R/text_extract_all.R

In stringb: Convenient Base R String Handling

#' extract regex matches
#'
#' wrapper function around gregexec and regmatches
#'
#' @param x text from which to extract
#' @param pattern see \link{grep}
#' @param ignore.case see \link{grep}
#' @param perl see \link{grep}
#' @param fixed see \link{grep}
#' @param useBytes see \link{grep}
#' @param invert if TRUE non-regex-matches are extracted instead
#' @export
text_extract_all <-
  function(
    x,
    pattern,
    ignore.case = FALSE,
    perl        = FALSE,
    fixed       = FALSE,
    useBytes    = FALSE,
    invert      = FALSE
  ){
    regmatches(
      x,
      gregexpr(
        pattern     = pattern,
        text        = x,
        ignore.case = ignore.case,
        perl        = perl,
        fixed       = fixed,
        useBytes    = useBytes
      ),
      invert = invert
    )
  }