R/Ls.R

In John-R-Wallace/JRWToolBox: What the package does (short line)

Ls <- function(pattern = "[!.]*", pos = 1, cases = TRUE, all = FALSE, long = FALSE, open = FALSE, fix = FALSE, ...) {

   Lss <- function (pattern = "[!.]*", pos = 1, all = FALSE, long = FALSE, open = FALSE, fix = FALSE, ...) {
   
       if (all) 
           pos <- 1:length(search())
     
      if (long) {
          for( i in pos) {
             cat("\n")
             print(ll(pos = i, pattern = pattern))
             cat("\n")
           }
           return(invisible())
       }
      else {
           out <- lapply(as.list(pos), objects, pat = pattern, ...)
           names(out) <- search()[pos]
      }
      xlen <- length(out)
      this <- paste("[[", names(out), "]]", sep = "")
      for (i in 1:xlen) {
          if (length(out[[i]]) > 0) {
              if (is.data.frame(out[[i]])) {
                if (dim(out[[i]])[1] > 0) {
                  cat(this[i], ":\n", sep = "")
                  print(out[[i]], prefix = this[i], q = FALSE)
                  cat("\n")
                }
              }
              else {
                cat(this[i], ":\n", sep = "")
                print(out[[i]], prefix = this[i], q = FALSE)
                cat("\n")
              }
          }
      }
      if (open) {
           for (i in 1:length(out)) {
               cat("\n\n***", out[i], "***\n")
               print(eval(parse(text = out[i])))
           }
       }
       if (length(out) == 1 & fix) 
           assign(substitute(out), edit(eval(parse(text = out))), pos = 1)
         
       invisible(out)
   }

   if (!(is.character(substitute(pattern)))) 
        pattern <- deparse(substitute(pattern))
  
    if(pattern == "[!.]*")
       Lss(pattern, pos = pos, all = all, long = long, open = open, fix = fix, ...)
  
    else {
       cat("\n")
       Lss(pattern, pos = pos, all = all, long = long, open = open, fix = fix, ...)
       if(cases) {
          Pat <- tolower(pattern)
          cat("\n--", Pat, "--\n")
          Lss(Pat, pos = pos, all = all, long = long, open = open, fix = fix, ...)
          
          Pat <- JRWToolBox::casefold.f(pattern, first.letter.cap = TRUE)
          cat("\n--", Pat, "--\n")
          Lss(Pat, pos = pos, all = all, long = long, open = open, fix = fix, ...)
          
          Pat <- toupper(pattern)
          cat("\n--", Pat, "--\n")
          Lss(Pat, pos = pos, all = all, long = long, open = open, fix = fix, ...)
       }
    }
}