Teuchos_XMLParameterListHelpers.cpp

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//                    Teuchos: Common Tools Package
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#include "Teuchos_XMLParameterListHelpers.hpp"
#include "Teuchos_FileInputSource.hpp"
#include "Teuchos_StringInputSource.hpp"
#include "Teuchos_XMLParameterListReader.hpp"
#include "Teuchos_XMLParameterListWriter.hpp"
#include "Teuchos_CommHelpers.hpp"


void Teuchos::updateParametersFromXmlFile(
  const std::string &xmlFileName,
  const Ptr<ParameterList> &paramList
  )
{
  XMLParameterListReader xmlPLReader;
  xmlPLReader.setAllowsDuplicateSublists( false );
  FileInputSource xmlFile(xmlFileName);
  XMLObject xmlParams = xmlFile.getObject();
  paramList->setParameters(xmlPLReader.toParameterList(xmlParams));
}


void Teuchos::updateParametersFromXmlFileAndBroadcast(
  const std::string &xmlFileName,
  const Ptr<ParameterList> &paramList,
  const Comm<int> &comm
  )
{
  if (comm.getSize()==1)
    updateParametersFromXmlFile(xmlFileName, paramList);
  else {
    if (comm.getRank()==0) {
      XMLParameterListReader xmlPLReader;
      xmlPLReader.setAllowsDuplicateSublists( false );
      FileInputSource xmlFile(xmlFileName);
      XMLObject xmlParams = xmlFile.getObject();
      std::string xmlString = toString(xmlParams);
      int strsize = xmlString.size();
      broadcast<int, int>(comm, 0, &strsize);
      broadcast<int, char>(comm, 0, strsize, &xmlString[0]);
      updateParametersFromXmlString(xmlString, paramList);
    }
    else {
      int strsize;
      broadcast<int, int>(comm, 0, &strsize);
      std::string xmlString;
      xmlString.resize(strsize);
      broadcast<int, char>(comm, 0, strsize, &xmlString[0]);
      updateParametersFromXmlString(xmlString, paramList);
    }
  }
}


Teuchos::RCP<Teuchos::ParameterList>
Teuchos::getParametersFromXmlFile(const std::string &xmlFileName)
{
  RCP<ParameterList> pl = parameterList();
  updateParametersFromXmlFile(xmlFileName, pl.ptr());
  return pl;
}


Teuchos::RCP<Teuchos::ParameterList>
Teuchos::getParametersFromXmlFile(
  const std::string &xmlFileName,
  RCP<DependencySheet> depSheet)
{
  XMLParameterListReader xmlPLReader;
  xmlPLReader.setAllowsDuplicateSublists( false );
  FileInputSource xmlFile(xmlFileName);
  XMLObject xmlParams = xmlFile.getObject();
  return xmlPLReader.toParameterList(xmlParams, depSheet);
}


void Teuchos::updateParametersFromXmlString(
  const std::string &xmlStr,
  const Ptr<ParameterList> &paramList
  )
{
  XMLParameterListReader xmlPLReader;
  xmlPLReader.setAllowsDuplicateSublists( false );
  StringInputSource xmlStrSrc(xmlStr);
  XMLObject xmlParams = xmlStrSrc.getObject();
  paramList->setParameters(xmlPLReader.toParameterList(xmlParams));
}


Teuchos::RCP<Teuchos::ParameterList>
Teuchos::getParametersFromXmlString(const std::string &xmlStr)
{
  RCP<ParameterList> pl = parameterList();
  updateParametersFromXmlString(xmlStr, pl.ptr());
  return pl;
}


Teuchos::RCP<Teuchos::ParameterList>
Teuchos::getParametersFromXmlString(const std::string &xmlStr,
  RCP<DependencySheet> depSheet)
{
  XMLParameterListReader xmlPLReader;
  xmlPLReader.setAllowsDuplicateSublists( false );
  StringInputSource xmlStrSrc(xmlStr);
  XMLObject xmlParams = xmlStrSrc.getObject();
  return xmlPLReader.toParameterList(xmlParams, depSheet);
}


void Teuchos::writeParameterListToXmlOStream(
  const ParameterList &paramList,
  std::ostream &xmlOut,
  RCP<const DependencySheet> depSheet
  )
{
  XMLParameterListWriter plWriter;
  XMLObject xml = plWriter.toXML(paramList, depSheet);
  xmlOut << xml << std::endl;
}


void Teuchos::writeParameterListToXmlFile(
  const ParameterList &paramList,
  const std::string &xmlFileName,
  RCP<const DependencySheet> depSheet
  )
{
  std::ofstream ofs(xmlFileName.c_str());
  writeParameterListToXmlOStream(paramList,ofs, depSheet);
}