Initial commit

latest-tags.py

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+#!/usr/bin/env python
+#
+# Script for retrieving the git tags in truly chronological order.
+#
+# 2021 (c) Marcel Kapfer <opensource@mmk2410.org>
+# Licensed under the MIT/Expat License
+#
+# NOTES:
+#
+# - This is a draft! It may burn your house, delete your harddrive
+#   and/or kill your kitten.
+#
+# ISSUES:
+#
+# - There are some repos who maintain different major versions over
+#   some time in specific branches and that the release not on
+#   master/main/whatever but on these version branches. This may
+#   result in issues when using the sorting of tags retrieved by this
+#   script somewhere else.
+
+import subprocess
+
+
+def main():
+    # TODO: Add user defined keywords to the list.
+    ignored_keywords = ["pre", "rc", "beta", "alpha", "dev"]
+    # TODO: Add a ability for the user to customize this.
+    default_branch = "master"
+
+    # Retrieve all tags in the repo (that are fetched...)
+    tags = subprocess.run(["git", "tag"], stdout=subprocess.PIPE)
+    allowedTags = {}
+    for tag in tags.stdout.decode('utf-8').splitlines():
+        # Sort out tags that contain any `ignored_keywords`
+        if len([ignored_keyword for ignored_keyword in ignored_keywords if ignored_keyword in tag]) != 0:
+            continue
+        # Retriev the date in ISO-8061 format from git
+        date = subprocess.run(["git", "log", "-1", "--format='%aI'", tag], stdout=subprocess.PIPE)
+        # Strip away the encloding quotes as well as some whitespace
+        allowedTags[tag] = date.stdout.decode('utf-8').strip(" \n'")
+    # Sort by keys, which are the retrieved timestampes
+    allowedTags = sorted(allowedTags.items(), key=lambda item: item[1])
+
+    # Printing out
+    for k,v in allowedTags:
+        print(k)
+    print("Latest tag: {}\nSecond latest tag: {}".format(allowedTags[-1][0],allowedTags[-2][0]))
+
+
+if __name__ == "__main__":
+    main()