has.R
In fansi: ANSI Control Sequence Aware String Functions

## Copyright (C) Brodie Gaslam
##
## This file is part of "fansi - ANSI Control Sequence Aware String Functions"
##
## This program is free software: you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation, either version 2 or 3 of the License.
##
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
## GNU General Public License for more details.
##
## Go to <https://www.r-project.org/Licenses> for copies of the licenses.

library(fansi)

unitizer_sect("has", {

  has_ctl(paste0(red, "hello", end))
  has_ctl(paste0("hello", end))
  has_ctl(paste0("hello"))

  in.middle <- c("world", paste0("hello", red), "wow")
  in.end <- c("world", "wow", paste0("hello", red))
  in.start <- c(paste0("hello", red), "wow", "world")

  has_ctl(in.middle)
  has_ctl(in.end)
  has_ctl(in.start)

  has_ctl(c(in.start, NA))

  has_ctl("hello\nworld")
  has_sgr("hello\nworld")
  has_sgr(in.end)
  # no warning from has_ctl
  has_ctl("hello\033p world")
})
unitizer_sect("corner cases", {
  has_ctl("hello\033[31#0mworld")
  suppressWarnings(has_ctl("hello\033[31#0mworld"))
  has_ctl("hello world", ctl=c('sgr', 'sgr'))
  has_ctl("hello\033[31#0")
})
unitizer_sect("select ctl", {
  has_ctl("hello\033[31mworld", ctl=c('sgr'))
  has_ctl("hello\033[31mworld", ctl=c('csi'))
  has_ctl("hello\033[31!mworld", ctl=c('sgr'))
  has_ctl("hello\033[31!mworld", ctl=c('csi'))
  has_ctl("hello\033[31lworld", ctl=c('csi'))
  has_ctl("hello\nworld", ctl=c('all', 'nl'))
  has_ctl("hello\nworld", ctl=c('all', 'c0'))
  has_ctl("hello\tworld", ctl=c('all', 'c0'))
  has_ctl("hello\tworld", ctl=c('c0'))
  has_ctl("hello\033pworld", ctl=c('esc'))
  has_ctl("hello\033pworld", ctl=c('all', 'esc'))
})
unitizer_sect("bad inputs", {
  has_ctl("hello world", warn=NULL)

  has_ctl("hello world", ctl=1:3)
  has_ctl("hello world", ctl="bananas")
  has_ctl("hello world", ctl=NA_character_)
  has_ctl(c("\033[31mhello",  "wo\nrld"), ctl=character())
})
unitizer_sect("deprecation", {
  has_ctl("hello world", which="sgr")
})