Try to support older R versions

.travis.yml

@@ -16,7 +16,6 @@ before_install:
   - if [ $TRAVIS_OS_NAME = linux ]; then sudo apt-get -qq update; fi
   - if [ $TRAVIS_OS_NAME = linux ]; then sudo apt-get install -y xclip; fi
   - if [ $TRAVIS_OS_NAME = osx ]; then brew install xclip; fi
-  - if [ $TRAVIS_OS_NAME = osx ]; then brew install r@3.1.3; fi
 
 # postrun
 after_success:

DESCRIPTION

@@ -1,6 +1,6 @@
 Package: AMR
 Version: 0.2.0
-Date: 2018-04-18
+Date: 2018-04-19
 Title: Antimicrobial Resistance Analysis
 Authors@R: c(
     person(
@@ -25,7 +25,7 @@ Description: Functions to simplify the analysis of Antimicrobial Resistance (AMR
     on antibiograms according to Leclercq (2013)
     <doi:10.1111/j.1469-0691.2011.03703.x>.
 Depends:
-    R (>= 3.1.0)
+    R (>= 3.1.3)
 Imports:
     dplyr (>= 0.7.0),
     data.table (>= 1.10.0),

NEWS.md

@@ -9,7 +9,7 @@
 * New print format for tibbles and data.tables
 
 #### Changed
-* Support for older R versions, only R 3.1.0 and later is needed
+* Support for older R versions, only R 3.1.3 or later is needed
 * Renamed dataset `ablist` to `antibiotics`
 * Renamed dataset `bactlist` to `microorganisms`
 * Added more microorganisms to `bactlist`

R/freq.R

@@ -161,7 +161,7 @@ freq <- function(x,
   }
 
   if (mult.columns > 1) {
-    NAs <- x[is.na(x) | x == trimws(AMR:::strrep('NA ', mult.columns))]
+    NAs <- x[is.na(x) | x == trimws(strrep2('NA ', mult.columns))]
   } else {
     NAs <- x[is.na(x)]
   }

R/misc.R

@@ -49,7 +49,7 @@
 percent <- function(x, round = 1, force_zero = FALSE, ...) {
   val <- base::round(x * 100, digits = round)
   if (force_zero & any(val == as.integer(val))) {
-    val[val == as.integer(val)] <- paste0(val[val == as.integer(val)], ".", base::strrep(0, round))
+    val[val == as.integer(val)] <- paste0(val[val == as.integer(val)], ".", strrep2(0, round))
   }
   base::paste0(val, "%")
 }
@@ -116,12 +116,13 @@ size_humanreadable <- function(bytes, decimals = 1) {
 # Support for older R versions --------------------------------------------
 
 # strrep is only available in R 3.3 and later
-strrep <- function(x, times) {
+strrep2 <- function(x, times) {
   for (i in 1:length(x)) {
     x[i] <- paste(rep(x[i], times[i]), collapse = "")
   }
   x
 }
+
 # trimws is only available in R 3.2 and later
 trimws <- function(x, which = "both") {
   if (which %in% c("left", "both", "l", "b")) {

R/print.R

@@ -190,7 +190,7 @@ prettyprint_df <- function(x,
   # extra space of 3 chars, right to row name or number
   if (NROW(x) > 0) {
     maxrowchars <- rownames(x) %>% nchar() %>% max() + 3
-    rownames(x) <- paste0(rownames(x), strrep(" ", maxrowchars - nchar(rownames(x))))
+    rownames(x) <- paste0(rownames(x), strrep2(" ", maxrowchars - nchar(rownames(x))))
   } else {
     maxrowchars <- 0
   }
@@ -203,7 +203,7 @@ prettyprint_df <- function(x,
     x <- x %>% filter(row_number() %in% rows_list)
     rownames(x) <- rownames(x.bak)[rows_list]
     # set inbetweener between parts
-    rownames(x)[n / 2 + 1] <- strrep("~", maxrowchars)
+    rownames(x)[n / 2 + 1] <- strrep2("~", maxrowchars)
   }
 
   if (header == TRUE) {
@@ -259,7 +259,7 @@ prettyprint_df <- function(x,
     # replace NAs
     if (nchar(na) < 2) {
       # make as long as the text "NA"
-      na <- paste0(na, strrep(" ", 2 - nchar(na)))
+      na <- paste0(na, strrep2(" ", 2 - nchar(na)))
     }
     try(x[, i] <- gsub("^NA$", na, trimws(x[, i], 'both')), silent = TRUE)
     # place class into 1st row
@@ -269,7 +269,7 @@ prettyprint_df <- function(x,
     # dashes between two parts when exceeding nmax
     maxvalchars <- max(colnames(x)[i] %>% nchar(), x[, i] %>% nchar() %>% max())
     if (n + 1 < nrow(x.bak)) {
-      x[n / 2 + if_else(header == TRUE, 2, 1), i] <- strrep("~", maxvalchars)
+      x[n / 2 + if_else(header == TRUE, 2, 1), i] <- strrep2("~", maxvalchars)
     }
 
