cpp/example_cpp_integer/example_cpp_integer.cpp

Demonstrates the use of Pantheios to log instances of integral types in a C++ program, using the pantheios::integer inserter class.

/* /////////////////////////////////////////////////////////////////////////////
 * File:        examples/cpp/example_cpp_integer/example_cpp_integer.cpp
 *
 * Purpose:     C++ example program for Pantheios. Demonstrates:
 *
 *                - use of Pantheios inserters for integral types
 *                - use of pantheios::puts() in bail-out conditions
 *
 * Created:     22nd June 2006
 * Updated:     31st August 2006
 *
 * www:         http://www.pantheios.org/
 *
 * License:     This source code is placed into the public domain 2006
 *              by Synesis Software Pty Ltd. There are no restrictions
 *              whatsoever to your use of the software.
 *
 *              This software is provided "as is", and any warranties,
 *              express or implied, of any kind and for any purpose, are
 *              disclaimed.
 *
 * ////////////////////////////////////////////////////////////////////////// */


/* Pantheios Header Files */
#include <pantheios/pantheios.hpp>          // Pantheios C++ main header
#include <pantheios/inserters/integer.hpp>  // for pantheios::integer

/* Standard C/C++ Header Files */
#include <exception>                        // for std::exception
#include <string>                           // for std::string
#include <stdlib.h>                         // for exit codes

/* ////////////////////////////////////////////////////////////////////////// */

// Define the fe.simple process identity, so that it links when using fe.simple
PANTHEIOS_EXTERN_C const char   FE_SIMPLE_PROCESS_IDENTITY[]    =   "example_cpp_integer";

/* ////////////////////////////////////////////////////////////////////////// */

int main()
{
  try
  {
    short           s   = SHRT_MIN;
    unsigned short  us  = USHRT_MAX;
    int             i   = INT_MIN;
    unsigned int    ui  = UINT_MAX;
    long            l   = LONG_MIN;
    unsigned long   ul  = ULONG_MAX;

    // Log a short in decimal; Output: "s: [-32768]"

    pantheios::log_NOTICE("s: [", pantheios::integer(s), "]");

    // Log a unsigned short as hexadecimal; Output: "us: [ffff]"

    pantheios::log_NOTICE("us: [", pantheios::integer(us, pantheios::fmt::hex), "]");

    // Log an int, into a width of 20; Output: "i: [-2147483648         ]"

    pantheios::log_NOTICE("i: [", pantheios::integer(i, -20), "]");

    // Log an unsigned int as hexadecimal with 0x prefix; Output: "ui: [0xffffffff]"

    pantheios::log_NOTICE("ui: [", pantheios::integer(ui, pantheios::fmt::hex | pantheios::fmt::zeroXPrefix), "]");

    // Log a long; Output: "l: [         -2147483648]"

    pantheios::log_NOTICE("l: [", pantheios::integer(l, 20), "]");

    // Log an unsigned long; Output: "ul: [4294967295]"

    pantheios::log_NOTICE("ul: [", pantheios::integer(ul), "]");


    return EXIT_SUCCESS;
  }
  catch(std::bad_alloc &)
  {
    pantheios::log_CRITICAL("out of memory");
  }
  catch(std::exception &x)
  {
    pantheios::log_ALERT("Exception: ", x);
  }
  catch(...)
  {
    pantheios::puts(pantheios::emergency, "Unexpected unknown error");
  }

  return EXIT_FAILURE;
}

/* ////////////////////////////////////////////////////////////////////////// */

pantheios Library documentation © Matthew Wilson, 2006