aol Namespace Reference

Namespaces
	color
	table of ansi color codes

Classes
class	Op

Functions
string	strprintf (const char *format,...)
	Give back formatted string, analogously to sprintf, but save the long way 'round with char arrays. More...
void	makeDirectory (const char *DirectoryName, bool verbose)
bool	fileExists (string filename)
template<class T >
T	Min (const T a, const T b)
template<class T >
T	Max (const T a, const T b)
template<class T >
T	Clamp (const T Value, const T Min, const T Max)
template<class T >
T	Sqr (const T a)
template<class T >
T	signum (const T x)
	Signum function template, signum ( 0 ) = 0. More...
bool	fileExists (std::string filename)

Function Documentation

template<class T >

T aol::Clamp ( const T  Value, const T  Min, const T  Max  )

inline

Definition at line 132 of file aol.h.

{ return ( aol::Max ( aol::Min ( Value, Max ), Min ) ); }

bool aol::fileExists

(

string

filename

)

Definition at line 44 of file aol.cpp.

                                    {
  struct stat buf;
  return !stat ( filename.c_str (), &buf ) && S_ISREG ( buf.st_mode );
}

bool aol::fileExists

(

std::string

filename

)

void aol::makeDirectory	(	const char *	DirectoryName,
		bool	verbose
	)

Definition at line 27 of file aol.cpp.

                                                               {
  struct stat directory;
  const int statReturn = stat ( DirectoryName, &directory );
  if ( ( statReturn == - 1 ) || !S_ISDIR ( directory.st_mode ) ) {
    string systemCommand = "mkdir \"";
    systemCommand += DirectoryName;
    systemCommand += "\"";
    if ( system ( systemCommand.c_str() ) != EXIT_SUCCESS )
      cerr << "aol::makeDirectory: Calling '" << systemCommand << "' returned an error.\n";
    if ( verbose )
      cerr << "Created directory " << DirectoryName << endl;
  } else {
    if ( verbose )
      cerr << "Directory " << DirectoryName << " already exists\n";
  }
}

template<class T >

T aol::Max ( const T  a, const T  b  )

inline

Definition at line 130 of file aol.h.

{ return ( ( a < b ) ? b : a ); }

template<class T >

T aol::Min ( const T  a, const T  b  )

inline

Definition at line 129 of file aol.h.

{ return ( ( a < b ) ? a : b ); }

template<class T >

T aol::signum ( const T  x )

inline

Signum function template, signum ( 0 ) = 0.

Definition at line 137 of file aol.h.

                                                {
  if (x > 0.0) return 1;
  else if (x == 0.0) return 0;
  else if (x < 0.0) return -1;
  return x; // NaN
}

template<class T >

T aol::Sqr ( const T  a )

inline

Definition at line 134 of file aol.h.

{ return a * a; }

string aol::strprintf	(	const char *	format,
			...
	)

Give back formatted string, analogously to sprintf, but save the long way 'round with char arrays.

Definition at line 5 of file aol.cpp.

                                           {
  // declare variable argument list
  va_list az;
  // copy from my input into this list(second argument is nothing really used, but the last named argument of myself)
  va_start(az, format);
  // give this argument list variable to vscprintf instead of my own arguments (that is in what functions like vsprintf differ from functions like sprintf)
  const int sizeNeeded = vsnprintf ( NULL, 0, format, az ) + 1;
  // restore stack into clean state:
  va_end(az);

  char *buffer = new char[sizeNeeded];

  va_start(az, format);
  vsprintf (buffer, format, az);
  va_end(az);

  // automatic return type conversion into string:
  string ret = buffer;
  delete[] buffer;
  return ret;
}