Ignore if no changed files found on PR (#14)

Author: andreiavrammsd

.github/workflows/test.yml

@@ -1,5 +1,5 @@
 # https://gist.github.com/NickNaso/0d478f1481686d5bcc868cac06620a60
-name: build
+name: test
 
 on:
   push:

README.md

@@ -1,7 +1,7 @@
 # ZIP
 
-[![build](https://github.com/andreiavrammsd/cpp-zip/workflows/build/badge.svg)](https://github.com/andreiavrammsd/cpp-zip/actions/workflows/test.yml)
-  [![build](https://github.com/andreiavrammsd/cpp-zip/workflows/release/badge.svg)](https://github.com/andreiavrammsd/cpp-zip/actions/workflows/release.yml)
+[![test](https://github.com/andreiavrammsd/cpp-zip/workflows/test/badge.svg)](https://github.com/andreiavrammsd/cpp-zip/actions/workflows/test.yml)
+  [![release](https://github.com/andreiavrammsd/cpp-zip/workflows/release/badge.svg)](https://github.com/andreiavrammsd/cpp-zip/actions/workflows/release.yml)
   [![codecov](https://codecov.io/github/andreiavrammsd/cpp-zip/graph/badge.svg?token=TBV8ID8QK0)](https://codecov.io/github/andreiavrammsd/cpp-zip)
   [![documentation](https://img.shields.io/badge/msd::zip-Documentation-4EC820?labelColor=5E5E5E)](https://andreiavrammsd.github.io/cpp-zip/)
 

tools/qa

@@ -28,18 +28,23 @@ def code_quality(src, default_branch, event, workspace, build_path, build_type):
 
     # Find files
     if event == "pull_request":
-        diff_command = f"git diff --name-only origin/{default_branch}...HEAD {src} | grep '\{files_pattern}$'"
+        diff_command = f"git diff --name-only origin/{default_branch}...HEAD {src} | grep '\{files_pattern}$' || true"
     else:
-        diff_command = f"git ls-files --directory {src} | grep '\{files_pattern}$'"
+        diff_command = f"git ls-files --directory {src} | grep '\{files_pattern}$' || true"
 
-    files = subprocess.run(
+    result = subprocess.run(
         diff_command, shell=True, capture_output=True, text=True
     ).stdout.strip()
-    files = [f for f in files.split("\n")]
+    
+    files = [f for f in result.split("\n")] if result != "" else []
+
+    if event == "push":
+        if len(files) == 0:
+            raise ValueError(f"No files matching pattern \"{files_pattern}\" found on push event. Impossible!")
 
     # Run tools
-    if files:
-        file_count = len(files)
+    file_count = len(files)
+    if file_count > 0:
         print(f"Format {file_count} file(s)")
         subprocess.run(["clang-format", "-i"] + files, check=True)