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configprofiles.cpp
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configprofiles.cpp
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/** @file configprofiles.cpp Configuration setting profiles.
*
* @authors Copyright (c) 2013-2017 Jaakko Keränen <jaakko.keranen@iki.fi>
*
* @par License
* GPL: http://www.gnu.org/licenses/gpl.html
*
* <small>This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. This program is distributed in the hope that it
* will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
* Public License for more details. You should have received a copy of the GNU
* General Public License along with this program; if not, see:
* http://www.gnu.org/licenses</small>
*/
#include "de_platform.h"
#include "api_console.h"
#include "ConfigProfiles"
#include <de/App>
#include <de/Config>
#include <de/Info>
#include <de/NumberValue>
#include <de/Process>
#include <de/RecordValue>
#include <de/Script>
#include <de/TextValue>
#include <de/ZipArchive>
#include <doomsday/doomsdayapp.h>
#include <doomsday/Game>
#include <QMap>
#include <QList>
#include <QTextStream>
using namespace de;
static String const CUSTOM_PROFILE = "Custom";
DENG2_PIMPL(ConfigProfiles)
, DENG2_OBSERVES(DoomsdayApp, GameUnload)
, DENG2_OBSERVES(DoomsdayApp, GameChange)
{
struct Setting
{
SettingType type;
String name;
Setting() : type(IntCVar) {}
Setting(SettingType t, String n) : type(t), name(n) {}
/**
* Changes the current value of the setting.
*
* @param val New value.
*/
void setValue(QVariant const &val) const
{
switch (type)
{
case IntCVar:
Con_SetInteger(name.toLatin1(), val.toInt());
break;
case FloatCVar:
Con_SetFloat(name.toLatin1(), val.toFloat());
break;
case StringCVar:
Con_SetString(name.toLatin1(), val.toString().toUtf8());
break;
case ConfigVariable:
if (!qstrcmp(val.typeName(), "QString"))
{
Config::get(name).set(TextValue(val.toString()));
}
else
{
Config::get(name).set(NumberValue(val.toDouble()));
}
break;
}
}
};
typedef QMap<String, Setting> Settings;
Settings settings;
struct Profile : public Profiles::AbstractProfile
{
typedef QMap<String, QVariant> Values;
Values values;
ConfigProfiles &owner()
{
return static_cast<ConfigProfiles &>(AbstractProfile::owner());
}
ConfigProfiles const &owner() const
{
return static_cast<ConfigProfiles const &>(AbstractProfile::owner());
}
bool resetToDefaults() override
{
if (!isReadOnly())
{
values = owner().d->defaults.values;
return true;
}
return false;
}
String toInfoSource() const override
{
auto const &settings = owner().d->settings;
String info;
QTextStream os(&info);
os.setCodec("UTF-8");
DENG2_FOR_EACH_CONST(Values, val, values)
{
DENG2_ASSERT(settings.contains(val.key()));
Setting const &st = settings[val.key()];
String valueText;
switch (st.type)
{
case IntCVar:
case FloatCVar:
case StringCVar:
case ConfigVariable:
// QVariant can handle this.
valueText = val.value().toString();
break;
}
if (!info.isEmpty()) os << "\n";
os << "setting \"" << st.name << "\" {\n"
<< " value: " << valueText << "\n"
<< "}";
}
return info;
}
void initializeFromInfoBlock(ConfigProfiles const &profs,
de::Info::BlockElement const &block)
{
// Use the default settings for anything not defined in the file.
values = profs.d->defaults.values;
// Read all the setting values from the profile block.
foreach (auto const *element, block.contentsInOrder())
{
if (!element->isBlock()) continue;
de::Info::BlockElement const &setBlock = element->as<de::Info::BlockElement>();
// Only process known settings.
