67 lines
2.4 KiB
C++
67 lines
2.4 KiB
C++
|
/* ----------------------------------------------------------------------------
|
||
|
|
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 basic information from config file
|
||
|
|
// and prints out the expected configuration specification.
|
||
|
|
|
||
|
|
void example3(Config& cfg)
|
||
|
|
{
|
||
|
|
ChainedSetting cs(cfg.getRoot());
|
||
|
|
|
||
|
|
Config tmpCfgSpec;
|
||
|
|
tmpCfgSpec.setOptions(Config::OptionOpenBraceOnSeparateLine | Config::OptionSemicolonSeparators);
|
||
|
|
tmpCfgSpec.setTabWidth(3);
|
||
|
|
cs.captureExpectedSpecification(&tmpCfgSpec);
|
||
|
|
|
||
|
|
string name = cs["name"].defaultValue("<name>").isMandatory();
|
||
|
|
string abstract = cs["abstract"].defaultValue("<unknown>");
|
||
|
|
double longitude = cs["longitude"].min(-180.0).max(180.0).isMandatory();
|
||
|
|
double latitude = cs["latitude"].min(-90.0).max(90.0).isMandatory();
|
||
|
|
|
||
|
|
ChainedSetting movie0 = cs["inventory"]["movies"][0];
|
||
|
|
string book0tile = cs["inventory"]["books"][0]["title"].defaultValue("bookXYZ");
|
||
|
|
|
||
|
|
if (cs.isAnyMandatorySettingMissing())
|
||
|
|
{
|
||
|
|
cerr << "Cannot proceed until all mandatory settings are set." << endl << endl;
|
||
|
|
|
||
|
|
auto cfgSpec = cs.getCapturedSpecification("tmpCfgSpec.cfg");
|
||
|
|
cerr << "Expected Config Layout: " << endl << endl;
|
||
|
|
cerr << "// -- begin --" << endl;
|
||
|
|
cerr << cfgSpec;
|
||
|
|
cerr << "// --- end ---" << endl << endl;
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
// from here on all read config values are valid
|
||
|
|
}
|