support qmd file format, and treat it internally as R markdown

NEWS.md

@@ -1,3 +1,9 @@
+# styler 1.7.0.9000 (Development version)
+
+* `filetype` `.qmd` is now supported, but not turned on by default (#931).
+
+
+
 # styler 1.7.0
 
 **API changes**

R/set-assert-args.R

@@ -71,10 +71,11 @@ set_and_assert_arg_filetype <- function(filetype) {
 #' @importFrom rlang abort
 #' @keywords internal
 assert_filetype <- function(lowercase_filetype) {
-  if (!all(lowercase_filetype %in% c("r", "rmd", "rmarkdown", "rnw", "rprofile"))) {
+  allowed_types <- c("r", "rmd", "rmarkdown", "rnw", "rprofile", "qmd")
+  if (!all(lowercase_filetype %in% allowed_types)) {
     abort(paste(
       "filetype must not contain other values than 'R', 'Rprofile',",
-      "'Rmd', 'Rmarkdown' or 'Rnw' (case is ignored)."
+      "'Rmd', 'Rmarkdown', 'qmd' or 'Rnw' (case is ignored)."
     ))
   }
 }

R/transform-code.R

@@ -11,7 +11,7 @@
 transform_code <- function(path, fun, ..., dry) {
   if (is_plain_r_file(path) || is_rprofile_file(path)) {
     transform_utf8(path, fun = fun, ..., dry = dry)
-  } else if (is_rmd_file(path)) {
+  } else if (is_rmd_file(path) || is_qmd_file(path)) {
     transform_utf8(path,
       fun = partial(transform_mixed, transformer_fun = fun, filetype = "Rmd"),
       ..., dry = dry

R/ui-styling.R

@@ -7,7 +7,8 @@ NULL
 #'
 #' Performs various substitutions in all `.R` files in a package
 #' (code and tests). One can also (optionally) style `.Rmd`, `.Rmarkdown` and/or
-#' `.Rnw` files (vignettes and readme) by changing the `filetype` argument.
+#' `.qmd`, `.Rnw` files (vignettes and readme) by changing the `filetype`
+#' argument.
 #' Carefully examine the results after running this function!
 #'
 #' @param pkg Path to a (subdirectory of an) R package.
@@ -161,6 +162,17 @@ prettify_pkg <- function(transformers,
       )
     )
   }
+
+  if ("\\.qmd" %in% filetype_) {
+    vignette_files <- append(
+      vignette_files,
+      dir_without_.(
+        path = ".",
+        pattern = "\\.qmd$"
+      )
+    )
+  }
+
   files <- setdiff(
     c(r_files, rprofile_files, vignette_files, readme),
     exclude_files
@@ -214,7 +226,8 @@ style_text <- function(text,
 
 #' Prettify arbitrary R code
 #'
-#' Performs various substitutions in all `.R`, `.Rmd`, `.Rmarkdown` and/or `.Rnw` files
+#' Performs various substitutions in all `.R`, `.Rmd`, `.Rmarkdown`, `qmd`
+#' and/or `.Rnw` files
 #' in a directory (by default only `.R` files are styled - see `filetype` argument).
 #' Carefully examine the results after running this function!
 #' @param path Path to a directory with files to transform.
@@ -263,8 +276,8 @@ style_dir <- function(path = ".",
 #'
 #' This is a helper function for style_dir.
 #' @inheritParams style_pkg
-#' @param recursive A logical value indicating whether or not files in subdirectories
-#'   should be styled as well.
+#' @param recursive A logical value indicating whether or not files in
+#'   subdirectories should be styled as well.
 #' @keywords internal
 prettify_any <- function(transformers,
                          filetype,
@@ -298,7 +311,7 @@ prettify_any <- function(transformers,
   )
 }
 
-#' Style `.R`, `.Rmd`, `.Rmarkdown` or `.Rnw` files
+#' Style `.R`, `.Rmd`, `.Rmarkdown`, `.qmd` or `.Rnw` files
 #'
 #' Performs various substitutions in the files specified.
 #' Carefully examine the results after running this function!