if (setBlock.blockType() == "setting" &&
profs.d->settings.contains(setBlock.name()))
{
values[setBlock.name()] =
profs.d->textToSettingValue(setBlock.keyValue("value").text,
setBlock.name());
}
}
}
};
Profile defaults;
String current;
Impl(Public *i) : Base(i), current(CUSTOM_PROFILE)
{
DoomsdayApp::app().audienceForGameUnload() += this;
DoomsdayApp::app().audienceForGameChange() += this;
addProfile(current);
}
Profile *addProfile(String const &name)
{
Profile *prof = new Profile;
prof->setName(name);
self().add(prof);
return prof;
}
Profile *tryFind(String const &name) const
{
return maybeAs<Profile>(self().tryFind(name));
}
Profile ¤tProfile() const
{
return self().find(current).as<Profile>();
}
QVariant getDefaultFromConfig(String const &name)
{
try
{
// Get defaults for script values.
Script script("record d; import Config; Config.setDefaults(d); d");
Process proc(script);
proc.execute();
Record const &confDefaults = *proc.context().evaluator().result()
.as<RecordValue>().record();
DENG2_ASSERT(confDefaults.has(name));
Variable const &var = confDefaults[name];
if (is<NumberValue>(var.value()))
{
return var.value().asNumber();
}
else if (is<TextValue>(var.value()))
{
return var.value().asText();
}
else
{
// Oops, we don't support this yet.
DENG2_ASSERT(false);
}
}
catch (Error const &er)
{
LOG_WARNING("Failed to find default for \"%s\": %s") << name << er.asText();
}
return QVariant();
}
/**
* Gets the current values of the settings and saves them to a profile.
*/
void fetch(String const &profileName)
{
Profile &prof = self().find(profileName).as<Profile>();
if (prof.isReadOnly()) return;
foreach (Setting const &st, settings.values())
{
QVariant val;
switch (st.type)
{
case IntCVar:
val = Con_GetInteger(st.name.toLatin1());
break;
case FloatCVar:
val = Con_GetFloat(st.name.toLatin1());
break;
case StringCVar:
val = QString(Con_GetString(st.name.toLatin1()));
break;
case ConfigVariable: {
Value const &cfgValue = Config::get(st.name).value();
if (is<NumberValue>(cfgValue))
{
val = cfgValue.asNumber();
}
else
{
val = cfgValue.asText();
}
break; }
}
prof.values[st.name] = val;
}
}
void setCurrent(String const &name)
{
current = name;
if (!self().persistentName().isEmpty())
{
App::config().set(configVarName(), name);
}
}
void apply(String const &profileName)
{
Profile &profile = self().find(profileName).as<Profile>();
foreach (Setting const &st, settings.values())
{
QVariant const &val = profile.values[st.name];
st.setValue(val);
}
}
void changeTo(String const &profileName)
{
LOG_AS("ConfigProfiles");
DENG2_ASSERT(tryFind(profileName));
if (current == profileName) return;
if (!self().persistentName().isEmpty())
{
LOG_MSG("Changing %s profile to '%s'") << self().persistentName() << profileName;
}
// First update the old profile.
fetch(current);
// Then set the values from the other profile.
setCurrent(profileName);
apply(current);
DENG2_FOR_PUBLIC_AUDIENCE(ProfileChange, i)
{
i->currentProfileChanged(profileName);
}
}
void reset()
{
if (currentProfile().resetToDefaults())
{
apply(current);
}
}
void resetSetting(String const &settingName) const
{
DENG2_ASSERT(settings.contains(settingName));
DENG2_ASSERT(defaults.values.contains(settingName));
settings[settingName].setValue(defaults.values[settingName]);
}
/**
* For a persistent register, determines the name of the Config variable
* that stores the name of the currently selected profile.
