Refactor RStudio helpers

And flag encoding as UTF-8. Fixes #82

R/reprex-addin.R

@@ -99,13 +99,11 @@ reprex_addin <- function() { # nocov start
 
 reprex_guess <- function(source, venue = "gh", source_file = NULL,
                          si = FALSE, show = FALSE) {
-  context <- rstudioapi::getSourceEditorContext()
-
   reprex_input <- switch(
     source,
     clipboard = NULL,
-    cur_sel = newlined(rstudioapi::primary_selection(context)[["text"]]),
-    cur_file = newlined(context$contents),
+    cur_sel = rstudio_selection(),
+    cur_file = rstudio_file(),
     input_file = source_file$datapath
   )
 
@@ -125,14 +123,37 @@ reprex_selection <- function(
                             si = getOption("reprex.si", FALSE),
                             show = getOption("reprex.show", TRUE)
 ) {
-  context <- rstudioapi::getSourceEditorContext()
-  selection <- newlined(rstudioapi::primary_selection(context)[["text"]])
-
   reprex(
-    input = selection,
+    input = rstudio_selection(),
     venue = venue,
     si = si,
     show = show
   )
 }
+
+# RStudio helpers ---------------------------------------------------------
+
+rstudio_file <- function(context = rstudio_context()) {
+  rstudio_text_tidy(context$contents)
+}
+
+rstudio_selection <- function(context = rstudio_context()) {
+  text <- rstudioapi::primary_selection(context)[["text"]]
+  rstudio_text_tidy(text)
+}
+
+rstudio_context <- function() {
+  rstudioapi::getSourceEditorContext()
+}
+
+rstudio_text_tidy <- function(x) {
+  Encoding(x) <- "UTF-8"
+
+  n <- length(x)
+  if (!grepl("\n$", x[[n]])) {
+    x[[n]] <- paste0(x[[n]], "\n")
+  }
+  x
+}
+
 # nocov end

R/utils.R

@@ -86,13 +86,6 @@ add_ext <- function(x, ext = "R", force = FALSE) {
   }
 }
 
-newlined <- function(x) {
-  if (!grepl("\n$", x[[length(x)]])) {
-    x[[length(x)]] <- paste0(x[[length(x)]], "\n")
-  }
-  x
-}
-
 ## read from
 ##   1 clipboard
 ##   2 `input`, which could be