     # align according to `right` parameter, but only factors and text, but not MICs
@@ -278,11 +278,11 @@ prettyprint_df <- function(x,
       vals <- x %>% pull(i) %>% trimws('both')
       colname <- colnames(x)[i] %>% trimws('both')
       if (right == FALSE) {
-        vals <- paste0(vals, strrep(" ", maxvalchars - nchar(vals)))
-        colname <- paste0(colname, strrep(" ", maxvalchars - nchar(colname)))
+        vals <- paste0(vals, strrep2(" ", maxvalchars - nchar(vals)))
+        colname <- paste0(colname, strrep2(" ", maxvalchars - nchar(colname)))
       } else {
-        vals <- paste0(strrep(" ", maxvalchars - nchar(vals)), vals)
-        colname <- paste0(strrep(" ", maxvalchars - nchar(colname)), colname)
+        vals <- paste0(strrep2(" ", maxvalchars - nchar(vals)), vals)
+        colname <- paste0(strrep2(" ", maxvalchars - nchar(colname)), colname)
       }
       x[, i] <- vals
       colnames(x)[i] <- colname
@@ -291,25 +291,25 @@ prettyprint_df <- function(x,
     # add left padding according to `width` parameter
     # but not in 1st col when row names are off
     if (row.names == TRUE | i > 1) {
-      x[, i] <- paste0(strrep(" ", width), x[, i])
-      colnames(x)[i] <- paste0(strrep(" ", width), colnames(x)[i])
+      x[, i] <- paste0(strrep2(" ", width), x[, i])
+      colnames(x)[i] <- paste0(strrep2(" ", width), colnames(x)[i])
     }
 
     # strip columns that do not fit (3 chars as margin)
     width_console <- options()$width
     width_until_col <- x %>%
       select(1:i) %>%
-      apply(1, paste, collapse = strrep(" ", width + 1)) %>%
+      apply(1, paste, collapse = strrep2(" ", width + 1)) %>%
       nchar() %>%
       max()
     width_until_col_before <- x %>%
       select(1:(max(i, 2) - 1)) %>%
-      apply(1, paste, collapse = strrep(" ", width + 1)) %>%
+      apply(1, paste, collapse = strrep2(" ", width + 1)) %>%
       nchar() %>%
       max()
     extraspace <- maxrowchars + nchar(rownames(x)[length(rownames(x))])
-    width_until_colnames <- colnames(x)[1:i] %>% paste0(collapse = strrep(" ", width + 1)) %>% nchar() + extraspace
-    width_until_colnames_before <- colnames(x)[1:(max(i, 2) - 1)] %>% paste0(collapse = strrep(" ", width + 1)) %>% nchar() + extraspace
+    width_until_colnames <- colnames(x)[1:i] %>% paste0(collapse = strrep2(" ", width + 1)) %>% nchar() + extraspace
+    width_until_colnames_before <- colnames(x)[1:(max(i, 2) - 1)] %>% paste0(collapse = strrep2(" ", width + 1)) %>% nchar() + extraspace
 
     if (i > 1 &
         (width_until_col > width_console

tests/testthat/test-misc.R

@@ -19,8 +19,8 @@ test_that("size format works", {
 })
 
 test_that("functions missing in older R versions work", {
-  expect_equal(strrep("A", 5), "AAAAA")
-  expect_equal(strrep(c("A", "B"), c(5, 2)), c("AAAAA", "BB"))
+  expect_equal(strrep2("A", 5), "AAAAA")
+  expect_equal(strrep2(c("A", "B"), c(5, 2)), c("AAAAA", "BB"))
   expect_equal(trimws(" test "), "test")
   expect_equal(trimws(" test ", "l"), "test ")
   expect_equal(trimws(" test ", "r"), " test")