(reinterpret_cast<T*> (ptr))) = val.METHOD(); return; | |
| 60 static void setConfigValue (void* ptr, Type type, const QVariant& val) { | |
| 61 switch (type) { | |
| 62 CASE (Int, toInt) | |
| 63 CASE (String, toString) | |
| 64 CASE (Float, toFloat) | |
| 65 CASE (Bool, toBool) | |
| 66 CASE (List, toList) | |
| 67 CASE (Map, toMap) | |
| 68 | |
| 69 case KeySeqType: | |
| 70 reinterpret_cast<KeySeq*> (ptr)->fromString (val.toString()); | |
| 71 break; | |
| 72 } | |
| 73 } | |
| 74 | |
| 75 // ============================================================================= | |
| 76 // Get the QSettings object. | |
| 77 // ----------------------------------------------------------------------------- | |
| 78 static QSettings* getSettingsObject() { | |
| 79 return new QSettings; | |
| 80 } | |
| 81 | |
| 82 // ============================================================================= | |
| 83 // Load the configuration from file | |
| 84 // ----------------------------------------------------------------------------- | |
| 85 bool load() { | |
| 86 QSettings* settings = getSettingsObject(); | |
| 87 print ("config::load: Loading configuration file from %1\n", settings->fileName()); | |
| 88 | |
| 89 for (alias i : g_configData) { | |
| 90 if (i.name == null) | |
| 91 break; | |
| 92 | |
| 93 setConfigValue (i.ptr, i.type, settings->value (i.name, i.def)); | |
| 94 } | |
| 95 | |
| 96 settings->deleteLater(); | |
| 97 return true; | |
| 98 } | |
| 99 | |
| 100 // ============================================================================= | |
| 101 // Save the configuration to disk | |
| 102 // ----------------------------------------------------------------------------- | |
| 103 bool save() { | |
| 104 QSettings* settings = getSettingsObject(); | |
| 105 settings->clear(); | |
| 106 print ("Saving configuration to %1...\n", settings->fileName()); | |
| 107 | |
| 108 for (alias i : g_configData) { | |
| 109 if (i.name == null) | |
| 110 break; | |
| 111 | |
| 112 QVariant val = getConfigValue (i.ptr, i.type); | |
| 113 | |
| 114 if (val == i.def) | |
| 115 continue; | |
| 116 | |
| 117 settings->setValue (i.name, val); | |
| 118 } | |
| 119 | |
| 120 settings->sync(); | |
| 121 settings->deleteLater(); | |
| 122 return true; | |
| 123 } | |
| 124 | |
| 125 // ============================================================================= | |
| 126 // Reset configuration defaults. | |
| 127 // ----------------------------------------------------------------------------- | |
| 128 void reset() { | |
| 129 for (alias i : g_configData) { | |
| 130 if (i.name == null) | |
| 131 break; | |
| 132 | |
| 133 setConfigValue (i.ptr, i.type, i.def); | |
| 134 } | |
| 135 } | 40 } |
| 136 | 41 |
| 137 // ============================================================================= | 42 return defaults; |
| 138 // We cannot just add config objects to a list or vector because that would rely | |
| 139 // on the vector's c-tor being called before the configs' c-tors. With global | |
| 140 // variables we cannot assume that!! Therefore we need to use a C-style array here. | |
| 141 // ----------------------------------------------------------------------------- | |
| 142 ConfigAdder::ConfigAdder (void* ptr, Type type, const char* name, QVariant def) { | |
| 143 if (g_cfgDataCursor == 0) | |
| 144 memset (g_configData, 0, sizeof g_configData); | |
| 145 | |
| 146 assert (g_cfgDataCursor < MAX_CONFIG); | |
| 147 alias i = g_configData[g_cfgDataCursor++]; | |
| 148 i.ptr = ptr; | |
| 149 i.type = type; | |
| 150 i.name = name; | |
| 151 i.def = def; | |
| 152 } | |
| 153 } | 43 } |
| 44 | |
| 45 void Config::reset() | |
| 46 { | |
| 47 DefaultsMap& defaults = getDefaults(); | |
| 48 | |
| 49 for (DefaultsMap::iterator it = defaults.begin(); it != defaults.end(); ++it) | |
| 50 set (it.key(), it.value()); | |
| 51 } | |
| 52 | |
| 53 QVariant Config::get (const QString& name) | |
| 54 { | |
| 55 QSettings* settings = getSettingsObject(); | |
| 56 DefaultsMap& defaults = getDefaults(); | |
| 57 DefaultsMap::iterator it = defaults.find (name); | |
| 58 QVariant def = it != defaults.end() ? *it : QVariant(); | |
| 59 QVariant value = settings->value (name, def); | |
| 60 settings->deleteLater(); | |
| 61 return value; | |
| 62 } | |
| 63 | |
| 64 bool Config::set (const QString& name, const QVariant& value) | |
| 65 { | |
| 66 QSettings* settings = getSettingsObject(); | |
| 67 settings->setValue (name, value); | |
| 68 settings->deleteLater(); | |
| 69 return settings->status() == QSettings::NoError; | |
| 70 } |
