Tools/scripts: add pypi-get-latest-version.sh

pypi-get-latest-version.sh retrieves the latest version of any
Python package as registered on https://pypi.org

It makes it easy to check the latest version from the command line.

1 files changed, 45 insertions, 0 deletions

diff --git a/Tools/scripts/pypi-get-latest-version.sh b/Tools/scripts/pypi-get-latest-version.sh
new file mode 100755
index 000000000000..2b7c71e56401
--- /dev/null
+++ b/Tools/scripts/pypi-get-latest-version.sh
@@ -0,0 +1,45 @@
+#!/bin/sh
+#
+# MAINTAINER: yuri@FreeBSD.org
+
+set -e
+set -o pipefail
+
+export LC_ALL=C
+
+##
+## pypi-get-latest-version.sh: retrieves the latest version of a given Python package as registered on https://pypi.org
+##
+
+# args
+
+PACKAGE_NAME="$1"
+
+if [ -z "$PACKAGE_NAME" ]; then
+	echo "Usage: $0 <package-name>"
+	exit 1
+fi
+
+# check that packaged dependencies are installed
+
+for dep in jq version_sort; do
+	if ! which -s $dep; then
+		echo "error: the '$dep' dependency is missing"
+		if [ $dep == "jq" ]; then
+			echo "... please install the 'jq' package"
+		elif [ $dep == "version_sort" ]; then
+			echo "... please install the 'libversion' package"
+		fi
+		exit 1
+	fi
+done
+
+
+# MAIN
+
+fetch -o - https://pypi.python.org/pypi/$PACKAGE_NAME/json 2>/dev/null |
+	jq -r '.releases | keys[]' |
+	grep -v dev |
+	version_sort |
+	tail -1 ||
+	echo "failed to find the Python package '$PACKAGE_NAME'"