added as_pkgrefs DESCRIPTION (#113)

R/as_pkgrefs.R

@@ -41,6 +41,9 @@ as_pkgrefs.character <- function(x, bioc_version = NULL, ...) {
     if(.is_directory(x)) {
       return(.extract_pkgrefs_dir(x,bioc_version))
     }
+    if(.is_DESCRIPTION(x)){
+        return(.extract_pkgrefs_DESCRIPTION(x))
+    }
     return(.normalize_pkgs(pkgs = x, bioc_version = bioc_version))
 }
 
@@ -88,6 +91,23 @@ as_pkgrefs.sessionInfo <- function(x, ...) {
     return(paste0("cran::", handle))
 }
 
+.extract_pkgrefs_DESCRIPTION <- function(path){
+    descr <- read.dcf(path)
+    types <- colnames(descr)
+    refs <- c()
+    if("Imports"%in%types){
+        imports <- descr[,"Imports"]
+        imports <- strsplit(imports,",[\n]*")[[1]]
+        refs <- c(refs,paste0("cran::",gsub("\\(.*\\)","",imports)))
+    }
+    if("Remotes"%in%types){
+        remotes <- descr[,"Remotes"]
+        remotes <- strsplit(remotes,",[\n]*")[[1]]
+        refs <- c(refs,paste0("github::",gsub("\\(.*\\)","",remotes)))
+    }
+    trimws(refs,"both")
+}
+
 .is_renv_lockfile <- function(path) {
     # assuming all renv lockfiles are called renv.lock and path is only length 1
     if(length(path)!=1) {
@@ -123,3 +143,18 @@ as_pkgrefs.sessionInfo <- function(x, ...) {
     warning("scanning directories for R packages cannot detect github packages.",call. = FALSE)
     return(.normalize_pkgs(pkgs = pkgs, bioc_version = bioc_version))
 }
+
+.is_DESCRIPTION <- function(path) {
+    # assuming all DESCRIPTION files are called DESCRIPTION and path is only length 1
+    if(length(path)!=1) {
+        return(FALSE)
+    }
+    if(isFALSE(file.exists(path))) {
+        return(FALSE)
+    }
+    if (isFALSE(basename(path) == "DESCRIPTION")) {
+        return(FALSE)
+    }
+    TRUE
+}
+

tests/testdata/DESCRIPTION

@@ -0,0 +1,23 @@
+Package: mzesalike
+Title: Xaringan Template With MZES Theme
+Version: 0.0.3
+Authors@R: 
+    person(given = "Chung-hong",
+           family = "Chan",
+           role = c("aut", "cre"),
+           email = "[email protected]",
+           comment = c(ORCID = "0000-0002-6232-7530"))
+Description: Create professional looking HTML5 slides with MZES theme.
+License: GPL-3
+Encoding: UTF-8
+LazyData: true
+Imports:
+    xaringan,
+    xaringanExtra (>= 0.0.14),
+    leaflet,
+    fontawesome
+Remotes:
+    yihui/xaringan,
+    chainsawriot/xaringanExtra,
+    rstudio/fontawesome
+RoxygenNote: 7.1.0

tests/testthat/test_pkgref.R

@@ -139,6 +139,16 @@ test_that("as_pkgrefs directory", {
     expect_equal(res, c("bioc::BiocGenerics", "cran::rtoot"))
 })
 
+## as_pkgrefs.character (DESCRIPTION)
+test_that("as_pkgrefs DESCRIPTION", {
+    res <- suppressWarnings(as_pkgrefs("../testdata/DESCRIPTION",bioc_version = "3.16"))
+    expect_equal(res, c("cran::xaringan", "cran::xaringanExtra", "cran::leaflet", "cran::fontawesome", 
+                        "github::yihui/xaringan", "github::chainsawriot/xaringanExtra", 
+                        "github::rstudio/fontawesome"))
+})
+
+
+
 ## .is_*
 
 test_that(".is_pkgref", {