Merge pull request #31 from ropensci-review-tools/libyears

libyears for #23

DESCRIPTION

@@ -1,6 +1,6 @@
 Package: repometrics
 Title: Metrics for Your Code Repository
-Version: 0.1.1.065
+Version: 0.1.1.068
 Authors@R: 
     person("Mark", "Padgham", , "mark.padgham@email.com", role = c("aut", "cre"),
            comment = c(ORCID = "0000-0003-2172-5265"))

R/cm-data-dependencies.R

@@ -23,3 +23,21 @@ cm_data_dependencies <- function (path) {
 
     data.frame (do.call (rbind, deps))
 }
+
+cm_data_libyears <- function (path) {
+
+    deps <- cm_data_dependencies (path)
+    cran_db <- data.frame (tools::CRAN_package_db ())
+    index <- match (deps$name, cran_db$Package)
+    deps$cran_version <- cran_db$Version [index]
+    deps$published <- as.Date (cran_db$Published [index])
+    deps <- deps [which (!is.na (deps$published)), ]
+
+    rel <- releases_from_gh_api (path, latest_only = TRUE)
+    rel_date <- as.Date (strftime (rel$published_at, format = "%Y-%m-%d"))
+
+    dt <- difftime (deps$published, rel_date, units = "days")
+    dt <- as.numeric (dt) / 365.25 # In years
+
+    c (mean = mean (dt), median = stats::median (dt))
+}

R/cm-data-gh-releases.R

@@ -1,4 +1,11 @@
-releases_from_gh_api <- function (path, n_per_page = 100L) {
+releases_from_gh_api <- function (path, n_per_page = 100L, latest_only = FALSE) {
+
+    checkmate::assert_integerish (n_per_page)
+    checkmate::assert_logical (latest_only)
+
+    if (latest_only) {
+        n_per_page <- 1L
+    }
 
     is_test_env <- Sys.getenv ("REPOMETRICS_TESTS") == "true"
 
@@ -19,7 +26,7 @@ releases_from_gh_api <- function (path, n_per_page = 100L) {
         body <- c (body, httr2::resp_body_json (resp))
 
         next_page <- gh_next_page (resp)
-        if (is_test_env) {
+        if (is_test_env || latest_only) {
             next_page <- NULL
         }
 

codemeta.json

@@ -8,7 +8,7 @@
   "codeRepository": "https://github.com/ropensci-review-tools/repometrics",
   "issueTracker": "https://github.com/ropensci-review-tools/repometrics/issues",
   "license": "https://spdx.org/licenses/GPL-3.0",
-  "version": "0.1.1.065",
+  "version": "0.1.1.068",
   "programmingLanguage": {
     "@type": "ComputerLanguage",
     "name": "R",

tests/testthat/test-cm-data-git.R

@@ -42,3 +42,20 @@ test_that ("cm data dependencies", {
         expect_type (deps [[n]], "character")
     }
 })
+
+skip_on_cran ()
+
+test_that ("cm data libyears", {
+
+    path <- generate_test_pkg ()
+    libyears <- with_mock_dir ("gh_libyears", {
+        cm_data_libyears (path)
+    })
+    fs::dir_delete (path)
+
+    expect_type (libyears, "double")
+    expect_length (libyears, 2L)
+    expect_named (libyears)
+    expect_equal (names (libyears), c ("mean", "median"))
+    expect_true (all (libyears > 0))
+})