dm_arg_read Function

public function dm_arg_read(args, app, major, minor, patch) result(rc)

Reads all arguments from command-line and prints error message if one is missing. Returns the error code of the first invalid argument.

The function also parses the command-line arguments for -v/--version to display the current application and library version, and -h/--help to output all available command-line arguments. If one of these arguments is passed, dm_stop(0) is called afterwards.

The function returns the following error codes:

• E_EMPTY if array of arguments is empty.
• E_ARG_INVALID if an required argument has not been passed.
• E_ARG_NO_VALUE if an argument has been passed without value.
• E_ARG_TYPE if an argument has the wrong type.
• E_ARG_LENGTH if the length of the argument is wrong.
• E_ARG_UNKNOWN if an unknown argument has been passed.

Arguments

Type	Intent	Optional	Attributes		Name
type(arg_type),	intent(inout)			::	args(:)	Arguments to match.
character(len=*),	intent(in),	optional		::	app	App name (for -v).
integer,	intent(in),	optional		::	major	Major version number (for -v).
integer,	intent(in),	optional		::	minor	Minor version number (for -v).
integer,	intent(in),	optional		::	patch	Patch level (for -v).

Return Value integer