[tools][clang-tidy] add skip file

tools/codestyle/clang-tidy.py

@@ -93,6 +93,53 @@ def make_absolute(f, directory):
     return os.path.normpath(os.path.join(directory, f))
 
 
+def analysis_gitignore(path, filename=".gitignore"):
+    """Analysis gitignore file and return ignore file list"""
+    with open(path + "/" + filename, "r") as f:
+        lines = f.readlines()
+        ignore_file_list = []
+        for line in lines:
+            # Blank row
+            if line == "\n" or line == "\r\n":
+                continue
+
+            # explanatory note
+            line = line.replace("\n", "").strip()
+            if "#" in line:
+                if not line.startswith("#"):
+                    ignore_file_list.append(
+                        line[: line.index("#")].replace(" ", "")
+                    )
+                continue
+
+            # TODO(gouzil): support more gitignore rules
+            if "*" in line:
+                continue
+
+            ignore_file_list.append(line.replace(" ", ""))
+
+    return ignore_file_list
+
+
+def skip_check_file(database, build_path):
+    """Skip checking some files"""
+    skip_file_list = []
+    skip_file_list.append(".cu")
+    skip_file_list.append(os.path.join(os.getcwd(), build_path))
+    skip_file_list += analysis_gitignore(os.getcwd())
+    res_list = []
+    for entry in database:
+        write_in = True
+        for ignore_file in skip_file_list:
+            if ignore_file in entry["file"]:
+                write_in = False
+                break
+        if write_in:
+            res_list.append(entry)
+
+    return res_list
+
+
 def get_tidy_invocation(
     f,
     clang_tidy_binary,
@@ -348,6 +395,7 @@ def main():
 
     # Load the database and extract all files.
     database = json.load(open(os.path.join(build_path, db_path)))
+    database = skip_check_file(database, build_path)
     files = [
         make_absolute(entry['file'], entry['directory']) for entry in database
     ]