Gaudi::Parsers::Utils Namespace Reference

Functions
StatusCode	getEnv (const std::string &envName, std::string &envValue)
	Get enviroment variable.
StatusCode	searchFile (const std::string &fileInput, bool addCurrent, const std::vector< std::string > &dirs, std::string &fileOutput)
	Search file StatusCode::SUCCESS if file was founded.
std::string	removeEnvironment (const std::string &input)
	Remove enviroment variables from string.
bool	isWin ()
	Check if os is Windows.
std::string	pathSeparator ()
	Get path separator.
std::vector< std::string >	extractPath (const std::string &input, bool removeEnv=true)
	Extract paths separeted by '.
StatusCode	readFile (const std::string &name, std::string &result)
	Read file to string.
StatusCode	parseValue (const std::string &input, std::string &stringResult, std::vector< std::string > &vectorResult)
	Try to recognize string as value of job options type.

---

Function Documentation

std::vector< std::string > Gaudi::Parsers::Utils::extractPath	(	const std::string &	input,
		bool	removeEnv = true
	)

Extract paths separeted by '.

' or ':' or ';'

Returns:

List of paths

Parameters:

input	String to process
removeEnv	Remove enviroment variables?

Definition at line 182 of file ParserUtils.cpp.

{
  std::string in = removeEnv?removeEnvironment(input):input;
  std::string separator = ","+pathSeparator();
  typedef boost::tokenizer<boost::char_separator<char> > Tokenizer;
  std::vector<std::string> result;
  Tokenizer tok(in, boost::char_separator<char>(separator.c_str()));
  Tokenizer::iterator it =tok.begin();
  while(it!=tok.end())
  {
    if(it->length()>0){ result.push_back(*it); }
    it++;
  }
  return result;
}

StatusCode Gaudi::Parsers::Utils::getEnv	(	const std::string &	envName,
		std::string &	envValue
	)

Get enviroment variable.

Returns:

StatusCode::SUCCESS if variable exists

Parameters:

envName	Enviroment variable name
envValue	Result = enviroment value

Definition at line 84 of file ParserUtils.cpp.

{
  char* envch = getenv(envName.c_str());
        if(envch==NULL) { return StatusCode::FAILURE; }
        envValue = envch;
  return StatusCode::SUCCESS;
}

bool Gaudi::Parsers::Utils::isWin

(

)

Check if os is Windows.

Definition at line 169 of file ParserUtils.cpp.

{
#ifdef _WIN32
  return true;
#else
  return false;
#endif  
}

StatusCode Gaudi::Parsers::Utils::parseValue	(	const std::string &	input,
		std::string &	stringResult,
		std::vector< std::string > &	vectorResult
	)

Try to recognize string as value of job options type.

Returns:

StatusCode::SUCCESS if string is recognized

Parameters:

input	string
stringResult	String representation of value
vectorResult	Result vector. Values represented as strings

Definition at line 199 of file ParserUtils.cpp.

{
  
  typedef 
    boost::spirit::position_iterator<std::string::const_iterator> IteratorT;
  
  Gaudi::Parsers::ValueGrammar   grValue;
  Gaudi::Parsers::SkipperGrammar grSkipper;
  IteratorT beginpos(input.begin(), input.end(), "");
  IteratorT endpos;
  boost::tuple<std::string, std::vector<std::string> > result;
  boost::spirit::parse_info<IteratorT> info = 
    boost::spirit::parse
    (beginpos, endpos, grValue[var(result)=arg1] ,grSkipper);
  if (!info.full){ return StatusCode::FAILURE; }
  stringResult = result.get<0>();
  vectorResult = result.get<1>();
  return StatusCode::SUCCESS;
}

std::string Gaudi::Parsers::Utils::pathSeparator

(

)

Get path separator.

Definition at line 178 of file ParserUtils.cpp.

{ return Gaudi::Parsers::Utils::isWin()?";":":"; }

StatusCode Gaudi::Parsers::Utils::readFile	(	const std::string &	name,
		std::string &	result
	)

Read file to string.

Returns:

StatusCode::SUCCESS if file was readen succesfully

Parameters:

name	Path to file
result	Result string

Definition at line 160 of file ParserUtils.cpp.

{
  std::ifstream in(name.c_str());
  if (!in.is_open()) { return StatusCode::FAILURE; }
  char c;
  while (!in.get(c).eof()) { result += c; }
  return StatusCode::SUCCESS;  
}

std::string Gaudi::Parsers::Utils::removeEnvironment

(

const std::string &

input )

Remove enviroment variables from string.

Returns:

String without enviroment variables

Parameters:

input

String to process

Definition at line 93 of file ParserUtils.cpp.

                                                          {
  std::string result=input;// result
  
  const char* re = "\\$(([A-Za-z0-9_]+)|\\(([A-Za-z0-9_]+)\\))";
  std::string::const_iterator start, end;
  boost::regex expression(re);
  start = input.begin();
  end = input.end();   
  boost::match_results<std::string::const_iterator> what;
  boost::match_flag_type flags = boost::match_default;
  while ( boost::regex_search(start, end, what, expression, flags ) )   
  {
    std::string var,env;
    std::string matched(what[0].first,what[0].second);
    std::string v1(what[2].first,what[2].second);
    std::string v2(what[3].first,what[3].second);      
    
    if ( v1.length()>0){ var = v1; }
    else { var = v2; }
    
    StatusCode ok = getEnv(var, env);
    if(ok.isSuccess())
    { boost::algorithm::replace_first(result,matched, env); }
    start = what[0].second;
    // update flags:
    flags |= boost::match_prev_avail;
    flags |= boost::match_not_bob;
  }
  return result;
}

StatusCode Gaudi::Parsers::Utils::searchFile	(	const std::string &	fileInput,
		bool	addCurrent,
		const std::vector< std::string > &	dirs,
		std::string &	fileOutput
	)

Search file StatusCode::SUCCESS if file was founded.

Parameters:

fileInput	Path to file which can be not completed
addCurrent	Add current program directory?
dirs	Directories in which we can search file
fileOutPut	Result - absolute path to file

Definition at line 125 of file ParserUtils.cpp.

{
        std::string result;
  try {
    fs::path givenPath(removeEnvironment(fileInput),fs::native);
    //std::cout<<"Given path="<<givenPath.string()<<std::endl;
    fs::path currentPath = givenPath;
    std::vector<std::string> sdirs = dirs;
    if(addCurrent){
      sdirs.insert(sdirs.begin(), 
                   fs::initial_path().native_directory_string());
    }
    std::vector<std::string>::const_iterator current = 
      sdirs.begin(),end=sdirs.end();
    while(1) {
      if(fs::exists(currentPath)) {
        fileOutput = currentPath.native_directory_string();
        return StatusCode::SUCCESS;
      }
      if(current!=end) {
        std::string _n = *current;
        currentPath = fs::path(_n, fs::native)/givenPath;
      }else{
        return StatusCode::FAILURE;
      }
      ++current;
    }
  }catch(...) {}
  return StatusCode::FAILURE;
}