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/***************************************************************************
setting.cpp
-------------------
begin : Tue Nov 06 2007
copyright : (C) 2007 - 2012 by Roland Riegel
email : feedback@roland-riegel.de
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
#include "setting.h"
#include "settingfilter.h"
#include "stringutils.h"
#include <istream>
#include <ostream>
#include <sstream>
using namespace std;
Setting::~Setting()
{
for(list<SettingFilter*>::const_iterator itFilter = m_filters.begin(); itFilter != m_filters.end(); ++itFilter)
delete *itFilter;
m_filters.clear();
}
void Setting::pushFilter(SettingFilter* filter)
{
if(!filter)
return;
m_filters.push_back(filter);
}
void Setting::popFilter()
{
if(m_filters.empty())
return;
delete m_filters.back();
m_filters.pop_back();
}
SettingFilter* Setting::findFilterWithId(const string& id)
{
for(list<SettingFilter*>::const_iterator itFilter = m_filters.begin(); itFilter != m_filters.end(); ++itFilter)
{
if((*itFilter)->getId() == id)
return *itFilter;
}
return 0;
}
const SettingFilter* Setting::findFilterWithId(const string& id) const
{
for(list<SettingFilter*>::const_iterator itFilter = m_filters.begin(); itFilter != m_filters.end(); ++itFilter)
{
if((*itFilter)->getId() == id)
return *itFilter;
}
return 0;
}
string Setting::getThroughFilter() const
{
string valueCopy = m_value;
for(list<SettingFilter*>::const_reverse_iterator itFilter = m_filters.rbegin(); itFilter != m_filters.rend(); ++itFilter)
(*itFilter)->filterRead(valueCopy);
return valueCopy;
}
bool Setting::setThroughFilter(const string& value)
{
string valueCopy = value;
for(list<SettingFilter*>::iterator itFilter = m_filters.begin(); itFilter != m_filters.end(); ++itFilter)
{
if(!(*itFilter)->filterWrite(valueCopy))
return false;
}
m_value = valueCopy;
return true;
}
istream& operator>>(istream& in, Setting& setting)
{
while(!in.eof())
{
// extract line from stream
string line;
getline(in, line);
if(in.fail())
return in;
// strip whitespace
line = trim(line);
// skip empty lines
if(line.empty())
continue;
// skip comments
if(line[0] == '#')
continue;
// split line into id and value
vector<string> words = splitQuoted(line, "=");
if(words.size() < 2 || words[0].empty())
{
in.setstate(ios_base::failbit);
return in;
}
setting.setId(words[0]);
setting.setThroughFilter(words[1]);
break;
}
return in;
}
ostream& operator<<(ostream& out, const Setting& setting)
{
out << setting.getId() << "=\"" << setting.getThroughFilter() << "\"" << endl;
return out;
}
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