Introduced basic validation of the clang-format version

This is a very primitive implementation, which could probably be improved. We should also raise an error if clang-format is not found

1 files changed, 18 insertions, 1 deletions

diff --git a/scripts/formatcode.py b/scripts/formatcode.py
index dc13ae117..49a8753da 100644
--- a/scripts/formatcode.py
+++ b/scripts/formatcode.py
@@ -1,8 +1,9 @@
 import argparse
-import os
 import fileinput
+import os
 import pathlib
 import re
+import subprocess
 
 match_expressions = []
 valid_extensions = []
@@ -89,6 +90,20 @@ def parse_match_expressions(wildcards, matches):
             print(f'Could not parse input --match expression \'{regex}\': {str(ex)}')
             quit()
 
+def validate_clang_format():
+    vstring = subprocess.check_output("clang-format --version", shell=True).decode().rstrip()
+
+    match = re.search(r'(\d+)\.(\d+)(\.(\d+))?$', vstring)
+    if not match:
+        raise ValueError("invalid version number '%s'" % vstring)
+
+    (major, minor, patch) = match.group(1, 2, 4)
+
+    if int(major) < 13:
+        if int(minor) == 0:
+            if int(patch) < 1:
+                raise ValueError(f'invalid clang-format version -- we require at least v12.0.1')
+
 def _main():
     global root_dir, use_batching
 
@@ -106,6 +121,8 @@ def _main():
     root_dir = pathlib.Path(__file__).parent.parent.resolve()
     use_batching = options.use_batching
 
+    validate_clang_format()
+
     while True:
         if (os.path.isfile(".clang-format")):
             scan_zen(".")