R/altrep_backend-reverse.R

In charr: String Processing Reimagined for 'ALTREP' Strings

# Copied from stringi; stri_* renamed to ci_*.
# kate: default-dictionary en_US

## This file is part of the 'stringi' package for R.
## Copyright (c) 2013-2025, Marek Gagolewski <https://www.gagolewski.com/>
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# @title
# Reverse Each String
#
# @description
# Reverses the order of the code points in every string.
#
# @details
# Note that this operation may result in non-Unicode-normalized
# strings and may give peculiar outputs for bidirectional strings.
#
# See also \code{\link{ci_rand_shuffle}} for a random permutation
# of code points.
#
# @param str character vector
#
# @return Returns a character vector.
#
# @examples
# ci_reverse(c('123', 'abc d e f'))
# ci_reverse('ZXY (\u0105\u0104123$^).')
# ci_reverse(ci_trans_nfd('\u0105')) == ci_trans_nfd('\u0105') # A, ogonek -> agonek, A
#
# @export
ci_reverse <- function(str)
{
    .Call(C_ci_reverse, str)
}