1 files changed, 22 insertions, 0 deletions
diff --git a/git_describe.py b/git_describe.py
new file mode 100644
index 0000000..d33cc0b
--- /dev/null
+++ b/git_describe.py
@@ -0,0 +1,22 @@
+import subprocess
+
+from pelican import signals
+
+
+def git_describe():
+    """Check and return git describe --tags value."""
+    return subprocess \
+        .run(["git", "describe", "--tags"],
+             stdout=subprocess.PIPE, check=True) \
+        .stdout.decode('utf-8').strip()
+
+
+def expand_context(generators):
+    desc = git_describe()
+    for gen in generators:
+        gen.context['git_describe'] = desc
+
+
+def register():
+    """Register Pelican signals to dedicated functions."""
+    signals.all_generators_finalized.connect(expand_context)