Imported Upstream version 1.4.8upstream/1.4.8

1 files changed, 151 insertions, 0 deletions

diff --git a/examples/c++/example1.cpp b/examples/c++/example1.cpp
new file mode 100644
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--- /dev/null
+++ b/examples/c++/example1.cpp
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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' 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