R/trimSpace.R

In seqinr: Biological Sequences Retrieval and Analysis

trimSpace <- function(x, leading = TRUE, trailing = TRUE, space = "[:space:]"){
    if(leading){
        pattern <- paste("^[", space, "]*", sep = "", collapse = "")
        x <- sub(pattern = pattern, replacement =  "", x = x)
    }
    if(trailing){
        pattern <- paste("[", space, "]*$", sep = "", collapse = "")
        x <- sub(pattern = pattern, replacement =  "", x = x)
    }
    return(x)
}