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Diffstat (limited to 'examples/c++/example1.cpp')
-rw-r--r-- | examples/c++/example1.cpp | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/examples/c++/example1.cpp b/examples/c++/example1.cpp new file mode 100644 index 0000000..1fb5ff6 --- /dev/null +++ b/examples/c++/example1.cpp @@ -0,0 +1,151 @@ +/* ---------------------------------------------------------------------------- + libconfig - A library for processing structured configuration files + Copyright (C) 2005-2010 Mark A Lindner + + This file is part of libconfig. + + 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.h++> + +using namespace std; +using namespace libconfig; + +// This example reads the configuration file 'example.cfg' and displays +// some of its contents. + +int main(int argc, char **argv) +{ + Config cfg; + + // Read the file. If there is an error, report it and exit. + try + { + cfg.readFile("example.cfg"); + } + catch(const FileIOException &fioex) + { + std::cerr << "I/O error while reading file." << std::endl; + return(EXIT_FAILURE); + } + catch(const ParseException &pex) + { + std::cerr << "Parse error at " << pex.getFile() << ":" << pex.getLine() + << " - " << pex.getError() << std::endl; + return(EXIT_FAILURE); + } + + // Get the store name. + try + { + string name = cfg.lookup("name"); + cout << "Store name: " << name << endl << endl; + } + catch(const SettingNotFoundException &nfex) + { + cerr << "No 'name' setting in configuration file." << endl; + } + + const Setting& root = cfg.getRoot(); + + // Output a list of all books in the inventory. + try + { + const Setting &books = root["inventory"]["books"]; + int count = books.getLength(); + + cout << setw(30) << left << "TITLE" << " " + << setw(30) << left << "AUTHOR" << " " + << setw(6) << left << "PRICE" << " " + << "QTY" + << endl; + + for(int i = 0; i < count; ++i) + { + const Setting &book = books[i]; + + // Only output the record if all of the expected fields are present. + string title, author; + double price; + int qty; + + if(!(book.lookupValue("title", title) + && book.lookupValue("author", author) + && book.lookupValue("price", price) + && book.lookupValue("qty", qty))) + continue; + + cout << setw(30) << left << title << " " + << setw(30) << left << author << " " + << '$' << setw(6) << right << price << " " + << qty + << endl; + } + cout << endl; + } + catch(const SettingNotFoundException &nfex) + { + // Ignore. + } + + // Output a list of all books in the inventory. + try + { + const Setting &movies = root["inventory"]["movies"]; + int count = movies.getLength(); + + cout << setw(30) << left << "TITLE" << " " + << setw(10) << left << "MEDIA" << " " + << setw(6) << left << "PRICE" << " " + << "QTY" + << endl; + + for(int i = 0; i < count; ++i) + { + const Setting &movie = movies[i]; + + // Only output the record if all of the expected fields are present. + string title, media; + double price; + int qty; + + if(!(movie.lookupValue("title", title) + && movie.lookupValue("media", media) + && movie.lookupValue("price", price) + && movie.lookupValue("qty", qty))) + continue; + + cout << setw(30) << left << title << " " + << setw(10) << left << media << " " + << '$' << setw(6) << right << price << " " + << qty + << endl; + } + cout << endl; + } + catch(const SettingNotFoundException &nfex) + { + // Ignore. + } + + return(EXIT_SUCCESS); +} + +// eof |