*/
String configVarName() const
{
if (self().persistentName().isEmpty()) return "";
return self().persistentName().concatenateMember("profile");
}
QVariant textToSettingValue(String const &text, String const &settingName) const
{
DENG2_ASSERT(settings.contains(settingName));
Setting const &st = settings[settingName];
switch (st.type)
{
case IntCVar:
return text.toInt();
case FloatCVar:
return text.toFloat();
case StringCVar:
return text;
case ConfigVariable:
return text.toDouble();
}
DENG2_ASSERT(false);
return QVariant();
}
bool addCustomProfileIfMissing()
{
if (!tryFind(CUSTOM_PROFILE))
{
addProfile(CUSTOM_PROFILE);
// Use whatever values are currently in effect.
fetch(CUSTOM_PROFILE);
return true;
}
return false; // nothing added
}
/**
* Deserializes all the profiles (see aboutToUnloadGame()). In addition,
* fixed/built-in profiles are loaded from /data/profiles/(persistentName)/
*
* @param newGame New current game.
*/
void currentGameChanged(Game const &newGame)
{
if (!self().isPersistent() || newGame.isNull()) return;
LOG_AS("ConfigProfiles");
LOG_DEBUG("Game has been loaded, deserializing %s profiles") << self().persistentName();
self().deserialize();
// Settings haven't previously been created -- make sure we at least
// have the Custom profile.
if (addCustomProfileIfMissing())
{
current = CUSTOM_PROFILE;
}
// Update current profile.
current = App::config().gets(configVarName(), current);
if (!tryFind(current))
{
// Fall back to the one profile we know is available.
if (tryFind(CUSTOM_PROFILE))
{
current = CUSTOM_PROFILE;
}
else
{
current = self().profiles().first();
}
}
// Make sure these are the values now in use.
apply(current);
App::config().set(configVarName(), current);
}
/**
* Serializes all the profiles:
* - Config.(persistentName).profile stores the name of the current profile
* - /home/configs/(persistentName).dei contains all the existing profile
* values, with one file per profile
*
* @param gameBeingUnloaded Current game.
*/
void aboutToUnloadGame(Game const &gameBeingUnloaded)
{
if (!self().isPersistent() || gameBeingUnloaded.isNull()) return;
LOG_AS("ConfigProfiles");
LOG_DEBUG("Game being unloaded, serializing %s profiles") << self().persistentName();
// Update the current profile.
fetch(current);
// Remember which profile is the current one.
App::config().set(configVarName(), current);
self().serialize();
}
};
ConfigProfiles::ConfigProfiles() : d(new Impl(this))
{}
ConfigProfiles &ConfigProfiles::define(SettingType type,
String const &settingName,
QVariant const &defaultValue)
{
d->settings.insert(settingName, Impl::Setting(type, settingName));
QVariant def;
if (type == ConfigVariable)
{
def = d->getDefaultFromConfig(settingName);
}
else
{
def = defaultValue;
}
d->defaults.values[settingName] = def;
return *this;
}
String ConfigProfiles::currentProfile() const
{
return d->current;
}
bool ConfigProfiles::saveAsProfile(String const &name)
{
if (!tryFind(name) && !name.isEmpty())
{
d->addProfile(name);
d->fetch(name);
return true;
}
return false;
}
void ConfigProfiles::setProfile(String const &name)
{
d->changeTo(name);
}
void ConfigProfiles::resetToDefaults()
{
d->reset();
DENG2_FOR_AUDIENCE(ProfileChange, i)
{
i->currentProfileChanged(d->current);
}
}
void ConfigProfiles::resetSettingToDefaults(String const &settingName)
{
d->resetSetting(settingName);
}
bool ConfigProfiles::rename(String const &name)
{
if (d->currentProfile().setName(name))
{
d->setCurrent(name);
DENG2_FOR_AUDIENCE(ProfileChange, i)
{
i->currentProfileChanged(name);
}
return true;
}
return false;
}
void ConfigProfiles::deleteProfile(String const &name)
{
// Can't delete the current profile.
if (name == d->current) return;
if (auto *prof = tryFind(name))
{
remove(*prof);
delete prof;
}
}
Profiles::AbstractProfile *
ConfigProfiles::profileFromInfoBlock(de::Info::BlockElement const &block)
{
std::unique_ptr<Impl::Profile> prof(new Impl::Profile);
prof->initializeFromInfoBlock(*this, block);
return prof.release();
}