3 Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as published by
7 the Free Software Foundation; either version 2.1 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20 #ifndef SETTINGS_HEADER
21 #define SETTINGS_HEADER
23 #include "irrlichttypes_bloated.h"
24 #include "util/string.h"
34 extern Settings *g_settings;
35 extern std::string g_settings_path;
37 // Type for a settings changed callback function
38 typedef void (*SettingsChangedCallback)(const std::string &name, void *data);
42 SettingsChangedCallback,
45 > SettingsCallbackList;
47 typedef std::unordered_map<std::string, SettingsCallbackList> SettingsCallbackMap;
51 VALUETYPE_FLAG // Doesn't take any arguments
54 enum SettingsParseEvent {
65 ValueSpec(ValueType a_type, const char *a_help=NULL)
75 struct SettingsEntry {
78 SettingsEntry(const std::string &value_) :
82 SettingsEntry(Settings *group_) :
87 std::string value = "";
88 Settings *group = nullptr;
89 bool is_group = false;
92 typedef std::unordered_map<std::string, SettingsEntry> SettingEntries;
99 Settings & operator += (const Settings &other);
100 Settings & operator = (const Settings &other);
102 /***********************
103 * Reading and writing *
104 ***********************/
106 // Read configuration file. Returns success.
107 bool readConfigFile(const char *filename);
108 //Updates configuration file. Returns success.
109 bool updateConfigFile(const char *filename);
110 // NOTE: Types of allowed_options are ignored. Returns success.
111 bool parseCommandLine(int argc, char *argv[],
112 std::map<std::string, ValueSpec> &allowed_options);
113 bool parseConfigLines(std::istream &is, const std::string &end = "");
114 void writeLines(std::ostream &os, u32 tab_depth=0) const;
116 SettingsParseEvent parseConfigObject(const std::string &line,
117 const std::string &end, std::string &name, std::string &value);
118 bool updateConfigObject(std::istream &is, std::ostream &os,
119 const std::string &end, u32 tab_depth=0);
121 static bool checkNameValid(const std::string &name);
122 static bool checkValueValid(const std::string &value);
123 static std::string getMultiline(std::istream &is, size_t *num_lines=NULL);
124 static void printEntry(std::ostream &os, const std::string &name,
125 const SettingsEntry &entry, u32 tab_depth=0);
131 const SettingsEntry &getEntry(const std::string &name) const;
132 Settings *getGroup(const std::string &name) const;
133 const std::string &get(const std::string &name) const;
134 bool getBool(const std::string &name) const;
135 u16 getU16(const std::string &name) const;
136 s16 getS16(const std::string &name) const;
137 s32 getS32(const std::string &name) const;
138 u64 getU64(const std::string &name) const;
139 float getFloat(const std::string &name) const;
140 v2f getV2F(const std::string &name) const;
141 v3f getV3F(const std::string &name) const;
142 u32 getFlagStr(const std::string &name, const FlagDesc *flagdesc,
143 u32 *flagmask) const;
144 // N.B. if getStruct() is used to read a non-POD aggregate type,
145 // the behavior is undefined.
146 bool getStruct(const std::string &name, const std::string &format,
147 void *out, size_t olen) const;
148 bool getNoiseParams(const std::string &name, NoiseParams &np) const;
149 bool getNoiseParamsFromValue(const std::string &name, NoiseParams &np) const;
150 bool getNoiseParamsFromGroup(const std::string &name, NoiseParams &np) const;
152 // return all keys used
153 std::vector<std::string> getNames() const;
154 bool exists(const std::string &name) const;
157 /***************************************
158 * Getters that don't throw exceptions *
159 ***************************************/
161 bool getEntryNoEx(const std::string &name, SettingsEntry &val) const;
162 bool getGroupNoEx(const std::string &name, Settings *&val) const;
163 bool getNoEx(const std::string &name, std::string &val) const;
164 bool getFlag(const std::string &name) const;
165 bool getU16NoEx(const std::string &name, u16 &val) const;
166 bool getS16NoEx(const std::string &name, s16 &val) const;
167 bool getS32NoEx(const std::string &name, s32 &val) const;
168 bool getU64NoEx(const std::string &name, u64 &val) const;
169 bool getFloatNoEx(const std::string &name, float &val) const;
170 bool getV2FNoEx(const std::string &name, v2f &val) const;
171 bool getV3FNoEx(const std::string &name, v3f &val) const;
172 // N.B. getFlagStrNoEx() does not set val, but merely modifies it. Thus,
173 // val must be initialized before using getFlagStrNoEx(). The intention of
174 // this is to simplify modifying a flags field from a default value.
175 bool getFlagStrNoEx(const std::string &name, u32 &val, FlagDesc *flagdesc) const;
182 // N.B. Groups not allocated with new must be set to NULL in the settings
183 // tree before object destruction.
184 bool setEntry(const std::string &name, const void *entry,
185 bool set_group, bool set_default);
186 bool set(const std::string &name, const std::string &value);
187 bool setDefault(const std::string &name, const std::string &value);
188 bool setGroup(const std::string &name, Settings *group);
189 bool setGroupDefault(const std::string &name, Settings *group);
190 bool setBool(const std::string &name, bool value);
191 bool setS16(const std::string &name, s16 value);
192 bool setU16(const std::string &name, u16 value);
193 bool setS32(const std::string &name, s32 value);
194 bool setU64(const std::string &name, u64 value);
195 bool setFloat(const std::string &name, float value);
196 bool setV2F(const std::string &name, v2f value);
197 bool setV3F(const std::string &name, v3f value);
198 bool setFlagStr(const std::string &name, u32 flags,
199 const FlagDesc *flagdesc, u32 flagmask);
200 bool setNoiseParams(const std::string &name, const NoiseParams &np,
201 bool set_default=false);
202 // N.B. if setStruct() is used to write a non-POD aggregate type,
203 // the behavior is undefined.
204 bool setStruct(const std::string &name, const std::string &format, void *value);
207 bool remove(const std::string &name);
209 void clearDefaults();
210 void updateValue(const Settings &other, const std::string &name);
211 void update(const Settings &other);
213 void registerChangedCallback(const std::string &name,
214 SettingsChangedCallback cbf, void *userdata = NULL);
215 void deregisterChangedCallback(const std::string &name,
216 SettingsChangedCallback cbf, void *userdata = NULL);
219 void updateNoLock(const Settings &other);
221 void clearDefaultsNoLock();
223 void doCallbacks(const std::string &name) const;
225 SettingEntries m_settings;
226 SettingEntries m_defaults;
228 SettingsCallbackMap m_callbacks;
230 mutable std::mutex m_callback_mutex;
232 // All methods that access m_settings/m_defaults directly should lock this.
233 mutable std::mutex m_mutex;