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/* ----------------------------------------------------------------------------
libconfig - A library for processing structured configuration files
libconfig chained - Extension for reading the configuration and defining
the configuration specification at once.
Copyright (C) 2016 Richard Schubert
This file is part of libconfig contributions.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public License
as published by the Free Software Foundation; either version 2.1 of
the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, see
<http://www.gnu.org/licenses/>.
----------------------------------------------------------------------------
*/
#include <iostream>
#include <iomanip>
#include <cstdlib>
#include "../libconfig_chained.h"
using namespace std;
using namespace libconfig;
// This example reads complex types from config file using method chains.
void example2(Config& cfg)
{
ChainedSetting cs(cfg.getRoot());
auto books = cs["inventory"]["books"];
if (!books.exists())
{
cerr << "No book section available." << endl;
return;
}
cout << setw(30) << left << "TITLE" << " "
<< setw(30) << left << "AUTHOR" << " "
<< setw(6) << left << "PRICE" << " "
<< "QTY"
<< endl;
const int count = books.getLength();
for(int i = 0; i < count; ++i)
{
auto book = books[i];
string title = book["title"];
string author = book["author"];
double price = book["price"].min(0.0);
int qty = book["qty"].min(0);
// Only output the record if all of the expected fields are present.
if(book.isAnySettingMissing()) continue;
cout << setw(30) << left << title << " "
<< setw(30) << left << author << " "
<< '$' << setw(6) << right << price << " "
<< qty
<< endl;
}
}
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