CfgXMLconfigBuilder Class Reference

Construct a CfgConfig object from data contained in a <config> XML field. More...

#include <CfgXMLconfigBuilder.h>

Inheritance diagram for CfgXMLconfigBuilder:

List of all members.

Public Member Functions
	CfgXMLconfigBuilder (const char *tag)
void	Build (const MXMLAttributeList &attr, const std::string &buffer)

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Detailed Description

Construct a CfgConfig object from data contained in a <config> XML field.

Definition at line 16 of file CfgXMLconfigBuilder.h.

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Constructor & Destructor Documentation

CfgXMLconfigBuilder::CfgXMLconfigBuilder

(

const char *

tag

)

Definition at line 22 of file CfgXMLconfigBuilder.cxx.

                                                        :
  CfgConfigBuilder(),
  MXMLBuilder(tag)
{ }

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Member Function Documentation

void CfgXMLconfigBuilder::Build	(	const MXMLAttributeList &	attr,
		const std::string &	buffer
	)			[virtual]

Implements MXMLBuilder.

Definition at line 29 of file CfgXMLconfigBuilder.cxx.

References CfgConfig::AdoptParam(), CfgConfig::Copy(), CfgTable::GetConfig(), MXMLParser::GetCurrentSource(), CfgTable::Instance(), MXMLStack< T >::Instance(), MXMLString::IsTrue(), name, CfgConfig::Param(), CfgConfigBuilder::Publish(), s, and CfgConfig::SetReadOnly().

{
//======================================================================
//! Construct a configuration from XML data. Most general format:
//!
//! <config name="NAME" version"VERSION" ro="T/F"> ... </config>
//!
//! Only "NAME" is required.
//!
//! \param attr   - list of XML attributes
//! \param buffer - text inside element (un used)
//======================================================================x
  // Parse out the attributes
  std::string name    = "<null>"; // name of config
  std::string version = "0";      // version of config
  std::string source  = "??";     // Which one?? TODO
  std::string base    = "0";      // Version of config this on is based on
  bool        ronly   = false;    // Flagged as read only?

  // Ask parser name of file/database we're looking at
  source = MXMLParser::GetCurrentSource();
  
  // Pull out attributes
  MXMLAttributeList::const_iterator itr   (attr.begin());
  MXMLAttributeList::const_iterator itrEnd(attr.end());
  for (; itr!=itrEnd; ++itr) {
    if (itr->Name()=="name")    name   = itr->Value();
    if (itr->Name()=="version") version= itr->Value();
    if (itr->Name()=="base")    base   = itr->Value();
    if (itr->Name()=="ro")      ronly  = MXMLString::IsTrue(itr->Value());
  }

  // Create the configuration using the attributes
  CfgConfig* cfg = new CfgConfig(name.c_str(),
                 version.c_str(),
                 source.c_str());
  if (base=="0") {
    // Scoop up any parameters left on the stack by the XML parser and
    // add them to the configuration
    MXMLStack<CfgParam>& s = MXMLStack<CfgParam>::Instance();
    for (; !s.empty(); s.pop()) cfg->AdoptParam( new CfgParam(s.top()) );
  }
  else {
    // Find the existing configuration and make the new one a copy of
    // it
    const CfgConfig* basecfg = 
      CfgTable::Instance().GetConfig(name.c_str(),base.c_str());
    if (basecfg==0) {
      std::cout << "Failed to find base configuration "
        << name << ":" << base
        << " while constructing "
        << name << ":" << version << std::endl;
      abort();
    }
    // Copy the base into the derived configuration
    CfgConfig::Copy(*cfg, *basecfg, version.c_str(), source.c_str());

    // Scoop up all the parameters which are associated with the
    // derived configuration
    MXMLStack<CfgParam>& s = MXMLStack<CfgParam>::Instance();
    for (; !s.empty(); s.pop()) cfg->Param(s.top().GetName()) = s.top();
  }
  // Finally, ship it!
  if (ronly) cfg->SetReadOnly();
  this->Publish(cfg);
}

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The documentation for this class was generated from the following files:

• CfgXMLconfigBuilder.h
• CfgXMLconfigBuilder.cxx

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