72 lines
2.2 KiB
C++
72 lines
2.2 KiB
C++
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/* ----------------------------------------------------------------------------
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libconfig - A library for processing structured configuration files
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libconfig chained - Extension for reading the configuration and defining
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the configuration specification at once.
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Copyright (C) 2016 Richard Schubert
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This file is part of libconfig contributions.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public License
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as published by the Free Software Foundation; either version 2.1 of
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the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; if not, see
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<http://www.gnu.org/licenses/>.
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----------------------------------------------------------------------------
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*/
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#include <iostream>
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#include <iomanip>
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#include <cstdlib>
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#include "../libconfig_chained.h"
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using namespace std;
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using namespace libconfig;
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// This example reads complex types from config file using method chains.
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void example2(Config& cfg)
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{
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ChainedSetting cs(cfg.getRoot());
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auto books = cs["inventory"]["books"];
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if (!books.exists())
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{
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cerr << "No book section available." << endl;
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return;
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}
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cout << setw(30) << left << "TITLE" << " "
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<< setw(30) << left << "AUTHOR" << " "
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<< setw(6) << left << "PRICE" << " "
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<< "QTY"
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<< endl;
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const int count = books.getLength();
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for(int i = 0; i < count; ++i)
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{
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auto book = books[i];
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string title = book["title"];
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string author = book["author"];
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double price = book["price"].min(0.0);
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int qty = book["qty"].min(0);
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// Only output the record if all of the expected fields are present.
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if(book.isAnySettingMissing()) continue;
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cout << setw(30) << left << title << " "
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<< setw(30) << left << author << " "
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<< '$' << setw(6) << right << price << " "
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<< qty
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<< endl;
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}
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}
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