R/utils-files.R

@@ -13,6 +13,11 @@ is_rnw_file <- function(path) {
   grepl("\\.Rnw$", path, ignore.case = TRUE)
 }
 
+is_qmd_file <- function(path) {
+  grepl("\\.qmd$", path, ignore.case = TRUE)
+}
+
+
 is_unsaved_file <- function(path) {
   path == ""
 }

tests/testthat/public-api/xyzfile_qmd/new.qmd

@@ -0,0 +1,19 @@
+---
+output:
+  github_document:
+    html_preview: true
+---
+
+<!-- README.md is generated from README.Rmd. Please edit that file -->
+
+Some text
+```{r}
+# Some R code
+f <- function(x) {
+  x
+}
+```
+Final text
+```{r}
+1 + 2
+```

tests/testthat/public-api/xyzpackage-qmd/DESCRIPTION

@@ -0,0 +1,15 @@
+Package: xyzpackage
+Title: What the Package Does (one line, title case)
+Version: 0.0.0.9000
+Authors@R: person("First", "Last", email = "[email protected]", role = c("aut", "cre"))
+Description: What the package does (one paragraph).
+Depends: R (>= 3.3.2)
+License: What license is it under?
+Encoding: UTF-8
+LazyData: true
+Suggests: testthat
+LinkingTo: 
+    Rcpp
+Imports: 
+    Rcpp
+RoxygenNote: 6.0.1.9000

tests/testthat/public-api/xyzpackage-qmd/NAMESPACE

@@ -0,0 +1 @@
+# Generated by roxygen2: do not edit by hand

tests/testthat/public-api/xyzpackage-qmd/R/RcppExports.R

@@ -0,0 +1,6 @@
+# Generated by using Rcpp::compileAttributes() -> do not edit by hand
+# Generator token: 10BE3573-1514-4C36-9D1C-5A225CD40393
+
+timesTwo <- function(x) {
+  .Call("_xyzpackage_timesTwo", PACKAGE = "xyzpackage", x)
+}

tests/testthat/public-api/xyzpackage-qmd/R/hello-world.R

@@ -0,0 +1,3 @@
+hello_world <- function() {
+  print("hello, world")
+}

tests/testthat/public-api/xyzpackage-qmd/README.Rmd

@@ -0,0 +1,33 @@
+---
+output: github_document
+---
+
+<!-- README.md is generated from README.Rmd. Please edit that file -->
+
+```{r setup, include = FALSE}
+knitr::opts_chunk$set(
+  collapse = TRUE,
+  comment = "#>",
+  fig.path = "man/figures/README-"
+)
+```
+# styler
+
+The goal of styler is to ...
+
+## Installation
+
+You can install styler from github with:
+
+```{r gh-installation, eval = FALSE}
+# install.packages("devtools")
+devtools::install_github("jonmcalder/styler")
+```
+
+## Example
+
+This is a basic example which shows you how to solve a common problem:
+
+```{r example}
+## basic example code
+```

tests/testthat/public-api/xyzpackage-qmd/new.qmd

@@ -0,0 +1,19 @@
+---
+output:
+  github_document:
+    html_preview: true
+---
+
+<!-- README.md is generated from README.Rmd. Please edit that file -->
+
+Some text
+```{r}
+# Some R code
+f <- function(x) {
+  x
+}
+```
+Final text
+```{r}
+1 + 2
+```

tests/testthat/public-api/xyzpackage-qmd/src/.gitignore

@@ -0,0 +1,3 @@
+*.dll
+*.o
+*.so

tests/testthat/public-api/xyzpackage-qmd/src/RcppExports.cpp

@@ -0,0 +1,28 @@
+// Generated by using Rcpp::compileAttributes() -> do not edit by hand
+// Generator token: 10BE3573-1514-4C36-9D1C-5A225CD40393
+
+#include <Rcpp.h>
+
+using namespace Rcpp;
+
+// timesTwo
+NumericVector timesTwo(NumericVector x);
+RcppExport SEXP _xyzpackage_timesTwo(SEXP xSEXP) {
+BEGIN_RCPP
+    Rcpp::RObject rcpp_result_gen;
+    Rcpp::RNGScope rcpp_rngScope_gen;
+    Rcpp::traits::input_parameter< NumericVector >::type x(xSEXP);
+    rcpp_result_gen = Rcpp::wrap(timesTwo(x));
+    return rcpp_result_gen;
+END_RCPP
+}
+
+static const R_CallMethodDef CallEntries[] = {
+    {"_xyzpackage_timesTwo", (DL_FUNC) &_xyzpackage_timesTwo, 1},
+    {NULL, NULL, 0}
+};
+
+RcppExport void R_init_xyzpackage(DllInfo *dll) {
+    R_registerRoutines(dll, NULL, CallEntries, NULL, NULL);
+    R_useDynamicSymbols(dll, FALSE);
+}

