ConfigUtils.h

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/*
 *
 *
 * Distributed under the OpenDDS License.
 * See: http://www.opendds.org/license.html
 */

#ifndef CONFIGUTILS_H
#define CONFIGUTILS_H

#include "ace/Configuration.h"
#include "dcps_export.h"
#include "dds/DCPS/PoolAllocator.h"

#include <sstream>
#include <cstdlib>

namespace OpenDDS {
namespace DCPS {

  /// Helper types and functions for config file parsing
  typedef OPENDDS_MAP(OPENDDS_STRING, OPENDDS_STRING) ValueMap;
  typedef std::pair<OPENDDS_STRING, ACE_Configuration_Section_Key> SubsectionPair;
  typedef OPENDDS_LIST(SubsectionPair) KeyList;


  template <typename T>
  bool convertToInteger(const OPENDDS_STRING& s, T& value)
  {
#ifdef OPENDDS_SAFETY_PROFILE
    char* end;
    const long conv = std::strtol(s.c_str(), &end, 10);
    if (end == s.c_str()) return false;
    value = static_cast<T>(conv);
#else
    std::stringstream istr(s.c_str());
    if (!(istr >> value) || (istr.peek() != EOF)) return false;
#endif
    return true;
  }


  ///     Function that pulls all the values from the
  ///     specified ACE Configuration Section and places them in a
  ///     value map based on the field name.  Returns the number of
  ///     values found in the section (and added to the value map).
  ///
  ///     cf     ACE_Configuration_Heap object being processed
  ///     key    ACE_Configuration_Section_Key object that specifies
  ///            the section of the .ini file to process
  ///     values Map of field names to values (both OPENDDS_STRING)
  ///            that this function will add to.
  ///
  OpenDDS_Dcps_Export int pullValues( ACE_Configuration_Heap& cf,
                                      const ACE_Configuration_Section_Key& key,
                                      ValueMap& values );

  ///     Function that processes the specified ACE Configuration Section
  ///     for subsections.  If multiple levels of subsections are found,
  ///     a non-zero value is returned to indicate the error.
  ///     All valid subsection will be placed into the supplied
  ///     KeyList (std::pair<> of the subsection number and
  ///     ACE_Configuration_Section_Key).  A return value of zero indicates
  ///     error-free success.
  ///
  ///
  ///     cf              ACE_Configuration_Heap object being processed
  ///     key             ACE_Configuration_Section_Key object that
  ///                     specifies the section of the .ini file to process
  ///     subsections     List of subsections found (list contains a
  ///                     std::pair<> of the subsection number and
  ///                     ACE_Configuration_Section_Key).
  ///
  OpenDDS_Dcps_Export int processSections( ACE_Configuration_Heap& cf,
                                           const ACE_Configuration_Section_Key& key,
                                           KeyList& subsections );

} // namespace DCPS
} // namespace OpenDDS

#endif /* CONFIGUTILS_H */

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