Merge pull request #526 from wch/print-sessioninfo

Add session_info function

NAMESPACE

@@ -77,6 +77,7 @@ export(revdep)
 export(revdep_check)
 export(revdep_maintainers)
 export(run_examples)
+export(session_info)
 export(set_path)
 export(show_news)
 export(source_gist)

R/session-info.r

@@ -26,3 +26,51 @@ dev_packages <- function() {
 
   names(packages)[packages]
 }
+
+#' Print session information
+#'
+#' This function prints out the same information as
+#' \code{\link[utils]{sessionInfo}()}, with one difference: it also prints out
+#' the GithubSHA1 value of loaded packages, if present.
+#'
+#' @export
+session_info <- function() {
+
+  # This is a modified version of utils:::print.sessionInfo from R 3.1.1. It's
+  # exactly the same except that it also prints out a package's GithubSHA1
+  # value, if present.
+  print_session_info <- function (x, locale = TRUE, ...) {
+      mkLabel <- function(L, n) {
+          vers <- sapply(L[[n]], function(x) {
+              str <- x[["Version"]]
+              if (!is.null(x$GithubSHA1)) {
+                str <- paste0(str, "(", substr(x$GithubSHA1, 1, 7), ")")
+              }
+              str
+          })
+          pkg <- sapply(L[[n]], function(x) x[["Package"]])
+          paste(pkg, vers, sep = "_")
+      }
+      cat(x$R.version$version.string, "\n", sep = "")
+      cat("Platform: ", x$platform, "\n\n", sep = "")
+      if (locale) {
+          cat("locale:\n")
+          print(strsplit(x$locale, ";", fixed = TRUE)[[1]], quote = FALSE,
+              ...)
+          cat("\n")
+      }
+      cat("attached base packages:\n")
+      print(x$basePkgs, quote = FALSE, ...)
+      if (!is.null(x$otherPkgs)) {
+          cat("\nother attached packages:\n")
+          print(mkLabel(x, "otherPkgs"), quote = FALSE, ...)
+      }
+      if (!is.null(x$loadedOnly)) {
+          cat("\nloaded via a namespace (and not attached):\n")
+          print(mkLabel(x, "loadedOnly"), quote = FALSE, ...)
+      }
+      invisible(x)
+  }
+
+  print_session_info(sessionInfo())
+}

man/session_info.Rd

@@ -0,0 +1,13 @@
+% Generated by roxygen2 (4.0.1): do not edit by hand
+\name{session_info}
+\alias{session_info}
+\title{Print session information}
+\usage{
+session_info()
+}
+\description{
+This function prints out the same information as
+\code{\link[utils]{sessionInfo}()}, with one difference: it also prints out
+the GithubSHA1 value of loaded packages, if present.
+}
+