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rstudio/src/cpp/core/Settings.cpp at master · UXScripts/rstudio · GitHub
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/*
* Settings.cpp
*
* Copyright (C) 2009-12 by RStudio, Inc.
*
* This program is licensed to you under the terms of version 3 of the
* GNU Affero General Public License. This program is distributed WITHOUT
* ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING THOSE OF NON-INFRINGEMENT,
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Please refer to the
* AGPL (http://www.gnu.org/licenses/agpl-3.0.txt) for more details.
*
*/
#
include
<
core/Settings.hpp
>
#
include
<
boost/lexical_cast.hpp
>
#
include
<
core/Log.hpp
>
#
include
<
core/FilePath.hpp
>
#
include
<
core/SafeConvert.hpp
>
#
include
<
core/FileSerializer.hpp
>
namespace
core
{
Settings::Settings
()
: updatePending_(
false
),
isDirty_
(
false
)
{
}
Settings::~Settings
()
{
}
Error
Settings::initialize
(
const
FilePath& filePath)
{
settingsFile_ = filePath ;
settingsMap_.
clear
() ;
Error error =
core::readStringMapFromFile
(settingsFile_, &settingsMap_) ;
if
(error)
{
//
we don't consider file-not-found and error because it is a
//
common initialization case
if
(error.
code
() != boost::system::errc::no_such_file_or_directory)
{
error.
addProperty
(
"
settings-file
"
, settingsFile_);
return
error ;
}
}
return
Success
() ;
}
void
Settings::set
(
const
std::string& name,
const
std::string& value)
{
if
(value != settingsMap_[name])
{
settingsMap_[name] = value ;
isDirty_ =
true
;
if
(!updatePending_)
writeSettings
() ;
}
}
void
Settings::set
(
const
std::string& name,
int
value)
{
set
(name,
safe_convert::numberToString
(value));
}
void
Settings::set
(
const
std::string& name,
bool
value)
{
set
(name,
safe_convert::numberToString
(value));
}
bool
Settings::contains
(
const
std::string& name)
const
{
return
settingsMap_.
find
(name) != settingsMap_.
end
();
}
std::string
Settings::get
(
const
std::string& name,
const
std::string& defaultValue)
const
{
std::map<std::string,std::string>::const_iterator pos =
settingsMap_.
find
(name) ;
if
(pos != settingsMap_.
end
())
return
(*pos).
second
;
else
return
defaultValue ;
}
int
Settings::getInt
(
const
std::string& name,
int
defaultValue)
const
{
std::string value =
get
(name) ;
if
(value.
empty
())
return
defaultValue ;
else
return
boost::lexical_cast<
int
>(value);
}
int
Settings::getBool
(
const
std::string& name,
bool
defaultValue)
const
{
std::string value =
get
(name) ;
if
(value.
empty
())
return
defaultValue ;
else
return
boost::lexical_cast<
bool
>(value);
}
void
Settings::forEach
(
const
boost::function<
void
(
const
std::string&,
const
std::string&)>& func)
const
{
for
(std::map<std::string,std::string>::const_iterator
it = settingsMap_.
begin
(); it != settingsMap_.
end
(); ++it)
{
func
(it->
first
, it->
second
);
}
}
void
Settings::beginUpdate
()
{
updatePending_ =
true
;
}
void
Settings::endUpdate
()
{
updatePending_ =
false
;
if
(isDirty_)
writeSettings
();
}
void
Settings::writeSettings
()
{
isDirty_ =
false
;
Error error =
core::writeStringMapToFile
(settingsFile_, settingsMap_) ;
if
(error)
LOG_ERROR
(error);
}
}
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