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authorJonathan McCrohan <jmccrohan@gmail.com>2011-12-01 22:56:23 +0000
committerJonathan McCrohan <jmccrohan@gmail.com>2011-12-01 22:56:23 +0000
commit429e46051dba814e7d6c74368eb1bba550222cbe (patch)
treeed1dd43cd23c69f156aae2165006a16a66262cef /examples/c++/example2.cpp
parent58bf1382be0cbcf3f9649286fd2719b789a1595f (diff)
downloadlibconfig-429e46051dba814e7d6c74368eb1bba550222cbe.tar.gz
Imported Upstream version 1.4.8upstream/1.4.8
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+/* ----------------------------------------------------------------------------
+ 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', adds a new
+// movie record to the movies list, and writes the updated configuration to
+// 'updated.cfg'.
+
+int main(int argc, char **argv)
+{
+ static const char *output_file = "updated.cfg";
+
+ 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);
+ }
+
+ // Find the 'movies' setting. Add intermediate settings if they don't yet
+ // exist.
+ Setting &root = cfg.getRoot();
+
+ if(! root.exists("inventory"))
+ root.add("inventory", Setting::TypeGroup);
+
+ Setting &inventory = root["inventory"];
+
+ if(! inventory.exists("movies"))
+ inventory.add("movies", Setting::TypeList);
+
+ Setting &movies = inventory["movies"];
+
+ // Create the new movie entry.
+ Setting &movie = movies.add(Setting::TypeGroup);
+
+ movie.add("title", Setting::TypeString) = "Buckaroo Banzai";
+ movie.add("media", Setting::TypeString) = "DVD";
+ movie.add("price", Setting::TypeFloat) = 12.99;
+ movie.add("qty", Setting::TypeInt) = 20;
+
+ // Write out the updated configuration.
+ try
+ {
+ cfg.writeFile(output_file);
+ cerr << "Updated configuration successfully written to: " << output_file
+ << endl;
+
+ }
+ catch(const FileIOException &fioex)
+ {
+ cerr << "I/O error while writing file: " << output_file << endl;
+ return(EXIT_FAILURE);
+ }
+
+ return(EXIT_SUCCESS);
+}
+
+// eof