tests/testthat/public-api/xyzpackage-qmd/src/timesTwo.cpp

@@ -0,0 +1,27 @@
+#include <Rcpp.h>
+using namespace Rcpp;
+
+// This is a simple example of exporting a C++ function to R. You can
+// source this function into an R session using the Rcpp::sourceCpp
+// function (or via the Source button on the editor toolbar). Learn
+// more about Rcpp at:
+//
+//   http://www.rcpp.org/
+//   http://adv-r.had.co.nz/Rcpp.html
+//   http://gallery.rcpp.org/
+//
+
+// [[Rcpp::export]]
+NumericVector timesTwo(NumericVector x) {
+  return x * 2;
+}
+
+
+// You can include R code blocks in C++ files processed with sourceCpp
+// (useful for testing and development). The R code will be automatically
+// run after the compilation.
+//
+
+/*** R
+timesTwo(42)
+*/

tests/testthat/public-api/xyzpackage-qmd/tests/testthat.R

@@ -0,0 +1,4 @@
+library(testthat)
+library(xyzpackage)
+
+test_check("xyzpackage")

tests/testthat/public-api/xyzpackage-qmd/tests/testthat/test-package-xyz.R

@@ -0,0 +1,5 @@
+context("testing styler on package")
+
+test_that("hi there", {
+  I(am(a(package(x))))
+})

tests/testthat/public-api/xyzpackage-qmd/vignettes/random.Rmarkdown

@@ -0,0 +1,58 @@
+---
+title: "Vignette Title"
+author: "Vignette Author"
+date: "`r Sys.Date()`"
+output: rmarkdown::html_vignette
+vignette: >
+  %\VignetteIndexEntry{Vignette Title}
+  %\VignetteEngine{knitr::rmarkdown}
+  %\VignetteEncoding{UTF-8}
+---
+
+Vignettes are long form documentation commonly included in packages. Because they are part of the distribution of the package, they need to be as compact as possible. The `html_vignette` output type provides a custom style sheet (and tweaks some options) to ensure that the resulting html is as small as possible. The `html_vignette` format:
+
+- Never uses retina figures
+- Has a smaller default figure size
+- Uses a custom CSS stylesheet instead of the default Twitter Bootstrap style
+
+## Vignette Info
+
+Note the various macros within the `vignette` section of the metadata block above. These are required in order to instruct R how to build the vignette. Note that you should change the `title` field and the `\VignetteIndexEntry` to match the title of your vignette.
+
+## Styles
+
+The `html_vignette` template includes a basic CSS theme. To override this theme you can specify your own CSS in the document metadata as follows:
+
+    output: 
+      rmarkdown::html_vignette:
+        css: mystyles.css
+
+## Figures
+
+The figure sizes have been customised so that you can easily put two images side-by-side. 
+
+```{r, fig.show='hold'}
+plot(1:10)
+plot(10:1)
+```
+
+You can enable figure captions by `fig_caption: yes` in YAML:
+
+    output:
+      rmarkdown::html_vignette:
+        fig_caption: yes
+
+Then you can use the chunk option `fig.cap = "Your figure caption."` in **knitr**.
+
+## More Examples
+
+You can write math expressions, e.g. $Y = X\beta + \epsilon$, footnotes^[A footnote here.], and tables, e.g. using `knitr::kable()`.
+
+```{r, echo=FALSE, results='asis'}
+knitr::kable(head(mtcars, 10))
+```
+
+Also a quote using `>`:
+
+> "He who gives up [code] safety for [code] speed deserves neither."
+([via](https://twitter.com/hadleywickham/status/504368538874703872))