teca_system_util Namespace Reference

Codes for dealing with low level system API's. More...

Functions
template<typename T >
int	get_environment_variable (const char *var, T &val)
int	get_command_line_option (int argc, char **argv, const char *arg_name, int require, std::string &arg_val)
int	command_line_option_check (int argc, char **argv, const char *arg_name)

Detailed Description

Codes for dealing with low level system API's.

Function Documentation

command_line_option_check()

int teca_system_util::command_line_option_check	(	int	argc,
		char **	argv,
		const char *	arg_name
	)

check for the presence of the name command line option. return non-zero if it is found.

get_command_line_option()

int teca_system_util::get_command_line_option	(	int	argc,
		char **	argv,
		const char *	arg_name,
		int	require,
		std::string &	arg_val
	)

extract the value of the named command line argument. return 0 if successful. If require is not zero then an error will be reported if the argument is not present.

get_environment_variable()

template<typename T >

int teca_system_util::get_environment_variable	(	const char *	var,
		T &	val
	)

initialize val with the environment variable named by var converted to a numeric type. Only floating point and signed integers are implemented. For unsigned types, check that the return is greater or equal to zero.

returns: 0 if the variable was found and val was initialized from it 1 if the varibale was not found -1 if the variable was found but conversion from string failed