Teuchos - Trilinos Tools Package Version of the Day
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Teuchos_YamlParameterListHelpers.cpp
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3//
4// Teuchos: Common Tools Package
5// Copyright (2004) Sandia Corporation
6//
7// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
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41
42#include "Teuchos_YamlParameterListHelpers.hpp"
44#include "Teuchos_CommHelpers.hpp"
45
46#include <string>
47#include <fstream>
48#include <streambuf>
49
50void Teuchos::updateParametersFromYamlFileAndBroadcast(
51 const std::string &yamlFileName,
52 const Ptr<ParameterList> &paramList,
53 const Comm<int> &comm,
54 bool overwrite
55 )
56{
57 if (comm.getSize()==1)
58 updateParametersFromYamlFile(yamlFileName, paramList);
59 else {
60 if (comm.getRank()==0) {
61 std::ifstream stream(yamlFileName.c_str());
62 TEUCHOS_TEST_FOR_EXCEPTION(!stream.is_open(),
63 std::runtime_error,
64 "Could not open YAML file " << yamlFileName);
65 std::istreambuf_iterator<char> stream_iter(stream);
66 std::istreambuf_iterator<char> stream_end;
67 std::string yamlString(stream_iter, stream_end);
68 int strsize = yamlString.size();
69 broadcast<int, int>(comm, 0, &strsize);
70 char* ptr = (strsize) ? (&yamlString[0]) : 0;
71 broadcast<int, char>(comm, 0, strsize, ptr);
72 updateParametersFromYamlString(yamlString, paramList,overwrite, yamlFileName);
73 }
74 else {
75 int strsize;
76 broadcast<int, int>(comm, 0, &strsize);
77 std::string yamlString;
78 yamlString.resize(strsize);
79 char* ptr = (strsize) ? (&yamlString[0]) : 0;
80 broadcast<int, char>(comm, 0, strsize, ptr);
81 updateParametersFromYamlString(yamlString, paramList,overwrite);
82 }
83 }
84}
Definition of XMLInputSource derived class for reading XML from a file.
#define TEUCHOS_TEST_FOR_EXCEPTION(throw_exception_test, Exception, msg)
Macro for throwing an exception with breakpointing to ease debugging.