as_argument: Transform arguments as a pairs of flag and values

In etiennebr/taco: Wrap system calls in R

Description

Transform arguments as a pairs of flag and values

Usage

as_argument(flag = NA, arg = NA, expect = NA, spacer = " ",
  parrot = is.list(arg), mark = "-", mandatory = NA)

Arguments

flag	option parameter
arg	option arguments, provide empty string for no arguments
spacer	for parameters
expect	number of parameters to expect if given any (for required number of parameters use 'mandatory')
mandatory	number of mandatory parameters (for optional parameters use 'expect')
parrot	repeat flag for each list element ?
mark	flag marker

Examples

as_argument("merged", TRUE) #== "-merged"
as_argument("merged", FALSE) #== ""
as_argument("op", NA) #== ""
as_argument("op", "123")  #== "-op 123"
as_argument("op", c(1, 2, 3)) #== "-op 1 2 3"
as_argument("op", list(c(1, 2, 3), c(4, 5, 6)), parrot = TRUE) #== "-op 1 2 3 -op 4 5 6"

etiennebr/taco documentation built on May 16, 2019, 9:06 a.m.