Add script to compute number of library pkgs per day per author

kgryte · kgryte · commit 9d17143ac6a3 · 2016-12-14T19:13:17.000-08:00
diff --git a/tools/git/scripts/author_lib_pkgs_per_day b/tools/git/scripts/author_lib_pkgs_per_day
@@ -0,0 +1,47 @@
+#!/usr/bin/env bash
+#
+# Prints the (approximate) number of library packages per day per author.
+#
+# <month> <day> <year> <author_first_name> <author_last_name> <num_pkgs>
+
+# Determine root directory:
+root="$(git rev-parse --show-toplevel)"
+
+# Define the path to a utility to find when `package.json` files were added and deleted:
+pkg_json="${root}/tools/git/scripts/pkg_json_added_deleted"
+
+# * `pkg_json`
+#   - `package.json` additions and deletions.
+# * `awk '{}'`
+#   - Tabulate the daily totals.
+# * `sort -k1n -k2M`
+#   - Sort the year numerically and sort the second key as a month.
+# * `awk '{}'`
+#   - Format the output.
+"${pkg_json}" | awk '
+{
+	day = $5 OFS $2 OFS $3
+}
+
+# Skip non-library `package.json`:
+$9 !~ /lib\/node_modules\/\@stdlib\// {
+	next
+}
+
+# Added a `package.json`:
+$8 == "A" {
+	pkgs[day,$6,$7] += 1
+}
+
+# Deleted a `package.json`:
+$8 == "D" {
+	pkgs[day,$6,$7] -= 1
+}
+
+END {
+	for (k in pkgs) {
+		split(k, keys, SUBSEP)
+		print keys[1] OFS keys[2] OFS keys[3] OFS pkgs[k]
+	}
+}
+' | sort -k1n -k2M | awk '{print $2 OFS $3 OFS $1 OFS $4 OFS $5 OFS $6}'
