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//
// Filename : ConfigIO.h
// Author(s) : Emmanuel Turquin
// Purpose : Configuration management
// Date of creation : 26/02/2003
//
///////////////////////////////////////////////////////////////////////////////
//
// Copyright (C) : Please refer to the COPYRIGHT file distributed
// with this source distribution.
//
// 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, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
///////////////////////////////////////////////////////////////////////////////
#ifndef CONFIGIO_H
# define CONFIGIO_H
# include <qstring.h>
# include <qstringlist.h>
# include <qtextstream.h>
# include <qdom.h>
# include "../system/FreestyleConfig.h"
class ConfigIO
{
public:
ConfigIO(QString filename = "",
const QString& doc_type = "config_file",
bool automatic = false,
const QString& sep = "/");
~ConfigIO();
QString getDefaultFile() const;
void setDefaultFile(const QString& filename);
bool getAuto() const;
void setAuto(bool automatic);
QString getPathSep() const;
void setPathSep(const QString& sep);
int loadFile(const QString& filename = "");
int saveFile(const QString& filename = "") const;
template <class T> int getValue(const QString& path, T& res) const;
template <class T> int setValue(const QString& path, const T& src);
private:
QString _path_sep;
QString _default_file;
bool _automatic;
QDomDocument _tree;
QString _doc_type;
};
//
// Implementation of templated methods
//
///////////////////////////////////////////////////
namespace Internal {
template <class T>
struct readValue {
void operator()(const QString &value, T &res) {
QTextStream((QString *)&value, QIODevice::ReadOnly)>> res;
}
};
template <>
struct readValue<QString> {
void operator()(const QString& value, QString& res) {
res = value;
}
};
template <>
struct readValue<bool> {
void operator()(const QString& value, bool& res) {
short res_tmp;
QTextStream((QString *)&value, QIODevice::ReadOnly) >> res_tmp;
res = res_tmp;
}
};
} // end of namespace Internal
template <class T>
int ConfigIO::getValue(const QString& path, T& res) const {
// Split path
QStringList strlist;
strlist = path.split(_path_sep);
unsigned size = strlist.size();
if (size-- < 2)
return 1;
// try to find the right element
QDomElement right_node;
QDomElement node = _tree.documentElement().firstChild().toElement();
for (unsigned i = 0;
!node.isNull() && i < size;
node = node.firstChild().toElement(), i++) {
while (!node.isNull() && node.tagName() != strlist[i])
node = node.nextSibling().toElement();
right_node = node;
}
// and the right attribute
if (right_node.hasAttribute(strlist[size])) {
QString value = right_node.attribute(strlist[size]);
Internal::readValue<T> rv;
rv(value, res);
return 0;
}
return 1;
}
template <class T>
int ConfigIO::setValue(const QString& path, const T& src) {
// Split path
QStringList strlist = path.split(_path_sep);
unsigned size = strlist.size();
if (size-- < 2)
return 1;
// verify that the tree isn't empty
// if so, create a root
QDomElement node = _tree.documentElement();
if (node.isNull()) {
node = _tree.createElement(_doc_type);
_tree.appendChild(node);
}
// find the right element
QDomElement child = node.firstChild().toElement();
for (unsigned i = 0;
i < size;
node = child, child = child.firstChild().toElement(), i++) {
while (!child.isNull() && child.tagName() != strlist[i])
child = child.nextSibling().toElement();
if (child.isNull()) {
child = _tree.createElement(strlist[i]);
node.appendChild(child);
}
}
// and set the attribute
QString value;
QTextStream(&value, QIODevice::WriteOnly) << src;
node.setAttribute(strlist[size], value);
return 0;
}
#endif // CONFIGIO_H
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